References
Baraff, L.J., Lee, T.J., Kader, S. and Della Penna, R. (1999), Effect of a practice
guideline on the process of emergency department care of falls in elder patients.
Academic Emergency Medicine, 6 (12), 1216-1223.
Abstract: Objective: To determine the effect of a practice guideline on the process of ED
care in a health maintenance organization. Methods: A pre- post-intervention
comparison with a one-year pre-intervention phase followed by a one-year
post-educational intervention phase was used to study the effect of the guideline
on ED care. Emergency physicians and nurses were provided the details of the
guideline during a two-week interval between the two periods. Results: During
the two years of the study, 1,140 preintervention and 759 post-intervention
patients met study eligibility criteria. More patients were diagnosed as having
had falls due to loss of consciousness, stroke, and seizures during the
post-intervention period (pre- intervention 3.8% vs post-intervention 8.4%, p 46%. Whole blood viscosity, at low and high
shear rates, plasma viscosity, and fibrinogen were measured on days 0 and 60. In
the ticlopidine group, we recorded a significant 13.14% reduction of the mean
fibrinogen level after treatment (390 +/- 63 vs. 449 +/- 97 mg/dl, p 25
% of all measurements were 140 - 179 mm Hg systolic or 90 - 109 mm Hg
diastolic; and as severe AH if > 25 % of all measurements were > 180 mm Hg
systolic or > 110 mm Hg diastolic. Bleeding complications were registered.
Results: Of the 235 patients (108 female, 67 +/- 12 years), 80 % suffered from
AH. Severe AH was present in 5 %. Only 56 % were aware of suffering from
AH. An improvement of antihypertensive therapy was needed in 64 %. Over 225
days, only one cerebral bleeding occurred. Blood pressure was normotensive in
30 % with known AH. Conclusions: Blood pressure control seems better in OAC
patients than in normals, if the patient is aware of AH. Patients with AH on OAC
are not aware of AH in > 50 %. Repeated blood pressure measurements in OAC
are recommended, even if patients are not aware of AH
Keywords: anticoagulation/antihypertensive therapy/ANTITHROMBOTIC
THERAPY/arterial/arterial hypertension/Austria/AWARENESS/bleeding/blood
pressure/blood pressure control/cerebral/cerebral bleeding/CHRONIC
ATRIAL-FIBRILLATION/COMPLICATIONS/control/HYPERTENSION/oral
anticoagulation/PREVALENCE/PREVENTION/risk/STROKE/therapy/UNIVE
RSITY HOSPITALS/WARFARIN USE
Schick, U., Zimmermann, M. and Stolke, D. (1996), Long-term evaluation of EG-IC
bypass patency. Acta Neurochirurgica, 138 (8), 938-942.
Abstract: The EC-IC Bypass Study Group could not detect any benefit from surgery
compared to medical management in the prevention of strokes in 1985 [15].
During the past years surgical revascularization was re-evaluated and considered
as an appropriate treatment for a small subgroup of patients with recurrent focal
cerebral ischaemia and impaired haemodynamics. This retrospective study
examines the long-term benefit and patency rats of bypass. We present a
follow-up of 5.6 years of 47 patients, all of whom underwent bypass surgery
after 1985. Forty patients suffered recurring transient ischaemic attacks due to
uni- or bilateral internal carotid artery occlusion. Examination included
neurologic status, TCD with CO2 or Diamox challenge, angiography, CT and
SPECT scans. Neurological improvement was seen in 23% of patients with
better results after early surgery, a worsening in 22% suffering further ischaemic
events on a postoperative average of 2.8 years. Patency rate for vein graft
material was 50%, for the STA-MCA procedure 91%. Occlusion of the vein graft
occurred on an average after 1.4 years, other anastomosis after 2.7 years. We
conclude that only few patients derived long-term benefit from EC-IC bypasses.
Functioning of the bypass worsens over time, suggesting a role for surgery
predominantly in the first year of ischaemic events due to insufficient collateral
supply. Actual indications for bypass surgery may be patients with failure of
maximal medical therapy and progressive ischaemia and haemodynamic
compromise
Keywords: ACETAZOLAMIDE/bypass function/bypass grafting/CEREBRAL
BLOOD-FLOW/cerebrovascular reserve capacity/CEREBROVASCULAR
RESERVE CAPACITY/CT/DISEASE/EC-IC bypass/focal/INTERNAL
CAROTID-ARTERY/ischaemia/ISCHEMIA/OCCLUSION/prevention/rats/RE
ACTIVITY/STROKE/SURGERY/treatment
Lowenthal, A. (1988), European Stroke Prevention Study. Acta Neurologica Belgica,
88 (1), 14-18
Lowenthal, A. and Buyse, M. (1994), Secondary Prevention of Stroke - Does
Dipyridamole Add to Aspirin. Acta Neurologica Belgica, 94 (1), 24-34.
Abstract: Background and Purpose : The purpose of this paper is to evaluate, in the light
of all available evidence, the place of aspirin alone and of aspirin combined with
dipyridamole in the secondary prevention of cerebrovascular accidents. Methods :
We performed a meta-analysis of all identified double blind, controlled, studies
in secondary prevention of cerebrovascular accidents for the following
categories : studies comparing aspirin with placebo ; studies comparing aspirin
plus dipyridamole with placebo ; studies comparing aspirin plus dipyridamole
with aspirin alone. An indirect comparison was carried out to compare the results
obtained with aspirin alone and those obtained with aspirin combined with
dipyridamole. Results : The meta-analysis of trials involving aspirin alone
against placebo showed a risk reduction on strokes (17% reduction, p = 0.02),
''important vascular events'', i.e. a combination of vascular deaths, non-fatal
strokes and non-fatal myocardial infarction (18% reduction, p = 0.003). Fatal
vascular events (vascular deaths and fatal strokes) did not seem to be reduced at
all. The overall mortality was reduced by 10%, but this reduction failed to reach
statistical significance (p = 0.23). The meta-analysis of trials involving aspirin
combined with dipyridamole showed more important risk reductions on every
outcome whether fatal or not. Strokes were reduced by 42% (p 65 years or patients with stroke. The overall risk reduction was best in
TIA patients > 65 years of age. The risk reduction with study medication was
40-50% in both sexes and in both age groups. Thus, age of the patient does not
influence the efficacy of antithrombotic therapy. However, since these results are
obtained from a secondary analysis of a subgroup of patients, the results may
need confirmation by further studies
Keywords: ASPIRIN/CEREBRAL-ISCHEMIA/CONTROLLED TRIAL/TRANSIENT
ISCHEMIC ATTACKS
Farina, E., Magni, E., Ambrosini, F., Manfredini, R., Binda, A., Sina, C. and Mariani, C.
(1997), Neuropsychological deficits in asymptomatic atrial fibrillation. Acta
Neurologica Scandinavica, 96 (5), 310-316.
Abstract: Objective - To assess the preclinical effects on cognitive functions of
nonrheumatic atrial fibrillation (NRAF) in patients with negative history for
cerebrovascular disease. Materials and methods - The study included 37
consecutive patients with chronic (n=16, mean age 65.3+/-6.6 years) or
paroxysmal (n=21, mean age 58.3+/-9.5 years) NRAF and an equal number of
control subjects in sinus rhythm, who were matched for age, education and
presence of hypertension, A comprehensive neuropsychological battery
including tests of attention, memory, language and visuospatial skills was
administered. Results - Patients with chronic NRAF showed significantly poorer
performances in tasks exploring attention and verbal memory functions, while
the paroxysmal group was significantly impaired in a long-term memory task,
The neuropsychological findings were confirmed excluding from both groups
patients viith CT evidence of cerebrovascular damage. A small subgroup of
patients was also submitted to cerebral MRI. Conclusion - Neurologically
asymptomatic NRAF is related to a subclinical but significant impairment in
attention and memory. These deficits could be produced by minor ischemic
lesions due to microembolization, or by diffuse hypoxic damage due to
hypoperfusion
Keywords: age/asymptomatic/atrial fibrillation/cerebral/CEREBRAL
BLOOD-FLOW/cerebrovascular/cerebrovascular disease/cognitive
impairment/COMPLICATIONS/control/COPENHAGEN/CT/DISEASE/educati
on/EPIDEMIOLOGIC
FEATURES/fibrillation/history/HYPERTENSION/INFARCTION/ischemic/MR
I/neuropsychological tests/PREVENTION/RISK/STROKE/VASCULAR
DEMENTIA
Sivenius, J., Cunha, L., Diener, H.C., Forbes, C., Laakso, M., Lowenthal, A., Smets, P.
and Riekkinen, P. (1999), Second European Stroke Prevention Study: antiplatelet
therapy is effective regardless of age. Acta Neurologica Scandinavica, 99 (1),
54-60.
Abstract: Background - The Second European Stroke Prevention Study (ESPS2) was a
randomized, placebo-controlled trial that investigated the efficacy of low-dose
acetylsalicylic acid (ASA) and modified-release dipyridamole (DP), alone or in
combination, in the secondary prevention of ischemic stroke. The trial
demonstrated that the combination was significantly more effective than either
agent used alone. The aim of the present study was to evaluate the influence of
age on the efficacy of ASA and DP, alone or in combination, in the secondary
prevention of stroke in the ESPS2 population. Methods and results - A total of
6602 patients were recruited to the ESPS2 and there were 4 treatment groups:
ASA (25 mg twice daily), DP (200 mg twice daily), ASA and DP in a combined
formulation, or placebo. Primary endpoints were stroke, death, and stroke or
death together. The endpoints evaluated in the present study were stroke, stroke
and/or death, and vascular events. Stroke was the qualifying event in 76% of the
patients, while 24% had a transient ischaemic attack. Patients were reviewed at
3-month intervals for 2 years. The study population consisted of 2565 (39%)
patients aged less than 65 years, 2240 (34%) patients aged between 65 and 74
years, and 1797 (27%) patients aged 75 years and over, Advancing age was
associated with an increased incidence of endpoints in all 4 treatment groups.
The combination of ASA and DP significantly reduced the incidence of all
endpoints, compared with placebo, in each age group. There was no influence of
age on the efficacy of antiplatelet therapy for any of the evaluated endpoints.
Relative risk reductions of treatment compared with placebo were 11.1-27.6% in
the ASA group, 8.0-18.7% in the DP group, and 20.3-45.2% in patients receiving
combination therapy. Conclusion - This study clearly demonstrates that
combination therapy with DP and ASA is superior to either agent used alone in
the secondary prevention of ischemic stroke, irrespective of the age of the patient
Keywords: acetylsalicylic acid/age/aged/antiplatelet/antiplatelet therapy/cerebrovascular
disease/COPENHAGEN/DENMARK/dipyridamole/Finland/incidence/ischemic/
ischemic stroke/population/prevention/randomized/risk/secondary
prevention/stroke/therapy/transient/treatment/vascular
Arboix, A., Morcillo, C., Garcia-Eroles, L., Oliveres, M., Massons, J. and Targa, C.
(2000), Different vascular risk factor profiles in ischemic stroke subtypes: a
study from the "Sagrat Cor Hospital of Barcelona Stroke Registry". Acta
Neurologica Scandinavica, 102 (4), 264-270.
Abstract: To characterize the vascular risk factor profiles in different subtypes of
ischemic stroke. Material and methods - The study population consisted of 1473
consecutive ischemic stroke patients collected in a prospective stroke registry.
The prevalence of vascular risk factors in each stroke subtype was analyzed
independently and in comparison with other subtypes of stroke pooled together
by means of univariate analysis and logistic regression models. Results
Hypertension was present in 52% of patients followed by atrial fibrillation in
27% and diabetes in 20"/o. The pattern of risk factors associated with
atherothrombotic stroke included chronic obstructive pulmonary disease (COPD)
(odds ratio [OR] = 2.63), hypertension (OR = 2.55), diabetes (OR = 2.26),
transient ischemic attack (OR = 1.61), and age (OR = 1.03). Previous cerebral
hemorrhage (OR =4.72), hypertension (OR =4.29), obesity (OR = 2.45), and
diabetes (OR = 1.73) were strong predictors of lacunar stroke. In the case of
cardioembolic stroke, atrial fibrillation (OR =22.24), valvular heart disease (OR
= 10.97), and female gender (OR = 1.66) occurred more frequently among
patients with this stroke subtype than among the other stroke subtypes combined.
Conclusion - Different potentially modifiable vascular risk factor profiles were
identified for each subtype of ischemic stroke, particularly COPD in the case of
atherothrombotic stroke and previous cerebral hemorrhage and hypertension in
the case of lacunar infarction
Keywords: age/ASSOCIATION/atrial fibrillation/BODY-FAT/cardioembolic
stroke/cerebral/cerebral hemorrhage/CEREBRAL INFARCTION/cerebral
infarction/CEREBROVASCULAR-DISEASE/cigarette
smoking/CIGARETTE-SMOKING/CONSECUTIVE
PATIENTS/COPENHAGEN/DENMARK/diabetes/diabetes
mellitus/fibrillation/heart/heart
disease/hemorrhage/hypertension/infarction/ischemic/ischemic stroke/lacunar
infarction/LACUNAR INFARCTS/lacunar
stroke/lifestyle/MORTALITY/obesity/POPULATION/predictors/prevalence/PR
EVENTION/risk/risk factor/risk factors/Spain/stroke/transient/transient ischemic
attack/vascular/vascular risk factors
Szolnoki, Z., Somogyvari, F., Kondacs, A., Szabo, M. and Fodor, L. (2001), Evaluation
of the roles of common genetic mutations in leukoaraiosis. Acta Neurologica
Scandinavica, 104 (5), 281-287.
Abstract: Objectives - Leukoaraiosis, a relatively frequent neuroimaging entity, is
presumed to be primarily a vascular problem. However, it can be explained only
in part by vascular risk factors. With the assumption of genetic susceptibility, the
roles of common genetic polymorphisms and mutations in leukoaraiosis were
examined in this study. Material and methods - A detailed clinical scrutiny of
843 Hungarian neurological patients with mild cognitive-like complaints
revealed 229 subjects with leukoaraiosis that was probably vascular in origin:
143 with leukoaraiosis alone (group 1), and 86 with leukoaraiosis plus cerebral
infarction (group 2). In all 229 patients, the methylenetetrahydrofolate reductase
C677T (MTHFR C677T) mutation and angiotensin-converting enzyme (ACE
I/D) polymorphism were examined by means of the PCR technique. The
prevalences of the different genotypes for the examined mutations in the 2
groups were analysed in comparison with the data on 362 neuroimaging
alteration-free subjects as controls. Results - The ACE D/D genotype (38.37%, P
70. The method of data collection in this
pretest proved to be apt for a multicenter study presently being conducted in 23
Neurology departments with an acute stroke unit
Keywords: acute/acute stroke/acute stroke
unit/COMMUNITY/complications/CONSECUTIVE
PATIENTS/COPENHAGEN- STROKE/data
collection/DATA-BANK/Germany/hemorrhage/hospital/hospitals/intracerebral/i
ntracerebral hemorrhage/ischemia/ischemic/ISCHEMIC STROKE/length of
stay/NEW-YORK/NORTH-CAROLINA/outcome/POPULATION/prevention/P
ROGRAMS/REGISTRY/risk/risk factors/secondary
prevention/severity/stroke/stroke treatment/stroke unit/stroke
units/therapy/transient/treatment/vascular
Diener, H.C. (2001), New publications on stroke. Aktuelle Neurologie, 28 (8), 353-358.
Abstract: This review summarizes the most important publications concerning stroke
from the second half of 1999 until the second half of 2000. The most important
studies were performed in the areas of primary prevention and acute therapy
Keywords: acute/ACUTE ISCHEMIC
STROKE/ALCOHOL-CONSUMPTION/ASPIRIN/CAROTID
ENDARTERECTOMY/CHOLESTEROL/CORONARY
HEART-DISEASE/DOUBLE-BLIND/Germany/PLASMINOGEN-ACTIVATO
R/PREVENTION/primary/primary prevention/RANDOMIZED CONTROLLED
TRIAL/review/stroke/therapy
Endres, M. and Masuhr, F. (2002), Is cholesterol a risk factor for stroke? Aktuelle
Neurologie, 29 (5), 247-253.
Abstract: Surprisingly, the question whether or not cholesterol is a stroke risk factor has
remained controversial and somewhat counterintuitive. In contrast to coronary
heart disease, large trials failed to demonstrate a correlation between elevated
serum cholesterol levels and stroke incidence. There is even evidence for an
inverse relation between cholesterol levels and risk of intracerebral hemorrhage.
Moreover, clinical trials in the pre-statin era failed to demonstrate an effect of
cholesterol-lowering on stroke incidence. On the other hand, in the 1990s large
randomized trials demonstrated unequivocally that HMG-CoA reductase
inhibitors (statins) lower stroke risk in patients with coronary heart disease
(CHD). Hence, lipid- lowering therapy with statins is established for stroke
prophylaxis in patients with CHD. The question, however, whether these
protective effects are cholesterol-dependent or rather mediated by cholesterol -
independent (,,pleiotropic") effects, and whether statins may be beneficial for
secondary prevention of stroke in patients without CHD, remains controversial
Keywords: CARDIOVASCULAR EVENTS/CAROTID
ARTERIES/CHD/cholesterol/cholesterol-lowering/clinical
trials/CONTROLLED TRIALS/coronary heart disease/CORONARY
HEART-DISEASE/DIETARY-FAT/disease/Germany/heart/heart
disease/hemorrhage/HMG-CoA reductase
inhibitors/incidence/intracerebral/intracerebral hemorrhage/JAPANESE
MEN/lipid
lowering/MYOCARDIAL-INFARCTION/prevention/prophylaxis/randomized/ra
ndomized trials/RECURRENT EVENTS CARE/REDUCTASE
INHIBITORS/risk/risk factor/secondary/secondary
prevention/serum/SERUM-CHOLESTEROL/statins/stroke/stroke
incidence/therapy/trials
Bosel, J. and Endres, M. (2002), The use of statins in clinical neurology. Aktuelle
Neurologie, 29 (5), 254-261.
Abstract: HMG-CoA reductase inhibitors (statins) are potent cholesterol- lowering drugs
and are established for the treatment of hypercholesterolemia. Furthermore, large
clinical trials (4S, CARE, LIPID) demonstrated that statins are indicated for
secondary prophylaxis of coronary heart disease (CHD) even in patients with
average cholesterol levels. Although hypercholesterolemia is not an established
risk factor for ischemic stroke, these studies demonstrated that statins also reduce
stroke incidence in patients with CHD. The question whether or not statins are
generally indicated for secondary prevention of stroke is subject of two ongoing
trials (i.e. PROSPER, SPARCL). Clinical as well as experimental evidence
supports the notion that statins exert cholesterol-independent
(so-called,pleiotropic") protective effects. These include anti-inflammatory and
anti-thrombotic effects, improvement of endothelial function and even direct
neuroprotective effects. Furthermore, experimental and preliminary clinical
studies suggest a potential role of statins for the treatment of dementia.
Regarding the use of statins in clinical neurology, current evidence only supports
the use for stroke prophylaxis in patients with a history of CHD
Keywords: 4S/ACUTE CORONARY
SYNDROMES/ALZHEIMERS-DISEASE/antithrombotic/C-REACTIVE
PROTEIN/CARE/CHD/cholesterol/CHOLESTEROL REDUCTION/clinical
studies/clinical trials/COA REDUCTASE INHIBITORS/coronary heart
disease/dementia/disease/drugs/endothelial
function/experimental/Germany/heart/heart disease/history/HMG-CoA reductase
inhibitors/HONOLULU-HEART- PROGRAM/HUMAN
GLIOMA-CELLS/hypercholesterolemia/incidence/INCREASES SERUM
CONCENTRATIONS/ischemic/ischemic
stroke/LIPID/neurology/NITRIC-OXIDE
SYNTHASE/prevention/prophylaxis/risk/risk factor/secondary/secondary
prevention/SMOOTH-MUSCLE/statins/stroke/stroke
incidence/treatment/trials/use
Klatsky, A.L. (1999), Moderate drinking and reduced risk of heart disease. Alcohol
Research & Health, 23 (1), 15-23.
Abstract: Although heavier drinkers are at increased risk for some heart diseases,
moderate drinkers are at lower risk for the most common form of heart disease,
coronary artery disease (CAD) than are either heavier drinkers or abstainers. This
association has been demonstrated in large-scale epidemiological studies from
many countries. Abstainers may share traits potentially related to CAD risk, such
as psychological characteristics, dietary habits, and physical exercise patterns.
However, evidence supports a direct protective effect of alcohol, even after data
have been adjusted for the presence of these factors. The alcohol-CAD
relationship is also independent of the hypothetically increased risk status among
abstainers who stopped drinking for medical reasons. All alcoholic beverages
prefect against CAD, although some additional protection may be attributable to
personal traits or drinking patterns among people who share some beverage
preferences or to nonalcohol ingredients in specific beverages. Alcohol's
protective effect may result from favorable alterations in blood chemistry and the
prevention of clot formation in arteries that deliver blood to the heart muscle.
Because CAD accounts for a large proportion of fetal mortality, the risk of death
from all causes is slightly lower among moderate drinkers than among abstainers,
but heavier drinkers are at considerably higher total mortality risk
Keywords: ALCOHOL/alcoholic beverage/ALCOHOLIC BEVERAGE USE/alcoholic
cardiomyopathy/AOD use frequency/AODR (alcohol and other drug related)
disorder/AODR mortality/BEER/BLOOD- PRESSURE/cardiac
arrhythmia/CARDIOVASCULAR MORTALITY/CONSUMPTION/coronary
artery disease/coronary artery
disorder/diseases/DRINKERS/exercise/formation/HEALTH/heart/heavy AOD
use/HIGH-DENSITY-LIPOPROTEIN/HOSPITALIZATION/hypertensive
disorder/literature review/moderate AOD
use/mortality/muscle/MYOCARDIAL-INFARCTION/prevention/protective
factors/public health/RED WINE/risk/risk factors/stroke
Hillbom, M. (1998), Alcohol consumption and stroke: Benefits and risks.
Alcoholism-Clinical and Experimental Research, 22 (7), 352S-358S.
Abstract: The complex relationship between alcohol consumption and stroke includes
both benefits and risks. Regular light-to-moderate consumption of alcohol seems
to decrease the risk for ischemic stroke by reducing atherothrombotic events, but
the underlying mechanism is still unclear. Recent and current (but not previous)
heavy drinking increases the risk for both hemorrhagic and ischemic strokes.
Young and middle-aged men are stricken more often than women or elderly
persons, probably because they are more often current heavy drinkers. Alcoholic
cardiomyopathy is a cause of cardioembolic brain infarction. Cardiac
arrhythmias caused by regular heavy drinking or binge drinking can precipitate
thrombus formation and propagate already existing thrombi from the heart. The
maintenance of high blood pressure by heavy drinking may promote cerebral
arterial degeneration, but the effect of drinking habits on aneurysm formation is
not known. Acute increases in systolic blood pressure and/or alterations in
cerebral arterial tone could serve as mechanisms triggering hemorrhagic strokes
during alcoholic intoxication. We lack studies to show that prevention of heavy
drinking can efficiently influence the occurrence of strokes
Keywords: ALCOHOL/alcohol drinking/blood pressure/cerebral
hemorrhage/CEREBRAL INFARCTION/cerebral
infarction/CEREBROVASCULAR-DISEASE/CIGARETTE-
SMOKING/CORONARY HEART-DISEASE/drug
abuse/elderly/Finland/formation/heart/high blood pressure/ISCHEMIC
STROKE/LOW-DENSITY-LIPOPROTEIN/NORTHERN MANHATTAN
STROKE/PLATELET-AGGREGATION/prevention/risk/SPONTANEOUS
INTRACEREBRAL HEMORRHAGE/stroke/SUBARACHNOID
HEMORRHAGE/subarachnoid hemorrhage/thrombus/women
Dammann, H.G., Burkhardt, F. and Wolf, N. (1999), Enteric coating of aspirin
significantly decreases gastroduodenal mucosal lesions. Alimentary
Pharmacology & Therapeutics, 13 (8), 1109-1114.
Abstract: Background: Low-dose aspirin (acetylsalicylic acid, ASA) increases the risk of
developing peptic ulceration. Aim: To investigate the gastroduodenal mucosal
tolerability of enteric- coated ASA (EC-ASA) 100 mg/day compared to either
placebo (study 1) or plain ASA 100 mg/day (study 2) in healthy volunteers,
Methods: Study 1: Tn this double-blind study 18 volunteers received randomized
dosing with either EC-ASA 100 mg or placebo for 15 days. Study 2: 41
volunteers underwent randomized 7-day dosing of either EC-ASA 100 mg or
plain ASA 100 mg in this double-blind, parallel-group, comparison study. In
both studies acute gastroduodenal mucosal lesions were assessed endoscopically
before treatment, on the morning of day 1 after the first dose (only in study 2),
and on the morning after the last dose of the test medication, Results: Study 1 did
not reveal any significant differences between the lesion scores of EC-ASA and
placebo, In contrast, in study 2 significantly higher total gastroduodenal mucosal
lesion scores were observed on day 1 after the first dose and after 7 days of
dosing with plain ASA (mean sum of the lesion scores in the gastric fundus,
body, antrum and in the duodenal bulb: day 1: plain ASA 3.95 +/- 3.38 vs.
EC-ASA 1.43 +/- 1.91, P = 0.03; day 7: plain ASA 6.35 +/- 4.10 vs, EC-ASA
2.00 +/- 2.02, P = 0.0004). Tolerance of the test drugs was good, and no other
adverse events were observed, Conclusions: Enteric-coated aspirin 100 mg/day
causes significantly less gastroduodenal damage over 7 days than the same dose
of plain aspirin, when given to healthy subjects, There was little gastric injury
and no significant differences between EC-ASA and placebo in this respect
Keywords: acetylsalicylic acid/acute/adverse events/ANTI-INFLAMMATORY
DRUGS/aspirin/BLEEDING PEPTIC-ULCER/BUFFERED
ASPIRIN/COATED
ASPIRIN/drugs/ENGLAND/GASTRIC-ULCER/INJURY/ISCHEMIC
STROKE/LOW-DOSE ASPIRIN/NONSTEROIDAL ANTIINFLAMMATORY
DRUGS/PREVENTION/randomized/risk/treatment
Okamoto, K., Tanaka, M. and Kondo, S. (2002), Treatment of vascular dementia.
Alzheimer'S Disease: Vascular Etiology and Pathology, 977 507-512.
Abstract: We report positron emission tomography (PET) findings of our patients with
vascular dementia, asymptomatic cerebral infarction, and chronic cerebral
circulatory insufficiency. According to the PET studies, it was suggested that
frontal lobe hypoperfusion and hypometabolism play important roles in dementia
caused by cerebral infarctions. It was also suggested that patients with subjective
complaints associated with asymptomatic strokes and patients with chronic
cerebral circulatory insufficiency already exhibited decreased cerebral circulation.
Since therapeutic approaches to vascular dementia after its development are
limited, active control of risk factors and prevention of recurrent stroke during
the developmental process of vascular dementia are important. We review recent
situations in prevention and treatment of vascular dementia
Keywords: asymptomatic/cerebral/cerebral circulation/cerebral
infarction/chronic/control/dementia/development/DOUBLE-BLIND/infarction/J
apan/MULTI-INFARCT DEMENTIA/MULTICENTER/MULTIINFARCT
DEMENTIA/NEW-YORK/NICERGOLINE/patient/patients/PET/positron
emission tomography/positron emission tomography
(PET)/PREVENTION/recurrent stroke/review/risk/risk
factors/STROKE/stroke/THERAPY/treatment/TRIAL/USA/vascular/vascular
dementia
Meyer, J.S., Chowdhury, M.H., Xu, G.L., Li, Y.S. and Quach, M. (2002), Donepezil
treatment of vascular dementia. Alzheimer'S Disease: Vascular Etiology and
Pathology, 977 482-486.
Abstract: Cholinergic deficits are clinicopathological hallmarks of Alzheimer's disease
(DAT) and during the past decade have been the sole target for clinically
effective treatments. By contrast, vascular dementia subtypes (VaD) are
heterogeneous clinical syndromes, and therapeutic approaches have been
directed toward control of vascular risk factors. Little attention has been paid to
cholinergic deficits as a mechanism contributing to cognitive impairments in
VaD as a potential target for treatment. The purpose of the study was to
determine whether there are therapeutic benefits from long-term treatment with
cholinesterase inhibitors among VaD patients. Ten VaD patients were diagnosed
according to DSM-III-R and NINDS-AIREN criteria and classified into subtypes
by neuroimaging. All were treated with titrated doses of donepezil for a mean
interval of 15 months. At baseline and follow-up clinic visits, patients underwent
medical and neurological examinations, as well as neuropsychological testing
including Mini-Mental Status Examinations (MMSE) and Cognitive Capacity
Screening Examinations (CCSE). Cognitive statuses of 10 treated patients were
then compared before and after treatment. Net changes were expressed as annual
MMSE score changes (DeltaMMSE/year) and annual CCSE score changes
(DeltaCCSE/year). Of the 10 treated VaD patients, cognitive improvements were
found when comparisons were made before and after treatment. Ten treated
patients also showed greater cognitive improvements, while untreated patients
showed continued cognitive decline. This study suggests that cholinergic deficits
in VaD are due to neuronal ischemic damage with loss of acetylcholine and that
treatment of VaD with cholinesterase inhibitors is a rational therapy
Keywords: Alzheimer's disease/ALZHEIMERS-DISEASE/benefits/changes/cholinergic
deficits/cholinesterase inhibitors/CLINICAL DETERMINANTS/cognitive
decline/control/dementia/disease/donepezil/ischemic/medical/MMSE/NEW-YO
RK/NINDS-AIREN/patients/PREVENTION/risk/risk
factors/STROKE/therapy/treatment/USA/vascular/vascular dementia/vascular
dementia (VaD)/vascular risk/vascular risk factors
Wade, J.P.H. (1991), Multiinfarct Dementia - Prevention and Treatment. Alzheimer
Disease & Associated Disorders, 5 (2), 144-148.
Abstract: Multi-infarct dementia (MID) characteristically presents with an acute event
followed by a stepwise and fluctuating downhill course. Progression is generally
considered the consequence of recurrent stroke (Hachinski, 1983): the mainstay
of treatment, therefore, is the prevention of further ischemic events
Keywords:
ALZHEIMERS-DISEASE/DOUBLE-BLIND/MULTICENTER/NALOXONE/P
REPARATION HYDERGINE/RISK-
FACTORS/THERAPY/TRIAL/VASODILATORS
Kuller, L.H. (1996), Potential prevention of Alzheimer disease and dementia. Alzheimer
Disease & Associated Disorders, 10 13-16.
Abstract: The prevention of dementia is of critical importance. The increasing
population of high-risk older individuals will result in an increasing prevalence
of dementia. Primary prevention of dementia and Alzheimer disease can take
either a public health or high-risk preventive medicine approach. At the present
time, there is little evidence to support a specific primary public health approach
such as a specific nutrient. The possible association of vascular disease with
dementia may offer the best preventive high-risk approach. The identification of
individuals with clinical and subclinical vascular disease is possible. There is a
very high prevalence of subclinical cerebral infarction in older individuals.
Specific treatments can prevent clinical disease such as stroke and coronary heart
disease. Whether therapies will prevent some dementia can be determined
Keywords: ALLELE/ASSOCIATION/clinical trials/COGNITIVE
FUNCTION/coronary heart disease/dementia/EDUCATION/ELDERLY
PEOPLE/health/heart/PHENOTYPE/POPULATION/prevention/preventive
medicine/RISK/STROKE/vascular disease/WOMEN
Gorelick, P.B., Erkinjuntti, T., Hofman, A., Rocca, W.A., Skoog, I. and Winblad, B.
(1999), Prevention of vascular dementia. Alzheimer Disease & Associated
Disorders, 13 S131-S139.
Abstract: Stroke is an important public health problem worldwide. Those at high risk of
stroke may be at high risk of cognitive impairment and dementia after stroke.
Modifiable cardiovascular risk factors in midlife including hypertension, alcohol
use, cigarette smoking, and certain dietary factors may be important targets for
prevention of vascular causes of cognitive impairment. These same types of
factors may also be associated with Alzheimer disease. Better control of
cardiovascular disease risk factors might lead to delay or prevention of vascular
dementia and Alzheimer disease
Keywords: alcohol/Alzheimer
disease/ALZHEIMERS-DISEASE/APOLIPOPROTEIN-E
EPSILON-4/BASE-LINE FREQUENCY/BRAIN
INFARCTION/cardiovascular/cardiovascular disease/cardiovascular disease risk
factors/CARDIOVASCULAR HEALTH/cardiovascular risk/cardiovascular risk
factors/cigarette smoking/COGNITIVE FUNCTION/cognitive
impairment/control/dementia/disease/disease risk/health/high
risk/hypertension/MIDLIFE BLOOD-PRESSURE/prevention/public
health/risk/risk factors/RISK- FACTORS/smoking/stroke/STROKE
PREVENTION/use/vascular/vascular dementia/WHITE- MATTER LESIONS
Crisby, M., Carlson, L.A. and Winblad, B. (2002), Statins in the prevention and
treatment of Alzheimer disease. Alzheimer Disease & Associated Disorders, 16
(3), 131-136.
Abstract: Vascular risk factors such as hypertension and hypercholesterolemia during
midlife increase the risk for Alzheimer's disease (AD). Treatment of
hypercholesterolemia and other vascular risk factors may have great implications
in the prevention of AD. Recent findings illustrate that the sterol metabolism in
the brain is an active process, well controlled and regulated by 24-hydroxylase,
an enzyme that is uniquely expressed in the brain. The use of statins in ischemic
heart disease (IHD) has proven to be a phenomenal advance in pharmacological
disease prevention and treatment. A growing body of evidence, suggest that
statins exhibit additional benefits that are independent of their
cholesterol-lowering actions. Statin treatment has also considerable effect in
prevention of ischemic stroke. In animal models of ischemic stroke, statins have
proven to reduce infarct size through up- regulation of endothelial nitric oxide
synthases. Data from recent observational studies have revealed a potential role
for statins in prevention of AD. The following review comments the processes
leading to dementia including the involvement of cholesterol regulation, cerebral
circulation and inflammation in development of dementia. The mechanisms by
which statins may be beneficial in controlling these processes is discussed
Keywords: AD/Alzheimer disease/Alzheimer's disease/AMYLOID PRECURSOR
PROTEIN/animal/APOLIPOPROTEIN-E/BETA-PEPTIDE/brain/cerebral/chole
sterol/CHOLESTEROL/cholesterol-lowering/dementia/development/disease/hea
rt/heart
disease/HEART-DISEASE/HIPPOCAMPAL-NEURONS/hypercholesterolemia/
hypertension/inflammation/ischemic/ischemic heart disease/ischemic
stroke/mechanisms/metabolism/MOUSE MODEL/nitric oxide/NITRIC-OXIDE
SYNTHASE/observational studies/prevention/REDUCTASE
INHIBITORS/review/risk/risk factors/SENILE
PLAQUES/statins/stroke/Sweden/treatment/use/vascular/vascular risk/vascular
risk factors
Sheng, F.C.L. and Busuttil, R.W. (1986), Carotid Surgery in Stroke Prevention.
American Family Physician, 33 (4), 109-124
Keywords: FAMILY/PHYSICIANS
Quest, D.O. (1987), Carotid Endarterectomy for Stroke Prevention. American Family
Physician, 35 (5), 185-191
Keywords: FAMILY/PHYSICIANS
Unwin, D.H. and Greenlee, R.G. (1993), Prophylactic Drug-Therapy in
Cerebrovascular-Disease. American Family Physician, 48 (1), 85-90.
Abstract: Aspirin in doses of 325 mg to 1,300 mg per day is the drug of choice for
prophylactic therapy in cerebrovascular disease. Ticlopidine, a platelet antagonist,
is available for use in patients who cannot tolerate aspirin or who have not had
success with aspirin therapy. Although ticlopidine is more effective than aspirin
in preventing stroke, its use may be somewhat limited due to cost and the
uncommon but serious side effect of neutropenia. Low-dose warfarin remains the
drug of choice for the prevention of cardioembolic stroke. The role of warfarin in
ischemic cerebrovascular disease is unknown
Kerle, K.K. and Nishimura, K.D. (1996), Exertional collapse and sudden death
associated with sickle cell trait. American Family Physician, 54 (1), 237-240.
Abstract: Although rare, exertional collapse and sudden death are the most serious
potential complications of sickle cell trait. Studies suggest that this condition
may occur in susceptible persons when poor physical conditioning, dehydration,
heat stress or hypoxic states precipitate sickling of the abnormal erythrocytes.
Sickling leads to endothelial damage, which can cause vasoconstriction,
disseminated intravascular coagulation and local tissue damage. Cardiac effects
include acute ischemia and arrhythmias. Muscle damage results in acute
compartment syndromes and release of myoglobin into the circulation. Acute
renal failure is possible. Diagnosis is based on a high index of suspicion, and
characteristic presentation and laboratory findings, including myoglobinuria,
hyperkalemia, hypocalcemia, hyperphosphatemia and elevated creatine kinase
levels. The differential diagnosis includes pulmonary embolism, acute cardiac
events, anaphylaxis and heat stroke. Management is based on stabilization,
rehydration, and the treatment and prevention of complications
Keywords:
ACUTE-RENAL-FAILURE/coagulation/COMMUNITY/EXERCISE/FAMILY/
PHYSICIANS/prevention/RHABDOMYOLYSIS/RISK
FACTOR/stroke/treatment
Santilli, J.D., Santilli, S.M. and Rodnick, J.E. (1996), Prevention of stroke caused by
carotid bifurcation stenosis. American Family Physician, 53 (2), 549-556.
Abstract: Prevention of stroke caused by carotid bifurcation stenosis can be achieved by
accurate identification and evaluation of patients at risk. A consensus report from
the National Institute of Neurologic Disorders and Stroke has standardized
diagnostic criteria and symptoms related to this disease. Recent prospective,
randomized trials have identified effective treatment for both asymptomatic and
symptomatic carotid stenosis. The risk factors for carotid stenosis are similar to
those for atherosclerosis-hypertension, diabetes, cigarette smoking and
hyperlipidemia. A carotid bruit is the most common clinical finding, although its
positive predictive value is only about 60 to 70 percent. Recent clinical trials
have identified patient groups that benefit from surgical and medical therapy,
depending on the degree of carotid stenosis and the presence or absence of
symptoms. Symptomatic patients with carotid stenosis greater than 70 percent
benefit from surgical therapy. Asymptomatic patients who have carotid stenosis
greater than 60 percent and are good surgical candidates should be referred for
surgical consultation
Keywords: carotid/carotid stenosis/clinical
trials/consensus/evaluation/FAMILY/FRAMINGHAM/PHYSICIANS/randomiz
ed trials/risk/risk factors/smoking/stroke/treatment/trials
Reddy, M.P. and Reddy, V. (1997), Stroke rehabilitation. American Family Physician,
55 (5), 1742-1748.
Abstract: Stroke is the leading cause of brain damage and resultant disability.
Rehabilitation measures help to restore lost abilities, improve quality of life and
decrease the long-term economic cost of stroke. Proper patient selection, realistic
goal setting, the active participation of both the patient and family, and the use of
an interdisciplinary team approach are important for the success of stroke
rehabilitation. Functional demand and intensive training are believed to trigger
central nervous system reorganization, which is responsible for late functional
recovery after stroke. The outcome following a stroke is most likely to be
positive when patients have bladder and bowel continence, are able to feed
themselves and have a healthy and caring spouse. Stroke rehabilitation must
include the prevention or early diagnosis of medical complications as well as
patient and family education concerning the prevention of recurrent stroke
Keywords:
brain/COMPLICATIONS/cost/diagnosis/education/FAMILY/FOLLOW-UP/LE
NGTH/MORTALITY/PHYSICIAN/PHYSICIANS/PREDICTION/PREVENTI
ON/quality of life/rehabilitation/STAY/stroke/UNIT
Wolf, P.A. and Singer, D.E. (1997), Preventing stroke in atrial fibrillation. American
Family Physician, 56 (9), 2242-2250.
Abstract: Atrial fibrillation, a common cardiac arrhythmia, is now recognized as a
powerful risk factor for stroke. Previously, atrial fibrillation was thought to
predispose persons to stroke only in the presence of rheumatic heart disease with
mitral stenosis. The significant impact of nonvalvular atrial fibrillation on stroke
incidence, recurrence and mortality was not fully appreciated. A series of clinical
trials have confirmed that a five-fold increase in stroke incidence occurs in
patients with atrial fibrillation, and that warfarin anticoagulation is efficacious in
stroke prevention. This anticoagulation benefit was achieved with an acceptably
low risk of serious hemorrhage
Keywords: ANTICOAGULATION/ASPIRIN/atrial fibrillation/clinical
trials/COMPLICATIONS/EMBOLISM/FAMILY/fibrillation/FRAMINGHAM/h
eart/hemorrhage/incidence/mortality/PHYSICIANS/prevention/recurrence/risk/R
ISK-FACTORS/stroke/stroke prevention/trials/WARFARIN
Akhtar, W., Reeves, W.C. and Movahed, A. (1998), Indications for anticoagulation in
atrial fibrillation. American Family Physician, 58 (1), 130-136.
Abstract: Factors associated with an increased risk of thromboembolic events in patients
with atrial fibrillation (AF) include increasing age, rheumatic heart disease poor
left ventricular function, previous myocardial infarction, hypertension and a past
history of a thromboembolic event. Patients with AF should be considered for
anticoagulation or antiplatelet therapy based on the patient's age, the presence of
other risk factors for stroke and the risk of complications from anticoagulation.
In general, Patients with risk factors for stroke should receive warfarin
anticoagulation, regardless of their age. In patients who are tinder age 65 and
have no other risk factors for stroke, either aspirin therapy or no therapy at all is
recommended Aspirin or warfarin is recommended for use in patients between
65 and 75 years of age with no other risk factors, and warfarin is recommended
for use in patients without risk factors who are older than 75 years of age
Keywords: AF/age/anticoagulation/antiplatelet therapy/aspirin/atrial
fibrillation/complications/FAMILY/fibrillation/FOLLOW-UP/FRAMINGHAM/
heart/history/hypertension/MANAGEMENT/myocardial
infarction/PHYSICIANS/PREVENTION/RISK/risk
factors/stroke/therapy/thromboembolic events/WARFARIN
Ryan, M., Combs, G. and Penix, L.P. (1999), Preventing stroke in patients with transient
ischemic attacks. American Family Physician, 60 (8), 2329-2336.
Abstract: Stroke is the third most common overall cause of death and the leading cause
of adult disability in the United States, New therapeutic interventions instituted
in the period immediately after a stroke have revolutionized the approach to
ischemic cerebrovascular disease. Recognition of a transient ischemic attack
provides an opportunity to prevent a subsequent stroke, Specific stroke
prevention treatment depends on the cause of the transient ischemic attack, its
cerebrovascular localization and the presence of associated coexisting medical
problems, Modification of stroke risk factors is the principal therapeutic
approach, Antiplatelet agents and anticoagulants have been shown to be effective
in reducing the occurrence of stroke in certain populations, Several
well-designed studies have recently demonstrated the effectiveness of carotid
endarterectomy in preventing strokes related to extracranial carotid artery disease
Keywords:
AMERICAN-HEART-ASSOCIATION/anticoagulants/ASPIRIN/carotid/carotid
artery/CAROTID ENDARTERECTOMY/cerebrovascular/cerebrovascular
disease/CHOLESTEROL/DISEASE/endarterectomy/FAMILY/ischemic/META
ANALYSIS/PHYSICIAN/PHYSICIANS/PRACTICE
GUIDELINES/prevention/REDUCTASE INHIBITORS/RISK/risk
factors/stroke/stroke prevention/transient/transient ischemic attack/transient
ischemic attacks/treatment/TRIALS/United States
Hart, R.G. and Benavente, O. (1999), Stroke: Part I. A clinical update on prevention.
American Family Physician, 59 (9), 2475-2482.
Abstract: Clinical trials conducted during the past five years have yielded important
results that have allowed us to refine our approach to stroke prevention.
Treatment of isolated systolic hypertension prevents stroke and is generally well
tolerated. New antiplatelet agents (clopidogrel and the combination of aspirin
plus high-dose dipyridamole) have been shown to be effective in reducing
vascular events in survivors of ischemic stroke, although aspirin remains the
mainstay of antiplatelet therapy for stroke prevention. Several clinical trials
support the benefit of lipid-lowering agents ("statins") in reducing stroke.
Warfarin reduces stroke for high-risk patients with atrial fibrillation. Carotid
endarterectomy is highly beneficial in reducing stroke for symptomatic patients
with severe carotid stenosis (greater than 70 percent), but the benefit is less for
symptomatic patients with a moderate degree of stenosis (50 to 69 percent) and
for patients with asymptomatic carotid disease of any severity
Keywords: antiplatelet/antiplatelet agents/antiplatelet
therapy/aspirin/asymptomatic/atrial fibrillation/carotid/CAROTID
ENDARTERECTOMY/carotid stenosis/clinical
trials/clopidogrel/dipyridamole/endarterectomy/FAMILY/fibrillation/hypertensio
n/ischemic/ischemic stroke/isolated systolic
hypertension/METAANALYSIS/PHYSICIAN/PHYSICIANS/prevention/RISK/
severity/STENOSIS/stroke/stroke prevention/therapy/trials/vascular/Warfarin
Pearce, K.A., Boosalis, M.G. and Yeager, B. (2000), Update on vitamin supplements for
the prevention of coronary disease and stroke. American Family Physician, 62
(6), 1359-1366.
Abstract: Dietary antioxidants and folic acid may play a role in the pathophysiology of
coronary disease and stroke. We review patient-oriented evidence on the
effectiveness of supplementation with antioxidants and/or folic acid in the
prevention of myocardial infarction and stroke. Observational data suggest
cardiovascular benefit of vitamin E supplementation, but results of controlled
clinical trials are inconsistent regarding the effect on nonfatal myocardial
infarction. Moreover, studies have not shown a protective effect of vitamin E
against fatal myocardial infarction and have not addressed stroke. For vitamin C
and folic acid supplementation, observational data are inconsistent and controlled
clinical trials are lacking. Thus, the available evidence is insufficient to
recommend the routine use of vitamin E, vitamin C or folate supplements for the
prevention of myocardial infarction or stroke. The evidence argues against the
use of beta carotene supplements for this purpose. The costs and risks associated
with these supplements are low, however, and physicians may choose to
recommend vitamin E. folate and/or vitamin C supplementation pending
conclusive evidence from clinical trials
Keywords: antioxidants/beta carotene/BETA-CAROTENE/C
INTAKE/cardiovascular/CARDIOVASCULAR- DISEASE/clinical
trials/coronary disease/costs/DIETARY ANTIOXIDANT VITAMINS/E
CONSUMPTION/FAMILY/HEART-DISEASE/infarction/myocardial/myocardi
al
infarction/MYOCARDIAL-INFARCTION/PHYSICIAN/PHYSICIANS/POST
MENOPAUSAL WOMEN/prevention/review/RISK FACTOR/stroke/TOTAL
HOMOCYSTEINE/trials/vitamin C/vitamin E
Biller, J. and Thies, W.H. (2000), When to operate in carotid artery disease. American
Family Physician, 61 (2), 400-406.
Abstract: Carotid endarterectomy has proved to be beneficial in the prevention of stroke
in selected patients. The procedure is indicated in symptomatic patients with
carotid-territory transient ischemic attacks or minor strokes who have carotid
artery stenosis of 70 to 99 percent. With a low surgical risk, carotid
endarterectomy provides modest benefit in symptomatic patients with carotid
artery stenosis of 50 to 69 percent. Platelet antiaggregants and risk factor
modification are recommended in symptomatic patients with less than 50 percent
stenosis. In the Asymptomatic Carotid Atherosclerosis Study, carotid
endarterectomy was beneficial in patients who had asymptomatic carotid artery
stenosis of 60 percent or greater and whose general health made them good
candidates for elective surgery, provided that the arteriographic and surgical
complication rates were low. However, in asymptomatic patients, surgery
reduced the absolute risk of stroke by only 1 percent per year
Keywords: absolute risk/asymptomatic/BRUITS/carotid/carotid artery/carotid artery
disease/carotid artery stenosis/carotid
endarterectomy/CLINICAL-SIGNIFICANCE/CONSENSUS/disease/ENDART
ERECTOMY/FAMILY/health/ischemic/MODERATE/PHYSICIAN/PHYSICIA
NS/PLAQUE/PREVENTION/RISK/risk
factor/STENOSIS/STROKE/surgery/transient/transient ischemic attacks
Chatfield, J. (2001), American Heart Association scientific statement on the primary
prevention of ischemic stroke. American Family Physician, 64 (3), 513-514
Keywords: FAMILY/ischemic/ischemic
stroke/PHYSICIAN/PHYSICIANS/prevention/primary/primary
prevention/stroke
Bicket, D.P. (2002), Using ACE inhibitors appropriately. American Family Physician,
66 (3), 461-468.
Abstract: When first introduced in 1981, angiotensin-converting enzyme (ACE)
inhibitors were indicated only for treatment of refractory hypertension. Since
then, they have been shown to reduce morbidity or mortality in congesive heart
failure, myocardial infarction, diabetes mellitus, chronic renal insufficiency, and
atherosclerotic cardiovalcular disease. Pathologies underlying these conditions
are, in part attributable to the renin-angiotensin-aldosterone system.
Angiotension II contributes to endothelial dysfunction, altered renal
hemodynamics, and vascular and cardiac hypertrophy. ACE inhibitors attenuate
these effects. Clinical outcomes of AVE inhibiton include decreases in
myocardial infarction (fatal and nonfatal), reinfarction, angina, stroke, end-stage
renal disease, and morbidity and mortality associated with heart failure. ACE
inhibitors are generally well tolerated and few have few contraindications.
Copyright (C) 2002 American Academy of Family Physicians
Keywords: ACE inhibitors/ACUTE
MYOCARDIAL-INFARCTION/angina/ANTIHYPERTENSIVE
DRUGS/BENEFITS/CAPTOPRIL PREVENTION PROJECT/cardiac/cardiac
hypertrophy/chronic/CONVERTING ENZYME-INHIBITORS/diabetes/diabetes
mellitus/disease/end-stage renal disease/ENDOTHELIAL
DYSFUNCTION/FAMILY/heart/heart
failure/HEART-FAILURE/hemodynamics/hypertension/hypertrophy/infarction/
MORBIDITY/morbidity and mortality/MORTALITY/myocardial/myocardial
infarction/PHYSICIAN/PHYSICIANS/RANDOMIZED TRIAL/renal/renal
disease/stroke/treatment/vascular
King, D.E., Dickerson, L.M. and Sack, J.L. (2002), Acute management of atrial
fibrillation: Part II. Prevention of thromboembolic complications. American
Family Physician, 66 (2), 261-264.
Abstract: Family physicians should be familiar with the acute management of atrial
fibrillation and the initiation of chronic therapy for this common arrhythmia.
Initial management should include hemodynamic stabilization, rate control,
restoration of sinus rhythm, and initiation of antithrombotic therapy. Part 11 of
this two-part article focuses on the prevention of thromboembolic complications
using anticoagulation. Heparin is routinely administered before medical or
electrical cardioversion. Warfarin is used in patients with persistent atrial
fibrillation who are at higher risk for thromboembolic complications because of
advanced age, history of coronary artery disease or stroke, or presence of
left-sided heart failure. Aspirin is preferred in patients at low risk for
thromboembolic complications and patients with a high risk for falls, a history of
noncompliance, active bleeding, or poorly controlled hypertension. The
recommendations provided in this article are consistent with guidelines published
by the American Heart Association and the Agency for Healthcare Research and
Quality
Keywords: acute/age/anticoagulation/antithrombotic/ANTITHROMBOTIC
THERAPY/arrhythmia/atrial/atrial
fibrillation/bleeding/CARDIOVERSION/chronic/complications/control/coronary
artery disease/disease/DRUGS/falls/FAMILY/fibrillation/guidelines/heart/heart
failure/high
risk/history/hypertension/management/medical/METAANALYSIS/PHYSICIAN
/PHYSICIANS/prevention/risk/sinus rhythm/stroke/therapy/thromboembolic
complications/TRANSESOPHAGEAL ECHOCARDIOGRAPHY/Warfarin
Kannel, W.B., Wilson, P.W.F. and Zhang, T.J. (1991), The Epidemiology of Impaired
Glucose-Tolerance and Hypertension. American Heart Journal, 121 (4),
1268-1273.
Abstract: Epidemiologic research indicates that glucose intolerance and hypertension are
interrelated phenomena, each powerfully predisposing to atherosclerotic
cardiovascular disease. Both diabetic and hypertensive patients have greater
amounts of atherogenic risk factors, including dyslipidemia, hyperuricemia,
elevated fibrinogen, and left ventricular hypertrophy. Diabetic persons have an
increased prevalence of hypertension (50%), and glucose intolerance is more
common in hypertension (15% to 18%). Both share a strong relationship to
excess weight, but the excess of hypertension in diabetic persons occurs in both
lean and obese subjects. Diabetes doubles the risk of hypertension associated
with overweight. The risk of coronary disease, stroke, and peripheral arterial
disease increases with increasing blood pressure to the same degree in diabetic
persons as in nondiabetic persons, but at any level of blood pressure, diabetic
persons have a doubled risk of these outcomes. Both diabetic and hypertensive
patients are particularly prone to silent or unrecognized myocardial infarctions.
Greater efforts at primary prevention of both hypertension and diabetes are
clearly needed, including efforts at weight control, exercise, limitation of salt
intake, and control of blood lipid levels. In either diabetic or hypertensive
candidates for cardiovascular disease, optimization of the chances of avoiding
sequelae requires a comprehensive multifactorial approach. Prevention requires
more than normalization of either the blood sugar or blood pressure. Rational
preventive measures must also include weight reduction, a fat-modified diet,
cessation of smoking cigarettes, raising high-density lipoprotein, lowering low-
density lipoprotein, and reduction of fibrinogen. Hypertension, obesity, insulin
resistance, hyperinsulinemia, hypertriglyceridemia, and low high-density
lipoprotein cholesterol tend to coexist. All these factors accelerate atherogenesis
and may be responsible for the increased propensity of either diabetic or
hypertensive patients to develop coronary heart disease. Treatments that worsen
these features in hypertensive or diabetic patients are best avoided
Keywords:
DISEASE/FRAMINGHAM/HEART/MYOCARDIAL-INFARCTION/RISK-FA
CTORS
Singer, D.E., Hughes, R.A., Gress, D.R., Sheehan, M.A., Oertel, L.B., Maraventano,
S.W., Blewett, D.R., Rosner, B. and Kistler, J.P. (1992), The Effect of Aspirin on
the Risk of Stroke in Patients with Nonrheumatic Atrial-Fibrillation - the Baataf
Study. American Heart Journal, 124 (6), 1567-1573.
Abstract: Recent randomized trials have consistently demonstrated the marked efficacy
of warfarin in reducing the risk of stroke caused by nonrheumatic atrial
fibrillation. These trials have provided conflicting evidence on the effect of
aspirin. We report the aspirin analysis from the BAATAF study, a trial in which
control patients could choose to take aspirin. There were two strokes in 446
person-years with warfarin (annual rate of 0.45%); eight strokes in 206
person-years with aspirin, most at 325 mg per day (annual rate of 3.9%); and five
strokes in 271 person-years among patients taking neither aspirin nor warfarin
(annual rate of 1.8%). Simultaneously controlling for the other significant
determinants of stroke in the BAATAF study (age, mitral annular calcification,
and clinical heart disease), the relative rates (95% confidence interval) of stroke
were: (1) warfarin/aspirin = 0.135 (0.029 to 0.64); (2) aspirin/(no aspirin and no
warfarin) = 1.95 (0.64 to 5.97); and (3) warfarin/(no aspirin and no warfarin)
0.263 (0.051 to 1.36). Our "treatment received" analysis argues that warfarin is
strikingly more effective than aspirin in preventing stroke in nonrheumatic atrial
fibrillation
Keywords: FRAMINGHAM/HEART/INTERNAL/PREVENTION/RANDOMIZED
TRIAL/THERAPY/THROMBOEMBOLIC COMPLICATIONS/WARFARIN
Black, I.W., Hopkins, A.P., Lee, L.C.L. and Walsh, W.F. (1993), Evaluation of
Transesophageal Echocardiography Before Cardioversion of Atrial-Fibrillation
and Flutter in Nonanticoagulated Patients. American Heart Journal, 126 (2),
375-381.
Abstract: This study prospectively evaluated the role of transesophageal
echocardiography (TEE) in screening for atrial thrombi before electrical
cardioversion in 40 nonanticoagulated patients with nonvalvular atrial fibrillation
(n = 33) or atrial flutter (n = 7). Transthoracic echocardiography did not detect
atrial thrombus in any patient. TEE detected left atrial appendage thrombi in five
patients (12%, p = 0.03), significantly associated with left ventricular systolic
dysfunction (p = 0.02) and left atrial spontaneous echo contrast (p = 0.04).
Cardioversion was cancelled in the five patients with thrombi and in two patients
with spontaneous reversion before planned cardioversion. Cardioversion was
successful in 25 (76%) of the 33 remaining patients. Cerebral embolism occurred
24 hours after successful cardioversion in one patient with atrial fibrillation and
left ventricular dysfunction, who had left atrial spontaneous echo contrast, but no
thrombus was detected by TEE before cardioversion. Repeat TEE after embolism
showed a fresh left atrial appendage thrombus and increased left atrial
spontaneous echo contrast. These results indicate that TEE improves the
detection of left atrial appendage thrombi in candidates for cardioversion, in
whom the procedure may be deferred. However, the exclusion by TEE of
preexisting atrial thrombi before cardioversion does not eliminate the risk of
embolism after cardioversion because of persistent atrial stasis and de novo
thrombosis
Keywords:
ANTICOAGULATION/HEART/MITRAL-STENOSIS/PREVENTION/RISK/S
TROKE/THERAPY/THROMBUS
Hennekens, C.H. (1994), Platelet Inhibitors and Antioxidant Vitamins in
Cardiovascular- Disease. American Heart Journal, 128 (6), 1333-1336.
Abstract: Considerable research attention has focused on the possible roles of platelet
inhibition, principally using aspirin, and antioxidant vitamins in reducing the
risks of cardiovascular disease. Data from large-scale randomized trials indicate
that aspirin reduces subsequent vascular events among patients with prior
myocardial infarction, stroke, transient ischemic attacks, or unstable angina, as
well as among patients with acute evolving myocardial infarction. In primary
prevention trials, the Physicians' Health Study showed a clear benefit in
decreasing risk of a first myocardial infarction in men; the data on stroke and
total number of deaths from vascular causes are inadequate. The Women's Health
Study, a trial now under way among apparently healthy women, will provide
direct evidence on the balance of risks and benefits of aspirin in primary
prevention. Antioxidant vitamins are hypothesized to decrease cardiovascular
disease risk by several mechanisms, including inhibition of oxidation of
low-density lipoprotein cholesterol and decreasing uptake into the coronary
endothelium. Promising results have emerged from observational studies, which
show that people with high intakes of antioxidant vitamins through diet or
supplements have lowered risks of cardiovascular disease; however, unknown or
unmeasured factors associated with high antioxidant vitamin intake may explain
all or part of the observed associations. Randomized trials to provide reliable
data are now ongoing among apparently healthy men and women, as well as
among survivors of prior cardiovascular disease events
Keywords: angina/ASPIRIN/cardiovascular disease/CHOLESTEROL/diet/disease
risk/E CONSUMPTION/endothelium/HEART/LOW-DENSITY
LIPOPROTEIN/myocardial infarction/observational
studies/prevention/PRIMARY PREVENTION/randomized
trials/RISK/stroke/transient/trials/vascular/WOMEN
Cheng, T.O. (1994), Atrial-Fibrillation, Stroke, and Antithrombotic Treatment.
American Heart Journal, 127 (4), 961-968
Keywords: COMPLICATIONS/FRAMINGHAM/HEART/INTENSITIES/ORAL
ANTICOAGULANT-THERAPY/PREVENTION/RISK/VALVULAR
HEART-DISEASE/WARFARIN
Archer, S.L., James, K.E., Kvernen, L.R., Cohen, I.S., Ezekowitz, M.D. and Gornick,
C.C. (1995), Role of Transesophageal Echocardiography in the Detection of Left
Atrial Thrombus in Patients with Chronic Nonrheumatic Atrial-Fibrillation.
American Heart Journal, 130 (2), 287-295.
Abstract: Transesophageal echocardiography was used to assess cardiac abnormalities
associated with embolization in patients who had completed the Department of
Veterans Affairs Cooperative Study of Stroke Prevention in Nonrheumatic Atrial
Fibrillation at the Minneapolis and West Haven Department of Veterans Affairs
Medical Centers without an embolic event. Patients were men, 71 +/- 7 years old,
with atrial fibrillation of 6.2 +/- 4.3 years' duration who had received warfarin (n
= 32) or placebo (n = 23) for 2 years. Thrombi were found in 5 of 55 patients
(warfarin 4 and placebo 1; p = 0.39); spontaneous echo contrast was seen in 4 of
5 patients. Other abnormalities identified included spontaneous echo contrast
(47%), patent foramen ovale (54%), atrial septal aneurysm (7.3%), and left
ventricular thrombus (3.6%). During 34 months of posttreatment follow-up, 5
patients had a stroke (1 fatal), and 10 died. Potential sources of emboli did not
predict subsequent outcome. Thus warfarin therapy did not preclude the presence
of thrombi. Stroke reduction likely involves the prevention of emboli from
sources in addition to the atrial appendage
Keywords: APPENDAGE THROMBI/atrial fibrillation/atrial septal
aneurysm/DIAGNOSIS/echocardiography/emboli/fibrillation/HEART/LEFT-VE
NTRICULAR THROMBI/patent foramen ovale/PLATELET
SCINTIGRAPHY/PREVALENCE/PREVENTION/SPONTANEOUS ECHO
CONTRAST/STROKE/thrombus/TWO-DIMENSIONAL
ECHOCARDIOGRAPHY/WARFARIN
Nendaz, M.R., Sarasin, F.P., Junod, A.F. and Bogousslavsky, J. (1998), Preventing
stroke recurrence in patients with patent foramen ovale: Antithrombotic therapy,
foramen closure, or therapeutic abstention? A decision analytic perspective.
American Heart Journal, 135 (3), 532-541.
Abstract: Emphasis on the role of patent foramen ovale as a potential risk factor for
ischemic paradoxical stroke has recently increased. Current therapeutic options
for secondary stroke prevention include long-term antithrombotic therapies and
invasive closure of the defect, but selective indications have not been evaluated.
Therefore we developed a Markov-based decision analysis model for a
hypothetical cohort of patients 55 years of age with presumed paradoxical
embolism, measuring for each therapy the risks of stroke recurrence, treatment-
related complications, and death after 5 years and the quality- adjusted life-years.
Over a wide range of stroke risk recurrence (0.8% per year to 7% per year), the
gain provided by closure of the defect exceeded the one obtained by other
therapeutic options. When the risk exceeded 0.8% per year and 1.4% per year,
respectively, this was also verified for anticoagulation and antiplatelet therapies
compared with therapeutic abstention. Therapeutic abstention was the preferred
strategy under 0.8% per year. Sensitivity analyses identified key parameters
influencing the choice of therapy. These included estimates of stroke recurrence,
bleeding rates, surgery-related case fatality rates, and age. Considering the risks
of treatment and the devastating consequences of a recurrent stroke, our model
suggests that if the estimated risk of paradoxical stroke recurrence is >0.8% per
year, therapeutic abstention becomes the worst option. Above this threshold
secondary stroke prevention with anticoagulation therapy or surgical closure of
the defect is the preferred strategy, and assessment of both the risk of stroke
recurrence and the risk related to therapeutic options should guide individual
therapeutic decision making
Keywords: age/anticoagulation/ATRIAL SEPTAL-DEFECT/case
fatality/complications/CRYPTOGENIC STROKE/decision
analysis/decision-making/embolism/FOLLOW-UP/foramen
ovale/HEART/LIFE/NATURAL-HISTORY/PARADOXICAL
EMBOLISM/patent/patent foramen
ovale/prevention/recurrence/RISK/stroke/stroke prevention/SURGICAL
CLOSURE/therapy/TRANSCATHETER CLOSURE/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/treatment
Sherman, S.E., D'Agostino, R.B., Silbershatz, H. and Kannel, W.B. (1999), Comparison
of past versus recent physical activity in the prevention of premature death and
coronary artery disease. American Heart Journal, 138 (5), 900-907.
Abstract: Background People who are physically active live longer, but it is unclear
whether this is because of physical activity in the distant or more recent post.
Methods We assessed activity levels in 5209 men and women in the Framingham
Heart Study from 1956 to 1958 and again from 1969 to 1973. We included
individuals who were alive and without cardiovascular disease in the period 1969
to 1973. The primary outcome was death from all causes during the 16 years
after the 1969 to 1973 assessment. Secondary outcomes were incidence and
mortality rate of: cardiovascular disease. We used Cox proportional hazards
regression to calculate the relative risk of being sedentary, both unadjusted and
controlling for smoking, weight, systolic blood pressure, cholesterol, glucose
intolerance, left ventricular hypertrophy, chronic obstructive pulmonary disease,
and cancer. Results The overall 16-year mortality rate was 37% for men and 27%
For women. When both distant and recent activity levels were included along
with major cardiovascular disease risk Factors, for recent activity the most active
tertile had lower overall mortality rate than the least active tertile for men (risk
ratio 0.58, 95% confidence interval, 0.43-0.79) and women (risk ratio 0.61, 95%
confidence interval, 0.45-0.82). For distant activity there was no difference in
overall mortality rate between the most and least active tertiles either for men or
for women. Adjusting for major cardiovascular disease risk factors had little
effect on the results. Conclusions The reduction in overall mortality rates is more
associated with recent activity than distant activity. These results suggest that for
sedentary patients, it may never be tao late to begin exercising
Keywords: blood pressure/cardiovascular/cardiovascular disease/cholesterol/coronary
artery disease/DEPRESSION/disease
risk/EXERCISE/glucose/HEALTH/HEART/hypertrophy/incidence/left
ventricular hypertrophy/MEN/MORTALITY/physical
activity/prevention/relative risk/risk/risk factors/smoking/STROKE/systolic
blood pressure/WOMEN
Flaker, G.C., McGowan, D.J., Boechler, M., Fortune, G. and Gage, B. (1999),
Underutilization of antithrombotic therapy in elderly rural patients with atrial
fibrillation. American Heart Journal, 137 (2), 307-312.
Abstract: Background Antithrombotic agents are underutilized in elderly patients with
atrial fibrillation. In a peer-review audit of antithrombotic use in Missouri, rural
patients were given antithrombotic therapy less often than rural patients for
unclear reasons. Methods and Results The charts of 597 hospitalized Medicare
patients discharged between October 1, 1993, and December 31, 1994, from
urban and rural hospitals in Missouri were reviewed. In addition to
antithrombotic therapy prescribed at the time of discharge, patient and physician
information, relative contraindications to antithrombotic therapy, and risk factors
for stroke were identified. Rural and urban patients were similar in terms of age,
sex, and risk factors for stroke. At least one stroke risk factor was noted in 87%
of rural patients and in 84% of urban patients. Urban patients were more likely to
have a relative contraindication to antithrombotic therapy compared with rural
patients (66% vs 54%, P = .04) but received antithrombotic therapy more often
(58% vs 47%, P = .02). Cardiologists prescribed antithrombotic therapy
significantly more often than noncardiologists (69% vs 52%, P = .003).
Conclusions Elderly rural patients with atrial fibrillation receive antithrombotic
therapy less frequently than urban patients despite having a similar high-risk
profile and fewer relative contraindications. Primary care physicians prescribe
antithrombotic therapy less often than cardiologists, which is one of the reasons
for this underutilization
Keywords: ACUTE
MYOCARDIAL-INFARCTION/age/ANTICOAGULATION/antithrombotic/ant
ithrombotic therapy/atrial fibrillation/audit/DRUG-
THERAPY/elderly/EXPERIENCE/fibrillation/HEART/high risk/HOSPITAL
CARDIAC-ARREST/hospitals/PHYSICIANS/PREVENTION/risk/risk
factor/risk factors/risk factors for
stroke/sex/STROKE/therapy/URBAN/WARFARIN
Labovitz, A.J. (1999), Transesophageal echocardiography and unexplained cerebral
ischemia: A multicenter follow-up study. American Heart Journal, 137 (6),
1082-1087.
Abstract: Background Transesophageal echocardiography (TEE) continues to play a
prominent role in the evaluation of patients with unexplained cerebral ischemia.
The STEPS Study Group (Significance of Transesophageal Echocardiography in
the Prevention of Recurrent Stroke) was established to further examine the
clinical significance of TEE findings in patients with suspected cardiac source of
embolus and to assess the impact of these findings with respect to specific
therapy and the prevention of recurrent events. Methods A total of 242 patients
from 15 institutions within the United States underwent TEE study for evaluation
of unexplained cerebral ischemia. Over a 1-year period, detailed follow-vp was
obtained with respect to recurrent stroke, transient ischemia attacks, or
documented embolic events as well as detailed information concerning
nonrandomized antithrombotic therapy. Results Recurrent stroke occurred in 17
of 132 (13%) of the patients in the aspirin group versus 5 of 110 (5%) of the
patients receiving warfarin therapy (P .05) for any
events except hospitalization for unstable angina. There were too few events to
demonstrate separately significant effects in women; the estimated relative risk
reduction with pravastatin was 11% (95% Cl -18%-33%) for coronary heart
disease death or nonfatal myocardial infarction, 18% (95% Cl -25%-46%) for
coronary heart disease death, 16% (95% Cl -19%-41%) for myocardial infarction,
and 17% (95% Cl -2%-33%) for coronary heart disease death, myocardial
infarction, or coronary revascularization. Conclusions The study had the largest
secondary-prevention female cohort studied thus far, but was not adequately
powered to show separate effects in women. Nevertheless, the results were
consistent with the main results of this and other trials in showing reduced risks
with cholesterol-lowering treatment
Keywords: angina/Australia/cardiovascular/cardiovascular disease/cardiovascular
events/CHOLESTEROL/cholesterol-lowering/coronary heart disease/coronary
revascularization/death/DESIGN/disease/heart/heart
disease/hospitalization/infarction/LIPID/men/mortality/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/pravastatin/rehabilitation/relative
risk/results/revascularization/risk/risks/secondary
prevention/stroke/therapy/treatment/TRIAL/trials/unstable angina/USA/women
Connolly, S.J. (2003), Preventing stroke in patients with atrial fibrillation: Current
treatments and new concepts. American Heart Journal, 145 (3), 418-423.
Abstract: Atrial fibrillation (AF), is common, and it increases the risk of stroke.
Placebo-controlled trials consistently showed that warfarin reduces the risk of
stroke by two thirds, and a meta- analysis of trials of aspirin show a one-fifth
reduction. Meta- analysis of trials directly comparing warfarin and aspirin shows
that warfarin reduces the risk of stroke compared with aspirin by about one third.
Major advisory bodies recommend risk stratification of patients with AF and
prophylactic therapy with warfarin for patients at higher risk. There are several
problems with warfarin therapy, which have resulted in a widely documented
underuse. These problems include a narrow therapeutic window, marked
variability in pharmacokinetics, and contraindications. There are new promising
approaches to stroke prevention in AF. One of these is combination antiplatelet
therapy. In a large randomized trial, the combination of dipyridamole and aspirin
has been shown to have additive benefits against stroke. The combination of
clopidogrel and aspirin results in additive benefits against vascular events, with
only a modest increase in bleeding. A trial of combined antiplatelet therapy in
AF is warranted. Occlusion of the left atrial appendage, either with a transvenous
device or with surgery, is another strategy that is being explored. A direct
thrombin inhibitor, ximelagatran, has been shown to have an excellent
pharmacokinetic profile and is being developed as an oral agent for stroke
prevention in AF, and it will not need regular monitoring
Keywords: AF/antiplatelet/ANTIPLATELET THERAPY/ANTITHROMBOTIC
THERAPY/ASPIRIN/atrial/atrial appendage/atrial
fibrillation/benefits/bleeding/CARDIOVERSION/clopidogrel/combination/dipyr
idamole/fibrillation/HEART/HIGH-RISK PATIENTS/left atrial
appendage/monitoring/new
concepts/pharmacokinetics/prevention/randomized/randomized
trial/results/risk/risk stratification/SECONDARY PREVENTION/stroke/stroke
prevention/surgery/TERM ANTICOAGULATION/therapy/thrombin/thrombin
inhibitor/THROMBOEMBOLISM/TRIAL/trials/USA/vascular/vascular
events/warfarin/WARFARIN USE/ximelagatran
Malinin, A.I., O'Connor, C.M., Dzhanashvili, A.I., Sane, D.C. and Serebruany, V.L.
(2003), Platelet activation in patients with congestive heart failure: Do we have
enough evidence to consider clopidogrel? American Heart Journal, 145 (3),
397-403.
Abstract: Our understanding of the pathogenesis of congestive heart failure (CHF) has
improved remarkably in recent years. However, despite better knowledge and
novel pharmaceutical strategies, this disease is still one of the most brutal killers
in the Western world. The pathophysiology of CHF is complex, and much of our
comprehension revolves strictly around the neurohormonal and mechanical.
mechanisms involved. It has been suggested that CHF is associated with altered
hemostasis, but whether a prothrombotic state contributes to the pathogenesis
and progression of the disease is still not well known. The purpose of this review
article is to discuss our current knowledge of platelet activation in patients with
CHF and the potential role of antiplatelet agents in preventing these hemostatic
abnormalities. Clopidogrel is an established medication that reduces the
incidence of,stroke, myocardial ischemia, or vascular death. It is currently the
drug of choice in the prophylaxis of subacute stent thrombosis and postischemic
stroke treatment. Promising results of the most resent trials (Clopidogrel versus
Aspirin in Patients at Risk of Ischemic Events [CAPRIE] and Clopidogrel in
Unstable angina to prevent Recurrent Events [CURE]) may expand future
indications of this ADP receptor antagonist for prevention of thrombotic
complications in the CHF population. Currently conducted clinical trials
(Warfarin and Antiplatelet Therapy in Chronic Heart Failure [WATCH] and
Plavix Use for Treatment of Congestive Heart Failure [PLUTO-CHF] should
clarify the, role of clopidogrel in these patients
Keywords: abnormalities/activation/ACUTE
MYOCARDIAL-INFARCTION/ADHESION MOLECULES/ADP/ADP
receptor/ADP receptor antagonist/ADP
RECEPTORS/angina/antiplatelet/antiplatelet agents/clinical
trials/clopidogrel/complications/congestive heart failure/CONVERTING
ENZYME-INHIBITORS/CORONARY-ARTERY DISEASE/death/DILATED
CARDIOMYOPATHY/disease/drug/ESSENTIAL-HYPERTENSION/FLOW
CONDITIONS/heart/heart
failure/hemostasis/incidence/ischemia/knowledge/mechanisms/myocardial/patho
genesis/pathophysiology/platelet/platelet
activation/population/prevention/progression/prophylaxis/results/review/review
article/stent/stroke/stroke
treatment/thrombosis/treatment/trials/UNITED-STATES/USA/vascular/VON-W
ILLEBRAND-FACTOR/Warfarin
Fields, W.S. (1983), Aspirin for Prevention of Stroke - A Review. American Journal of
Medicine, 74 (6A), 61-65
Mcginnis, J.M. (1990), Prevention in 1989 - the State of the Nation. American Journal
of Preventive Medicine, 6 (1), 1-5.
Abstract: Substantial gains have been made in the health of Americans since 1970,
notably the 50% decline in infant mortality; the increase of nearly 4 years in life
expectancy for both men and women; the declines in stroke and coronary heart
disease mortality of 54% and 43%, respectively; the decline of injury deaths by
about 30%; and the decline in deaths from nontobacco related cancers by about
10%. These improvements in the overall national health profile have been
accompanied by enhanced public awareness of the relationship between behavior
and health outcomes as well as sustained behavior change among certain groups.
On the other hand, the research advances of the last two decades have given the
nation an even keener understanding of how short of our full potential we are
falling. International comparisons as well as data on the status of minority and
disadvantaged groups in the United States confirm some of these shortfalls-in
particular with respect ot infant mortality, diabetes, motor vehicle deaths, suicide,
and homicide. The complex etiologies of these problems require the forging of
strong alliances with sectors outside the health arena, such as business and
education, to seek solutions. [Am J Prev Med 1990;6:1-5]
Avis, N.E., Mckinlay, J.B. and Smith, K.W. (1990), Is Cardiovascular Risk Factor
Knowledge Sufficient to Influence Behavior. American Journal of Preventive
Medicine, 6 (3), 137-144.
Abstract: This paper examines the level of cardiovascular risk knowledge in the general
population and the relationship between such knowledge and behavior. The
following questions are addressed: (1) How informed is the general population
about what persons can do to reduce their risk of cardiovascular disease? (2)
How do sociodemographic factors, self-perceptions of health, and cardiovascular
risk factors relate to knowledge? (3) Is there a relationship between knowledge
and behavior? (4) What might explain apparent inconsistencies between
knowledge and behavior? The data used in this paper derive from a random
sample of 732 men and women form the greater Boston area. We assessed
cardiovascular risk factor knowledge by asking respondents what specific steps a
person could take to make a heart attack or stroke less likely. Risk factors
(including physiological measures), sociodemographic factors, and self-
perceptions of health also were measured. Results showed that respondents were
most knowledgeable about the relationships of exercise and cholesterol to heart
disease. Knowledge was related positively to education, being female, and
exercising. When we compared knowledge with behavior, results showed that for
smokers and those who were overweight, risk was related to awareness, thus
suggesting that knowledge does not lead necessarily to risk-reducing behavior.
Implications of these results in terms of education and prevention are discussed
Schoenberger, J.A. (1991), Epidemiology and Evaluation - Steps Toward Hypertension
Treatment in the 1990S. American Journal of Medicine, 90 S3-S7.
Abstract: The percentage of persons in the United States over age 65- especially over
85-is increasing more rapidly than other age groups. Two thirds of people over
age 65 have blood pressure higher than 140 mm Hg systolic or 90 mm Hg
diastolic. Isolated systolic hypertension (systolic blood pressure > 160 mm Hg
with diastolic blood pressure 5 cm) left
atrium, better left ventricular performance by echo, and less mitral regurgitation.
After a mean follow-up of 26 months, 51% of patients remained in sinus rhythm
and 49% of patients developed recurrent AF, including 12% who had AF, as seen
on all follow- up electrocardiograms. Clinical factors predicting recurrent AF
were age, heart failure, and myocardial infarction. An enlarged left atrium was
associated with recurrent intermittent AF; an enlarged left ventricle predicted
conversion to constant AF. Thus, clinical and echocardiographic parameters
predict recurrent AF in patients with intermittent nonvalvular AF
Keywords: atrial
fibrillation/CARDIOVERSION/DISEASE/fibrillation/heart/hypertension/MAIN
TENANCE/MORTALITY/myocardial infarction/SINUS
RHYTHM/THERAPY/treatment
Jacobowitz, G.R., Adelman, M.A., Riles, T.S., Lamparello, P.J. and Imparato, A.M.
(1995), Long-Term Follow-Up of Patients Undergoing Carotid Endarterectomy
in the Presence of A Contralateral Occlusion. American Journal of Surgery, 170
(2), 165-167.
Abstract: BACKGROUND: Patients with stenos4is of one carotid artery and occlusion
of the contralateral carotid artery (stenosis- occlusion) who are treated medically
am at high risk for stroke. We have recently reported that carotid endarterectomy
on the stenotic artery has a low perioperative risk in these patients, We now
present follow-up data to define the long-term effectiveness of this operation.
PATIENTs AND METHODS: From 1985 to 1991, 135 patients with
stenosis-occlusion underwent endarterectomy of the stenotic carotid artery:
Selective intra- arterial shunting was performed based on mental status changes
under regional anesthesia, preoperative neurologic deficit, or evidence of
preoperative cerebral infarction on computed tomography scan. Shunting was
used in 70 patients (52%), Saphenous vein was used for parch closure in 132
patients (98%), and polytetrafluroethylene in 3 (2%). RESULTS: By life- table
analysis, 92% of patients have remained stroke-free at 5 years. Fourteen deaths,
none related to cerebrovascular disease, have occurred during follow-up. The
life-table cumulative Stroke-free survival rate at 5 years is 74%, and the overall
survival rate is 82%. CONCLUSION: Carotid endarterectomy in the presence of
a contralateral occlusion provides long-term benefit to the patient with respect to
prevention of stroke. With lower perioperative stroke rates and proven long-term
benefit, carotid endarterectomy of the stenotic artery should be the treatment of
choice in the patient with stenosis-occlusion
Keywords: ARTERY OCCLUSION/carotid/carotid endarterectomy/cerebrovascular
disease/computed
tomography/endarterectomy/NATURAL-HISTORY/prevention/RISK/STENOSI
S/stroke/treatment
Giles, W.H., Croft, J.B., Keenan, N.L., Lane, M.J. and Wheeler, F.C. (1995), The
Validity of Self-Reported Hypertension and Correlates of Hypertension
Awareness Among Blacks and Whites Within the Stroke Belt. American Journal
of Preventive Medicine, 11 (3), 163-169.
Abstract: Hypertension surveillance activities increasingly are relying on information
obtained by self-report. However, limited information is available concerning the
validity of such data, especially among populations residing within the stroke
belt. We used interview information and blood pressure measurements from the
South Carolina Cardiovascular Disease Prevention Project to determine the
validity of self-reported hypertension and the correlates of hypertension
awareness among 2,210 whites and 704 blacks who participated in the program
in 1987. The sensitivity, specificity, positive predictive value, and negative
predictive value of self-reported hypertension were 79%, 91%, 76%, and 93%
among white women; 82%, 88%, 79%, and 89% among black women; 62%,
91%, 75%, and 85% among white men; and 72%, 89%, 78%, and 85% among
black men, respectively. Groups with highest sensitivity included women,
persons older than age 39 years, and those who had seen a physician for
preventive care within the last year. Correlates of hypertension awareness
included an older age, visit to a physician for preventive care, and a family
history of high blood pressure. Among hypertensive blacks, overweight persons
were substantially more likely than nonoverweight persons to be aware of their
hypertension (odds ratio [OR] = 4.6, 95% confidence intervals [CI] = 1.9, 10.7 in
black women and OR = 4.4, 95% CI = 1.0, 17.9 in black men). The validity of
self- reported hypertension was relatively high in all race-sex groups. There is a
need to increase hypertension awareness among hypertensive blacks who are not
overweight
Keywords: blood pressure/high blood pressure/history/hypertension/stroke/women
Mansour, M.A., Mattos, M.A., Hood, D.B., Hodgson, K.J., Barkmeier, L.D., Ramsey,
D.E. and Sumner, D.S. (1995), Detection of Total Occlusion, String Sign, and
Preocclusive Stenosis of the Internal Carotid-Artery by Color-Flow Duplex
Scanning. American Journal of Surgery, 170 (2), 154-158.
Abstract: BACKGROUND: Stroke prevention depends on the accurate differentiation of
surgically treatable preocclusive lesions from total occlusions of the internal
carotid artery. This prospective study was undertaken to review the accuracy of
color-flow duplex scanning for identifying carotid string signs, focal
preocclusive lesions (95% to 99% stenoses), and total occlusion of the internal
carotid artery. MATERIALS AND METHODS: Over an 18-month period, 4,362
patients underwent color-flow duplex scanning of the carotid arteries.
Angiograms of 596 internal carotid arteries were available for comparison with
the duplex scan findings, Total occlusion was diagnosed by the absence of flow
in internal carotid arteries visualized on B-mode scanning. Preocclusive lesions
were identified by a trickle of flow in the vessel lumen. RESULTS: Of 65
color-flow duplex scans that predicted total occlusion, 64 (98%) were confirmed
by angiography. The negative predictive value for total occlusion was 99%,
Twenty-six (87%) of 30 string signs and focal 95% to 99% stenoses were
correctly identified. Color- flow scanning prediction of preocclusive lesions was
accurate in 84% of 31 cases, Low velocities in the internal carotid artery were
usually associated with a string sign, and high velocities with a focal
preocclusive lesion. CONCLUSIONS: Color-flow duplex scanning accurately
differentiates between stenotic and totally occluded internal carotid arteries.
Identification of preocclusive lesions is not as accurate but the results are
promising, Arteriographic confirmation of duplex scan findings is necessary only
when scans are equivocal
Keywords: ARTERIOGRAPHY/carotid/carotid arteries/DISEASE/DOPPLER
ULTRASOUND/duplex
scanning/ENDARTERECTOMY/focal/prevention/prospective study
Ende, D.J., Chopra, P.S. and Rao, P.S. (1996), Transcatheter closure of atrial septal
defect or patent foramen ovale with the buttoned device for prevention of
recurrence of paradoxic embolism. American Journal of Cardiology, 78 (2),
233-236
Keywords: patent foramen ovale/prevention/STROKE
Graafmans, W.C., Ooms, M.E., Hofstee, H.M.W., Bezemer, P.D., Bouter, L.M. and Lips,
P. (1996), Falls in the elderly: A prospective study of risk factors and risk
profiles. American Journal of Epidemiology , 143 (11), 1129-1136.
Abstract: xIn this prospective study, the authors determined intrinsic risk factors for falls
and recurrent falls and constructed a risk profile that indicated the relative
contribution of each risk factor and also estimated the probabilities of falls and
recurrent falls, In 1992, over a 28-week period, falls were recorded among 354
elderly subjects aged 70 years or over who were living in homes or apartments
for the elderly in Amsterdam and the vicinity, During the study period, 251 falls
were reported by 126 subjects (36%), and recurrent falls (greater than or equal to
2 falls) were reported by 57 subjects (16%). Associations of falls and recurrent
falls with potential risk factors were identified in logistic regression models.
Mobility impairment regarding one or more of the tested items (i.e., impairment
of balance, leg-extension strength, and gait) was associated with falls (adjusted
odds ratio (OR) = 2.6) and was strongly associated with recurrent falls (OR =
5.0). Dizziness upon standing was associated with falls (OR = 2.1) and recurrent
falls (OR = 2.1). However, several risk factors were associated with recurrent
falls only: history of stroke (OR = 3.4), poor mental state (OR = 2.4), and
postural hypotension (OR = 2.0). The authors constructed a risk profile for
recurrent falls that included the five risk factors mentioned above. Inclusion of
all risk factors in the profile implied an 84% probability of recurrent falls over a
period of 28 weeks, compared with 3% when no risk factor was present. The
probability of recurrent falls ranged only from 11% to 29% when predicted by
number of falls occurring in the previous year. Physical activity, use of high-risk
medication, and the use of vitamin D-3, which was randomly allocated to the
participants, were not strongly related to either falls or recurrent falls. In
conclusion, a large range of probabilities of falls, especially of recurrent falls,
was estimated by the risk profiles, in which mobility impairment was the major
risk factor. Recurrent fallers may therefore be especially amenable to prevention
based on mobility improvement
Keywords: accidental
falls/aged/COMMUNITY/elderly/EPIDEMIOLOGY/history/INJURIOUS
FALLS/MUSCLE STRENGTH/prevention/risk factors/stroke/WOMEN
Morley, J., Marinchak, R., Rials, S.J. and Kowey, P. (1996), Atrial fibrillation,
anticoagulation, and stroke. American Journal of Cardiology, 77 (3), A38-A44.
Abstract: There is a demonstrated statistical association between atrial fibrillation,
rheumatic valvular disease, and embolic stroke. This article assesses the results
of 6 major clinical trials (AFASAK, BAATAF, SPINAF, SPAF [parts I and II],
CAFA and EAFTA- see text for trial names). Multivariate analysis revealed 4
independent clinical features that identified patients with atrial fibrillation at an
increased risk for stroke: hypertension, increasing age, previous transient
ischemic attack, and diabetes mellitus. Without anticoagulation therapy, patients
with any of these risk factors had a 4% annual risk of stroke. Patients with
cardiac disorders such as congestive heart failure and coronary artery disease
have a stroke rate 3 times higher than patients without any risk factors; patients
with atrial fibrillation but no concomitant risk factors or structural heart disease
seemed to have little concomitant risk for stroke. Meta-analysis revealed a 64%
reduction of risk for stroke in patients treated with warfarin, as compared with
placebo. The value of warfarin therapy in patients >75 years old is less clear
because of a high risk of hemorrhagic complications
Keywords: anticoagulation/atrial fibrillation/clinical trials/COMPLICATIONS/diabetes
mellitus/fibrillation/heart/hypertension/MANAGEMENT/PREVENTION/risk/ris
k factors/stroke/THERAPY/transient/transient ischemic
attack/trials/WARFARIN
Lonn, E.M., Yusuf, S., Doris, C.I., Sabine, M.J., Dzavik, V., Hutchison, K., Riley, W.A.,
Tucker, J., Pogue, J. and Taylor, W. (1996), Study design and baseline
characteristics of the study to evaluate carotid ultrasound changes in patients
treated with Ramipril and vitamin E: SECURE. American Journal of Cardiology,
78 (8), 914-919.
Abstract: Atherosclerotic cardiovascular disease remains a major cause of mortality and
morbidity in most developed countries. Experimental and clinical evidence
suggests that angiotensin- converting enzyme inhibitors and vitamin E therapy
may retard the atherosclerotic process; however, definitive proof in humans is
lacking. The Study to Evaluate Carotid Ultrasound Changes in Patients Treated
with Ramipril and Vitamin E (SECURE) is designed to assess the effects of
ramipril-an angiotensin-converting enzyme inhibitor, at 2 doses: 2.5 mg daily
(which has little effect on lowering blood pressure) and 10 mg daily-and the
antioxidant vitamin E, 400 IU daily, on atherosclerosis progression in 732
patients using ct factorial 3 x 2 study design. High-risk patients with a
documented history of significant cardiovascular disease or with diabetes and
additional risk factors were enrolled and will be followed for 4 years. The extent
and progression of atherosclerosis are assessed noninvasively by B-mode carotid
ultrasonography. The SECURE trial is a substudy of the larger Heart Outcomes
Prevention Evaluation (HOPE) study of 9,541 high-risk patients evaluating the
effects of ramipril and vitamin E on major cardiovascular events (cardiovascular
death, myocardial infarction, and stroke), The 2 studies are complementary.
Whereas HOPE is expected to provide information on major clinical outcomes,
SECURE will shed light on the mechanisms by which these effects may be
mediated
Keywords: angiotensin converting enzyme
inhibitors/ATHEROSCLEROSIS/cardiovascular
events/CLINICAL-TRIAL/CORONARY-DISEASE/E
CONSUMPTION/EVENTS/HEART-
DISEASE/LIPIDS/morbidity/mortality/MYOCARDIAL-INFARCTION/PRAV
ASTATIN/PROGRESSION/risk factors/stroke
Gold, M.R., Ogara, P.T., Buckley, M.J. and DeSanctis, R.W. (1996), Efficacy and safely
of Procainamide in preventing arrhythmias after coronary artery bypass surgery.
American Journal of Cardiology, 78 (9), 975-979.
Abstract: Arrhythmias are common after cardiac surgery and are associated with
hemodynamic compromise, stroke, and prolonged hospitalization. Beta blockers
prevent atrial fibrillation postoperatively, but there are few data regarding the
prophylactic use of type I antiarrhythmic agents or the prevention of ventricular
arrhythmias, Accordingly, we performed a randomized, double-blind,
placebo-controlled study of the effects of oral procainamide on 100 patients
undergoing elective coronary artery bypass surgery, Procainamide was received
for 4 days; the dosage was adjusted for body weight Patients receiving
procainamide had a significant reduction in atrial fibrillation (16 vs 29
patient-days, p 65 years or initial stenosis greater
than or equal to 50% progressed to critical disease in 27% and 39%, respectively
(P less than or equal to 0.05). The cost per stroke prevented ranged from
$143,500 to $418,200 when stratified by initial stenosis. CONCLUSION:
Patients who have undergone a carotid endarterectomy demonstrate a propensity
for progression of carotid stenosis in the unoperated (contralateral) artery, The
cost/benefit ratio may be improved by varying the intensity of duplex
surveillance of the contralateral carotid based on the patient's age and initial
degree of stenosis
Keywords: COST-EFFECTIVENESS/ENDARTERECTOMY/STENOSIS/stroke/stroke
prevention
Johnstone, M.T., Mittleman, M., Tofler, G. and Muller, J.E. (1996), The
pathophysiology of the onset of morning cardiovascular events. American
Journal of Hypertension, 9 (4), S22-S28.
Abstract: Evidence obtained over the past decade indicates that myocardial infarction
(MI) and sudden death are not random events but rather, in many cases, may be
triggered by the daily activities of the subject, The importance of physical or
mental stresses as triggers is suggested by the parallel morning increased onsets
of MI, sudden cardiac death, and stroke. Unstable angina and MI are usually
precipitated by thrombus formation over a disrupted plaque that causes partial or
complete obstruction of coronary artery blood now. This process may be caused
by physiologic factors that lead to rupture of a vulnerable plaque and subsequent
thrombosis. beta-Blockers and aspirin, which can diminish these physiologic
processes, have been shown to blunt or abolish the morning peak of onset of
acute MI. It is hypothesized that occlusive coronary thrombosis occurs when an
atherosclerotic plaque becomes vulnerable to rupture, and mental or physical
stress causes the plaque to rupture. Increases in coagulability or vasoconstriction
triggered by daily activities may also contribute to complete occlusion of the
coronary artery lumen. Recognition of the circadian variation of the onset of
acute cardiovascular disease suggests the need for pharmacologic protection of
patients during the vulnerable periods and provides clues to the mechanism of
disease onset, the investigation of which may lead to improved methods of
prevention
Keywords: acute cardiovascular disease/acute myocardial infarction/ACUTE
MYOCARDIAL-INFARCTION/angina/arterial
thrombosis/aspirin/cardiovascular disease/cardiovascular
events/CASE-CROSSOVER/circadian rhythm/CIRCADIAN
VARIATION/CORONARY-ARTERY
DISEASE/HEART-DISEASE/myocardial infarction/plaque rupture/PLATELET
AGGREGABILITY/POSSIBLE
TRIGGERS/prevention/RESPIRATORY-DISEASE/stroke/SUDDEN
CARDIAC DEATH/thrombosis/thrombus/triggers/UNSTABLE
ANGINA-PECTORIS/vulnerable plaque
Alderman, M.H. (1996), Absolute cardiovascular risk: The basis for deciding to treat.
American Journal of Nephrology, 16 (3), 182-189.
Abstract: It has been convincingly demonstrated that raised blood pressure is a risk
factor for cardiovascular disease and that its reduction saves lives. It seems
logical to suggest that the whole population's blood pressure distribution should
be displaced downwards, since the reduction of blood pressure by only a few
millimeters of mercury, if easily and safely achieved, would produce more
disease prevention than could be attained by any other conceivable clinical
strategy. Physicians already have powerful tools to lower blood pressure in
individual patients, but must make challenging decisions as to when and how to
use them. Blood pressure level is a reflection of relative risk and one of many
risk factors that determine absolute risk. Reduction of blood pressure therefore
does not cure cardiovascular disease, but reduces the risk of developing disease.
The need for hypotensive therapy should be determined by absolute risk and the
opportunity for successful prevention, rather than by a threshold level of blood
pressure. The task of the physician is to assist the patient in assessing the balance
between the potential for benefit and the burden of intervention, and to provide
the best possible care to implement the therapeutic choice that is made
Keywords: absolute risk/blood pressure/BLOOD-PRESSURE
REDUCTION/cardiovascular disease/CORONARY
HEART-DISEASE/EPIDEMIOLOGY/FRAMINGHAM/HYPERTENSION/hyp
otensive therapy/MANAGEMENT/MORTALITY/MYOCARDIAL-
INFARCTION/prevention/PROFILE/relative risk/risk factors/STROKE
Antman, E.M. (1996), Maintaining sinus rhythm with antifibrillatory drugs in atrial
fibrillation. American Journal of Cardiology, 78 67-72.
Abstract: Management of atrial fibrillation is a common and complex clinical problem,
Two major treatment strategies have emerged: suppression of recurrences versus
control of ventricular rate and anticoagulation to reduce the risk of stroke.
Maintaining sinus rhythm offers the hemodynamic benefits of improving
ventricular performance and exercise capacity but may expose the patient to the
risk of proarrhythmia/sudden death and drug- related morbidity, Controlling
ventricular rate helps decrease symptomatic palpitations and improve exercise
capacity but necessitates long-term anticoagulation (which may also be needed
despite the use of antiarrhythmics to suppress recurrences of atrial fibrillation)
with some risk of bleeding, Randomized trials are now needed to define the
relative benefits of these 2 treatment strategies, Such trials should be designed to
provide information on the impact of the 2 approaches on symptoms, exercise
capacity, quality of life, and mortality rate in patients with atrial fibrillation
Keywords: AMIODARONE/anticoagulation/atrial
fibrillation/CARDIOVERSION/control/CONVERSION/drugs/exercise/fibrillati
on/MAINTENANCE/morbidity/mortality/NEW-YORK/PREVENTION/quality
of life/QUINIDINE
THERAPY/risk/SOTALOL/stroke/treatment/trials/WARFARIN/WOMEN
Flam, E., Berry, S., Coyle, A., Dardik, H. and Raab, L. (1996), Blood flow augmentation
of intermittent pneumatic compression systems used for the prevention of deep
vein thrombosis prior to surgery. American Journal of Surgery, 171 (3), 312-315.
Abstract: PURPOSE: TO compare, using Duplex ultrasonography, different intermittent
pneumatic compression (IPC) systems to augment venous blood flow for deep
venous thrombosis (DVT) prevention during and after surgery and during
periods of immobility. METHODS: This cross-over study randomly assigned 26
young, healthy, adult subjects, without history of DVT, hypertension, diabetes,
stroke, vascular or cardiac pathologies, to an order of knee-high, foam,
single-pulse IPC device and thigh-high, vinyl, sequential-pulse pneumatic
compression systems. Prior to making the flow measurement, the girth of the calf
and thigh and length of the leg of each subject were determined. The right leg
was used in this evaluation. RESULTS: The average flow augmentation, which
is a direct measure of the amount of femoral vein blood flow velocity increase
over the base, was 107% +/- 49% with the knee-high system, and 77% +/- 35%
with the thigh-high IPC system (P 0.8) at each speed were then examined for
differences associated with speed. The tangential, radial, and medial-lateral
forces were found to comprise approximately 55, 35, and 10% of the resultant
force, respectively. in addition to duration of stroke and propulsion, the
following variables were found to be stable and to differ with speed (1.3 m/s +/-
SD; 2.2 m/s +/- SD): peak force tangential to the pushrim (45.9 +/- 17.9 N; 62.1
+/- 30 N), peak moment radial to the hub (9.8 +/- 4.5 N.m 13.3 +/- 6 N.m),
maximum rate of rise of the tangential force (911.7 +/- 631.7 N/sec; 1262.3 +/-
570.7 N/sec), and maximum rate of rise of the moment about the hub (161.9 +/-
78.3 N.m/s; 255.2 +/- 115.4 N.m/s). This study found stable parameters that
characterize pushrim forces during wheelchair propulsion and varied with speed,
Almost 50% of the forces exerted at the pushrim are not directed toward forward
motion and, therefore, either apply friction to the pushrim or are wasted.
Ultimately this type of investigation may provide insight into the cause and
prevention of upper limb injuries in manual wheelchair users
Keywords: BIOMECHANICS/biomechanics/CARPAL-TUNNEL
SYNDROME/ERGOMETER/kinetics/MODEL/motion/pain/PARAPLEGIA/PO
WER OUTPUT/prevention/RELIABILITY/spinal cord injury/stroke/UPPER
EXTREMITY/wheelchair/wheelchair propulsion
Arnsten, J.H., Gelfand, J.M. and Singer, D.E. (1997), Determinants of compliance with
anticoagulation: A case-control study. American Journal of Medicine, 103 (1),
11-17.
Abstract: BACKGROUND: The number of patients for whom long-term anticoagulation
is indicated has increased dramatically over the past decade. Good patient
compliance is necessary to safely realize the benefits of anticoagulation, yet
barriers to compliance with anticoagulation therapy have not been studied.
METHODS: We conducted a case-control study in the Anticoagulation Therapy
Unit (ATU) at Massachusetts General Hospital. Forty-three patients who had
been discharged from the ATU for noncompliance (cases) and 89 randomly
selected compliant ATU controls were interviewed. Noncompliant cases had
self-discontinued warfarin or were taking warfarin with inadequate monitoring of
international normalized ratio (INR) levels. Telephone interviews assessed
sociodemographic features, indication for anticoagulation, patient satisfaction,
and health beliefs. RESULTS: Noncompliant cases were more likely to be
younger (mean 53.7 years versus 68.7 years, P 1.2 L, or > 8 cups/d) had an RR of 2.4 (95% CI: 1.5, 3.9)
of dying in the follow-up period compared with men consuming 75 years) who had associated risk factors, warfarin therapy at the
target international normalized ratio (INR) of 2-3, is the best treatment; however,
a combination of low intensity fixed-dose warfarin and aspirin is ineffective.
Thus, the guidelines recommended by the American College of Chest Physicians
should be followed in treating patients with AF. (C)1998 by Excerpta Medica,
Inc
Keywords: AF/ANTICOAGULATION/aspirin/atrial fibrillation/CAFA/clinical
trials/complications/emboli/fibrillation/NEW-YORK/PREVENTION/risk/risk
factors/STROKE/treatment/trials/WARFARIN
Pengo, V., Zasso, A., Barbero, F., Banzato, A., Nante, G., Parissenti, L., John, N.,
Noventa, F. and Dalla Volta, S. (1998), Effectiveness of fixed minidose warfarin
in the prevention of thromboembolism and vascular death in nonrheumatic atrial
fibrillation. American Journal of Cardiology, 82 (4), 433-437.
Abstract: Adjusted-dose warfarin is effective for stroke prevention in patients with
nonrheumatic atrial fibrillation (AF), but the risk of bleeding is high, especially
among the elderly. Fixed minidose warfarin is effective in preventing venous
thromboembolism with low risk of bleeding and no need for frequent clinical
monitoring. Patients > 60 years with nonrheumatic AF were randomized in an
open-labeled trial to receive fixed minidose warfarin (1.25 mg/day) or standard
adjusted-dose warfarin (International Normalized Patio [INR] between 2.0 and
3.0). Primary outcome events were ischemic stroke, peripheral or visceral
embolism, cerebral or fatal bleeding, and vascular death. Secondary end points
were major bleeding, myocardial infarction, and death. This study was
discontinued before completion in light of publication of the Stroke Prevention in
Atrial Fibrillation III trial, which indicated that low-intensity fixed-dose warfarin
treatment (i.e., INP 3.0. No significant difference in primary outcome events was
observed in the abbreviated study. However, the significantly increased
occurrence of ischemic stroke in the fixed minidose warfarin group suggests that
this regimen does not protect patients with nonrheumatic AF. (C)1998 by
Excerpta Medica, Inc
Keywords: AF/atrial
fibrillation/COMPLICATIONS/elderly/embolism/fibrillation/INTENSITY/ische
mic stroke/LOW-DOSE WARFARIN/myocardial
infarction/NEW-YORK/ORAL ANTICOAGULANT
TREATMENT/prevention/PROPHYLAXIS/RABBITS/RANDOMIZED
TRIAL/risk/stroke/stroke
prevention/THERAPY/thromboembolism/THROMBOPLASTIN/THROMBOSI
S/treatment/vascular/warfarin
Keane, D., Zou, L. and Ruskin, J. (1998), Nonpharmacologic therapies for atrial
fibrillation. American Journal of Cardiology , 81 (5A), 41C-45C.
Abstract: The limited efficacy and proarrhythmic risks of antiarrhythmic drug therapies
for atrial fibrillation have led to the exploration of a wide spectrum of alternative
therapeutic approaches. The diversity of the approaches is warranted by the
current absence of a single procedure that can safety and effectively cure atrial
fibrillation. The interventional therapies that are currently under most active
development include implantable atrial defibrillator therapy, prophylactic atrial
pacing in combination with drug therapy, multisite regional pace-entrainment of
atrial fibrillation by rapid pacing, atrial surgery, and catheter ablation for atrial
fibrillation. The current limitations of these procedures include: (1) for the
implantable atrial defibrillator-patient tolerance of low energy shocks and early
recurrence of atrial fibrillation; (2) for prophylactic pacing-limited efficacy in a
small proportion of the total atrial fibrillation population; (3) for multisite
regional pace-entrainment-lack of proved efficacy and difficulty in the expansion
and merging of the entrained regions; (4) for atrial surgery-highly invasive as a
stand-alone procedure; and (5) for catheter ablation-lack of proved long-term
efficacy, shortcomings of currently available technology, and risk of
thromboembolic stroke. It is evident that more basic and clinical research as well
as technologic innovation are needed. However, it is likely that some of these
new therapies, possibly in combination with antiarrhythmic drug therapy, will
offer considerable clinical benefit to selected patients with symptomatic atrial
fibrillation. (C) 1998 by Excerpta Medica, Inc
Keywords: ARRHYTHMIAS/atrial fibrillation/DEFIBRILLATION/development/drug
therapy/fibrillation/HUMANS/implantable atrial defibrillator/INTERNAL
CARDIOVERSION/NEW-YORK/P-WAVE/PREVENTION/recurrence/risk/saf
ety/SHEEP/SINUS RHYTHM/stroke/surgery/therapy/VENTRICULAR CYCLE
LENGTH/WAVE-FORMS
[Anon]. (1998), Secondary prevention. American Journal of Managed Care, 4 (4),
S201-S208.
Abstract: Landmark trials in secondary prevention-the Scandinavian Simvastatin
Survival Study (4S), the Cholesterol and Recurrent Events (CARE) study, and
the Long-term Intervention with Pravastatin in Ischaemic Disease (LIPID)
Study-have consistently demonstrated that lowering low-density lipoprotein
cholesterol (LDL-C) reduces the number of coronary events among patients with
coronary heart disease (CHD). The Pravastatin Atherosclerosis and Myocardial
Infarction (MI) Reduction Analysis, which pooled data from four atherosclerosis
regression trials, revealed that the rate of MI decreased 62% after 3 years and
that all-cause mortality decreased by 46%. The CARE study, the first trial with a
North American population, demonstrated significant reduction in risk for fatal
(CHD) or nonfatal MI (24%), total MI (25%), revascularization procedures
(27%), and stroke (31%). The LIPID, the largest statin trial to date, demonstrated
significant reductions in total mortality (23%), and stroke (20%). The results of
these trials are explored in detail, and a comparison of the populations in the 4S
and CARE trials is provided. The issue of what level of LDL-C reduction
provides maximum benefit is addressed. Although clinical trials have
demonstrated that statins are efficacious, safe, and well tolerated, there is
potential for drug-drug interactions. Pravastatin is metabolized in a different
manner than the other statins and therefore has fewer drug-drug interactions and
serious adverse effects. Pravastatin, with more than 50,000 patient-years of
experience in confirmed clinical trials, is shown to be an optimal therapeutic
choice in secondary prevention for managed care organizations. It reduces the
costs of managing CHD-related events and is cost effective in the treatment of
most CHD patients and compared with other cardiovascular interventions.
Improving physician involvement in secondary prevention is a challenge that
must be met
Keywords: atherosclerosis/CARE/cholesterol/clinical trials/coronary heart
disease/costs/EVENTS/heart/low density
lipoprotein/mortality/PRAVASTATIN/prevention/risk/secondary
prevention/statins/stroke/treatment/trials
Harbison, J.W. (1998), Clinical considerations in selecting antiplatelet therapy in
cerebrovascular disease. American Journal of Health-System Pharmacy, 55
S17-S20.
Abstract: Effective antiplatelet drugs-aspirin, ticlopidine, dipyridamole, and
clopidogrel-are reviewed. Aspirin has remained the pharmacologic foundation of
stroke prevention, primarily because of its low cost. It has been shown to provide
a 22% relative risk reduction of stroke in high-risk patients. Its principal adverse
effect is gastrotoxicity. Ticlopidine has been widely used in patients with a high
risk of stroke who are sensitive to aspirin or in whom aspirin has failed. It has
been associated with a median reduction in adenosine diphosphate- induced
platelet aggregation of 70% in about 8-11 days. Ticlopidine has been shown to
be superior to aspirin at three years in preventing stroke. The principal adverse
effects are diarrhea and rash; there has been a 2.4% occurrence of neutropenia. In
a trial comparing aspirin, dipyridamole, and a combination of the two, the risk of
stroke was 18% lower with aspirin, 16% lower with dipyridamole, and 37%
lower with combination therapy compared with placebo. The adverse-effect
profile of dipyridamole has proven to be less problematic than that of aspirin or
ticlopidine. In a trial comparing clopidogrel with aspirin, patients receiving
clopidogrel had an annual 5.32% risk of ischemic stroke, myocardial infarction,
or vascular death compared with 5.83% for patients receiving aspirin.
Clopidogrel has been associated with a small occurrence of rash and diarrhea,
and gastrointestinal intolerance and hemorrhage were less frequent with
clopidogrel than with aspirin. Both aspirin and clopidogrel are associated with a
low occurrence of neutropenia. Aspirin, ticlopidine,dipyridamole, and
clopidogrel have earned a role in stroke prevention; the different adverse-effect
profiles of the drugs will influence the choice of agent
Keywords: aggregation/antiplatelet therapy/aspirin/ASPIRIN/cerebral
ischemia/cerebrovascular disease/cerebrovascular
disorders/clopidogrel/dipyridamole/DIPYRIDAMOLE/drugs/hemorrhage/ische
mic stroke/mechanism of action/myocardial infarction/platelet
aggregation/platelet aggregation inhibitors/prevention/RANDOMIZED
TRIAL/relative risk/risk/SECONDARY PREVENTION/STROKE/stroke
prevention/TICLOPIDINE/ticlopidine/toxicity/vascular
Hornberger, J. (1998), A cost-benefit analysis of a cardiovascular disease prevention
trial, using folate supplementation as an example. American Journal of Public
Health, 88 (1), 61-67.
Abstract: Objectives. This study illustrates a cost-benefit analysis of clinical trial design,
using as an example a trial of folate supplementation to prevent cardiovascular
disease. Methods. Bayesian statistical and decision-analytic techniques were
used to estimate the cost-benefit and sample size of a placebo- controled trial of
folate targeted to US citizens, aged 35 to 84 years, with elevated serum
homocysteine levels. The main end point is event-free survival (i.e., survival
without new ischemic heart disease or stroke) at 5 years. Results. Because the
screening cost and annual cost and inconvenience of taking folate is small
compared with the consequences of stroke, ischemic heart disease, or death, the
increase in 5-year event- free survival with folate that should compel the use of
folate is just 1.1%. The sample size per group needed to establish this level of
folate's medical effectiveness is estimated to be 17 310. Such a trial would
provide an expected societal cost- benefit savings exceeding $11 billion within
15 years. Conclusions. This study illustrates how Bayesian methods may help in
assessing the societal cost-benefit consequences of proposed disease prevention
trials, deciding which trials are worth sponsoring, and designing cost-effective
trials
Keywords: aged/ATHEROSCLEROSIS/cardiovascular
disease/CLINICAL-TRIALS/cost/cost-benefit
analysis/HEALTH/heart/HOMOCYSTEINE/HYPERHOMOCYSTEINEMIA/is
chemic heart disease/NEURAL-TUBE DEFECTS/prevention/RISK
FACTOR/serum/stroke/trials/VASCULAR-DISEASE
[Anon]. (1998), ASHP therapeutic position statement on antithrombotic therapy in
chronic atrial fibrillation. American Journal of Health-System Pharmacy, 55 (4),
376-381
Keywords: American Society of Health-System
Pharmacists/anticoagulants/ANTICOAGULATION/antithrombotic
therapy/ASPIRIN/aspirin/atrial fibrillation/BLEEDING
COMPLICATIONS/cerebrovascular
disorders/COST-EFFECTIVENESS/fibrillation/organizations/patient
education/pharmacists/platelet aggregation
inhibitors/PREVALENCE/PREVENTION/PROPHYLAXIS/protocols/RISK/ST
ROKE/therapy/warfarin/WARFARIN
Sheps, S.G. (1999), Overview of JNC VI: New directions in the management of
hypertension and cardiovascular risk. American Journal of Hypertension, 12 (8),
65S-72S.
Abstract: Treatment recommendations for hypertension as outlined in the Sixth Report
of the Joint National Committee on Prevention, Detection, Evaluation, and
Treatment of High Blood Pressure (JNC VI) are constantly evolving and being
refined as new information on the disease becomes evident. Uncontrolled
hypertension is a major antecedent of stroke, heart failure, coronary heart disease,
and end-stage renal disease. The increasing incidences of both cardiovascular
and renal diseases fuel the need for improved control of hypertension. In fact,
according to the National Health and Nutrition Examination Survey (NHANES),
about 69% of Americans whose blood pressure is greater than 140/90 mm Hg are
aware of it, about half are getting treatment for it, and only about one-quarter are
adequately controlled. These observations fuel the need for improved patient
management guidelines. JNC VI makes several changes from the previous JNC
V to assist physicians in the diagnosis, treatment, and improved management of
patients with hypertension. These changes include reporting adult blood pressure
in two new ways, via staging and risk factor classification. A high-normal
classification (systolic: 130 to 139 mm Hg, or diastolic: 85 to 89 mm Hg) is
included in JNC VI because of the clinical importance of such blood pressure
contributing to cardiovascular disease. Additionally, clinicians are advised to
assign a patient to one of three risk categories that, in addition to hypertension
stage, influence the decision to select antihypertensive drug therapy. Lifestyle
modification is an important component at each stage. These and other changes
and highlights of recent studies supporting the need for more intensive blood
pressure control are discussed in this paper. Am J Hypertens 1999; 12:65S-72S
(C) 1999 American Journal of Hypertension, Ltd
Keywords: antihypertensive therapy/AWARENESS/blood pressure/blood pressure
control/cardiovascular/cardiovascular disease/cardiovascular risk/cardiovascular
risk factors/control/control of hypertension/coronary heart
disease/diagnosis/diseases/drug therapy/end-stage renal
disease/guidelines/HEALTH/heart/heart failure/hypertension/incidences/JNC
V/lifestyle
modification/MINNESOTA/NEW-YORK/POPULATION/PREVALENCE/renal
/renal disease/risk/risk factor/STROKE/therapy/treatment/TRENDS
White, R.H., McBurnie, M.A., Manolio, T., Furberg, C.D., Gardin, J.M., Kittner, S.J.,
Bovill, E. and Knepper, L. (1999), Oral anticoagulation in patients with atrial
fibrillation: Adherence with guidelines in an elderly cohort. American Journal of
Medicine, 106 (2), 165-171.
Abstract: PURPOSE: To determine adherence with practice guidelines in a
population-based cohort of elderly persons aged 70 years or older with atrial
fibrillation. SUBJECTS AND METHODS: This was a cross-sectional analysis of
a subgroup of participants in the Cardiovascular Health Study, a prospective
observational study involving four communities in the United States. Subjects
were participants with atrial fibrillation on electrocardiogram at one or more
yearly examinations from 1993 to 1995. The outcome measure was self-reported
use of warfarin in 1995. RESULTS: In 1995, 172 (4.1%) participants had atrial
fibrillation together with information regarding warfarin use and no preexisting
indication for its use, Warfarin was used by 63 (37%) of these participants. Of
the 109 participants not reporting warfarin use, 92 (84%) had at least one of the
clinical risk factors (aside from age) associated with stroke in patients with atrial
fibrillation. Among participants not taking warfarin, 47% were taking aspirin.
Several characteristics were independently associated with warfarin use,
including age [odds ratio (OR) = 0.6 per 5-year increment, 95% CI 0.5-0.9], a
modified mini- mental examination score 70%) and mild neurologic deficits
(NIH stroke scale 50% of regional adults, broadly distributed
by site, gender, and age, Interventions: From 1974 to 1994, a community
program, integrated with primary medic;ll care and staffed by professional nurses,
provided education, screening, counseling, referral, tracking, and followup for
cardiovascular risk factors. Main Outcome Measures: Age-adjusted mortality
rates (total, heart, coronary, cerebrovascular, cancer) for three counties and
Maine, plus annual program encounters. Results: Relative to Maine, the Franklin
heart disease death rate was 0.97 at baseline (1960-1969; 95% confidence
interval, 0.91 to 1.03), 0.91 during the program (0.85 to 0.97), 0.83 during the 11
years of program growth (0.78 to 0.88), but 1.0 during the 10 years of decreasing
encounters. Franklin's total death rate was 1.01 at baseline, 0.95 during the
program (0.92 to 0.98), and 0.90 during program growth (0.86 to 0.94). Results
were similar for coronary disease, stroke, and cancer. Relative death rates did not
fall in either comparison county. Nurse- client encounters totaled 120,280 over
21 years. Relative to Maine, heart disease death rates correlated inversely with
program encounters (r = -0.53) but not with unemployment or physician supply.
Conclusions: Integrated with primary medical care, a comprehensive,
nurse-mediated community cardiovascular health program in rural Maine has
been associated with significant time-dependent and dose-dependent reductions
in cardiovascular and total mortality. (C) 2000 American Journal of Preventive
Medicine
Keywords: ACUTE
MYOCARDIAL-INFARCTION/adults/age/cancer/cardiovascular/cardiovascular
disease/cardiovascular diseases/cardiovascular risk/cardiovascular risk
factors/cerebrovascular/community/coronary disease/CORONARY
HEART-DISEASE/COST-EFFECTIVENESS/DEATH/disease/education/EDU
CATION-PROGRAM/evaluation/gender/health/heart/heart
disease/mortality/NEW-YORK/NORTH-KARELIA/nursing/PREVENTION/pri
mary/primary prevention/PROJECT/public health/residence
characteristics/risk/risk factors/RISK- FACTORS/screening/stroke/TRENDS
Li-Saw-Hee, F.L., Blann, A.D. and Lip, G.Y.H. (2000), Effect of degree of blood
pressure on the hypercoagulable slate in chronic atrial fibrillation. American
Journal of Cardiology, 86 (7), 795-+.
Abstract: Both chronic nonvalvular atrial fibrillation (AF) and hypertension are common
cardiovascular conditions that are independently associated with an increased
risk of stroke.(1,2) However, AF and hypertension often coexist, and such
patients have an additive risk of stroke and thromboembolism, thus representing
a "high-risk" population, In the multivariate analysis of pooled data from the 5
initial randomized controlled anticoagulation trials of nonvalvular AF, a history
of hypertension conferred a 1.6-fold increase in risk of stroke over those without
risk factors.(3) The contribution of hypertension was further confirmed by the
Stroke Prevention in Atrial Fibrillation Investigators(4) who found that patients
with AF with a history of hypertension (defined as a systolic blood pressure [BP]
> 160 mm Hg) had a higher rate of primary events (ischemic stroke and systemic
embolism; 3.6%/year) than those with no history of hypertension (1.1%/year; p 0.05). Furthermore, detailed analysis of 24-hour
ambulatory blood pressure data (available in 253 subjects) showed no association
between various blood pressure parameters (systolic and diastolic blood pressure,
out-of-bed and in-bed measurements) and LAA flow velocities (all p > 0.05). In
summary, the present study establishes the reference values for LAA flow
velocities in a large sample of the general population. LAA flow velocities
progressively decline with age in subjects with preserved left ventricular systolic
function. (C) 2000 by Excerpta Medica, Inc
Keywords: age/aged/ALTERED LOADING CONDITIONS/ANATOMY/blood
pressure/BLOOD-PRESSURE/diastolic blood
pressure/DISEASE/DOPPLER-ECHOCARDIOGRAPHY/echocardiography/hea
rt/history/hypertension/IMPACT/IN-VIVO/left atrial
appendage/men/NEW-YORK/population/population-based/RISK/sex/sinus
rhythm/STROKE/TRANSESOPHAGEAL ECHOCARDIOGRAPHY/women
Pearce, L.A., Hart, R.G. and Halperin, J.L. (2000), Assessment of three schemes for
stratifying stroke risk in patients with nonvalvular atrial fibrillation. American
Journal of Medicine, 109 (1), 45-51.
Abstract: PURPOSE: The risk of ischemic stroke varies widely among patients with
nonvalvular atrial fibrillation, influencing the choice of prophylactic
antithrombotic therapy. We assessed three schemes for stroke risk stratification
in these patients who were treated with aspirin and who did not have prior
cerebral ischemia. SUBJECTS AND METHODS: Criteria from three schemes of
risk stratification were applied to a longitudinally observed cohort of patients
with atrial fibrillation who did not have prior cerebral ischemia and who were
treated with aspirin alone or aspirin combined with low, ineffective doses of
warfarin in a multicenter clinical trial. The ability of the schemes to identify
patients at high (greater than or equal to 6%), low (less than or equal to 2%), and
intermediate annual risks of ischemic stroke was assessed. RESULTS: During a
mean follow-up of 1.8 years. 48 ischemic strokes occurred among 1,073 patients
with atrial fibrillation who were taking aspirin (rate = 2.5 per 100 person-years).
Each of the three schemes predicted stroke and disabling stroke, and successfully
identified patients at low risk (observed stroke rates of 0.3 to 1.1 per 100
person-years), although the fractions of the cohort that were categorized as low
risk varied from 14% to 45%. The observed rates of ischemic stroke among
patients categorized as high risk ranged from 3.5 to 7.2 per 100 person- years
among the stratification schemes. Two schemes considered all patients >75 years
old as high risk (observed stroke rate 4.2 per 100 person-years), while the
remaining scheme classified one third of patients in this age group as low risk
(observed stroke rate 0.6 per 100 person-years). CONCLUSIONS: When tested
in a large cohort of patients with atrial fibrillation who were treated with aspirin,
available risk- stratification schemes successfully identified patients with low
rates of ischemic stroke, but less consistently identified high-risk patients. Am J
Med. 2000;109:45-51. (C) 2000 by Excerpta Medica, Inc
Keywords: age/antithrombotic/ANTITHROMBOTIC THERAPY/ASPIRIN/atrial
fibrillation/cerebral/cerebral
ischemia/COMMUNITY/fibrillation/GENERAL-PRACTICE/high
risk/ischemia/ischemic/ischemic stroke/NEW-YORK/nonvalvular atrial
fibrillation/POPULATION/PREVALENCE/PREVENTION/PRIMARY-CARE/r
isk/risk stratification/stroke/therapy/THROMBOEMBOLISM/warfarin
De, B.K., Sen, S., Biswas, P.K., Sengupta, D., Biswas, J., Santra, A., Hazra, B. and
Maity, A.K. (2000), Propranolol in primary and secondary prophylaxis of
variceal bleeding among cirrhotics in India: A hemodynamic evaluation.
American Journal of Gastroenterology, 95 (8), 2023-2028.
Abstract: OBJECTIVE: In the present study, we attempted to complete the
hemodynamic assessment of propranolol response in cirrhotics with esophageal
varices at high risk of bleeding, in one sitting, so as to identify nonresponders at
the earliest. Some noninvasive indicators of this response were also evaluated.
METHODS: Hepatic venous pressure gradient (HVPG) was measured in 33 such
cases (18 nonbleeders, 15 bleeders) before and 90 min after an oral dose of 80
mg propranolol, and reduction by greater than or equal to 20% taken as
responder. RESULTS: Twenty-two patients (66.67%) responded (HVPG
reduction greater than or equal to 26%), whereas 11 (33.33%) did not (HVPG
reduction less than or equal to 6%). Postdrug HVPG between responders and
nonresponders showed a significant difference (p 0.1), baseline CI (p = 0.665), nor baseline stroke volume index (p >
0.1) could predict responder status. Difference of HVPG reduction (percent)
between bleeders (21.49 +/- 35.53) and nonbleeders (40.58 +/- 23.95)
approached, but did not reach, statistical significance (p = 0.076). However,
logistic regression showed this difference to be significant (p = 0.026). Age of
responders was found to be significantly lower than that of nonresponders (p
approximate to 0.05). During a follow-up of 9- 38 months, only one of 22
responders (on propranolol) had an episode of variceal bleed. None in whom
HVPG fell to less than or equal to 12 mm Hg bled. CONCLUSION: The study
suggests that single-sitting hemodynamic assessment of acute response to
high-dose oral propranolol clearly differentiates between responders and
nonresponders. Moreover, it appears that prior history of variceal bleeding and
old age negatively influences the effect of propranolol. (C) 2000 by Am. Cell. of
Gastroenterology
Keywords: acute/age/bleeding/CIRRHOSIS/evaluation/HEMORRHAGE/high
risk/history/NEW-YORK/PORTAL-
HYPERTENSION/PREVENTION/primary/prophylaxis/PROSPECTIVE
RANDOMIZED
TRIAL/risk/SCLEROTHERAPY/status/stroke/VENOUS-PRESSURE
Prystowsky, E.N. (2000), Management of atrial fibrillation: Therapeutic options and
clinical decisions. American Journal of Cardiology, 85 (10A), 3D-11D.
Abstract: Atrial fibrillation (AF) is the most common, sustained tachyarrhythmia seen in
clinical practice. Although it is not immediately life threatening, AF can cause
troublesome symptoms and poses a risk of stroke. The patient's clinical status is
often complicated by the presence of other cardiovascular or concomitant
diseases. As a result, management of the patient with AF involves many
questions and choices, all of which must be individualized. There ore 3 general
strategies for the management of patients with AF, including (1) restoration and
maintenance of sinus rhythm, (2) control of ventricular rate, and (3) prevention
of stroke. More than 1 strategy may be appropriate in some patients, Furthermore,
either pharmacologic or nonpharmacologic options can be chosen in certain
situations. Although some data from randomized clinical trials are available to
aid in clinical decision-making, only the benefits of anticoagulation are
supported by substantial evidence. This article explores practical approaches to
several management issues and scenarios for which there ore limited relevant
clinical date. These include: (1) patient selection for ventricular rate control and
assessment of treatment, (2) choice of antiarrhythmic drug for maintenance of
sinus rhythm, (3) inpatient versus outpatient initiation of therapy, (4) definition
of antiarrhythmic drug success, (5) methods of transthoracic direct cardioversion,
and (6) prediction and prevention of AF after cardiac surgery. (C) 2000 by
Excerpta Medica, Inc
Keywords: AF/AMIODARONE/anticoagulation/atrial fibrillation/cardiac/cardiac
surgery/CARDIAC-SURGERY/cardiovascular/CARDIOVERSION/clinical
practice/clinical trials/CONGESTIVE-HEART-FAILURE/control/decision
making/decision-making/diseases/EFFICACY/fibrillation/HUMANS/IBUTILID
E/LEFT-VENTRICULAR
DYSFUNCTION/NEW-YORK/prevention/RADIOFREQUENCY
ABLATION/randomized/risk/sinus
rhythm/status/stroke/surgery/therapy/treatment/TRIAL/trials
Fraisse, F., Holzapfel, L., Coulaud, J.M., Simmoneau, G., Bedock, B., Feissel, M.,
Herbecq, P., Pordes, R., Poussel, J.F. and Roux, L. (2000), Nadroparin in the
prevention of deep vein thrombosis in acute decompensated COPD. American
Journal of Respiratory and Critical Care Medicine, 161 (4), 1109-1114.
Abstract: Low molecular weight heparins are as effective as unfractionated heparin in
deep-vein thrombosis (DVT) prophylaxis for major surgery. However, there is
no evidence nor consensus for prophylaxis in medical patients. We compared the
efficacy and safety of nadroparin calcium (nadroparin) with placebo in medical
patients at high risk of DVT. A total of 223 patients mechanically ventilated for
acute, decompensated chronic obstructive pulmonary disease, were randomized
to treatment with subcutaneous nadroparin adjusted for body weight (0.4 ml, i.e.,
3,800 AXa IU, or 0.6 ml, i.e., 5,700 AXa IU) or placebo. The average duration of
treatment was 11 d. The incidence of DVT in patients receiving nadroparin was
significantly lower than that in patients receiving placebo (15.5 versus 28.2%; p
= 0.045). Although the incidence of adverse events was high in both groups,
there were no significant differences between nadroparin and placebo for total
adverse events (46.3 versus 39.8%; p = 0.33), serious adverse events (25.0 versus
19.5%; p = 0.32), or those resulting in early permanent discontinuation of
treatment (12.0 versus 8.8%; p = 0.44). The most common adverse event was
hemorrhage. There was the same number of deaths in both treatment groups.
Subcutaneous nadroparin resulted in 45% decrease in incidence of DVT
compared with placebo
Keywords: acute/ACUTE ISCHEMIC STROKE/adverse
events/calcium/CARE/consensus/deep vein thrombosis/deep-vein
thrombosis/disease/DOUBLE-BLIND/DVT/ENOXAPARIN/hemorrhage/hepari
n/heparins/high risk/HIP-
REPLACEMENT/incidence/INPATIENTS/LUNG/medical
patients/MOLECULAR-WEIGHT
HEPARIN/NEW-YORK/prevention/prophylaxis/randomized/RISK/safety/surger
y/thrombosis/treatment/TRIAL/UNFRACTIONATED HEPARIN/VENOUS
THROMBOEMBOLISM
Johnson, L.N., Stetson, S.W., Krohel, G.B., Cipollo, C.L. and Madsen, R.W. (2000),
Aspirin use and the prevention of acute ischemic cranial nerve palsy. American
Journal of Ophthalmology, 129 (3), 367-371.
Abstract: PURPOSE: To assess the relationship of aspirin use and ischemic cranial
nerve palsies among patients with diabetes mellitus and hypertension,
METHODS: This retrospective case-control study involved 100 patients with
ischemic cranial nerve palsies in association with diabetes, hypertension, or both
(palsy cases) and 163 age-matched and sex-matched patients with diabetes,
hypertension, or both but without ischemic cranial nerve palsies (nonpalsy
control subjects). Comparisons were made with respect to duration of diabetes,
dose and duration of aspirin use, dose and duration of tobacco use, and presence
of cardiac or cerebrovascular disease. RESULTS: There were 20 oculomotor, 33
trochlear, 37 abducens, and 10 facial nerve palsy cases. The median duration of
diabetes was 6 years for cases and 7 years for control subjects. There were 34
cases (34%) who had used aspirin for a mean duration of 5.5 years before the
onset of the cranial nerve palsy and 49 control subjects (30.1%) who had used
aspirin for a mean duration of 4.3 years. There were no significant differences
between cases and control subjects for duration of diabetes (P = .94); aspirin use
(P = .51), duration (P = .50), and dosage (P = .89); tobacco use (P = .73) and
consumption (P = .45); and proportion of cardiac disease (P = .17).
Cerebrovascular disease was significantly less common among palsy cases than
nonpalsy control subjects (P 40.6 degrees C) in the presence of altered mental status and anhidrosis) and
tried to explore the possible cause of this unusual phenomenon. Through a
emergency department (ED) chart review, case retraction from International
Classification of Diseases (ICD) code, and ED conferences, six patients were
found for the period from June to August (the hottest months in Taiwan) 1998.
We found that the most common comorbid conditions were hypertension (4/6)
and preexisting mental problems (3/6). All patients lived in the inner part of an
urban area, were middle class, and were not socially isolated. Most of our
patients felt unhealthy being exposed to the cold and avoided staying in
air-conditioned rooms. Laboratory abnormalities and clinical presentations,
except for a high fever and conscious change, seemed to be nonspecific. All
cases occurred during two periods of sustained hotter-than average weather and,
to our surprise, we found that three episodes occurred around the day of the
highest weather temperature (38.1 degrees C). However, the higher temperatures
(around 30 degrees to 31 degrees C and 32 degrees to 33 degrees C) did not
reach the criteria of a heat wave. Compared with the other study, our patients
seemed to have initial worse outcomes. Because of special environment and
social factors, classic heat stroke may occur occasion ally in subtropic regions,
without previous history of heat waves and where heat stroke rarely occurs,
during periods of the persistently high temperatures. Prevention of heat stroke in
an area with a low incidence includes early health organizations' issue of
advisories or warnings through the media and reminding at teaching emergency
physicians about heat stroke during sustained hot weather, especially when
record temperatures are set
Keywords: CHICAGO/classic heat stroke/disease/health/heat/heat stroke/heat
wave/HEATSTROKE/history/hypertension/hyperthermia/incidence/organization
s/review/status/stroke/subtropics/urban/WAVE
Rimmer, J.H., Braunschweig, C., Silverman, K., Riley, B., Creviston, T. and Nicola, T.
(2000), Effects of a short-term health promotion intervention for a predominantly
African-American group of stroke survivors. American Journal of Preventive
Medicine, 18 (4), 332-338.
Abstract: The study examined the effects of a 12-week health promotion intervention for
a predominantly urban African-American population of stroke survivors. Design:
A pre-test/post-test lag control group design was employed. Participants/Setting:
Participants were 35 stroke survivors (9 male, 26 female) recruited fi om local
area hospitals and clinics. Main Outcome Measures: Biomedical, fitness,
nutritional, and psychosocial measures were employed to assess program
outcomes. Results: Treatment group made significant gains over lag controls in
the following areas: (1) reduced total cholesterol, (2) reduced weight, (3)
increased cardiovascular fitness, (4) increased strength, (5) increased flexibility,
(6) increased life satisfaction and ability to manege self-care needs, and (7)
decreased social isolation. Conclusions: A short-term health pr-emotion
intervention for predominantly African-American stroke survivors was effective
in improving several physiological and psychological health outcomes
Keywords: cardiovascular/CARE/cerebrovascular
accident/cholesterol/control/design/disabled
persons/exercise/EXERCISE/health/health behavior/health
promotion/hospitals/minorities/NEW-YORK/nutrition/PEOPLE/physical
fitness/PHYSICAL-DISABILITIES/population/PREVENTION/RISK/SERVICE
/stroke/urban/WOMEN
Mcgill, H.C., McMahan, C.A., Herderick, E.E., Malcom, G.T., Tracy, R.E. and Strong,
J.P. (2000), Origin of atherosclerosis in childhood and adolescence. American
Journal of Clinical Nutrition, 72 (5), 1307S-1315S.
Abstract: Atherosclerosis begins in childhood as deposits of cholesterol and its esters,
referred to as fatty streaks, in the intima of large muscular arteries. In some
persons and at certain arterial sites, more lipid accumulates and is covered by a
fibromuscular cap to form a fibrous plaque. Further changes in fibrous plaques
render them vulnerable to rupture, an event that precipitates occlusive thrombosis
and clinically manifest disease (sudden cardiac death, myocardial infarction,
stroke, or peripheral arterial disease). In adults, elevated non-HDL- cholesterol
concentrations, low HDL-cholesterol concentrations, hypertension, smoking,
diabetes, and obesity are associated with advanced atherosclerotic lesions and
increased risk of clinically manifest atherosclerotic disease. Control of these risk
factors is the major strategy for preventing atherosclerotic disease. To determine
whether these risk factors also are associated with early atherosclerosis in young
persons, we examined arteries and tissue from approximate to 3000 autopsied
persons aged 15-34 y who died of accidental injury, homicide, or suicide. The
extent of both fatty streaks and raised lesions (fibrous plaques and other
advanced lesions) in the right coronary artery and in the abdominal aorta was
associated positively with non-HDL-cholesterol concentration, hypertension,
impaired glucose tolerance, and obesity and associated negatively with
HDL-cholesterol concentration. Atherosclerosis of the abdominal aorta also was
associated positively with smoking. These observations indicate that long- range
prevention of atherosclerosis and its sequelae by control of the risk factors for
adult coronary artery disease should begin in adolescence and young adulthood
Keywords:
adolescents/adults/aged/aorta/arteries/atherosclerosis/cholesterol/COMMUNITY
- PATHOLOGY/control/coronary arteries/coronary artery disease/CORONARY
HEART-DISEASE/diabetes/fatty streaks/FATTY STREAKS/glucose/HDL
cholesterol/hypertension/infarction/LOW-DENSITY-LIPOPROTEIN/MACROP
HAGE FOAM CELLS/myocardial/myocardial
infarction/NUTRITION/obesity/peripheral arterial
disease/plaque/POSTMORTEM RENAL INDEX/prevention/risk/risk
factors/RISK-FACTORS/smoking/STATISTICAL-ANALYSIS/stroke/thrombos
is/WHITE MALES/young adults/YOUNG BLACK
Boden, W.E. (2000), High-density lipoprotein cholesterol as an independent risk factor
in cardiovascular disease: Assessing the data from Framingham to the Veterans
Affairs high-density lipoprotein intervention trial. American Journal of
Cardiology, 86 (12A), 19L-22L.
Abstract: The Framingham Heart Study found that high-density lipoprotein cholesterol
(HDL-C) was the most potent lipid predictor of coronary artery disease risk in
men and women >49 years of age. The Air Force/Texas Coronary
Atherosclerosis Prevention Study (AFCAPS/Tex-CAPS), in which subjects were
randomized to treatment with lovastatin or placebo, also reported a striking
benefit of treatment, particularly in patients with HDL-C less than or equal to 35
mg/dL at baseline. Treatment with lovastatin was associated with a remarkable
45% reduction in events for this group. The Veterans Affairs HDL Intervention
Trial (VA-HIT) randomized subjects to gemfibrozil or placebo. A high
proportion of enrolled subjects with low HDL-C also had characteristics of the
dysmetabolic syndrome. HDL-C likewise increased by 6% on treatment, total
cholesterol was reduced by 4% and triglycerides by 31%. There was no change
in low-density lipoprotein cholesterol (LDL-C) levels. These changes in lipid
were associated with a cumulative 22% reduction in the trial primary endpoint of
all-cause mortality and nonfatal myocardial infarction (MI). Additionally,
significant reductions in secondary endpoints including death from coronary
artery disease, nonfatal MI, stroke, transient ischemic attack, and carotid
endarterectomy were associated with the increase in HDL-C. In VA-HIT, for
every 1% increase in HDL-C, there was a 3% reduction in death or MI, a
therapeutic benefit that eclipses the benefit associated with LDL-C reduction. (C)
2000 by Excerpta Medica, Inc
Keywords: age/all-cause mortality/ARTERY DISEASE/cardiovascular/cardiovascular
disease/carotid/carotid endarterectomy/cholesterol/coronary artery
disease/CORONARY HEART-DISEASE/CT/death/disease/disease
risk/endarterectomy/gemfibrozil/HDL/high density lipoprotein/high-density
lipoprotein cholesterol/infarction/ischemic/low density lipoprotein/low-density
lipoprotein cholesterol/MEN/mortality/myocardial/myocardial
infarction/NEW-YORK/PREVENTION/primary/randomized/risk/risk
factor/secondary/stroke/transient/transient ischemic
attack/treatment/trial/triglycerides/women
Waters, D.D. (2001), What do the statin trials tell us? American Journal of Managed
Care, 7 (5), S138-S143.
Abstract: The results of 5 major placebo-controlled trials evaluating the effects of statins
in approximately 31,000 individuals with and without known coronary
disease,have demonstrated the following: statins reduce the incidence of
coronary events, the reduction in relative risk for coronary events increases with
the duration of therapy, the reduction in coronary events is proportional to the
reduction in low-density lipoprotein cholesterol (LDL-C) levels, and lower
LDL-C levels are associated with lower event rates. The studies have also shown
that statins are safe and effective in reducing the incidence of coronary events in
women, individuals with diabetes, and patients older than 65 years of age and in
reducing the risk of stroke and transient ischemic attacks in patients with
coronary disease. Finally studies indicate that statins ameliorate a variety of
pathophysiologic processes that are associated with increased risk for
atherosclerosis
Keywords: 4S/age/atherosclerosis/CARE/cholesterol/coronary disease/CORONARY
HEART-DISEASE/diabetes/disease/EVENTS/HYPERCHOLESTEROLEMIA/i
ncidence/ischemic/low density lipoprotein/low-density lipoprotein
cholesterol/MEN/PREVENTION/relative risk/RISK/SCANDINAVIAN
SIMVASTATIN SURVIVAL/statin/statins/stroke/therapy/transient/transient
ischemic attacks/trials/WOMEN
Tanne, D., Benderly, M., Goldbourt, U., Boyko, V., Brunner, D., Graff, E.,
Reicher-Reiss, H., Shotan, A., Mandelzweig, L. and Behar, S. (2001), A
prospective study of plasma fibrinogen levels and the risk of stroke among
participants in the Bezafibrate Infarction Prevention Study. American Journal of
Medicine, 111 (6), 457-463.
Abstract: PURPOSE: Plasma fibrinogen has emerged as an important predictor of
cardiovascular disease, but few data are available on its association with stroke.
We sought to determine if plasma fibrinogen is a marker of increased risk or a
direct causative risk factor for stroke. SUBJECTS AND METHODS: Patients
from the Bezafibrate Infarction Prevention Study, a placebo-controlled,
randomized clinical trial of secondary prevention of coronary heart disease by
lipid modification with bezafibrate retard (400 mg daily), were studied. Plasma
fibrinogen levels were measured at baseline and yearly thereafter. Stroke, a
prospectively monitored endpoint, was systematically assessed regarding stroke
type, subtype, and functional outcome. RESULTS: Mean baseline fibrinogen
levels were significantly higher in patients subsequently having a
cerebrovascular event (140 strokes, 36 transient ischemic attacks; mean
follow-up, 6.2 years) than in patients who did not (375 vs. 349 mg/dL, P
373 mg/dL, P 65 years (5.90, p = 0.0001),
moderate to severe hypertension (6.8, p = 0.0017), weight gain of >2 kg between
dialyses as a marker of poor patient compliance (6.47, p = 0.0433), and
antithrombotic therapy with salicylates or warfarin (8.33, p = 0.0002), as
compared with corresponding groups without these risk factors. Our data suggest
that in contrast to other risk factors nonrheumatic atrial fibrillation in itself is not
associated with an increased risk of stroke in patients on maintenance
hemodialysis treatment. Copyright (C) 2001 S. Karger AG, Basel
Keywords: age/anticoagulation/ANTICOAGULATION/antithrombotic/antithrombotic
therapy/arrhythmia/atrial fibrillation/Austria/chronic atrial
fibrillation/EVENTS/fibrillation/GENERATION/hemodialysis/HEMOSTASIS/h
igh risk/hypertension/incidence/nonrheumatic/patient
compliance/PLATELET-AGGREGATION/PREVALENCE/PREVENTION/RE
NAL-DISEASE/risk/risk factors/risk factors of stroke/stroke/stroke
incidence/therapy/treatment/uremia/WARFARIN/weight
Ikai, T., Uematsu, M., Eun, S.S., Kimura, C., Hasegawa, C. and Miyano, S. (2001),
Prevention of secondary osteoporosis postmenopause in hemiplegia. American
Journal of Physical Medicine & Rehabilitation, 80 (3), 169-174.
Abstract: Objectives: To study secondary osteoporosis postmenopause in women with
hemiplegia and to show the therapeutic effects of etidronate and how
osteoporotic conditions relate to the activities of daily living (ADL). Design:
Eighty-one postmenopausal women with hemiplegia were admitted within 6 mo
of their first cerebrovascular accident. The bone mineral density (BMD) and
biochemical markers of bone turnover were measured at the time of admission.
Forty women (treatment group) received a 2-wk administration of etidronate.
Forty-one women (control group) were not administered etidronate. Results:
After completing a 3-mo rehabilitation program, BMD levels were remeasured.
ADL was evaluated by FIM(TM). The low ADL group had a larger decrease in
BMD than the high ADL group. For the control group, the BMD rate of change
on the paretic side of the femoral neck was -9.6%/3 mo for the low ADL group.
BMD loss was reduced significantly by the administration of etidronate for the
low ADL group. Conclusions: Results indicate that ADL corresponds to the
progression of osteoporosis in postmenopausal women with hemiplegia and that
increasing the level of ADL will reduce the progression of osteoporosis. Use of
etidronate has also been proven to have a suppressive effect on the BMD
decrease in women
Keywords: activities of daily
living/ADL/administration/BISPHOSPHONATES/BONE-MINERAL
DENSITY/cerebrovascular/cerebrovascular
accident/COLLAGEN/control/etidronate/hemiplegia/hemiplegic
women/IMMOBILIZATION/Japan/markers/MASS/osteoporosis/postmenopausa
l women/RADIOIMMUNOASSAY/rehabilitation/secondary/secondary
osteoporosis/STROKE/treatment/women
Aikimbaev, K., Guvenc, B., Canataroglu, A., Canataroglu, H., Baslamisli, F. and Oguz,
M. (2001), Value of duplex and color Doppler ultrasonography in the evaluation
of orbital vascular flow and resistance in sickle cell disease. American Journal of
Hematology, 67 (3), 163-167.
Abstract: The aim of the present study was to assess and to compare the orbital and
retinal vascular flow dynamics and resistance in patients with homozygous sickle
cell disease with controls by means of duplex and color Doppler ultrasonography.
Forty-six patients with homozygous sickle cell disease (SCD) and 20 healthy
subjects were included in the study. None of the patients had objective signs of
ocular involvement. Duplex and color Doppler ultrasonography of the
ophthalmic, short posterior ciliary, and central retinal arterial flows of the both
eyes were performed to assess peak systolic flow velocity (PSFV), end-diastolic
flow velocity (EDFV), and mean flow velocity (MFV) through entire cardiac
cycle with further calculation of resistive indices (RI) and pulsatility indices (PI).
Ophthalmic arterial flow velocities were significantly increased in patients with
SCD than in controls (P 0.03) in patients with SCD
compared to controls. Reduction of retinal vascular flow velocities and increase
of retinal vascular resistance were significantly related to the mean hemoglobin
and hematocrit levels, red blood cell count, and mean corpuscular hemoglobin
volume (P 4-mm thick, ulcerated plaques, or mobile
debris), adjusting for age and gender (p 0.2). Thus, coronary artery disease is strongly associated
with aortic atherosclerosis and complex atherosclerosis in the general population.
Cerebrovascular disease is weakly associated with aortic atherosclerosis, thereby
questioning the overall importance of aortic atherosclerosis in the pathogenesis
of cerebrovascular events in the general population. (C) 2002 by Excerpta
Medica, Inc
Keywords: age/aged/angina/angina
pectoris/aorta/ARCH/ATHEROMAS/atherosclerosis/ATRIAL-FIBRILLATION
/bypass/bypass surgery/cerebrovascular/cerebrovascular disease/coronary artery
bypass/coronary artery disease/disease/echocardiography/gender/HIGH
BLOOD-PRESSURE/hypertension/hypertension
treatment/infarction/ischemic/ISCHEMIC STROKE/myocardial/myocardial
infarction/NEW-YORK/pathogenesis/PLAQUE/population/PREVALENCE/puls
e pressure/RISK-
FACTORS/severity/smoking/stroke/surgery/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/transient/transient ischemic
attack/treatment/VASCULAR EVENTS
Kong, D.F., Hasselblad, V., Kandzari, D.E., Newby, L.K. and Califf, R.M. (2002),
Seeking the optimal aspirin dose in acute coronary syndromes. American Journal
of Cardiology, 90 (6), 622-+.
Abstract: We reexamined the Antiplatelet Trialists' Collaboration data (11 studies) to
evaluate optimal dosing of aspirin for secondary prevention after acute coronary
syndromes, while adjusting for patient population and temporal trends. Although
aspirin reduced the risks of mortality (odds ratio, 0.82; 95% confidence interval,
0.71 to 0.96), death or myocardial infarction, and death, infarction, or stroke,
unadjusted analysis suggested greater benefit in unstable angina versus
myocardial infarction and with higher versus lower aspirin doses, highlighting
the need for larger, randomized comparisons of aspirin dosing in these patients
Keywords: acute/acute coronary
syndromes/ANGINA/aspirin/death/infarction/mortality/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/NEW-YORK/population/prevention/
randomized/secondary/secondary prevention/stroke/trends/TRIAL/unstable
angina
Disler, P., Hansford, A., Skelton, J., Wright, P., Kerr, J., O'Reilly, J., Hepworth, J.,
Middleton, S. and Sullivan, C. (2002), Diagnosis and treatment of obstructive
sleep apnea in a stroke rehabilitation unit - A feasibility study. American Journal
of Physical Medicine & Rehabilitation, 81 (8), 622-625.
Abstract: Obstructive sleep apnea can be diagnosed in approximately 60% of stroke
survivors in the postacute period and has been found to be associated with
increased mortality and a worse functional outcome at 3 and 12 mo after
discharge. In this study, 38 patients undergoing rehabilitation after stroke
underwent sleep studies by using the AutoSet Portable II Plus device; obstructive
sleep apnea was found in 18 of the patients, and five consecutively diagnosed
patients were treated on the ward with nasal continuous positive airway pressure.
The research has shown that it is feasible to routinely implement a diagnostic and
therapeutic approach to sleep apnea on the rehabilitation ward, which is hoped to
have a positive influence on mortality, functional outcome, and secondary
prevention
Keywords: Australia/AUTOSET/BRAIN INFARCTION/continuous positive airway
pressure/diagnostic/DISEASE/hemiplegia/mortality/outcome/POLYSOMNOGR
APHY/prevention/rehabilitation/research/RISK FACTOR/secondary/secondary
prevention/sleep/sleep apnea/stroke/treatment
Stewart, S., Hart, C.L., Hole, D.J. and McMurray, J.J.V. (2002), A population-based
study of the long-term risks associated with atrial fibrillation: 20-year follow-up
of the Renfrew/Paisley study. American Journal of Medicine, 113 (5), 359-364.
Abstract: PURPOSE: To describe the effect of atrial fibrillation on long- term morbidity
and mortality. SUBJECTS AND METHODS: The Renfrew/Paisley Study
surveyed 7052 men and 8354 women aged 45- 64 years between 1972 and 1976.
All hospitalizations and deaths occurring during the subsequent 20 years were
analyzed by the presence or absence of atrial fibrillation at baseline. Lone atrial
fibrillation was defined in the absence of other cardiovascular signs or symptoms.
Cox proportional hazards models were used to adjust for age and cardiovascular
conditions. RESULTS: After 20 years, 42 (89%) of the 47 women with atrial
fibrillation had a cardiovascular event (death or hospitalization), compared with
2276 (27%) of the 8307 women without this arrhythmia. Among men, 35 (66%)
of 53 with atrial fibrillation had an event, compared with 3151 (45%) of 6999
without atrial fibrillation. In women, atrial fibrillation was an independent
predictor of cardiovascular events (rate ratio [RR] = 3.0; 95% confidence interval
[CI]: 2.1-4.2), fatal or nonfatal strokes (RR = 3.2; 95% CI: 1.0-5.0), and heart
failure (RR = 3.4; 95% CI: 1.9-6.2). The rate ratios among men were 1.8 (95%
CI: 1.3-2.5) for cardiovascular events, 2.5 (95% CI: 1.3- 4.8) for strokes, and 3.4
(95% CI: 1.7-6.8) for heart failure. Atrial fibrillation was an independent
predictor of all-cause mortality in women (RR = 2.2; 95% CI: 1.5-3.2) and men
(RR = 1.5; 95% CI: 1.2-2.2). However, lone atrial fibrillation (which occurred in
15 subjects) was not associated with a statistically significant increase in, either
cardiovascular events (RR = 1.5; 95% CI: 0.6-3.6) or mortality (RR = 1.8; 95%
CI: 0.9-3.8). CONCLUSION: Atrial fibrillation is associated with an increased
long-term risk of stroke, heart failure, and all-cause mortality, especially in
women. (C) 2002 by Excerpta Medica, Inc
Keywords: age/aged/all-cause mortality/arrhythmia/atrial
fibrillation/CARDIOMYOPATHY/cardiovascular/cardiovascular
event/cardiovascular events/death/DISEASE/fibrillation/heart/heart
failure/HEART-FAILURE/hospitalization/men/morbidity/MORTALITY/NATU
RAL-HISTORY/NEW-YORK/population-based/PREVALENCE/PREVENTIO
N/PROGNOSIS/risk/SCOTLAND/STROKE/symptoms/women
Yusuf, S. (2002), From the Hope to the Ontarget and the Transcend Studies: Challenges
in Improving Prognosis. American Journal of Cardiology, 89 (2A), 18A-25A.
Abstract: The Heart Outcomes Prevention Evaluation (HOPE) study conclusively
demonstrated that ramipril, an angiotensin- converting enzyme (ACE) inhibitor,
reduces the risk of cardiovascular death, myocardial infarction (MI), and death in
patients at risk for cardiovascular events but without heart failure. The Study to
Evaluate Carotid Ultrasound Changes in Patients Treated with Ramipril and
Vitamin E (SECURE) substudy demonstrated that ramipril also reduced
atherosclerosis. These results suggest that the renin-angiotensin system (RAS)
has a more important role in the development and progression of atherosclerosis
than previously believed, and they indicate the need for further clinical studies to
define the range of benefits available from modifying the RAS. Achieving
maximum benefit may require treatment with both an ACE inhibitor and an
angiotensin II type-1 receptor blocker (ARB). The Randomized Evaluation of
Strategies for Left Ventricular Dysfunction (RESOLVD) study indicated that
combining an ACE inhibitor with an ARB decreased blood pressure and
improved the ejection fraction more than treatment with either drug alone in
patients with congestive heart failure. The Valsartan in Heart Failure Trial
(Val-HeFT) showed that the combination of an ACE inhibitor and an ARB
reduced hospitalization for heart failure in patients with congestive heart failure
by 27.5%, although no decrease in all-cause mortality was observed. The
Ongoing Telmisartan Alone and in Combination with Ramipril Global Endpoint
Trial (ONTARGET) is a large, long-term study (23,400 patients, 5.5 years). It
will compare the benefits of ACE inhibitor treatment, All treatment, and
treatment with an ACE inhibitor and All together, in a study population with
established coronary artery disease, stroke, peripheral vascular disease, or
diabetes with end-organ damage. Patients with congestive heart failure will be
excluded. In a parallel study, patients unable to tolerate an ACE inhibitor will be
randomized to receive telmisartan or placebo (the Telmisartan Randomized
Assessment Study in ACE-I Intolerant Patients with Cardiovascular Disease
[TRANSCEND]). The primary endpoint for both trials is a composite of
cardiovascular death, MI, stroke, and hospitalization for heart failure. Secondary
endpoints will investigate reductions in the development of diabetes mellitus,
nephropathy, dementia, and atrial fibrillation. These 2 trials are expected to
provide new insights into the optimal treatment of patients at high risk of
complications from atherosclerosis. (C) 2002 by Excerpta Medica, Inc
Keywords: ACE inhibitor/all-cause mortality/angiotensin/angiotensin
II/atherosclerosis/atrial/atrial fibrillation/benefits/blocker/blood
pressure/cardiovascular/cardiovascular events/clinical
studies/combination/complications/congestive heart failure/coronary artery
disease/death/dementia/development/diabetes/diabetes
mellitus/disease/drug/fibrillation/heart/heart failure/high
risk/hospitalization/infarction/mortality/myocardial/myocardial
infarction/nephropathy/NEW-YORK/peripheral vascular
disease/population/primary/progression/ramipril/randomized/renin angiotensin
system/renin-angiotensin system/risk/stroke/treatment/trials/vascular/vascular
disease
Morse, J.M. (2002), Enhancing the safety of hospitalization by reducing patient falls.
American Journal of Infection Control , 30 (6), 376-380.
Abstract: The iatrogenic nature of hospitalization places patients at risk of falling, injury
and death. In this article, the major principles of providing protective and
preventive interventions are outlined. The principles are the establishment of a
multifaceted fall prevention program that targets fall interventions according to
each etiologic factor; the recognition that fall protective and prevention
interventions are distinct and serve a different function; the use of the fall
monitoring system comprehensively; the creation of a clinical nurse specialist
position, responsible for fall intervention; and a conscious and individualized
approach to fall prevention. The process and problems of the varying nature of
providing fall protection and fall prevention are discussed: for example, use of a
side rail as a protective strategy may be successful with one patient but
considered a hazard when used with a different patient
Keywords: death/hospitalization/monitoring/OLDER
ADULTS/prevention/PRONE/protection/RISK/safety/STRENGTH/STROKE
REHABILITATION/use
Ruilope, L.M., Coca, A., Volpe, M. and Waeber, B. (2002), ACE inhibition and
cardiovascular mortality and morbidity in essential hypertension: The end of the
search or a need for further investigations? American Journal of Hypertension,
15 (4), 367-371.
Abstract: Scientific evidence currently available supports the concept that
renin-angiotensin blockade with angiotensin converting enzyme inhibitors as a
first-line treatment exhibits in arterial hypertension beneficial effects in the
prevention of mortality and morbidity comparable to those achieved with
diuretics and beta-blockers. In addition, the renin-angiotensin blockade has also
proved to be beneficial in the secondary prevention of several complications of
hypertensive disease such as after myocardial infarction and congestive heart
failure, as well as in the prevention of the incidence of type 2 diabetes, and the
progression of diabetic and nondiabetic nephropathy. In this later regard, recent
evidence with angiotensin II receptor antagonists in reducing the progression of
nephropathy in type 2 diabetes strongly confirms that antagonism of the
renin-angiotensin system is an effective approach to cardiovascular and renal
disease. Finally, the renin-angiotensin blockade in high-risk patients may reduce
cardiovascular mortality independently of the effect on blood pressure (BP). The
effect of other antihypertensive drugs on cardiovascular risk in patients with
high-normal BP should be investigated to establish whether they exhibit a
comparable effect or whether there is a class-related benefit of drugs blocking
the renin-angiotensin system. Such a strategy could also be encouraged to design
future interventional studies with the newer classes of compounds (angiotensin II
AT(1)-receptor antagonists, vasopeptidase inhibitors. endothelin antagonists),
which would have the additional potential advantage of providing information
more easily transferable to large-scale clinical practice. (C) 2002 American
Journal of Hypertension, Ltd
Keywords: ACE inhibition/angiotensin/angiotensin converting enzyme
inhibitors/angiotensin II/antihypertensive drugs/antihypertensive
therapy/arterial/arterial hypertension/beta-blockers/blood
pressure/BLOOD-PRESSURE/cardiovascular/cardiovascular
mortality/cardiovascular risk/clinical practice/complications/congestive heart
failure/CONVERTING-ENZYME-INHIBITION/design/diabetes/disease/diureti
cs/drugs/essential/heart/heart failure/high
risk/hypertension/incidence/infarction/LEFT-VENTRICULAR
HYPERTROPHY/METAANALYSIS/morbidity/mortality/myocardial/myocardi
al
infarction/MYOCARDIAL-INFARCTION/nephropathy/NEW-YORK/preventio
n/prevention of mortality/RANDOMIZED DOUBLE-BLIND/RATS/renal/renal
disease/renin angiotensin system/renin-angiotensin
system/risk/secondary/secondary
prevention/Spain/STROKE/SURVIVAL/treatment/TRIAL/trials/type 2 diabetes
Sumoza, A., de Bisotti, R., Sumoza, D. and Fairbanks, V. (2002), Hydroxyurea (HU) for
prevention of recurrent stroke in sickle cell anemia (SCA). American Journal of
Hematology, 71 (3), 161-165.
Abstract: Cerebrovascular accident (CVA) is a major cause of morbidity and death in
sickle cell anemia (SCA). Transfusion of packed erythrocytes is widely used to
prevent this complication. However, chronic transfusion may lead to iron
overload, alloimmunization, or infections. Cost and compliance may compromise
transfusion therapy. A possible alternative, the prophylactic use of hydroxyurea
(HU), has not been tried to determine whether it may prevent recurrent stroke.
We used HU in five children with SCA who had suffered stroke, in three of them
after a first episode and in the other two after a second CVA. Four had infarctive
stroke and one a transient ischemic attack (TIA). Four patients took HU at a dose
of 40 mg/kg/d, one patient at 30 mg/kg/d. None of the patients had recurrent
stroke during 42-112 months of observation. None experienced pain crises. In all,
HbF increased significantly. and was maintained above 14.7% during treatment.
The total Hb concentration increased 19.5 g/L (median) above the value before
treatment. HU was well tolerated. None of the five children had leukopenia or
thrombocytopenia during therapy. HU appears to prevent recurrence of stroke in
SCA without risk of major toxicity. (C) 2002 Wiley-Liss, Inc
Keywords: alloimmunization/anemia/cerebrovascular accident
(CVA)/CHILDREN/CVA/death/DISEASE/FETAL
HEMOGLOBIN/hemoglobin S (Hb S)/hydroxyurea (HU)/iron
overload/ischemic/morbidity/MORTALITY/NEW-YORK/pain/prevention/recur
rence/recurrent stroke/risk/RISK-FACTORS/sickle cell anemia/sickle cell
anemia/disease/stroke/THERAPY/TIA/toxicity/transfusion/TRANSFUSIONS/tr
ansient/transient ischemic attack/transient ischemic attack (TIA)/treatment/use
Matchar, D.B., Samsa, G.P., Cohen, S.J., Oddone, E.Z. and Jurgelski, A.E. (2002),
Improving the quality of anticoagulation of patients with atrial fibrillation in
managed care organizations: Results of the Managing Anticoagulation Services
Trial. American Journal of Medicine, 113 (1), 42-51.
Abstract: PURPOSE: Randomized trials have indicated that well-managed
anticoagulation with warfarin could prevent more than half of the strokes related
to atrial fibrillation. However, many patients with atrial fibrillation who are
eligible for this therapy either do not receive it or are not maintained within an
optimal prothrombin time-international normalized ratio (INR) range. We sought
to determine whether an anticoagulation service within a managed care
organization would be a feasible alternative for providing anticoagulation care.
SUBJECTS AND METHODS: We performed a multi-site randomized trial in
six large managed care organizations in the United States. Subjects were aged 65
years or older and had nonvalvular atrial fibrillation. At each site, physician
practices were divided into two geographically defined practice clusters; each
site was randomly assigned to have one intervention and one control cluster. The
intervention cluster received an anti-coagulation service that satisfied
specifications for high-quality anticoagulation care and was coordinated through
the managed care organization. Control clusters continued with their usual
provider-based care. We measured the proportion of time that warfarin-treated
patients in each of the clusters (intervention and control) were in the target range
for the INR at baseline, and again during a follow-up period. RESULTS: Five of
the Six Selected Site, succeeded at developing air anticoagulation service.
Patients in the intervention and control Clusters had Similar demographic
characteristics, contrain-dications to warfarin, and risk factors for stroke. Among
patient, (n = 144 in the intervention clusters; n = 118 in the control clusters) for
whom data were available during the baseline and follow-up periods, the changes
in percentages of time in the target range were similar for those in the
intervention clusters (baseline: 47.7%; follow-up: 55.6%) and in the control
clusters (baseline: 49.1%; follow-up: 52.3%; intervention effect: 5%; 95%
confidence interval: -5% to 14%; P = 0.32). CONCLUSION: Although it was
feasible in a managed care organization to implement anticoagulation services
that were tailored to local circumstances, provision of this service did not
improve anticoagulation care compared With usual care. The effect of the
anticoagulation service was limited by the utilization of the service, the degree to
which the referring physician supports Strict adherence to recommended target
ranges for the INR, and the ability of the anticoagulation service to identify and
to respond to out-of-range Values promptly. (C) 2002 by Excerpta Medica, Inc
Keywords: adherence/aged/anticoagulation/anticoagulation service/atrial/atrial
fibrillation/BLEEDING
COMPLICATIONS/control/fibrillation/INR/INTENSITY/managed care
organization/NEW-YORK/nonvalvular atrial
fibrillation/organizations/OUTCOMES/OUTPATIENTS/PROTHROMBIN
TIME/randomized/randomized trial/risk/risk factors/risk factors for
stroke/RISK-FACTORS/SELF-MANAGEMENT/stroke/STROKE
PREVENTION/THERAPY/trial/trials/United States/warfarin/WARFARIN USE
Wattigney, W.A., Mensah, G.A. and Croft, J.B. (2002), Increased atrial fibrillation
mortality: United States, 1980- 1998. American Journal of Epidemiology, 155 (9),
819-826.
Abstract: The authors used death certificate data to evaluate national trends in the
reporting of atrial fibrillation as an underlying or contributory cause of death for
groups defined by age (45 years or older), sex, and race (Black vs. White) and to
examine comorbidity. The multiple-causes mortality files from 1980 through
1998 were analyzed for decedents, with atrial fibrillation (International
Classification of Diseases, Ninth Revision, code 427.3) listed as one of up to 20
conditions causing death. The number of decedents with atrial fibrillation
increased from 18,947 in 1980 to 61,946 in 1998, and the proportion with atrial
fibrillation reported as the underlying cause of death rose from 8.3% in 1980 to
11.6% in 1998. Age- standardized death rates from 1980 to 1998 were
consistently highest among White men, followed (in descending order) by White
women, Black men, and Black women. Overall, the age- standardized rate (per
100,000) increased from 27.6 in 1980 to 69.8 in 1998 (an average annual
increase of 5.4%, p 325 mg daily, no antiplatelet
regimen is more effective than aspirin for long-term use. In primary prevention,
5 randomized trials have been published involving more than 60 000 apparently
healthy men and women. Persons randomized to receive aspirin in these trials
had significant reductions in risk of a first MI (32%) and important vascular
events (15%). Since the numbers of strokes and vascular deaths were insufficient
to distinguish between the benefits found in secondary prevention and no effect,
use of aspirin in primary prevention should be weighed in light of the
cardiovascular risk profile, the side effects of the drug, and its clear benefit in
reducing risk of a first MI. Aspirin should be an adjunct, not an alternative, to
managing other cardiovascular risk factors. Recently, the US Preventive Services
Task Force and the American Heart Association recommended aspirin use for all
men and women whose 10-year risks are > 6% and greater than or equal to10%,
respectively. In all these patient categories, including secondary prevention,
acute MI and acute occlusive stroke, as well as primary prevention, increased
and appropriate use of aspirin will prevent large numbers of premature deaths
and MIs
Keywords: acute/acute coronary syndromes/acute myocardial
infarction/angina/antiplatelet/antiplatelet drugs/antiplatelet
therapy/aspirin/benefits/bleeding/BRITISH/bypass/cardiovascular/cardiovascular
disease/cardiovascular risk/cardiovascular risk
factors/CARE/causes/clopidogrel/control/coronary artery
bypass/death/disease/drug/drugs/glycoprotein IIb/IIIa receptor
antagonist/HEALTH/high
risk/infarction/ischemic/men/mortality/myocardial/myocardial
infarction/prevention/primary/primary prevention/randomized/RANDOMIZED
TRIAL/randomized trials/research/risk/risk factors/risks/secondary/secondary
prevention/side effects/stroke/therapy/transient/transient ischemic
attacks/treatment/trials/US/USA/use/vascular/vascular events/women
Iwamoto, J., Takeda, T. and Ichimura, S. (2002), Beneficial effect of etidronate on bone
loss after cessation of exercise in postmenopausal osteoporotic women.
American Journal of Physical Medicine & Rehabilitation, 81 (6), 452-457.
Abstract: Objectives: To determine whether etidronate could prevent or restore bone loss
after cessation of exercise in postmenopausal osteoporotic women. Design:
Thirty-five postmenopausal osteoporotic women were studied. Exercise
consisted of daily brisk walking and gymnastic training. The changes in the
lumbar bone mineral density measured by dual energy x-ray absorptiometry were
assessed. Results: One or two years of exercise increased the bone mineral
density from the baseline. One year of cessation of exercise after 1 yr of exercise
resulted in the loss of the bone mineral density gained through exercise. Two
years of cyclical etidronate treatment from year 2 sustained the bone mineral
density during 2 yr of cessation of exercise in the preventative etidronate
treatment group and completely restored the loss of bone mineral density after 1
yr of cessation of exercise in the therapeutic etidronate treatment group.
Conclusions: Cyclical etidronate treatment, when exercise is discontinued, seems
to be beneficial for the prevention or restoration of bone loss after cessation of
exercise in postmenopausal osteoporotic women. Although the present study has
a small sample size, the results may be interesting, especially because they raise
additional questions that could stimulate further research
Keywords: bone mineral density/CALCITRIOL/CALCIUM/cessation of
exercise/etidronate/exercise/Japan/MASS/MINERAL
DENSITY/osteoporosis/postmenopausal
women/prevention/research/STROKE/THERAPY/treatment/WALKING/women
/xray/YOUNG
Nappi, J. and Talbert, R. (2002), Dual antiplatelet therapy for prevention of recurrent
ischemic events. American Journal of Health-System Pharmacy, 59 (18),
1723-1735.
Abstract: The advantages of dual antiplatelet therapy over monotherapy in preventing
recurrent ischemic events are examined. Atherosclerosis is an insidious systemic
process involving multiple vascular beds, including the cerebral, coronary, and
peripheral arteries. Atherosclerotic plaque rupture is one of the inciting events in
the progression of platelet activation, aggregation, and thrombus formation.
Patients with any clinical manifestation of atherosclerosis are vulnerable to
others in different vascular beds since the disease develops throughout the
vasculature, and different vascular events have common, predisposing risk
factors. Ischemic coronary heart disease and cerebrovascular disease are two of
the three most frequent causes of death in the United States. The efficacy of
aspirin in the secondary prevention of myocardial infarction (MI) and stroke has
been demonstrated in numerous trials. While dipyridamole has not been linked
with a greater odds reduction than aspirin in the development of MI, stroke, and
vascular death, ticlopidine and clopidogrel have been associated with a greater
reduction in the development of acute MI, stroke, and vascular death than aspirin.
Clinical trials evaluating the efficacy and safety of combination antiplatelet
therapy in the prevention,of recurrent ischemic events are ongoing. The rationale
for using a combination of two mechanistically different antiplatelet agents is
supported by ex vivo and clinical studies. Inhibition of platelet aggregation and
thrombus formation is enhanced with dual antiplatelet therapy. Combination
antiplatelet regimens with different mechanisms of action to inhibit multiple sites
in the thrombotic pathway may further improve long-term clinical outcomes.
Dual antiplatelet therapy may have advantages over monotherapy in the
prevention of recurrent ischemic events
Keywords: activation/acute/ACUTE CORONARY
SYNDROMES/aggregation/AMERICAN-HEART-ASSOCIATION/antiplatelet/
antiplatelet agents/antiplatelet therapy/ANTITHROMBOTIC
ACTIVITY/arteries/ARTERY
DISEASE/aspirin/atherosclerosis/ATHEROSCLEROTIC
PLAQUES/causes/cerebral/CEREBRAL-ISCHEMIA/cerebrovascular/cerebrova
scular disease/clinical studies/clopidogrel/combination/COMBINATION
THERAPY/combined therapy/coronary heart
disease/death/development/dipyridamole/disease/formation/heart/heart
disease/infarction/ischemia/ischemic/mechanism of
action/mechanisms/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/plaque/plaque
rupture/platelet/platelet activation/platelet aggregation/platelet aggregation
inhibitors/prevention/RECEPTOR ANTAGONIST/risk/risk
factors/safety/secondary/SECONDARY
PREVENTION/stroke/therapy/thrombus/ticlopidine/trials/United
States/vascular/vasculature
Hu, F.B. and Grodstein, F. (2002), Postmenopausal hormone therapy and the risk of
cardiovascular disease: The epidemiologic evidence. American Journal of
Cardiology, 90 (1), 26F-29F.
Abstract: The relation between hormone use in postmenopausal women and
cardiovascular disease remains controversial. Whereas epidemiologic studies and
clinical studies assessing several intermediate cardiovascular disease endpoints
indicate a clear benefit for the primary prevention of coronary artery disease
(CAD), secondary-prevention trials of relatively short duration do not support a
benefit. More recent epidemiologic studies continue to supply evidence that
long-term postmenopausal hormone therapy may reduce the risk for CAD in
healthy women. Adding progestin to the regimen does not appear to attenuate the
benefit. The Nurses' Health Study and studies from Europe, where estradiol is the
commonly prescribed form of estrogen, suggest that estrogen at lower doses may
confer similar benefit. However, remarkably consistent data from both
epidemiologic studies and a secondary-prevention trial indicate a significantly
increased risk of venous thromboembolism with hormone use. The data on stroke
are inconclusive, but there is little evidence to suggest a benefit of hormone use
on either ischemic or hemorrhagic stroke. Existing evidence indicates that the
various potential benefits and risks should be weighed carefully when
prescribing hormone therapy to a postmenopausal woman. (C) 2002 by Excerpta
Medica, Inc
Keywords: cardiovascular/cardiovascular disease/clinical studies/coronary artery
disease/CORONARY
HEART-DISEASE/DIET/disease/ESTROGEN/Europe/ischemic/LIFE-STYLE/
NEW-YORK/postmenopausal women/prevention/primary/primary
prevention/PROGESTIN/REPLACEMENT THERAPY/risk/SECONDARY
PREVENTION/STROKE/therapy/thromboembolism/trial/trials/use/venous
thromboembolism/WOMEN
Newman, N.J., Scherer, R., Langenberg, P., Kelman, S., Feldon, S., Kaufman, D. and
Dickersin, K. (2002), The fellow eye in NAION: Report from the ischemic optic
neuropathy decompression trial follow-up study. American Journal of
Ophthalmology, 134 (3), 317-328.
Abstract: PURPOSE: To examine the prevalence and incidence of second eye
nonarteritic anterior ischemic optic neuropathy (NAION) and associated patient
characteristics in patients enrolled in the Ischemic Optic Neuropathy
Decompression Trial (IONDT) Follow-up Study. DESIGN: Randomized clinical
trial with observational cohort. METHODS: Patients randomized to optic nerve
sheath decompression surgery or careful follow,up had a diagnosis of acute
unilateral NAION, visual acuity between 20/64 and light perception, and were
aged 50 years or older. Eligible patients who declined randomization or whose
visual acuity was better than 20/64 were not randomized but followed as part of
an observational cohort. Follow-up examinations took place at 3, 6, 12, 18, and
24 months and annually thereafter. RESULTS: Four hundred eighteen patients
were enrolled; 258 randomized and 160 observed. Previous NAION or other
optic neuropathy was present in the fellow eye of 21.1% (88/418) of patients at
baseline. Four patients developed optic neuropathy in the fellow eye at follow up
that could not be conclusively diagnosed as NAION. New NAION in the fellow
eye occurred in 14.7% (48/326) of patients at risk during a median follow up of
5.1 years. Randomized patients experienced a higher incidence (35/201; 17.4%)
than nonrandomized patients (13/125; 10.4%). A history of diabetes and baseline
visual acuity of 20/200 or worse in the study eye, but not age, sex, aspirin use, or
smoking were significantly associated with new NAION in the fellow eye. Final
fellow eye visual acuity was significantly worse in those patients with new
fellow eye NAION whose baseline study eye visual acuity was 20/200 or worse.
CONCLUSIONS: Follow-up data from the IONDT cohort provide evidence that
the incidence of fellow eye NAION is lower than expected: new NAION was
diagnosed in 14.7% of IONDT patients over approximately 5 years. Increased
incidence is associated with poor baseline visual acuity in the study eye and
diabetes, but not age, sex, smoking history, or aspirin use. (C) 2002 by Elsevier
Science Inc. All rights reserved
Keywords: acute/age/aged/ASPIRIN/CLINICAL PROFILE/clinical
trial/DESIGN/diabetes/diagnosis/history/incidence/ischemic/NATURAL-HISTO
RY/NEW-YORK/prevalence/PREVENTION/randomized/risk/RISK-FACTORS
/sex/SMOKING/STROKE/surgery/THERAPY/trial/use
Rubia, M., Marcos, I. and Muennig, P.A. (2002), Increased risk of heart disease and
stroke among foreign-born females residing in the United States. American
Journal of Preventive Medicine, 22 (1), 30-35.
Abstract: Background: Although the number of foreign-born people residing ill the
United States is at its highest point in 80 Nears, a mortality analysis of the
foreign born has not been conducted Since 1989. This article provides all update
Of mortality rates among the foreign burn in the United States and, in particular,
examines mortality rates from heart disease among foreign-born females.
Methods: We calculated mortality rates for U.S.-born and foreign-born people
for all causes ischemic heart disease. stroke, neoplastic disease, hypertensive
diseases, diabetes, accidents, infectious disease, and chronic obstructive
pulmonary disease-for 1997. Death data were obtained from the 1997 Multiple
Cause of Death data file, and population data were obtained from the 1997
Current Population Survey. Results: While all-cause, age-adjusted mortality rates
for foreign-born people are significantly lower than for native-born people,
deaths due to ischemic heart disease and stroke are significantly higher among
foreign-born females than native- born females (161.63) and 58.24 deaths,
espectively, per 100,000 foreign-born females vs 122.01 and 19.39 deaths per
100,000 native-born females). Conclusions: Foreign-born females appear to be at
greater risk of death from ischemic heart disease and stroke than native-born
females. Future research efforts are needed to determine which Foreign-born
groups are most at risk for heart disease and stroke so that targeted prevention
efforts can be initiated
Keywords: ACCULTURATION/BIRTH/causes/chronic/CORONARY-ARTERY
DISEASE/cross-sectional studies/death/diabetes/disease/diseases/emigration and
immigration/HEALTH/heart/heart disease/ischemic/ischemic heart
disease/MORTALITY/mortality/NATIVITY/NEW-YORK/NEW-YORK-CITY/
population/POPULATIONS/prevention/pulmonary/research/risk/stroke/United
States/WOMEN
Lew, H.L., Lee, E.H., Date, E.S. and Melnik, I. (2002), Rehabilitation of a patient with
heat stroke - A case report. American Journal of Physical Medicine &
Rehabilitation, 81 (8), 629-632.
Abstract: The recent death of a famous football player raised public awareness of the
fatal nature of heat stroke, which is actually the third leading cause of death
among American athletes. We present a typical case of heat stroke to illustrate its
clinical manifestation and recovery process; risk factors, treatment options, and
the importance of prevention are also discussed. Although heat stroke is not a
common admission diagnosis for inpatient rehabilitation, physiatrists need to be
aware of its pathophysiology, rehabilitation management, and prevention
Keywords: awareness/case report/cause of death/CLINICAL
CHARACTERISTICS/death/diagnosis/heat/heat
stroke/HEATSTROKE/management/pathophysiology/PILGRIMAGE/prevention
/rehabilitation/risk/risk factors/stroke/treatment
Djousse, L., Folsom, A.R., Province, M.A., Hunt, S.C. and Ellison, R.C. (2003), Dietary
linolenic acid and carotid atherosclerosis: the National Heart, Lung, and Blood
Institute Family Heart Study. American Journal of Clinical Nutrition, 77 (4),
819-825.
Abstract: Background: Dietary intake of linolenic acid is associated with a lower risk of
cardiovascular disease mortality. However, it is unknown whether linolenic acid
is associated with a lower risk of carotid atherosclerosis. Objective: The
objective was to examine the association between dietary linolenic acid and the
presence of atherosclerotic plaques and the intima-media thickness of the carotid
arteries. Design: In a cross-sectional design, we studied 1575 white participants
of the National Heart, Lung, and Blood Institute Family Heart Study who were
free of coronary artery disease, stroke, hypertension, and diabetes mellitus.
High-resolution ultrasound was used to assess intima-media thickness and the
presence of carotid plaques beginning 1 cm below to 1 cm above the carotid bulb.
We used logistic regression and a generalized linear model for the analyses.
Results: From the lowest to the highest quartile of linolenic acid intake, the
prevalence odds ratio (95% CI) of a carotid plaque was 1.0 (reference), 0.47
(0.30, 0.73), 0.38 (0.22, 0.66), and 0.49 (0.26, 0.94), respectively, in a model that
adjusted for age, sex, energy intake, waist-to-hip ratio, education, field center,
smoking, and the consumption of linoleic acid, saturated fat, fish, and vegetables.
Linoleic acid, fish long-chain fatty acids, and fish consumption were not
significantly related to carotid artery disease. Linolenic acid was inversely
related to thickness of the internal and bifurcation segments of the carotid
arteries but not to the common carotid artery. Conclusion: Higher consumption
of total linolenic acid is associated with a lower prevalence odds of carotid
plaques and with lesser thickness of segment-specific carotid intima-media
thickness
Keywords: age/and Blood Institute Family Heart
Study/arteries/atherosclerosis/cardiovascular/cardiovascular
disease/cardiovascular disease mortality/carotid/carotid arteries/carotid
artery/carotid artery disease/carotid atherosclerosis/coronary artery
disease/CORONARY-ARTERY DISEASE/DENSITY-LIPOPROTEIN
CHOLESTEROL/design/diabetes/diabetes mellitus/diet/disease/disease
mortality/education/energy intake/Family Heart Study/fat/fish/FOOD
FREQUENCY QUESTIONNAIRE/hypertension/internal/intima-media
thickness/linolenic acid/Lung/MEN/mortality/n-3 fatty acids/n-6 fatty
acids/National Heart/NUTRITION/plaque/POLYUNSATURATED
FATTY-ACIDS/prevalence/PREVENTION/REPRODUCIBILITY/RISK/sex/sm
oking/stroke/ultrasound/USA/VALIDITY/vegetables/WOMEN
Blake, G.J., Ridker, P.M. and Kuntz, K.M. (2003), Potential cost-effectiveness of
C-reactive protein screening followed by targeted statin therapy for the primary
prevention of cardiovascular disease among patients without overt
hyperlipidemia. American Journal of Medicine, 114 (6), 485-494.
Abstract: BACKGROUND: Evidence suggests that statin therapy reduces the rate of
cardiovascular events among patients with low lipid levels but elevated
C-reactive protein levels. However, no cost-effectiveness analyses have been
performed to assist in determining whether large-scale randomized trials are
merited to test this hypothesis. METHODS: We used a Markov model to
estimate the benefits, costs, and incremental cost- effectiveness of C-reactive
protein screening followed by targeted statin therapy for elevated C-reactive
protein levels, compared with dietary counseling alone, for the primary
prevention of cardiovascular events among patients with low- density lipoprotein
cholesterol levels 20 antihypertensive therapy outcome trials found
that the reduction in myocardial infarction risk with ramipril observed in HOPE
was consistent with the modest blood pressure reduction seen with that agent.
Nevertheless, there are convincing data for prevention of myocardial infarction
with ACE inhibitors in patients with heart failure, including those with heart
failure after myocardial infarction, as well as supportive evidence from studies in
patients with diabetes mellitus and cancomitant hypertension. On the other hand,
Dr. William B. White takes the position that ARBs are well-tolerated
antihypertensive agents that specifically antagonize the angiotensin II type 1
(AT(1)) receptor and provide a more complete block of the pathologic effects of
angiotensin II-which are mediated via the AT(1) receptor-than ACE inhibitors.
The Evaluation of Losartan in the Elderly (ELITE) 11 study and the Valsartan
Heart Failure Trial (ValHeFT) suggest that ARBs reduce the risk for mortality in
patients with congestive heart failure. The Losartan Intervention for Endpoint
(LIFE) Reduction in Hypertension trial also demonstrated beneficial effects of
ARBs in the prevention of stroke events. The Irbesartan in Patients with Diabetes
and Microalbuminuria (IRMA) study, the Irbesartan Diabetic Nephropathy Trial
(IDNT), and the Reduction of Endpoints in NIDDM with the Angiotensin II
Antagonist Losartan (RENAAL) study demonstrated significant reductions in the
rate of progression of renal disease in patients receiving ARBs, independent of
effects on blood pressure. These data support the use of ARBs, in addition to the
standard of care, in hypertensive patients with heart failure who are intolerant of
ACE inhibitors, and also provide compelling evidence for their use in patients
with hypertension and type 2 diabetes. (C) 2003 by Excerpta Medica, Inc
Keywords: ACE inhibitors/angiotensin/angiotensin II/ANTAGONISTS/antihypertensive
agents/antihypertensive therapy/blood pressure/BLOOD-PRESSURE
REDUCTION/cardiovascular/CARDIOVASCULAR
MORBIDITY/cerebrovascular/congestive heart failure/CT/diabetes/diabetes
mellitus/DIABETIC NEPHROPATHY/diastolic blood
pressure/disease/ELITE/heart/heart failure/HEART-FAILURE/high
risk/HYPERTENSION/incidence/infarction/INTERVENTION/LIFE/LOSARTA
N/MORTALITY/myocardial/myocardial
infarction/NEW-YORK/NIDDM/outcome/prevention/progression/ramipril/RAN
DOMIZED TRIAL/renal/renal disease/risk/stroke/systolic blood/systolic blood
pressure/therapy/treatment/trial/trials/type 2 diabetes/USA/use
Penado, S., Cano, M., Acha, O., Hernandez, J.L. and Riancho, J.A. (2003), Atrial
fibrillation as a risk factor for stroke recurrence. American Journal of Medicine,
114 (3), 206-210.
Abstract: BACKGROUND: Although atrial fibrillation is a well-known risk, factor for
ischemic stroke, the extent to which it increases the risk of stroke recurrence,
particularly in elderly patients, is less certain. METHODS: We performed a
retrospective cohort study of 915 patients aged 50 to 94 years who were admitted
with an ischemic stroke. The rates of recurrent strokes and recurrent severe
strokes were estimated with the Kaplan-Meier method. The effects of atrial
fibrillation on stroke risk were analyzed with proportional hazards models.
RESULTS: Of the 829 patients who survived the initial hospitalization, 163
(20%) had a stroke during follow- up. Of the 203 patients with-atrial fibrillation
during index hospitalization who were not anticoagulated, 54 (27%) had
recurrent strokes, compared with 18% (19/103) among those with atrial
fibrillation who were anticoagulated and 17% (90/523) among those without
atrial fibrillation. The age-adjusted hazard ratio for recurrent stroke among those
with atrial fibrillation who were not treated with anticoagulants was 2.1 (95%
confidence interval [Cl]: 1.4 to 2.9; P 3.1 cm(2) vs 14.4 +/- 3.3 cm(2), n = 42, P 4.4 cm2 vs 16.3 +/- 4.2 cm(2), n = 7,
P79 years old. The records
of all patients older than 79 years of age who underwent a CEA in a recent time
period from January 1988 to December 1996 were retrospectively reviewed.
Forty-one patients (31 men, 10 women) were identified by computer search. The
indication for operation included transient ischemic attack in 12 (29.3%),
amaurosis fugax in nine (22%), stroke in two (4.9%), and nonhemispheric
symptoms in three (7.3%). Fifteen patients (36.6%) were asymptomatic. Medical
risk factors included coronary artery disease in 26 (63.4%), hypertension in 22
(53.7%), and smoking in 12 (29.3%). The procedure was performed under EEG
monitoring in all patients. General anesthesia was administered in 37 (90%) and
regional anesthesia in four (10%). Shunts were used in four (10%) patients. The
internal carotid artery was patched in 16 patients (39%). One patient (2.4%)
developed a perioperative stroke and only one patient developed perioperative
myocardial infarction (MI). None of the patients died within 30 days of surgery.
In addition to the one MI case, five patients developed minor complications. The
average length of time for stay after CEA was 3.4 days. Patients were followed
up for an average of 20.7 months. Six patients died during follow-up. Four of
those died from an MI and two from a stroke. The authors conclude that with
proper selection of patients, CEA is safe in the octogenarian. Age alone should
not be a contraindication for CEA
Keywords: age/carotid/carotid endarterectomy/clinical trials/complications/coronary
artery disease/EEG/endarterectomy/HEAD/hypertension/infarction/myocardial
infarction/prevention/RISK/risk factors/smoking/stroke/stroke
prevention/SURGERY/transient/transient ischemic attack/trials/women
Wakita, M., Yasaka, M., Minematsu, K. and Yamaguchi, T. (2002), Effects of
anticoagulation on infarct size and clinical outcome in acute cardioembolic
stroke. Angiology, 53 (5), 551-556.
Abstract: Effects of anticoagulation on infarct size and outcome have not been fully
elucidated in patients with acute cardioembolic stroke, although the
anticoagulation therapy reduces both occurrence and recurrence of ischemic
stroke greatly. The authors retrospectively investigated the relationship of
anticoagulation intensity to infarct size and outcome. In 104 consecutive patients
(mean age 70.8 +/- 10.0 years) who had suffered acute supratentorial
cardioembolic infarction or transient ischemic attacks, they analyzed risk factors
for atherosclerosis, underlying heart diseases, the infarct size (maximal area) on
brain computed tomography, and modified Rankin scale score upon discharge,
They compared these clinical data between patients who had received warfarin
before the ictus and those who had not. In addition, they investigated the effects
of the international normalized ratio (INR) on infarct size and outcome in 19
patients who had been receiving anticoagulant therapy and had measurement of
INR within 24 hours after stroke onset. There were 25 patients who had received
anticoagulation before the stroke (A/C group) and 79 patients who had not
(non-A/C group). The infarct size in the A/C group tended to be smaller than that
in the non-A/C group (p = 0.081, Mann-Whitney U test). In the 19 patients who
had prior anticoagulation and measurement of INR within 24 hours of stroke
onset, large infarcts were seen in 6 of 13 patients with INR 12 vs. less than or equal to 12 (odds ratio [OR] = 0.4, 95%
confidence interval [CI] = 0.2-0.8); smoking greater than or equal to 20
cigarettes/day vs. nonsmokers (OR = 2.8, 95% CI = 1.1-7.3); and the regular use
of multivitamins (OR = 0.4, 95% CI = 0.2-0.9). CONCLUSIONS: These results
suggest that a substantial proportion of healthy young premenopausal women
have tHcy levels that increase their risk for vascular disease. A number of
potentially modifiable behavioral and environmental factors appear to be
significantly related to elevated tHcy levels in young women
Keywords: age/aged/alcohol/blacks/cholesterol/COMMON
MUTATION/CORONARY-ARTERY
DISEASE/correlates/DETERMINANTS/education/FOLATE/FOLIC-ACID/hom
ocyst(e)ine/homocysteine/HORDALAND
HOMOCYSTEINE/METHYLENETETRAHYDROFOLATE
REDUCTASE/NEW-YORK/PLASMA HOMOCYSTEINE
CONCENTRATIONS/population/population-based/race/risk/RISK
FACTOR/risk factors/risk factors for stroke/smoking/stroke/vascular/vascular
disease/VASCULAR- DISEASE/women
Williams, R.R., Rao, D.C., Ellison, R.C., Arnett, D.K., Heiss, G., Oberman, A., Eckfeldt,
J.H., Leppert, M.F., Province, M.A., Mokrin, S.C. and Hunt, S.C. (2000),
NHLBI Family Blood Pressure Program: Methodology and recruitment in the
HyperGEN network. Annals of Epidemiology, 10 (6), 389-400.
Abstract: PURPOSE: Hypertension is a common precursor of serious disorders
including stroke, myocardial infarction, congestive heart failure, and renal failure
in whites and to a greater extent in African Americans. Large
genetic-epidemiological studies of hypertension are needed to gain information
that will improve future methods for diagnosis, treatment, and prevention of
hypertension, a major contributor to cardiovascular morbidity and mortality.
METHODS: We report successful implementation of a new structure of research
collaboration involving four NHLBI "Networks," coordinated under the Family
Blood Pressure Program. The Hypertension Genetic Epidemiology Network
(HyperGEN) involves scientists from six universities and the NHLBI who seek
to identify and characterize genes promoting hypertension. Blood samples and
clinical data were projected to be collected from a sample of 2244 hypertensive
siblings diagnosed before age 60 from 960 sibships (half African-American) with
two or more affected persons. Nonparametric sibship linkage analysis of over
one million genotype determinations (20 candidate loci and 387 anonymous
marker loci) was projected to have sufficient power for detecting genetic loci
promoting hypertension. For loci showing evidence for linkage in this study and
for loci reported linked or associated with hypertension by other groups,
genotypes are compared in hypertensive cases Versus population-based controls
to identify or confirm genetic variants associated with hypertension. For some of
these genetic variants associated with hypertension, detailed physiological and
biochemical characterization of untreated adult offspring carriers versus
non-carriers may help elucidate the pathophysiological mechanisms that promote
hypertension. RESULTS: The projected sample size of 2244 hypertensive
participants was surpassed, as 2407 hypertensive individuals (1262 African
Americans and 1145 whites) from 917 sibships were examined. Detailed consent
forms were designed to offer participants several options for DNA testing; 94%
of participants gave permission for DNA testing now or in the future for any
confidential medical research, with only 6% requesting restrictions for tests
performed on their DNA. Since this is a family study, participants also are asked
to list all first degree relatives (along with names, addresses, and phone numbers)
and to indicate for each relative whether they were willing to allow study staff to
make a contact. Seventy percent gave permission to contact some relatives; about
30% gave permission to contact all first degree relatives; and less than 1% asked
that no relatives be contacted. Successes after the first four years of this study
include: 1) productive collaboration of eight centers from six different locations;
2) early achievement of recruitment goals for study participants including
African-Americans; 3) an encouraging rate of consent for DNA testing
(including future testing) and relative contacting; 4) completed analyses of
genetic linkage and association for several candidate gene markers and
polymorphisms; 5) completed genotyping of random markers for over half of the
full sample; and 6) early sharing of results among the four Family Blood
Pressure Program networks for candidate and genome search analyses.
CONCLUSIONS: Experience after four years of this five-year program
(1995-2000) suggests that the newly initiated NHLBI Network Program
mechanism is fulfilling many of the expectations for which it was designed. It
may serve as a paradigm for future genetic research that can benefit from large
sample sizes, frequent sharing of ideas among laboratories, and prompt
independent confirmation of early findings, which are required in the search for
common genes with relatively small effects such as those that predispose to
human hypertension. Ann Epidemiol 2000;10:389- 400. Published by Elsevier
Science inc
Keywords: African Americans/age/ANGIOTENSINOGEN/ASSOCIATIONS/blood
pressure/cardiovascular/cardiovascular morbidity/CARDIOVASCULAR
RISK-FACTORS/congestive heart
failure/consent/diagnosis/DNA/DYSLIPIDEMIC
HYPERTENSION/epidemiology/EXTENSIVE
INFORMATION/FRENCH-CANADIAN
POPULATION/GENE/genes/genetic/genetics/heart/heart
failure/human/hypertension/infarction/linkage/linkage
analysis/markers/morbidity/mortality/myocardial/myocardial
infarction/NEW-YORK/pathophysiology/population-based/prevention/recruitme
nt/renal/SODIUM-LITHIUM
COUNTERTRANSPORT/stroke/treatment/TWINS/UTAH PEDIGREES
Du, X.L., McNamee, R. and Cruickshank, K. (2000), Stroke risk from multiple risk
factors combined with hypertension: A primary care based case control study in
a defined population of northwest England. Annals of Epidemiology, 10 (6),
380-388.
Abstract: PURPOSE: To examine how hypertension interacts with ether known risk
factors in affecting the rick of stroke in a primary care based setting. METHODS:
Cases were patients with first-ever stroke identified from the community-based
stroke register in 1994-95 in northwest England. Two controls per case wore
randomly selected from the same primary care site and matched by age and sex.
Information on predefined risk factors was extracted from medical records.
RESULTS: 267 cases and 534 controls were included. Adjusted odds ratio (OR)
for stroke from hypertension was 2.6 (95%, confidence interval: 1.7-3.9). In
hypertensives who were current smokers, risk of stroke was increased 6 fold (OR
= 6.1 (2.7-13.7)) as compared to non- smokers without hypertension.
Hypertensives who had a preexisting history of myocardial infarction or obesity
or diabetes had 3 fold higher risks of stroke. Subjects with hypertension and with
a history of transient ischemic attack or atrial fibrillation had greater than or
equal to 8 fold excess risk of stroke. Among them, the risk was greater in those
with poorly controlled or untreated hypertension (OR = 13.2 (2.6- 67.0)) and in
those with well or moderately controlled (OR = 5.2 (1.6-17.2)) as compared to
subjects without both risk factors. There appeared to be a steady increase in rick
of stroke according to the number of risk factors present, particularly in
hypertensive subjects. CONCLUSIONS: Stroke risks in hypertensives associated
with combinations of other risk factors appeared to follow an additive model.
Subjects with multiple risk factors should he targeted in order to reduce the
overall risk for stroke. Ann Epidemiol 2000;10:380- 388. (C) 2000 Elsevier
Science Inc. All rights reserved
Keywords: age/ALCOHOL/atrial
fibrillation/BLOOD-PRESSURE/CARDIOVASCULAR-DISEASE/case-control
study/CEREBROVASCULAR-
DISEASE/COMMUNITY/control/diabetes/England/fibrillation/FRAMINGHA
M/HEALTH/history/hypertension/infarction/ischemic/MANAGEMENT/myocar
dial/myocardial
infarction/NEW-YORK/obesity/population/PREVENTION/primary/primary
care/risk/risk factors/sex/stroke/transient/transient ischemic attack/WEST
ENGLAND
Schreiner, P.J., Wu, K.K., Malinow, M.R., Stinson, V.L., Szklo, M., Nieto, J. and Heiss,
G. (2002), Hyperhomocyst(e)inemia and hemostatic factors: The atherosclerosis
risk in communities study. Annals of Epidemiology, 12 (4), 228-236.
Abstract: PURPOSE: To determine whether homocyst(e)ine (H(e)) is related to
hemostatic factors in a population-based sample without evidence of
cardiovascular disease. METHODS: A subsample of 660 participants-67
African-American women, 53 African-American men, 201 white women, and
339 white men-was selected from the Atherosclerosis Risk in Communities
Study baseline cohort. This was based on carotid intimal-medial wall thickness
above the 90th percentile or below the 75th percentile of the population
distribution, assessed by B-mode ultrasonography. Unadjusted and
multivariable-adjusted associations between fasting plasma H(e) and the
hemostatic factors fibrinogen, factor VII:c, factor VIII:c, protein C antigen,
hematocrit, platelet count, beta-thromboglobulin ( beta-TG), tissue plasminogen
activator (tPA), PAI-1, D-dimer, and lipoprotein[a] were examined. RESULTS:
Mean age-adjusted H(e) was positively, albeit weakly, correlated with beta-TG,
tPA, hematocrit, D-dimer and PAI-1; inversely cot-related with protein C; and
was higher in smokers, men and African-Americans. In multivariable regression,
beta-TG, tPA, and factor VII:c were positively associated with H(e), as well as
age, black race, male sex, and current cigarette smoking. CONCLUSIONS:
These cross-sectional data for a biracial group of middle-aged individuals
suggest that H(e) levels falling below values consistent with homocyst(e)inemia
are associated with several prothrom boric factors after adjustment for
sociodemographic factors. If H(e) change is antecedent to altered hemostasis,
FDA-mandated fortification of grain products with folic acid for prevention of
fetal neural tube defects may lead to both reduced plasma H(e) levels and
improved hemostatic profiles. (C) 2002 Elsevier Science Inc. All rights reserved
Keywords: African American/African Americans/African-American
women/age/atherosclerosis/cardiovascular/cardiovascular
disease/carotid/cigarette smoking/CORONARY-ARTERY
DISEASE/disease/fibrinogen/folic acid/HEART-
DISEASE/hematocrit/hemostasis/homocyst(e)ine/homocysteine/LIPOPROTEIN
(A)/men/MYOCARDIAL-INFARCTION/NEW-YORK/PLASMA
HOMOCYST(E)INE/plasminogen
activator/platelet/population/population-based/prevention/PROTEIN-C
ACTIVATION/race/risk/SERUM TOTAL
HOMOCYSTEINE/sex/smoking/STROKE/TISSUE-PLASMINOGEN-ACTIV
ATOR/tPA/ultrasonography/VASCULAR-DISEASE/women
Yeh, S.P., Hsueh, E.J., Wu, H. and Wang, Y.C. (1998), Ticlopidine-associated aplastic
anemia - A case report and review of literature. Annals of Hematology, 76 (2),
87-90.
Abstract: Serious hematologic complications associated with ticlopidine have been
reported, including aplastic anemia. We report here an additional case of fatal
aplastic anemia due to ticlopidine. A 66-year-old male patient developed fever
and pancytopenia 2 months after ticlopidine was started. Despite the
administration of granulocyte colony-stimulating factor (G-CSF) and
broad-spectrum antibiotics, as well as aggressive red cell and platelet
transfusions, the patient died 16 days after admission due to septic shock.
Eighteen other cases of ticlopidine-induced aplastic anemia published in the
English literature are also reviewed and presented here. Eight of the total 19
patients (including the one reported here) have died, mostly due to infection. Of
the seven who received supportive treatment only, four had spontaneous
recovery. Nine cases were treated with G-CSF or granulocyte-macrophage
colony-stimulating factor (GM-CSF), and response was observed in only four of
them. Several other cases were treated with high-dose corticosteroids or
androgens; however, it was not possible to evaluate the efficacy of these
treatments because of the limited number of cases. In the absence of satisfactory
treatment for ticlopidine-induced aplastic anemia at present, it may be reasonable
to try antilymphocyte globulin or cyclosporine. Also, great efforts should be
made in the prevention and management of infection accompanying this disease
Keywords: administration/antilymphocyte globulin/aplastic
anemia/complications/corticosteroid/cyclosporine/growth
factor/MECHANISM/NEW-YORK/PATIENT/PREVENTION/STROKE/THER
APY/ticlopidine/treatment
Yasaka, M., Oomura, M., Ikeno, K., Naritomi, H. and Minematsu, K. (2003), Effect of
prothrombin complex concentrate on INR and blood coagulation system in
emergency patients treated with warfarin overdose. Annals of Hematology, 82 (2),
121-123.
Abstract: We investigated the effect of prothrombin complex concentrate (PCC) on the
international normalized ratio (INR) and blood coagulation system in two
emergent patients treated with warfarin for secondary prevention of
cardioembolic stroke due to nonvalvular atrial fibrillation. An 80-year-old
woman developed massive subcutaneous hemorrhage and swelling on her right
upper extremity with weak pulsation of the right radial artery and had an INR
above 10. An 83-year-old man had pleural effusion with an INR value of 6.69
and pleural puncture was immediately required. We administered 500 IU of PCC
to the two patients (17.2 IU/kg and 12.5 IU/kg) with 10 mg of vitamin K. The
INR decreased to 1.12 and 1.85, respectively, with an increase of plasma levels
of protein C and coagulant factors IIa, VIIa, IXa, and Xa 10 min after
administration. The plasma levels of the thrombin-antithrombin III complex
increased (from 4.0 to 12.0 mug/l and from 0.5 to 28.9 mug/l, respectively,
normal value 0.2). The
incidence of hemorrhage was 2% in both groups. Conclusion: Low-
molecular-weight heparinoid, given in a fixed dose of 750 anti- factor Xa units
subcutaneously twice daily, is more effective than subcutaneous low-dose
heparin for the prevention of deep vein thrombosis in patients with acute
ischemic stroke
Keywords: CEREBROVASCULAR DISORDERS/CONTROLLED
TRIAL/ENOXAPARIN/HEPARIN/HEPARINOID/HIP-
SURGERY/LEG/LOW-DOSE
HEPARIN/ORG-10172/PROPHYLAXIS/THROMBOEMBOLISM/VENOUS
THROMBOSIS
Anderson, D.C., Asinger, R.W., Newburg, S.M., Farmer, C.C., Wang, K., Bundlie, S.R.,
Koller, R.L., Jagiella, W.M., Kreher, S., Jorgensen, C.R., Sharkey, S.W., Flaker,
G.C., Webel, R., Nolte, B., Stevenson, P., Byer, J., Wright, W., Chesebro, J.H.,
Wiebers, D.O., Holland, A.E., Miller, D.M., Bardsley, W.T., Litin, S.C.,
Meissner, I., Zerbe, D.M., Mcanulty, J.H., Marchant, C., Coull, B.M., Feldman,
G., Hayward, A., Gandara, E., Macmillan, K., Blank, N., Leonard, A.D., Kanter,
M.C., Isensee, L.M., Quiroga, E.S., Presti, C.H., Tegeler, C.H., Logan, W.R.,
Hamilton, W.P., Green, B.J., Bacon, R.S., Redd, R.M., Cadell, D.J., Gomez,
C.R., Janosik, D.L., Labovitz, A.J., Kelley, R.E., Chahine, R., Cristo, L.,
Palermo, M., Perez, O., Feinberg, W.M., Vold, B.K., Kern, K.B., Appleton, C.,
Miller, V.T., Hockersmith, C.J., Cohen, B.A., Martin, G.J., Pawlow, A.J.,
Halperin, J.L., Rothlauf, E.B., Weinberger, J.M., Goldman, M.E., Fuster, V.,
Dittrich, H.C., Rothrock, J.F., Hagenhoff, C., Helgason, C.M., Kondos, G.T.,
Hoff, J., Kaufmann, L., Rabjohns, R.R., Mcrae, R.P., Ghali, J., Adams, H.P.,
Theilen, E.O., Biller, J., Brown, D.D., Marsh, E.E., Sirna, S.J., Mitchell, V.L.,
Rothbart, R.M., Bailey, G.H., Burkhardt, C., Blackshear, J.L., Weaver, L., Lee,
G., Lane, G., Rubino, F., Safford, R., Kronmal, R.A., Mcbride, R., Athearn,
M.W., Pearce, L.A., Nasco, E., Hart, R.G., Sherman, C.P., Sherman, D.G.,
Talbert, R.L., Dacy, T.L. and Heberling, P.A. (1992), Predictors of
Thromboembolism in Atrial-Fibrillation .1. Clinical-Features of Patients at Risk.
Annals of Internal Medicine, 116 (1), 1-5.
Abstract: Objective: To identify those patients with nonrheumatic atrial fibrillation who
are at high risk and those at low risk for arterial thromboembolism. Design:
Cohort study of patients assigned to placebo in a randomized clinical trial.
Setting: Five hundred sixty-eight inpatients and outpatients with nonrheumatic
atrial fibrillation assigned to placebo therapy at 15 U.S. medical centers from
1987 to 1989 in the Stroke Prevention in Atrial Fibrillation study. Patients were
followed for a mean of 1.3 years. Measurements: Clinical variables were
assessed at study entry and correlated with subsequent ischemic stroke and
systemic embolism by multivariate analysis. Main Results: Recent (within 3
months) congestive heart failure, a history of hypertension, and previous arterial
thromboembolism were each significantly and independently associated with a
substantial risk for thromboembolism (> 7% per year; P less- than-or-equal-to
0.05). The presence of these three independent clinical predictors (recent
congestive heart failure, history of hypertension, previous thromboembolism)
defined patients with rates of thromboembolism of 2.5% per year (no risk
factors), 7.2% per year (one risk factor), and 17.6% per year (two or three risk
factors). Nondiabetic patients without these risk factors, comprising 38% of the
cohort, had a low risk for thromboembolism (1.4% per year; 95% Cl, 0.05% to
3.7%). Patients without clinical risk factors who were under 60 years of age had
no thromboembolic events. Conclusion: Patients with atrial fibrillation at high
risk (> 7% per year) and low risk ( 0.2). The risk ratios for nonfatal and fatal stroke
with fibrates, resins, and dietary interventions were all close to 1.0, and the
difference between the HMGcoA reductase inhibitor effect and the pooled
estimate for all other interventions would, under the null hypothesis, be unlikely
to occur by chance (P = 0.01). Trials with HMGcoA reductase inhibitors also
showed reductions in rates of death from coronary heart disease and overall
mortality. Conclusion: This meta-analysis of randomized, controlled trials
suggests that in hyperlipidemic patients who have not previously had stroke,
HMGcoA reductase inhibitors reduce the incidence of stroke
Keywords: ARTERY
DISEASE/cerebrovascular/cholesterol/CHOLESTEROL-LOWERING
TRIALS/control/coronary heart disease/CORONARY
HEART-DISEASE/heart/HMGcoA
inhibitors/hypercholesterolemia/incidence/meta-analysis/MIDDLE-AGED
MEN/MORTALITY/MYOCARDIAL-INFARCTION/PHYSICIANS/PRIMAR
Y- PREVENTION TRIAL/RACE/randomized/RISK/SECONDARY
PREVENTION/SERUM-CHOLESTEROL/stroke/treatment/trials
Lewis, S.J., Moye, L.A., Sacks, F.M., Johnstone, D.E., Timmis, G., Mitchell, J.,
Limacher, M., Kell, S., Glasser, S.P., Grant, J., Davis, B.R., Pfeffer, M.A. and
Braunwald, E. (1998), Effect of pravastatin on cardiovascular events in older
patients with myocardial infarction and cholesterol levels in the average range -
Results of the cholesterol and recurrent events (CARE) trial. Annals of Internal
Medicine, 129 (9), 681-+.
Abstract: Background: A majority of all myocardial infarctions occur in patients who are
65 years of age or older and have average cholesterol levels, but little
information is available on whether cholesterol lowering in such patients reduces
the rate of recurrent cardiovascular disease. Objective: To determine whether
pravastatin reduces the rate of recurrent cardiovascular events in older patients.
Design: Subset analysis of a randomized, controlled trial. Setting: 80 hospitals
and affiliates in the United States and Canada. Patients: 1283 patients aged 65 to
75 years who had had myocardial infarction and had a plasma total cholesterol
level less than 6.2 mmol/L (240 mg/dL) and a low-density lipoprotein cholesterol
level of 3.0 to 4.5 mmol/L (115 to 174 mg/dL). Intervention: Pravastatin, 40
mg/d, or placebo. Measurements: Five-year event rates of major coronary events
(coronary death, nonfatal myocardial infarction, angioplasty, or bypass surgery)
and stroke. Results: Major coronary events occurred in 28.1% of placebo
recipients and 19.7% of pravastatin recipients (difference, 9.0 percentage points
[95% CI, 4 to 13 percentage points]; relative risk reduction, 32%; P 0.2 for the
difference). Conclusions: In patients who had preexisting vascular disease or
diabetes combined with an additional cardiovascular risk factor, mild renal
insufficiency significantly increased the risk for subsequent cardiovascular
events. Ramipril reduced cardiovascular risk without increasing adverse effects
Keywords: adverse effects/angiotensin converting enzyme
inhibitors/angiotensin-converting enzyme
inhibitors/cardiovascular/cardiovascular events/cardiovascular
risk/death/diabetes/DISEASE/FAILURE/incidence/infarction/KIDNEY/MILD/
MORTALITY/myocardial/myocardial
infarction/outcome/PHYSICIAN/PHYSICIANS/primary/RACE/ramipril/random
ized/randomized trial/renal/risk/risk factor/serum/SERUM
CREATININE/stroke/treatment/trial/use/vascular/vascular disease
Berg, A.O., Allan, J.D., Frame, P., Homer, C.J., Johnson, M.S., Klein, J.D., Lieu, T.A.,
Orleans, C.T., Peipert, J.F., Pender, N.J., Siu, A.L., Teutsch, S.M. and Woolf,
S.H. (2002), Postmenopausal hormone replacement therapy for primary
prevention of chronic conditions: Recommendations and rationale. Annals of
Internal Medicine, 137 (10), 834-839.
Abstract: This statement summarizes the U.S. Preventive Services Task Force (USPSTF)
recommendations for use of hormone replacement therapy for the primary
prevention of chronic conditions in postmenopausal women and updates the
1996 USPSTF recommendations on this topic. The complete information on
which this statement is based, including evidence tables and references, is
available through the USPSTF Web site (www.preventiveservices.ahrq.gov) and
through the National Guideline Clearinghouse (www.guideline.gov) The
USPSTF reviewed the evidence on the use of postmenopausal hormone
replacement therapy and the following outcomes: cardiovascular disease,
including CHD and stroke; osteoporosis and fractures; thromboembolism;
dementia and cognitive function; breast, colon, ovarian, and endometrial cancer;
and cholecystitis. The USPSTF also reviewed evidence of the effects of hormone
replacement therapy on phytoestrogens and osteoporosis and cardiovascular
disease. The use of hormone replacement therapy for relieving active symptoms
of menopause, such as hot flashes, urogenital symptoms, and mood and sleep
disturbances, among others, is outside the scope of these USPSTF
recommendations, and literature on this topic was not reviewed. Sources for
estimates of benefits and harms cited in this Recommendation statement are
described in the summary of the evidence available from the Agency for
Healthcare Research and Quality
Keywords: BREAST-CANCER/cancer/cardiovascular/cardiovascular
disease/CHD/cognitive function/dementia/DISEASE/ESTROGEN-PROGESTIN
REPLACEMENT/fractures/HEART/hormone replacement
therapy/menopause/METAANALYSIS/MORTALITY/osteoporosis/PHYSICIA
N/PHYSICIANS/postmenopausal hormone replacement/postmenopausal
women/prevention/primary/primary
prevention/RACE/RISK/sleep/STROKE/symptoms/therapy/thromboembolism/U
S/use/WOMEN
Tonelli, M., Moye, L., Sacks, F.M., Kiberd, B. and Curhan, G. (2003), Pravastatin for
secondary prevention of cardiovascular events in persons with mild chronic renal
insufficiency. Annals of Internal Medicine, 138 (2), 98-104.
Abstract: Background: Cardiovascular disease is a common cause of morbidity and
death in persons with renal insufficiency. Although 3-hydroxy-3methylglutaryl
coenzyme A reductase inhibitors (statins) are effective for secondary prevention
of cardiovascular events in the general population, they have not been
specifically studied in chronic renal insufficiency. Objective: To determine
whether pravastatin is effective and safe for secondary prevention of
cardiovascular events in persons with chronic renal insufficiency. Design: Post
hoc subgroup analysis of a randomized, double-blind, placebo- controlled trial.
Setting: The Cholesterol and Recurrent Events (CARE) study, a randomized trial
of pravastatin versus placebo in 4159 participants with previous myocardial
infarction and total plasma cholesterol levels less than 6.21 mmol/L (130 mg/dL or
untreated total cholesterol concentrations >200 mg/dL were included. The
median duration of follow-up after the first MI was 3.3 years. Medical record
review was used to collect information on cardiovascular risk factors.
Computerized pharmacy records were used to assess antihyperlipidemic drug use
during the first 6 months after hospitalization. RESULTS: Compared with 1263
subjects who did not receive lipid-lowering drug treatment, 373 subjects who
received statins had a lower risk of recurrent coronary events (relative risk [RR]
0.59; 95% Cl 0.39 to 0.89), stroke (RR 0.82; 95% Cl 0.35 to 1.95),
atherosclerotic cardiovascular mortality (RR 0.49; 95% Cl 0.21 to 1.13), and any
atherosclerotic cardiovascular event (RR 0.63; 95% Cl 0.40 to 0.98). Among 320
subjects who used non-statin drug therapies, the RRs were 0.66 (95% Cl 0.45 to
0.97) for recurrent coronary events, 0.95 (95% Cl 0.46 to 1.95) for stroke, 0.68
(95% Cl 0.35 to 1.32) for cardiovascular mortality, and 0.77 (95% Cl 0.53 to
1.11) for any atherosclerotic cardiovascular event, compared with untreated
hyperlipidemic patients. CONCLUSIONS: In this study of MI survivors, the use
of lipid-lowering drug therapies after hospitalization was associated with a
reduced risk of cardiovascular events. These results emphasize the importance of
lipid-lowering drug treatment in patients with hyperlipidemia who survive a first
MI
Keywords: cardiovascular/cardiovascular event/cardiovascular events/cardiovascular
mortality/cardiovascular risk/cardiovascular risk factors/cholesterol/clinical
practice/coronary heart disease/DEATH/disease/drug/drugs/heart/heart
disease/hospital/hospitalization/hydroxymethylglutaryl coenzyme
A/hyperlipidemia/infarction/ISCHEMIC-HEART-DISEASE/lipid
lowering/lipid-lowering/METAANALYSIS/MORTALITY/myocardial/myocardi
al
infarction/Netherlands/pharmacy/prevention/randomized/REDUCTION/relative
risk/review/RISK/risk factors/secondary/secondary
prevention/SERUM-CHOLESTEROL/statins/stroke/treatment/TREATMENT
ADHERENCE/TRIALS/use/WOMEN
McKenney, J.M. (2003), Potential nontraditional applications of statins. Annals of
Pharmacotherapy, 37 (7-8), 1063-1071.
Abstract: OBJECTIVE: To review the current evidence for use of
hydroxymethylglutaryl coenzyme A reductase inhibitors (statins) in
nontraditional lipid-related applications, including acute coronary syndromes,
peripheral arterial disease, stroke, and renal disease, and to describe ongoing
trials evaluating the role of statins in these conditions. DATA SOURCES:
Clinical literature was identified by a MEDLINE search (1990-November 2002)
using 1 of the following search terms: acute coronary syndrome(s), angina
pectoris, atherosclerosis, atorvastatin, clinical trials, diabetes mellitus, end-stage
renal disease, fluvastatin, lovastatin, myocardial infarction, peripheral arterial
disease, pravastatin, simvastatin, statins, and stroke. Treatment guidelines issued
by professional and governmental organizations, such as the American Diabetes
Association, American Heart Association, National Cholesterol Education
Program, National Kidney Foundation, and National Stroke Foundation, were
reviewed. STUDY SELECTION AND DATA EXTRACTION: Articles
identified from the data sources were included if they pertained to the conditions
described in the objectives and provided unique information concerning use of
statins. DATA SYNTHESIS: Substantial evidence exists for the use of statins in
acute coronary syndromes. Meta-analyses of data from major clinical trials
indicate that statins prevent first and recurrent stroke, and large-scale trials are
underway to evaluate the efficacy of statins in this setting. Accumulating
evidence suggests that statins may be beneficial in reducing the morbidity and
mortality associated with peripheral arterial disease and end-stage renal disease,
and results from ongoing trials may confirm these benefits. Statins may also have
a future role in amelioration of other conditions associated with atherosclerosis,
such as diabetes mellitus. CONCLUSIONS: A large body of evidence supports
the evaluation of statins in clinical settings beyond primary and secondary
prevention of morbidity and mortality associated with coronary atherosclerosis
Keywords: acute/ACUTE CORONARY SYNDROMES/acute coronary
syndromes/angina/angina pectoris/arterial/arterial
disease/atherosclerosis/ATHEROSCLEROSIS
PROGRESSION/atorvastatin/AVERAGE CHOLESTEROL
LEVELS/benefits/clinical trials/diabetes/diabetes mellitus/disease/end-stage
renal
disease/evaluation/fluvastatin/guidelines/HEART-DISEASE/hydroxymethylglut
aryl coenzyme A/infarction/morbidity/morbidity and
mortality/mortality/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/organizations/peripheral arterial
disease/PERIPHERAL
ARTERIAL-DISEASE/pravastatin/prevention/primary/primary and secondary
prevention/RANDOMIZED CONTROLLED TRIAL/recurrent stroke/renal/renal
disease/RENAL- TRANSPLANT
PATIENTS/results/review/SCANDINAVIAN-SIMVASTATIN-SURVIVAL/sec
ondary/secondary prevention/SELECTION/simvastatin/ST- SEGMENT
ELEVATION/statins/stroke/trials/USA/use
Carroll, C.A., Coen, M.M. and Piepho, R.W. (2003), Economic impact of ramipril on
hospitalization of high-risk cardiovascular patients. Annals of
Pharmacotherapy, 37 (3), 327-331.
Abstract: OBJECTIVE: To estimate differences in direct costs attributable to avoided
hospitalizations. and procedures during the years of the HOPE (Heart Outcomes
Prevention Evaluation). study after the cost of treatment with ramipril or
alternative angiotensin- converting enzyme inhibitor therapy was taken into
account. METHODS: A decision analytical model was developed to estimate the.
economic impact of reductions in hospitalizations and/or procedures both at
annual increments and over the first 4 years of the HOPE study. The analysis
compared the number of cardiovascular events per endpoint per year in the..
intervention and placebo group with hospitalization and procedural costs. Cost
data were derived from the literature and inflated,to the appropriate index year
using the consumer- price index. RESULTS: For approximately 9000 patients
studied, the gross estimated savings in direct costs for 297 events avoided were
more than $5 million over 4 years. After the cost of treatment was,deducted for
both groups, the. net estimated savings were $871000 over 4 years.
CONCLUSIONS: The results demonstrate that the use of ramipril provides
cost-effective treatment for high-risk cardiovascular patients with an ejection
fraction >40%
Keywords: AIRE/angiotensin/angiotensin converting enzyme
inhibitor/cardiovascular/cardiovascular disease/cardiovascular
events/cost/COST-EFFECTIVENESS/costs/EVENTS/HEART-FAILURE/high
risk/hospitalization/INHIBITOR/LEFT-VENTRICULAR
DYSFUNCTION/MYOCARDIAL-
INFARCTION/ramipril/results/STROKE/SURVIVAL/therapy/treatment/USA/u
se
Skurnik, Y.D., Tchemiak, A., Edlan, K. and Sthoeger, Z. (2003), Ticlopidine-induced
cholestatic hepatitis. Annals of Pharmacotherapy, 37 (3), 371-375.
Abstract: OBJECTIVE: To report 2 cases of ticlopidine-induced cholestatic hepatitis,
investigate its mechanism, and compare the observed main characteristics with
those of the published cases. CASE SUMMARIES: Two patients developed
prolonged cholestatic hepatitis after receiving ticlopidine following percutaneous
coronary angioplasty, with complete remission during the follow-up period.
T-cell stimulation by therapeutic concentration of ticlopidine was demonstrated
in vitro in the patients, but not in healthy controls. DISCUSSION: Cholestatic
hepatitis is a rare complication of the antiplatelet agent ticlopidine; several cases
have been reported but few in the English literature. Our patients developed
jaundice following treatment with ticlopidine and showed the clinical and
laboratory characteristics of cholestatic hepatitis, which resolved after
discontinuation of the drug. Hepatitis may develop weeks after discontinuation of
the drug and may run a prolonged course, but complete remission was observed
in all reported cases. An objective causality assessment revealed that the adverse
drug event was probably related to the use of ticlopidine. The mechanisms of this
ticlopidine-induced cholestasis are unclear. Immune mechanisms may be
involved in the drug's hepatotoxicity, as suggested by the T-cell stimulation
study reported here. CONCLUSIONS: Cholestatic hepatitis is a rare adverse
effect of ticlopidine that may be immune mediated. Patients receiving the drug
should be monitored with liver function tests along with complete blood cell
counts. This complication will be observed even less often in the future as
ticlopidine is being replaced by the newer antiplatelet agent clopidogrel
Keywords:
angioplasty/antiplatelet/APLASTIC-ANEMIA/ASPIRIN/cholestasis/cholestatic/
cholestatic hepatitis/CLOPIDOGREL/complication/coronary
angioplasty/drug/hepatitis/HEPATOTOXICITY/IMMUNE-RESPONSE/Israel/ja
undice/mechanisms/PREVENTION/stimulation/STROKE/ticlopidine/treatment/
TRIAL/USA/use
Albunyan, M. (1993), Binswanger-Disease - the King-Khalid-University-Hospital
Experience. Annals of Saudi Medicine, 13 (5), 429-431.
Abstract: Two hundred and twenty-one Saudi patients admitted for stroke in King
Khalid University Hospital between 1982 and 1987 were evaluated clinically and
by laboratory and radiological investigations. Twelve patients were found to
have leukoaraiosis on brain CT and a clinical picture compatible with
Binswanger disease (subcortical arteriosclerotic encephalopathy). Arterial
hypertension was present in all cases, seizure disorders in 25%, and dementia in
83%. The features of these cases are compared with similar cases reported from
other places. The importance of control of hypertension in prevention of
Binswanger disease is emphasized
AlShammari, S.A., Khoja, T.A. and AlMaatouq, M.A. (1996), The prevalence of obesity
among Saudi males in the Riyadh region. Annals of Saudi Medicine, 16 (3),
269-273.
Abstract: Attendees of 15 health centers in urban and rural areas in the Riyadh region
were screened for obesity during May and June 1994. Systemic selection yielded
1580 Saudi males for analysis. The mean age was 33.6 +/- 13.5 years and body
mass index (BMI) was 26.9 +/- 5.7 kg/m(2). Only 36.6% of subjects were their
ideal weight (BMI 40 kg/m(2)). Middle age, lower education and
joblessness predicted a higher risk for obesity. Patients living in rural areas had
greater BMIs than those living in urban areas (P 120 (OR 1.19, 95% Cl 1.02-1.40, p 70% or occlusion) was found in 20% of the patients. Of
the total, 12% were reviewed in the out-patient clinic following which no action
was taken, 2% had angiography but no surgery, while 5% had angiography and
surgery. 1% were lost to follow-up. The mean delay from scan to operation was
36 days. Conclusion: Fast track scanning has led to early detection of surgically
relevant carotid lesions and avoidance of delay in surgical intervention. It is an
efficient and cost-effective practice
Keywords: age/carotid/carotid duplex scanning/carotid
stenosis/CVA/detection/disease/district general hospital/duplex/duplex
scanning/ENDARTERECTOMY/ENGLAND/hospital/MANAGEMENT/outco
me/review/stenosis/STROKE/stroke prevention/surgery/TIA/transient ischaemic
attack
Qayumi, A.K., Jamieson, W.R.E. and Poostizadeh, A. (1991), Effects of
Platelet-Activating-Factor Antagonist Cv-3988 in Preservation of Heart and
Lung for Transplantation. Annals of Thoracic Surgery, 52 (4), 1026-1032.
Abstract: The preservation of heart and lung for transplantation remains a major concern
in extended ischemic intervals. This experiment evaluated the effect of high
molecular weight deferoxamine and a platelet-activating factor antagonist
(CV-3988) in ischemic reperfused tissue. Heart-lung transplantation was
performed in a swine model after 4 hours 45 minutes of ischemia. Animals were
divided into three groups. Group A was a control without pharmacological
intervention. In group B, high molecular weight deferoxamine, 50 mg/kg, was
used, and in group C, platelet- activating factor antagonist CV-3988, 10 mg/kg,
was used. The results of functional variables (cardiac index, stroke index, lung
water, oxygen and carbon dioxide tensions, alveolar- arterial gradient, and
alveolar-arterial ratio) demonstrated superior heart and lung function for groups
B and C compared with the control group. These alterations of heart and lung
function were significantly less (p 0.99)
were similar in aspirin users and nonaspirin users. We found no significant
difference between blood product requirements for the two groups. Similarly, we
found no significant difference in the incidence of the secondary outcomes.
Conclusions. Preoperative aspirin did not increase bleeding-related
complications, mortality rate, or other morbidities in patients who had off-pump
coronary artery operation. (C) 2003 by The Society of Thoracic Surgeons
Keywords: ANTIPLATELET
THERAPY/aspirin/bleeding/bypass/complications/coronary artery
bypass/DIPYRIDAMOLE/DISEASE/England/IMMEDIATE
POSTOPERATIVE ASPIRIN/in-hospital
mortality/incidence/infarction/intensive care/morbidity/MORTALITY/mortality
rate/myocardial/myocardial infarction/NEW-YORK/outcome/outcome
measures/outcomes/postoperative/PREVENTION/primary/REEXPLORATION/
risks/secondary/stroke/SURGERY/therapy/TRIAL/USA/use/VEIN-GRAFT
PATENCY
Albert, A.A., Beller, C.J., Walter, J.A., Arnrich, B., Rosendahl, U.P., Priss, H. and
Ennker, J. (2003), Preoperative high leukocyte count: A novel risk factor for
stroke after cardiac surgery. Annals of Thoracic Surgery, 75 (5), 1550-1557.
Abstract: Background. Stroke after cardiac surgery is a devastating complication. The
relationship between white blood cell count (WBC) and perioperative
cerebrovascular accident (CVA) has not been investigated. An effort was made
to identify how preoperative WBC may relate to CVA development during or
after cardiac surgery. Methods. Prospective data were collected from 7,483
patients who underwent coronary artery bypass grafting or valvular surgery or
both. WBC was determined preoperatively and postoperatively. Differentiation
of WBC was examined only preoperatively. Results. There were a total of 125
CVAs (10 transient ischemic attacks [TIAs], 115 strokes). WBC was
significantly higher preoperatively and directly postoperatively in patients with
stroke. Qualitative changes in preoperative WBC were also found in these
patients (chi(2); p 240
mg/dl, HDL cholesterol 180 mg/dl, fibrinogen > 450
mg/dl, hematocrit > 45 %, hypertension, diabetes mellitus, cigarette smoking,
familial ischemic events, previous ischemic CVD, ischemic cardiac disease,
embolic cardiopathy. In males with ischemic stroke the most frequent risk factors
were: hypertension (43 %), fibrinogen > 450 mg/dl (37.9 %), diabetes mellitus.
cigarette smoking and previous ischemic CVD (25.8 %). in females with
ischemic stroke a clear prevalence of hypertension (69.8 %), ischemic
cardiopathy and previous ischemic CVD (47 %) and diabetes mellitus (41.5 %)
were observed. In males with RIA hypertension (50 %) and cigarette smoking
(38 %). Females with RIA presented a high prevalence of reduced HDL
cholesterol, lower than 35 mg/dl (77.7 %), hypertension (63.6 %) and ischemic
cardiopathy (54.5 %). The results indicate that there are no highly significant
differences between the data reported by other authors on the most important
acute ischemic CVD risk factors in Italy and elsewhere. Arterial hypertension
and diabetes mellitus are the most important risk factors of cerebral ischemic
events in both sexes. The diffusion of cigarette smoking among women in the
last thirty years must be taken into consideration. Although it does not represent
a risk factor for elderly women today, it may do in the future. Therefore,
antismoking campaigns must be more decisive and targeted at both sexes
Keywords: cerebrovascular disease/cholesterol/diabetes
mellitus/elderly/fibrinogen/HIGH-DENSITY-LIPOPROTEIN/hypertension/INT
ERNAL/ischemic stroke/prevention/reversible ischemic attack/risk
factors/secondary prevention/smoking/STROKE/stroke/triglycerides
Cozzolino, D., Salvatore, T. and Torella, R. (1996), Diabetic non ketotic hyperosmolar
state: A special care in aged patients. Archives of Gerontology and Geriatrics,
245-253.
Abstract: The hyperosmolar hyperglycemic nonketotic state (HHNS) is an acute
metabolic complication occurring characteristically in elderly type-2 diabetic
patients. It may account for 10 up to 47 % of cases of severe hyperglycemia with
or without ketoacidosis. Many factors associated with advanced age may explain
the predilection of both elderly subjects in general and older diabetics in
particular to develop hyperosmolar coma, including reduced glomerular filtration
rate and elevated renal threshold for glucose [which fall to correct hyperglycemia
by osmotic diuresis), lack of thirst appropriate to the state of hydratation and
some iatrogenic factors. In HHNS the age of the patients is the best known
prognostic indicator. The increased mortality rate in the elderly diabetics depends
on the severity of precipitating acute diseases (gastrointestinal hemorrhage.
cardiovascular accident, pneumonia, pancreatitis, etc.], but the frequent
compromises of the hemodynamic state and renal function of aged subjects
substantially contributes. However, the role of erroneous management is not
negligible and difficulties may be encountered in conciliating correction of
metabolic disorder with treatment of precipitating illness. Insulin. water and
electrolytes are the most important therapeutical tools for the treatment of
hyperglycemic emergencies. In HHNS, the aggressive fluid replacement with
isotonic or hypotonic NaCl solutions have first priority. Such a type of strategy is
difficult to perform in patients suffering from cerebral stroke (which needs of
anti-edema therapy) or congestive heart failure (necessitating to avoid fluid
excess). According to the literary data, in our experience these two precipitating
factors are frequent causes of death. We outline the validity of prefixed protocols
of management; on the other hand, we think that the pathophysiological
understanding of HHNS in the single patient is essential to decide the proper
corrections and to permit a successful outcome. The primary way aiming at
diminishing mortality by HHNS is its prevention; it is fundamental to warrant an
appropriate fluid intake and to utilize with caution some drugs (thiazides.
steroids, phenytoin, etc.) in aged diabetics, especially when nephropathic or
unable, or living in nursing homes
Keywords: ACUTE STROKE/aged/CEREBRAL EDEMA/COMA/diabetes
mellitus/diseases/elderly/GLUCOSE/heart/HYPERGLYCEMIA/hyperosmolar
hyperglycemic nonketotic
state/INSULIN/KETOACIDOSIS/mortality/PRESSURE/prevention/RABBITS/s
everity/stroke/THERAPY/treatment
Alletto, M., Burgio, A., Fulco, G., Paradiso, R., Piangiamore, M. and Vancheri, F.
(1996), A marked increase of ischemic stroke incidence between 1980 and 1994
in S Caterina, Sicily. Archives of Gerontology and Geriatrics, 167-172.
Abstract: Stroke death rates have been declining for some decades in most of the
industrialized countries. It is not clear, whether this has been associated with a
decrease in stroke incidence. We studied temporal trends in stroke incidence in a
rural community in Sicily, during two periods 1980-84 and 1990-94. There was a
total of 231 patients (120 of them women). The diagnosis of stroke was based on
the clinical evaluation and CT scan since 1982 and onward. There were 109
ischemic strokes (51 women) mean age 72.7 years, in 1980-84 period; 122
ischemic strokes (69 women) mean age 75.1, in 1990-94 period. Cardiovascular
risk factor rates did not change in the two periods considered. The relative annual
stroke incidence rate increased 37.0 %; (2.7 in 1980-84 to 3.7/1000 inhabitants in
1990-94, p = 0.016). In the population older than 65 years, the same parameter
increased by 21.1 % between the two periods; (16.1 in 1980-84 to 19.5/1000
inhabitants in 1990-94, not significant). This increase was due mainly to a 45.3
% significant relative increase in women, from 7.5 to 11.0/1000 inhabitants (p =
0.039). These findings suggest a need of the reconsideration of effective
strategics for the prevention of stroke
Keywords: absolute stroke incidence/CT/DECLINING
INCIDENCE/INTERNAL/ischemic
stroke/MEN/MORTALITY/prevention/relative stroke incidence/stroke/TRENDS
Acanfora, D., Trojano, L., Iannuzzi, G.L., Furgi, G., Picone, C., Rengo, C., Abete, P.
and Rengo, F. (1996), The brain in congestive heart failure. Archives of
Gerontology and Geriatrics, 23 (3), 247-256.
Abstract: In the present paper we discuss two issues about relationships between
congestive heart failure and the brain. First, major acute cerebrovascular events
are very frequent among elderly people, but stroke does not appear io be
frequently associated with congestive heart failure. Second, some cardiovascular
conditions may determine progressive damage of cerebral tissue, with
consequent impairment of cognitive functions. The association of cognitive
impairment and cardiovascular diseases may dramatically increase morbility and
mortality risks in the elderly. Recent studies seem to show that hypotension and
congestive heart failure are risk factors for dementia in elderly people. In view of
this data, an Italian multicentric study on congestive heart failure in hospitalized
elderly patients (CHF Italian Study I) included a brief screening of cognitive
abilities (MMSE)I The presence of congestive heart failure induced a significant
decrease of MMSE scores: mean MMSE score after statistical adjustment for the
other variables was about one point lower in patients with congestive heart
failure respect to elderly patients affected by heart disease but without congestive
heart failure. A novel multicentric study (CHF Italian Study II) has been
performed to identify cognitive functions more specifically impaired during
congestive heart failure in the elderly. Preliminary data relative to 385 patients,
confined that congestive heart failure may induce a generalized impairment of
cognitive functions. These data have relevant implications because they
demonstrate that a multidisciplinary approach is necessary in these patients, both
for prevention and rehabilitation therapy. Copyright (C) 1996 Elsevier Science
Ireland Ltd
Keywords: acute/ALZHEIMERS-DISEASE/brain/cardiovascular
diseases/CARE/cerebral/CEREBRAL
BLOOD-FLOW/cerebrovascular/cognitive function/cognitive
impairment/COGNITIVE PERFORMANCE/congestive heart
failure/dementia/diseases/elderly/heart/heart failure/HYPERTENSIVE
PATIENTS/LEUKO-ARAIOSIS/MINI-MENTAL-STATE/MMSE/mortality/N
ORMS/POPULATION/prevention/rehabilitation/risk/risk factors/SENILE
DEMENTIA/stroke/SURVIVAL/therapy
Vasishta, S., Toor, F., Johansen, A. and Hasan, M. (2001), Stroke prevention in atrial
fibrillation: physicians' attitudes to anticoagulation in older people. Archives of
Gerontology and Geriatrics, 33 (3), 219-226.
Abstract: The increased prevalence of atrial fibrillation (AF) in older people contributes
to an increased risk of stroke. Although clear guidelines exist, there is
considerable variation in physicians' approaches to the selection of patients
appropriate for warfarin treatment as stroke prevention. We compared attitudes
to the anticoagulation of elderly patients with AF, in a postal study of
geriatricians and specialist physicians (general physicians with specialist
interests in Cardiology, Gastroenterology, Diabetes and Endocrinology,
Nephrology and Neurology). A structured questionnaire was mailed to all 108
consultant physicians and geriatricians in South East Wales. This explored their
attitude to their patients' age and comorbidity when considering the benefits and
risks of warfarin prophylaxis for AF. About 25/30 geriatricians (83%) and 43/78
specialist physicians (55%) responded; an overall response rate of 63%. About
94% of the respondents agreed that patients aged over 75 with atrial fibrillation
were at a greater risk of stroke than younger patients. About 68% considered
warfarin related bleeds more likely in this age group, despite which most thought
that the benefits of warfarin outweighed the risks. In people aged above 75, only
13/25 (52%) geriatricians and 17/43 (40%) specialist physicians viewed lone AF
(AF with no underlying risk factor) as an indication for anticoagulation. When
considering the use of warfarin, geriatricians' appeared more likely to be
influenced by coexisting problems such as disability, falls, cerebrovascular
disease and limited life expectancy. Only a history of falls (96% geriatricians vs.
86% specialist physicians) and cerebrovascular disease (79% geriatricians vs.
51% specialist physicians) had a significant influence on prescribing practice (P
2 mg of hemoglobin per gram of stool) were detected in 11%
and values greater than 4 mg of hemoglobin per gram of stool were found in 8%,
Mean (+/-SD) values were more for those randomly assigned to receive
combined therapy (1.7+/-3.3 mg of hemoglobin per gram of stool vs
adjusted-dose warfarin therapy, 1.0+/-1.9 mg/g; P=.003), The 54 nonrandomized
patients with low risk of stroke receiving aspirin alone had a mean (+/-SD)
HemoQuant value of 0.8+/-0.7 mg of hemoglobin per gram of stool 1 month
after entry in the study. Conclusions: Abnormal levels of fecal hemoglobin
excretion were common in elderly patients with high risk of atrial fibrillation 1
month after randomization to prophylactic antithrombotic therapy. Combined
warfarin and aspirin therapy was associated with greater fecal hemoglobin
excretion than standard warfarin therapy, suggesting the potential for increased
gastrointestinal hemorrhage
Keywords: aspirin/atrial fibrillation/clinical
trials/elderly/fibrillation/hemorrhage/PREDICTION/prophylaxis/risk/stroke/trial
s/warfarin
[Anon]. (1997), The efficacy of aspirin in patients with atrial fibrillation - Analysis of
pooled data from 3 randomized trials. Archives of Internal Medicine, 157 (11),
1237-1240.
Abstract: Background: Atrial fibrillation (AF) is associated with an increased risk of
stroke. Six randomized studies of the use of oral anticoagulation therapy have
demonstrated that the relative risk of stroke is decreased by approximately 68%.
Three of these studies also compared aspirin with placebo use in a double-blind
design. We pooled individual patient data from these 3 studies. Objectives: To
determine if there were subgroups of patients who were particularly responsive
to aspirin use and to determine the efficacy of aspirin compared with placebo use
in the broad spectrum of patients with AF. Methods: There were 1985
patient-years assigned to the aspirin and 1867 patient-years assigned to the
placebo groups in the analysis. The daily dose of aspirin was 75 mg in the Atrial
Fibrillation, Aspirin, Anticoagulation Study, 325 mg in the Stroke Prevention in
Atrial Fibrillation 1 Study, and 300 mg in the European Atrial Fibrillation Trial.
The European Atrial Fibrillation Trial was a secondary prevention trial, while the
other 2 were primary prevention studies. The primary end point in this analysis
was ischemic stroke. Results: At the time of randomization, the patients' mean
age was 70 years and the mean blood pressure was 145/83 mm Hg. Sixty-two
percent of patients were male, 46% had a history of hypertension, 35% had a
previous transient ischemic attack or stroke, and 19% had intermittent AF.
Although aspirin use seemed particularly effective in younger patients and in
those with hypertension in the Stroke Prevention in Atrial Fibrillation 1 Study,
this was not the case in the other studies. No other subgroups particularly
responsive to aspirin therapy were identified. When patients from all the studies
were combined, the relative risk reduction with aspirin therapy was 21% (95%
confidence interval, 0%-38%; P=.05). Conclusions: A subgroup of patients with
AF that has a particularly large reduction in stroke incidence from aspirin
therapy was not convincingly identified. The data from the combined analysis of
these 3 randomized trials suggest a small effect of aspirin use in preventing
stroke in patients with AF
Keywords: AF/age/anticoagulation/aspirin/atrial fibrillation/blood
pressure/design/fibrillation/history/hypertension/incidence/ischemic/ischemic
stroke/oral anticoagulation/PREVENTION/primary
prevention/randomized/randomized trials/relative risk/risk/secondary
prevention/STROKE/therapy/transient/transient ischemic
attack/trials/WARFARIN
Crouse, J.R., Byington, R.P., Hoen, H.M. and Furberg, C.D. (1997), Reductase inhibitor
monotherapy and stroke prevention. Archives of Internal Medicine, 157 (12),
1305-1310.
Abstract: Background: Epidemiologic evidence and meta-analyses of data from early
clinical trials suggest that lowering the levels of cholesterol does not reduce the
events of stroke. These analyses have not included more recent clinical trials
using reductase inhibitors. Objective: To conduct a meta-analysis of the effect of
reducing cholesterol levels on stroke in all reported clinical trials of primary (n=4)
and secondary (n=8) prevention of coronary heart disease that used reductase
inhibitor monotherapy and provided information on incident stroke. Results:
Analysis of combined data from primary and secondary prevention trials showed
a highly statistically significant reduction of stroke associated with the use of
reductase inhibitor monotherapy (27% reduction in stroke; P=.001). Analysis of
secondary prevention trials alone disclosed a similar statistically significant
effect (32% reduction in stroke; P=.001). A smaller nonsignificant reduction in
stroke was noted in the primary prevention trials (15% reduction in stroke;
P=.48). Conclusions: Reductase inhibitors now in use for lowering cholesterol
levels are more potent and have fewer side effects than the cholesterol- lowering
agents previously available. They appear to reduce stroke, most notably in
patients with prevalent coronary artery disease, which may be partly due to the
effects of lowering the levels of cholesterol on the progression and plaque
stability of extracranial care tid atherosclerosis or the marked reduction of
incident coronary heart disease associated with treatment
Keywords: ARTERY
DISEASE/atherosclerosis/BLOOD-PRESSURE/CARDIOVASCULAR
EVENTS/CAROTID ATHEROSCLEROSIS/cholesterol/CLINICAL
EVENTS/clinical trials/coronary artery disease/coronary heart
disease/CORONARY HEART-DISEASE/EASTERN
FINLAND/heart/INTERVENTION
TRIAL/meta-analysis/MYOCARDIAL-INFARCTION/plaque/prevention/primar
y prevention/secondary prevention/SERUM-CHOLESTEROL
LEVELS/stroke/stroke prevention/treatment/trials
Whittle, J., Wickenheiser, L. and Venditti, L.N. (1997), Is warfarin underused in the
treatment of elderly persons with atrial fibrillation? Archives of Internal
Medicine, 157 (4), 441-445.
Abstract: Background: Several randomized clinical trials have shown that among
patients with atrial fibrillation, warfarin sodium use protects against stroke.
Recently, experts have voiced concern about possible underuse of warfarin by
practicing physicians. Few studies, however, have quantitated the amount of
warfarin underuse. Methods: We randomly sampled 65 Medicare beneficiaries
discharged alive from each of 5 small Pennsylvania hospitals between July 1,
1993, and June 30, 1994, with a discharge diagnosis code for atrial fibrillation.
Trained abstractors verified that atrial fibrillation was present at some time
during the hospitalization, determined the presence of contraindications to
anticoagulation, and identified warfarin or aspirin use at discharge for each
patient. An internist used implicit criteria to identify the reason for warfarin
nonuse in patients who had none of the explicit contraindications to warfarin and
did not receive it. Results: Of 322 charts reviewed, 48 patients were not in atrial
fibrillation during the hospitalization, 79 had contraindications to warfarin use,
21 either died or were transferred to another hospital, and 2 were admitted with a
complication of warfarin. Of the 172 remaining patients, 76 (44%) underwent
anticoagulation. On implicit review of the 96 patients who did not undergo
anticoagulation, the internist judged that warfarin would not have been
appropriate in 54. After excluding those patient's, 76 (64%) of the remaining 118
patients underwent anticoagulation. Patients not receiving warfarin were slightly
older (81.6 vs 78.3 years old), but this was not statistically significant after
stratifying by hospital. Rates of warfarin use at the 5 hospitals varied widely
(32%, 57%, 79%, 82%, 94%; P1 to 75 years old) compared with a younger control group (between 60
and 69 years) and to assess the quality of anticoagulant control and incidence of
hemorrhagic complications in those patients who recently commenced receiving
warfarin therapy (first year of therapy). Patients and Methods: In this
retrospective follow-up study, anticoagulant control and the incidence of
hemorrhagic complications and stroke were assessed in an elderly population (>
75 years old) compared with a younger control group (between 60 and 69 years),
all with atrial fibrillation(target international normalized ratio [INR] 2.5) and
attending a hospital outpatient anticoagulant clinic. Results: A total of 328
patients were studied over a 21-month period. There were 204 patients in the
control group providing 288 patient-years of follow-up and 124 patients in the
elderly group providing 170 patient-years of follow-up. The percentage of INR
results in the target range was not statistically significantly different between the
elderly and control groups (71.5% vs 66.1%) and the occurrences of incidences
of INR greater than 7 were 4.2% in the control group and 4.7% in the elderly
group (P=.96). The incidences of major hemorrhage were 2.8% per year in the
elderly group and 2.9% per year in the control group (P=.96); overall incidence
was 2.8% (95% confidence interval, 1.3%-4.4%). One hundred one of the 328
patients studied commenced warfarin therapy during or within 3 months of the
start of the study. In this induction group, 62.1% of INRs were within the target
range compared with 70.9% of INRs in patients who had been receiving warfarin
therapy for more than 3 months at the start of the study (P=.002). The incidences
of INR greater than 7 and major hemorrhage were 7.9% per year and 6.9% per
year, respectively, in the cohort who recently began warfarin therapy compared
with 3.4% per year and 1.7% per year in the group who were receiving warfarin
therapy for more than 3 months. Conclusion: While it was impossible to consider
any selection bias at the level of referral to the clinic, these findings suggest that
the elderly population attending our anticoagulant clinic did not have poorer
anticoagulant control or an increased incidence of hemorrhage while receiving
warfarin therapy
Keywords: anticoagulant/anticoagulation/ARCH/atrial
fibrillation/CHICAGO/complications/control/elderly/elderly
patients/fibrillation/hemorrhage/hospital/incidence/incidences/INR/international
normalized ratio/population/risk/sodium/stroke/STROKE
PREVENTION/THERAPY/TRIAL/WARFARIN
Seshadri, S., Wolf, P.A., Beiser, A., Vasan, R.S., Wilson, P.W.F., Kase, C.S.,
Kelly-Hayes, M., Kannel, W.B. and D'Agostino, R.B. (2001), Elevated midlife
blood pressure increases stroke risk in elderly persons - The framingham study.
Archives of Internal Medicine, 161 (19), 2343-2350.
Abstract: Background: Stroke risk predictions are traditionally based on current blood
pressure (13P). The potential impact of a subject's past BP experience
(antecedent BP) is unknown. We assessed the incremental impact of antecedent
BP on the risk of ischemic stroke. Methods: A total of 5197 stroke-free subjects
(2330 men) in the community-based Framingham Study cohort were enrolled
from September 29, 1948, to April 25, 1953, and followed up to December 31,
1998. We determined the 10-year risk of completed initial ischemic stroke for
60-, 70-, and 80- year-old subjects as a function of their current BP (at baseline),
recent antecedent BP (average of readings at biennial examinations 1-9 years
before baseline), and remote antecedent BP (average at biennial examinations
10-19 years earlier), with adjustment for smoking and diabetes mellitus. Models
incorporating antecedent BP were also adjusted for baseline BP. The effect of
each BP component (systolic 13P, diastolic BP, and pulse pressure) was assessed
separately. Results: Four hundred ninety-one ischemic strokes (209 in men) were
observed in eligible subjects. The antecedent BP influenced the 10-year stroke
risk at the age of 60 years (relative risk per SD increment of recent antecedent
systolic BP: women, 1.68 [95% confidence interval, 1.25-2.25]; and men, 1.92
[95% confidence interval, 1.39-2.66]) and at the age of 70 years (relative risk per
SD increment of recent antecedent systolic BP: women, 1.66 [95% confidence
interval, 1.28-2.14]; and men, 1.30 [95% confidence interval, 0.97-1.75]). This
effect was evident for recent and remote antecedent BP, consistent in
hypertensive and nonhypertensive subjects, and demonstrable for all BP
components. Conclusions: Antecedent BP contributes to the future risk of
ischemic stroke. Optimal prevention of late-life stroke will likely require control
of midlife BP
Keywords: age/ARCH/blood
pressure/CARDIOVASCULAR-DISEASE/CHICAGO/COHORT/control/diabet
es/diabetes
mellitus/elderly/HEART-DISEASE/HYPERTENSION/ischemic/ischemic
stroke/men/MORTALITY/prevention/PROFILE/pulse pressure/REGRESSION
DILUTION/relative risk/risk/smoking/stroke/TRENDS/women
McCormick, D., Gurwitz, J.H., Goldberg, R.J., Becker, R., Tate, J.P., Elwell, A. and
Radford, M.J. (2001), Prevalence and quality of warfarin use for patients with
atrial fibrillation in the long-term care setting. Archives of Internal Medicine, 161
(20), 2458-2463.
Abstract: Background: Evidence-based clinical practice guidelines recommend the use
of warfarin sodium for stroke prevention in most patients with atrial fibrillation
(AF) who do not have risk factors for hemorrhagic complications, irrespective of
age. Methods: The medical records of all residents of a convenience sample of
long-term care facilities in Connecticut (n=21) were reviewed. The percentages
of all patients with AF (AF patients) and ideal candidates for warfarin therapy (ie,
AF patients with no risk factors for hemorrhage) who received warfarin were
determined; for patients receiving warfarin, the percentage of days spent in the
therapeutic range of international normalized ratio (INR) values (2.0-3.0) was
also assessed. The relationship between receipt of warfarin and the presence of
stroke and bleeding risk factors was assessed in multivariate models. Results:
Atrial fibrillation was present in 429 (17%) of the 2587 long-term care residents.
Overall, 42% of AF patients were receiving warfarin. However, only 44 (53%) of
83 ideal candidates were receiving this therapy. In residents who received
warfarin therapy, the therapeutic range of INR values was maintained only 51%
of the time. The odds of receiving warfarin in the study sample decreased with
increasing number of risk factors for bleeding and increased (nonsignificant
trend) with increasing number of stroke risk factors present. Conclusions: Atrial
fibrillation is very common among residents of long-term care facilities. Even
among apparently ideal candidates, warfarin therapy is underused for stroke
prevention in patients with AF. Prescribing decisions and monitoring related to
warfarin therapy in the long-term care setting warrant improvement
Keywords: AF/age/ANTITHROMBOTIC THERAPY/ARCH/atrial
fibrillation/bleeding/CHICAGO/clinical
practice/COMPLICATIONS/ELDERLY
PATIENTS/fibrillation/GUIDELINES/hemorrhage/INR/international normalized
ratio/medical/monitoring/NATIONAL PATTERNS/ORAL
ANTICOAGULANT-THERAPY/PHYSICIAN ATTITUDES/practice
guidelines/prevention/risk/risk
factors/RISK-FACTORS/sodium/stroke/STROKE
PREVENTION/therapy/UNDERUTILIZATION/use/warfarin/warfarin sodium
Qureshi, A.I., Suri, M.F.K., Guterman, L.R. and Hopkins, L.N. (2001), Ineffective
secondary prevention in survivors of cardiovascular events in the US population
- Report from the Third National Health and Nutrition Examination Survey.
Archives of Internal Medicine, 161 (13), 1621-1628.
Abstract: Background: Survivors of myocardial infarction (MI) or stroke are at high risk
for subsequent cardiovascular events. There is limited assessment of the
effectiveness of risk factor modification through current secondary preventive
strategies in the US population. We determined the adequacy of risk factor
modification in 1252 survivors of MI, stroke, or both in a nationally
representative sample of US adults and identified factors related to inadequate
control of risk factors. Methods: The adequacy of control for hypertension,
diabetes mellitus, cigarette smoking, alcohol use, and hypercholesterolemia was
assessed by personal interview, blood pressure measurements, and serum
glycosylated hemoglobin and cholesterol levels in 17752 US adults who
participated in the Third National Health and Nutrition Examination Survey
between 1988 and 1994. We also evaluated the role of potentially related factors,
including age, sex, race/ethnicity, educational attainment, socioeconomic status,
and medical insurance status using multivariate logistic regression analysis.
Results: Of 738 known hypertensive persons, hypertension was uncontrolled in
388 (53%). Previously undiagnosed hypertension was detected in 138 others
(11%). Of 289 diabetic persons, serum glucose control was inadequate in 141. Of
1252 survivors, 225 (18%) were currently smoking, and heavy alcohol use was
observed in 56 persons. Hypercholesterolemia was poorly controlled in 185
(46%) of 405 persons with known hypercholesterolemia. Undetected
hypercholesterolemia was observed in 160 persons (13%). In the multivariate
analysis, high-risk profiles were more likely to be observed in persons aged 46 to
65 years, women, and African Americans. Conclusions: High prevalence of
inadequate secondary prevention was found in a subset of the US population at
highest risk for stroke and MI. Considerable efforts are required to effectively
implement risk factor modification strategies after MI or stroke, particularly in
middle-aged persons, African Americans, and women
Keywords: adults/African Americans/age/aged/alcohol/ARCH/ARTERY
DISEASE/blood pressure/cardiovascular/cardiovascular
events/CHICAGO/cholesterol/CHOLESTEROL-EDUCATION-PROGRAM/cig
arette smoking/control/CORONARY HEART-DISEASE/diabetes/diabetes
mellitus/DRUG PROJECT/FOLLOW-UP/glucose/hemoglobin/high
risk/hypercholesterolemia/hypertension/infarction/medical/multivariate
analysis/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/population/prevalence/prevention/ris
k/risk factor/risk factors/RISK- FACTORS/secondary/secondary
prevention/serum/sex/smoking/SMOKING CESSATION/socioeconomic
status/status/STROKE/UNITED- STATES ADULTS/use/women
Koffman, D.M., Bazzarre, T., Mosca, L., Redberg, R., Schmid, T. and Wattigney, W.A.
(2001), An evaluation of choose to move 1999 - An American Heart Association
physical activity program for women. Archives of Internal Medicine, 161 (18),
2193-2199.
Abstract: Background: Rates of physical inactivity and poor nutrition, which are 2 of the
most important modifiable risk factors for cardiovascular disease in women, are
substantial. Even so, studies of interventions designed to improve lifestyle
behaviors in women have been limited and often confined to particular
geographical areas. Objective: To evaluate the effect of Choose to Move on
increasing women's physical activity, improving their knowledge of heart disease
and stroke, and improving their nutrition. Participants and Methods: A
prospective, nonrandomized, 12-week educational intervention designed by the
American Heart Association for women across the United States. Participants
received a welcome kit and manual with weekly information about how to
manage cardiovascular disease risk factors and how to build a support system for
lifestyle change. Women (N = 23171) aged 25 years or older were recruited by
direct mail, the media, health care providers, and other means. Follow-up
evaluations were returned from 6389 women at 2 weeks, 5338 at 4 weeks, 4209
at 8 weeks, 3916 at 10 weeks, and 3775 at 12 weeks. Participants self- reported
their physical activity, diet, and knowledge about heart disease, stroke, and
related symptoms. Results: Ninety percent of the participants were white and
56% were aged between 35 and 54 years. Among the participants who completed
the week 12 follow-up evaluation, the percentage who reported being active (at
least moderate exercise greater than or equal to5 times per week or > 21/2 hours
per week for the past 1 to 6 months) increased from 32% at baseline to 67% at
the program's end (P=.001). Participants currently limiting excess calories or fat
increased from 72% to 91% at week 10 follow-up evaluation (P=.001). The
proportion correctly identifying heart disease as the leading cause of death
increased from 84% to 91% at week 10 follow-up evaluation (P 30 days but 80%) classified by Doppler criteria was twice
as frequent in men (2.4%) as in women (1.1%). Age and sex were found to be
particularly strong and independent predictors of asymptomatic carotid artery
disease. Accordingly, separate logistic regression models were developed for
both men and women in the elderly (65-79 years) and middle-aged (50-64 years)
groups. Systolic blood pressure turned out to be the only attribute with
independent significance in all subgroups examined. Cigarette smoking, recorded
as pack-years, emerged as the leading risk factor of carotid atherosclerosis in
men. Serum fibrinogen levels were found to be highly indicative of carotid artery
disease in elderly men and women. For apolipoprotein B predictive significance
was observed in the middle-aged populations, whereas apolipoprotein A-I had a
protective effect in elderly women. Diabetes mellitus completed the risk factor
profile for elderly men. In summary, the relation between cardiovascular risk
factors and asymptomatic carotid artery disease showed a dynamic dependence
on sex and age. These findings may help to improve the efficacy of risk
prediction in the general population and facilitate well-directed preventive
measures
Keywords: APOLIPOPROTEIN-B/B-MODE
ULTRASOUND/BLOOD-PRESSURE/CAROTID
ATHEROSCLEROSIS/CIGARETTE- SMOKING/DENSITY-LIPOPROTEIN
CHOLESTEROL/DISEASE/EPIDEMIOLOGY/HEART/MYOCARDIAL-INF
ARCTION/PLASMA-FIBRINOGEN/RISK
FACTORS/STENOSIS/STROKE/ULTRASOUND
Benderly, M., Graff, E., ReicherReiss, H., Behar, S., Brunner, D. and Goldbourt, U.
(1996), Fibrinogen is a predictor of mortality in coronary heart disease patients.
Arteriosclerosis Thrombosis and Vascular Biology, 16 (3), 351-356.
Abstract: Results of epidemiological studies have indicated that fibrinogen is an
important primary cardiovascular risk factor. The role of fibrinogen as a
predictor of mortality in coronary heart disease (CHD) patients is unclear. We
investigated the association between fibrinogen and mortality in a large cohort of
CHD patients screened for participation in a secondary prevention clinical trial.
Of the total investigated, 3092 men who were not included in the trial and for
whom vital status was known were followed up for a mean period of 3.2 years.
In 54.4% of the 111 men who died, mortality was attributed to CHD. Mean
baseline plasma fibrinogen levels were 29.4 mg/dL higher in patients who died
than in the survivors. All-cause and CHD mortality rates increased with
increasing fibrinogen levels. This relationship was also demonstrated within
categories of the primary variables predicting mortality in these patients. The
contribution of fibrinogen to CHD and all-cause mortality was assessed by
multivariate analysis adjusting for age, CHD severity, and comorbidity. Risks of
CHD and all-cause mortality for patients in the highest fibrinogen tertile were
1.67 and 1.75, respectively, relative to patients in the lowest tertile, and an
increase of about 1 SD of plasma fibrinogen level (75 mg/dL) was found to
increase risk of CHD and all-cause mortality by 29% and 31%, respectively.
These results indicate clearly that fibrinogen level is associated with significantly
increased mortality in CHD patients. Implementation of a standardized
measuring method is required to allow assessment of risk in CHD patients on the
basis of fibrinogen levels
Keywords: comorbidity/coronary disease/coronary heart
disease/DENSITY-LIPOPROTEIN
CHOLESTEROL/fibrinogen/heart/HEMOSTATIC
FUNCTION/mortality/MYOCARDIAL-INFARCTION/prevention/prospective
study/risk/risk factors/RISK-FACTORS/secondary prevention/severity/STROKE
Schmidt, H., Schmidt, R., Niederkorn, K., Horner, S., Becsagh, P., Reinhart, B.,
Schumacher, M., Weinrauch, V. and Kostner, G.M. (1998), beta-fibrinogen gene
polymorphism (C-148 -> T) is associated with carotid atherosclerosis - Results
of the Austrian Stroke Prevention Study. Arteriosclerosis Thrombosis and
Vascular Biology, 18 (3), 487-492.
Abstract: Polymorphisms at the beta-fibrinogen locus have been shown to be associated
with plasma concentration of fibrinogen and coronary heart disease. The effect of
the genetic heterogeneity of fibrinogen on carotid atherosclerosis has not been
determined so far. We examined the: influence of the C-148 --> T polymorphism
on carotid disease in a large cohort of middle- aged to elderly subjects without
evidence of neuropsychiatric disease. This polymorphism is located close to the
consensus sequence of the interleukin-6 element and may represent a functional
sequence variant. The genotype of 399 randomly selected, neurologically
asymptomatic individuals, aged 45 to 75 years, was determined by denaturing
gradient gel electrophoresis. Carotid atherosclerosis was assessed by color-
coded duplex scanning and was graded on a five-point scale ranging from 0
(=normal) to 5 (=complete luminal obstruction). The C/C, C/T, and T/T
genotypes were noted in 226 (56.6%), 148 (37.1%), and 25 (6.3%) individuals,
respectively. The T/T genotype soup demonstrated higher grades of carotid
atherosclerosis than did the C/C and C/T genotypes (P=.003). Logistic regression
analysis created a model of independent predictors of carotid atherosclerosis that
included apolipoprotein B (odds ratio [OR], 1.17/10 mg/dL), age (OR, 2.46/10
years), lifetime tobacco consumption (OR, 1.03/1000 g), presence of the
beta-fibrinogen promoter T/T genotype (OR, 6.17), plasma fibrinogen
concentration (OR, 1.05/10 mg/dL), and cardiac disease (OR, 1.80). These data
suggest that the beta- fibrinogen promoter T/T148 genotype represents a genetic
risk factor for carotid atherosclerosis in the middle-aged to elderly
Keywords: age/aged/ARTERY
ATHEROSCLEROSIS/atherosclerosis/CARDIOVASCULAR
RISK-FACTORS/carotid/carotid arteries/consensus/coronary heart
disease/DETERMINANTS/duplex
scanning/elderly/fibrinogen/genetic/genetics/heart/ISCHEMIC-HEART-DISEAS
E/LOCUS/MYOCARDIAL-INFARCTION/PLASMA-
FIBRINOGEN/POPULATION/predictors/PREVALENCE/risk/tobacco/VARIA
BILITY
Schmidt, R., Schmidt, H., Fazekas, F., Kapeller, P., Roob, G., Lechner, A., Kostner,
G.M. and Hartung, H.P. (2000), MRI cerebral white matter lesions and
paraoxonase PON1 polymorphisms - Three-year follow-up of the Austrian stroke
prevention study. Arteriosclerosis Thrombosis and Vascular Biology, 20 (7),
1811-1816.
Abstract: White matter lesions (WMLs) on magnetic resonance imaging (MRI) scans of
older persons are thought to be caused by cerebral small-vessel disease. As they
progress, these brain abnormalities frequently result in cognitive decline and gait
disturbances, and their predictors are incompletely understood. Genetic risk
factors have been implicated but remain undetermined so far. We examined
whether 2 common polymorphisms of the paraoxonase (PON1) gene leading to a
methionine (M allele)-leucine (L allele) interchange at position 54 and an
arginine (B allele)-glutamine (A allele) interchange at position 191 are associated
with the presence and progression of WMLs. We studied 264
community-dwelling subjects without neuropsychiatric disease (ages 44 to 75
years). All underwent vascular risk factor assessment, brain MRI, and PON1
genotyping. MRI scanning was repeated after 3 years. The extent and number of
WMLs were recorded by 3 independent readers. Progression of WMLs was
assessed by direct scan comparison. The final rating relied on the majority
judgment of the 3 readers. The LL, LM, and MM genotypes were noted in 111
(42.0%), 118 (44.7%), and 35 (13.3%) subjects, respectively; the AA, AB, and
BE genotypes occurred in 146 (55.3%), 98 (37.1%), and 20 (7.8%) individuals,
respectively. Carriers of the LL genotype showed a nonsignificant trend toward
more extensive WMLs and more frequently demonstrated lesion progression
over the 3-year observation period (P = 0.03), The polymorphism at position 191
had no effect. Logistic regression analysis yielded age (odds ratio, 1.08/y),
diastolic blood pressure (odds ratio, 1.05/mm Hg), and LL paraoxonase genotype
(odds ratio, 2.65) to be significant predictors of WML progression. These data
suggest that the LL PON1 genotype at position 54 influences the extent and
progression of WMLs in elderly subjects
Keywords: ABNORMALITIES/age/ATHEROSCLEROSIS/Austria/blood
pressure/brain/CARDIOVASCULAR-DISEASE/cerebral/cerebral small-vessel
disease/CORONARY HEART-DISEASE/diastolic blood
pressure/disease/elderly/GENE/genetics/HYPERINTENSITIES/LOW-DENSIT
Y-LIPOPROTEIN/magnetic resonance imaging/MRI/OLDER
ADULTS/paraoxonase/predictors/prevention/risk/risk factor/risk factors/RISK-
FACTORS/SERUM PARAOXONASE/stroke/stroke prevention/vascular/white
matter/white matter lesions
Leppala, J.M., Virtamo, J., Fogelholm, R., Huttunen, J.K., Albanes, D., Taylor, P.R. and
Heinonen, O.P. (2000), Controlled trial of alpha-tocopherol and beta-carotene
supplements on stroke incidence and mortality in male smokers. Arteriosclerosis
Thrombosis and Vascular Biology, 20 (1), 230-235.
Abstract: Observational data suggest that diets rich in fruits and vegetables and with
high serum levels of antioxidants are associated with decreased incidence and
mortality of stroke. We studied the effects of alpha-tocopherol and beta-carotene
supplementation. The incidence and mortality of stroke were examined in 28 519
male cigarette smokers aged 50 to 69 years without history of stroke who
participated in the Alpha- Tocopherol, Beta-Carotene Cancer Prevention Study
(ATBC Study). The daily supplementation was 50 mg alpha-tocopherol, 20 mg
beta-carotene, bath, or placebo. The median follow-up was 6.0 years. A total of
1057 men suffered from incident stroke: 85 men had subarachnoid hemorrhage;
112, intracerebral hemorrhage; 807, cerebral infarction; and 53, unspecified
stroke. Deaths due to stroke within 3 months numbered 38, 50, 65, and 7,
respectively (total 160). alpha-Tocopherol supplementation increased the risk of
subarachnoid hemorrhage 50% (95% CI - 3% to 132%, P = 0.07) but decreased
that of cerebral infarction 14% (95% CI -25% to - 1%, P = 0.03), whereas
beta-carotene supplementation increased the risk of intracerebral hemorrhage
62% (95% CI 10% to 136%, P = 0.01). alpha-Tocopherol supplementation also
increased the risk of fatal subarachnoid hemorrhage 181% (95% CI 37% to
479%, P = 0.01). The overall net effects of either supplementation on the
incidence and mortality from total stroke were nonsignificant. alpha- Tocopherol
supplementation increases the risk of fatal hemorrhagic strokes but prevents
cerebral infarction. The effects may be due to the antiplatelet actions of alpha-
tocopherol. beta-Carotene supplementation increases the risk of intracerebral
hemorrhage, but no obvious mechanism is available
Keywords: aged/alpha-tocopherol/antioxidants/antiplatelet/ATHEROSCLEROTIC
PLAQUE/beta
carotene/beta-carotene/CARDIOVASCULAR-DISEASE/cerebral/cerebral
infarction/Finland/hemorrhage/history/incidence/infarction/intracerebral/intracer
ebral hemorrhage/LASER/MEN/mortality/PLASMA/PLATELET-
FUNCTION/risk/serum/stroke/stroke incidence/subarachnoid
hemorrhage/trial/VITAMIN-C
Durrington, P.N., Mackness, B. and Mackness, M.I. (2001), Paraoxonase and
atherosclerosis. Arteriosclerosis Thrombosis and Vascular Biology, 21 (4),
473-480.
Abstract: There is considerable evidence that the antioxidant activity of high density
lipoprotein (HDL) is largely due to the paraoxonase-1(PON1) located on it.
Experiments with transgenic PON1 knockout mice indicate the potential for
PON1 to protect against atherogenesis. This protective effect of HDL against low
density lipoprotein (LDL) lipid peroxidation is maintained longer than is the
protective effect of antioxidant vitamins and could thus be more important. There
is evidence that the genetic polymorphisms of PON1 least able to protect LDL
against lipid peroxidation are overrepresented in coronary heart disease,
particularly in association with diabetes. However, these polymorphisms explain
only part of the variation in serum PON1 activity; thus, a more critical test of the
hypothesis is likely to be whether low serum PON1 activity is associated with
coronary heart disease. Preliminary case-control evidence suggests that this is
indeed the case and, thus, that the quest for dietary and pharmacological means
of modifying serum PON1 activity may allow the oxidant model of
atherosclerosis to be tested in clinical trials
Keywords: ACUTE-PHASE RESPONSE/antioxidant/antioxidant
vitamins/APOLIPOPROTEIN-A-I/atherogenesis/atherosclerosis/AUSTRIAN
STROKE PREVENTION/BINDING CASSETTE
TRANSPORTER-1/CHOLESTERYL ESTER
TRANSFER/CHRONIC-RENAL-FAILURE/clinical trials/coronary heart
disease/CORONARY-ARTERY DISEASE/DEPENDENT
DIABETES-MELLITUS/diabetes/disease/England/genetic/GULF-WAR
VETERANS/HDL/heart/heart disease/high density lipoprotein/high density
lipoproteins/HIGH-DENSITY-LIPOPROTEIN/LDL/lipid peroxidation/low
density lipoprotein/paraoxonase/serum/trials/vitamins
Herrington, D.M., Vittinghoff, E., Howard, T.D., Major, D.A., Owen, J., Reboussin,
D.M., Bowden, D., Bittner, V., Simon, J.A., Grady, D. and Hulley, S.B. (2002),
Factor V Leiden, hormone replacement therapy, and risk of venous
thromboembolic events in women with coronary disease. Arteriosclerosis
Thrombosis and Vascular Biology, 22 (6), 1012-1017.
Abstract: Oral contraceptive use in women with factor V Leiden is associated with
increased rates of venous thromboembolic events (VTEs). However, the effects
of hormone replacement therapy (HRT) in postmenopausal women with factor V
Leiden are not known. A nested case-control study was conducted among
women with established coronary disease enrolled in 2 randomized clinical trials
of HRT, the Heart and Estrogen/Progestin Replacement Study (HERS) and the
Estrogen Replacement and Atherosclerosis (ERA) trial. The Leiden mutation
was present in 8 (16.7%) of 48 cases with VTE compared with only 7 (6.3%) of
112 controls (odds ratio [OR](Leiden) 3.3, 95% Cl 1.1 to 9.8; P=0.03). In women
without the factor V Leiden mutation, risk associated with HRT use was
significantly increased (ORHRT 3.7, 95% Cl 1.4 to 9.4; P5
such lesions), MRS showed relative reduction of NA peaks, Although no patient
was studied when acutely ill, prior neurologic involvement was related to
abnormal findings. Conclusion. MRI and MRS are helpful in the investigation of
cerebral complications of SLE, There are chronic changes which may be
ischemic in nature, Their precise cause, consequences, and prevention are current
challenges
Keywords: ACUTE
STROKE/ARTHRITIS/brain/cerebral/CHOLINE/complications/control/CRANI
AL COMPUTERIZED-TOMOGRAPHY/DISEASE/HIV-
INFECTION/INVIVO/ischemic/LESIONS/magnetic resonance
imaging/MANIFESTATIONS/METABOLITES/MR/MRI/NEUROPSYCHIAT
RIC LUPUS/prevention/white matter/women
Goodman, T.A., Merkel, P.A., Perlmutter, G., Doyle, M.K., Krane, S.M. and Polisson,
R.P. (1997), Heterotopic ossification in the setting of neuromuscular blockade.
Arthritis and Rheumatism, 40 (9), 1619-1627.
Abstract: Objective, Heterotopic ossification (HO) is a disorder characterized by the
formation of new bone in tissue that does not ossify under normal conditions, We
report a series of 6 cases in which HO occurred in the setting of adult respiratory
distress syndrome (ARDS). We wished to show that HO can occur after
neuromuscular blockade and that these cases might provide additional evidence
that HO is influenced by neural mechanisms, Methods, Cases of HO were
selected from the consultation services at the Massachusetts General Hospital
and the Brigham and Women's Hospital, Affected patients all had ARDS and had
been treated vith a neuromuscular blocking agent. Patients with a history of
stroke, burn, head trauma, spinal cord injury, or joint replacement were excluded
from this study, Results. Heterotopic bone appeared around large joints in a
pattern identical to that seen in patients with paralysis, traumatic brain injury,
severe burns, or trauma, New bone formation was self-limited over a period of
1-2 years, Alkaline phosphatase and technetium bone scan were sensitive ways
of detecting early disease and monitoring disease activity, Medical therapies had
limited benefit, Surgical excision of mature new bone appeared to be the only
definitive therapy. Conclusion. Neuromuscular blockade in the setting of ARDS
appears to be an important risk factor for the development of HO, The similarity
of these cases of HO occurring in patients with brain or spinal cord injury raises
the possibility that neural mechanisms may be important in the pathogenesis of
this disease. Whether the type of neuromuscular blocking agent and the duration
of use are important determinants of disease severity remains to be determined
Keywords:
ARTHRITIS/BONE-FORMATION/brain/development/DIFFERENTIATION/D
ISODIUM
ETIDRONATE/formation/FRUIT/GROWTH/history/INJURY/MYOSITIS-OSS
IFICANS/PREVENTION/risk/severity/spinal cord injury/stroke/therapy
Barnett, H.J.M. (1991), Clinical-Trials in Stroke Prevention.
Arzneimittel-Forschung/Drug Research, 41-1 (3A), 340-344.
Abstract: The randomized clinical trial has no satisfactory substitute in the evaluation of
preventive treatment for stroke-threatened patients, and is the gold standard also
in studies designed to test strategies which may reduce the impact of brain
damage after ischemic stroke has occurred. Stroke data banks and contemporary
non-randomized comparisons are imperfect or flawed as bench-marks against
which to judge treatments for these types of patients. Flaws in the design,
execution and analysis of randomized clinical trials have been eliminated
gradually over the past 35 years. On the basis of the existing trials in stroke
prevention it may be stated that anticoagulants are effective in patients with
non-rheumatic atrial fibrillation and after myocardial infarction. No other uses of
anticoagulants in preventing ischemic stroke have been proven. Acetylsalicylic
acid between 325-1300 mg/d will prevent stroke; lower doses have not been
proven of value. Ticlopidine is effective. Benefit for dipyridamole, suloctidil or
sulfinpyrazone has not been shown. Cerebral by-pass surgery has not been
shown to have any role in stroke prevention in arteriosclerotic cerebral vascular
disease. Carotid endarterectomy is still undergoing careful evaluation
Keywords: ASPIRIN/CAROTID
ENDARTERECTOMY/CEREBRAL/CEREBRAL-ISCHEMIA/CLINICAL
TRIALS/INTRACRANIAL ARTERIAL BYPASS/ISCHEMIA/ISCHEMIC
STROKE/PREVENTION/PROGRESSION/RANDOMIZED
TRIAL/RISK/SECONDARY PREVENTION/THROMBOEMBOLIC
STROKE/TICLOPIDINE
Laragh, J.H. (1993), The Renin System and New Understanding of the Complications of
Hypertension and Their Treatment. Arzneimittel-Forschung/Drug Research, 43-1
(2A), 247-254.
Abstract: The renin-angiotensin-aldosterone hormonal axis is the major long-term
servocontrol for regulation of both arterial blood pressure and sodium balance. It
supports normotension or hypertension via angiotensin vasoconstriction and
angiotensin plus aldosterone-induced renal sodium retention. Normally, in the
presence of hypertension or sodium-volume excess, plasma renin activity
promptly falls to zero. Accordingly, any renal secretion of renin in the face of
high blood pressure is abnormal. In established essential hypertension varying
degrees of abnormal plasma renin activity operate to cause or sustain the
hypertension; only very low plasma renin values reflect a normal renal response.
Human hypertensive disorders comprise a spectrum of abnormal plasma
renin-sodium volume products. High renin, intensely vasoconstricted,
hypovolemic forms (e.g., malignant, renovascular) are one extreme of the
spectrum, ''wet''-volume-excess low-renin forms are the other extreme (eg,
primary aldosteronism, low-renin essential hypertension). These varying, but
abnormal renin-sodium products are caused by a renal lesion in which a
subpopulation of ischemic nephrons hypersecretes renin and retains sodium
despite systemic hypertension and sodium excess. Thus, hypertensive patients
cannot suppress their renin secrection normally. The hypertension from this renal
lesion is correctable by agents that reduce renin secretion or block its effect (beta
blockade, CEI, renin inhibition, or angiotensin II antagonism). None of these
agents lower blood pressure after binephrectomy, verifying the renal origin of
renin in the cardiovascular control system. In essential hypertension, the plasma
renin level appears as a continuous variable associated with greater risk of
ischemic injury. With higher renin levels, vascular injury to heart, brain and
kidneys occurs in humans and is readily produced in animal models. Conversely,
patients with lower plasma renin values are protected from heart attack and
stroke despite even higher pressures and greater age. The near future holds
considerable potentials for the ultimate goal of prevention of cardiovascular
injury (heart attack and stroke), utilizing explicit strategies to contain
inappropriate plasma renin activity. In this light the modern evaluation of the
hypertensive patient includes a baseline plasma renin assay among ten important
tests. This accurate test reliably screens for curable forms of hypertension,
evaluates the risk of morbid events (i. e., heart attack) and guides more specific
drug therapies
Keywords: ALDOSTERONE/ALDOSTERONE
SYSTEM/ANGIOTENSIN/BLOCKADE/COMPLICATIONS/CONVERTING-
ENZYME-INHIBITOR/HEART
ATTACK/HYPERTENSION/MYOCARDIAL-INFARCTION/PRAZOSIN/RE
NIN/RENIN-MEDIATED/RENIN-SODIUM
RECIPROCALITY/RENINANGIOTENSIN
SYSTEM/SARALASIN/SECRETION/STROKE/VASCULAR DAMAGE
Heyden, S. (1988), Risk Factor Detection and Intervention in the Prevention of
Cardiovascular-Diseases - No Influence of Cholesterol Reduction on the Stroke
Rate and No Influence of Isolated Treatment of Hypertension on the Chd Rate.
Arztliche Laboratorium, 34 (12), 341-344
Keywords: COMMUNITY/FAMILY
Kieu, N.T.M., Yasugi, E., Lien, D.T.K., Anh, N.T.L., Do, T.T., Khoi, H.H., Kido, T.,
Kondo, K., Itakura, H., Van Chuyen, N., Yamamoto, S. and Oshima, M. (2000),
Serum fatty acids, lipoprotein(a) and apolipoprotein composition of rural,
suburban and urban populations in North Vietnam. Asia Pacific Journal of
Clinical Nutrition, 9 (2), 62-66.
Abstract: This study was conducted to investigate the concentrations of serum fatty acids,
lipoprotein(a) and apolipoprotein of three populations in North Vietnam: rural
area with low income (n = 101), suburban with average income (n = 97), and
urban with high income (n = 95). The results showed the suburban and urban
populations had higher fat intake than the rural. The fat intake in quality was
different in these three populations. The suburban had the highest consumption
of fatty foods rich in n-6 polyunsaturated fatty acid (PUFA). The rural consumed
more fatty foods rich in monounsaturated fatty acid (MUFA), but less fatty foods
rich in n-3 PUFA than the two other populations. The high index of
thrombogenicity (IT) of the Vietnamese diet may result from their low intake of
fish and vegetable oils. Risk factors for premature cardiovascular disease (CVD)
assessed by serum Lipoprotein(a) and apolipoprotein levels were not observed in
all three populations. However, coronary heart disease (CHD) and stroke are
problems that should be monitored because the increase of CVD morbidity has
been reported in Vietnamese people. From a nutritional point of view, the
increase of fish and vegetable oils consumption is necessary for the prevention of
CVD and CHD in these Vietnamese populations
Keywords: apolipoprotein/AUSTRALIA/cardiovascular/cardiovascular disease/coronary
heart disease/CORONARY HEART-DISEASE/diet/dietary pattern/fat
consumption/fatty acid/heart/heart
disease/lipoprotein(a)/morbidity/prevention/serum/stroke/urban/vegetable
McBurney, M.I. (2001), Candidate foods in the Asia-Pacific region for cardiovascular
protection: relevance of grains and grain-based foods to corollary heart disease.
Asia Pacific Journal of Clinical Nutrition, 10 (2), 123-127.
Abstract: This review elucidates the importance of healthy dietary and lifestyle habits to
reduce morbidity and mortality associated with coronary heart disease (CHD),
stroke and cardiovascular diseases. Given published evidence of the poor
compliance, increased cost, and decreased benefit/risk ratios of medical therapies,
individuals (and populations) are encouraged to adopt healthy life habits. The
three most atherogenic dietary risk factors are saturated fat, cholesterol and
obesity. Dietary patterns associated with the consumption of grains and grain
based foods predict risk of CHD independently of other life habits.
Epidemiological and intervention studies elucidating the strong protective
associations of grains, cereal fibers and anti-oxidant vitamins on CHD are
reviewed. In summary, the consumption of grains and grain-based cereals is
repeatedly associated with the ingestion of many nutrients, e.g., dietary fiber and
anti-oxidants, that alter energy balance and nutrient intakes to positively affect
cardiovascular health, especially when combined with healthy life habits
Keywords: ALPHA-TOCOPHEROL/antioxidant/antioxidant
vitamins/antioxidants/AUSTRALIA/BREAKFAST
CEREAL/cardiovascular/cardiovascular disease/cardiovascular
diseases/cardiovascular health/CAROTENE CANCER
PREVENTION/cereal/CHD/cholesterol/CHOLESTEROL-LOWERING
THERAPY/coronary heart disease/cost/dietary fiber/disease/diseases/EVENT
RATES/fiber/folic acid/health/heart/heart disease/homocysteine/intervention
studies/lifestyle/medical/MONICA PROJECT
POPULATIONS/morbidity/mortality/MYOCARDIAL-INFARCTION/obesity/P
LASMA HOMOCYST(E)INE/protection/review/risk/risk factors/RISK
REDUCTION/SERUM- CHOLESTEROL/stroke/vitamins
Newnham, J.P., Moss, T.J., Nitsos, I., Sloboda, D.M. and Challis, J.R. (2002), Nutrition
and the early origins of adult disease. Asia Pacific Journal of Clinical Nutrition,
11 S537-S542.
Abstract: There is now overwhelming evidence that much of our predisposition to adult
illness is determined by the time of birth. These diseases appear to result from
interactions between our genes, our intrauterine environment and our postnatal
lifestyle. Those at greatest risk are individuals in communities making a rapid
transition from lives of 'thrift' to a lives of 'plenty'. From a global perspective,
such origins of diabetes, coronary heart disease and stroke, should render
research in these fields as one of the highest priorities in human health care.
Prevention will be enhanced by elucidation of the mechanisms by which the
fetus is programmed by the mother for the life she expects it to live. At the
present time, there is evidence that fetal nutrition and premature exposure to
cortisol are effective intrauterine triggers, but a multitude of alternative pathways
require investigation. It is also likely that programming extends across
generations, and may involve the embryo and perhaps the oocyte. An oocyte that
becomes an adult human develops in the uterus of its grandmother, so further
research is required to describe the role of environments of grandmothers and
mothers in predisposing offspring to health or illness in adult life
Keywords: 11-BETA-HYDROXYSTEROID
DEHYDROGENASE/Australia/BLOOD-PRESSURE/cardiovascular
disease/coronary heart disease/diabetes/diabetes
mellitus/disease/diseases/EARLY ATHEROSCLEROTIC
LESIONS/environment/FETAL/fetus/genes/GLUCOCORTICOID
EXPOSURE/GROWTH-FACTOR (IGF)-I/health/health care/heart/heart
disease/human/INSULIN/LATE-GESTATION/LATER
LIFE/lifestyle/MATERNAL
HYPERCHOLESTEROLEMIA/mechanisms/nutrition/pregnancy/research/risk/s
troke/triggers
Serfatylacrosniere, C., Civeira, F., Lanzberg, A., Isaia, P., Berg, J., Janus, E.D., Smith,
M.P., Pritchard, P.H., Frohlich, J., Lees, R.S., Barnard, G.F., Ordovas, J.M. and
Schaefer, E.J. (1994), Homozygous Tangier-Disease and Cardiovascular-Disease.
Atherosclerosis, 107 (1), 85-98.
Abstract: Decreased levels of plasma high density lipoprotein (HDL) cholesterol have
been associated with premature cardiovascular disease (CVD). Tangier disease is
an autosomal co-dominant disorder in which homozygotes have a marked
deficiency of HDL cholesterol and apolipoprotein (ape) A-I levels (both .008, Fisher exact test). A
correlation exists between MCA(large-vessel) and conjunctival (small-vessel)
flow velocities. CAIM is a noninvasive quantitative technique that might
contribute to the identification of SCD patients at high risk of stroke. Small-
vessel vasculopathy might be an important pathological indicator and should be
further explored in a large-scale study. (Blood. 2001;97:3401-3404) (C) 2001 by
The American Society of Hematology
Keywords: ANEMIA/BLOOD/cerebral/cerebral
artery/CHILDREN/disease/Doppler/Doppler ultrasonography/high risk/middle
cerebral artery/RISK/sickle cell disease/STROKE/TCD/transcranial/transcranial
Doppler/transcranial Doppler ultrasonography/ultrasonography/vessels
Pegelow, C.H., Macklin, E.A., Moser, F.G., Wang, W.C., Bello, J.A., Miller, S.T.,
Vichinsky, E.P., Debaun, M.R., Guarini, L., Zimmerman, R.A., Younkin, D.P.,
Gallagher, D.M. and Kinney, T.R. (2002), Longitudinal changes in brain
magnetic resonance imaging findings in children with sickle cell disease. Blood,
99 (8), 3014-3018.
Abstract: Children with sickle cell anemia (HbSS) are at high risk for neurologically
overt cerebral infarcts associated with stroke and neurologically silent cerebral
infarcts correlated with neuropsychometric deficit. We used complete magnetic
resonance imaging (MRI) histories from 266 HbSS children, aged 6 through 19
years, who were enrolled in the Cooperative Study of Sickle Cell Disease
(CSSCD) to examine silent infarct prevalence, localization, recurrence, and
progression. We report a baseline prevalence of 21.8%, marginally higher than
previously reported due to improved imaging technologies. Although we
observed no overall sex difference in prevalence, most lesions in girls occurred
before age 6, whereas boys remained at risk until age 10. Silent infarcts were
significantly smaller and less likely to be found in the frontal or parietal cortex
than were infarcts associated with stroke. Children with silent infarct had an
increased incidence of new stroke (1.03/100 patient years) and new or more
extensive silent infarct (7.06/100 patient-years) relative to stroke incidence
among all children in our cohort (0.54/100 patient-years). Both events were
substantially less frequent than the risk of stroke recurrence among children not
provided chronic transfusion therapy. Although chronic transfusion is known to
decrease occurrence of new silent infarcts and strokes in children with elevated
cerebral arterial blood flow velocity, further study is required to determine its
risk-benefit ratio in children with silent infarct and normal velocities. Until safe
and effective preventive strategies against infarct recurrence are discovered, MRI
studies are best reserved for children with neurologic symptoms,
neuropsychometric deficits, or elevated cerebral artery velocities. (Blood.
2002;99: 3014-3018). (C) 2002 by The American Society of Hematology
Keywords: age/aged/ANEMIA/arterial/BLOOD/blood flow/brain/brain magnetic
resonance imaging/cerebral/cerebral artery/children/chronic/chronic
transfusion/disease/flow velocity/high
risk/imaging/incidence/INFARCTION/magnetic resonance
imaging/MRI/prevalence/PREVENTION/progression/recurrence/RECURRENT
STROKE/RISK/sex/sickle cell anemia/sickle cell disease/stroke/stroke
incidence/stroke recurrence/symptoms/therapy/TRANSCRANIAL DOPPLER
ULTRASONOGRAPHY/transfusion/TRANSFUSIONS
Shibata, J., Hasegawa, J., Siemens, H.J., Wolber, E., Dibbelt, L., Li, D.C., Katschinski,
D.M., Fandrey, J., Jelkmann, W., Gassmann, M., Wenger, R.H. and Wagner, K.F.
(2003), Hemostasis and coagulation at a hematocrit level of 0.85: functional
consequences of erythrocytosis. Blood, 101 (11), 4416-4422.
Abstract: We have generated a transgenic mouse line that reaches a hematocrit
concentration of 0.85 due to constitutive overexpression of human erythropoietin
in an oxygen-independent manner. Unexpectedly, this excessive erythrocytosis
did not lead to thrombembolic complications in all investigated organs at any age.
Thus, we investigated the mechanisms preventing thrombembolism in this mouse
model. Blood analysis revealed an age-dependent elevation of reticulocyte
numbers and a marked thrombocytopenia that matched. the reduced
megakaryocyte numbers in the bone marrow. However, platelet counts were not
different from wild-type controls, when calculations were based on the
distribution (eg, plasma) volume, thereby explaining why thrombopoietin levels
did not increase in transgenic mice. Nevertheless, bleeding time was significantly
in creased in transgenic animals. A longitudinal investigation using computerized
thromboelastography revealed that thrombus formation was reduced with
increasing age from 1 to 8 months in transgenic animals. We observed that
increasing erythrocyte concentrations inhibited profoundly and reversibly
thrombus formation and prolonged the time of clot development, most likely due
to mechanical interference of red blood, cells with clot-forming platelets,
Transgenic animals showed in-creased nitric oxide levels in the blood that could
inhibit vasoconstriction and platelet activation. Finally, we observed that
plasmatic coagulation activity in transgenic animals was significantly decreased.
Taken together, our findings suggest that prevention of thrombembolic disease in
these erythrocytotic transgenic mice was due to functional consequences inherent
to increased eryhrocyte concentrations and a reduction of plasmatic coagulation
activity, the cause of which remains to be elucidated. (C) 2003 by The American
Society of Hematology
Keywords: activation/age/ALTITUDE/bleeding/bleeding
time/BLOOD/coagulation/complications/CONGENITAL
HEART-DISEASE/development/disease/EXPRESSION/formation/GENE/Germ
any/hematocrit/human/mechanisms/MICE OVEREXPRESSING
ERYTHROPOIETIN/nitric oxide/NITRIC-OXIDE/platelet/platelet
activation/platelets/POLYCYTHEMIA/prevention/RISK/STROKE/thrombus/tra
nsgenic mice/USA
Lind, S.E., Pearce, L.A., Feinberg, W.M. and Bovill, E.G. (1999), Clinically significant
differences in the International Normalized Ratio measured with reagents of
different sensitivities. Blood Coagulation & Fibrinolysis, 10 (5), 215-227.
Abstract: `The International Normalized Ratio (INR) system was introduced a decade
ago as a way of standardizing the results of prothrombin time testing for patients
taking oral anticoagulants. A strong emphasis has been placed upon using
thromboplastin reagents that are very sensitive to the effects of oral
anticoagulants upon the prothrombin time [i.e. reagents with low International
Sensitivity Index (ISI)]. In order to assess how well the INR system functions as
currently used in clinical laboratories, we compared the INRs determined using
thromboplastins of differing ISIs in samples collected during a large clinical trial
of oral anticoagulation for atrial fibrillation (Stroke Prevention in Atrial
Fibrillation III trial). Frozen plasma was subjected to prothrombin time testing
using thromboplastins with ISIs ranging from 0.97 to 2.49. INRs were calculated
using machine-specific ISIs and Westgard's rules were followed to maintain
quality control. An unanticipated coagulometer failure allowed a determination
of the effect of machine recalibration upon the INR of control plasmas. The
correlation between each pair of INRs obtained from 1181 plasmas was high (>
0.9), but the differences between reagents were statistically different from zero
(P(I)/alcohol/alpha-tocopherol/antioxidants/ATHEROGENESIS/atheroscl
erosis/BRAIN/CALCIUM/cerebral/cerebral
hemorrhage/CONTRACTION/coronary
disease/disease/ENGLAND/ETHANOL-INDUCED
ELEVATION/hemorrhage/intracellular free Mg2+
([Mg2+](i))/MAGNESIUM/MG2+/muscle/NEURONAL
LOSS/prevention/pyrrolidine dithiocarbamate (PDTC)/RAPID
DEPLETION/RAT- BRAIN/serum/smooth/stroke/vascular
Dubois-Dauphin, M., Pfister, Y., Vallet, P.G. and Savioz, A. (2001), Prevention of
apoptotic neuronal death by controlling procaspases? A point of view. Brain
Research Reviews, 36 (2-3), 196-203.
Abstract: In various animal models of neurodegenerative diseases the long-lasting
control of cell death by anti-apoptotic therapies is not successful. We present
here our view on the control of procaspase expression in a model of cerebral
stroke. We have investigated how Hu-Bcl-2 overexpression modifies cell death
protein activation in a model of cerebral ischemia induced by permanent middle
cerebral artery occlusion (MCAO). In wild type mice MCAO induced release of
cytochrome c from the mitochondria, and activation of caspases 9 and 3. In
parallel with caspases activation, procaspase 9 and procaspase 3 were,
respectively, increased and decreased. In Hu-Bcl-2 transgenic mice cytochrome c
release and caspases 9 and 3 activation were blocked. However procaspase 9
increased, like in wt mice, but procaspase 3 remained unchanged. By 2 weeks
after MCAO caspases were no longer blocked in Hu-Bcl-2 transgenic mice.
Procaspase 9 increase could represent a time bomb in Hu-Bcl-2 mice where
caspase 9 activation is blocked. Indeed, cellular accumulation of procaspase 9 is
a potentially harmful event able to overcome anti-apoptotic protection by Bcl-2
and threaten cells with rapid destruction. Through understanding of the upstream
regulation of procaspase 9, early targets for the pharmacological control of
apoptotic cell death may be revealed. (C) 2001 Elsevier Science B.V. All rights
reserved
Keywords:
activation/AMYOTROPHIC-LATERAL-SCLEROSIS/animal/apoptosis/Bcl-2/B
RAIN/caspase/CASPASE-9 ACTIVATION/CELL-DEATH/cerebral/cerebral
artery/cerebral
ischemia/control/CYTOCHROME-C/death/diseases/INTERLEUKIN-1-BETA
CONVERTING-ENZYME/ischemia/ISCHEMIC BRAIN
INJURY/MESSENGER-RNA/middle cerebral artery/middle cerebral artery
occlusion/MIDDLE CEREBRAL-ARTERY/NERVOUS-
SYSTEM/NETHERLANDS/protection/stroke/Switzerland/transgenic
mice/TRANSGENIC MOUSE MODEL
Shah, D., Azhar, M., Oakley, C.M., Cleland, J.G.F. and Nihoyannopoulos, P. (1994),
Natural-History of Secundum Atrial Septal-Defect in Adults After Medical Or
Surgical-Treatment - A Historical Prospective- Study. British Heart Journal, 71
(3), 224-227.
Abstract: Objective-To compare outcome in patients with medically treated secundum
atrial septal defect (ASD) first diagnosed after the age of 25 with the long-term
outcome in a similar group of patients after surgical closure. Design-A historical,
prospective, unrandomised study. Setting-A tertiary referral centre. Patients-All
patients with ASD followed up since 1955 who fulfilled the entry criteria and
had reached a current age of over 45 years-that is, 34 medical and 48 surgical
patients with a mean follow up of 25 years. Main outcome measures- Survival,
symptoms, and complications. Results-There was no difference in survival or
symptoms between the two groups and no difference in the incidence of new
arrhythmias, stroke or other embolic phenomena, or cardiac failure. No patient in
either group developed progressive pulmonary vascular disease.
Conclusion-Outcome in adults with ASD was not improved by surgical closure.
because progressive pulmonary vascular disease did not develop in any of these
patients its prevention is not a reason for advising closure of ASD in adults
Keywords:
adults/BRITISH/complications/ENGLAND/HEART/incidence/OLDER/preventi
on/stroke/vascular/vascular disease
Wilson, S.L. and Poulter, N.R. (2001), Cardiovascular risk: its assessment in clinical
practice. British Journal of Biomedical Science, 58 (4), 248-251.
Abstract: Cardiovascular disease is one of the major causes of mortality and morbidity in
Western industrialised countries. Many factors impact on the likelihood of an
individual suffering a stroke or heart attack. One of the greatest challenges facing
clinicians today is how best to identify those individuals at increased risk, to
prevent them becoming tomorrow's patients. Risk assessment tools can provide
useful frameworks to support the identification of individuals who may benefit
from therapeutic intervention: however, such tools should be used with care, as
they do not include all the factors that contribute to future disease risk, and they
are subject to an age bias. Nonetheless, they provide a systematic,
evidence-based approach to the delivery of preventative healthcare services
Keywords: age/BLOOD-PRESSURE/cardiovascular system/causes/clinical
practice/CORONARY HEART-DISEASE/disease/disease
risk/England/Framingham
equation/heart/HYPERTENSION/LONDON/MEDICINE/morbidity/mortality/P
REDICTION/PREVENTION/risk/risk assessment/risk factors/STROKE
King, D., Davies, K.N., Slee, A. and Silas, J.H. (1995), Atrial-Fibrillation in the Elderly
- Physicians Attitudes to Anticoagulation. British Journal of Clinical Practice,
49 (3), 123-125.
Abstract: The use of warfarin and aspirin for the primary prevention of stroke in elderly
patients with atrial fibrillation (AF) is controversial. To establish current practice
we circulated a questionnaire to 300 geriatricians (G) and 300 cardiologists (C).
The response rates were 47% G and 51% C. Most physicians prescribed warfarin
in AF associated with mitral stenosis (G vs C, 86% vs 89%, NS). Cardiologists
were more likely to prescribe warfarin in AF associated with dilated
cardiomyopathy (G vs C, 52% vs 86%, P0.001) in the practice where all patients received dosing through DSS. In the
practice where patients were randomized to either DSS or hospital dosing,
logistic regression showed a significant trend for improvement in intervention
patients which was not apparent in the hospital-dosed patients (P 1225 mg/week spread over at least three
doses) yielded an odds ratio of 3.05 (1.02 to 9.14, P= 0.047). There was no
evidence of an increased risk among subgroups defined by age, sex, Mood
pressure status, alcohol intake, smoking, and the presence or absence of previous
cardiovascular disease. Conclusions No increase in risk of intracerebral
haemorrhage was found among aspirin users overall or among those who took
low doses of the drug or other non-steroidal anti-inflammatory drugs. These data
provide evidence that doses of aspirin usually used for prophylaxis against
vascular disease produce no substantial increase in risk of intracerebral
haemorrhage
Keywords: age/alcohol/aspirin/Australia/BRITISH/cardiovascular/cardiovascular
disease/CEREBRAL-ISCHEMIA/COMMUNITY STROKE/computed
tomography/control/CONTROLLED
TRIAL/DISEASE/drugs/ENGLAND/HEMORRHAGE/hospitals/INFARCTION
/intracerebral
haemorrhage/PERTH/PREVENTION/primary/prophylaxis/risk/sex/smoking/stro
ke/vascular/vascular disease/WOMEN
Hingorani, A.D. and Vallance, P. (1999), A simple computer program for guiding
management of cardiovascular risk factors and prescribing. British Medical
Journal, 318 (7176), 101-105.
Abstract: Objective To describe, and to test against trial data, a simple and flexible
computer program for calculating cardiovascular risk in individual patients as an
aid to managing risk factors and prescribing drugs to lower cholesterol
concentration and blood pressure. Design Descriptive comparison of actual
cardiovascular risk in randomised controlled trials of cholesterol reduction with
risk predicted by a computer program based on the Framingham risk equation.
Comparison of the program's performance with that of tables and guidelines by
means of hypothetical case examples. Main outcome measures Average risk of
coronary heart disease and myocardial infarction. Results The computer program
accurately predicted baseline absolute risk in a UK population as well as the
relative and absolute reduction in risk from cholesterol lowering for primary
prevention of coronary heart disease. The program also allowed a more refined
estimate of absolute risk of coronary heart disease than some existing tables and
enabled the impact of prescribing decisions to be quantified and costed.
Conclusions This simple computer program to estimate individuals'
cardiovascular disease risk and display the benefits of intervention should help
clinicians and patients decide on the most effective packages of risk reduction
and identify those most likely to benefit from modulation of risk factors
Keywords: absolute risk/blood
pressure/BLOOD-PRESSURE/BRITISH/cardiovascular/cardiovascular
disease/cardiovascular risk/cardiovascular risk
factors/cholesterol/cholesterol-lowering/coronary heart disease/CORONARY
HEART-DISEASE/disease
risk/drugs/England/guidelines/heart/HYPERTENSION/infarction/myocardial/my
ocardial infarction/MYOCARDIAL-
INFARCTION/population/PRAVASTATIN/prevention/primary/PRIMARY
PREVENTION/PROFILE/risk/risk factors/STROKE/TABLE/trials
Meade, T.W. and Brennan, P.J. (2000), Determination of who may derive most benefit
from aspirin in primary prevention: subgroup results from a randomised
controlled trial. British Medical Journal, 321 (7252), 13-17.
Abstract: Objective To determine which groups of patients may derive particular benefit
or experience harm from the use of low dose aspirin for the primary prevention
of coronary heart disease. Design Randomised controlled trial. Setting 108 group
practices in the Medical Research Council's general practice research framework
who were taking part in the thrombosis prevention trial. Participants 5499 men
aged between 45 and 69 years at entry who were at increased risk of coronary
heart disease. Main outcome measures Myocardial infarction, coronary death,
and stroke. Results Aspirin reduced coronary events by 20%. This benefit,
mainly for non-fatal events, was significantly greater the lower the systolic blood
pressure at entry (interaction P = 0.0015), the relative risk at pressures 130 mm
Hg being 0.55 compared with 0.94 at pressures > 145 mm Hg. Aspirin also
reduced strokes at low but not high pressures, the relative risks being 0.41 and
1.42 (P = 0.006) respectively. The relative risk of all major cardiovascular
events-that is, the sum of coronary heart disease and stroke-was 0.59 at pressures
145 mm Hg (P = 0.0001).
Conclusion Even with the limitations of subgroup analyses the evidence suggests
that the benefit of low dose aspirin in primary prevention may occur mainly in
those with lower systolic blood pressures, although it is not clear even in these
men that the benefit outweighs the potential hazards. Men with higher pressures
may be exposed to the risks of bleeding while deriving no benefit through
reductions in coronary heart disease and stroke
Keywords: aged/aspirin/bleeding/blood pressure/BRITISH/cardiovascular/coronary
heart disease/death/disease/England/heart/heart
disease/HYPERTENSION/infarction/ISCHEMIC
HEART-DISEASE/LOW-DOSE
ASPIRIN/men/outcome/prevention/primary/primary prevention/relative
risk/RISK/SEVERITY/stroke/systolic blood pressure/thrombosis/use
Kalra, L., Yu, G., Perez, I., Lakhani, A. and Donaldson, N. (2000), Prospective cohort
study to determine if trial efficacy of anticoagulation for stroke prevention in
atrial fibrillation translates into clinical effectiveness. British Medical Journal,
320 (7244), 1236-1239.
Abstract: Objective To determine whether trial efficacy of prophylaxis with warfarin for
patients with atrial fibrillation at high risk of stroke translates into effectiveness
in clinical practice. Design Two year prospective cohort study. Setting District
general hospital. Participants 167 patients with atrial fibrillation and at high
stroke risk who were eligible for anticoagulation. Interventions Long term
anticoagulation with warfarin at adjusted doses to maintain an international
normalised ratio of 2.0-3.0. Main outcome measures Comparison of patient
characteristics, comorbidity, anticoagulation control, stroke rate, and
haemorrhagic complications with pooled data from five randomised controlled
trials. Results Patients in the study group were seven years older (95%
confidence interval 4 to 10) and comprised 33%, more women than patients in
the pooled trials. The inter national normalised ratio was in the target range for
61% of the time (range 37%- 85%), below for 26% of the time (range 8%-32%),
and above for 13% of the time (range 6%-26%). The time that patients in the
study group spent in the target range was significantly less than in the pooled
analysis. The incidence of stroke in the study group (2.0% per rear, 0.7% to 4.4%)
was comparable to that of patients receiving warfarin in pooled studies (1.4%,
0.8% to 2.3%). Per year the incidence of major (1.7% v 1.6%) and minor (5.4% v
9.2%) bleeding complications was also similar. Conclusion Rates of stroke and
major haemorrhage after anticoagulation in clinical practice were comparable to
those obtained from pooled data from randomised controlled studies for patients
with atrial fibrillation at high risk of stroke
Keywords: anticoagulation/ASPIRIN/atrial fibrillation/bleeding/BRITISH/clinical
practice/cohort
study/comorbidity/complications/control/England/fibrillation/haemorrhage/high
risk/hospital/incidence/outcome/prevention/prophylaxis/prospective cohort
study/risk/stroke/stroke prevention/trials/WARFARIN/women
Taylor, F.C., Cohen, H. and Ebrahim, S. (2001), Systematic review of long term
anticoagulation or antiplatelet treatment in patients with non-rheumatic atrial
fibrillation. British Medical Journal, 322 (7282), 321-326.
Abstract: Objective To examine the benefits and risks of long term anticoagulation
(warfarin) compared with antiplatelet treatment (aspirin/indoprofen) in patients
with non-rheumatic atrial fibrillation. Methods Meta-analysis of randomised
controlled trials from Cochrane library, Medline, Embase, Cinhal, and Sigle fr
am 1966 to December 1999. Odds ratios (95% confidence intervals) calculated to
estimate treatment effects. Outcome measures Fatal and non-fatal cardiovascular
events, reductions of which were classified as benefits. Fatal and major non-fatal
bleeding events classified as risks. Results No trials were found from before
1989. There were five randomised controlled trials published between 1989-99.
There were no significant differences in mortality between the two treatment
options (fixed effects model: odd ratio 0.14 (95% confidence interval 0.39 to
1.40) for stroke deaths; 0.86 (0.63 to 1.17) for vascular deaths). There was a
borderline significant difference in non-fatal stroke in favour of anticoagulation
(0.68 (0.46 to 0.99)); and 0.15 (0.50 to 1.13) after exclusion of one trial with
weak methodological design. A random effects model showed no significant
difference in combined fatal and non-fatal events (odds ratio 0.79 (0.61 to 1.02)),
There were more major bleeding events among patients on anticoagulation than
on antiplatelet treatment (odds ratio 1.45 (0.93 to 2.27)). One trial was stopped
prematurely after a significant difference in favour of anticoagulation was
observed, The only trial to show a significant difference in effect (favouring
anticoagulation) was methodologically weaker in design than the others.
Conclusions The heterogeneity between the trials and the limited data result in
considerable uncertainty about the value of long term anticoagulation compared
with antiplatelet treatment The risks of bleeding and the higher cost of
anticoagulation make it an even less convincing treatment option
Keywords: anticoagulation/antiplatelet/antiplatelet treatment/ANTITHROMBOTIC
THERAPY/ASPIRIN/atrial
fibrillation/BIAS/bleeding/BRITISH/cardiovascular/cardiovascular
events/cost/design/England/fibrillation/LONDON/METAANALYSIS/mortality/
non-rheumatic atrial fibrillation/nonrheumatic/review/SERVICE/stroke/stroke
deaths/STROKE
PREVENTION/THROMBOEMBOLISM/treatment/trial/TRIALS/vascular/WA
RFARIN
Cappuccio, F.P., Oakeshott, P., Strazzullo, P. and Kerry, S.M. (2002), Application of
Framingham risk estimates to ethnic minorities in United Kingdom and
implications for primary prevention of heart disease in general practice: cross
sectional population based study. British Medical Journal, 325 (7375),
1271-1274B.
Abstract: Objective To compare the 10 year risk of coronary heart disease (CHD), stroke,
and combined cardiovascular disease (CVD) estimated from the Framingham
equations. Design Population based cross sectional survey. Setting Nine general
practices in south London. Population 1386 men and women, age 40-59 years,
with no history of CVD (475 white people, 447 south Asian people, and 464
people of African origin), and a subgroup of 1069 without known diabetes, left
ventricular hypertrophy, peripheral vascular disease, renal impairment, or target
organ damage. Main outcome measures 10 year risk estimates. Results People of
African origin had the lowest 10 year risk estimate of CHD adjusted for age and
sex (7.0%, 95% confidence interval 6.5 to 7.5.) compared with white people
(8.8%, 8.2 to 9.5) and south Asians (9.2%, 8.6 to 9.9) and the highest estimated
risk of stroke (1.7% (1.5 to 1.9),1.4% (1.3 to 1.6),1.6% (1.5 to 1.8), respectively).
The estimate risk of combined CVD, however, was highest in south Asians
(12.5%, 11.6 to 13.4) compared with white people (11.9%, 11.0 to 12.7) and
people of African origin (10.5%, 9.7 to 11.2). In the subgroup of 1069, the
probability that a risk of CHD greater than or equal to 15% would identify risk of
combined CVD greater than or equal to 20% was 91% in white people and 81%
in both south Asians and people of African origin. The use of thresholds for risk
of CHD of 12% in south Asians and 10% in people of African origin would
increase the probability of identifying those at risk to 100% and 97%,
respectively. Conclusion Primary care doctors should use a lower threshold of
CHD risk when treating mild uncomplicated hypertension in people of African or
south Asian origin
Keywords:
age/BLOOD-PRESSURE/BRITISH/BRITISH-HYPERTENSION-SOCIETY/ca
rdiovascular/cardiovascular disease/CARDIOVASCULAR
RISK/CHD/CLINICAL-PRACTICE/coronary heart disease/CORONARY
RISK/diabetes/disease/England/EUROPEAN POPULATIONS/general
practice/GUIDELINES/HEALTH SURVEY/heart/heart
disease/history/hypertension/hypertrophy/left ventricular/left ventricular
hypertrophy/LONDON/MANAGEMENT/men/minorities/outcome/peripheral
vascular disease/population/population-based/prevention/primary/primary
prevention/renal/risk/sex/stroke/survey/United
Kingdom/use/VALIDATION/vascular/vascular disease/women
Marshall, T. and Rouse, A. (2002), Resource implications and health benefits of primary
prevention strategies for cardiovascular disease in people aged 30 to 74:
mathematical modelling study. British Medical Journal, 325 (7357), 197-199.
Abstract: Objective To develop a model to determine the resource costs and health
benefits of implementing guidelines for the prevention of cardiovascular disease
in primary care, Design Modelling of data from six strategies for prevention of
cardiovascular disease. Strategies incorporated two ways of identifying patients
for assessment: traditional (assessment of all adults) and novel (preselection of
patients For assessment using a prior estimate of their risk of cardiovascular
disease). Three treatment strategies were modelled in conjunction with each
identification strategy. Setting England. Subjects Patients aged 30 to 74 eligible
for primary prevention strategies for cardiovascular disease who were selected
from a hypothetical population of 2000. Main outcome measures Resource costs
of assessing eligible adults, providing treatment and follow up and number of
cardiovascular events this should prevent. Results Novel strategies prevented
more cardiovascular disease, at lower cost, than traditional strategies. Some
treatment strategies prevent more cardiovascular disease with fewer resources
than others. The findings were robust across a range of different assumptions
about workload. Conclusion Preselecting patients for assessment makes better
use of staff time than assessing all adults. Treating many patients with low cost
drugs is more efficient than prescribing a few patients intensive
antihypertensives and statins. Authors of guidelines should model workload
implications and health benefits of following their recommendations
Keywords: adults/aged/BLOOD- PRESSURE/BRITISH/cardiovascular/cardiovascular
disease/cardiovascular events/CHOLESTEROL/CORONARY
HEART-DISEASE/cost/costs/disease/drugs/England/guidelines/health/LONDO
N/METAANALYSIS/outcome/population/prevention/primary/primary
care/primary prevention/RANDOMIZED CONTROLLED TRIALS/risk/RISK
PROFILE/STATINS/STROKE/treatment/use
Meade, T., Zuhrie, R., Cook, C. and Cooper, J. (2002), Bezafibrate in men with lower
extremity arterial disease: randomised controlled trial. British Medical Journal,
325 (7373), 1139-1141.
Abstract: Objective To assess the effect of bezafibrate on the risk of coronary heart
disease and stroke in men with lower extremity arterial disease. Design Double
blind placebo controlled randomised trial. Setting 85 general practices and nine
hospital vascular clinics. Participants 1568 men, mean age 68.2 years (range 35
to 92) at recruitment. Interventions Bezafibrate 400 mg daily (783 men) or
placebo (785 men). Main outcome measures Combination of coronary heart
disease and of stroke. All coronary events, fatal and non-fatal coronary events
separately, and strokes alone (secondary end points). Results Bezafibrate did not
reduce the incidence of coronary heart disease and stroke. There were 150 and
160 events in the active and placebo groups respectively (relative risk 0.96, 95%
confidence interval 0.76 to 1.21). There were 90 and 111 major coronary events
in the active and placebo groups respectively (0.81, 0.60 to 1.08), of which 64
and 65 were fatal (0.95, 0.66 to 1.37) and 26 and 46 non-fatal (0.60, 0.36 to 0.99).
Beneficial effects on non-fatal events were greatest in men aged 70% symptomatic stenosis were
considered appropriate, those for 50%-69% symptomatic and > 60%
asymptomatic stenosis were considered uncertain and all others, including those
in medically or neurologically unstable patients, were designated inappropriate.
In part 4, the referral source and nature of the patients was also determined.
Results: Part I (April 1994 - September 1995) found that of 291 CEAs performed
33% were appropriate, 48% were uncertain and 18% were inappropriate, and
40% of patients who underwent CEA were asymptomatic. In part 2 (September
1996 - September 1997) appropriate indications significantly improved to 49%
of 184 CEAs (P=0.005), uncertain indications remained nearly the same at 47%,
inappropriate indications fell to 4% (P=0.00002), and asymptomatic patients
remained at 40%. The results of part 3 (October 1997 - October 1998) remained
nearly the same as part 2 (249 CEAs, 47% appropriate, 51% uncertain, 2%
inappropriate, 45% asymptomatic). Part 4 (October 1999 - October 2000) results
were significantly better than part 3, appropriate indications increasing from 47%
to 58% of 222 CEAs (P=0.02), and an elimination of inappropriate operations
(P=0.03). Stroke and death complications declined over the study period from an
overall rate of 5.2% in part 1 to 2.3% in part 4. In part 4 the majority of patients
(69%) were referred to surgeons directly from general practitioners, including 58
(73%) of the 80 asymptomatic patients who underwent CEA. Interpretation:
Regular auditing and feedback of results and information to surgeons has
resulted in significant and continued improvements in the surgical performance
of CEA in our region. Since the majority of patients are referred directly to
surgeons by general practitioners, it is important that this group of physicians be
familiar with current CEA guidelines
Keywords: AD-HOC-COMMITTEE/AMERICAN-HEART-ASSOCIATION/ARTERY
STENOSIS/asymptomatic/asymptomatic stenosis/ASYMPTOMATIC
ULCERATIVE LESIONS/CANADA/carotid/carotid
endarterectomy/complications/death/endarterectomy/GUIDELINES/LARGE
METROPOLITAN AREA/MEDICARE
BENEFICIARIES/MULTIDISCIPLINARY CONSENSUS
STATEMENT/NATURAL-HISTORY/prevention/randomized/randomized
controlled trials/randomized trials/stenosis/stroke/STROKE COUNCIL/stroke
prevention/symptomatic stenosis/trials/use
Chang, E., Holroyd, B.R., Kochanski, P., Kelly, K.D., Shuaib, A. and Rowe, B.H.
(2002), Adherence to practice guidelines for transient ischemic attacks in an
emergency department. Canadian Journal of Neurological Sciences, 29 (4),
358-363.
Abstract: Objective: To evaluate the investigation and treatment of patients with a
diagnosis of transient ischemic attacks (TIA) in the emergency department (ED)
a tertiary care teaching hospital with a neuroscience referral program. Methods:
A chart review was conducted in the hospital. Consecutive ED charts with a
diagnosis of TIA were included; each was reviewed by independent coders using
a standardized data form. Results: Two hundred and ninety-three TIA charts
were reviewed; the gender ratio was 1: 1 with a mean age of 66 years. Most
patients (75%; 95% CI: 70, 80) were evaluated by ED physicians; the remaining
patients were seen directly by referral services. The median time from symptom
onset to ED arrival was 2.9 hours and the duration of symptoms was 4.6 hours.
Most patients received CT scans (81%; 95% CI: 73, 85), complete blood counts
(74%; 95% CI: 68, 79), and electrocardiograms (75%; 95% CI: 70, 80) in the ED.
In 16% (95% CI: 13, 22) a carotid doppler was performed and in 26% (95% CI:
21, 31) an outpatient doppler was booked. Among those who were discharged
(75%; 95% CI: 70, 80), antithrombotic medications were not prescribed to 28%
(95% CI: 22, 34). Conclusion: Practice variation exists with respect to the
investigation and treatment of TIAs in this tertiary-care teaching hospital.
Carotid doppler investigation and use of anti-platelet therapy for patients with
TIA are suboptimal. Clinical practice guidelines and rapid assessment TIA
clinics may change these results
Keywords:
AD-HOC-COMMITTEE/age/AMERICAN-HEART-ASSOCIATION/antiplatele
t/antiplatelet therapy/antithrombotic/ASPIRIN/CANADA/carotid/CT/CT
scans/diagnosis/gender/guidelines/hospital/ischemic/MANAGEMENT/practice
guidelines/PREVENTION/PROGNOSIS/review/STATEMENT/STROKE-COU
NCIL/symptoms/therapy/TIA/transient/transient ischemic attacks/treatment/use
Bungard, T.J., Ghali, W.A., McAlister, F.A., Buchan, A.M., Cave, A.J., Hamilton, P.G.,
Mitchell, L.B., Shuaib, A., Teo, K.K. and Tsuyuki, R.T. (2003), The relative
importance of barriers to the prescription of warfarin for nonvalvular atrial
fibrillation. Canadian Journal of Cardiology, 19 (3), 280-284.
Abstract: BACKGROUND AND PURPOSE: Despite the publication of a number of
randomized, controlled trials demonstrating a substantial reduction in stroke with
anticoagulation in patients with nonvalvular atrial fibrillation, the 'real world' use
of warfarin is sub-optimal. Previous surveys have attempted to explain this
problem but have significant limitations. The purpose of this study was to assess
the relative importance of various barriers that may influence the prescription of
warfarin in patients with nonvalvular atrial fibrillation. METHODS: This
cross-sectional survey was mailed to all practising cardiologists, neurologists and
internists, as well as a random sample of family physicians within Alberta.
Physicians caring for patients with NVAF rated the relative importance of
potential barriers using a Likert scale. RESULTS: Sixty-seven per cent of all
physicians returned the survey. Overall, barriers pertaining to the patient's
clinical characteristics were rated to be more important than those pertaining to
the physician or to the organization required when prescribing these therapies.
Specifically, an ongoing history of falls, a history of bleeding within the previous
year and an inability to comply with therapy were rated as important barriers by
64%, 55% and 53% of physicians, respectively. Most physicians strongly
believed that patients should receive information on the benefits and risks of
warfarin (96%) and that patients should have a say in whether warfarin is
prescribed (86%). IMPLICATIONS: This study suggests that most of the barriers
to warfarin use pertain to patient clinical characteristics and the need for patients
to be involved in the decision to initiate therapy. The use of decision support
technologies would facilitate involvement of the patient and serve to educate
both the patient and physician on the risks and benefits of warfarin therapy
Keywords: ANTICOAGULATION/ANTITHROMBOTIC THERAPY/atrial/atrial
fibrillation/barriers/benefits/bleeding/CANADA/CARE/ELDERLY
PATIENTS/falls/fibrillation/history/international normalized
ratio/MANAGEMENT/nonvalvular atrial fibrillation/PATTERNS/PHYSICIAN
ATTITUDES/prescribing/randomized/risks/stroke/STROKE
PREVENTION/survey/therapy/TRIAL/trials/use/warfarin
Hittelet, A. and Deviere, J. (2003), Management of anticoagulants before and after
endoscopy. Canadian Journal of Gastroenterology, 17 (5), 329-332.
Abstract: The risk of procedure-related bleeding while taking anticoagulants needs to be
weighed against the risk of thromboembolism from discontinuing these drugs. It
is not necessary to adjust anticoagulation for low-risk procedures, such as upper
endoscopy with biopsy, colonoscopy with biopsy or endoscopic retrograde
cholangiopancreatography with stent insertion (but without sphincterotomy).
Procedures that incur a high risk of bleeding include polypectomy, endoscopic
sphincterotomy, laser therapy, mucosal ablation and treatment of varices. For
these procedures, warfarin should be discontinued four to five days beforehand.
Depending on the risk of thromboembolism, that is based on the nature of the
underlying condition, the patient may require vitamin K and/or fresh frozen
plasma (to ensure that coagulation parameters are within the normal range) or
heparin infusions (to ensure that some degree of anticoagulation is maintained).
Low molecular weight heparin is an alternative to unfractionated heparin for
select cases with a high risk of thromboembolism. Warfarin therapy may
generally be resumed on the night of the procedure and may be supplemented by
heparin in patients with a high risk of thromboembolism. It is not necessary to
discontinue acetylsalicylic acid or nonsteroidal anti-inflammatory drugs, when
used in standard doses, for endoscopic procedures. There are insufficient data to
make recommendations regarding newer antiplatelet drugs, such as ticlopidine or
clopidogrel, but it is prudent to discontinue these medications seven to 10 days
before a high-risk procedure
Keywords: acetylsalicylic
acid/anticoagulant/anticoagulants/anticoagulation/antiplatelet/antiplatelet
drugs/bleeding/BLEEDING
COMPLICATIONS/CANADA/clopidogrel/coagulation/DEEP-VEIN
THROMBOSIS/drugs/endoscopy/HEPARIN/high
risk/LOW-MOLECULAR-WEIGHT/NSAID/PREVENTION/risk/SPHINCTER
OTOMY/stent/STROKE/SURGERY/therapy/thromboembolism/ticlopidine/treat
ment/unfractionated heparin/VENOUS
THROMBOEMBOLISM/vitamin/warfarin/WARFARIN THERAPY/weight
McLellan, C.S., Abdollah, H., Brennan, F.J. and Simpson, C.S. (2003), Atrial fibrillation
in the pacemaker clinic. Canadian Journal of Cardiology, 19 (5), 492-494.
Abstract: BACKGROUND: Electrocardiographic (ECG) recognition of the underlying
rhythm in patients with ventricular pacing can be difficult. Atrial fibrillation (AF)
in particular may go unreported. OBJECTIVES: To compare the underlying
atrial rhythm determined in the pacemaker clinic with the 12-lead ECG
interpretation of the atrial rhythm in those who were continuously paced in the
ventricle. It was intended to determine whether long term anticoagulation therapy
was related to whether AF was diagnosed before or after pacemaker implantation.
METHODS: Pacemaker clinic patients were enrolled if they had a 100% paced
ventricular rhythm. The underlying rhythm was determined using pacemaker
programming manoeuvres. A 12-lead ECG was recorded on all patients within
10 min of their pacemaker assessment and interpreted by one of the several
geographic full-time cardiologists at the centre. All cardiologists were blinded to
the results of pacemaker assessment and to the clinical history. RESULTS:
Fifty-six patients were enrolled. At the pacemaker clinic, 37 were determined to
be in AF and three were in atrial flutter (AFL). Of these 40 patients with
AF/AFL, 28 were correctly identified as such on the 12-lead ECG interpretation.
Twelve of the 40 were interpreted only as having an 'electronic ventricular
pacemaker' (EVP). Sixteen of the 40 patients (40.0%) with AF or AFL were not
taking warfarin. Twenty-two of 25 patients with an AF/AFL diagnosis before
pacemaker implantation were taking warfarin, compared with two of 15 patients
with AF/AFL diagnosis after pacemaker implantation (P 50% carotid stenosis, 16 with previously unknown cardiac
arrhythmias and 104 had hypertension, It was concluded that this protocol
provides an accurate, rapid and cost-effective means of screening for the three
immediate causes of stroke and can on broad application result in significant
stroke reduction. (C) 1998 The International Society for Cardiovascular Surgery,
Published by Elsevier Science Ltd. All rights reserved
Keywords: arrhythmias/atrial fibrillation/carotid/carotid artery/carotid artery
disease/CAROTID ENDARTERECTOMY/carotid
stenosis/cholesterol/cost/detection/ENGLAND/fibrillation/hypertension/new
protocol/prevention/protocols/screening/STENOSIS/stroke/stroke
prevention/trials/ultrasound
Kim, G.E., Kwon, T.W., Cho, Y.P., Kim, D.K. and Kim, H.S. (2001), Carotid
endarterectomy with bovine patch angioplasty: A preliminary report.
Cardiovascular Surgery, 9 (5), 458-462.
Abstract: Carotid endarterectomy with patch angioplasty is a durable procedure for
prevention of recurrent neurological symptoms and stroke. However, no
definitive study has demonstrated a clear benefit of one class of the patch
material over another. The aim of this study was to evaluate the clinical outcome
of carotid endarterectomy with bovine pericardium patch in comparison with
autologous vein patch. One hundred and twenty- two carotid endarterectomies
were performed using patch closure of the arteriotomy with bovine pericardium
(61 cases) and autologous vein (61 cases) between September 1995 and June
1999. Though this is not a double-blind type randomized comparative study,
effort was made to achieve a 1:1 ratio in sequence with a few exceptions such as
non-availabie veins at time of surgery or for future use. In bovine pericardium
patch closure group, the mean total operating time was significantly shorter than
autologous vein closure group (P
0.05). The octogenarians' Kaplan- Meier 6-year overall and free-stroke survival
rates were 86 and 76% respectively. CEA can be performed in selected
octogenarian patients with low early and late mortality and neurologic morbidity
rates. (C) 2003 The International Society for Cardiovascular Surgery. Published
by Elsevier Science Ltd. All rights reserved
Keywords: AGE/ASYMPTOMATIC PATIENTS/carotid/carotid
endarterectomy/CIGARETTE-SMOKING/death/DISEASE/elderly/endarterecto
my/ENGLAND/MODERATE/morbidity/mortality/NATURAL-HISTORY/octog
enarian/outcomes/RISK FACTOR/safety/STENOSIS/STROKE/stroke
prevention/SURGERY/survival
White, C.J., Gomez, C.R., Iyer, S.S., Wholey, M. and Yadav, J.S. (2000), Carotid stent
placement for extracranial carotid artery disease: Current state of the art.
Catheterization and Cardiovascular Interventions, 51 (3), 339-346.
Abstract: Percutaneous revascularization techniques have dramatically altered traditional
approaches to the management of both coronary and peripheral vascular disease.
Their major advantage is that they are less invasive than conventional surgical
procedures, offering revascularization without the risk of general anesthesia and
with lesser procedural morbidity and mortality, shorter hospital stay, and lower
cost. In patients with comorbidities that increase their risk of surgical
complications, percutaneous revascularization techniques are the procedures of
choice. The Achilles heel of balloon angioplasty, the higher risk of lesion
recurrence, restenosis, has been markedly reduced with the use of endovascular
stents. Over the past 20 years, percutaneous angioplasty and stenting have
become accepted alternatives to surgical revascularization of aortoiliac, renal,
femoropopliteal, subclavian, brachiocephalic, and dialysis access lesions. The
most recent application of percutaneous intervention has been to explore its
clinical utility and safety for stroke prevention in stenotic extracranial carotid
arteries. Cathet. Cardiovasc. Intervent. 51:339-346, 2000. (C) 2000 Wiley-Liss,
Inc
Keywords:
AD-HOC-COMMITTEE/AMERICAN-HEART-ASSOCIATION/ANGIOPLAS
TY/arteries/balloon angioplasty/carotid/carotid arteries/carotid artery/carotid
artery disease/CATHETER/cerebrovascular
circulation/complications/cost/ENDARTERECTOMY/GUIDELINES/hospital/m
orbidity/mortality/NEW-YORK/peripheral vascular
disease/prevention/PROFESSIONALS/recurrence/renal/revascularization/risk/RI
SKS/safety/STENOSIS/stenting/stents/stroke/STROKE COUNCIL/stroke
prevention/vascular/vascular disease
Velianou, J.L., Strauss, B.H., Kreatsoulas, C., Pericak, D. and Natarajan, M.K. (2000),
Evaluation of the role of abciximab (Reopro) as a rescue agent during
percutaneous coronary interventions: In-hospital and six-month outcomes.
Catheterization and Cardiovascular Interventions, 51 (2), 138-144.
Abstract: Abciximab is effective for the prevention of complications when administered
prior to percutaneous coronary intervention (PCI). The efficacy and safety of
abciximab as an unplanned or rescue agent for complications of PCI is unknown.
Rescue versus planned use was compared in 186 consecutive patients. Primary or
rescue PCI for acute myocardial infarction (MI) and shock were excluded.
Rescue abciximab use was undertaken in 101 patients (54.3%) and planned
abciximab was used in 85 (45.7%). The rescue abciximab patients had a lower
incidence of previous MI, preprocedural thrombus, multivessel, and vein graft
intervention. In-hospital endpoints in the rescue versus planned abciximab
patients were death (1.0% vs. 1.2%, P = 1.0), Q-wave MI (2.0% vs. 2.4%, P =
1.0), any MI (14.9% vs. 9.4%, P = 0.3), target vessel revascularization (TVR; 0%
vs. 1.2%, P = 1.0), and composite (15.8% vs. 10.6%, P = 0.3). At 6 months,
events were death (4.0% vs. 2.3%, P = 0.69), MI (14.9% vs. 9.4%, P = 0.26),
TVR (20.8% vs. 4.7%, P = 0.001), and composite (30.7% vs. 15.3%, P = 0.01).
In-hospital complications between the rescue and planned abciximab patients of
major bleed (1.0% vs. 1.8%, P = NS), stroke (0% vs. 1.8%, P = NS), and
thrombocytopenia (3.0% vs. 1.8%, P = NS) were similar. There was a
significantly higher procedural time (99.6 min vs. 86.1 min, P = 0.02), contrast
volume (278.8 ml vs. 223.5 ml, P = 0.04), and heparin use (8984 u vs. 6003 u, P
= 0.0006) in the rescue group. In this nonrandomized comparison, rescue
abciximab allowed for the safe discharge from hospital in the majority of patients.
However, during a 6-month follow-up, more patients treated with rescue
abciximab required TVR with either repeat PCI or CABG. Further studies are
warranted to evaluate the overall strategy of rescue abciximab use in PCI. Cathet
Cardiovasc. Intervent 51:138-144, 2000. 2000 Wiley-Liss, Inc
Keywords: abciximab/ABRUPT CLOSURE/acute/acute myocardial
infarction/ANGIOPLASTY/angioplasty/ANTIPLATELET/CABG/CATHETER/
COMPLICATIONS/coronary artery
disease/heparin/hospital/incidence/infarction/myocardial/myocardial
infarction/NEW-YORK/PREVENTION/REVASCULARIZATION/RISK/safety
/stroke/THERAPY/thrombus/UNSTABLE ANGINA/VESSEL CLOSURE
Du, Z.D., Cao, Q.L., Joseph, A., Koenig, P., Heischmidt, M., Waight, D.J., Rhodes, J.,
Brorson, J. and Hijazi, Z.M. (2002), Transcatheter closure of patent foramen
ovale in patients with paradoxical embolism: Intermediate-term risk of recurrent
neurological events. Catheterization and Cardiovascular Interventions, 55 (2),
189-194.
Abstract: Closure of patent foramen ovale (PFO) has been proposed as an alternative to
anticoagulation in patients with presumed paradoxical emboli. We report our
preliminary intermediate results of patients who underwent transcatheter PFO
closure for paradoxical embolism using DAS-Angel Wings occluder or
Amplatzer devices. Eighteen patients (8 male/10 female) underwent catheter
closure of their PFOs at a median age of 42 years. The complete closure rate was
67% immediately after the procedure and 100% at a mean follow-up interval of
2.2 +/- 1.8 years. The mean fluoroscopy time and procedure time in the
Amplatzer group were 8.5 +/- 3.2 min and 65 +/- 21 min, respectively, which
were significantly shorter than those of DAS-Angel Wings group (18.9 +/- 4.7
min and 137 +/- 28 min, respectively). There were no recurrent embolic
neurological events following device placement in this subset of patients. No
complications were encountered either during or after the closure procedure. In
conclusion, transcatheter closure of PFO seems to be an effective alternative
therapy in the prevention of presumed paradoxical emboli. Further study is
needed to identify patients most likely to benefit from this intervention. (C) 2002
Wiley-Liss, Inc
Keywords: age/anticoagulation/ATRIAL
SEPTAL-DEFECT/CATHETER/complications/CRYPTOGENIC
STROKE/DEVICE/device closure/emboli/embolism/foramen
ovale/HEART-DISEASE/NEW-YORK/paradoxical embolism/patent/patent
foramen ovale/PFO/prevention/risk/stroke/therapy/transcatheter
closure/TRANSESOPHAGEAL ECHOCARDIOGRAPHY/transient ischemic
attack
Wilentz, J.R., Chati, Z., Krafft, V. and Amor, M. (2002), Retinal embolization during
carotid angioplasty and stenting: Mechanisms and role of cerebral protection
systems. Catheterization and Cardiovascular Interventions, 56 (3), 320-327.
Abstract: Carotid stenting has become an accepted alternative to endarterectomy, but
fear of embolic stroke has impeded its generalized application. The retina
provides a unique observatory for the study of emboli, which may occur either
directly or indirectly via collaterals to the ophthalmic artery. Systems under
development for cerebral protection differ in their capacity to trap small emboli
and in their protection of the collateral circulation. We evaluated 118 sequential
patients undergoing carotid stenting using fundoscopy, fluorescein retinal
angiography, and visual field examination. The site and size of emboli was
assessed, and degree of edema estimated. All patients were treated using distal
protection during carotid stent implantation: 38 patients with the Theron system
(using routine flushing toward the external carotid) and 80 patients with the
Percusurge(R) system (aspiration only). Retinal embolization occurred in 6 of the
118 patients (4%), of whom 2 were symptomatic (1.7%). Using the Theron
system, 5 of 38 patients (13.2%) had emboli while 1 of 80 (1.25%) had emboli
using the Percusurge system (P = 0.019). Symptoms occurred only with emboli
>20 mum. Symptomatic retinal embolization is uncommon during carotid
stenting, but is more likely when external to internal carotid collaterals are not
protected. Cerebral protection system designs should take into consideration the
existence of collaterals and the need to protect against smaller sized emboli,
which may cause blindness in the retinal circulation
Keywords: amaurosis fugax/angiography/angioplasty/ARTERY
DISEASE/aspiration/blindness/carotid/carotid angioplasty/carotid artery/carotid
circulation/carotid endarterectomy/carotid stenosis/carotid stent/carotid
stenting/CATHETER/cerebral/cerebral protection/development/distal
protection/EFFICACY/emboli/EMBOLIC
EVENTS/embolization/ENDARTERECTOMY/FLOW/internal/NEW-YORK/op
hthalmic artery/PREVENTION/protection/retina/retinal
artery/RISK/stent/stenting/stents/stroke/transient ischemic attack/USA
Fayed, A.M., White, C.J., Ramee, S.R., Jenkins, J.S. and Collins, T.J. (2002), Carotid
and cerebral angiography performed by cardiologists: Cerebrovascular
complications. Catheterization and Cardiovascular Interventions, 55 (3),
277-280.
Abstract: The management of extracranial carotid artery disease is primarily concerned
with the prevention of acute stroke. In order to understand the current risks of
carotid angiography performed by interventional cardiologists, we undertook a
retrospective study to determine the neurologic complications in patients who
underwent selective cerebral angiography. All patients undergoing studies that
were limited to diagnostic aortic arch angiography and selective four-vessel
cerebral angiography in the cardiac catheterization laboratories during the past 6
years were included in this study. Hospital records were reviewed to determine
any in-hospital cerebrovascular complications following carotid angiography,
ranging from transient ischemic attack to major disabling stroke or death. A total
of 189 consecutive patients underwent 191 diagnostic studies limited to aortic
arch and four-vessel cerebral angiography in the cardiac catheterization
laboratories between 1 January 1995 and 31 December 2000. Only one (0.52%)
neurological complication, a minor stroke, occurred in our study population.
There were no transient ischemic attacks, major strokes, or death. We have
shown that experienced interventional cardiologists can perform diagnostic aortic
arch and selective carotid and vertebral angiography in a cardiac catheterization
laboratory with a very low complication rate. Because the risks of angiography
add to those of revascularization of the carotid artery, the most highly skilled
angiographer, regardless of primary specialty, should perform these studies. (C)
2002 Wiley-Liss, Inc
Keywords: acute/acute stroke/angiography/ANGIOPLASTY/aortic arch
angiography/cardiac/carotid/carotid artery/carotid artery
disease/CATHETER/catheterization/catheterization
complications/cerebral/cerebral
angiography/cerebrovascular/complication/complications/death/diagnostic/DISE
ASE/ENDARTERECTOMY/ISCHEMIA/ischemic/management/neurologic
complications/neurological
complication/NEW-YORK/population/prevention/primary/revascularization/RIS
K/STROKE/transient/transient ischemic attack/transient ischemic
attacks/ULTRASOUND
Grube, E., Colombo, A., Hauptmann, E., Londero, H., Reifart, N., Gerckens, U. and
Stone, G.W. (2003), Initial multicenter experience with a novel distal protection
filter during carotid artery stent implantation. Catheterization and
Cardiovascular Interventions, 58 (2), 139-146.
Abstract: Atheroembolization resulting in transient or permanent neurologic impairment
is the most common complication of catheter-based percutaneous carotid artery
intervention. Protection of the distal cerebral vasculature during carotid stent
implantation may enhance procedural safety. Carotid stent implantation with
distal cerebral protection using the FilterWire EX was performed in 35
consecutive patients undergoing 36 procedures at six centers. The FilterWire was
delivered and deployed successfully in all 36 cases, and embolic material was
retrieved from 74% of procedures. The 30- day rate of major adverse events
(death, major or minor stroke) was 0%. Transient ipsilateral periprocedural
neurologic ischemia developed in two patients (5.7%), both resolving within 30
min. Distal cerebral protection with the FilterWire during carotid stenting is
feasible and safe, results in capture and extraction of atheroembolic debris in the
majority of patients while affording uninterrupted cerebral perfusion, and in this
initial multicenter experience was associated with a high rate of procedural
success without major complications
Keywords: adverse events/ANGIOPLASTY/carotid/carotid artery/carotid
disease/carotid stent/carotid stenting/CATHETER/cerebral/cerebral
perfusion/CEREBRAL
PROTECTION/complication/COMPLICATIONS/death/distal
protection/EFFICACY/emboli/ENDARTERECTOMY/filters/ischemia/NEW-Y
ORK/OCCLUSION/PREVENTION/protection/results/safety/STENOSIS/stent/st
enting/STROKE/SYSTEM/transient/USA/vasculature
Biousse, V., Woimant, F., Amarenco, P., Touboul, P.J. and Bousser, M.G. (1992), Pain
As the Only Manifestation of Internal Carotid-Artery Dissection. Cephalalgia,
12 (5), 314-317.
Abstract: Internal carotid artery dissection is a major cause of ischemic stroke in the
young. Pain is the leading symptom and is associated with other focal signs such
as Homer's syndrome and painful tinnitus or with signs of cerebral or retinal
ischemia. We report two patients with angiographically confirmed extracranial
internal carotid artery dissection presenting with cephalic pain as the only
manifestation. The first patient had a diffuse headache and a latero-cervical pain
lasting for 12 days, reminiscent of carotidynia. The second patient experienced
an exploding headache suggestive of subarachnoid hemorrhage, which was ruled
out by computed tomography of the head and cerebrospinal fluid study. These
patients demonstrate that recognition of carotid artery dissection as a cause of
carotidynia and headache suggestive of subarachnoid hemorrhage may permit an
earlier diagnosis and possibly the prevention of a stroke through the use of
anticoagulation
Keywords: CAROTIDYNIA/HEADACHE/INTERNAL CAROTID ARTERY
DISSECTION/MIGRAINE
Giroud, M., Gras, P. and Dumas, R. (1991), Usefulness of A Population-Based Stroke
Registry. Cerebrovascular Diseases, 1 45-49.
Abstract: Stroke registries can supply eminent informations concerning epidemiological,
clinical and socio-economical data providing they are reliable, i.e. compliant
with Malmgren's criteria and the Oxford registration model. The collection must
include a well-defined population. It must be exhaustive, specific and
prospective in order to prevent omissions and to facilitate the elimination of
other diagnoses. Only the first stroke has to be taken into account for each patient
and the clinical reports have to be complete (usefulness of a simplified but
flexible work file). Finally, the rate of diagnoses either doubtful or based on
death certificate has to be low. A CT scan should be performed for each patient
and a maximum number of information sources is required. Consequently, a
stroke registy (1) provides descriptive epidemiological stroke studies. They are
based on the estimation of incidence and mechanisms of stroke. Their main value
is to appreciate the extent of the health problem, to forecast the expected number
of patients and to assess the quality of data collection by controlling their
consistency from one year to the next. These studies can determine the
distribution of stroke among the 3 traditional health care procedures (hospitals,
private clinics and home care). This information is of major importance when
undertaking clinical or prevention trials. Finally, the collection of survival data
from the studies is important to state the natural history of stroke and therefore to
appreciate their alteration following a special treatment or new preventive
procedures. (2) A stroke registry allows some contribution to clinical research by
providing the distribution ratio of different stroke subtypes and mechanisms, the
clinical data for semiological analyses and the adjusted prognosis criteria
according to data trom nonhospitalized cases. (3) It also allows the development
of analytic epidemiological studies. Such a registry avoids some bias. Analysis of
etiological factors is done on case-control and cohort studies. These registries are
of great methodological help to the analyses of drug trials. (4) The registry leads
to experimental epidemiological studies. It is a good tool for controlling health
care quality and confirming the role of a factor underscored by an analytic
epidemiological study: the consequences of the risk factor reduction or eviction
(e.g. smoking, alcohol, high blood pressure, dyslipidemia) provide additional
evidence towards its etiological role. (5) It provides sanitary information. The
diffusion of these results to clinicians, searchers and sanitary authorities is of
great importance. All these advantages do not abolish the relevance of hospital
registries, which despite recruitment bias, provide much more accurate clinical
studies, CT scans in almost 100% of the patients, and a better follow-up, such as
in Lausanne
Keywords: ACUTE
CEREBROVASCULAR-DISEASE/AREA/COMMUNITY/CT/DATA-BANK/
DECLINE/EPIDEMIOLOGY/HISTORY/INCIDENCE
RATES/INFARCTION/PROJECT 1981- 86/REGISTRY/STROKE
Barnett, H.J.M. (1991), 35 Years of Stroke Prevention - Challenges, Disappointments
and Successes. Cerebrovascular Diseases, 1 (2), 61-70.
Abstract: Thirty-five years have demonstrated conclusively that stroke is a preventable
disease. Clinical trials have determined that: anticoagulants prevent stroke when
thrombi are in the left side of the heart and are of benefit in the presence of atrial
fibrillation. Aspirin and ticlopidine reduce the risk of stroke in symptomatic
patients. No other platelet-inhibiting drugs alone or in combination have a
proven value. Primary stroke prevention trials remain to be done in the
population most likely to benefit from aspirin. Bypass surgery has failed to
prevent stroke; patients should not be subjected to this procedure except in an
experimental setting. The appropriate indications and benefits from carotid
endarterectomy in symptomatic and asymptomatic patients remain uncertain;
present studies will give definitive answers to this 35-year-old question
Keywords: ASPIRIN/ATRIAL- FIBRILLATION/BYPASS SURGERY/CAROTID
ENDARTERECTOMY/DECLINE/EXTRACRANIAL-INTRACRANIAL
BYPASS/INTERNATIONAL RANDOMIZED TRIAL/MIDDLE
CEREBRAL-ARTERY/OCCLUSION/PLATELET
INHIBITORS/SECONDARY PREVENTION/STROKE/STROKE
PREVENTION/THROMBOEMBOLIC STROKE/UNSTABLE ANGINA
Hacke, W., Krieger, D. and Hirschberg, M. (1991), General-Principles in the Treatment
of Acute Ischemic Stroke. Cerebrovascular Diseases, 1 93-99.
Abstract: Currently, therapy of acute ischemic stroke includes general treatment, such as
pulmonary function and airway protection, cardiac care and blood pressure
management, fluid and electrolyte balance, treatment of elevated intracranial
pressure due to brain edema and specific treatment, such as restitution of
perfusion, maintenance of perfusion and increase of diminished blood flow, as
well as prevention of ischemic cellular damage. In this article, the rationale for
these therapeutic strategies is discussed and appropriate approaches to different
subgroups of strokes are proposed. These include dissection of the carotid and
vertebral arteries, basilar occlusion, middle cerebral artery occlusion, multiple
transient ischemic attacks or slowly progressive stroke due to high-grade internal
carotid artery stenosis and space-occupying cerebellar infarction. Despite the
lack of generally accepted and scientifically proven therapies, many approaches
seem promising. Individual concepts for defined stroke subgroups need to be
verified in controlled prospective multicenter trials
Keywords: ACUTE NONHEMORRHAGIC STROKE/CEREBRAL
INFARCTION/DAMAGE/DISEASE/DOUBLE-BLIND TRIAL/GENERAL
THERAPY/HEMODILUTION/ISCHEMIC STROKE/NIMODIPINE/SPECIFIC
MEDICAL AND SURGICAL THERAPY/SUBARACHNOID HEMORRHAGE
Sherman, D.G. (1992), Stroke Prevention Trials in Atrial-Fibrillation. Cerebrovascular
Diseases, 2 14-17.
Abstract: Four randomized, controlled clinical trials have been reported comparing
warfarin or aspirin to placebo for the primary prevention of stroke or systemic
embolism in patients with atrial fibrillation. Two trials studied aspirin. Control
patients in the warfarin eligible studies had stroke event rates of 4.5% per year
(3.0-7.0) compared to 1.7% per year (0.2-3.4) in the patients treated with
warfarin. One of the two studies examining aspirin found a significant reduction
in stroke whereas the other did not. Annual rates of major bleeding in the patients
treated with warfarin were less than 2%. These studies conclude that all patients
with atrial fibrillation should be treated with antithrombotic therapy to prevent
cerebral infarction. Warfarin reduces the risk of stroke by about two thirds with
an acceptable risk of bleeding
Keywords: ANTICOAGULATION/ATRIAL FIBRILLATION/CARDIOGENIC
EMBOLUS/STROKE
Anderson, D.C., Asinger, R.W., Newburg, S.M., Bundlie, S.R., Farmer, C.C., Koller,
R.L., Haugland, J.M., Nance, M.A., Tarrel, R.M., Dunbar, D.N., Jorgensen, C.R.,
Sharkey, S.W., Flaker, G.C., Webel, R., Nolte, B., Stevenson, P., Byer, J.,
Wright, W., Chesebro, J.H., Wiebers, D.O., Holland, A.E., Lee, S., Bardsley,
W.T., Kopecky, S., Litin, S.C., Meissner, I., Zerbe, D.M., Mcanulty, J.H.,
Marchant, C., Coull, B.M., Feldman, G., Hayward, A., Macmillan, K., Gandara,
E., Blank, N., Leonard, A.D., Kanter, M.C., Solomon, D., Zabalgoitia, M., Logan,
W.R., Hamilton, W.P., Green, B.J., Bacon, R.S., Janosik, D.L., Cadell, D.J.,
Kellerman, L., Gomez, C.R., Labovitz, A.J., Kelley, R.E., Chahine, R., Palermo,
M., Teixeiro, P., Feinberg, W.M., Vold, B.K., Kern, K.B., Appleton, C., Miller,
V.T., Hockersmith, C.J., Cohen, B.A., Halperin, J.L., Rothlauf, E.B., Weinberger,
J.M., Goldman, M.E., Dittrich, H.C., Rothrock, J.F., Hagenhoff, C., Helgason,
C.M., Kondos, G.T., Hoff, J., Rabjohns, R.R., Mcrae, R.P., Ghali, J., Rothbart,
R.M., Bailey, G.H., Burkhardt, C., Horwitz, L., Blackshear, J.L., Weaver, L.,
Baker, V., Lee, G., Lane, G., Rubino, F., Stafford, R., Mcbride, R., Pearce, L.,
Fossum, K., Nasco, E., Hart, R.G., Sherman, D.G., Talbert, R.L., Dacy, T.L.,
Heberling, P.A., Anderson, D.C., Halperin, J.L., Hart, R.G., Mcanulty, J.H.,
Mcbride, R., Pearce, L.A., Colton, T., Levy, D.E., Marsh, J.D., Welch, K.M.A.,
Marler, J.R. and Walker, M.D. (1992), Warfarin Compared to Aspirin for
Prevention of Arterial Thromboembolism in Atrial-Fibrillation - Design and
Patient Characteristics of the Stroke Prevention in Atrial Fibrillation-Ii Study.
Cerebrovascular Diseases, 2 (6), 332-341.
Abstract: Recent clinical trials have established that warfarin is highly effective in
reducing ischemic stroke in patients with nonvalvular atrial fibrillation, but the
relative value of aspirin compared to warfarin is less clear. We report the
rationale and design of the second phase of the Stroke Prevention in Atrial
Fibrillation (SPAF II) Study. The SPAF II Study compares warfarin (adjusted to
prolong the prothrombin time ratio 1.3-1.8 times control or INR 2-4.5) to aspirin
(325 mg/day) in a randomized clinical trial involving 1,100 patients at 16 centers.
Medications are not administered in a blind fashion; primary events (all ischemic
strokes and systemic emboli) are verified by an Events Verification Committee
who has no knowledge of treatment allocation. We hypothesize that aspirin may
be inadequately effective in patients over age 75 years and that warfarin may be
more toxic in these elderly patients. Consequently, the primary analyses of the
SPAF II Study compare the effect of antithrombotic therapies separately in
patients less-than-or-equal-to 75 years old (n = 715) and in patients > 75 years
old (n = 385). All patients have been entered and final results are expected in
1993. The mean patient age is 64 years in the younger group and 80 years in the
older group. Patients over age 75 years are more often women (p 1,900 patients, enough to
detect a 30% reduction in the frequency of stroke and death in the warfarin group
compared with aspirin if differences this large exist
Keywords: ASPIRIN/DOUBLE-BLIND/INTERNATIONAL NORMALIZED
RATION/NEW-YORK/prevention/PROTHROMBIN
TIME/RANDOMIZED/RECURRENT STROKE/stroke/TRIAL/WARFARIN
Adams, H.P., Byington, R.P., Hoen, H., Dempsey, R. and Furberg, C.D. (1995), Effect
of Cholesterol-Lowering Medications on Progression of Mild Atherosclerotic
Lesions of the Carotid Arteries and on the Risk of Stroke. Cerebrovascular
Diseases, 5 (3), 171-177.
Abstract: The Asymptomatic Carotid Artery Progression Study (ACAPS) compared the
usefulness of lovastatin alone or in combination with warfarin in the prevention
of 3-year progression of mean maximum intimal-medial thickness (IMT), which
is a measure of early atherosclerosis. The factorally desgined, placebo-
controlled study enrolled 919 men and women aged 40-79 who had moderately
elevated low-density-lipoprotein (LDL) cholesterol and a single maximum IMT
of 1.5-3.5 mm in the carotid arteries. Lovastatin significantly reduced LDL
cholesterol. The mean maximum IMT declined at an annual rate of 0.009 mm
among those persons taking lovastatin while the mean maximum IMT increased
by 0.006 mm in the controls (p = 0.001). In addition, deaths and the combined
frequency of coronary deaths, nonfatal myocardial infarctions and strokes were
significantly lowered among the lovastatin-treated groups. Only 5 strokes (3
hemorrhages) were detected in the study; all occurred among those persons who
were receiving lovastatin placebo. Our study suggests that early administration of
lipid-lowering drugs halts the progression of early atherosclerosis in the carotid
artery. In turn, such early primary preventive treatment may lessen the risk of
important ischemic vascular events including stroke
Keywords: aged/ASSOCIATIONS/ATHEROSCLEROSIS/B-MODE
ULTRASOUND/carotid/carotid arteries/CAROTID
ARTERY/cholesterol/CORONARY HEART-DISEASE/EXPANDED
CLINICAL-EVALUATION/HYPERCHOLESTEROLEMIA/HYPERLIPIDEM
IA/INTIMAL-MEDIAL
THICKNESS/LIPOPROTEINS/LOVASTATIN/LOVASTATIN
EXCEL/POPULATIONS/prevention/REGRESSION/risk/stroke/THERAPY/trea
tment/vascular/warfarin/women
Adams, H.P. and Love, B.B. (1995), Transesophageal Echocardiography in the
Evaluation of Young- Adults with Ischemic Stroke - Promises and Concerns.
Cerebrovascular Diseases, 5 (5), 323-327.
Abstract: Transesophageal echocardiography (TEE) is a valuable and sensitive test to
screen for embolic cardiac lesions. This procedure is recommended for the
evaluation of most young adults with ischemic stroke. However, several
questions about the role of TEE need to be addressed. Large studies that clarify
the influence of the results of TEE on management are needed. Additional data
about the importance of some of the findings are also needed. The prevalence
and significance of TEE-detected abnormalities such as atrial septal aneurysm,
patent foramen ovale, left atrial turbulence, left atrial appendage thrombi,
Lambl's excrescence, or a Chiari network among young adults require definition.
Thereafter, clinical trials can test interventions for primary or secondary
prevention of stroke in these cohorts
Keywords: adults/atrial septal aneurysm/ATTACKS/CARDIAC
EVALUATION/clinical
trials/DISEASE/echocardiography/evaluation/FIBRILLATION/FOCAL
CEREBRAL-ISCHEMIA/ISCHEMIC STROKE/LEFT ATRIAL
THROMBI/PATENT FORAMEN OVALE/PATIENT/prevention/secondary
prevention/stroke/SYSTEMIC EMBOLISM/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/trials/TWO-DIMENSIONAL
ECHOCARDIOGRAPHY/YOUNG ADULTS
Eriksson, S., Olofsson, B.O. and Wester, P.O. (1995), Atenolol in Secondary Prevention
After Stroke. Cerebrovascular Diseases, 5 (1), 21-25.
Abstract: This study investigated the effect of 50 mg atenolol in reducing the risk of
death, stroke and myocardial infarction after stroke and transient ischaemic
attacks (TIA). The study was designed as a Swedish multicentre, randomised,
double- blind, parallel group study with randomisation stratified according to age
and prognostic score. Seven hundred and twenty patients aged over 40 years who
had no contraindications to beta-blockers were included within 3 weeks of a
stroke or TIA, with 372 patients (mean age 70.7 years) randomised to the
treatment and 348 patients (mean age 70.1 years) to the placebo group. Major
strokes made up the index events in 81% of patients in the treatment and 79% of
those in the placebo group. The two groups were similar in respect to baseline
characteristics. The index event was classified as an ischaemic stroke in 86.8 and
86.3% of patients in the treatment and placebo groups, respectively. Side effects
of atenolol and placebo caused 17 and 10% of patients to withdraw from
allocated treatment. During the follow-up period (mean 28 months) 51 patients in
the treatment group died compared to 60 in the placebo group [relative risk with
95% confidence interval 0.79 (0.54-1.16)] and 74 patients in the treatment group
suffered a further major stroke compared to 69 in the placebo group. Twenty-six
and 29 patients, respectively, suffered an acute myocardial infarction.
Calculations using survival techniques and Cox's proportional hazard model
indicated a reduced risk of death (21%) and myocardial infarction (7%) in the
treatment group with no reduction in the risk of further stroke. None of these
reductions was statistically significant. Thus the study failed to confirm a
statistically significant reduction in death, stroke or myocardial infarction after
major stroke or TIA by 50 mg atenolol. However, the results do not exclude a
possible secondary prophylactic effect of atenolol in secondary prophylaxis after
stroke and TIA
Keywords: acute myocardial
infarction/aged/BETA-BLOCKADE/beta-blockers/CEREBROVASCULAR
DISORDER/INTERNAL/myocardial
infarction/MYOCARDIAL-INFARCTION/PROGNOSIS/PROJECT/prophylaxi
s/risk/RISK- FACTORS/SECONDARY
PROPHYLAXIS/stroke/TIA/transient/TRANSIENT ISCHEMIC
ATTACK/TRANSIENT ISCHEMIC ATTACKS/treatment
Rastenyte, D., Tuomilehto, J., Sarti, C., Cepaitis, Z. and Bluzhas, J. (1996), Trends in
the incidence and mortality of stroke in Kaunas, Lithuania, 1986-1993.
Cerebrovascular Diseases, 6 (1), 13-20.
Abstract: The trends in incidence, 28-day mortality and 28-day case fatality of stroke
during the period 1986-1993 were assessed in the population aged 35-64 years in
Kaunas, Lithuania. The Kaunas community-based stroke register was the source
of data. During the study period the incidence of stroke increased by 14% in men
and remained stable in women. The overall mortality from stroke increased by
34% in men and by 10% in women. The case fatality of all strokes as well as that
of first ever strokes increased during the study period approximately by 20%.
These results suggest that the increase in mortality from stroke in Kaunas is
mostly due to an increase in the severity of the disease, especially among men. In
addition, also the number of new stroke events increased in men, partly
explaining the larger increase in mortality from stroke observed among men than
among women. Appropriate strategies for the primary prevention of stroke are
required in Lithuania. To achieve this aim, future studies are also needed to
estimate relative and population-attributable risks for various risk factors of
stroke
Keywords: aged/ANTIHYPERTENSIVE TREATMENT/attack rate/case
fatality/COMMUNITY/DECLINE/DISEASE/FATALITY
RATES/FINLAND/incidence/INCIDENCE
RATES/Lithuania/mortality/NORTH KARELIA/prevention/primary
prevention/PROJECT/risk/risk factors/severity/stroke/women
Bogousslavsky, J., Brott, T., Diener, H.C., Fieschi, C., Hacke, W., Kaste, M., Orgogozo,
J.M. and Wahlgren, N.G. (1996), European strategies for early intervention in
stroke - A report of an Ad Hoc Consensus Group meeting. Cerebrovascular
Diseases, 6 (5), 315-324.
Abstract: Stroke is a major cause of death and disability in industrialized countries, but
stroke awareness is still generally poor and treatment often ill-defined. At a
meeting of a European Ad Hoc Consensus Group, the following
recommendations for acute stroke management were made. Need for education:
There is a clear need for stroke awareness to be increased. Use of the terms 'brain
attack' and 'brain infarction', appropriately translated into the major European
languages, can aid this process. The major target groups for educational
programmes should be the public, particularly those at risk and their spouses and
relatives, and paramedical staff. Media campaigns that inform the public what to
do and where to go/contact if a stroke occurs could significantly reduce the time
to presentation. Acute stroke care should not be promoted too aggressively or
prematurely before an adequate infrastructure is in place to successfully
administer modern evidence-based therapies. Organization of acute stroke care:
Stroke is a medical emergency. A stroke unit offers the most effective acute
stroke care in terms of both mortality and short- and long-term morbidity, and
may thereby both improve outcome and lower costs. A stroke team is an
acceptable alternative in areas where a dedicated stroke unit is not available.
Optimal acute stroke care: General guidelines should be provided on the flow of
decision-making and urgent care, with specific instructions for each stage and
event in acute stroke. It is essential that all stroke patients are admitted to
hospital quickly, ideally within the first 1-2 h. Ways must be established to
reduce transition times within the local setting when patients and/or emergency
services contact a variety of different physicians and hospitals. The minimum
emergency investigations necessary for differential diagnosis of stroke are
computed tomography (CT), Doppler ultrasonography, electrocardiography
(ECG) and blood tests. These must be available 24 h/day and be performed
without delay. General medical measures should be instituted as necessary, even
before CT scanning, with reference to the potential particular complications of
acute stroke. Acute stroke patients should be monitored continuously or at
frequent intermittent intervals throughout the first 24 h with respect to blood
pressure, ECG, respiration, temperature and oxygen saturation. In carefully
selected patients, thrombolysis with recombinant tissue plasminogen activator
(rt-PA) may be indicated (if approved by regional registration agencies). This
must be administered under specialist supervision, and on a dedicated intensive
care or intensive stroke care unit. Careful selection of eligible patients is
paramount. Thrombolysis with streptokinase is not recommended, due to the
excessive risk of haemorrhage. If these measures and early secondary prevention
are implemented, it will be possible to improve stroke outcome and reduce the
cost of acute and chronic stroke care. New agents for acute stroke treatment, e.g.
the neuroprotectants currently being evaluated in phase III trials, should also
contribute to improved outcomes
Keywords: ACUTE ISCHEMIC STROKE/CT/DIAGNOSIS/DOUBLE-BLIND/early
intervention/education/future therapeutic
opportunities/HYPERTENSION/INTENSIVE-CARE/INTRAVENOUS
GLYCEROL/MANAGEMENT/morbidity/mortality/PREVENTION/RANDOMI
ZED TRIAL/secondary prevention/stroke/stroke management/stroke
outcome/stroke treatment/stroke units/THERAPY/thrombolysis/thrombolytic
therapy/treatment/trials
Bath, P.M.W., Soo, J., Butterworth, R.J. and Kerr, J.E. (1996), Do acute stroke units
improve care? Cerebrovascular Diseases , 6 (6), 346-349.
Abstract: Background and Purpose: Stroke rehabilitation units have been shown to
improve mortality and reduce morbidity and hospital length of stay as compared
with conventional medical ward care. In contrast, the effectiveness of acute
stroke units (ASUs), which only provide early in-patient care, is unknomn. We
have compared ASU care with that administered on a general medical or
geriatric ward. Methods: Historical comparison of 116 consecutive patients
admitted to a new ASU during the 6-month period from February to July 1994
with 128 consecutive patients admitted to general medical or geriatric wards
during the previous 6-month period (August 1993 to January 1994). Results:
Admission baseline characteristics were similar between the two groups, As
compared with conventional general ward care, patients admitted to the ASU had
a shorter stay in casualty, 6 h (4-6) versus 7 h (4-11; 2p = 0.03); reduced length
of stay in hospital, 20 days (10-55) versus 31 days (13-80; 2p = 0.09); increased
carotid Doppler investigation, 40/94 versus 25/101 (2p = 0.013) increased
prescription of secondary prevention measures, aspirin 49/94 versus 33/101 (2p
= 0.009) or treatment of hypertension 19/50 versus 5/47 (2p = 0.004); improved
outcome, home: institution:death, 69:11:18 versus 63:13:32 (2p = 0.049).
Conclusion: ASUs appear to contribute to improved care (investigations,
secondary prevention) and outcome following stroke whilst patients spend less
time in hospital
Keywords: acute stroke
unit/aspirin/hypertension/INTENSIVE-CARE/morbidity/mortality/secondary
prevention/stroke/stroke intensive-care unit/stroke management
Rudd, A. and Wolfe, C.D.A. (1996), Developing a district stroke service.
Cerebrovascular Diseases, 6 (2), 89-96.
Abstract: Stroke is responsible for a significant proportion of acute admissions to
hospital and for long-term disability. Large amounts of money are spent on
prevention and treatment, but many of the components of management are of
unproven value. Effective organisation of care, as with other chronic diseases,
may significantly improve outcome. This paper describes the components
necessary for a stroke service, based on published evidence and practical
experience in developing such a service in an inner-city district
Keywords: CARE/CASE FATALITY/COMMUNITY/CONTROLLED
TRIAL/DISEASE/diseases/organisation of
care/PHYSIOTHERAPY/prevention/REHABILITATION/SOUTHERN
ENGLAND/stroke/treatment
Mant, J., Hicks, N., Rosenberg, W. and Sackett, D. (1996), How to use overviews of
prevention trials to treat individual patients. Cerebrovascular Diseases, 6 34-39
Keywords:
ATRIAL-FIBRILLATION/CLINICAL-TRIALS/IMPACT/MYOCARDIAL-IN
FARCTION/prevention/STROKE/trials
Easton, J.D. (1997), Epidemiology of stroke recurrence. Cerebrovascular Diseases, 7
2-4
Keywords:
ASPIRIN/CEREBRAL-ISCHEMIA/CEREBROVASCULAR-DISEASE/COM
MUNITY/epidemiology/EVENTS/INFARCTION/recurrence/recurrent
stroke/RISK/risk factors/SECONDARY
PREVENTION/stroke/TICLOPIDINE/TRANSIENT ISCHEMIC ATTACK
Sandercock, P. and Tangkanakul, C. (1997), Very early prevention of stroke recurrence.
Cerebrovascular Diseases, 7 10-15
Keywords: ACUTE ISCHEMIC STROKE/ANTICOAGULATION/CEREBRAL
INFARCTION/COMMUNITY/DISEASE/EMBOLISM/MORTALITY/NONVA
LVULAR
ATRIAL-FIBRILLATION/prevention/PROGNOSIS/recurrence/recurrent
stroke/stroke/stroke prevention/TRIAL/TRIALS
vanGijn, J. and Algra, A. (1997), Secondary stroke prevention with antithrombotic drugs:
What to do next? Cerebrovascular Diseases, 7 30-32
Keywords:
AORTIC-ARCH/ASPIRIN/CEREBRAL-ISCHEMIA/DIPYRIDAMOLE/drugs/
INTENSITY/prevention/RISK/stroke/stroke prevention/TRIAL/WARFARIN
Dyken, M.L. (1997), Aspirin with and without dipyridamole. Cerebrovascular Diseases,
7 10-16
Keywords:
ACETYLSALICYLIC-ACID/ATHEROSCLEROSIS/CEREBRAL-ISCHEMIA/
CONTROLLED TRIAL/dipyridamole/GENERATION/INDUCED
PLATELET-AGGREGATION/LOW-DOSE ASPIRIN/PERIPHERAL
VASCULAR-DISEASE/SECONDARY PREVENTION/STROKE
Butterworth, R.J., Marshall, W.J. and Bath, P.M.W. (1997), Changes in serum lipid
measurements following acute ischaemic stroke. Cerebrovascular Diseases, 7
(1), 10-13.
Abstract: Strong observational and interventional evidence exists linking
hypercholesterolaemia terolaemia and coronary heart disease, such that lowering
total cholesterol significantly reduces cardiovascular morbidity and mortality.
Increasingly, data LDL cholesterol suggest that hypercholesterolaemia is also an
important factor in cerebrovascular atherosclerosis, and possibly for subsequent
ischaemic stroke. Measurement of serum cholesterol fractions following acute
myocardial infarction must be performed within the first 48 h or delayed for 3
months because serum cholesterol levels significantly fall during the first week.
We have studied the temporal changes in serum cholesterol fractions and
triglycerides following ischaemic stroke in 72 patients. Significant falls in total
cholesterol (TC) as well as HDL and LDL cholesterol were seen during the first
week whilst levels normalised by 3 months; TC mean (SD in parentheses)
mmol/l, admission vs. 1 week, 5.54 (1.32) vs. 5.13 (1.07), n = 72, 2p 220
mm Hg, or mean arterial blood pressure (MABP) > 140 mm Hg]. As a general
guide, MABP should be lowered by decrements no larger than 15 mm Hg.
Antihypertensive agents should be chosen appropriately to avoid increases in
cerebrovascular blood volume or ICP. An antipyretic and/or an antibiotic should
be given immediately for raised temperature, possibly with a cooling blanket,
and subcutaneous or intravenous insulin should be used for markedly elevated
blood glucose levels. Prophylaxis against deep vein thrombosis and pulmonary
embolism is indicated in all acute stroke patients, but anticoagulation should be
avoided in those with large intracranial haemorrhage and in selected
neurosurgical patients. Physiotherapy as well as speech and occupational therapy
should be started as early as possible. The Need for Neurological Intensive Care:
Neurological ICUs can improve the survival and outcome of those acute stroke
patients who require intensive care. Aggressive approaches to acute stroke
therapy, e.g. hypervolaemic- hypertensive therapy, ventricular drainage,
decompressive surgery, or experimental use of thrombolytic agents, require
management in a specialized neurological ICU. About 10% of hospitalized acute
stroke patients require ICU care, which is best provided by staff with specialized
training in neurological care. The minimum requirements for optimal
neurological intensive care are a 24-hour neurologist or neurointensivist shift
sei-vice, 1 nurse per patient in attendance at all times, and facilities for advanced
haemodynamic, neurological and ICP monitoring
Keywords: ACUTE ISCHEMIC STROKE/acute stroke
management/anticoagulation/blood
pressure/cerebral/cerebrovascular/complications/computed
tomography/costs/education/embolism/EMERGENCY/emergency care
organization/evaluation/glucose/HEMISPHERIC
INFARCTION/hospital/HYPERTENSION/incidence/infarction/intracranial
pressure/INTRACRANIAL-
PRESSURE/MANAGEMENT/monitoring/mortality/myocardial/myocardial
infarction/neurointensive care/prevention/prognosis/protocols/pulmonary
embolism/RANDOMIZED CONTROLLED TRIAL/rehabilitation/risk/risk
factor/secondary prevention/stroke/stroke intensive care/stroke
units/surgery/therapy/thrombolytic
agents/thrombosis/TISSUE-PLASMINOGEN-ACTIVATOR/treatment/UNIT/U
RGENT THERAPY
Hankey, G.J. (1998), One year after CAPRIE, IST and ESPS 2 - Any changes in
concepts? Cerebrovascular Diseases, 8 1-7.
Abstract: The IST, CAPRIE and ESPS-2 have shown that large collaborative
randomised trials can be conducted in stroke medicine and can provide
statistically and clinically significant results. They, and other concurrent studies,
have highlighted the potential hazards of early anticoagulation, and the
effectiveness and safety of early (and continuous) antiplatelet therapy in limiting
early stroke recurrence and its consequences. In addition, they have shown that
antiplatelet agents with differing mechanisms of action can have different effects,
and perhaps additive effects when combined. The ESPRIT trial should delineate
the roles of oral anticoagulant therapy, and the combination of aspirin and
dipyridamole, in the prevention of stroke due to arterial disease. Future trials will
hopefully determine the role in secondary stroke prevention of inhibitors of the
platelet GPIIb/IIIa complex (the final common pathway of platelet aggregation),
the combination of anitplatelet agents with different mechanisms of action (e.g.
aspirin and clopidogrel, aspirin and IIb/IIIa inhibitors), the combination of
antiplatelet agents and oral anticoagulants (which may simultaneously modify
platelet function and fibrin production), and the combination of antithrombotic
and cholesterol-lowering (statin) medications
Keywords:
aggregation/anticoagulant/ANTICOAGULANTS/anticoagulation/ANTIPLATE
LET/antiplatelet agents/antiplatelet therapy/antithrombotic
therapy/ASPIRIN/Australia/CEREBRAL- ISCHEMIA/clinical
trials/clopidogrel/DIPYRIDAMOLE/fibrin/new concepts/platelet
aggregation/PLATELET-AGGREGATION/prevention/recurrence/safety/stroke/
STROKE PREVENTION/stroke
prevention/THERAPY/TICLOPIDINE/TRANSIENT ISCHEMIC
ATTACKS/trials
Auburger, G. (1998), New genetic concepts and stroke prevention. Cerebrovascular
Diseases, 8 28-32.
Abstract: So far, stroke genetics has the reputation of daunting complexity and
heterogeneity. However, progress through efforts at studying the human genome
has provided novel technologies and focus, and 12 stroke genes or loci have
already been identified in the last years, usually through the study of large
pedigrees. However, particularly little is known about the ischemic form of
stroke, and only recently could one chromosomal locus be shown to exert a
major effect on stroke latency and outcome - through QTL studies in mouse
strains. Whether the outstanding role of this one gene locus is also true in
humans should be tested in linkage analyses of large pedigrees. The
characterization of such families will probably be essential for progress in
molecular genetics of ischemic stroke as well as being a challenge for clinical
stroke centers
Keywords: ADULT-ONSET/BLOOD-PRESSURE/CEREBRAL CAVERNOUS
MALFORMATION/CEREBROVASCULAR-DISEASE/FAMILIAL
HEMIPLEGIC MIGRAINE/genes/genetic/HEMORRHAGE/HUMAN
HYPERTENSION/ischemic stroke/linkage/LOCUS/MISSENSE
MUTATION/NOTCH3 MUTATIONS/prevention/QTL/stroke/stroke prevention
Al Rajeh, S., Larbi, E.B., Bademosi, O., Awada, A., Yousef, A., Al Freihi, H. and
Miniawi, H. (1998), Stroke register: Experience from the Eastern Province of
Saudi Arabia. Cerebrovascular Diseases, 8 (2), 86-89.
Abstract: A stroke registry was established in the Eastern Province of Saudi Arabia with
an estimated population of 750,000 inhabitants of whom 545,000 are Saudi
citizens. The register started in July 1989 and ended in July 1993. The Gulf war
led to its interruption from August 1990 to August 1991. Four hundred
eighty-eight cases (314 males, 174 females) of first- ever strokes affecting Saudi
nationals were registered over the 3-year period. The crude incidence rate for
first-ever strokes was 29.8/100,000/year (95% CI: 25.2-34.3/100,000 year).
When standardized to the 1976 US population, it rose up to 125.8/100,000/year.
Ischemic strokes (69%) predominated as in other studies but subarachnoid
hemorrhage (SAH) was extremely rare (1.4%). The important risk factors were:
systemic hypertension (38%), diabetes mellitus (37%), heart disease (27%),
smoking (19%) and family history of stroke (14%), Previous transient ischemic
attacks (3%) and carotid bruits (1%) were uncommon. The 30-day case fatality
rate was 15%, The study showed that the age-adjusted stroke incidence rate for
Saudis in this region is lower than the rates reported in developed countries but
within the range reported worldwide. The pattern of stroke in Saudi Arabia is not
different from that reported in other communities with the exception of the low
Incidence of SAH. The risk factors are similar to findings in other studies except
for the high frequency of diabetes mellitus in our cases, The lower mortality rate
was probably due to the younger age of the population and the availability of free
medical services for management of cases
Keywords: age/carotid/case fatality/cerebrovascular
disease/CEREBROVASCULAR-DISEASE/COMMUNITY/diabetes/diabetes
mellitus/epidemiology/heart/hemorrhage/history/hypertension/incidence/mortalit
y/OXFORDSHIRE/PATTERN/PREVENTION/risk/risk factors/Saudi
Arabia/smoking/stroke/subarachnoid hemorrhage/transient
Dyken, M.L. (1998), Reply - Aspirin dose in secondary prevention of stroke.
Cerebrovascular Diseases, 8 (6), 361-362
Keywords: DIPYRIDAMOLE/prevention/secondary prevention/stroke/TRIAL
Meyer, B.J. (1998), Antithrombotic drugs: Insights from cardiology. Cerebrovascular
Diseases, 8 19-27.
Abstract: The primary purpose of this overview is to provide an update on the newer
antiplatelet drugs evaluated in clinical trials and introduced in clinical practice of
modern cardiology. Despite the remarkable clinical developments with the use of
new antiplatelet drugs, several fundamental issues remain unresolved. Some of
the observed safety/efficacy problems in major clinical trials can be directly
attributed to the lack of careful phase II studies where issues such as monitoring,
pharmacological profiles, and individual response variations were not considered
sufficiently. Nevertheless, none of the available antiplatelet agents meet all the
criteria of an ideal antiplatelet agent. Aspirin has been the standard reference
agent in cardiovascular disease. However, it is a weak and nonselective
antiplatelet compound and is unable to interfere substantially with the
thrombogenic activity of a fresh mural thrombus of a stenosed vessel. The newer
antiplatelet drug classes such as the ADP receptor blockers (ticlopidine,
clopidogrel) and the platelet glycoprotein IIb/IIIa receptor inhibitors produce
their therapeutic effects by distinct mechanisms which differ from aspirin. Large
clinical trials have documented their efficacy in acute coronary syndromes
associated with intracoronary thrombus formation. The future challenge is to
evaluate long-term treatment strategies which are equally safe but distinctly more
effective than aspirin, e.g. a combination therapy with aspirin and clopidogrel or
oral GP IIb/IIIa receptor antagonists
Keywords: ABCIXIMAB/acute coronary syndromes/ADP/antiplatelet
agents/antiplatelet drugs/aspirin/C7E3 FAB/cardiovascular disease/clinical
trials/clopidogrel/coronary artery disease/CORONARY
INTERVENTION/DISEASE/formation/GLYCOPROTEIN IIB/IIIA
ANTAGONIST/MYOCARDIAL-INFARCTION/platelet glycoprotein IIb/IIIa
receptor inhibitors/PREVENTION/RANDOMIZED
TRIAL/STROKE/thienopyridines/thrombus/ticlopidine/treatment/trials/UNSTA
BLE ANGINA
Devuyst, G., Paciaroni, M. and Bogousslavsky, J. (1999), Secondary stroke prevention:
A European perspective. Cerebrovascular Diseases, 9 29-36
Keywords: ATRIAL-FIBRILLATION/CAROTID
ENDARTERECTOMY/CHOLESTEROL/EVENTS/METAANALYSIS/PATEN
T FORAMEN OVALE/prevention/RECURRENCE/RISK/stroke/stroke
prevention/THERAPY/TICLOPIDINE ASPIRIN STROKE
[Anon]. (1999), Antiplatelets, therapy for stroke prevention. Cerebrovascular Diseases,
9 41-45
Keywords: prevention/stroke/stroke prevention/therapy
[Anon]. (1999), Anticoagulant therapy and stroke prevention. Cerebrovascular Diseases,
9 47-52
Keywords: prevention/stroke/stroke prevention/therapy
Cheung, R.T.F., Li, L.S.W., Mak, W., Tsang, K.L., Lauder, I.J., Chan, K.H. and Fong,
G.C.Y. (1999), Knowledge of stroke in Hong Kong Chinese. Cerebrovascular
Diseases, 9 (2), 119-123.
Abstract: A random telephone survey on knowledge of stroke was conducted in 1,238
Hong Kong Chinese. Most respondents realized that effective treatment was
available, that stroke was preventable and that it could be fatal or disabling.
Sudden unilateral limb weakness, sudden speech and language disturbances, and
sudden vertigo and clumsiness were better recognized than other warning
symptoms of stroke. A slightly better recognition of symptoms of stroke was
seen in those with a belief of knowing about stroke, providing a correct
description of stroke, those with a positive household history of stroke and those
with a better knowledge of potential risk factors. Most respondents would choose
desirable actions if stroke was suspected in their family members or themselves.
Friends and relatives, newspapers and magazines, and mass media provided the
major sources of their knowledge
Keywords: Chinese/history/Hong Kong/knowledge/PREVENTION/risk/risk
factors/stroke/survey/THROMBOLYSIS/treatment
[Anon]. (1999), Stroke prevention in atrial fibrillation and other cardiac sources of
embolism. Cerebrovascular Diseases, 9 53-61
Keywords: ANTICOAGULANT-THERAPY/ANTITHROMBOTIC
TREATMENT/ASPIRIN/atrial
fibrillation/embolism/fibrillation/MANAGEMENT/prevention/RANDOMIZED
TRIALS/TRANSIENT ISCHEMIC ATTACKS/WARFARIN
van Gijn, J. and Algra, A. (1999), Secondary stroke prevention with drugs: Single or
combined therapy? Cerebrovascular Diseases, 9 24-28
Keywords:
ACETYLSALICYLIC-ACID/ANTICOAGULANT-THERAPY/CEREBRAL-IS
CHEMIA/CONTROLLED TRIAL/DIPYRIDAMOLE/drugs/LOW-DOSE
ASPIRIN/Netherlands/prevention/stroke/stroke
prevention/therapy/TICLOPIDINE/WARFARIN
Sacco, R.L. (1999), Secondary prevention of ischemic stroke: A 1998 US perspective.
Cerebrovascular Diseases, 9 37-44
Keywords: ASPIRIN/CAROTID
ENDARTERECTOMY/INFARCTION/ischemic/ischemic
stroke/LEHIGH-VALLEY/MORTALITY/prevention/RECURRENCE/RISK-FA
CTORS/STENOSIS/stroke/TICLOPIDINE/WARFARIN
Bornstein, N.M., Gur, A.Y., Fainshtein, P. and Korczyn, A.D. (1999), Stroke during
sleep: Epidemiological and clinical features. Cerebrovascular Diseases, 9 (6),
320-322.
Abstract: Stroke during sleep is an unexplored area of vascular neurology and its
pathogenesis; clinical significance and prevention still remain uncertain. The aim
of our study was to determine the epidemiological and clinical patterns of
ischemic stroke occurring during sleep. Consecutive patients (n = 1822) with
acute ischemic stroke recorded in the Tel Aviv Stroke Register were studied.
Stroke during sleep was determined whenever focal neurological deficit was
verified to have occurred while the patient had been asleep. The comparisons
between patients with stroke during sleep and while awake were performed using
the t test with Bonferroni correction and the chi(2) test for age, sex, vascular risk
factors (i.e. ischemic heart disease, myocardial infarction, atrial fibrillation,
arterial hypertension, hyperlipidemia, diabetes mellitus, peripheral vascular
disease, smoking), vascular distribution (carotid versus vertebrobasilar) and
severity of stroke (mild, moderate or severe). Data regarding the onset of stroke
(during sleep or while awake) were available for 1,671 patients. A minority of
strokes occurred during sleep (n = 311, 18.6%), and stroke during sleep was
severer (chi(2) = 11.9, p 30 mu mol/l) and 20.2% in the other group (log- rank test
7.5; p = 0.0062). After adjustment for age, sex, high blood pressure, diabetes,
heart disease, previous cerebrovascular disease, smoking and serum cholesterol,
the relative risk of vascular event for patients above compared with those below
the 75th percentile of serum homocyst(e)ine was 2.8 (Cl 95% 1.3-6; p = 0.01).
Conclusion: Hyperhomocyst(e)inemia is a significant risk factor for vascular
events after ischemic stroke. This finding is independent of other risk factors
such as hypertension, and may have therapeutic relevance in the secondary
prevention of vascular diseases in stroke patients, Copyright (C) 2001 S. Karger
AG, Basel
Keywords: age/arterial/blood pressure/BRITISH MEN/cerebrovascular/cerebrovascular
disease/cholesterol/deep venous
thrombosis/DETERMINANTS/diabetes/DISEASE/diseases/ELEVATED
PLASMA HOMOCYST(E)INE/heart/heart disease/high blood
pressure/homocyst(e)ine/HOMOCYSTEINE LEVELS/HORDALAND
HOMOCYSTEINE/HYPERHOMOCYSTEINEMIA/hypertension/ischemic/isch
emic heart disease/ISCHEMIC STROKE/peripheral arterial
disease/prevention/recurrence/relative risk/risk/risk factor/risk
factors/secondary/secondary prevention/serum/sex/smoking/Spain/stroke/stroke
recurrence/thrombosis/vascular/vascular event/VENOUS
THROMBOSIS/VITAMIN STATUS
Lechat, P., Lardoux, H., Mallet, A., Sanchez, P., Derumeaux, G., Lecompte, T., Maillard,
L., Mas, J.L., Mentre, F., Pousset, F., Lacomblez, I., Pisica, G., Solbes-Latourette,
S., Raynaud, P. and Chaumet-Riffaud, P. (2001), Anticoagulant
(fluindione)-aspirin combination in patients with high-risk atrial fibrillation - A
randomized trial (fluindione, fibrillation auriculaire, aspirin et contraste spontane;
FFAACS). Cerebrovascular Diseases, 12 (3), 245-252.
Abstract: Background: A combination of low-dose aspirin with anticoagulants may
provide better protection against thromboembolic events compared to
anticoagulants alone in high- risk patients with atrial fibrillation. Objective:
Evaluation of the preventive efficacy against nonfatal thromboembolic events
and vascular deaths of the combination of the oral anticoagulant fluindione and
aspirin (100 mg) in patients with high-risk atrial fibrillation. Methods: A
multicenter, placebo- controlled, double-blind, randomized trial was conducted at
49 investigating centers in France. Atrial fibrillation patients with a previous
thromboembolic event or older than 65 years and with either a history of
hypertension, a recent episode of heart failure or decreased left ventricular
function were included in the study. Patients were treated with fluindione plus
placebo (i.e. anticoagulant alone) or fluindione plus aspirin (i.e. combination
therapy), with an international normalized ratio target of between 2 and 2.6. The
combined primary endpoint was stroke (ischemic or hemorrhagic), myocardial
infarction, systemic arterial emboli or vascular death. The secondary endpoint
was the incidence of hemorrhagic complications. Results: The 157 participants
(average age 74 years; 52% women; 42% with paroxysmal atria[ fibrillation)
were followed for an average of 0.84 years. Three nonfatal thromboembolic
events were observed (1 in the anticoagulation group, 2 in the combination group)
and 6 patients died (3 in the anticoagulation group, 3 in the combination group),
none of them from a thromboembolic complication. However, 3 deaths were
secondary to severe hemorrhagic complications (1 in the anticoagulation group, 2
in the combination group). Nonfatal hemorrhagic complications occurred more
often in the combination group (n = 10, 13.1%) compared to the anticoagulation
group (n = 1, 1.2%) (p = 0.003). Conclusion:The combination of aspirin with
anticoagulant is associated with increased bleeding in elderly atrial fibrillation
patients. The effect on thromboembolism and the overall balance of benefit to
risk could not be accurately assessed in this study due to the limited number of
ischemic events. Copyright(C) 2001 S. Karger AG, Basel
Keywords: age/anticoagulant/anticoagulants/anticoagulation/aspirin/atrial
fibrillation/bleeding/bleeding complications/combination/combination
therapy/complications/death/elderly/emboli/fibrillation/fluindione/heart/heart
failure/high risk/history/hypertension/incidence/infarction/international
normalized ratio/ischemic/left
ventricular/METAANALYSIS/myocardial/myocardial
infarction/PLACEBO/PREVENTION/primary/protection/randomized/randomize
d trial/risk/secondary/SPONTANEOUS ECHO
CONTRAST/STROKE/THERAPY/thromboembolic
complications/thromboembolic
events/THROMBOEMBOLISM/trial/vascular/WARFARIN/women
Bogousslavsky, J. (2001), Benefit of ADP receptor antagonists in atherothrombotic
patients: New evidence. Cerebrovascular Diseases, 11 5-10.
Abstract: In the Clopidogrel versus Aspirin in Patients at Risk of Ischaemic Events
(CAPRIE) trial, clopidogrel showed a statistically significant superiority over
aspirin in the prevention of ischaemic stroke, myocardial infarction and vascular
death in patients with symptomatic atherosclerosis. More recently, post-hoc
analysis of the data also showed that repeat hospitalization for ischaemic or
bleeding events was decreased with clopidogrel compared with aspirin.
Complementary analyses show that the benefit of clopidogrel over aspirin is
amplified in a large population at very high risk of further atherothrombotic
events (diabetics, patients with high cholesterol, and patients with previous
manifestations of atherothrombosis). A potential clinically useful advantage of
clopidogrel is its low propensity for adverse interaction with
angiotensin-converting enzyme (ACE) inhibitors, contrary to what may be seen
with aspirin, as observed in a post-hoc CAPRIE analysis. The putative
aspirin-ACE inhibitor interaction is being tested prospectively in the Warfarin
and Antiplatelet Therapy in Chronic Heart Failure (WATCH) trial - a
randomized comparison of warfarin, clopidogrel and aspirin in patients with
chronic heart failure. The good gastrointestinal tolerance of clopidogrel seen in
CAPRIE has been further demonstrated in a study in healthy volunteers where
there was a markedly lower gastroduodenal erosion score after 8 days'
administration of clopidogrel 75 mg/day compared with aspirin 325 mg/day (p 70% by angiogram) stenosis should receive carotid
endarterectomy, provided the operative risk is 2.0) for at least 3 weeks before and 4 weeks after successful CV. In all
patients, exclusion of internal carotid artery stenosis and atrial thrombus was
performed prior to CV. Five unilateral 1-hour transcranial Doppler ME
monitorings over the middle cerebral artery were performed (1) before CV, and
(2) immediately, (3) 4-6 h, (4) 24 h, and (5) 2-4 weeks after CV. Total absence of
circulating ME was found before CV as well as during a cumulative monitoring
time of 115 h after successful CV. Electrical CV of AF after at least 3 weeks of
effective anticoagulation is not associated with occurrence of cerebral circulating
ME. This finding requires further investigation including high-risk patients with
AF undergoing CV based on different treatment protocols. Copyright (C) 2001 S.
Karger AG, Basel
Keywords: AF/aged/ANTICOAGULATION/APPENDAGE
FUNCTION/ASYMPTOMATIC EMBOLIZATION/atrial
fibrillation/cardioversion/carotid/carotid artery/carotid artery
stenosis/CAROTID-ARTERY STENOSIS/cerebral/cerebral artery/CEREBRAL
MICROEMBOLISM/diagnostic/Doppler/embolism/fibrillation/formation/Germa
ny/high risk/INR/INTENSITY TRANSIENT SIGNALS/internal carotid
artery/men/microemboli/middle cerebral artery/monitoring/oral
anticoagulation/prevention/protocols/RISK/stenosis/stroke/THERAPY/thrombus
/transcranial/TRANSCRANIAL DOPPLER/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/treatment/ultrasonography
Diez-Tejedor, E. and Fuentes, B. (2001), Acute care in stroke: Do stroke units make the
difference? Cerebrovascular Diseases , 11 31-39.
Abstract: The consideration of stroke as a medical emergency and the development of
new specific treatments to be applied in a narrow therapeutic window have
shown the need to establish an adequate organization system for the management
of stroke. It should be considered as an integral process both outside and inside
the hospital. General care is essential and must already start outside the hospital,
and comprises respiratory and cardiac care, fluid and metabolic management,
especially blood glucose control, avoiding the administration of glucose
solutions, blood pressure control, early treatment of hyperthermia and prevention
and treatment of neurologic and systemic complications. In the early 70s, the
first stroke units (SU) were established as intensive-care SU, but failed to show
improvement in terms of reduction of mortality-morbidity. Nowadays, the
concept has changed to a non-intensive-ca re SU. The benefit of these SU has
been amply demonstrated in terms of reduction in mortality and in long
institutionalization, as well as better functional outcome compared with general
wards, and the efficacy of a neurology ward compared to a general medicine
department has also been shown, but at the moment there are no studies
analyzing the differences between a stroke team (ST) in a department of
neurology and a SU. In this regard, we have performed a sequential analysis
comparing both SU and ST and demonstrated a reduction in length of stay,
complications and acute care costs with an improvement in functional state at
hospital discharge, a reduction in the discharge to nursing homes with an
increase in patients translated into rehabilitation wards. With these data, we can
conclude that SU, not ST are the most effective organizational model for acute
stroke management. Definitely, the SU make the difference. Copyright (C) 2001
S. Karger AG, Basel
Keywords: acute/acute stroke/acute stroke care/acute stroke
management/administration/ADMISSION/BENEFITS/blood pressure/blood
pressure control/cardiac/cerebral
infarction/complications/control/COSTS/development/essential/glucose/hospital/
hyperthermia/intensive care/INTENSIVE-CARE/ISCHEMIC STROKE/length
of stay/MANAGEMENT/medical/MORTALITY/neurology/nursing/nursing
homes/outcome/prevention/RANDOMIZED CONTROLLED
TRIAL/REHABILITATION/Spain/stroke/stroke management/stroke team/stroke
unit/stroke units/treatment
Hacke, W. (2002), From CURE to MATCH: ADP receptor antagonists as the treatment
of choice for high-risk atherothrombotic patients. Cerebrovascular Diseases, 13
22-26.
Abstract: Patients with a clinical manifestation of atherothrombosis such as a recent
ischaemic cerebrovascular event are at high risk of subsequent events.
Atherothrombosis often reflects disseminated disease; thus, further events may
occur not only in the same arterial distribution but also in other vascular beds. To
achieve adequate secondary prevention in these patients, long- term antiplatelet
therapy with consistent benefit across the atherothrombosis spectrum is required.
In the CAPRIE (Clopidogrel versus Aspirin in Patients at Risk of Ischaemic
Events) Trial, clopidogrel (clopidogrel bisulphate) was superior to acetylsalicylic
acid (ASA) in reducing the combined risk of ischaemic stroke (IS), myocardial
infarction (MI) or vascular death in patients with symptomatic atherosclerosis.
Post hoc analyses demonstrated that the benefit of clopidogrel was amplified in
high-risk patients, including patients with a history of previous ischaemic events,
diabetic patients and patients with hypercholesterolaemia. The synergistic
antiplatelet effect produced by using clopidogrel on top of ASA may be
beneficial in high-risk patients. The benefit of dual antiplatelet therapy was
recently examined in the CURE (Clopidogrel in Unstable Angina to Prevent
Recurrent Events) Study, which demonstrated that long-term treatment with
clopidogrel on top of standard therapy including ASA was superior to standard
therapy alone in the prevention of major vascular ischaemic events in patients
with unstable angina or non-Q-wave MI. The ongoing MATCH (Management of
Atherothrombosis with Clopidogrel in High-risk Patients with Recent Transient
Ischaemic Attack or Ischaemic Stroke) trial will evaluate the efficacy and safety
of clopidogrel plus ASA versus clopidogrel alone in patients with recent transient
ischaemic attack (TIA) or IS and with at least one additional risk factor.
Approximately 7,600 patients will be enroled, with treatment and follow-up for
each patient lasting 18 months. The primary combined efficacy endpoint will be
the first occurrence of an event in the composite of IS, MI, vascular death or
rehospitalization for an acute ischaemic event during the follow-up period.
MATCH will explore the potential benefit of clopidogrel in high-risk stroke/TIA
patients and together with CAPRIE and CURE could provide further evidence of
the long-term benefit of clopidogrel in patients with major atherothrombotic
manifestations. Copyright (C) 2002 S. Karger AG, Basel
Keywords: acetylsalicylic acid/acute/ADP/ADP receptor/angina/antiplatelet/antiplatelet
therapy/arterial/ASPIRIN/atherosclerosis/atherothrombosis/cerebrovascular/cere
brovascular
event/clopidogrel/CLOPIDOGREL/COMBINATION/death/disease/Germany/hi
gh
risk/history/hypercholesterolaemia/infarction/INHIBITION/ischaemic/ischaemic
stroke/myocardial/myocardial infarction/prevention/primary/risk/risk factor/risk
of ischaemic stroke/safety/secondary/secondary
prevention/STENT/stroke/THERAPY/THROMBOGENESIS/TIA/TICLOPIDIN
E/transient/transient ischaemic attack/treatment/trial/unstable angina/vascular
Alberts, M.J. (2002), Secondary prevention of stroke and the expanding role of the
neurologist. Cerebrovascular Diseases, 13 12-16.
Abstract: Stroke is the leading cause of adult disability and dependency in western
society. Following stroke, the risk of myocardial infarction (MI) is increased by a
factor of around 2-3 compared with baseline. Indeed, after the first 30 days,
stroke survivors are more likely to die from a cardiac event than from a
cerebrovascular event. In patients with atherothrombotic stroke, preventing
subsequent manifestations of the underlying disease is therefore an important
therapeutic goal. A number of options have been shown to reduce the risk of
stroke. Aggressively controlling stroke risk factors, such as hypertension,
diabetes and smoking, should provide significant benefit in reducing stroke risk;
however, it is difficult to realize the full potential of these approaches in routine
clinical practice. A number of classes of medication can reduce the risk of stroke
and other vascular events, including antiplatelet agents, anticoagulants,
angiotensin-converting enzyme inhibitors and statins. Several antiplatelet agents
are approved to reduce the risk of recurrent stroke, although only clopidogrel and
acetylsalicylic acid (ASA) are approved for the reduction of both stroke and MI
in such patients. In the CAPRIE study, clopidogrel showed a statistically
significant relative risk reduction of 8.7% (p = 0.043) compared with ASA for
the composite endpoint of ischaemic stroke, MI or vascular death. Evidence from
animal studies, ex vivo models in humans, and patients undergoing coronary
stent insertion or patients with unstable angina/non-Q-wave MI clearly
demonstrates the synergistic antiplatelet effect of using clopidogrel with ASA. In
summary, most patients with an ischaemic stroke should be treated with an
antiplatelet agent to reduce their risk of recurrent stroke, MI, or vascular death.
The use of aggressive antiplatelet therapy has the potential to become a new
paradigm for managing patients with vascular disease due to atherothrombosis.
Copyright (C) 2002 S. KargerAG, Basel
Keywords: acetylsalicylic acid/angiotensin converting enzyme
inhibitors/angiotensin-converting enzyme
inhibitors/animal/anticoagulants/antiplatelet/antiplatelet agents/antiplatelet
therapy/ASPIRIN/atherothrombosis/BENEFIT/CAPRIE
study/cardiac/CAROTID
ENDARTERECTOMY/cerebrovascular/cerebrovascular event/clinical
practice/CLOPIDOGREL/coronary
stent/death/dependency/diabetes/DIPYRIDAMOLE/disability/disability and
dependency/DISEASE/humans/hypertension/infarction/ischaemic/ischaemic
stroke/myocardial/myocardial infarction/neurologist/prevention/recurrent
stroke/relative risk/RISK/risk
factors/smoking/statins/STENT/stroke/therapy/TICLOPIDINE/use/vascular/vasc
ular disease/vascular events
Schmidt, R., Schmidt, H., Kapeller, P., Lechner, A. and Fazekas, F. (2002), Evolution of
white matter lesions. Cerebrovascular Diseases, 13 16-20.
Abstract: A 3-year follow-up of 273 participants (mean age 60 years) of the Austrian
Stroke Prevention Study provides first information on the rate, clinical predictors
and cognitive consequences of MRI white matter lesions (WML) in elderly
individuals without neuropsychiatric disease. Lesion progression was found in
17.9% of individuals over a time period of 3 years. Diastolic blood pressure and
early confluent or confluent white matter hyperintensities at baseline were the
only significant predictors of white matter hyperintensity progression. Genetic
association studies in the setting of the Austrian Stroke Prevention Study provide
first evidence for genetic susceptibility factors for progression of WML. We
observed associations with the paraoxonase Leu-->Met 54 polymorphism and
with the M235T polymorphism of the angiotensinogen gene. Lesion progression
had no influence on the course of neuropsychologic test performance over the
observational period, but the statistical power of this analysis was low. Copyright
(C) 2002 S. Karger AG, Basel
Keywords: 3-YEAR
FOLLOW-UP/ABNORMALITIES/age/angiotensinogen/Austria/AUSTRIAN
STROKE PREVENTION/blood
pressure/cognition/disease/elderly/gene/genetic/genetics/HYPERINTENSITIES/
INDIVIDUALS/MRI/PARAOXONASE/polymorphism/predictors/progression/s
tatistical/vascular risk factors/white matter/white matter lesions
Chang, Y.J., Ryu, S.J. and Lin, S.K. (2002), Carotid artery stenosis in ischemic stroke
patients with nonvalvular atrial fibrillation. Cerebrovascular Diseases, 13 (1),
16-20.
Abstract: Purpose: To study the prevalence, severity and clinical relevance of carotid
atherosclerosis in ischemic stroke patients with nonvalvular atrial fibrillation
(NVAF). Material and Methods: We reviewed carotid duplex sonography,
computed tomography (CT) and clinical features in 103 consecutive ischemic
stroke patients with NVAF. Both sonography and CT were performed within 3-7
days after stroke. There were 64 men and 39 women with a mean age at stroke
onset of 69 years. Results: Highgrade (greater than or equal to50%) stenosis of
the extracranial carotid artery was detected in 25 patients (24.3%), including 11
patients (10.6%) with internal carotid artery (ICA) occlusion. In 15 (66.7%) of
the patients who had high-grade carotid stenosis; the lesion was ipsilateral to the
infarct, including 8 ICA occlusions. Patients with high-grade stenosis smoked
more cigarettes (p 1.1 relative value units)
were 1.29 (95% Cl, 0.69-2.47) for IgG and 1.31 (95% Cl, 0.69-2.55) for IgA by
matched-pair analyses, and 1.42 (95% Cl, 0.69-2.98) for IgG and 1.57 (95% Cl,
0.76-3.35) for IgA after adjustments for conventional risk factors and the
inflammatory marker, soluble intercellular adhesion molecule-1. We explored
the possibility that the risk of ischemic stroke may increase in parallel to
increasing antibody titers, but did not demonstrate any significant association.
Conclusions: Serological evidence for prior infection with C. pneumoniae did not
emerge as an independent risk factor for incident ischemic stroke among patients
at high risk due to pre-existing vascular disease. Copyright (C) 2003 S. Karger
AG, Basel
Keywords: age/antibodies/antibody/atherosclerosis/ATHEROSCLEROTIC
PLAQUE/CAROTID-ARTERY/Chlamydia pneumoniae/coronary heart
disease/CORONARY-ARTERY DISEASE/disease/heart/heart
disease/HEART-DISEASE/HELICOBACTER-PYLORI/high
risk/infarction/INFARCTION PREVENTION
BIP/infection/INFECTION/ischemic/ischemic
stroke/Israel/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/NESTED
CASE-CONTROL/prevention/risk/risk factor/risk
factors/secondary/SECONDARY PREVENTION/stroke/trial/vascular/vascular
disease
Rothwell, P.M. (2003), Incidence, risk factors and prognosis of stroke and TIA: The
need for high-quality, large-scale epidemiological studies and meta-analyses.
Cerebrovascular Diseases, 16 2-10.
Abstract: Stroke is a considerable clinical, social and economic burden. In recent clinical
trials, a number of strategies have been shown to reduce the risk of stroke and
transient ischaemic attack (TIA) in both primary and secondary prevention
settings. Whether these treatments are leading to a significant reduction in the
incidence of first and recurrent stroke in the clinic, however, remains unclear due
to a paucity of high-quality epidemiological data. A similar lack of reliable
epidemiological studies has undermined our understanding of the relationship
between many potentially important vascular risk factors and stroke risk.
Improvement in our knowledge of stroke epidemiology is a prerequisite for the
planning of stroke services, the effective application of current stroke prevention
strategies, the development of new strategies, and our understanding of the
mechanisms of stroke. Future studies must take into account the clinical and
pathological heterogeneity of TIA and stroke, and must be powered to allow
subtype differences in risk factor relationships and prognosis to be determined
reliably. In many cases, this will require meta-analysis of detailed individual
patient data from multiple independent studies. Copyright (C) 2003 S. Karger
AG, Basel
Keywords: ATRIAL- FIBRILLATION/BLOOD-PRESSURE/CASE- FATALITY
RATES/CEREBRAL
INFARCTION/CEREBROVASCULAR-DISEASE/cholesterol/clinical
trials/COMMUNITY-STROKE/development/England/epidemiology/hypertensio
n/incidence/ischaemic/knowledge/mechanisms/meta-analysis/NATURAL-
HISTORY/prevention/primary/primary and secondary
prevention/prognosis/recurrent stroke/risk/risk factor/risk
factors/secondary/secondary prevention/SECULAR TRENDS/stroke/stroke
prevention/SYMPTOMATIC CAROTID STENOSIS/TIA/transient/transient
ischaemic attack/TRANSIENT ISCHEMIC ATTACKS/trials/vascular/vascular
risk/vascular risk factors
Ferro, J.M., Correia, M., Rosas, M.J., Pinto, A.N. and Neves, G. (2003), Seizures in
cerebral vein and dural sinus thrombosis. Cerebrovascular Diseases, 15 (1-2),
78-83.
Abstract: To describe early symptomatic and late seizures in a cohort of patients with
acute cerebral vein and dural sinus thrombosis (CVDST) and to identify their
determinants, we performed a prospective registry and follow-up study of
CVDST patients admitted to 20 Portuguese hospitals, from June 1995 to June
1998. Of 91 registered patients, 31 (34%) had early symptomatic seizures; 29
(31.9%) as a presenting feature and 2 (2.1%) after admission. Early symptomatic
seizures were more frequent in patients with motor and sensory deficits and in
those with focal oedema/ischaemic infarcts or haemorrhages on admission
CT/MR. On multivariate logistic regression analysis, sensory defects (OR = 7.8;
95% CI = 0.8-74.8) and a parenchymal lesion on admission CT/MR (OR = 3.7,
95% CI = 1.4-9.4) were found to be significant predictors of early symptomatic
seizures. Seizures were directly related to acute death in 2 patients. Eight (9.5%)
patients had late seizures, which were multiple in 4 (4.8%). Late seizures were
more frequent in patients with early symptomatic seizures and with haemorrhage
on admission CT/MR. Neither early symptomatic seizures nor late seizures were
related to functional prognosis at the last follow-up (median = 1 year). There is a
moderate risk of seizure recurrence early in the course and during the first year
after CVDST. Seizures can be a cause of acute death, but might not have an
independent influence on functional outcome. Pharmacological prevention of
seizures after CVDST should probably be limited to patients with early
symptomatic seizures and cerebral lesions on admission CT/MR. Copyright (C)
2003 S. Karger AG, Basel
Keywords: acute/ADULTS/cerebral/cerebral vein/death/dural
sinus/EPILEPSY/epilepsy/focal/haemorrhage/hospitals/outcome/predictors/preve
ntion/prognosis/recurrence/registry/risk/RISK-FACTORS/seizure/STROKE/thro
mbosis/VENOUS THROMBOSIS
Ringleb, P.A. and Hacke, W. (2003), Antiplatelet therapy in stroke prevention.
Cerebrovascular Diseases, 15 43-48
Keywords: ASPIRIN/CLOPIDOGREL/CORONARY-ARTERY
STENTS/DISEASE/HIGH-RISK/ISCHEMIC
EVENTS/MYOCARDIAL-INFARCTION/PLACEMENT/prevention/RANDO
MIZED- TRIALS/stroke/stroke prevention/therapy/TICLOPIDINE
Musolino, R., La Spina, P., Granata, A., Gallitto, G., Leggiadro, N., Carerj, S.,
Manganaro, A., Tripodi, F., Epifanio, A., Gangemi, S. and Di Perri, R. (2003),
Ischaemic stroke in young people: A prospective and long-term follow-up study.
Cerebrovascular Diseases, 15 (1-2), 121-128.
Abstract: Background: A few studies have comprehensively assessed the epidemiology,
aetiology, prognosis, and secondary prevention of ischaemic stroke in young
adults. To gain further information on this field, we have prospectively studied a
hospital-based series of young adults with a first-ever episode of cerebral
ischaemia (CI). Methods: Sixty consecutive patients aged 17-45 with ischaemic
stroke (55 patients) or transient ischaemic attack within 24 h before hospital
admission were recruited and investigated by a standardized rigorous protocol.
The patients were followed up for greater than or equal to 1 year after hospital
discharge. Arbitrary doses of aspirin 100 mg/d or ticlopidine 250 mg b.i.d. in
case of intolerance to aspirin were given for the secondary prevention.
Adjusted-dose oral anticoagulation (INR target 2.5) was used in the presence of
cardioembolism or hypercoagulable states. Endpoints included the residual
disability, rated by modified Rankin Scale (RS) and Barthel Index (BI), and
post-stroke recurrence. Results: CI was associated with two or more risk factors
in 61.6% of patients. Cigarette smoking was more frequently associated with
male gender (p 3) in 11% of the patients, slight to moderate (1 greater than or equal
to RS less than or equal to 3) in 59% and absent in 30% (RS = 0). Functional
disability was relatively low with 50% of the patients independent (BI greater
than or equal to 95), 38.9% partially dependent (BI 60 to 86), and 11.1% fully
dependent (BI 0.50 (OR, 1.403; p
= 0.0001) predicted an increased risk of experiencing SVT, Left ventricular
ejection fraction, New York Heart Association functional class, and treatment
with digoxin vs placebo were not related to the occurrence of SVT. After
adjustment for other risk factors, development of SVT predicted a greater risk of
subsequent total mortality (risk ratio [RR] = 2.451; p = 0.0001), stroke (RR =
2.352; p = 0.0001), and hospitalization for worsening CHF (RR = 3.004; p =
0.0001). Conclusion: In CHF patients in sinus rhythm, older age, male sex,
longer duration of CHF, and increased cardiothoracic ratio predict an increased
risk for experiencing SVT. Development of SVT is a strong independent
predictor of mortality, stroke, and hospitalization for CHF in this population.
Prevention of SVT may prolong survival and reduce morbidity in CHF patients
Keywords: age/atrial fibrillation/CHRONIC ATRIAL-FIBRILLATION/congestive heart
failure/development/digoxin/heart/heart
failure/hospitalization/incidence/LEFT-VENTRICULAR
DYSFUNCTION/morbidity/MORTALITY/MYOCARDIAL-INFARCTION/PH
YSICIAN/PHYSICIANS/population/PROGRESSION/RISK/risk
factors/sex/sinus rhythm/stroke/supraventricular arrhythmia/SYSTOLIC
DYSFUNCTION/THERAPY/treatment/TRIALS
Shinokawa, N., Hirai, T., Takashima, S., Kameyama, T., Nakagawa, K., Asanoi, H. and
Inoue, H. (2001), A transesophageal echocardiographic study on risk factors for
stroke in elderly patients with atrial fibrillation - A comparison with younger
patients. Chest, 120 (3), 840-846.
Abstract: Study objectives: Atrial fibrillation (AF) becomes an increasingly important
cause of stroke as patients get older. The aim of the study was to determine
whether risk factors of cerebral embolism among elderly patients with AF
differed from those of younger patients by using transesophageal
echocardiography (TEE). Design and setting: Cross-sectional study at a
university hospital. Methods: Cardiovascular lesions with the potential for
thromboembolism in patients with AF were investigated using TEE. Left atrial
spontaneous echocardiographic contrast (SEC), peak flow velocity in the left
atrial appendage (LAA-flow), and aortic atherosclerosis of the thoracic aorta
were assessed in 67 elderly (greater than or equal to 70 years old) and 135
younger (94% by ASA administration in all patients.
Importantly, platelet recruitment followed one of three distinct patterns. In group
A (n=32; 39%), platelet recruitment was blocked by ASA both in the presence
and absence of erythrocytes. In group B (n=37; 45%), recruitment was abolished
when platelets were evaluated alone but continued in the presence of
erythrocytes, indicating a suboptimal effect of ASA on erythrocytes of this
patient group. In group C (n=13; 16%), detectable recruitment in stimulated
platelets alone persisted and was markedly enhanced by the presence of
erythrocytes. Conclusions-In two thirds of a group of patients with vascular
disease, 200 to 300 mg ASA was insufficient to block platelet reactivity in the
presence of erythrocytes despite abolishing thromboxane A, synthesis. Platelet
activation in the presence of erythrocytes can induce the release reaction and
generate biologically active products that reemit additional platelets into a
developing thrombus. Insufficient blockade of this proaggregatory property oi
erythrocytes can lead to development of additional ischemic complications
Keywords: acetylsalicylic
acid/ACTIVATION/ADENOSINE-DIPHOSPHATE/administration/aspirin/bloo
d cells/cardiovascular diseases/cerebrovascular
disorders/CIRCULATION/COLLAGEN/complications/development/heart/ische
mic heart disease/ischemic
stroke/NEUTROPHILS/platelets/prevention/PROSTACYCLIN/RECRUITMEN
T/RED-BLOOD-CELLS/secondary prevention/stroke/THROMBOXANE
PRODUCTION/thrombus/treatment/vascular/vascular disease
Moinuddeen, K., Quin, J., Shaw, R., Dewar, M., Tellides, G., Kopf, G. and Elefteriades,
J. (1998), Anticoagulation is unnecessary after biological aortic valve
replacement. Circulation, 98 (19), II95-II98.
Abstract: Background-Opinion differs as to whether anticoagulation is beneficial in
preventing ischemic stroke in the early postoperative period after biological
aortic valve replacement (AVR), The purpose of this study was to determine
whether early anticoagulation with heparin and warfarin confers any significant
advantage for patients undergoing such replacement. Methods and
Results-Patients undergoing biological AVR between 1987 and 1996 were
divided retrospectively into 2 groups based on their postoperative anticoagulation.
Group A (109 patients) received heparin followed by warfarin for 3 months
(prothrombin time, 20 to 25 seconds). Group B (76 patients) received no
postoperative anticoagulation. Patients were followed for cerebral ischemic
events, bleeding, repeat operation, hospital stay, and survival. There were 5
(4.6%), 3 (2.8%), and 12 (11%) postoperative cerebral ischemic events for group
A at time points of 3 months, respectively;
for group B patients, 3 (3.9%), 2 (2.6%), and 9 (11.8%) events were seen during
the same respective time periods. There were no statistically significant
differences for ischemic events during any of these time periods for the 2 groups.
Bleeding complications occurred in 10 (9.2%) group A and 7 (9.2%) group B
patients. Mean hospital stay was 12 days for both groups. Repeat operative AVR
was required in 6 (5.5%) group A and 7 (9.2%) group B patients. A comparison
of Kaplan- Meier survival rates between groups A and B (mean follow-up,
47+/-26 and 59+/-30 months, for groups A and B, respectively) was not
statistically significant (P=0.60). Survival rates were 93%, 84%, and 62% at 1, 5,
and 7 years for group A and 87%, 74%, and 67% for group B, respectively.
Conclusions-Early anticoagulation after AVR confers no advantage in the
prevention of early cerebral ischemic events after biological AVR. No
disadvantage in terms of bleeding or prolonged hospital stay was incurred by
early anticoagulation, Long-term valve function and survival were not adversely
affected by withholding early anticoagulation. We conclude that early
anticoagulation after biological AVR is unnecessary
Keywords:
anticoagulants/anticoagulation/CIRCULATION/complications/CT/embolism/FO
LLOW-UP/heparin/ischemic stroke/PORCINE
BIOPROSTHESIS/prevention/prosthesis/prothrombin
time/RISK/stroke/valves/warfarin
Molloy, J., Martin, J.F., Baskerville, P.A., Fraser, S.C.A. and Markus, H.S. (1998),
S-nitrosoglutathione reduces the rate of embolization in humans. Circulation, 98
(14), 1372-1375.
Abstract: Background-Antiplatelet agents presently used in the secondary prevention of
cardiovascular disease fail to prevent the majority of cases of recurrent stroke
and systemic embolization. An evaluation of the efficacy of new agents is
hampered by a lack of in vivo models in humans. Asymptomatic cerebral
embolic signals (ES) may be detected with the use of transcranial Doppler
ultrasonography. These signals an particularly common after carotid
endarterectomy, and this provides a situation in which new antiplatelet agents
can be evaluated. With this model, we determined the effectiveness of
S-nitrosoglutathione (GSNO), a nitric oxide donor with relative platelet
specificity, in reducing cerebral embolization. Methods and Results-Transcranial
Doppler ultrasound recordings from the ipsilateral middle cerebral artery were
made after carotid endarterectomy in 12 control patients and 12 patients
receiving intravenous GSNO from the induction of anesthesia until 2 hours after
skin closure. Recording times were 0.5 to 3.5, 6 to 7, and 24 to 25 hours after
skin closure. The Doppler signal was recorded onto tape, and analysis for ES was
performed, with the investigators blinded to treatment group. All patients
received aspirin 300 mg/d before surgery and 5000 IU of heparin during surgery.
The median (range) number of ES detected during the initial 3-hour
postoperative recording was markedly reduced in the GSNO group compared
with the control group: 7.5 (0 to 61) versus 38.5 (1 to 219) (P=0.018). This
difference persisted until 6 hours after surgery. Conclusions- Despite the
administration of aspirin and heparin, frequent embolization occurred and was
markedly reduced after the administration of GSNO. This demonstrates the
potential use of platelet-specific nitric oxide donors in the treatment of
thromboembolic disease. This model of cerebral embolism may allow
determination of the effectiveness of new antiplatelet agents in humans
Keywords: ADHESION/ANGIOPLASTY/antiplatelet agents/aspirin/cardiovascular
disease/carotid/CAROTID ENDARTERECTOMY/cerebral
embolism/CIRCULATION/drugs/EMBOLIC
SIGNALS/embolism/endarterectomy/endothelium-derived
factors/evaluation/heparin/INHIBITION/INVITRO/MODEL/NITROSO-GLUT
ATHIONE/PLATELET ACTIVATION/platelet aggregation
inhibitors/prevention/secondary prevention/stroke/surgery/TRANSCRANIAL
DOPPLER ULTRASONOGRAPHY/treatment/ultrasonics
Berger, P.B., Bell, M.R., Hasdai, D., Grill, D.E., Melby, S. and Holmes, D.R. (1999),
Safety and efficacy of ticlopidine for only 2 weeks after successful intracoronary
stent placement. Circulation, 99 (2), 248-253.
Abstract: Background-In patients receiving intracoronary stents, stent thrombosis is
reduced when ticlopidine therapy is combined with aspirin after the procedure.
However, ticlopidine causes neutropenia in 1% of patients when administered for
>2 weeks, and little is known about the duration that ticlopidine needs be
administered to prevent stent thrombosis. Methods and Results-We analyzed 827
patients undergoing successful stent placement in 1061 coronary segments at
Mayo Clinic who were treated between May 1, 1996, and October 31, 1997.
Chronic warfarin therapy, cardiogenic shock, and enrollment in research
protocols requiring 4 weeks of ticlopidine were exclusion criteria; ticlopidine
was discontinued after 14 days in all remaining patients. The mean age of the
study population was 64 +/- 11 years; 49% had suffered a prior infarction, 20%
had undergone coronary artery bypass surgery, and 65% had multivessel disease.
The indication for stent placement was dissection or abrupt closure in 31% of
patients and suboptimal results from balloon angioplasty in 18%. Placement was
elective in 51% of patients, and 10.3% of patients were treated within 12 hours
of an acute myocardial infarction. Mean nominal stent size was 3.3 +/- 0.5 mm.
High-pressure inflations (greater than or equal to 12 atm) were performed in all
patients (mean, 17 +/- 4 atm). Intravascular ultrasound was used to facilitate stent
placement in 8.8% of patients. Abciximab was administered to 38% of patients;
11% of patients who were at increased risk of stent thrombosis were treated with
enoxaparin for 10 to 14 days. Adverse cardiovascular events in the 14 days after
stent placement occurred in II patients (1.3%). Two patients died of nonischemic
causes (sepsis and renal failure) in the 15th through 30th days after ticlopidine
was stopped. However, there were no cardiovascular deaths, myocardial
infarctions, coronary artery bypass operations, or repeat angioplasty procedures
between the 15th and 30th days; stent thrombosis did not occur in any patient
after ticropidine had been stopped. No patient developed neutropenia, although
1.8% of the first 489 patients who were closely monitored for side effects from
ticlopidine developed side effects requiring its discontinuation, and milder side
effects occurred in 4.7%. Conclusions-In patients receiving intracoronary stents,
the discontinuation of ticlopidine therapy 14 days after stent placement is
associated with a very low frequency of stent thrombosis and other adverse
events
Keywords: acute/acute myocardial infarction/adverse
events/age/angioplasty/ANGIOPLASTY/ANGIOSCOPY/ANTIPLATELET/aspi
rin/balloon angioplasty/bypass surgery/cardiovascular/cardiovascular
events/CIRCULATION/COMPLICATIONS/CORONARY/dissection/infarction/
low frequency/myocardial/myocardial infarction/neutropenia/platelet aggregation
inhibitors/population/PREVENTION/protocols/RANDOMIZED
TRIAL/renal/RESTENOSIS/risk/stents/STROKE/surgery/therapy/THROMBOS
IS/thrombosis/ticlopidine/ultrasound/warfarin
Dearani, J.A., Ugurlu, B.S., Danielson, G.K., Daly, R.C., McGregor, C.G.A., Mullany,
C.J., Puga, F.J., Orszulak, T.A., Anderson, B.J., Brown, R.D. and Schaff, H.V.
(1999), Surgical patent foramen ovale closure for prevention of paradoxical
embolism-related cerebrovascular ischemic events. Circulation, 100 (19),
171-175.
Abstract: Background-The role of surgical closure of patent foramen ovale (PFO) for
cerebral infarction (CI) or transient ischemic attack (TIA) resulting from
paradoxical embolism is unclear, and its effect on recurrence is unknown. Our
objective was to determine the outcome of surgical closure of PFO in patients
with a prior ischemic neurological event, define the rate of CI or TIA recurrence
after PFO closure, and identify risk factors for these recurrences. Methods and
Results-We retrospectively analyzed 91 patients (58 men, 33 women) with
greater than or equal to 1 previous cerebrovascular ischemic events who
underwent surgical PFO closure between April 1982 and March 1998. The
presence of a PFO with a right-to-left shunt was confirmed with transesophageal
echocardiography. Mean age was 44.2 +/- 12.2 years. The index event was a CI
in 59 and a TIA in 32; a Valsalva-like episode preceded the event in 15 patients.
Deep venous thrombosis was documented in 9 patients, and a hypercoagulable
state was identified in 10. Surgical closure was performed with extracorporeal
circulation by either direct suture (n=82) or patch closure (n=9), Limited
incisions were used in 18.7% of patients. There was no operative mortality.
Morbidity included transient atrial fibrillation (n=11), pericardial drainage for
effusion (n=4), exploration for bleeding (n=3), and superficial wound infection
(n=1). Follow-up totaled 176.3 patient-years, and mean follow-up was 2.0 years.
No one had a CI, and 8 had a TIA during follow-up, with I caused by temporal
arteritis, Transesophageal echocardiography demonstrated all closures to be
intact in these patients. The overall freedom from TIA recurrence during
follow-up was 92.5+/-3.2% at 1 year and 83.4+/-6.0% at 4 years. Having
multiple neurological events before PFO closure was the only significant risk
factor for TIA or CI recurrence after closure by univariate analysis (P=0.05); the
small number of post-PFO closure cerebral ischemic events precluded
multivariate analysis. Conclusions-Surgical closure of PFO can be performed
with minimal morbidity and mortality. PFO closure may decrease the risk of
recurrent stroke or TIA and may avoid lifelong anticoagulation in the young
adult if there is no other indication. Recurrent cerebrovascular ischemic events
after surgery should prompt further evaluation to identify causes other than
paradoxical embolism
Keywords: age/anticoagulation/atrial fibrillation/ATRIAL SEPTAL
ANEURYSM/cerebral/cerebral
infarction/cerebrovascular/CIRCULATION/CRYPTOGENIC
STROKE/echocardiography/embolism/evaluation/extracorporeal
circulation/fibrillation/foramen ovale/heart septal
defects/infarction/infection/ischemic/men/morbidity/mortality/paradoxical
embolism/patent/patent foramen ovale/prevention/recurrence/recurrent
stroke/risk/risk factor/risk factors/shunt/stroke/STROKE
RECURRENCE/surgery/thrombosis/TIA/transesophageal
echocardiography/transient/transient ischemic attack/venous thrombosis/women
Plehn, J.F., Davis, B.R., Sacks, F.M., Rouleau, J.L., Pfeffer, M.A., Bernstein, V., Cuddy,
T.E., Moye, L.A., Piller, L.B., Rutherford, J., Simpson, L.M. and Braunwald, E.
(1999), Reduction of stroke incidence after myocardial infarction with
pravastatin - The cholesterol and recurrent events (CARE) study. Circulation, 99
(2), 216-223.
Abstract: Background-The role of lipid modification in stroke prevention is
controversial, although increasing evidence suggests that HMG-CoA reductase
inhibition may reduce cerebrovascular events in patients with prevalent coronary
artery disease. Methods and Results-To test the hypothesis that cholesterol
reduction with pravastatin may reduce stroke incidence after myocardial
infarction, we followed 4159 subjects with average total and LDL serum
cholesterol levels (mean, 209 and 139 mg/dL, respectively) who had sustained an
infarction an average of 10 months before study entry and who were randomized
to pravastatin 40 mg/d or placebo in the Cholesterol and Recurrent Events
(CARE) trial. Using prospectively defined criteria, we assessed the incidence of
stroke, a prespecified secondary end point, and transient ischemic attack (TIA)
over a median 5-year follow-up period. Patients were well matched for stroke
risk factors and the use of antiplatelet agents (85% of subjects in each group).
Compared with placebo, pravastatin lowered total serum cholesterol by 20%,
LDL cholesterol by 32%, and triglycerides by 14% and raised HDL cholesterol
by 5% over the course of the trial. A total of 128 strokes (52 on pravastatin, 76
on placebo) and 216 strokes or TIAs (92 on pravastatin, 124 on placebo) were
observed, representing a 32% reduction (95% CI, 4% to 52%, P=0.03) in
all-cause stroke and 27% reduction in stroke or TIA (95% CI, 4% to 44%,
P=0.02). All categories of strokes were reduced, and treatment effect was similar
when adjusted for age, sex, history of hypertension, cigarette smoking, diabetes,
left ventricular ejection fraction, and baseline total, HDL, and LDL cholesterol
and triglyceride levels. There was no increase in hemorrhagic stroke in patients
on pravastatin compared with placebo (2 versus 6, respectively).
Conclusions-Pravastatin significantly reduced stroke and stroke or TIA incidence
after myocardial infarction in patients with average serum cholesterol levels
despite the high concurrent use of antiplatelet therapy
Keywords: age/antiplatelet/antiplatelet agents/antiplatelet
therapy/arteriosclerosis/CARDIOVASCULAR EVENTS/CARE/CAROTID
ATHEROSCLEROSIS/cerebrovascular/cholesterol/cigarette
smoking/CIRCULATION/coronary artery disease/diabetes/DISEASE/FACTOR
INTERVENTION TRIAL/HDL/HDL
cholesterol/history/hypertension/incidence/infarction/ischemic/LDL/LDL
cholesterol/LDL-cholesterol/LIPIDS/lipids/MEN/MORTALITY/myocardial/my
ocardial infarction/pravastatin/PREVENTION/randomized/risk/risk
factors/RISK-FACTORS/serum/SERUM-CHOLESTEROL/sex/smoking/stroke/
stroke incidence/stroke prevention/therapy/TIA/transient/transient ischemic
attack/treatment/triglycerides
de Lorgeril, M., Salen, P., Martin, J.L., Monjaud, I., Delaye, J. and Mamelle, N. (1999),
Mediterranean diet, traditional risk factors, and the rate of cardiovascular
complications after myocardial infarction - Final report of the Lyon Diet Heart
Study. Circulation, 99 (6), 779-785.
Abstract: Background-The Lyon Diet Heart Study is a randomized secondary prevention
trial aimed at testing whether a Mediterranean-type diet may reduce the rate of
recurrence after a first myocardial infarction. An intermediate analysis showed a
striking protective effect after 27 months of follow-up. This report presents
results of an extended follow-up (with a mean of 46 months per patient) and
deals with the relationships of dietary patterns and traditional risk factors with
recurrence. Methods and Results-Three composite outcomes (COs) combining
either cardiac death and nonfatal myocardial infarction (CO 1), or the preceding
plus major secondary end points (unstable angina, stroke, heart failure,
pulmonary or peripheral embolism) (CO 2), or the preceding plus minor events
requiring hospital admission (CO 3) were studied. In the Mediterranean diet
group, CO 1 was reduced (14 events versus 44 in the prudent Western- type diet
group, P=0.0001), as were CO 2 (27 events versus 90, P=0.0001) and CO 3 (95
events versus 180, P=0.0002). Adjusted risk ratios ranged from 0.28 to 0.53,
Among the traditional risk factors, total cholesterol (1 mmol/L being associated
with an increased risk of 18% to 28%), systolic blood pressure (1 mm Hg being
associated with an increased risk of 1% to 2%), leukocyte count (adjusted risk
ratios ranging from 1.64 to 2.86 with count >9x10(9)/L), female sex (adjusted
risk ratios, 0.27 to 0.46), and aspirin use (adjusted risk ratios, 0.59 to 0.82) were
each significantly and independently associated with recurrence.
Conclusions-The protective effect of the Mediterranean dietary pattern was
maintained up to 4 years after the first infarction, confirming previous
intermediate analyses. Major traditional risk factors, such as high blood
cholesterol and blood pressure, were shown to be independent and joint
predictors of recurrence, indicating that the Mediterranean dietary pattern did not
alter, at least qualitatively, the usual relationships between major risk factors and
recurrence. Thus, a comprehensive strategy to decrease cardiovascular morbidity
and mortality should include primarily a cardioprotective diet. It should be
associated with other (pharmacological?) means aimed at reducing modifiable
risk factors. Further trials combining the 2 approaches are warranted
Keywords: angina/aspirin/blood pressure/cardiovascular/cardiovascular
morbidity/CHOLESTEROL/CIRCULATION/complications/coronary
disease/diet/DISEASE/embolism/FISH/FOLLOW-UP/HEALTH/heart/heart
failure/hospital/infarction/INSIGHTS/morbidity/MORTALITY/myocardial/myo
cardial infarction/predictors/PREVENTION/randomized/recurrence/risk/risk
factors/secondary prevention/sex/stroke/systolic blood
pressure/TRIAL/trials/unstable angina/VENTRICULAR-FIBRILLATION
Agmon, Y., Khandheria, B.K., Meissner, I., Gentile, F., Whisnant, J.P., Sicks, J.D.,
O'Fallon, W.M., Covalt, J.L., Wiebers, D.O. and Seward, J.B. (1999), Frequency
of atrial septal aneurysms in patients with cerebral ischemic events. Circulation,
99 (15), 1942-1944.
Abstract: Background-Atrial septal aneurysm (ASA) is a putative risk factor for
cardioembolism. However, the frequency of ASA in the general population has
not been adequately determined. Therefore, the frequency in patients with
cerebral ischemic events, compared with the frequency in the general population,
is poorly defined. We sought to determine the frequency of ASA in the general
population and to compare the frequency of ASA in patients with cerebral
ischemic events with the frequency in the general population. Methods and
Results -The frequency of ASA in the population was determined in 363 subjects,
a sample of the participants in the stroke Prevention: Assessment of Risk in a
Community study (control subjects), and was compared with the frequency in
355 age- and sex-matched patients undergoing transesophageal
echocardiography in search of a cardiac source of embolism after a focal cerebral
ischemic event. The proportion with ASA was 7.9% in patients versus 2.2% in
control subjects (P=0.002; odds ratio of ASA, 3.65; 95% CI, 1.64 to 8.13, in
patients versus control subjects). Patent foramen ovale (PFO) was detected with
contrast injections in 56% of subjects with ASA. The presence of-ASA predicted
the presence of PFO (odds ratio of PFO, 4.57; 95% CI, 2.18 to 9.57, in subjects
with versus those without ASA). In 86% of subjects with ASA and cerebral
ischemia, transesophageal echocardiography did not detect an alternative source
of cardioembolism other than an associated PFO. Conclusions-The prevalence of
ASA based on this population-based study is 2.2%. The frequency of ASA is
relatively higher in patients evaluated with transesophageal echocardiography
after a cerebral ischemic event. ASA is frequently associated with PFO,
suggesting paradoxical embolism as a mechanism of cardioembolism. In patients
with cerebral ischemia and ASA, ASA (with or without PFO) commonly is the
only potential cardioembolic source detected with transesophageal
echocardiography
Keywords: ADULTS/age/aneurysm/cerebral/cerebral
ischemia/CIRCULATION/CLASSIFICATION/control/echocardiography/emboli
sm/focal/foramen ovale/ischemia/ischemic/MULTICENTER/paradoxical
embolism/POPULATION/population-based/PREVALENCE/RISK/risk
factor/STROKE/TRANSESOPHAGEAL ECHOCARDIOGRAPHY
Go, A.S., Hylek, E.M., Phillips, K.A., Borowsky, L.H., Henault, L.E., Chang, Y.C.,
Selby, J.V. and Singer, D.E. (2000), Implications of stroke risk criteria on the
anticoagulation decision in nonvalvular atrial fibrillation - The anticoagulation
and risk factors in atrial fibrillation (ATRIA) study. Circulation, 102 (1), 11-13.
Abstract: Background-Warfarin dramatically reduces the risk of stroke in patients with
nonvalvular atrial fibrillation (NVAF) but increases the likelihood of bleeding,
Accurately identifying patients who need anticoagulation is critical. We assessed
the potential impact of prominent stroke risk classification schemes on this
decision in a large sample of patients with NVAF. Methods and Results-We used
clinical and electrocardiographic databases to identify 13559 ambulatory patients
with NVAF from July 1996 through December 1997, We compared the
proportion of patients classified as having a low enough stroke risk to receive
aspirin using published criteria from the Atrial Fibrillation Investigators (AFI),
American College of Chest Physicians (ACCP), and the Stroke Prevention in
Atrial Fibrillation Investigators (SPAF), In this cohort, AFI criteria classified
11% as having a low stroke risk, compared with 23% for ACCP and 29% for
SPAF (kappa range, 0.44 to 0.85). This 2- to-3-fold increase in low stroke risk
patients by ACCP and SPAF criteria primarily resulted from the inclusion of
many older subjects (65 to 75 years +/- men >75 years) with no additional
clinical stroke risk factors. Conclusions-The age threshold for assigning an
increased stroke risk has a dramatic impact on whether to recommend warfarin in
populations of patients with NVAF, Large, prospective studies with many stroke
events are needed to precisely determine the relationship of age to stroke risk in
AF and to identify which AF subgroups are at a sufficiently low stroke risk to
forego anticoagulation
Keywords: AF/age/anticoagulants/anticoagulation/aspirin/atrial
fibrillation/bleeding/CIRCULATION/fibrillation/men/nonvalvular atrial
fibrillation/prospective studies/risk/risk factors/stroke/warfarin
Cooper, R., Cutler, J., Desvigne-Nickens, P., Fortmann, S.P., Friedman, L., Havlik, R.,
Hogelin, G., Marler, J., McGovern, P., Morosco, G., Mosca, L., Pearson, T.,
Stamler, J., Stryer, D. and Thom, T. (2000), Trends and disparities in coronary
heart disease, stroke, and other cardiovascular diseases in the United States -
Findings of the National Conference on Cardiovascular Disease Prevention.
Circulation, 102 (25), 3137-3147.
Abstract: A workshop was held September 27 through 29, 1999: to address issues
relating to national trends in mortality and morbidity from cardiovascular
diseases; the apparent slowing of declines in mortality from cardiovascular
diseases; levels and trends in risk factors for cardiovascular diseases; disparities
in cardiovascular diseases by race/ethnicity, socioeconomic status, and
geography; trends in cardiovascular disease preventive and treatment services;
and strategies for efforts to reduce cardiovascular diseases overall and to reduce
disparities among subpopulations. The conference concluded that coronary heart
disease mortality is still declining in the United States as a whole, although
perhaps at a slower rate than in the 1980s; that stroke mortality rates have
declined little, if at all, since 1990; and that there are striking differences in
cardiovascular death rates by race/ethnicity, socioeconomic status, and
geography. Trends in risk factors are consistent with a slowing of the decline in
mortality; there has been little recent progress in risk factors such as smoking,
physical inactivity, and hypertension control. There are increasing levels of
obesity and type 2 diabetes, with major differences among subpopulations. There
is considerable activity in population-wide prevention, primary prevention for
higher risk people, and secondary prevention, but wide disparities exist among
groups on the basis of socioeconomic status and geography, pointing to major
gaps in efforts to use available, proven approaches to control cardiovascular
diseases. Recommendations for strategies to attain the year 2010 health
objectives were made
Keywords: ACE-INHIBITORS/ACUTE
MYOCARDIAL-INFARCTION/ATRIAL-FIBRILLATION/cardiovascular/card
iovascular disease/cardiovascular diseases/CIRCULATION/control/coronary
heart disease/death/diabetes/DIABETES- MELLITUS/disease/disease
mortality/diseases/epidemiology/FAILURE/geography/HEALTH/heart/heart
disease/hypertension/morbidity/MORTALITY/obesity/PATTERNS/PHYSICIA
NS/PREVALENCE/prevention/primary/primary prevention/risk/risk
factors/secondary/secondary prevention/smoking/socioeconomic
status/status/stroke/stroke mortality/treatment/trends/type 2 diabetes/United
States/use
Muller, C., Buttner, H.J., Petersen, J. and Roskamm, H. (2000), A randomized
comparison of clopidogrel and aspirin versus ticlopidine and aspirin after the
placement of coronary-artery stents. Circulation , 101 (6), 590-593.
Abstract: Background-The introduction of an effective antiplatelet therapy with aspirin
and ticlopidine after the placement of coronary-artery stents has decreased the
risk of thrombotic stent occlusions (TSO) and hemorrhagic complications.
However, the use of ticlopidine is limited by hematological and gastrointestinal
adverse effects. The safety and efficacy of clopidogrel after stenting remains to
be established. Methods and Results-After successful coronary stenting during
elective or emergency percutaneous transluminal coronary angioplasty, 700
patients with 899 lesions were randomly assigned to receive a 4-week course of
either 500 mg ticlopidine (n=345) or 75 mg clopidogrel (n=355), in addition to
100 mg aspirin. All the following clinical events reflecting TSO were included in
the prespecified primary cardiac endpoint: cardiac death, urgent target vessel
revascularization, angiographically documented TSO, or nonfatal myocardial
infarction within 30 days. The primary noncardiac endpoint was defined as
noncardiac death, stroke, severe peripheral vascular or hemorrhagic events, or
any adverse event resulting in discontinuation of study medication. Cardiac
events occurred in 17 patients [11 (3.1%) with clopidogrel and 6 (1.7%) with
ticlopidine (P=0.24)]. The primary noncardiac endpoint was observed in 16
patients (4.5%) assigned to receive clopidogrel versus 33 patients (9.6%)
assigned to receive ticlopidine (P=0.01). Conclusions-After the placement of
coronary-artery stents in unselected patients, antiplatelet therapy with aspirin and
clopidogrel seems to be comparably safe and effective as aspirin and ticlopidine.
Noncardiac events were significantly reduced with clopidogrel
Keywords: adverse effects/angioplasty/ANTIPLATELET/antiplatelet
therapy/aspirin/cardiac/CIRCULATION/clopidogrel/complications/coronary
angioplasty/death/Germany/IMPLANTATION/infarction/myocardial/myocardial
infarction/prevention/primary/randomized/revascularization/risk/safety/stenting/s
tents/stroke/THERAPY/thrombosis/ticlopidine/use/vascular
Agmon, Y., Khandheria, B.K., Meissner, I., Schwartz, G.L., Petterson, T.M., O'Fallon,
W.M., Gentile, F., Whisnant, J.P., Wiebers, D.O. and Seward, J.B. (2000),
Independent association of high blood pressure and aortic atherosclerosis - A
population-based study. Circulation, 102 (17), 2087-2093.
Abstract: Background-Atherosclerosis of the thoracic aorta is associated with stroke.
The association between hypertension, a major risk factor for stroke, and aortic
atherosclerosis has not been determined in the general population. Methods and
Results- Transesophageal echocardiography was performed in 581 subjects, a
random sample of the Olmsted County (Minnesota) population aged greater than
or equal to 45 years participating in the Stroke Prevention: Assessment of Risk in
a Community (SPARC) study. Blood pressure was assessed by multiple office
measurements and 24-hour ambulatory blood pressure monitoring. The
association between blood pressure variables and aortic atherosclerosis was
evaluated by multiple logistic regression, adjusting for other associated variables.
Among subjects with atherosclerosis, blood pressure variables associated with
complex aortic atherosclerosis (protruding plaques greater than or equal to4 mm
thick, mobile debris, or ulceration) were determined. Age and smoking history
were independently associated with aortic atherosclerosis of any degree (P less
than or equal to0.001) and with complex atherosclerosis (P=0.002), whereas sex,
diabetes mellitus, and body mass index were not, Multiple systolic and pulse
pressure variables (office and ambulatory), but none of the diastolic blood
pressure variables, were associated with atherosclerosis and complex
atherosclerosis, adjusting for age and smoking. Among subjects with
atherosclerosis, the odds of complex atherosclerosis increased as ambulatory
out-of-bed systolic blood pressure increased (odds ratio 1.43 per 10 mm Hg
increase, 95% CI 1.10 to 1.87) and with hypertension treatment, adjusting for age
and smoking history. Conclusions-High blood pressure is independently
associated with aortic atherosclerosis. Among subjects with atherosclerosis, high
blood pressure is associated with complex atherosclerosis
Keywords: age/aged/aorta/atherosclerosis/blood pressure/body mass
index/CARDIOVASCULAR
RISK-FACTORS/CIRCULATION/diabetes/diabetes mellitus/diastolic blood
pressure/DISEASE/echocardiography/high blood
pressure/history/HYPERTENSION/hypertension/monitoring/PLAQUE/populati
on/population-based/PREVALENCE/risk/risk
factor/sex/smoking/STROKE/systolic blood pressure/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/treatment
Muhlestein, J.B., Anderson, J.L., Carlquist, J.F., Salunkhe, K., Horne, B.D., Pearson,
R.R., Bunch, T.J., Allen, A., Trehan, S. and Nielson, C. (2000), Randomized
secondary prevention trial of azithromycin in patients with coronary artery
disease - Primary clinical results of the ACADEMIC study. Circulation, 102 (15),
1755-1760.
Abstract: Background-Chlamydia pneumoniae is associated with coronary artery disease
(CAD), although its causal role is uncertain. A small preliminary study reported
a >50% reduction in ischemic events by azithromycin, an antibiotic effective
against C pneumoniae, in seropositive CAD patients. We tested this
prospectively in a larger, randomized, double-blind study. Methods and
Results-CAD patients (n=302) seropositive to C pneumoniae (IgG titers greater
than or equal to 1:16) were randomized to placebo or azithromycin 500 mg/d for
3 days and then 500 mg/wk for 3 months. The primary clinical end point
included cardiovascular death, resuscitated cardiac arrest, nonfatal myocardial
infarction (MI), stroke, unstable angina, and unplanned coronary
revascularization at 2 years. Treatment groups were balanced, and azithromycin
was generally well tolerated. During the trial, 47 first primary events occurred
(cardiovascular death, 9; resuscitated cardiac arrest, 1; MI, 11; stroke, 3; unstable
angina, 4; and unplanned coronary revascularization, 19), with 22 events in the
azithromycin group and 25 in the placebo group. There was no significant
difference in the 1 primary end point between the 2 groups (hazard ratio for
azithromycin, 0.89; 95% CI, 0.51 to 1.61; P=0.74). Events included 9 versus 7
occurring within 6 months and 13 versus 18 between 6 and 24 months in the
azithromycin and placebo groups, respectively. Conclusions-This study suggests
that antibiotic therapy with azithromycin is not associated with marked early
reductions (greater than or equal to 50%) in ischemic events as suggested by an
initial published report. However, a clinically worthwhile benefit (ie, 20% to
30%) is still possible, although it may be delayed. Larger (several thousand
patient), longer-term (greater than or equal to 3 to 5 years) antibiotic studies are
therefore indicated
Keywords: angina/antibiotics/ATHEROSCLEROSIS/cardiovascular/Chlamydia
pneumoniae/CHLAMYDIA-PNEUMONIAE
INFECTION/CIRCULATION/coronary artery disease/coronary
disease/coronary
revascularization/delayed/HEART-DISEASE/infarction/ischemic/myocardial/my
ocardial
infarction/MYOCARDIAL-INFARCTION/prevention/primary/PROTEIN/RAB
BIT MODEL/randomized/revascularization/ROXITHROMYCIN/secondary
prevention/SEROLOGICAL EVIDENCE/SMOOTH-MUSCLE
CELLS/STRAIN TWAR/stroke/therapy/unstable angina
Eto, Y., Yonekura, K., Sonoda, M., Arai, N., Sata, M., Sugiura, S., Takenaka, K.,
Gualberto, A., Hixon, M.L., Wagner, M.W. and Aoyagi, T. (2000), Calcineurin
is activated in rat hearts with physiological left ventricular hypertrophy induced
by voluntary exercise training. Circulation , 101 (18), 2134-2137.
Abstract: Background-Calcineurin may play a pivotal role in the signaling of cardiac
hypertrophy; since this hypothesis was first put forward, controversial reports
have been published using various experimental models. This study was
designed to compare the physiological left ventricular hyper-trophy (LVH)
induced by voluntary exercise with LVH induced by aortic constriction and to
determine whether calcineurin participates in the signaling of exercise-induced
LVH. Methods and Results-Wistar rats were assigned to 1 of the following 5
groups: 10 weeks of voluntary exercise (EX), a sedentary regimen, a 1-week
(AC1) or l-week (AC4) ascending aortic constriction period, or a sham operation,
EX rats ran 2.4+/-0.7 km/day voluntarily in specially manufactured cages; this
was associated with an increase of LV diastolic dimension and stroke volume.
Myocardial calcineurin activity markedly increased in EX rats (46.4+/-8.3 versus
18.4+/-0.5 pmol.min(-1).mg(-1) in sedentary rats; P155 ms (odds ratio, 5.37; 95% CI,
3.10 to 9.30; P155 ms predicted AF with positive and negative predictive accuracy of 49%
and 84%, respectively. Conclusions-A combination of prolonged
SAPD,;advanced age, and male sex identifies patients at high risk for
development of AF after CABG
Keywords: AF/age/aging/arrhythmia/ARRHYTHMIAS/bypass
surgery/CABG/CIRCULATION/combination/CONDUCTION/development/EF
FICACY/fibrillation/FLUTTER/high risk/men/OPERATIONS/P-WAVE
DURATION/PREDICTOR/PREVENTION/prospective study/risk/risk
stratification/sex/STROKE/SUPRAVENTRICULAR
TACHYARRHYTHMIAS/surgery/therapy
Maron, B.J., Olivotto, I., Spirito, P., Casey, S.A., Bellone, P., Gohman, T.E., Graham,
K.J., Burton, D.A. and Cecchi, F. (2000), Epidemiology of hypertrophic
cardiomyopathy-related death - Revisited in a large non-referral-based patient
population. Circulation, 102 (8), 858-864.
Abstract: Background-Death resulting from hypertrophic cardiomyopathy (HCM),
particularly when sudden, has been reported to be largely confined to young
persons. These data emanated from tertiary HCM centers with highly selected
referral patterns skewed toward high risk patients. Methods and Results-The
present analysis was undertaken in an international population of 744
consecutively enrolled and largely unselected patients more representative of the
overall HCM spectrum. HCM-related death occurred in 86 patients (12%) over
8+/-7 years (mean+/- SD). Three distinctive modes of death were as follows: (1)
sudden and unexpected (51%; age, 45+/-20 years); (2) progressive heart failure
(36%; age, 56+/-19 years); and (3) HCM-related stroke associated with atrial
fibrillation (13%; age, 73+/-14 years). Sudden death was most common in young
patients, whereas heart failure- and stroke-related deaths occurred more
frequently in midlife and beyond. However, neither sudden nor heart
failure-related death showed a statistically significant, disproportionate age
distribution (P=0.06 and 0.5, respectively). Stroke related deaths did occur
disproportionately in older patients (P=0.002). Of the 45 patients who died
suddenly, most (71%) had no or mild symptoms, and 7 (16%) participated in
moderate to severe physical activities at the time of death.
Conclusions-HCM-related cardiovascular death occurred suddenly, or as a result
of heart failure or stroke, largely during different phases of life in a prospectively
assembled, regionally based, and predominantly unselected patient cohort.
Although most sudden deaths occurred in adolescents and young adults, such
catastrophes were not confined to patients of these ages and extended to later
phases of life. This revised clinical profile suggests that generally held
epidemiological tenants for HCM have been influenced considerably by skewed
reporting from highly selected populations. These data are likely to importantly
affect risk stratification and treatment strategies importantly for the prevention of
sudden death in HCM
Keywords: adolescents/adults/age/atrial
fibrillation/cardiomyopathy/cardiovascular/CIRCULATION/CLINICAL
COURSE/death/ECHOCARDIOGRAPHY/fibrillation/heart/heart failure/high
risk/HIGH-RISK/IMPROVED SURVIVAL/LEFT-VENTRICULAR
HYPERTROPHY/NATURAL- HISTORY/OBSTRUCTIVE
CARDIOMYOPATHY/population/prevention/PROGNOSIS/risk/risk
stratification/stroke/sudden/SUDDEN CARDIAC
DEATH/treatment/YOUNG/young adults
Fan, K., Lee, K.L., Chiu, C.S.W., Lee, J.W.T., He, G.W., Cheung, D., Sun, M.P. and
Lau, C.P. (2000), Effects of biatrial pacing in prevention of postoperative atrial
fibrillation after coronary artery bypass surgery. Circulation, 102 (7), 755-760.
Abstract: Background-Atrial fibrillation (AF) is common after coronary artery bypass
surgery (CABC) and results in prolonged hospitalization. The purpose of this
study was to evaluate the efficacy of biatrial pacing in preventing post-CABG
AF compared with single-site atrial pacing. Methods and Results-A total of 132
patients who had no history of AF and who underwent CABG were randomized
to 1 of the following 4 groups: biatrial pacing (BiA), left atrial pacing (LA), right
atrial pacing (RA), or no pacing (control) in postoperative period. Overdrive
atrial pacing was performed for 5 days. The incidence of AF was significantly
reduced in the BiA group (12.5%) compared with the other 3 groups (LA, 36.4%;
RA, 33.3%; control, 41.9%; P 200 mg/dL and 0.87 (95% CI 0.78 to 0.97) associated with a 5%
decrease in %HDL. The increased risk associated with high triglycerides was
found across subgroups of age, sex, patient characteristics, and cholesterol
fractions. Conclusions-High triglycerides constitute an independent risk factor
for ischemic stroke/TIA across subgroups, of age, sex, patient characteristics,
and cholesterol fractions. whereas high %HDL was an independent protective
factor among patients with CHD. These findings support the role of blood lipids,
including triglycerides, as important modifiable stroke risk factors
Keywords: age/brain/cerebrovascular/cerebrovascular disease/cerebrovascular
disorders/CEREBROVASCULAR-DISEASE/cholesterol/CIRCULATION/coro
nary heart disease/CORONARY
HEART-DISEASE/CT/DENSITY-LIPOPROTEIN
CHOLESTEROL/disease/FOLLOW-UP/HDL/HDL cholesterol/heart/heart
disease/history/ischemic/ischemic
stroke/Israel/lipids/lipoproteins/MEN/MORTALITY/MYOCARDIAL-INFARC
TION/PRAVASTATIN/risk/risk factor/risk factors/SECONDARY
PREVENTION/sex/STROKE/TIA/transient/transient ischemic
attack/triglycerides
Mathew, J., Sleight, P., Lonn, E., Johnstone, D., Pogue, J., Yi, Q.L., Bosch, J., Sussex,
B., Probstfield, J. and Yusuf, S. (2001), Reduction of cardiovascular risk by
regression of electrocardiographic markers of left ventricular hypertrophy by the
angiotensin-converting enzyme inhibitor ramipril. Circulation, 104 (14),
1615-1621.
Abstract: Background-Electrocardiographic markers of left ventricular hypertrophy
(LVH) predict poor prognosis. We determined whether the ACE inhibitor
ramipril prevents the development and causes regression of ECG-LVH and
whether these changes are associated with improved prognosis independent of
blood pressure reduction. Methods and Results-In the Heart Outcomes
Prevention Evaluation (HOPE) study, patients at high risk were randomly
assigned to ramipril or placebo and followed for 4.5years. ECGs were recorded
at baseline and at study end. We compared prevention/regression and
development/persistence of ECG-LVH in the two groups and related these
changes to outcomes. At baseline, 676 patients had LVH (321 in the ramipril
group and 355 in the placebo group) and 7605 patients did not have LVH (3814
in the ramipril group and 3791 in the placebo group). By study end, 336 patients
in the ramipril group (8.1%) compared with 406 in the placebo group (9.8%) had
development/persistence of LVH; in contrast, 3799 patients in the ramipril group
(91.9%) compared with 3740 in the placebo group (90.2%) had
regression/prevention of LVH (P=0.007). The effect of ramipril on LVH was
independent of blood pressure changes. Patients who had regression/prevention
of LVH had a lower risk of the predefined primary outcome (cardiovascular
death, myocardial infarction, or stroke) compared with those who had
development/persistence of LVH (12.3% versus 15.8%, P=0.006) and of
congestive heart failure (9.3% versus 15.4%, P 220 bpm for 10 consecutive beats. Analysis was confined to patients with at
least 1 AHRE duration exceeding 5 minutes. The 312 patients were median age
74 years, 55% female, and 60% had a history of SVT. 160 of 312 (51.3%)
patients enrolled had at least 1 AHRE >5 minutes duration over median
follow-up of 27 months. Cox proportional hazards analysis assessed the
relationship of AHREs with clinical events, adjusting for prognostic variables
and baseline covariates. The presence of any AHRE was an independent
predictor of the following: total mortality (hazard ratio AHRE versus no AHRE
and 95% confidence intervals=2.48 [1.25, 4.91], P=0.0092); death or nonfatal
stroke (2.79 [1.51, 5.15], P=0.0011); and atrial fibrillation (5.93 [2.88, 12.2],
P=0.0001). There was no significant effect of pacing mode on the presence or
absence of AHREs. Conclusions-AHRE detected by pacemakers in patients with
SND identify patients that are more than twice as likely to die or have a stroke,
and 6 times as likely to develop atrial fibrillation as similar patients without
AHRE
Keywords: age/arrhythmia detection/ARRHYTHMIAS/asymptomatic/atrial/atrial
fibrillation/CIRCULATION/clinical
trials/death/DESIGN/diagnostics/FIBRILLATION/fibrillation/history/IMPLAN
TATION/MANAGEMENT/mortality/outcomes/pacemaker/pacemaker
diagnostics/pacemakers/pacing/pacing
mode/PREVENTION/randomized/randomized trial/RISK/SINUS-NODE
DYSFUNCTION/stroke/trial/USA
Sasaki, S., Nakagawa, M., Nakata, T., Azuma, A., Sawada, S., Takeda, K. and Asayama,
J. (2002), Effects of pravastatin on exercise electrocardiography test performance
and cardiovascular mortality and morbidity in patients with hypercholesterolemia
- Lipid intervention study in Kyoto. Circulation Journal, 66 (1), 47-52.
Abstract: The long-term effects of the 3-hydoxy-3-methyl-glutaryl coenzyme A
reductase inhibitor, pravastatin, on exercise electrocardiography (ECG) test
performance and cardiovascular mortality and morbidity were compared with
those of conventional lipid-lowering drugs in hypercholesterolemic patients with
no history of myocardial infarction or stroke. One thousand two hundred and
seventeen patients were randomly assigned with mean serum cholesterol,
triglyceride, high- density lipoprotein (HDL) cholesterol, and low-density
lipoprotein (LDL) cholesterol levels of 6.98+/-0.91 mmol/L, 2.08+/-1.87 mmol/L,
1.38+/-0.44 mmol/L, and 5.07+/-1.14 mmol/L, respectively, and received either
pravastatin at a dose of 10- 20 mg/day (group P) or one of the conventional
lipid-lowering drugs such as fibrates, nicotinic acid, and probucol (group Q. The
numbers of patients available for analysis in groups P and C were 305 and 278 at
year 1, 261 and 216 at year 2, 206 and 184 at year 3, 159 and 122 at year 4, and
103 and 81 at year 5. Over the 3.2 year mean follow-up period, the reduction in
serum LDL cholesterol levels was significantly greater (p 130 ms in both leads II and Vi
and the other 14 patients (IIIa). The duration of the intrinsic P wave in leads II
and Vi was significantly greater in group III than in group I + II (119 20 vs 108
21 ms, p = 0.0417, 106 16 vs 95 21 ms, p = 0.0258, respectively). During the
follow-up of 40 21 months, AF recurrence was significantly higher in group IIIb
than in groups IIIa and I + II (17/20 vs 5/14 vs 2/23 p 1,500 x
10(9)/L, history of major thrombosis (myocardial infarction, stroke, peripheral
occlusive vascular disease), or presence of vascular disease (e.g., arteriosclerosis);
(b) history or presence of spontaneous or major bleedings, bleedings elicited by
low-dose aspirin for the secondary prevention of vascular complications in
essential thrombocythemia at platelet counts 65
years is recommended
Keywords: age/aged/arteriosclerosis/aspirin/aspirin
treatment/asymptomatic/complications/COUNT/ERYTHROMELALGIA/history
/HYDROXYUREA/infarction/ischemic/life
expectancy/MANIFESTATIONS/MYELOPROLIFERATIVE
DISORDERS/myocardial/myocardial
infarction/Netherlands/PLASMA/platelets/POLYCYTHEMIA-VERA/preventio
n/prophylaxis/randomized/RISK/risk factor/risk factors/secondary
prevention/stroke/therapy/thrombosis/THROMBOTIC
COMPLICATIONS/transient/transient ischemic
attacks/treatment/vascular/vascular disease
Syrbe, G., Redlich, H., Weidlich, B., Ludwig, J., Kopitzsch, S., Gockeritz, A. and
Herzog, K. (2001), Individual dosing of ASA prophylaxis by controlling platelet
aggregation. Clinical and Applied Thrombosis-Hemostasis, 7 (3), 209-213.
Abstract: Acetylsalicylic acid is widely used in the primary and secondary prevention of
cardiovascular diseases. In the current study, we used platelet aggregation ex
vivo in platelet-rich plasma induced with arachidonic acid as a routine method
for the determination of the individual dose of acetylsalicylic acid necessary to
inhibit platelet aggregation in 108 patients with cardiovascular diseases. In 40%
of all patients studied, a dose of 30 mg/day was sufficient to block the
arachidonic acid- induced platelet aggregation nearly completely. In 50% of all
patients, a dose of 100 mg/day was necessary. In 10% of all patients, the dose
had to be further increased to 300 mg/day or even to 500 mg/day to inhibit
platelet aggregation nearly completely. These results demonstrate that platelet
aggregation can be used as a simple routine laboratory method to control
acetylsalicylic acid treatment in patients with cardiovascular diseases and to
determine individual doses of acetylsalicylic acid for a nearly complete
inhibition of platelet aggregation. With a standard dose of 100 mg/day, 10% of
the patients were nonresponders
Keywords: ACETYLATION/acetylsalicyclic acid/acetylsalicylic acid/ACUTE
MYOCARDIAL-INFARCTION/aggregation/AMERICAN-HEART-ASSOCIA
TION/ASPIRIN/cardiovascular/cardiovascular diseases/control/diabetes
mellitus/diseases/Germany/HEALTH-CARE
PROFESSIONALS/INHIBITION/MECHANISM/platelet/platelet
aggregation/prevention/primary/primary and secondary
prevention/prophylaxis/secondary/secondary
prevention/slope/STATEMENT/STROKE COUNCIL/treatment/TRIAL
Ertorer, M.E., Gokcel, A., Savas, L. and Kocak, R. (2002), Ticlopidine-induced marrow
aplasia treated with cyclosporine. Clinical and Applied Thrombosis-Hemostasis,
8 (2), 183-185.
Abstract: A 50-year-old diabetic and hypertensive male patient is reported who had
ticlopidine-induced marrow aplasia partially responsive to colony-stimulating
factors and corticosteroids, but experienced complete recovery with cyclosporine.
There is no consensus on the treatment of ticlopidine-induced marrow aplasia.
Although many cases are reported to recover with colony-stimulating factors and
corticosteroids, others are unresponsive or partially responsive. Our patient also
did not completely respond to these medications, but was successfully treated
with cyclosporine alone. Alone or in combination with corticosteroids,
cyclosporine is an effective drug of choice for the resistant patients
Keywords:
AGRANULOCYTOSIS/ANEMIA/combination/consensus/cyclosporine/drug/H
EAD/marrow aplasia/PREVENTION/STROKE/ticlopidine/treatment/TRIAL
Kawashima, K., Watanabe, T.X., Sokabe, H. and Saito, K. (1987), Prevention of Renal
Damage and Decrease of Urinary Kinins Excretion by Chronic Treatments with
Enalapril and Captopril in Stroke-Prone Spontaneously Hypertensive Rats.
Clinical and Experimental Hypertension Part A-Theory and Practice, 9 (2-3),
409-413
Yamori, Y. (1991), Studies on Spontaneous Hypertension - Development from Animal-
Models Toward Man - Overview. Clinical and Experimental Hypertension Part
A-Theory and Practice, 13 (5), 631-644.
Abstract: The development of genetic rat models for research on hypertension, stroke
and other cardiovascular diseases (CVD) such as spontaneously hypertensive rats
(SHR) and stroke-prone SHR (SHRSP) have contributed not only to the
elucidation of the pathogenesis of hypertension-related CVD but also to their
prediction and prevention. Since both generic and environmental factors are
involved in the pathogenesis of CVD as extensively studied so far on these
models, the detection of the early pathogenic mechanisms related to the genetic
factors and the control of environmental factors such as dietary improvement are
useful as predictive and preventive measures against CVD. Sympathetic
overresponsiveness, early development of cardiovascular hypertrophy, increased
salt sensitivity and membrane or transport abnormalities in vascular smooth
muscle cells (VSMC) from SHR and SHRSP, possibly related to the
pathogenesis of hypertension, are so far regarded as predictors for hypertension
partly applicable to human hypertension. Genetic pathogenic mechanisms of
stroke in SHRSP which have been proven to be greatly influenced also by dietary
factors are hypertension-induced VSMC degeneration and necrosis of
intracerebral arteries due to local nutritional disturbance. One of predictors of
stroke related to the pathogenic mechanisms is reduction of regional cerebral
blood flow. On the other hand, the control of environmental factors, especially
nutrition and diets such as intakes of animal and vegetable proteins, some amino
acids and fatty acids, potassium, calcium, magnesium, dietary fibers, etc., have
been experimentally demonstrated to be effective for the prevention of CVD in
these genetic models, and the applicability of these experimental findings to the
CVD prevention in man is now supported from our world-wide epidemiological
studies (WHO CARDIAC Study)
Keywords: CARDIOVASCULAR-DISEASES/CEREBRAL BLOOD
FLOW/HYPERTENSION/MECHANISMS/NUTRITION/POTASSIUM/PROT
EIN/RATS/SALT/SHR/SHRSP/SPONTANEOUSLY HYPERTENSIVE RATS
(SHR)/STROKE/STROKE-PRONE/STROKE-PRONE SHR
(SHRSP)/VASCULAR SMOOTH MUSCLE CELLS
Miyagishi, A., Maniwa, T., Noguchi, T. and Hara, Y. (1991), Prevention of Cerebral
Stroke by Arotinolol in Salt-Loaded Shrsp. Clinical and Experimental
Hypertension Part A-Theory and Practice, 13 (5), 1077-1089.
Abstract: The preventive effects of long-term treatment with arotinolol on the
development of cerebral stroke were examined in SHRSP fed a high salt diet.
Arotinolol (4.87 mg/kg per day for 20 weeks) prevented cerebral lesions, reduced
signs of stroke and delayed early mortality but did not alter blood pressure from
control SHRSP, when the administration of the drug was started before the onset
of hypertension. At dosage levels similar to arotinolol, both pindolol and
labetalol were less effective in preventing cerebral lesions despite lower blood
pressure. Propranolol produced no detectable effect on blood pressure or
frequency of cerebral lesions. Furthermore, arotinolol (4.27 mg/kg per day)
markedly inhibited the development of stroke without blood pressure reduction,
when the administration was started after the onset of severe hypertension. These
results suggest that arotinolol is more effective in preventing cerebral stroke than
pindolol, labetalol and propranolol, and that factors other than blood pressure
reduction may be involved in this preventive effect
Keywords: A-ADRENOCEPTOR AND B-ADRENOCEPTOR BLOCKING
DRUG/ADRENOCEPTOR BLOCKING-AGENT/AROTINOLOL/CEREBRAL
STROKE/S-596/SALT LOADING DIET/SHRSP/SPONTANEOUSLY
HYPERTENSIVE RATS
Isles, C.G. and Hole, D.J. (1992), Is There A-J-Curve Distribution for Diastolic
Blood-Pressure. Clinical and Experimental Hypertension Part A-Theory and
Practice, 14 (1-2), 139-149.
Abstract: The question whether there is a level of diastolic pressure during treatment
below which further reduction of pressure may be harmful rather than beneficial
is of great interest. If, as the proponents of this hypothesis maintain, death from
CHD among treated hypertensives becomes more rather than less common at
very low diastolic pressure, this might explain at least in part why most primary
prevention trials of hypertension have failed to show a reduction in CHD
mortality. However, as the sceptics have pointed out, the evidence that drug
induced lowering of blood pressure is harmful is not of the highest quality, and
alternative explanations for excess cardiovascular mortality at low diastolic
pressure exist. In the following review of this hotly contested debate it is
concluded that both proponents and sceptics may be correct, but that the presence
of a J curve should not divert attention from the main benefit of treating
hypertension which is a reduction in the risk of fatal and non fatal stroke
Keywords: DEATH/DIASTOLIC BLOOD PRESSURE/ELDERLY
PATIENTS/HYPERTENSION/J-CURVE/MORTALITY/MYOCARDIAL-INF
ARCTION/REDUCTION/TRIAL
Liu, L.S. (1993), Hypertension Studies in China. Clinical and Experimental
Hypertension, 15 (6), 1015-1024.
Abstract: In China, hypertension (HT) prevalence increased from 7.7% in 1980 to over
11% in 1991. The higher prevalence of HT in the north and among urban
populations may be due in part to higher body mass index (BMI) levels and
dietary composition. Community control of HT has been organized since 1969.
Reports from centers with a history of community control for over 10 years have
indicated a 40% and 34% decrease respectively in the incidence of stroke and
acute myocardial infarction (AMI). Sino-Monica Beijing Project shows that
morbidity and mortality of stroke and coronary heart disease are higher in north
China and urban centers, stroke is 4-8 times higher than coronary events. The
trend from 1985-1989 was relatively steady. Although the mortality of stroke and
AMI was decreasing, the case fatality rate remained high, and the rapid increase
in the proportion of older population points to an urgent need for a nationwide
prevention and control program
Keywords: CARDIOVASCULAR EPIDEMIOLOGY/COMMUNITY
CONTROL/HYPERTENSION
Sleight, P. (1993), Smoking and Hypertension. Clinical and Experimental Hypertension,
15 (6), 1181-1192.
Abstract: Coronary heart disease is the most common cause of death in hypertensives -
about twice as common as stroke. Smoking increases this raised risk of
hypertension by some 2 to 3 times. Surprisingly perhaps, this increased risk from
smoking declines rapidly on quitting - within 2-3 years. Smoking increases the
risks of vascular damage by increasing sympathetic tone, platelet stickiness and
reactivity, free radical production, damage to endotherlium, and by surges in
arterial pressure. The latter may interfere with the action of some hypotensive
agents. Persuading hypertensive patients not to smoke is the single most effective
measure we can take to reduce their risk
Keywords: BLOOD-PRESSURE/CARDIOVASCULAR
RISK-FACTORS/CIGARETTE- SMOKING/CORONARY
HEART-DISEASE/FIBRINOGEN/HYPERTENSION/MEN/MORTALITY/PO
PULATION/PRIMARY PREVENTION/SMOKERS
Okada, M., Kobayashi, M., Maruyama, H., Takahashi, R., Ikemoto, F., Yano, M. and
Nishikibe, M. (1995), Effects of A Selective Endothelin A-Receptor Antagonist,
Bq- 123, in Salt-Loaded Stroke-Prone Spontaneously Hypertensive Rats.
Clinical and Experimental Pharmacology and Physiology, 22 (10), 763-768.
Abstract: 1. We examined the effects of a selective endothelin A (ET(A))- receptor
antagonist, BQ-123, on the development of hypertension and organ damage in
stroke-prone spontaneously hypertensive rats (SHRSP) given 1% NaCl for 6
weeks. 2. BQ-123 at doses of 0.7, 2.1 and 7.1 mg/day was continuously
administered for 6 weeks to 8 week old salt-loaded SHRSP, who were given
water containing 1% NaCl for the following 6 weeks, via a subcutaneous osmotic
minipump. 3. Development of high blood pressure was accelerated in salt-loaded
SHRSP compared with that in non-salt-loaded SHRSP. After 6 weeks of
salt-loading, incidence of cerebral infarction, renal sclerosis and renal fibrosis
were greater in salt-loaded than non-salt-loaded SHRSP. 4. BQ-123 attenuated
the age-related rise in blood pressure in a dose-dependent manner. The effect
coincided with reduction in the incidence of cerebral infarction and prevention of
renal sclerosis and fibrosis. Kidney function was improved as observed by an
increase in glomerular filtration rate and decreases in urinary protein excretion,
blood urea nitrogen and fractional sodium excretion. Furthermore, BQ-123
prevented increases in the heart weight/bodyweight ratio and aortic wall
thickness in salt-loaded SHRSP. 5. These results suggest that endogenous
endothelin-1 (ET-1) and ET(A)-receptors maybe, at least in part, involved in the
pathogenesis of hypertension and organ damage in salt-loaded SHRSP
Keywords: blood
pressure/BQ-123/C-FOS/development/DNA-SYNTHESIS/ET(A)-RECEPTOR
ANTAGONIST/EXPRESSION/FIBROBLASTS/heart/high blood
pressure/HYPERTENSION/HYPERTROPHY/incidence/KIDNEY/MITOGENE
SIS/ORGAN DAMAGE/POTENT/prevention/rats/RENIN/SALT-LOADED
SHRSP/SHRSP/SMOOTH-MUSCLE CELLS
Langer, R.D. (1995), The Epidemiology of Hypertension Control in Populations.
Clinical and Experimental Hypertension, 17 (7), 1127-1144.
Abstract: Despite an aging population, prevalence rates for hypertension in the U.S.
remain stable due to a decrease in rates in women but a corresponding increase in
rates for men. Epidemiological factors which may contribute to these rates are
discussed. The lack of a threshold for the association between blood pressure and
disease events means that the majority of events occur in the larger number of
people with mild disease. Because the efficacy and cost-effectiveness of medical
therapy to lower mildly elevated blood pressure remains controversial,
population-based strategies to effect behavior change are the most prudent course
for this, the largest group at risk. Targeted, resource-intensive medical
intervention for those at high risk combined with hygienic measures for the
population with mildly elevated blood pressure form the basis for an effective
public health strategy
Keywords: ALCOHOL-CONSUMPTION/behavior/blood pressure/CORONARY
HEART-DISEASE/cost
effectiveness/cost-effectiveness/DECLINE/EPIDEMIOLOGY/FAMILY/FOLL
OW-UP/health/HIGH BLOOD-PRESSURE/HIGH RISK
STRATEGY/HYPERTENSION/ISOLATED SYSTOLIC
HYPERTENSION/MILD HYPERTENSION/PARADOXICAL
SURVIVAL/PRIMARY PREVENTION/risk/RISK FACTORS/STROKE
MORTALITY/UNITED-STATES/women
Vaux, D.L. and Hacker, G. (1995), Hypothesis - Apoptosis Caused by Cytotoxins
Represents A Defensive Response That Evolved to Combat Intracellular
Pathogens. Clinical and Experimental Pharmacology and Physiology, 22 (11),
861-863.
Abstract: 1. Over 100 different agents have been shown, under certain circumstances, to
cause apoptosis, a form of cell death with characteristic morphology, In most
cases, the mechanism of cell death is likely to be the same, as expression of the
cell death inhibitory gene bcl-2 can frequently prevent apoptotic changes and/or
delay cell death. 2. These observations raise the question of how and why cells
detect these agents and why they respond by implementing the suicide
mechanism that bcl-2 can control, Our hypothesis is that apoptosis is used as an
anti- viral strategy, and that cells interpret any metabolic disturbance as evidence
of infection by a virus and thereby kill themselves in response to these toxins
before they are killed by the action of the toxin itself. 3. Experiments on the
effect of sodium azide upon growth factor-dependent cells support this idea.
Bcl-2 can delay cell death caused by azide, and inhibit apoptotic changes seen by
electron microscopy, but cannot prevent the eventual death of the cells. 4. These
ideas suggest that drugs designed to regulate cell death may be useful for the
treatment of ischaemic or neoplastic diseases, For example, human cells may
activate a suicide pathway in response to sub-lethal amounts of anoxia following
a stroke or heart attack and so blocking apoptosis may be a useful therapy to
limit tissue damage, On the other hand, increasing the propensity of cells to
activate their physiological cell death mechanisms may enhance the effectiveness
of toxins designed to kill tumour cells
Keywords: anoxia/APOPTOSIS/BACULOVIRUS
GENE/BCL-2/C-ELEGANS/CED-3/CELL
DEATH/diseases/ENZYME/heart/INSECT
CELLS/MECHANISMS/PREVENTION/PROGRAMMED
CELL-DEATH/stroke/SURVIVAL/TOXIN/treatment
Whelton, P.K., Williamson, J.D., Louis, G.T., Davis, B.R. and Cutler, J.A. (1996),
Experimental approaches to determining the choice of first-step therapy for
patients with hypertension. Clinical and Experimental Hypertension, 18 (3-4),
569-579.
Abstract: Detection, treatment and control of hypertension is one of the best proven
approaches to prevention of cardiovascular disease. Antihypertensive treatment
trials have convincingly demonstrated that diuretics and beta-blockers reduce the
risk of stroke and coronary heart disease. Corresponding information is not yet
available for newer classes of antihypertensive drug therapy such as calcium
channel blockers, angiotensin converting enzyme inhibitors and alpha, receptor
blockers. Several experimental studies are now addressing this question. The
largest such trial (n=40,000) is the Antihypertensive and Lipid-Lowering
Treatment to Prevent Heart Attack Trial (ALLHAT). This manuscript describes
two studies (TOMHS and the VA study on antihypertensive agents) that
compared several classes of antihypertensive drugs with regard to blood pressure
outcomes and ALLHAT, which is comparing the effect of four first-step
approaches to antihypertensive therapy on combined incidence of fatal coronary
heart disease and non-fatal myocardial infarction
Keywords: ANGINA/angiotensin/angiotensin converting enzyme
inhibitors/beta-blockers/blood pressure/cardiovascular disease/clinical
trials/coronary heart disease/DRUG-THERAPY/epidemiology/heart/high blood
pressure/hypertension/incidence/MILD/myocardial
infarction/MYOCARDIAL-INFARCTION/pharmacology/prevention/risk/stroke
/treatment/trials
Hobbs, L.M., Rayner, T.E. and Howe, P.R.C. (1996), Dietary fish oil prevents the
development of renal damage in salt-loaded stroke-prone spontaneously
hypertensive rats. Clinical and Experimental Pharmacology and Physiology, 23
(6-7), 508-513.
Abstract: 1. Stroke-prone spontaneously hypertensive rats (SHRSP) fed a high salt diet
rapidly develop proteinuria, a marker of renal damage, We have recently shown
that supplementing the diet of these rats with pure omega-3 fatty acids can inhibit
the development of proteinuria. The aim of the present study was to examine the
underlying renal pathology and to see whether a similar benefit could be
obtained with fish oil or canola oil. 2. Diets containing sodium (2% by weight)
and 5% fish oil, canola oil, olive oil or safflower oil (the latter two serving as
controls) were fed to groups of eight young SHRSP and the development of
hypertension and proteinuria was monitored. After 9 weeks, rats were killed and
their kidneys were taken for histological examination and fatty acid analysis.
Urinary protein was characterized electrophoretically. 3. Patterns of protein
excretion were consistent with the appearance of pathological changes in both
glomeruli and tubules. Fish oil inhibited the elevation of blood pressure,
prevented the development of proteinuria and minimized histological lesions,
However, in rats fed canola oil, hypertension and renal damage were equally
severe as in rats fed olive or safflower oil. 4. The prevention of hypertensive
renal damage by dietary fish oil may be attributable to increased incorporation of
long-chain omega-3 fatty acids in the kidney
Keywords: blood pressure/canola/development/diet/DISEASE/FATTY-ACIDS/fish
oil/hypertension/IMMUNE INJURY/INHIBITOR/omega-3 fatty
acids/prevention/proteinuria renal disease/rats/salt/SHRSP/URINARY
ALBUMIN EXCRETION
Pessina, A.C., Serena, L. and Semplicini, A. (1996), Hypertension, coronary artery and
cerebrovascular diseases in the population. Has epidemiology changed in the last
decades? Clinical and Experimental Hypertension, 18 (3-4), 363-370.
Abstract: Life expectancy has significantly increased in the last decades in many western
populations, due to the fall of total and cardiovascular death rate. However,
morbidity from cardiovascular diseases has decreased to a smaller extent. The
overall population risk profile has improved, but it is still unsatisfactory. This is
true for blood pressure control (with only 20% of hypertensive patients achieving
normotension with antihypertensive drugs), hypercholesterolemia (with
bordeline- high serum cholesterol levels in 50% of the population), and smoking
habits. Other potential causes of the poor cardiovascular prevention are: 1) a
limited knowledge of the optimal blood pressure goal with antihypertensive
treatment, 2) scanty information on the long term effects of antihypertensive
drugs on cerebral and coronary circulation. Finally, little is being done to
improve primary prevention in youth, when the slowly progressing
atherosclerotic plaque formation is already on the way. To improve the cost /
effectiveness of cardiovascular prevention, efforts must concentrate on the early
identification of the subjects at the highest risk and on health promotion among
youngsters. Large epidemiological trials conducted from the early 50s have
provided convincing evidence of the multifactorial origin of cardiovascular
diseases and encouraged the implementation of population based primary and
secondary preventive measures, including antihypertensive treatment, as well as
dietary and life-style modifications. It is now time to start asking ourselves
whether or not we are satisfied with the results obtained in terms of reduced
morbidity and mortality, whether these results are the direct consequence of
these measures and whether or not we can do even better. The present work
reviews some of the most recent comparative reports on the epidemiology of
cardiovascular diseases in different populations, and some intervention trials to
answer these questions and to help in identifying the most cost-effective
approach to cardiovascular disease prevention in the next few years
Keywords: arterial hypertension/blood pressure/cardiovascular disease/cardiovascular
diseases/cardiovascular risk factors/cerebrovascular diseases/cholesterol/cost
effectiveness/diseases/epidemiology/health/health
promotion/HYPERTENSION/lifestyle/morbidity/mortality/PRESSURE/preventi
on/primary prevention/secondary prevention/smoking/STROKE/treatment/trials
Borghi, C. and Ambrosioni, E. (1996), Primary and secondary prevention of myocardial
infarction. Clinical and Experimental Hypertension, 18 (3-4), 547-558.
Abstract: The prevention of coronary artery disease (CHD) and particularly of
myocardial infarction (MI) is based on some well designed strategies aimed at
treating both asymptomatic high-risk patients (primary prevention) and patients
with established CHD (secondary prevention). A positive impact from primary
prevention can be basically achieved trough a reduction in high blood pressure
and by correcting dyslipidemia. The benefit can be substantially increased by
smoking cessation, increasing physical exercise, reduction of body weight, use of
post-menopausal oestrogen, moderate alcohol consumption and use of high doses
of vitamin E in those patients who are compliant with the specific strategies.
Secondary prevention of MI can be again obtained by controlling blood pressure
and reducing serum cholesterol in patients surviving acute MI who can also
benefit from the administration of beta-blockers, aspirin and probably
ace-inhibitors particularly in presence of left ventricular dysfunction. We suggest
that in both arms of prevention, significant results can be achieved mainly by a
multifactorial approach capable of correcting all the modifiable risk factors that
contribute to the rather complex pathogenesis of CHD
Keywords: ace-inhibitors/aspirin/beta-blockers/blood
pressure/BLOOD-PRESSURE/CHOLESTEROL/cholesterol/CORONARY
HEART-DISEASE/exercise/hypertension/INTERNAL/MORBIDITY/MORTAL
ITY/myocardial infarction/prevention/primary prevention/risk/risk
factors/secondary prevention/smoking/STROKE/TRIALS/vitamin E
MacMahon, S. and Rodgers, A. (1996), Primary and secondary prevention of stroke.
Clinical and Experimental Hypertension, 18 (3-4), 537-546.
Abstract: Data from prospective observational studies indicate that usual levels of blood
pressure are directly and continuously related to the risk of stroke. a prolonged
difference in usual diastolic blood pressure levels of just 5 mmHg would
eventually confer about a one-third difference in stroke risk, with similar
proportional effects in hypertensives and non- hypertensives. The results of
randomised trials of blood pressure lowering drugs in hypertensive patients
suggest that much or all of this long-term potential stroke avoidance can be
achieved within just a few years of beginning treatment. Overall in 17
randomised trials of antihypertensive treatment, a net blood pressure reduction of
10-12 mmHg systolic and 5-6 mmHg diastolic, conferred a reduction in stroke
incidence of 38% SD 4, with similar reductions in fatal and non-fatal stroke.
Additionally, the sizes of the reductions were similar in trials in mild, moderate
or more severe hypertension, in trials in older or younger patients and in trials in
patients with or without a history of cerebrovascular disease. Because the
proportional effects of treatment were similar in all these groups, the absolute
effects of treatment on stroke varied in direct proportion to the background risk
of stroke. The greatest benefits were, therefore, observed among those with a
history of cerebrovascular disease, those above the age of 60 years, and those
with more severe hypertension
Keywords: antihypertensive treatment/blood
pressure/BLOOD-PRESSURE/cerebrovascular disease/CORONARY
HEART-DISEASE/epidemiology/history/HYPERTENSION/incidence/JAPAN/
MORBIDITY/MORTALITY/prevention/RISK-FACTORS/secondary
prevention/stroke/treatment/TRIAL/TRIALS
Whitlock, G., MacMahon, S., Anderson, C., Neal, B., Rodgers, A. and Chalmers, J.
(1997), Blood pressure lowering for the prevention of cognitive decline in
patients with cerebrovascular disease. Clinical and Experimental Hypertension,
19 (5-6), 843-855.
Abstract: Cerebrovascular disease and high blood pressure both appear to increase the
risk of vascular dementia. PROGRESS aims to investigate whether blood
pressure lowering with an angiotensin converting enzyme inhibitor-based
regimen will reduce the risk of cognitive impairment in patients with a history of
stroke or transient ischaemic attack. A total of at least 6000 patients will be
randomised to receive perindopril (+/- indapamide) or matching placebo(s), with
treatment and follow-up scheduled to continue for at least 4 years. Substudies
will investigate the effects of treatment on cognitive decline in subgroups defined
by apo-E genotype and on white matter lesions assessed by magnetic resonance
imaging. Final results from the study should be available in 2001
Keywords: ALZHEIMERS-DISEASE/angiotensin/blood
pressure/cerebrovascular/cerebrovascular disease/cognitive
impairment/dementia/FRAMINGHAM/high blood
pressure/history/HYPERTENSION/indapamide/magnetic resonance
imaging/MINI-MENTAL-STATE/NEW-YORK/PERFORMANCE/perindopril/
prevention/risk/stroke/transient/treatment/TRIAL/TRIALS/vascular/VASCULA
R DEMENTIA/white matter/WHITE MATTER LESIONS
Richer, C., Vacher, E., Fornes, P. and Giudicelli, J.F. (1997), Antihypertensive drugs in
the stroke-prone spontaneously hypertensive rat. Clinical and Experimental
Hypertension, 19 (5-6), 925-936.
Abstract: The stroke-prone spontaneously hypertensive rat (SHR-SP) is an experimental
model that has been widely used to investigate the potential preventive effects vs
stroke and mortality of numerous antihypertensive agents. Among the latter,
angiotensin I-converting enzyme inhibitors, angiotensin II AT1-receptor blockers
and calcium antagonists have proven to be very effective. The mechanisms
involved in their beneficial effects include limitation of the age-related
alterations of large cerebral arteries' functional parameters, prevention of
fibrinoid necrosis formation in cerebral arterioles and, to a lesser extent,
limitation of the blood pressure rise
Keywords: angiotensin/angiotensin II/antihypertensive drugs/blood pressure/calcium
antagonists/cerebral/CEREBRAL ARTERIOLES/cerebral
vessels/drugs/formation/HYPERTENSION/MECHANICS/mortality/necrosis/N
EW-YORK/prevention/PREVENTS
STROKE/rat/RENIN/SHRSP/stroke/stroke-prone spontaneously hypertensive
rat/TREATMENT WITHDRAWAL
Rodgers, A. and MacMahon, S. (1999), Blood pressure and the global burden of
cardiovascular disease. Clinical and Experimental Hypertension, 21 (5-6),
543-552.
Abstract: Cardiovascular disease is responsible for a large and increasing proportion of
death and disability worldwide. Half of this burden occurs in Asia. This study
assessed the possible effects of population-wide (2% lower DBP for all) and
targeted (7% lower DBP for those with usual DBP greater than or equal to 95
mmHg) BP interventions in Asia, using data from surveys of blood pressure
levels, the Global Burden of Disease Project, Eastern Asian cohort studies and
randomised trials of blood pressure lowering. Overall each of the two
interventions would be expected to avert about one million deaths per year
throughout Asia in 2020. These benefits would be approximately additive. About
half a million deaths might be averted annually by each intervention in China
alone, with about four-fifths of this benefit due to averted stroke. The relative
benefits of these two strategies are similar to estimates made for US and UK
populations. However, the absolute benefits are many times greater due to the
size of the predicted CVD burden in Asia
Keywords: antihypertensive drugs/blood pressure/cardiovascular/cardiovascular
disease/cohort studies/coronary heart
disease/epidemiology/HYPERTENSION/NEW-YORK/population/PREVENTIO
N/RISK-FACTORS/stroke/trials
Liu, L.S., Wang, J.G., Celis, H. and Staessen, J.A. (1999), Implications of the systolic
hypertension in China trial. Clinical and Experimental Hypertension, 21 (5-6),
499-505.
Abstract: In 1988, the Systolic Hypertension in China (Syst-China) Collaborative Group
started to investigate whether active treatment could reduce the incidence of
stroke and other cardiovascular complications of isolated systolic hypertension.
After stratification for center, sex and previous cardiovascular complications,
alternate patients (n = 1253) were assigned nitrendipine 10-40 mg daily, with the
possible addition of captopril 12.5-50.0 mg daily, or hydrochlorothiazide
12.5-50.0 mg daily, or both drugs. In 1141 control patients, matching placebos
were employed similarly. At entry, sitting blood pressure averaged 170 mm Hg
systolic and 86 mm Hg diastolic, age averaged 66 years, and total serum
cholesterol was 5.1 mmol/L. At 2 years, the between-group differences were 9.1
mm Hg systolic (95% confidence interval. 7.6-10.7 mm Hg) and 3.2 mm Hg
diastolic (2.4-4.0). Active treatment reduced total stroke by 38% (p=0.01),
all-cause mortality by 39% (p=0.003), cardiovascular mortality by 39% (p=0.03),
stroke mortality by 58% (p=0.02) and all fatal and nonfatal cardiovascular
endpoints by 37% (p=0.004). In conclusion, antihypertensive treatment prevents
stroke and other cardiovascular complications in older Chinese patients with
isolated systolic hypertension. Treatment of 1000 Chinese patients for 5 years
could prevent 55 deaths, 39 strokes, or 59 major cardiovascular endpoints
Keywords: age/antihypertensive treatment/blood pressure/calcium channel
blocker/captopril/cardiovascular/cardiovascular
mortality/Chinese/cholesterol/complications/control/dihydropyridine/drugs/hydr
ochlorothiazide/hypertension/incidence/isolated systolic
hypertension/mortality/NEW-YORK/prevention/REPUBLIC-OF-CHINA/RISK/
serum/sex/STROKE/stroke/treatment
Elliott, P., Nichols, R. and Chee, D. (1999), Quantifying risk of death and disability
associated with raised blood pressure. Clinical and Experimental Hypertension,
21 (5-6), 571-582.
Abstract: Raised blood pressure is one of the most important underlying risk factors for
morbidity and mortality in the world today, ranking alongside tobacco in
estimates of the worldwide attributable burden of mortality. It is a major risk
factor for coronary heart disease and the major risk factor for stroke. Taken
together, the cardiovascular diseases are estimated to account for some 28% of
all deaths in the world; Already many more of such deaths are occurring in the
developing than the developed world, and this burden of disease is set to worsen
as a result of demographic changes in the poorer countries, together with
adoption of Western lifestyle. The development of unfavourable blood pressure
patterns in populations is a key factor underlying this worldwide epidemic. Both
primary prevention (for example through improved diet) and secondary
prevention (through drug treatment and non-pharmacologic approaches) are
needed
Keywords: blood pressure/cardiovascular/cardiovascular diseases/cardiovascular
epidemiology/coronary heart
disease/development/diet/DISEASE/diseases/England/heart/high blood
pressure/hypertension/INTERSALT/lifestyle/morbidity/mortality/NEW-YORK/
POPULATIONS/prevention/primary/primary prevention/risk/risk factor/risk
factors/secondary prevention/stroke/tobacco/treatment
Yamori, Y. (1999), Implication of hypertensive rat models for primordial nutritional
prevention of cardiovascular diseases. Clinical and Experimental Pharmacology
and Physiology, 26 (7), 568-572.
Abstract: 1. Various substrains maintained during selective sib-mating contributed to the
establishment of spontaneously hypertensive rats (SHR) with a variety of clinical
features. 2. Stroke-prone SHR (SHRSP), developing haemorrhagic and/or
ischaemic stroke spontaneously, are regarded as a model for osteoporosis. 3. The
genetic mechanisms of spontaneous hypertension hale been attributed
pathophysiologically to neural and structural vascular alterations. 4. The
mechanisms of stroke are ascribed to the limited regional oxygen and nutrient
supplies to the brain areas fed by perforating arteries. 5. The genome-wide
Linkage analysis on the F2 obtained by crosses of SHRSP with normotensive
strains has demonstrated different gene loci contributing to the development and
maintenance of hypertension during the ageing process and also genes
influencing the susceptibility to stroke without any effect on blood pressure. 6.
Experimental studies in SHRSP revealed that stroke could be prevented by
protein, Ca- or Mg-supplemented diets, particularly if given in the early stage,
indicating the importance of primordial nutritional prevention of cardiovascular
diseases (CVD). 7. Experimental findings in SHRSP as well as epidemiological
studies on nutrition and CVD indicate the future avenue towards
'predictive-preventive medicine' for CVD
Keywords: arteries/AUSTRALIA/blood
pressure/BLOOD-PRESSURE/brain/cardiovascular/cardiovascular
diseases/development/diseases/gene/genes/genetic/hypertension/ischaemic
stroke/linkage
analysis/nutrition/osteoporosis/prevention/rat/rats/SHR/SHRSP/spontaneously
hypertensive rats/stroke/STROKE-PRONE/stroke-prone spontaneously
hypertensive rats/vascular
Fujishima, M. and Tsuchihashi, T. (1999), Hypertension and dementia. Clinical and
Experimental Hypertension, 21 (5-6), 927-935.
Abstract: Vascular dementia (VD) is more prevalent than Alzheimer's disease (AD) in
Japan, while AD is more common in Western countries. In the Hisayama study, a
community-based cohort study of Japan, the prevalence of VD decreased in men
during the 7-years (1985-1992) follow-up period, while the prevalence of AD
remained unchanged both in men and women. The incidence of dementia
increases with age,particularly AD aged 85 or older. Hypertension is a major risk
factor for VD. Other risk factors include age, prior stroke, diabetes, alcohol
intake, heart disease, and smoking. In contrast, age, a family history of dementia,
a low educational level, and low physical activity are risk factors for AD. The
role of hypertension in AD remains controversial; there,has been positive,
negative, or no association existed between blood pressure levels and AD. A
recent clinical trial has disclosed the potential preventive effect of
antihypertensive treatment on the incidence of dementia, especially of AD.
Although the role of vascular factors for the pathogenesis of AD is becoming
recognized, the effectiveness of antihypertensive treatment on-the prevention of
AD should be further clarified in the future studies
Keywords: age/aged/alcohol/Alzheimer's
disease/ALZHEIMERS-DISEASE/antihypertensive treatment/blood
pressure/BLOOD-PRESSURE/cohort
study/dementia/diabetes/epidemiology/heart/HISAYAMA/history/hypertension/i
ncidence/JAPANESE COMMUNITY/men/NEW-YORK/physical
activity/POPULATION/PREVALENCE/prevention/risk/risk factor/risk
factors/RISK-FACTORS/smoking/stroke/treatment/vascular/VASCULAR
DEMENTIA/women
Schmidt, D., Vaith, P. and Hetzel, A. (2000), Prevention of serious ophthalmic and
cerebral complications in temporal arteritis? Clinical and Experimental
Rheumatology, 18 (4), S61-S63.
Abstract: Patients Five patients (mean age 81.6 years) developed bilateral blindness and
3 additional patients suffered cerebral strokes (mean age 58 years) due to
temporal arteritis. Bilateral blindness and strokes occurred despite corticosteroid
treatment. Results In all patients with temporal arteritis, the diagnosis was made
too late. Patients with bilateral blindness were referred to the Eye Hospital when
one eye had already become blind. The delay between the fil st symptoms and
blindness in one eye was (average) 7 weeks. The interval between blindness of
the first and second eyes was (average) 5 days in 3 patients, and simultaneous
blindness in both eyes occurred in 2 patients. The other eye also became blind
despite mega-doses of prednisone in 3 patients. Three additionalpatients already
showed neurological signs and symptoms at the beginning of the temporal
headache. All 3 patients developed strokes after some weeks or months. The
wrong diagnosis was made in the first examination(s) by the physician with
patients having prodromal signs or symptoms, but who also showed signs of
other vascular diseases (diabetes mellitus, hypertension or occlusion of the
internal carotid artery) which masked the inflammatory disease of temporal
arteritis. Conclusions Early diagnosis is essential to prevent severe complications.
In patients with a cerebral stroke the early neurological deficits are warning signs
which means that one must observe the patient regularly at short intervals. After
the diagnosis has been settled, treatment of the patients for several months with a
high dosage of corticosteroids is mandatory
Keywords: age/blindness/carotid/carotid
artery/cerebral/complications/corticosteroid/diabetes/diabetes
mellitus/diagnosis/diseases/essential/Germany/giant cell arteritis/GIANT-CELL
ARTERITIS/headache/hypertension/internal carotid artery/intracranial
arteritis/INVOLVEMENT/stroke/temporal arteritis/treatment/vascular
Chalmers, J. and Chapman, N. (2001), Progress in reducing the burden of stroke.
Clinical and Experimental Pharmacology and Physiology, 28 (12), 1091-1095.
Abstract: 1. The burden of stroke worldwide is growing rapidly, driven by an ageing
population and by the rapid rate of urbanization and industrialization in the
developing world. There are approximately 5 million fatal and 15 million
non-fatal strokes each year and over 50 million survivors of stroke alive,
worldwide, today. 2. The most important determinant of stroke risk is blood
pressure, with a strong, continuous relationship between the level of the systolic
and diastolic pressures and the risk of initial and recurrent stroke, in both
Western and Asian populations. 3. Randomized clinical trials have clearly
demonstrated that blood pressure lowering reduces the risk of initial stroke by
35-40% in hypertensive patients; but, until recently, there was no conclusive
evidence that blood pressure lowering was effective in the secondary prevention
of stroke. 4. The Perindopril Protection Against Recurrent Stroke Study
(PROGRESS) has provided definitive evidence that blood pressure lowering in
patients with previous stroke or transient ischaemic attack (TIA) reduces the
incidence of secondary stroke by 28%, of major vascular events by 26% and of
major coronary events by 26%. These reductions were all magnified by
approximately 50% in a subgroup of patients in whom the
angiotensin-converting enzyme inhibitor perindopril was routinely combined
with the diuretic indapamide. 5. Successful global implementation of a treatment
with perindopril and indapamide in patients with a history of stroke or TIA
would markedly reduce the burden of stroke and could avert between 0.5 and one
million strokes each year, worldwide
Keywords: ageing/angiotensin converting enzyme inhibitor/angiotensin-converting
enzyme inhibitors/Australia/blood pressure/blood pressure
lowering/BLOOD-PRESSURE/CEREBROVASCULAR- DISEASE/clinical
trials/CORONARY HEART-DISEASE/dementia/disability and
dependency/diuretics/DOSE-RESPONSE/FAILURE/history/hypertension/HYPE
RTENSION/incidence/indapamide/ischaemic/major coronary
events/perindopril/PERINDOPRIL/PLACEBO/population/prevention/PROGRE
SS/recurrent stroke/RISK/secondary/secondary
prevention/stroke/THERAPY/TIA/transient/transient ischaemic
attack/treatment/trials/vascular/vascular events
Ledingham, J.M. and Laverty, R. (2002), Fluvastatin remodels resistance arteries in
genetically hypertensive rats, even in the absence of any effect on blood pressure.
Clinical and Experimental Pharmacology and Physiology, 29 (10), 931-934.
Abstract: 1. The aims of the present study were, first, to determine whether, in the
genetically hypertensive (GH) rat, fluvastatin would lower blood pressure and
remodel mesenteric resistance arteries (MRA) and the basilar artery and, second,
to see whether treatment with a combination of fluvastatin and the angiotensin
receptor antagonist valsartan would have any extra beneficial effect on blood
pressure and vascular remodelling. 2. Male GH rats had tail-cuff systolic blood
pressure (SBP) monitored weekly from the age of 7 to 12 weeks. Groups (n = 12-
14) were treated with fluvastatin (4 mg/kg per day), valsartan (5 mg/kg per day),
both mixed in with chow, or a combination of fluvastatin 4 mg/kg per day +
valsartan 5 mg/kg per day. Untreated GH and a group of normotensive Wistar (N)
rats served as control groups. 3. At 12 weeks of age, intra-arterial (i.a.) blood
pressure was measured by femoral cannulation and rats were then perfused (at
the SBP of the animal) with Tyrode's solution containing heparin and papaverine
followed by 2.5% glutaraldehyde in Tyrode's solution; MRA and basilar arteries
were embedded in Technovit. Serial sections were cut and Giemsa stained and
stereological methods used to obtain media width, lumen diameter, medial
cross-sectional area (CSA) and the ratio of media width to lumen diameter.
Hearts were weighed to determine left ventricular (LV) mass. 4. Fluvastatin had
no effect on blood pressure or LV mass, whereas valsartan given alone or with
fluvastatin significantly reduced both parameters. 5. In MRA, fluvastatin reduced
medial CSA, increased lumen size and, therefore, probably decreased vascular
resistance. The media/lumen ratio was reduced to a level below that seen with
the combination treatment and to below that of the N group. 6. In the basilar
artery, fluvastatin and valsartan showed similar outward remodelling of the
lumen and reduction in the media/lumen ratio. The combination treatment group
showed, in addition, a reduction in medial CSA and an even lower ratio than the
GH group on fluvastatin or valsartan alone or the N group. 7. Although
fluvastatin has no effect on blood pressure, it does cause significant remodelling
of MRA and the basilar artery. These beneficial structural changes in a peripheral
resistance artery bed and in an artery involved in regulating resistance in the
brain are worthy of further study
Keywords: age/angiotensin/animal/arteries/AUSTRALIA/basilar artery/blood
pressure/brain/CEREBRAL-ARTERIES/CHOLESTEROL/combination/control/
ENDOTHELIAL DYSFUNCTION/fluvastatin/genetically hypertensive
rat/heparin/left ventricular/LOVASTATIN/MRA/NITRIC-OXIDE
SYNTHASE/PREVENTION/rat/rats/REDUCTASE INHIBITORS/resistance
arteries/STATINS/STROKE/systolic blood/systolic blood
pressure/treatment/valsartan/VALSARTAN/vascular/vascular remodelling
Leys, D., Deplanque, D., Lucas, C. and Bordet, R. (2002), Hypolipemic agents for
stroke prevention. Clinical and Experimental Hypertension, 24 (7-8), 573-594.
Abstract: An important issue for stroke prevention is identification and treatment of risk
factors such as hypercholesterolemia. The four reasons to test hypolipidemic
agents in stroke prevention are: (i) a statistical link between elevated low-density
lipoprotein cholesterol (LDL-c) or decreased high-density lipoprotein cholesterol
(HDL-c) and ischemic stroke; (ii) a reduction in vascular risk in randomized
trials in patients with coronary heart disease; (iii) evidence of a decreased plaque
progression under statins, (iv) pooled analyses of primary and secondary
prevention trials showing that reduction of total serum cholesterol reduces the
incidence of stroke, especially with the highest rate of cholesterol reduction, and
in patients with the highest risk of stroke (i.e., with statins in secondary
prevention trials), and (v) prophylactic neuroprotection induced by
hypolipidemic agents in animal models of cerebral ischemia. Data provided by
trials conducted in subjects with coronary heart disease and in asymptomatic
individuals should now be confirmed in stroke patient
Keywords: animal/asymptomatic/atherosclerosis/AVERAGE CHOLESTEROL
LEVELS/BRAIN ISCHEMIC TOLERANCE/CAROTID
ATHEROSCLEROSIS/cerebral/cerebral hemorrhage/cerebral
ischemia/cholesterol/COA REDUCTASE INHIBITORS/COENZYME-A
REDUCTASE/coronary heart disease/CORONARY
HEART-DISEASE/dementia/DENSITY-LIPOPROTEIN
CHOLESTEROL/disease/fibrates/heart/heart disease/high density
lipoprotein/high-density lipoprotein
cholesterol/hypercholesterolemia/HYPERTENSION/incidence/ischemia/ischemi
c/ischemic stroke/low density lipoprotein/low-density lipoprotein
cholesterol/MYOCARDIAL-INFARCTION/neuroprotection/NEW-YORK/NIT
RIC-OXIDE SYNTHASE/plaque/prevention/primary/primary and secondary
prevention/randomized/randomized trials/risk/risk factors/secondary/secondary
prevention/serum/SERUM- CHOLESTEROL/statins/statistical/stroke/stroke
prevention/transient ischemic attacks
(TIA)/treatment/trials/triglycerides/vascular/vascular risk
Barnett, H.J.M. (2002), Stroke prevention in the elderly. Clinical and Experimental
Hypertension, 24 (7-8), 563-571.
Abstract: The incidence of stroke and risk factors peak in subjects greater than or equal
to75 years. Highest risk patients benefit most from effective therapy. For this
reason, all strategies of proven value in stroke prevention must be assiduously
applied. Control of hypertension, hyperlipidemia, diabetes mellitus and cessation
of cigarette smoking are obligatory at all ages but are of special importance in
the elderly. Antithrombotic drugs have been proven beneficial for patients at
high risk. Lower risk subjects, including those with asymptomatic carotid artery
disease, gain no proven benefit from anti-platelet drugs. Patients with
non-valvular atrial fibrillation (NVAF), a condition that increases with age,
require anticoagulant therapy. Strict regulation of the INR is required otherwise
aspirin is recommended. Without evidence of organ failure, elderly patients with
severely stenotic symptomatic carotid artery disease should receive
endarterectomy. They benefit most. The evidence for benefit from
endarterectomy in asymptomatic subjects at any age is weak and cannot be
recommended
Keywords: ACETYLSALICYLIC-ACID/age/anticoagulant/anticoagulant
therapy/antiplatelet/antiplatelet drugs/antiplatelet
therapy/ASPIRIN/asymptomatic/ASYMPTOMATIC CAROTID
STENOSIS/atrial fibrillation/carotid/carotid artery/carotid artery disease/carotid
endarterectomy/cigarette smoking/diabetes/diabetes
mellitus/disease/drugs/elderly/elderly
patients/ENDARTERECTOMY/fibrillation/high
risk/hyperlipidemia/HYPERTENSION/incidence/INR/NEW-YORK/non-valvula
r atrial fibrillation/nonvalvular atrial fibrillation/prevention/RISK/risk
factors/smoking/stroke/stroke prevention/therapy/TICLOPIDINE/TRIAL
McInnes, G.T. (2002), Clinical trials and tribulations. Clinical and Experimental
Pharmacology and Physiology, 29 (11), 951-955.
Abstract: 1. Pharmacologists should be involved in all stages of drug development.
Often neglected is the final step, the clinical trials and other studies that
determine clinical utility. The present article illustrates how
pharmacoepidemiology can facilitate evaluation of the clinical potential of
different drugs used to treat hypertension. 2. The evidence base for the drug
treatment of hypertension is very strong. Large-scale outcome trials, largely
based on diuretics, indicate that stroke events are prevented to the extent
expected from blood pressure reduction, but there appears to be a shortfall in the
prevention of coronary heart disease events. 3. On theoretical grounds, newer
agents may be expected to have benefits in coronary heart disease prevention
beyond blood pressure reduction. Recent trials with angiotensin-converting
enzyme inhibitors and calcium channel blockers suggest no advantage over
conventional drugs, but short-comings in these studies mean that each is
uninformative. 4. Observational studies based on pharmacoepidemiological
principles offer an alternative approach to evaluating outcomes in treated
hypertensives. 5. Evidence from the Glasgow Blood Pressure Clinic database
suggest that there are outcome differences between antihypertensive agents.
Angiotensin-converting enzyme inhibitor treatment is associated with a mortality
advantage, whereas calcium channel blocker therapy is associated with a poorer
prognosis. Preliminary findings from a primary care database support these
observations. 6. Long-term follow up of a well-documented high-risk clinical
population may allow detection of outcome differences not apparent in relatively
short-term clinical trials. 7. Appropriate interpretation of observational data
necessitates an understanding of the strengths and limitations of observational
data. Clinical pharmacologists have a critical role in design and evaluation of
pharmacoepidemiology studies
Keywords: angiotensin converting enzyme inhibitors/angiotensin-converting enzyme
inhibitors/antihypertensive agents/AUSTRALIA/blocker/BLOCKERS/blood
pressure/BLOOD-PRESSURE/calcium/calcium channel/calcium channel
blocker/calcium channel blockers/CALCIUM-CHANNEL
BLOCKADE/CANCER/CARDIOVASCULAR MORBIDITY/clinical
pharmacology/clinical trials/coronary heart
disease/design/detection/development/disease/diuretics/drugs/evaluation/experim
ental pharmacology/heart/heart disease/high
risk/HYPERTENSION/hypertension/interpretation/MORTALITY/MYOCARDI
AL-INFARCTION/observational
studies/outcome/pharmacoepidemiology/population/prevention/primary/primary
care/prognosis/RANDOMIZED TRIAL/RISK/stroke/therapy/treatment/trials
Bornstein, N., Corea, F., Gallai, V. and Parnetti, L. (2002), Heart-brain relationship:
Atrial fibrillation and stroke. Clinical and Experimental Hypertension, 24 (7-8),
493-499.
Abstract: In Western countries, stroke is the second cause of death and the first cause of
disability. Cardiogenic embolism is the most frequent cause of recurrent strokes.
Nonvalvular atrial fibrillation (NVAF) is the most common source of
cardiogenic embolism, with a stroke recurrence rate of about 10% per year.
Randomised trials have shown that anticoagulation and aspirin are safe in
patients with NVAF, leading to 70% and 22% risk reduction of strokes,
respectively. Many potential candidates to anticoagulation fail to receive the
appropriate treatment for primary and secondary prevention. More efforts should
be spent to increase the number of treated subjects, in order to achieve effective
prevention on stroke
Keywords: ACUTE
MYOCARDIAL-INFARCTION/ANTICOAGULATION/ASPIRIN/atrial
fibrillation/ATTITUDES/cause of
death/death/disability/EMBOLISM/fibrillation/FRAMINGHAM/HYPERTENSI
ON/MANAGEMENT/NEW-YORK/OUTCOMES/PREVENTION/primary/prim
ary and secondary prevention/recurrence/RISK/secondary/secondary
prevention/stroke/stroke prevention/stroke recurrence/treatment/trials
Regesta, G. (2002), Medical therapy for secondary prevention of stroke. Clinical and
Experimental Hypertension, 24 (7-8), 555-562.
Abstract: The identification and modification of risk factors for stroke and their
appropriate management can lead to reduction of stroke incidence. The real
impact on recurrences of risk factors associated with lifestyles has not been
thoroughly investigated, and the possible role of their modification in secondary
prevention is principally extrapolated from primary prevention studies. On the
other hand, several pathological conditions such as hypertension, atria]
fibrillation, carotid stenosis, and diabetes are known to favour the risk of
recurrence. Available antiplatelet regimens offer only partial protection against
stroke and more efficacious antithrombotic agents would be useful. There is no
doubt that warfarin is effective in preventing recurrence in stroke patients with
atrial fibrillation. However, a careful etiological subtyping of stroke is
recommended before starting treatment
Keywords: antiplatelet/antithrombotic/antithrombotic agents/ASPIRIN/atrial
fibrillation/ATRIAL-FIBRILLATION/carotid/carotid
stenosis/CEREBRAL-ISCHEMIA/CEREBROVASCULAR-DISEASE/COMM
UNITY-STROKE/diabetes/fibrillation/HYPERTENSION/incidence/ISCHEMIC
STROKE/management/NEW-YORK/prevention/primary/primary
prevention/PROJECT/protection/RANDOMIZED
TRIAL/recurrence/REDUCTASE INHIBITORS/risk/risk factors/risk factors for
stroke/RISK- FACTORS/secondary/secondary prevention/stenosis/stroke/stroke
incidence/therapy/treatment/warfarin
Wang, H., Delaney, K.H., Kwiecien, J.M., Smeda, J.S. and Lee, R.M.K.W. (1997),
Prevention of stroke with perindopril treatment in stroke-prone spontaneously
hypertensive rats. Clinical and Investigative Medicine-Medecine Clinique et
Experimentale, 20 (5), 327-338.
Abstract: Objective: To determine the protective effects of perindopril treatment in the
prevention of stroke and the relation between preventive effects and the
histopathology of the brain and kidneys in male stroke-prone spontaneously
hypertensive rats (SHRSP). Design: Prospective animal study. Interventions:
Beginning at 6 weeks of age, SHRSP were treated with either distilled water
(control) or perindopril for different periods (8, 12 or 24 weeks) and at different
dosages (1 or 4 mg/kg per day). Outcome measures: Regular determination of
systolic blood pressure, heart rate and body weight until death; at necropsy,
macroscopic and microscopic examinations of the brain and kidneys. Results:
Control SHRSP developed severe hypertension (up to 250 mm Hg) by 11 weeks
of age and died of stroke within 14 weeks of age. Treatment with perindopril (4
mg/kg per day for 8 or 12 weeks or either 1 or 4 mg/kg per day for 24 weeks)
attenuated the blood pressure rise and prevented stroke. In untreated SHRSP, the
last blood pressure measurement before the first stroke sign was significantly
higher than in SHRSP of the same age treated with perindopril. Withdrawal of
the treatment resulted in a rise in blood pressure in all the treatment groups, to
approximately 260 mm Hg within 4 weeks. Most of the rats treated for 8 or 12
weeks died within 10 weeks after withdrawal of treatment, whereas those treated
for 24 weeks survived up to 43 weeks of age. Treatment also prevented damage
to the brain and kidneys and reduced the severity of lesions in the brain and
kidneys after treatment withdrawal. Conclusion: Treatment of SHRSP with
perindopril prevents stroke through the suppression of blood pressure rise and
prevention of tissue damage in the brain and the kidneys. Longer treatment
decreased the rate of mortality due to stroke after the withdrawal of treatment as
well as the severity of lesions in the brain and kidneys
Keywords: age/animal/ASSOCIATION/blood pressure/control/heart/HEMORRHAGIC
STROKE/hypertension/mortality/perindopril/prevention/rats/severity/SHRSP/str
oke/stroke-prone spontaneously hypertensive rats/treatment
Wikstrand, J. (1991), Reducing the Risk for Coronary Events and Stroke in
Hypertensive Patients - Comments on Present Evidence. Clinical Cardiology, 14
(7), 25-35.
Abstract: Therapeutic options for initial antihypertensive treatment include the four most
popular classes of drugs: diuretics, beta blockers, angiotensin-converting enzyme
(ACE) inhibitors, and calcium antagonists. The practitioner must decide which
agent is appropriate for each patient, the main goal of treatment being to prevent
stroke and coronary events-sudden death and myocardial infarction. A 40%
reduction in stroke can probably be achieved with any antihypertensive treatment,
but data show that it is much more difficult to reduce the risk of coronary events.
Available evidence from studies in men indicates that certain beta blockers are
superior to thiazide diuretics for the prevention of coronary events. Results from
the Metoprolol Atherosclerosis Prevention in Hypertensives (MAPHY) Trial
showed that the risk for coronary events was 24% lower in patients receiving
metoprolol than in patients receiving diuretics (p 4.1), were 28.3, 14.1, and 15.6%. Patient
involvement in treatment positively influenced quality of control. By contrast,
age 70-80 years or absence of congestive heart failure negatively affected quality
of anticoagulation [p = 0.07, odds ratio (OR), 1.7 (95% confidence interval,
0.94-3.08), p = 0.014, OR, 2.06 (95% confidence interval, 1.15-3.7) respectively].
The percentage of patients admitted with stroke who had been adequately
anticoagulated was significantly lower than that of patients who had no stroke
(21 vs. 44.4%). Adequacy of anticoagulation in patients with cardiac prosthetic
valves was superior compared with the rest of the patient population (56.7 vs.
42% with optimal, and only 14.5 vs. 28.3% with poor anticoagulation,
respectively), indicating that under the same conditions a better quality of
treatment could be achieved
Keywords: age/anticoagulation/ANTITHROMBOTIC THERAPY/atrial
fibrillation/bleeding/cardiac/CARE/chronic atrial
fibrillation/community/congestive heart
failure/control/fibrillation/follow-up/heart/heart
failure/hospital/INR/International Normalized Ratio/International Normalized
Ratio control/Israel/MANAGEMENT/ORAL
ANTICOAGULATION/population/prevention/stroke/STROKE
PREVENTION/treatment/UNIVERSITY HOSPITALS/valves/WARFARIN
White, W.B. (2003), Clinical trial experience around the globe: Focus on calcium-
channel blockers. Clinical Cardiology, 26 (2), 7-11.
Abstract: Although certain classes of drugs appear to possess benefits apart from their
blood-pressure lowering capability, reduction of blood pressure remains the
single most important action of antihypertensive therapy. Calcium-channel
blockers (CCBs) have long been recognized as potent agents for hypertension
therapy. This is especially true for the prevention of stroke in hypertensive
patients as evidenced from the Systolic Hypertension in Europe (Syst-Eur) and
Systolic Hypertension in China (Syst-China) trials with a long acting
dihydropyridine CCB. The same can be said for beta blockers in patients post
myocardial infarction. However, most recent clinical trials have underscored the
necessity of multiple drug therapy to achieve the goals of blood pressure
reduction coupled with outcomes reduction. For example, the many recent
large-scale clinical trials have required an average of three or more agents to
achieve goal. Thus, the paradigm for hypertension management has been altered
to determine the best treatment regimen rather than the best initial agent. While
response rates to individual agents across a wide spectrum of patients vary little,
not all drugs are equally suited as companion products. In this article, we discuss
the most recent outcome trials with the long acting CCBs alone or in
combination with other drugs. The evidence shows that calcium antagonists
remain an important part of hypertension management, including in those
individuals at risk of cardiac and cerebrovascular events
Keywords: ACTIVE TREATMENT/ANTAGONISTS/ANTIHYPERTENSIVE
THERAPIES/antihypertensive therapy/benefits/beta-blockers/blood
pressure/blood pressure lowering/calcium/calcium antagonists/calcium
channel/calcium channel
blockers/calcium-antagonists/cardiac/CARDIOLOGY/cardiovascular
events/CARDIOVASCULAR MORBIDITY/cerebrovascular/China/CLINICAL
CARDIOLOGY/clinical trials/combination/CT/dihydropyridine/drug/drug
safety/drug therapy/drugs/Europe/hypertension/infarction/ISOLATED
SYSTOLIC HYPERTENSION/management/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/OLDER
PATIENTS/outcome/OUTCOMES/outcomes
research/prevention/RANDOMIZED
TRIAL/RISK/stroke/therapy/treatment/trial/trials/USA
Panagiotopoulos, K., Toumanidis, S., Vemmos, K., Saridakis, N. and Stamatelopoulos,
S.H. (2003), Secondary prognosis after cardioembolic stroke of atrial origin: The
role of left atrial and left atrial appendage dysfunction. Clinical Cardiology, 26
(6), 269-274.
Abstract: Background: Secondary prevention studies for cardioembolic strokes show a
remarkable variability in stroke recurrence rates. Various reports have raised
questions regarding differences in baseline clinical characteristics and in
methodology to explain this wide variability. Hypothesis: The purpose of the
present study is to examine the 2-year outcome after first cardioembolic stroke of
atrial origin and to correlate secondary prognosis with left atrial and left atrial
appendage dysfunction. Methods: Baseline evaluation included computed
tomographic and/or magnetic resonance scanning, Doppler scanning, digital
subtraction angiography, and transthoracic and transesophageal
echocardiography to establish the diagnosis of atrial source of emboli.
Twenty-six patients in nonrheumatic atrial fibrillation and 13 in sinus rhythm
were followed for recurrent stroke and vascular death as endpoints (event+/-).
Results: Patients in sinus rhythm had a total of 23% (standard deviation +/- 12%)
recurrence rate. All event (+) patients were on aspirin and died from this second
cardioembolic stroke. Of patients in nonrheumatic atrial fibrillation, 50% were
event (+) at the end of the first year (death rate 46%). Patients on warfarin
therapy had 20% recurrence rate versus 70% on aspirin (relative risk 0.18, 95%
confidence interval, 0.05-0.48, p 0.041). Inward peak velocity of left atrial
appendage was the only echocardiographic variable significantly reduced in
event (+) patients (21 +/- 7 vs. 31 +/- 17 cm/s, p 0.048). Conclusions: Patients
with nonrheumatic atrial fibrillation and first atrial origin cardioembolic stroke
are at increased risk for recurrence if severe dysfunction of the left atrial
appendage is present and if they do not receive warfarin treatment. Patients with
sinus rhythm and first atrial origin cardioembolic stroke form a small stroke
subgroup, in which recurrences are accompanied by a remarkably high death rate
Keywords: angiography/aspirin/atrial/atrial appendage/atrial
fibrillation/cardioembolic/cardioembolic stroke/CARDIOLOGY/CLINICAL
CARDIOLOGY/death/diagnosis/digital subtraction/digital subtraction
angiography/Doppler/echocardiography/emboli/evaluation/EVENTS/FIBRILLA
TION/FLOW/left atrial
appendage/methodology/nonrheumatic/outcome/PREVENTION/prognosis/recur
rence/recurrent stroke/relative risk/risk/secondary/sinus rhythm/stroke/stroke
recurrence/therapy/transesophageal
echocardiography/treatment/USA/vascular/warfarin
Gotto, A.M. (2003), Risks and benefits of continued aggressive statin therapy. Clinical
Cardiology, 26 (4), 3-12.
Abstract: The 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase
inhibitors, or statins, are a well-tolerated, effective class of medications for the
reduction of low-density lipoprotein cholesterol (LDL-C) and total cholesterol
levels. Extensive data from clinical trials demonstrate that these agents reduce
fatal and nonfatal cardiovascular risk in primary and secondary prevention
patients, including women and the elderly. A threshold value for LDL-C
reduction below which there is no further clinical benefit has not yet been
identified. In the Heart Protection Study (HPS), significant relative risk reduction
occurred even among patients with LDL-C levels 12 mu mol/l should increase and/or supplement their
dietary intake of vitamins
Keywords: adhesion molecules/age/atherosclerosis/cardiovascular/cardiovascular
disease/cardiovascular
diseases/CHRONIC-RENAL-FAILURE/coagulation/CORONARY-ARTERY
DISEASE/diabetes/diagnosis/diet/dietary
intake/disease/diseases/EARLY-PREGNANCY LOSS/elderly/elderly
subjects/ENDOTHELIAL-CELLS/FOLIC-ACID/formation/Germany/history/ho
mocysteine/hyperhomocysteinemia/hyperlipidemia/LDL/metabolism/METHYL
ENETETRAHYDROFOLATE REDUCTASE/METHYLMALONIC
ACID/methylmalonic acid/muscle/PERIPHERAL
VASCULAR-DISEASE/PLASMA HOMOCYSTEINE
LEVELS/postmenopausal women/prevalence/prevention/prospective
studies/renal/renal disease/risk/risk
factor/S-ADENOSYLMETHIONINE/serum/smooth/stroke/therapy/thrombosis/t
reatment/vegetarians/venous thrombosis/vitamin deficiency/vitamins/women
Goldenberg, G.M., Silverstone, F.A., Rangu, S. and Leventer, S.L. (1999), Outcomes of
long-term anticoagulation in frail elderly patients with atrial fibrillation. Clinical
Drug Investigation, 17 (6), 483-488.
Abstract: Objective: To assess the outcomes of long-term anticoagulation in elderly
nursing home patients with atrial fibrillation (AF) and investigate the influence
of age, gender and co-morbid conditions. Design: A retrospective chart review
was performed in five randomly selected nursing facilities. Patients: Thirteen
males and 74 females with nonrheumatic AF, and a mean age of 82.4 years (SD
7.7 years) were included; 74 patients (85%) were older than 75 years. 92% were
Caucasian, 74% had a prior cerebral event [61 disabling strokes and three
transient ischaemic attacks (TIA)]. All had one to five co-morbid conditions
known to be stroke risk factors (mean 2.7, SD 0.9). Two and more risk factors
were present in 91% of the patients, and three and more risk factors were present
in 63% of the patients. Interventions: Treatment with warfarin was given for 12
to 72 months, (mean 25.8 months, SD 4.3 months). The mean dose of warfarin
was 2.8mg (SD 1.1mg). Twelve monthly international normalised ratio (INR)
values were extracted for each patient. Outcome Measures: A stroke/TIA or a
major bleed was considered an adverse outcome. A multivariate logistic
regression model was used to analyse the data. Results: Sixteen patients (18.3%)
had adverse outcomes: four strokes, one TIA and 11 bleeds. Half of the events,
three strokes and five bleeds, were fatal. Gastro-intestinal bleeds had a 56%
mortality rate. Patients with and without adverse outcomes were similar in terms
of age and intensity of anticoagulation (mean INR 2.1, SD 0.5 and 0.4). Adverse
events were seen in 12% of females and in 54% of males. The influence of
gender was independent of age, number of co-morbid conditions and intensity of
anticoagulation entered in the multivariate model. Conclusions: The patients in
this study had a rate of bleeds higher than in reported clinical trials. Their older
age (85% older than 75 years) and greater co-morbidity (91% had more than two
stroke risk factors) were the likely causes of this difference. The outcomes of
anticoagulation were better in females than in males. Further studies are required
on outcomes of anticoagulation in elderly patients with AF
Keywords: AF/age/anticoagulation/atrial fibrillation/AUCKLAND/cerebral/clinical
trials/comorbidity/COMPLICATIONS/DRUG/elderly/fibrillation/INFARCTION
/INR/mortality/NEW-ZEALAND/nonrheumatic/PREVALENCE/PREVENTIO
N/PROTHROMBIN TIME/review/risk/risk
factors/STROKE/THERAPY/TIA/transient/transient ischaemic
attacks/trials/WARFARIN
Gallerani, M., Manfredini, R., Donega, P., Lanza, F., Da Busti, M., Vigna, G.B. and
Fellin, R. (2000), Adverse haematological effects of ticlopidine - A report of four
cases. Clinical Drug Investigation, 19 (3), 231-237
Keywords: ANTIPLATELET/ASPIRIN/AUCKLAND/CHINESE
PATIENTS/CHOLESTATIC
HEPATITIS/DRUG/NEUTROPENIA/NEW-ZEALAND/SECONDARY
PREVENTION/SEVERE
APLASTIC-ANEMIA/STROKE/THERAPY/THROMBOTIC
THROMBOCYTOPENIC PURPURA/ticlopidine
Wu, N., Zhu, J.R. and Chen, K.A. (2002), Tolerability of ramipril 10 mg/day in
high-risk cardiovascular Chinese patients. Clinical Drug Investigation, 22 (11),
771-781.
Abstract: Objective: The aim of this study was to investigate the tolerability of ramipril
10 mg/day in high-risk cardiovascular Chinese patients, following similar criteria
to those used for patient selection in the Heart Outcomes Prevention Evaluation
(HOPE) study and through the collection of adverse event data by Chinese
cardiologists. Design and subjects: This was a non- comparative study with
single-group non-blind assessment carried out in 76 nationwide investigational
sites. The target population was around 1000 patients. Men and women aged
greater than or equal to55 years were eligible for the study if they had one of the
following risk factors for developing major cardiovascular events: a history of
coronary artery disease, stroke, peripheral vascular disease or diabetes plus at
least one other cardiovascular risk factor. Patients initially received ramipril
2.5mg tablets orally once daily, and were then titrated up to 5 mg/day and 10
mg/day at 2-week intervals. The maintenance dosage was 10 mg/day for I month.
For patients with stable heart failure, the starting dosage was 1.25 mg/day,
titrating up to the same maintenance dosage (10 mg/day). Adverse events were
closely followed up and recorded. 981 patients were eligible for the
intention-to-treat (ITT) analysis. Twenty-three patients dropped out at their own
request or because of protocol violation. 958 patients (97.7%) completed the
study per protocol. Main results: 880 of 958 (91.8%) patients reached and
remained at the 10 mg/day dosage level; 78 of 958 (8.1%) stayed at 5mg/day or
2.5 mg/day. 168 patients (17.5%) had at least one adverse event. Fifty-eight
patients (6.0%) stopped the treatment because of an adverse event; 110 (11.5%)
completed the study in spite of adverse events. Altogether, 185 instances of
adverse events were observed, mainly consisting of cough, dizziness,
hypotension, rash and serum creatinine elevation. Most adverse events were
possibly or probably related to ramipril. Three patients experienced serious
adverse events, including one death, but investigation failed to show any
evidence of a relationship to ramipril treatment. Conclusion: Ramipril was well
tolerated in Chinese patients with high-risk cardiovascular diseases. Patients
were able to tolerate the full effective dosage level of 10 mg/day
Keywords: adverse events/aged/AUCKLAND/cardiovascular/cardiovascular
diseases/cardiovascular events/cardiovascular risk/China/Chinese/coronary artery
disease/death/diabetes/disease/diseases/DRUG/heart/heart failure/high
risk/history/hypotension/NEW-ZEALAND/peripheral vascular
disease/population/ramipril/risk/risk factor/risk
factors/serum/stroke/treatment/vascular/vascular disease/women
Lechner, H., Schmidt, R., Reinhart, B., Grieshofer, P., Koch, M., Fazekas, F.,
Niederkorn, K., Horner, S., Irmler, A. and Freidl, W. (1994), The Austrian
Stroke Prevention Study - Serum Fibrinogen Predicts Carotid Atherosclerosis
and White-Matter Disease in Neurologically Asymptomatic Individuals. Clinical
Hemorheology, 14 (6), 841-846.
Abstract: To determine the influence of various hemorheologic factors on carotid
atherosclerois and white matter abnormalities in normals we studied 112
neurologically asymptomatic individuals aged 50 to 70 years by Doppler
sonography and MRI. Atherosclerotic vessel wall changes and white matter foci
were noted in 66 (58.9%) and 62 (55.4%) individuals, respectively. After
correcting for group differences in age and mean arterial blood pressure by the
use of an analysis of covariat test, subjects with carotid disease had higher
plasma fibrinogen concentrations than those with a normal vessel wall status
(327.1+/-72.7 mg/dl vs 296.3+/-67.1 g/dl, p=0.03) A similar association was
found in the presence of MRI white matter abnormalities (330.1+/-76.7 mg/dl vs
295.1+/-60.4 mg/dl, p=0.04). Partial correlations revealed positive relationship
between fibrinogen level and the severity of both carotid (r=0.21, p=0.03) and
white matter damage (r-0.24, p-0.009). Other theologic variables including whole
blood and plasma viscosity, hematocrit as well as red cell transit time were not
related to evidence of abnormal imaging findings. Our data demonstrate a clear
association between plasma fibrinogen with large and small vessel
atherosclerosis. As to whether elevations of serum fibrinogen are only the
epiphenomenon of atherosclerotic damage or represent a vascular risk factor per
se can only be determined by prospective longitudinal studies
Keywords: aged/atherosclerosis/blood pressure/carotid/CAROTID
ATHEROSCLEROSIS/ENGLAND/fibrinogen/MRI WHITE MATTER
DISEASE/MYOCARDIAL-INFARCTION/NORMAL
VOLUNTEERS/PLASMA
FIBRINOGEN/PLASMA-FIBRINOGEN/risk/RISK-FACTORS/severity/SIGN
AL HYPERINTENSITIES/vascular
Le Devehat, C., Khodabandehlou, T. and Mosnier, M. (2000), Effect of naftidrofuryl on
platelet aggregation in plasma from aspirin treated patients: an in vitro study.
Clinical Hemorheology and Microcirculation, 22 (3), 197-204.
Abstract: This study concerns an in vitro evaluation of the effect of naftidrofuryl on
platelet aggregation in plasma of 15 diabetic patients, who were being treated
with aspirin, and who were suffering from chronic arterial disease of the lower
limbs. Platelet aggregation, induced either spontaneously or by aggregating
agents, was measured in platelet-rich plasma (PRP). The results show that
serotonin (5-HT)- and adenosine 5'- diphosphate (ADP)-induced platelet
aggregation significantly decreased after addition of naftidrofuryl. Decreases
were achieved with naftidrofuryl at a low dose (0.06 mu M) and became more
marked with naftidrofuryl at higher concentrations. In contrast, naftidrofuryl did
not appear to modify routinely spontaneous platelet aggregation. These results
show an in vitro antiaggregating effect of naftidrofuryl on platelets of aspirinized
patients. However, the clinical interest of a such coadministration of
naftidrofuryl and aspirin in patients, has still to be confirmed in a double blind
randomized trial
Keywords:
adenosine/aggregation/aspirin/BINDING/evaluation/FIBRINOGEN/naftidrofury
l/NETHERLANDS/platelet aggregation/platelets/randomized/randomized
trial/SECONDARY PREVENTION/STROKE
Gey, K.F., Stahelin, H.B. and Eichholzer, M. (1993), Poor Plasma Status of Carotene
and Vitamin-C Is Associated with Higher Mortality from
Ischemic-Heart-Disease and Stroke - Basel Prospective-Study. Clinical
Investigator, 71 (1), 3-6.
Abstract: Previous cross-cultural comparisons of the mortality from ischemic heart
disease. in European communities with associated plasma levels of essential
antioxidants have revealed strong inverse correlations for vitamin E and
relatively weak correlations for other antioxidants. Similarly, in a case- control
study in Edinburgh low plasma levels of vitamin E were significantly associated
with an increased risk of previously undiagnosed angina pectoris whereas low
levels of other essential antioxidants lacked statistical significance. The current
Basel Prospective Study is particularly well suited to elucidate the impact of
antioxidants other than vitamin E. In this population (which was recently
evaluated regarding cancer mortality) the plasma levels of vitamins E and A are
exceptionally high and above the presumed threshold level of risk for ischemic
heart disease. The present 12-year follow-up of cardiovascular mortality in this
study reveals a significantly increased relative risk of ischemic heart disease and
stroke at initially low plasma levels of carotene (5.5 mmol/l who have
coronary heart disease, other forms of atherosclerotic vascular disease, or Who
are free of vascular disease but have a risk of major coronary events greater than
or equal to 1.5% per year. Choice of an appropriate treatment policy will require
(i) knowledge of the proportion of the population who Will need treatment for
secondary prevention, and (ii) targeting of treatment for primary prevention at a
specified absolute risk of coronary heart disease events, Selection of an
appropriate coronary heart disease risk for primary prevention requires
consideration of the number needed to be treated to prevent one coronary heart
disease event, the proportion of the population requiring treatment, the
cost-effectiveness of treatment and the total cost of treatment. 2. In a random
stratified sample of subjects aged 35-69 years from the Health Survey for
England 1993 we first examined the prevalence of subjects with cardiovascular
disease and serum cholesterol >5.5 mmol/l who may be candidates for secondary
prevention, In those free of cardiovascular disease we then examined the
prevalence of subjects with serum cholesterol >5.5 mmol/l who had three
different levels of coronary heart disease risk: coronary heart disease event rates
of 4.5% per year, 3.0% per year and 1.5% per year, These subjects may be
candidates for primary prevention depending on the treatment policy selected. 3.
For secondary prevention, 4.8% (95% confidence interval 4.3-5.3) of the U.K.
population aged 35-69 years might be candidates for 3-
hydroxy-3-methylglutaryl-coenzyme A reductase inhibitor treatment, comprising
2.4% (2.0 to 2.7) with a history of myocardial infarction, 1.9% (1.6 to 2.2) with
angina and 0.5% (0.3-0.7) with a history of stroke - all with total cholesterol >5.5
mmol/l. The prevalence of these diagnoses with total cholesterol >5.5 mmol/l
increased with age, from 1.5% at age 35-39 years to 16.2% at age 65-69 years in
men, and from 0.2% at age 35-39 years to 10.0% at age 65-69 years in women.
Approximately 13 people would need treatment for 5 years to prevent one
coronary event, at a cost of pound 36 000 per event prevented. The number
needing treatment for Secondary prevention would increase substantially if
treatment was extended to patients above 70 years of age or to those with serum
cholesterol less than or equal to 5.5 mmol/l. 4. Primary prevention aimed at a
coronary event risk of 4.5% per year would lead to treatment of only 0.3%
(0.2-0.4) of those aged 35-69 years, and those treated would be predominantly
older men with additional risk factors for coronary heart disease. The number
needed to be treated and cost per coronary event prevented would be similar to
those for secondary prevention. 5. Primary prevention targeted at subjects with a
coronary event rate of 3.0% per year would entail treating 3.4% (3.0- 3.9) of all
those aged 35-69 years. At this level of risk, 20 people would need treatment for
5 years to prevent one coronary event, at a cost of pound 55 000 per event
prevented. 6. Primary prevention aimed at a coronary event rate Of 1.5% per
year would entail (18.7-20.6) of all subjects aged 35-69 years, and about 80% of
men aged 60-69 years for primary or Secondary prevention. At this level of risk,
40 people would need treatment for 5 years to prevent one event, at a cost of
pound 111 000 per event saved. 7. Guidelines for 3-hydroxy-3-
methylglutaryl-coenzyme A reductase inhibitor treatment should take into
account the considerable workload and financial resources needed to implement
secondary prevention of coronary heart disease, the accepted first priority. For
primary prevention they need to consider the number needed to be treated to
prevent one event, the number of subjects needing treatment, the
cost-effectiveness of treatment and the total cost of treatment for the population.
Considering only the number needed to be treated we would propose treatment
for secondary prevention plus primary prevention at a coronary event rate of
3.0% per year. This would entail treating about 8.2% of the U.K. population aged
35-69 years, at an annual cost for drug therapy alone about pound 18 million per
million of the U.K. population
Keywords: angina/CARDIOVASCULAR
RISK/cholesterol/CLINICAL-TRIALS/coronary heart disease/coronary
risk/FOLLOW-UP/GUIDELINES/lipids/MANAGEMENT/MILD
HYPERTENSION/MORTALITY/myocardial infarction/primary
prevention/PRIMARY-CARE/REDUCTION/risk factors/secondary
prevention/SERUM-CHOLESTEROL
CONCENTRATION/stroke/treatment/trials
Giles, T.D. (1997), Hypertension and pathologic cardiovascular remodeling: A potential
therapeutic role for T-type calcium antagonists. Clinical Therapeutics, 19
27-38.
Abstract: Increased myocardial mass (cardiac hypertrophy, left ventricular hypertrophy
[LVH]) is an example of the widespread structural cardiovascular changes, often
referred to as remodeling, that may be present in association with sustained high
blood pressure. LVH strongly predicts myocardial infarction, stroke, and
cardiovascular death in patients with hypertension. As a result, prevention or
reversal of hypertensive LVH is widely accepted as a desirable therapeutic goal.
Although the molecular mechanisms responsible for remodeling are unclear, it is
believed that mechanical, endocrine, paracrine, and autocrine factors control the
remodeling process. Certain antihypertensive drugs may have particularly
favorable long-term effects in that they prevent and correct these structural
changes in addition to reducing arterial pressure. However, the mechanism by
which they achieve these effects is not well understood. It is theorized that
angiotensin-converting enzyme inhibitors do so by preventing the generation of
growth-promoting/mitogenic peptides and that beta-blockers interfere with the
growth-promoting effects of catecholamines. In experimental models, the
selective blockade of T-type calcium-ion (Ca2+) channels with mibefradil has
been demonstrated to have antiproliferative effects in both the renal and cardiac
vasculature; in patients with LVH, mibefradil reduced the left ventricular mass
index. Therefore, blockade of T-type Ca2+ channels may be useful in the
prevention or regression of cardiovascular remodeling. However, further
research will be required before the clinical implications of these findings can be
assessed
Keywords: angiotensin converting enzyme inhibitors/angiotensin-converting enzyme
inhibitors/ANGIOTENSIN-II/beta-blockers/blood pressure/CA2+
CHANNELS/calcium antagonists/cardiac
hypertrophy/CARDIAC-HYPERTROPHY/cardiovascular
remodeling/CELLS/CLINICAL IMPLICATIONS/control/drugs/high blood
pressure/hypertension/hypertrophy/infarction/left ventricular
hypertrophy/LEFT-VENTRICULAR HYPERTROPHY/mibefradil/myocardial
infarction/MYOCARDIAL-INFARCTION/NEW-YORK/prevention/RATS/SM
OOTH-MUSCLE/stroke/STRUCTURAL-CHANGES
Gonzalez, E.R. (1998), Antiplatelet therapy in atherosclerotic cardiovascular disease.
Clinical Therapeutics, 20 B18-B41.
Abstract: Arterial thrombosis frequently leads to death or disability from stroke,
peripheral arterial disease, or myocardial infarction (MI). Treating the underlying
causes of these diseases is the key to producing significant reduction in
morbidity, mortality, and health care costs. Prevention of arterial thrombosis is
the primary indication for antiplatelet therapy, and intense research has been
conducted in the past decade to develop novel antiplatelet agents with favorable
safety profiles. The results of the Antiplatelet Trialists' Collaboration, which
definitively established the rationale for antiplatelet agents in the prevention of
death, MI, and stroke, were an important stimulus for this research. This large
meta- analysis combined data from 145 randomized trials and showed that
antiplatelet therapy (most commonly aspirin, 75 to 325 mg/d) reduced the risk of
vascular events, including nonfatal MI, nonfatal stroke, and vascular death, by
25% in patients at high risk for occlusive vascular disease. The limitations and
adverse effects associated with traditional antiplatelet agents such as aspirin have
prompted the search for newer antiplatelet agents. Clinical trials such as the
Clopidogrel versus Aspirin in Patients at Risk of Ischemic Events (CAPRIE)
study, which was the first study to evaluate aspirin and clopidogrel in patients
with cerebrovascular, cardiac, and peripheral arterial disease, have established
the importance of newer antiplatelet effects in the management of patients with
diseases associated with atherosclerosis. The pathophysiology of atherosclerosis,
the mechanisms of action of antiplatelet agents, and the results of these and other
clinical trials that document the value of antiplatelet agents in atherosclerosis are
reviewed in this paper
Keywords: antiplatelet agents/antiplatelet therapy/ARTERIAL
THROMBOSIS/ASPIRIN/atherosclerosis/CAPRIE study/cardiovascular
disease/clinical trials/clopidogrel/costs/DIPYRIDAMOLE/diseases/health/health
care/health care costs/infarction/INTERMITTENT
CLAUDICATION/morbidity/mortality/myocardial
infarction/NEW-YORK/PHARMACOLOGY/PLATELET-FUNCTION/PREVE
NTION/randomized
trials/risk/safety/STROKE/SWEDISH-TICLOPIDINE-MULTICENTER/therapy
/thrombosis/TRIAL/trials/vascular/vascular disease
Shah, H. and Gondek, K. (2000), Aspirin plus extended-release dipyridamole or
clopidogrel compared with aspirin monotherapy for the prevention of recurrent
ischemic stroke: A cost-effectiveness analysis. Clinical Therapeutics, 22 (3),
362-370.
Abstract: Objective: The goal of this health economic analysis was to asses the
cost-effectiveness of a fixed combination of aspirin plus extended-release
dipyridamole (ASA/ER-DP) or clopidogrel compared with ASA monotherapy
for prevention of recurrent ischemic stroke. Background: The second European
Stroke Prevention Study (ASA/ESPS-2), a large scale clinical trial, demonstrated
that a new therapy-a fixed combination of ASA/ER- DP-is more effective than
ASA monotherapy for the prevention of recurrent ischemic stroke. Methods: We
used data from ESPS-2 to create a health economic model that estimates the
incremental cost and cost-effectiveness of ASA/ER-DP during the 2-year time
frame after an ischemic stroke. The modal was developed from a payor
perspective. The analysis used direct cost estimates for stroke from a Medicare
claims database analysis. Efficacy data were obtained From clinical trials to
determine the incremental cost per stroke averted for ASA/ER-DP or clopidogrel
versus ASA. Sensitivity analyses also were con ducted to test the reliability and
robustness of the model. Results: The results of the analysis demonstrated that
ASA/ER-DP was cost-effective compared with ASA monotherapy for the
secondary prevention of stroke, with a cost-effectiveness ratio of $28,472. The
model remained robust over a range of assumptions and cost estimates.
Clopidogrel, however, was not cost-effective compared with ASA (cost per
stroke averted, $161,316) in either the base-case analysis or any of the sensitivity
analyses. Conclusion: ASA/ER-DP thus Offers a cost-effective alternative to
ASA monotherapy for the prevention of recurrent ischemic stroke
Keywords: aspirin/cerebral infarction/cerebrovascular disease/clinical
trials/clopidogrel/cost/cost effectiveness/cost-effectiveness/cost-effectiveness
analysis/costs and cost
analysis/CT/dipyridamole/FIRST-EVER/health/ischemic/ischemic stroke/model
(economic)/NEW-YORK/prevention/RISK/secondary prevention/stroke/trials
Gross, C.P., Vogel, E.W., Dhond, A.J., Marple, C.B., Edwards, R.A., Hauch, O.,
Demers, E.A. and Ezekowitz, M. (2003), Factors influencing physicians'
reported use of anticoagulation therapy in nonvalvular atrial fibrillation: A
cross-sectional survey. Clinical Therapeutics, 25 (6), 1750-1764.
Abstract: Background: Some elderly patients with nonvalvular atrial fibrillation (NVAF)
who might benefit from warfarin therapy do not receive it. Objective: The goal
of this cross-sectional study was to identify physicians' attitudes and beliefs that
are associated with their reported use of warfarin in case scenarios. Methods: A
self-administered survey was mailed to a cross-section of general internists
randomly selected from a national pool of physicians in the American Medical
Association Masterfile. Fourteen clinical vignettes were used, incorporating
various comorbid conditions and risk factors for either major bleeding episode or
embolic cerebrovascular accident (CVA). The outcome measure was the number
of case vignettes for which warfarin was recommended. Results: A total of 142
completed surveys (33% of 426 eligible respondents; 109 men, 32 women [1
respondent did not provide gender]; mean [SD] age, 45 [10] years) were received.
The median number of case vignettes for which warfarin was recommended was
10 (interquartile range, 8-12). We found no relationship between the perceived
benefits of warfarin and its use in the case vignettes. However, the perceived risk
for warfarin-associated hemorrhage was strongly associated with reported
warfarin use (P 10-fold
higher than literature-based estimates, and physicians providing higher risk
estimates tended to use warfarin less often. On multivariate logistic regression,
physicians who recommended warfarin use in more vignettes were less likely to
report anticipated regret of committing an error of omission (ischemic CVA in an
untreated NVAF patient) (P 70% of patients aged greater
than or equal to65 years. When ACE-inhibitor treatment costs were included in
the calculation of treatment costs, the expense to avert I stroke was estimated at
$13,766 for years 1 to 2 after randomization and $12,281 for years 2 to 3. By
years 3 to 4, ramipril treatment resulted in 21 fewer strokes and produced an
estimated savings of $52,861. Conclusion: Ramipril 10 mg/d was a cost-effective
means of preventing first and recurrent ischemic strokes in the HOPE Study
patient population. Copyright (C) 2003 Excerpta Medica, Inc
Keywords: ACE
inhibitor/age/aged/ASPIRIN/benefits/cardiovascular/cost/costs/DIPYRIDAMOL
E/DISEASE/economics/evaluation/EVENTS/health/health care/health care
costs/heart/high risk/HOPE
Study/hospitalization/incidence/ischemic/NEW-YORK/outcomes/population/pre
vention/ramipril/relative risk/risk/SPONTANEOUSLY HYPERTENSIVE
RATS/stroke/therapy/treatment/US/USA/use
Michota, F.A. (2003), Venous thromboembolism prophylaxis in the medically ill patient.
Clinics in Chest Medicine, 24 (1), 93-+.
Abstract: General medical patients with clinical risk factors for venous
thromboembolism (VTE) have received either low-dose unfractionated heparin
(LDUH) twice or three times daily or once-daily low molecular weight heparin
(LMWH); however, current evidence suggests that the twice-daily LDUH may
not be efficacious in the acutely ill medical inpatient. LDUH three times daily
may be efficacious in most medical patients; however, it is associated with an
increased risk for bleeding. The preferred strategy for prevention in the
medically ill population at high to very high risk for VTE is LMWH. For patients
who have a high to very high risk for bleeding, nonpharmacologic strategies,
such as elastic stockings or intermittent pneumatic compression devices, are
recommended
Keywords: bleeding/DEEP-VEIN THROMBOSIS/DOUBLE-BLIND/heparin/high
risk/HOSPITAL PATIENTS/low molecular weight heparin/LOW-DOSE
HEPARIN/medical/medical patients/MOLECULAR-WEIGHT
HEPARIN/POPULATION/PREVENTION/prophylaxis/PULMONARY-EMBO
LISM/risk/risk factors/RISK-FACTORS/STROKE
PATIENTS/thromboembolism/unfractionated heparin/USA/venous
thromboembolism/weight
Leira, E.C. and Adams, H.P. (1999), Management of acute ischemic stroke. Clinics in
Geriatric Medicine, 15 (4), 701-+.
Abstract: Management of an acute ischemic stroke is multifaceted. Treatment in a
specialized stroke unit reduces mortality and morbidity. Components of care
include interventions to control or prevent medical or neurologic complications,
rehabilitation, and initiations of therapies to forestall recurrent stroke. The key to
modern treatment is the emergent administration of tissue plasminogen activator
(rtPA). Thrombocyte treatment improves outcome when it is given within 3
hours of onset of stroke to carefully selected patients
Keywords: acute/acute ischemic
stroke/administration/AMERICAN-HEART-ASSOCIATION/ASPIRIN/complic
ations/control/EMERGENCY/GUIDELINES/HEALTH-CARE-PROFESSIONA
LS/ischemic/ischemic stroke/morbidity/mortality/plasminogen
activator/PREVENTION/recurrent
stroke/rehabilitation/rtPA/STATEMENT/stroke/stroke unit/THROMBOLYTIC
THERAPY/TICLOPIDINE/treatment/TRIAL
Tong, D.C. and Albers, G.W. (1999), Antithrombotic management of atrial fibrillation
for stroke prevention in older people. Clinics in Geriatric Medicine, 15 (4),
645-+.
Abstract: Atrial fibrillation (AF) is a common cardiac condition in the elderly population.
The primary concern in individuals with AF is the risk of stroke. The
management of AF for stroke prevention requires an understanding of the
relative risks and benefits of antithrombotic therapy. Numerous randomized
clinical trials have improved tremendously our understanding of the relative
merits of anticoagulation and aspirin, and indicate that anticoagulation is the
appropriate treatment for the majority of individuals with AF. In patients who
have contraindications to anticoagulation, aspirin is recommended
Keywords: AF/anticoagulation/antithrombotic/antithrombotic therapy/ASPIRIN/atrial
fibrillation/clinical trials/COMBINED
WARFARIN/elderly/fibrillation/HEART-VALVE
REPLACEMENT/HEMORRHAGIC
COMPLICATIONS/MICROEMBOLI/ORAL
ANTICOAGULATION/PATIENT
SELF-MANAGEMENT/PREVALENCE/prevention/randomized/risk/RISK-
FACTORS/stroke/stroke prevention/THERAPY/treatment/trials
Laird, R.D. and Studenski, S.S. (1999), Management of hypertension for stroke
prevention in older people. Clinics in Geriatric Medicine, 15 (4), 663-+.
Abstract: It is no longer acceptable to attribute elevated blood pressure in elderly people
to the natural processes of aging and thereby withhold treatment. Sound evidence
demonstrates increased risk of cardiovascular disease with increasing levels of
blood pressure and decreased incidence of cardiovascular disease with blood
pressure control. Hypertension is known to be the most modifiable risk factor for
stroke. Given projected demographic shifts in the population, the number of
older Americans with hypertension and increased risk of morbidity and mortality
from stroke will grow during the first part of the next century. Health care
providers should familiarize themselves with the unique pathophysiology of
hypertension in elderly people, and integrate appropriate approaches to
comprehensive evaluation and management into practice
Keywords: aging/blood pressure/blood pressure
control/BLOOD-PRESSURE/cardiovascular/cardiovascular
disease/control/DISEASE/elderly/evaluation/HEALTH/hypertension/incidence/I
SOLATED SYSTOLIC
HYPERTENSION/MORBIDITY/MORTALITY/prevention/REDUCTION/RIS
K/risk factor/stroke/stroke prevention/THERAPY/treatment/TRIAL
Goldstein, L.B. (1999), Carotid endarterectomy for stroke prevention in older people.
Clinics in Geriatric Medicine, 15 (4), 685-+.
Abstract: The efficacy of endarterectomy for patients with symptomatic high-grade
stenosis of the extracranial carotid artery has been firmly established. Those with
asymptomatic carotid disease may also be candidates for the operation. A
thorough understanding of the benefits and risks of the operation for the
individual patient is necessary in determining whether to recommend the
operation
Keywords: 1001 ANGIOGRAMS/ARTERY
STENOSIS/asymptomatic/ASYMPTOMATIC PATIENTS/carotid/carotid
artery/CEREBRAL-ISCHEMIA/COMPLICATION
RATES/DECISION-ANALYSIS/endarterectomy/NATURAL-HISTORY/PREO
PERATIVE ASSESSMENT/prevention/RISK/stroke/stroke
prevention/TRANSIENT ISCHEMIC ATTACKS
Hylek, E.M. (2001), Oral anticoagulants - Pharmacologic issues for use in the elderly.
Clinics in Geriatric Medicine, 17 (1), 1-+.
Abstract: Clinical indications for oral anticoagulant therapy have greatly expanded,
particularly among the elderly. Optimal use of oral anticoagulants in the geriatric
population requires an understanding of the mechanism of action of warfarin and
the pharmacokinetic and pharmacodynamic differences in this age group. Many
factors affect the dose response of warfarin and the stability of anticoagulation
control, including age, medications, diet, and comorbid illness. Important
considerations in the initiation of warfarin dosing and the long-term management
of anticoagulation in the elderly are discussed
Keywords: age/anticoagulant/anticoagulant
therapy/anticoagulants/anticoagulation/ATRIAL-FIBRILLATION/BLEEDING
COMPLICATIONS/control/diet/dose
response/DRUG-METABOLISM/elderly/HUMAN-LIVER/management/mecha
nism of action/oral anticoagulant therapy/oral
anticoagulants/population/RACEMIC
WARFARIN/RISK-FACTORS/SEPARATED ENANTIOMORPHS/STROKE
PREVENTION/therapy/use/VITAMIN-K/warfarin/WARFARIN THERAPY
Savitz, S.I., Gupta, G., Singh, M. and Rosenbaum, D.M. (2001), Antithrombotic and
thrombolytic therapy for ischemic stroke. Clinics in Geriatric Medicine, 17 (1),
149-+.
Abstract: Antithrombotic and thrombolytic agents form the cornerstone of stroke
prevention and treatment. Large, randomized trials also have highlighted the
effectiveness and safety of early and continuous antiplatelet therapy in reducing
atherothrombotic stroke recurrence. Aspirin has become the antiplatelet
treatment standard against which several other antiplatelet agents (i.e.,
ticlopidine, clopidogrel, aspirin/dipyridamole) have been shown to be more
effective. The prevention of cardioembolic stroke, on the other hand, is best
accomplished with oral anticoagulation, barring any contraindications. The
thrombolytic agent rt-PA improves outcome in patients with ischemic stroke
treated within 3 hours of onset. The risk- benefit ratio is narrow due to an
increased risk for bleeding, but studies do not support a higher risk in the
geriatric population
Keywords: anticoagulation/antiplatelet/antiplatelet agents/antiplatelet
therapy/antiplatelet treatment/ASPIRIN
USE/bleeding/cardioembolic/cardioembolic
stroke/clopidogrel/DIPYRIDAMOLE/FIRST-EVER/INTRAVENOUS
HEPARIN/ischemic/ischemic stroke/oral
anticoagulation/outcome/PLASMINOGEN-ACTIVATOR/population/PREVEN
T STROKE/prevention/PROGRESSION/randomized/RANDOMIZED
CONTROLLED TRIAL/randomized
trials/recurrence/RISK/rtPA/safety/stroke/stroke prevention/stroke
recurrence/therapy/thrombolytic/thrombolytic agents/thrombolytic
therapy/TICLOPIDINE/treatment/trials
Singer, D.E. and Go, A.S. (2001), Antithrombotic therapy in atrial fibrillation. Clinics in
Geriatric Medicine, 17 (1), 131-+.
Abstract: Atrial fibrillation is a hallmark of aging, affecting 6% of individuals aged 65
years or older. Atrial fibrillation also increases the risk for ischemic stroke by
fivefold. A consistent series of randomized, controlled trials have demonstrated
that long-term anticoagulation largely reverses the risk for stroke posed by atrial
fibrillation. This article reviews these trials and other studies bearing on the
optimal intensity of anticoagulation for atrial fibrillation, the selection of patients
with atrial fibrillation for long-term anticoagulation, and the efficacy of aspirin
as an alternative stroke-preventive agent
Keywords: aged/aging/ANTICOAGULATION/ASPIRIN/atrial
fibrillation/CONTROLLED TRIAL/fibrillation/intensity/ischemic/ischemic
stroke/NATIONAL
PATTERNS/randomized/risk/RISK-FACTORS/SELF-MANAGEMENT/stroke/
STROKE
PREVENTION/therapy/THROMBOEMBOLISM/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/trials/WARFARIN USE
Beyth, R.J. (2001), Hemorrhagic complications of oral anticoagulant therapy. Clinics in
Geriatric Medicine, 17 (1), 49-+.
Abstract: Although the efficacy of anticoagulant therapy has been established for many
conditions that are prevalent among the elderly population, the decision to
initiate anticoagulant therapy in the elderly population is not straightforward
because elderly patients with multiple comorbidities and varying levels of
functional status are not routinely included in clinical trials of efficacy. The true
benefits of anticoagulant therapy will be realized when health care providers and
elderly patients can accurately assess the absolute risk versus the benefit
associated with anticoagulant therapy
Keywords: absolute risk/anticoagulant/anticoagulant therapy/BLEEDING
COMPLICATIONS/CASE-FATALITY RATES/CEREBRAL AMYLOID
ANGIOPATHY/clinical trials/complications/DEEP-VEIN
THROMBOSIS/elderly/ELDERLY PATIENTS/functional status/health/health
care/NONRHEUMATIC ATRIAL-FIBRILLATION/NONSTEROIDAL
ANTIINFLAMMATORY DRUGS/oral anticoagulant therapy/PEPTIC-ULCER
DISEASE/population/PULMONARY-EMBOLISM/risk/status/STROKE
PREVENTION/therapy/trials
Maurer, M.S. and Bloomfield, D.M. (2002), Atrial fibrillation and falls in the elderly.
Clinics in Geriatric Medicine, 18 (2), 323-+.
Abstract: Atrial fibrillation is an extremely rare cause of falls and syncope in the elderly.
The routine use of ambulatory ECG monitoring to search for atrial fibrillation in
elderly patients who fall is not recommended. Among elderly patients with atrial
fibrillation who fall, short pauses of less than 3 seconds are nonspecific and are
as common in patients who fall as they are in those who do not. Furthermore,
most pauses are not associated with symptoms. Although the decision to implant
a pacemaker for extremely long pauses is often straightforward, the decision to
implant a pacemaker in patients who fall and who have short pauses ideally
should be made after symptoms clearly have been associated with the
dysrhythmia. This type of symptom-rhythm correlation is extremely valuable and
often requires long-term ambulatory monitoring with external or internal
(implanted) event or loop recorders. Among the growing population of elderly
persons with chronic atrial fibrillation, oral anticoagulant therapy has been
shown to have significant benefit and is under-used, particularly in frail residents
of long-term care facilities
Keywords: 3 SECONDS/anticoagulant/anticoagulant therapy/atrial/atrial
fibrillation/chronic/chronic atrial fibrillation/DIZZINESS/DROP
ATTACKS/elderly/elderly patients/falls/fibrillation/monitoring/oral
anticoagulant therapy/pacemaker/population/PREVALENCE/RECURRENT
FALLS/RISK-FACTORS/SICK-SINUS SYNDROME/STROKE
PREVENTION/symptoms/SYNCOPE/therapy/use/VENTRICULAR PAUSES
Kohn, H.S. (1996), Prevention and treatment of elbow injuries in golf. Clinics in Sports
Medicine, 15 (1), 65-&.
Abstract: Golf interest is on the increase, resulting in a corresponding increase in
golf-related tendon injuries. Injuries are best avoided by a good strength and
flexibility program, proper warm-up exercises, and good stroke mechanics.
Treatment is directed toward restoring the integrity of the muscle/tendon unit at
the elbow and preventing recurrences
Keywords: SPORTS/stroke/treatment
Chimowitz, M.I. (1994), Warfarin Or Aspirin As Secondary Prevention of Ischemic
Stroke. Cns Drugs, 2 (5), 341-346.
Abstract: Until recently, the choice between aspirin (acetylsalicylic acid) or warfarin for
the secondary prevention of stroke was largely based on empirical evidence.
However, as stroke prevention trials have focused on patients with specific
vascular pathologies, clearcut guidelines for the use of aspirin or warfarin are
beginning to emerge. Warfarin is generally considered first-line therapy in
patients presenting with minor stroke or transient ischaemic attack related to
mitral stenosis, valvular atrial fibrillation, a mechanical prosthetic heart valve,
acute myocardial infarction or cardiomyopathy. Several recent multicentre
studies suggest that warfarin is also the most effective drug far stroke prevention
in patients with nonvalvular atrial fibrillation, unless the patient is less than 65
years old and has lone atrial fibrillation, is older than 75 years, or is at high risk
of haemorrhagic complications. Aspirin is a safe and effective alternative choice
in these settings. There are no prospective studies comparing aspirin with
warfarin in patients with symptomatic high grade stenosis of a major intracranial
artery. However, a recent retrospective multicentre study suggests that warfarin
may reduce the risk of stroke, myocardial infarction or vascular death by almost
50% compared with aspirin in these patients. Ongoing studies will help to clarify
whether warfarin or aspirin is superior for preventing stroke in patients with
intracranial penetrating artery disease, craniocervical arterial dissection,
antiphospholipid antibodies or right-to- left interatrial shunts, and in patients with
stroke of undetermined cause
Keywords: acute myocardial infarction/ANTICOAGULATION/aspirin/atrial
fibrillation/CHRONIC
ATRIAL-FIBRILLATION/complications/DRUG/DRUGS/fibrillation/heart/myo
cardial infarction/NEW-ZEALAND/prevention/prospective
studies/RANDOMIZED TRIAL/RISK/secondary prevention/stroke/stroke
prevention/TICLOPIDINE/transient/trials/vascular/Warfarin
Dafer, R., Tietjen, G.E. and Asherson, R.A. (1997), Drug treatment of stroke in patients
with antiphospholipid antibodies. Cns Drugs, 8 (3), 219-226.
Abstract: There are a number of therapeutic options for the prevention of stroke (primary
or recurrent) or other thrombotic events in antiphospholipid antibody-positive
individuals, although none is of proven benefit, Control of modifiable vascular
risk factors and avoidance of thrombogenic drugs should be recommended for all
persons with antiphospholipid antibodies, whether symptomatic or not, Therapies
to prevent thrombosis include antiplatelet agents and anticoagulants, with
warfarin the preferred choice in high risk patients who have recurrent events.
Immune-based therapies, including plasma exchange, immunoglobulins,
corticosteroids and immunosuppressants, are alternative treatment modalities for
patients who have recurrent events despite receiving high-dosage anticoagulants
Keywords: ANTICARDIOLIPIN
ANTIBODIES/ANTICOAGULANT/anticoagulants/antiplatelet
agents/AUTOIMMUNE THROMBOCYTOPENIA/CEREBRAL
INFARCTIONS/CEREBROVASCULAR-DISEASE/DOSE INTRAVENOUS
IMMUNOGLOBULIN/DRUG/DRUGS/FETAL
LOSS/INTERNAL/NEW-ZEALAND/PLASMA-EXCHANGE/prevention/risk/r
isk factors/stroke/SYSTEMIC
LUPUS-ERYTHEMATOSUS/thrombosis/treatment/vascular/VENOUS
THROMBOSIS/warfarin
Mousa, S.A. (2000), Potential role of platelet glycoprotein IIb/IIIa antagonists in
cerebrovascular disorders. Cns Drugs, 13 (3), 155-160.
Abstract: Studies have confirmed the benefit of established antiplatelet therapies [aspirin
(acetylsalicylic acid), clopidogrel, or a combination of aspirin and dipyridamole]
in cerebrovascular disorders such as stroke. Recent data indicate that
glycoprotein IIb/IIIa (GPIIb/IIIa) receptor antagonist antiplatelet agents (which
are currently marketed or are being investigated for their efficacy in
cardiovascular indications) may also be beneficial in patients who have had a
stroke. These agents may have potential value as monotherapy or as adjuncts to
thrombolytics or interventional procedures. However, GPIIb/IIIa antagonists
carry a risk of cerebral haemorrhage, which may be higher in patients with acute
stroke than in patients with transient ischaemic attack or partial occlusion
Keywords: acetylsalicylic acid/acute/ACUTE MYOCARDIAL-INFARCTION/acute
stroke/antiplatelet/antiplatelet
agents/aspirin/AUCKLAND/cardiovascular/cerebral/cerebrovascular/cerebrovas
cular
disorders/clopidogrel/DRUG/DRUGS/GPIIB-IIIA/haemorrhage/MONOCLONA
L-ANTIBODY/NEW-ZEALAND/NONRHEUMATIC
ATRIAL-FIBRILLATION/PLASMINOGEN-ACTIVATOR/PREVENTION/R
ANDOMIZED TRIAL/RECEPTOR
ANTAGONIST/risk/STROKE/thrombolytics/transient/transient ischaemic
attack/UNSTABLE ANGINA
Yasaka, M. and Yamaguchi, T. (2001), Secondary prevention of stroke in patients with
nonvalvular atrial fibrillation - Optimal intensity of anticoagulation. Cns Drugs,
15 (8), 623-631.
Abstract: Nonvalvular atrial fibrillation (NVAF) is frequently seen in elderly people and
has become a main cause of cardioembolic stroke. The efficacy of
anticoagulation for primary prevention of stroke or transient ischaemic attacks
(TIAs) in patients with NVAF has been established by prospective, randomised
and controlled trials. Warfarin decreased the frequency of all strokes by 68% and
the rate of the combined outcome of stroke, systemic embolism or death by 48%.
Anticoagulation with warfarin using international normalised ratios (INRs)
ranging from 2.0 to 3.0 is recommended for patients with NVAF, who have any
of the risk factors identified by the Atrial Fibrillation Investigators (AFI)
[previous stroke or TIA, history of hypertension, diabetes mellitus, advanced age
( greater than or equal to 65 years old), congestive heart failure and coronary
artery disease], the American College of Chest Physicians (ACCP) [increased
age (>75 years old), prior stroke, hypertension and heart failure], or the Stroke
Prevention in Atrial Fibrillation (SPAF) investigators [women >75 years old,
prior stroke, systolic blood pressure >160mm Hg, recent heart failure, and
fractional shortening 38.5 degrees C within the first 24 hrs of
admission) occurred in 29.9% of patients admitted to the PICU with traumatic
brain injury. Risk factors predicting early hyperthermia included Glasgow Coma
Scale score in the emergency department less than or equal to 8, pediatric trauma
score less than or equal to 8, cerebral edema or diffuse axonal injury on initial
head computed tomography scan, admission blood glucose >150 mg/dL (8.2
mmol/L), admission white cell count >14,300 cells/mm3 (14.3 x 10(9) cells/L),
and systolic hypotension. The presence of early hyperthermia significantly
increased the risk for Glasgow Coma Scale score 20 IU/hr). Between day 7 and 12, insulin requirements
decreased by 40% on stable caloric intake. Brief, clinically harmless
hypoglycemia occurred in 5.2% of intensive insulin-treated patients on median
day 6 (2-14) vs. 0.8% of conventionally treated patients on day 11 (2-10). The
outcome benefits of intensive insulin therapy were equally present regardless of
whether patients received enteral feeding. Multivariate logistic regression
analysis indicated that the lowered blood glucose level rather than the insulin
dose was related to reduced mortality (p 75 years. The answer is probably to use low intensity
anticoagulant therapy (international normalised ratio 2.0 to 3.0), which is safer
but no less effective than higher intensity regimens. Few data are available in the
literature on physicians' attitudes to anticoagulation in elderly patients with AF.
Although the results of randomised clinical trials in AF seem to suggest that
anticoagulants and/or aspirin (acetylsalicylic acid) are underused in the elderly,
over 90% of the patients initially screened were excluded from randomisation,
making the sample highly selected. Compared with randomised controlled trials,
some observational studies seem to indicate a higher likelihood of using
anticoagulation and have targeted the intensity of anticoagulation according to
age and clinical scenario
Keywords: acetylsalicylic
acid/AF/age/aged/AGING/anticoagulant/anticoagulants/anticoagulation/aspirin/a
trial fibrillation/ATTITUDES/clinical trials/complications/CORONARY
HEART-DISEASE/DRUG/elderly/EMBOLISM/FEATURES/fibrillation/FRAM
INGHAM/NEW-ZEALAND/observational
studies/POPULATION/PREVENTION/PROGNOSIS/risk/STROKE/therapy/tre
atment/trials/WARFARIN
Bhana, N. and McClellan, K.J. (2001), Indobufen - An updated review of its use in the
management of atherothrombosis. Drugs & Aging, 18 (5), 369-388.
Abstract: Indobufen inhibits platelet aggregation by reversibly inhibiting the platelet
cyclooxygenase enzyme thereby suppressing thromboxane synthesis, Clinical
trials have evaluated the efficacy of oral indobufen in the secondary prevention
of thromboembolic complications in patients with or without atrial fibrillation, in
the prevention of graft occlusion after coronary artery bypass graft (CABG)
surgery and in the treatment of intermittent claudication. In the secondary
prevention of thromboembolic events indobufen 200mg once or twice daily was
significantly more effective than no treatment although not as effective as
ticlopidine 250mg once or twice daily, during 1-year nonblind clinical trials.
Compared with placebo, indobufen 100mg twice daily significantly reduced the
risk of stroke in a small 28-month trial of patients at increased risk of systemic
embolism (50% had atrial fibrillation). Furthermore, in patients with
nonrheumatic atrial fibrillation and a recent cerebrovascular event enrolled in the
1-year Studio Italiano Fibrillazione Atriale (SIFA) trial. indobufen 100 or 200mg
twice daily was as effective as warfarin (titrated to produce an international
normalised ratio of 2.0 to 3.5) in the secondary prevention of thromboembolic
events; the incidences of the composite end-point of major vascular events (10.6
vs 9.0%) and recurrent stroke (5 vs 4%) were similar between treatments. In 2
large 12-month trials, the Studio Indobufene nel Bypass Aortocoronarico
(SINBA) and the UK study, indobufen 200mg twice daily was as effective as
aspirin (acetylsalicylic acid) 300 or 325mg plus dipyridamole 75mg 3 times daily
in the prevention of early and late occlusion of saphenous grafts in patients after
CABG surgery. Indobufen 200mg twice daily for 6 months significantly
improved walking capacity compared with placebo, and caused a more
pronounced improvement in both pain-free and total walking distance than either
pentoxifylline 300mg or aspirin 500mg twice daily in separate 6- and 12-month
studies of patients with intermittent claudication. Oral indobufen up to 200mg
twice daily was generally well tolerated in > 5000 patients with atherosclerotic
disease. Adverse events (predominantly gastrointestinal), reported by 3.9% of
patients, rarely required withdrawal from treatment. in the SINBA and UK
studies, fewer adverse events and less gastrointestinal bleeding were seen with
indobufen than with aspirin plus dipyridamole treatment, while in the SIFA trial,
noncerebral bleeding events occurred significantly less frequently in indobufen
than warfarin recipients (0.6 vs 5.1 %) and major bleeding events occurred only
in the warfarin group. Conclusion: Indobufen is as effective as warfarin in the
prophylaxis of thromhoembolic events in at risk patients with nonrheumatic
atrial fibrillation, as aspirin plus dipyridamole in the prevention of CABG
occlusion and may be more effective than aspirin or pentoxifylline in improving
walking capacity in patients with intermittent claudication. The improved
tolerability profile of indobufen (favourable gastric tolerance and reduced
haemorrhagic complications) compared with aspirin 300 to 325mg 3 times daily
or warfarin, in addition to a similar antiplatelet effect, suggests indobufen can be
considered a drug with a definite role in the management of atherothrombotic
events. In particular, indobufen may be an effective alternative for at risk patients
with nonrheumatic atrial fibrillation in whom anticoagulant therapy is
contraindicated or who are at higher risk of bleeding
Keywords: acetylsalicylic acid/adverse
events/aggregation/AGING/anticoagulant/anticoagulant
therapy/antiplatelet/aspirin/atherothrombosis/atrial
fibrillation/ATRIAL-FIBRILLATION/AUCKLAND/bleeding/BLEEDING-
TIME/CABG/cerebrovascular/cerebrovascular event/clinical
trials/complications/dipyridamole/disease/DRUG/embolism/fibrillation/HEART-
DISEASE/incidences/indobufen/INTERMITTENT
CLAUDICATION/ISCHEMIC
ATTACK/management/NEW-ZEALAND/nonrheumatic/platelet/platelet
aggregation/PLATELET-AGGREGATION/prevention/prophylaxis/recurrent
stroke/review/risk/secondary/SECONDARY
PREVENTION/stroke/surgery/therapy/thromboembolic
complications/thromboembolic events/THROMBOXANE-B2
PRODUCTION/ticlopidine/treatment/trial/trials/use/vascular/VASCULAR-DIS
EASE/VENOUS DISEASE/warfarin
Mungall, M.M.B., Gaw, A. and Shepherd, J. (2003), Statin therapy in the elderly - Does
it make good clinical and economic sense? Drugs & Aging, 20 (4), 263-275.
Abstract: HMG-CoA reductase inhibitors (statins) have been established as the dominant
treatment for coronary heart disease (CHD). This dominance is based on an
impressive body of clinical trial evidence showing significant benefits in primary
prevention of cardiovascular events in individuals at risk for CHD and in
secondary prevention of such events in patients with CHD and high or normal
plasma cholesterol levels. There is, however, significant room for improvement
in the treatment of CHD with respect both to drug efficacy and to the disparity
between evidence-based medicine and actual clinical practice particularly in
relation to treatment strategies for the elderly. Current statins fall short of
requirements for 'ideal' lipid-lowering treatment in several respects; 'super' statins
and other agents currently in development may satisfy more of these
requirements. Moreover, available therapies are not applied optimally, because
of physician nonacceptance and/or patient noncompliance; thus, the majority of
patients with CHD or its risk factors still have cholesterol levels that exceed
guideline targets. There is also evidence that older patients with CHD, or at high
risk of CHD, are undertreated-possibly because of concerns regarding the
increased likelihood of adverse events or drug interactions or doubts regarding
the cost effectiveness of statin therapy in this population. This group is of
particular clinical relevance, since it is showing a proportionate rapid expansion
in most national populations. To address their potential healthcare needs, the
ongoing Pravastatin in the Elderly at Risk (PROSPER) study is assessing the
effects of pravastatin in elderly patients (5804 men and women aged 70-82 years)
who either have preexisting vascular disease or are at significant risk for
developing it, with the central hypothesis that statin therapy (pravastatin 40
mg/day) will diminish the risk of subsequent major vascular events compared
with placebo. After a 3.2-year treatment period, a primary assessment will be
made of the influence of statin treatment on major cardiovascular events (a
combination of CHD death, nonfatal myocardial infarction, and fatal or nonfatal
stroke). Optimal deployment of the currently available agents and of newer
agents (no matter how well they satisfy requirements for ideal treatment)
ultimately depends on the establishment of an evidence base and may require
far-reaching educational programmes that change the way risk factor
management is viewed by caregivers and patients alike
Keywords: adverse events/aged/AGING/ALL-CAUSE
MORTALITY/AUCKLAND/benefits/C-REACTIVE
PROTEIN/cardiovascular/cardiovascular events/CARDIOVASCULAR-
DISEASE/CHD/cholesterol/clinical practice/clinical trial/COENZYME-A
REDUCTASE/combination/coronary heart disease/CORONARY
HEART-DISEASE/cost/cost
effectiveness/cost-effectiveness/death/DENSITY-LIPOPROTEIN
CHOLESTEROL/development/disease/DRUG/drug interactions/elderly/elderly
patients/guideline/heart/heart disease/high risk/HMG-CoA reductase
inhibitors/infarction/lipid
lowering/lipid-lowering/management/men/MIDDLE-AGED
MEN/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/NEW-ZEALAND/population/pravas
tatin/prevention/primary/primary
prevention/PRIMARY-PREVENTION/risk/risk factor/risk
factors/SCANDINAVIAN- SIMVASTATIN-SURVIVAL/secondary/secondary
prevention/statin/statin
therapy/statins/stroke/therapy/treatment/trial/vascular/vascular disease/vascular
events/women
Ratnasabapathy, Y., Lawes, C.M.M. and Anderson, C.S. (2003), The perindopril
protection against recurrent stroke study (PROGRESS) - Clinical implications
for older patients with cerebrovascular disease. Drugs & Aging, 20 (4), 241-251.
Abstract: Blood pressure levels are strongly predictive of the risks of first-ever and
recurrent stroke. The benefits of blood pressure-lowering therapy for the
prevention of fatal and non- fatal stroke in middle-aged individuals are well
established. However, until recently, there has been uncertainty about the
consistency of such benefits across different patient groups and in particular, for
older people and in those with a history of stroke. This paper discusses the
evidence surrounding the effectiveness of blood pressure-lowering therapy,
specifically in older patients with a history of stroke, with particular attention
paid to the results from the Perindopril Protection Against Recurrent Stroke
Study (PROGRESS). PROGRESS was a randomised, double-blind,
placebo-controlled trial of 6105 individuals with a history of cerebrovascular
disease recruited from 172 hospital outpatient clinics in ten countries.
Participants (mean age 64 years; range 26-91 years) were randomly assigned to
receive active treatment with an ACE inhibitor-based blood pressure-lowering
regimen (perindopril) with or without addition of the diuretic indapamide, or
matched placebo. At the end of follow up (mean of 4 years), active treatment
reduced the incidence of total stroke by 28% (95% CI 17-38%) and the rate of
major vascular events by 26% (95% CI 16-34%). Importantly, benefits of
treatment were consistent across key patient subgroups, including those with and
without hypertension, patients who were Asian and non-Asian, and for both
ischaemic and haemorrhagic strokes subtypes. Current evidence is now strong
for clinicians to consider blood pressure-lowering therapy as pivotal in the
prevention of stroke, especially in patients with a known history of
cerebrovascular disease (and vascular disease, in general), irrespective of blood
pressure levels, as soon as patients are clinically stable after an acute stroke or
other vascular event. Additional age-specific analyses of the PROGRESS data,
together with those from other completed trials, will provide more reliable
information about the size of the benefits of blood pressure-lowering therapy,
specifically for different age groups, and particularly in the oldest old (those aged
>80 years). In the meantime though, an ACE inhibitor plus diuretic treatment
regimen that maximises the degree of blood pressure reduction has a good safety
profile and is an effective treatment that should be considered in all patients with
stroke, including the elderly
Keywords: ACE inhibitor/acute/acute stroke/age/aged/AGING/ANTIHYPERTENSIVE
TREATMENT/AUCKLAND/benefits/blood pressure/blood pressure
lowering/BLOOD-PRESSURE/CALCIUM-ANTAGONISTS/CARDIOVASCU
LAR MORTALITY/cerebrovascular/cerebrovascular disease/CORONARY
HEART-DISEASE/disease/DOUBLE-BLIND/DRUG/elderly/history/hospital/hy
pertension/incidence/indapamide/ischaemic/ISOLATED SYSTOLIC
HYPERTENSION/J-CURVE/MYOCARDIAL-INFARCTION/NEW-ZEALAN
D/old/older
people/perindopril/prevention/PROGRESS/protection/RANDOMIZED
CONTROLLED TRIALS/recurrent
stroke/results/risks/safety/stroke/therapy/treatment/trial/trials/vascular/vascular
disease/vascular event/vascular events
Hu, F.B. (2001), The role of n-3 polyunsaturated fatty acids in the prevention and
treatment of cardiovascular disease. Drugs of Today, 37 (1), 49-56.
Abstract: Growing evidence has suggested an important role of n-3 polyunsaturated fatty
acids in reducing risk of cardiovascular disease in the general population and
patients with preexisting heart disease. In particular, several long-term
epidemiologic studies have found an inverse association between fish
consumption and risk of coronary heart disease or stroke. Two secondary
prevention trials have found that increasing fish consumption or fish oil
supplementation significantly reduced coronary death among patients with
existing myocardial infarction. In addition, epidemiologic and clinical studies
have suggested that a-linolenic acid (ALA), a short-chain n3-3 fatty acid from
plant sources, may have similar cardiac benefits as long-chain n-3 fatty acids
from fish. Potential mechanisms through which n-3 polyunsaturated fatty acids
protect against CVD include their antiarrhythmic and antithrombotic effects, and
improving insulin sensitivity and endothelial function. (C) 2001 Prous Science.
All rights reserved
Keywords: ALPHA-LINOLENIC
ACID/antithrombotic/cardiac/CARDIAC-ARRHYTHMIAS/cardiovascular/cardi
ovascular disease/coronary heart disease/CORONARY
HEART-DISEASE/death/DIETARY-FAT/disease/DRUG/DRUGS/EICOSAPE
NTAENOIC ACID/endothelial function/fatty acid/FISH CONSUMPTION/fish
oil/heart/heart disease/infarction/mechanisms/MEN/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/OIL/population/prevention/RISK/sec
ondary/secondary prevention/SPAIN/stroke/treatment/trials
Bagchi, D., Das, D.K., Tosaki, A., Bagchi, M. and Kothari, S.C. (2001), Benefits of
resveratrol in women's health. Drugs Under Experimental and Clinical Research,
27 (5-6), 233-248.
Abstract: Resveratrol and trans-resveratrol are powerful phytoestrogens, present in the
skins of grapes and other plant foods and wine, which demonstrate a broad
spectrum of pharmacological and therapeutic health benefits. Phytoestrogens are
naturally occurring plant-derived nonsteroidal compounds that are functionally
and structurally similar to steroidal estrogens, such as estradiol, produced by the
body, Various studies, reviewed herein, have demonstrated the health benefits of
phytoestrogens in addressing climacteric syndrome including vasomotor
symptoms and postmenopausal health risks, as well as their anticarcinogenic,
neuroprotective and cardioprotective activities and prostate health and bone
formation promoting properties. Conventional HRT drugs have been
demonstrated to cause serious adverse effects including stroke and gallbladder
disease, as well as endometrial, uterine and breast cancers. Recent research
demonstrates that trans-resveratrol binds to human estrogen receptors and
increases estrogenic activity in the body. We investigated the effects of protykin,
a standardized extract of trans-resveratrol from Polygonum cuspidatum, on
cardioprotective function, the incidence of reperfusion-induced arrhythmias and
free radical production in isolated ischemic/reperfused rat hearts. The rats were
orally treated with two different daily doses of protykin for 3 weeks. Coronary
effluents were measured for oxygen free radical production by electron spin
resonance (ESR) spectroscopy in treated and drug-free control groups. In rats
treated with 50 and 100 mg/kg of protykin, the incidence of reperfusion-induced
ventricular fibrillation was reduced from its control value of 83% to 75% (p
2 days of AF and
embolizes by being dislodged from increases in. shear forces. This widely
accepted concept further holds that newly formed atrial thrombus, in the setting
of AF, organizes over a span of 14 days. The results of studies based on,
observations from transesophageal echocardiography examinations have
provided provocative insight into the temporal sequence of atrial thrombus
formation, embolization, and resolution in AF or atrial flutter and have expanded
the traditional concept of thromboembolism in these atrial dysrhythmias. Namely,
left atrial thrombus may form before the onset of AF in the face of sinus rhythm.
Conversion to sinus rhythm may increase the thrombogenic milieu of the Left
atrium. Importantly, atrial thrombus may form in the acute phase of AF. Last,
thrombi may require > 14 days to become immobile or to resolve. Findings
similar to those of acute AF have been reported in patients with atrial flutter and
coexisting cardiac pathology. On the basis of these emerging insights fostered by
the use of transesophageal echocardiography, it appears appropriate to consider
anticoagulation in patients presenting with acute AF or atrial flutter with
coexisting cardiac pathology predisposing to left atrial thrombus
Keywords: acute/AF/anticoagulation/ANTITHROMBOTIC THERAPY/APPENDAGE
FUNCTION/arrhythmia/arrhythmias/atrial arrhythmias/atrial fibrillation/atrial
flutter/cardiac/DIRECT-CURRENT
CARDIOVERSION/echocardiography/elderly/ELECTRICAL
CARDIOVERSION/EMBOLIC
COMPLICATIONS/embolism/fibrillation/FLOW
VELOCITY/formation/MITRAL-VALVE DISEASE/pathology/risk/sinus
rhythm/SPONTANEOUS ECHO
CONTRAST/stroke/thromboembolism/thrombus/THROMBUS
FORMATION/transesophageal echocardiography/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/use
Fagan, S.M. and Chan, K.L. (2000), Transesophageal echocardiography risk factors for
stroke in nonvalvular atrial fibrillation. Echocardiography-A Journal of
Cardiovascular Ultrasound and Allied Techniques, 17 (4), 365-372.
Abstract: Atrial fibrillation is a common. arrhythmia, particularly in the older age groups.
It confers an. increased risk of thromboembolism to these patients, and multiple
clinical risk factors have been identified to be useful in predicting the risks of
thromboembolic events. Recent studies ha ve evaluated the role of
transesophageal echocardiography (TEE) in the evaluation, of patients with atrial
fibrillation. The purpose of this review is to evaluate the significance of
transesophageal echocardiographic findings in the prediction of thromboembolic
events, particularly stroke, in, patients with nonvalvular atrial fibrillation, with an
emphasis on recently reported prospective studies. Aortic plaque and Left atrial
appendage abnormalities are identified as independent predictors of
thromboembolic events. Although they are associated with clinical events, they
also have independent incremental prognostic values. Other transesophageal
echocardiographic findings, such as patent foramen ovale and atrial septal
aneurysm, have not been found to be predictors of thromboembolic events in this
patient group. Thus, TEE is a useful tool in stratifying patients with nonvalvular
atrial fibrillation into different risk groups in terms of thromboembolic events,
and it will Likely play an important role in future studies to assess new treatment
strategies in high-risk patients with atrial fibrillation
Keywords: age/aneurysm/ANTICOAGULATION/AORTIC-ARCH/arrhythmia/atrial
appendage/atrial fibrillation/atrial septal
aneurysm/echocardiography/evaluation/fibrillation/foramen ovale/high
risk/MITRAL-VALVE DISEASE/nonvalvular atrial fibrillation/patent/PATENT
FORAMEN
OVALE/plaque/predictors/PREVALENCE/PREVENTION/prospective
studies/review/risk/risk factors/risk factors for stroke/SEPTAL
ANEURYSM/SPONTANEOUS ECHO
CONTRAST/stroke/THROMBOEMBOLIC
COMPLICATIONS/thromboembolic
events/thromboembolism/THROMBUS/transesophageal
echocardiography/treatment
Asinger, R.W. (2000), Role of transthoracic echocardiography in atrial fibrillation.
Echocardiography-A Journal of Cardiovascular Ultrasound and Allied
Techniques, 17 (4), 357-364.
Abstract: Atrial fibrillation is a major clinical problem that is predicted to be
encountered more frequently as the population ages. The clinical management of
atrial fibrillation has become increasingly complex as new therapies and
strategies have become available for ventricular rate control, conversion to sinus
rhythm, maintenance of sinus rhythm, and prevention, of thromboembolism.
Clinical and transthoracic echocardiographic features are important in,
determining etiology and directing therapy for atrial fibrillation. Left atrial size,
left ventricular wall thickness, and left ventricular function have independent
predictive value for determining the risk of developing atrial fibrillation. Left
atrial size may have predictive value in, determining the success of cardioversion
and maintaining sinus rhythm in selected clinical settings but has Less value in
the most frequently encountered group, patients with nonvalvular atrial
fibrillation, in whom the duration of atrial fibrillation is the most important
feature. When selecting pharmacological agents to control ventricular rate,
convert to sinus rhythm, and maintain normal sinus rhythm, transthoracic
echocardiography (TTE) allows noninvasive evaluation of left ventricular
function and hence guides management. The combination. of clinical and
transthoracic echocardiographic features also allows risk stratification for
thromboembolism and hemorrhagic complications in atrial fibrillation. High-risk
clinical features for thromboembolism supported by epidemiological
observations, results of randomized clinical trials, and meta-analyses include
rheumatic valvular heart disease, prior thromboembolism, congestive heart
failure, hypertension, older (> 75 years old) women, and diabetes. Small series of
cases also suggest those with hyperthyroidism and hypertrophic cardiomyopathy
are at high risk. TTE plays a unique role in. confirming or discovering high-risk
features such as rheumatic valvular disease, hypertrophic cardiomyopathy, and
decreased left ventricular function. Validation. of the risk stratification scheme
used in the Stroke Prevention in Atrial Fibrillation-IV trial is welcomed by
clinicians who are faced daily with balancing the benefit and risks of
anticoagulation to prevent thromboembolism in patients with atrial fibrillation
Keywords: anticoagulation/atrial fibrillation/cardiomyopathy/cardioversion/clinical
trials/complications/congestive heart
failure/control/diabetes/disease/echocardiography/ELECTRICAL
CARDIOVERSION/etiology/evaluation/fibrillation/FOLLOW-UP/FRAMINGH
AM/heart/heart disease/heart failure/high risk/hypertension/left atrial
function/left atrial size/MECHANICAL
FUNCTION/NATURAL-HISTORY/nonvalvular atrial
fibrillation/population/PREDICTORS/prevention/randomized/risk/risk
stratification/RISK-FACTORS/sinus rhythm/SIZE/SYSTEMIC
EMBOLIZATION/therapy/THROMBOEMBOLIC
STROKE/thromboembolism/transthoracic echocardiography/trials/women
Fava, E., Bortolani, E., Ducati, A. and Schieppati, M. (1992), Role of Sep in Identifying
Patients Requiring Temporary Shunt During Carotid Endarterectomy.
Electroencephalography and Clinical Neurophysiology, 84 (5), 426-432.
Abstract: EEGs and short-latency somatosensory evoked potentials (SEPs) to median
nerve stimulation were recorded during 151 carotid endarterectomies, performed
under general anaesthesia. Carotid occlusion did not affect either EEG or SEP in
120 cases (group A). In 31 cases the EEG showed "ischaemic" abnormalities
(group B). A temporary shunt was inserted only in 16 B patients showing also
severely depressed cortical SEPs within 2 min after carotid occlusion (group B
shunt). In 15 B patients in whom SEPs were less affected, the operation was
completed without shunt (group B no shunt). One intraoperative stroke occurred
in group A and two in group B shunt. No neurological complications occurred in
group B no shunt. Overall stroke rate was 2%. On retrospective analysis, latency
and amplitude of N20 and P25 waves proved to be uninfluenced by carotid
occlusion in group A, but were significantly affected in group B shunt. P25
amplitude alone was reduced in B no shunt. An arbitrary index (need-for-shunt
index, NSI) was made in order to rate changes of P25 latency and amplitude. Its
mean values were significantly different in the 3 groups. A threshold value is
suggested above which shunt is required, as a useful adjunct to EEG, in order to
balance prevention of brain ischaemia against the risks of shunt
Keywords: ARTERY OCCLUSION/CAROTID ENDARTERECTOMY/CEREBRAL
BLOOD-FLOW/COMPLICATIONS/EEG/INTRAOPERATIVE
MONITORING/ISCHEMIA/RESPONSES/SELECTIVE
SHUNT/SOMATOSENSORY EVOKED POTENTIALS/SOMATOSENSORY
EVOKED-POTENTIALS/STUMP PRESSURE
Sites, C.K. (2000), Hormones, women, and cardiovascular disease: Primary vs.
secondary prevention after menopause. Endocrinologist, 10 (2), 113-117.
Abstract: Hormone replacement therapy (HRT) may provide greater benefits or risks to
women after menopause depending on the patient's clinical history. This review
focuses on the effects of HRT on primary vs. secondary prevention of
cardiovascular disease. For women without known cardiovascular disease, HRT
may reduce risk through improvement in lipids, cardiac contractility, and body
composition. The improvement in vasodilatation with estrogen may be diluted by
the addition of a progestin, The effects of HRT on coagulation and vascular
inflammation are more difficult to interpret. For women with known disease,
HRT may reduce subclinical atherosclerosis and increase long-term survival after
coronary artery bypass grafting, However, it may not prevent subsequent cardiac
events and may increase the short- term risk of thrombosis for these patients.
Understanding the risks and benefits of HRT relative to cardiovascular history
should allow physicians to provide useful information to patients
Keywords: ANGIOPLASTY/atherosclerosis/bypass
grafting/cardiac/cardiovascular/cardiovascular
disease/coagulation/COHORT/contractility/disease/estrogen/ESTROGEN
REPLACEMENT THERAPY/history/HRT/inflammation/INSULIN
SENSITIVITY/lipids/menopause/POSTMENOPAUSAL
WOMEN/prevention/primary/PROGESTIN/review/RISK/secondary
prevention/STROKE/therapy/THICKNESS/thrombosis/USERS/vascular/women
Rifkind, B.M. (1998), Clinical trials of reducing low-density lipoprotein concentrations.
Endocrinology and Metabolism Clinics of North America, 27 (3), 585-+.
Abstract: Much diverse evidence suggests that the plasma levels of low- density
lipoprotein (LDL) cholesterol play a causal role in the pathogenesis of
atherosclerotic coronary heart disease. Until recently, clinical trials of LDL
lowering, while showing significant reductions in coronary heart disease (CHD)
rates, were not entirely convincing and left some questions of long- term toxicity
unresolved. The results of a series of new trials using members of the powerful
statin class of drugs are now being reported. Whether they are primary or
secondary prevention studies, they have been uniformly successful in reducing
mortality and morbidity from CHD and even total mortality, and have decreased
the need for revascularization procedures. Their effectiveness is apparent in
many different subgroups such as women, diabetics, hypertensives, and in stroke
prevention. Statin drugs also have proven to be remarkably safe over the duration
of the studies. Angiographic studies show an impact on coronary or carotid
lesions
Keywords: ATHEROSCLEROSIS/carotid/cholesterol/CHOLESTEROL
LEVELS/clinical trials/coronary heart disease/CORONARY
HEART-DISEASE/drugs/heart/LDL/morbidity/MORTALITY/MYOCARDIAL-
INFARCTION/POPULATION/PRAVASTATIN/PREVENTION/PROGRESSI
ON/secondary prevention/SERUM-CHOLESTEROL/stroke/stroke
prevention/toxicity/trials/women
Kuller, L.H. (2000), Epidemiology and prevention of stroke, now and in the future.
Epidemiologic Reviews, 22 (1), 14-17
Keywords: ASSOCIATION/CARDIOVASCULAR-DISEASE/FACTOR
INTERVENTION TRIAL/HYPERTENSION/ISCHEMIC
STROKE/MORTALITY/MYOCARDIAL-INFARCTION/OLDER
ADULTS/prevention/RISK-FACTORS/stroke/WHITE-MATTER LESIONS
Rafflenbeul, W. (2000), Fish for a healthy heart. Ernahrungs-Umschau, 47 (11), 432-+.
Abstract: omega -3 fatty acids have been shown to possess hypolipemic,
antihypertensive, antiinflammatory, antithrombotic and antiarrhythmic properties
making them of interest in the prevention of coronary artery disease and stroke,
mild hypertension, type 2 diabetes, autoimmune nephropathy, rheumatoid
arthritis, Crohn's disease or chronic obstructive pulmonary disease. For
prevention of coronary heart disease complications a stabilization of membrane
eletrophysiologic function in a manner that makes it less vulnerable to fatal
arrhythmias is most important. Besides all the attention to common risk factors in
trying to keep the heart healthy, a Little fish two times per week is a prudent
advice, particularly if it substitutes other sources of protein, like fatty meats, and
is served with a green salad and legumes
Keywords:
antithrombotic/arrhythmias/CHD/complications/CONSUMPTION/CONTROLL
ED TRIAL/coronary artery disease/CORONARY
ATHEROSCLEROSIS/coronary heart
disease/diabetes/DIETARY-INTAKE/DISEASE/fish/Germany/heart/heart
disease/hypertension/MORTALITY/MYOCARDIAL-INFARCTION/N-3
FATTY-ACIDS/omega-3 fatty acids/PREVENT
RESTENOSIS/prevention/pulmonary/RISK/risk factors/stroke/type 2 diabetes
Dundas, R., Morgan, M., Redfern, J., Lemic-Stojcevic, N. and Wolfe, C. (2001), Ethnic
differences in behavioural risk factors for stroke: Implications for health
promotion. Ethnicity & Health, 6 (2), 95-103.
Abstract: Objectives. Ethnic minority groups are at a higher risk of stroke and heart
disease. However, designing effective prevention strategies requires responding
to the needs of different ethnic groups. The aims of this study were to estimate
the prevalence of four behavioural risk factors (smoking, drinking, exercise and
weight) for stroke among Black Caribbeans, Black Africans and Whites, and also
to examined reported willingness to change these behaviours. Design. A random
sample of 311 Black Caribbean, 300 White, and 105 Black Africans aged 45-74
registered with 16 practices in south London were surveyed in 1995. Information
was obtained on smoking, drinking and exercise patterns, body mass index and
perceptions of being at risk of stroke, and willingness to change risk behaviour.
Results. White respondents (31% age and sex standardised prevalence) were
more likely to smoke than Black Caribbeans (23%) and Black Africans (10%) (p
27) than Black Caribbeans (60%) and Black Africans (68%) (p = 0.001).
A high proportion of smokers wished to give up (89% Black African: 83% Black
Caribbean; 74% White). A higher proportion of Black Caribbeans (35%)
reported a willingness to reduce their alcohol intake compared to only 15% of
Whites (p = 0.040). There was a difference between groups in attitudes to weight
reduction with 69% Black Caribbean women expressing a desire to be thinner
compared to 86% Whites and 82% Black Africans (p = 0.051). Conclusion.
Strategies to reduce behavioural risk factors for heart attack and stroke need to
emphasise different risk factors among ethnic groups, especially in relation to
alcohol use in the White population and weight in the Black Caribbean
population. Influencing the change of these behaviours requires working in
partnership with local community groups
Keywords: age/aged/alcohol/attitudes/body mass
index/community/disease/England/ethnic groups/ethnicity/exercise/health/health
promotion/heart/heart disease/population/prevalence/prevention/risk/risk
factors/risk factors for stroke/sex/smoking/stroke/use/weight/women
Carlsson, J., Miketic, S., Dees, G., Haun, S., Cuneo, A. and Tebbe, U. (2000), Stroke
prevention practices in patients with atrial fibrillation and pacemaker therapy -
Evidence for under-use of anticoagulation. Europace, 2 (2), 115-118.
Abstract: This study presents a survey of pacemaker patients followed in a pacemaker
clinic. Three hundred and twenty-six patients of mean age 77.7 +/- 9.6 years,
52% female, 75% VVI, 25% dual chamber were analysed. One hundred and
forty (43%) were in atrial fibrillation and were older, 80.5 +/- 7.1 years,
compared with 75.5 +/- 11.4 years (P=0.014) for those in sinus rhythm.
Temporary pacemaker reprogramming was necessary in 86% in order to
determine the abnormal rhythm. Thirty-nine (28%) of those in atrial fibrillation
were anticoagulated; 37% were on aspirin; only 10.8% of those in atrial
fibrillation who were not anticoagulated had contraindications to this therapy.
Prevalence of atrial fibrillation increased with age, whereas that of
anticoagulation decreased with age. In conclusion, the majority of pacemaker
patients with atrial fibrillation, for whom anticoagulation is indicated, fails to
receive it: those caring for these patients are urged to ensure its much wider use.
(Europace 2000; 2: 115-118) (C) 2000 The European Society of Cardiology
Keywords: age/anticoagulation/ANTITHROMBOTIC THERAPY/aspirin/atrial
fibrillation/COMMUNITY/ENGLAND/fibrillation/Germany/HOSPITALS/LON
DON/NATIONAL PATTERNS/oral
anticoagulation/pacemaker/prevention/PRIMARY-CARE/SICK SINUS
SYNDROME/sinus
rhythm/survey/therapy/THROMBOEMBOLISM/use/VVI/WARFARIN USE
Freidl, W., Schmidt, R., Stronegger, W.J., Fazekas, F. and Reinhart, B. (1996),
Sociodemographic predictors and concurrent validity of The Mini Mental State
Examination and The Mattis Dementia Rating Scale. European Archives of
Psychiatry and Clinical Neuroscience, 246 (6), 317-319.
Abstract: The Mini Mental State Examination (MMSE) and the Mattis Dementia Rating
Scale (MDRS) are among the most commonly used screening tests for dementia.
The goals of our study were, firstly, to identify sociodemographic factors which
may explain the variance of test results in a community sample and, secondly, to
investigate the interrelationship of these two dementia screening tests in order to
evaluate the concurrent validity. A total of 1947 subjects were investigated in the
setting of the Austrian Stroke Prevention Study (ASPS). Our study confirms
most previous results demonstrating a relationship of higher dementia test scores
with both younger age and higher educational level. Interestingly, the results we
obtained suggest only a weak relationship and poor concurrent validity of the
two tests. The total scores of the two tests show poor joint variance. This could
lead to the conclusion that these tests evaluate different cognitive domains
Keywords: AGE/concurrent validity/dementia/dementia
screening/EDUCATION/POPULATION/predictors
Lindblad, U., Rastam, L. and Ranstam, J. (1993), Acute Myocardial-Infarction in
Patients Treated for Hypertension in the Skaraborg-Hypertension-Project.
European Heart Journal, 14 (3), 291-296
Keywords: ACUTE MYOCARDIAL
INFARCTION/BLOOD-PRESSURE/CARDIOVASCULAR
MORBIDITY/COHORT STUDY/COMMUNITY/CORONARY
HEART-DISEASE/FEMALE/HEART/HYPERTENSION/MALE/MEDICAL-C
ARE PROGRAM/MORTALITY/PRIMARY HEALTH CARE/PRIMARY
PREVENTION/PRIMARY PREVENTIVE TRIAL/STROKE
Debelder, M.A., Lovat, L.B., Tourikis, L., Leech, G. and Camm, A. (1993), Left Atrial
Spontaneous Contrast Echoes - Markers of Thromboembolic Risk in Patients
with Atrial-Fibrillation. European Heart Journal, 14 (3), 326-335
Keywords:
COMPLICATIONS/ECHOCARDIOGRAPHY/EMBOLISM/FRAMINGHAM/
HEART/MITRAL-VALVE
DISEASE/PREVALENCE/PREVENTION/SPONTANEOUS CONTRAST
ECHOES/STASIS/STROKE/SYSTEMIC
EMBOLIZATION/THROMBOEMBOLISM/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY
Gosse, P. and Clementy, J. (1995), Coronary Reserve in Experimental Myocardial
Hypertrophy. European Heart Journal, 16 22-25.
Abstract: Three types of dysfunction of the coronary circulation have been described in
experimental models of hypertension associated with left ventricular hypertrophy:
(1) reduced coronary reserve, (2) a relative decrease in perfusion of
subendocardial layers, (3) a shift to the right, i.e. to higher pressures, of the
circulation pressure autoregulation range. These abnormalities are also observed
in hypertensive patients although it is significant that they do not appear to be
related to the extent of left ventricular hypertrophy. The exact causes of these
abnormalities have yet to be elucidated. Left ventricular hypertrophy does nor
seem to be an essential factor although in certain experimental models of
hypertension, there does appear to be a mismatch between the development of
the coronary vasculature and hypertrophy of the myocytes. The stresses in
vessels due to the increase in systolic, and especially intraventricular diastolic
pressure can be viewed as additional aggravating factors The essential
abnormalities are structural and/or functional alterations in arterial walls. The
structural alterations are reflected by a narrowed lumen due to parietal thickening.
This may result from growth of muscle fibres (hypertrophy or hyperplasia) or
collagen tissue and/or remodelling of tissues with no overall change in mass.
Functionally, the reduced ability of the arteries to stretch, resulting from
endothelial alterations may also play a role in the abnormalities observed in
hypertensive patients. In our studies, we examined the effect of the
antihypertensive drug perindopril on the coronary circulation in the renovascular
hypertensive rat (two kidneys-1 clip). We found that this inhibitor of angiotensin
converting enzyme (ACE) led to a regression of left ventricular hypertrophy with
a return to normal of the coronary reserve Other studies using either this model
or the spontaneously hypertensive rat have also pointed to a beneficial action of
ACE inhibitors and other antihypertensive agents on the coronary circulation
with reversal of the structural alterations in arterioles. Coronary disease is the
main cause of mortality in hypertensive patients. Ironically, antihypertensive
therapy has yet to live up to its promise of reducing significantly either the
incidence or severity of coronary disease in such patients. Specific alterations of
the coronary circulation may account for the relative failure of-antihypertensive
drugs, despite their proven efficacy in other systems (e.g. stroke prevention). The
coronary circulation is unique in certain important respects. It is tightly regulated,
maintaining an almost constant flow rate over a wide range of aortic arterial
pressures (40-160 mmHg). Extraction of oxygen by the myocardium is almost
maximal under resting conditions, and so the circulatory reserve depends almost
entirely on the capacity to increase blood flow. This reserve is quite large since
there may be a 4 to 5-fold increase in coronary flow rate in response to effort
Another significant detail is that myocardial contraction may lead to an
interruption of coronary flow, especially in the deep subendocardial layers,
which thus tend to be perfused solely during diastole. This East factor can be
seen as the Achilles heel of the coronary circulation, which may be severely
limited by myocardial hypertrophy, especially in patients with hypertension
Keywords:
angiotensin/ARRHYTHMIAS/BLOOD-FLOW/CARDIAC-HYPERTROPHY/C
IRCULATION/CORONARY BLOOD FLOW/coronary disease/CORONARY
RESERVE/development/DYSFUNCTION/ENGLAND/EXERCISE/HEART/HE
ART-DISEASE/hypertension/HYPERTENSIVE
HEART/hypertrophy/incidence/LEFT VENTRICULAR
HYPERTROPHY/LEFT-VENTRICULAR
HYPERTROPHY/mortality/muscle/PRESSURE-FLOW
RELATIONSHIPS/prevention/rat/severity/SPONTANEOUSLY
HYPERTENSIVE RATS/stroke/stroke prevention
Koenig, W. (1995), Recent Progress in the Clinical Aspects of Fibrinogen. European
Heart Journal, 16 54-59.
Abstract: This article provides an overview of recently accumulated evidence on the
pathogenetic role of fibrinogen in various vascular beds; and tries to elucidate
determinants for patients' susceptibility so that subgroups at particular risk of
severe clinical complications can be characterized more accurately. Based on the
considerably elevated risk of cardiovascular complications associated with
increased levels of plasma fibrinogen, the potential value of lowering fibrinogen
in the primary or secondary prevention of atherosclerotic disease is now
recognized as an important topic for consideration. Recent progress in this field
will also be reviewed
Keywords: ACTIVATION/ANGIOTENSIN-CONVERTING ENZYME
INHIBITORS/ANTIPLATELET
DRUGS/APHERESIS/ARTERY/ATHEROSCLEROSIS/complications/CORON
ARY
HEART-DISEASE/CYTOKINES/DIABETES/ENGLAND/FIBRATES/FIBRIN
OGEN/HEART/HEMOSTASIS/ISCHEMIC HEART
DISEASE/MYOCARDIAL-INFARCTION/PERIPHERAL ARTERIAL
DISEASE/PLASMA- FIBRINOGEN/PLATELET
AGGREGATION/prevention/RISK/secondary
prevention/STATINS/STROKE/THROMBOLYTIC
AGENTS/TICLOPIDINE/vascular
Qizilbash, N. (1995), Fibrinogen and Cerebrovascular-Disease. European Heart Journal,
16 42-46.
Abstract: The importance of fibrinogen has been identified in two prospective
observational studies. Reactive elevations in fibrinogen levels that occur within
hours of a major stroke invalidate most cross-sectional case-control studies
evaluating fibrinogen as a risk factor. However, as no elevation is seen following
fresh episodes of transient ischaemic attacks, reliable conclusions drawn from a
case-control study using such patients support the findings of the prospective
studies. The association is related to occlusive stroke, but the relationship with
intracerebral haemorrhage is unclear. The relationship has been found to be
independent of other haemostatic and haemorheological factors (e.g. von
Willebrand factor, tissue plasminogen activator and packed cell volume).
Adjustment for regression dilution bias would further strengthen the observed
relationship. Therefore, after blood pressure, fibrinogen is the most important
potentially treatable risk factor for ischaemic stroke. There are several
mechanisms whereby fibrinogen could promote atherothromboembolism:
thrombosis through a hypercoagulable state; the acceleration of atherosclerosis;
or the reduction of blood flow due to high blood or plasma viscosity. The
mechanism, however, is unlikely to be mediated through high blood viscosity per
se as secondary erythrocytosis (another major determinant of blood viscosity)
has not consistently been found to be a risk factor for stroke. Studies relating
fibrinogen levels to the degree of carotid artery stenosis support the accelerating
influence of fibrinogen on atherosclerosis. Fibrinogen should be considered a
risk factor for ischaemic stroke and included in the assessment of individual risk
factors. For stroke prevention, individuals with high fibrinogen values but no
other risk factors should be considered for therapies to reduce the overall risk of
future stroke, i.e. blood pressure reduction and antiplatelet therapy, as well as
regular exercise, weight loss and possibly the adoption of a vegetarian diet
Keywords: antiplatelet therapy/atherosclerosis/BEZAFIBRATE/blood pressure/BLOOD
RHEOLOGY/CARDIOVASCULAR RISK FACTOR/carotid/case-control
studies/cell volume/CORONARY
HEART-DISEASE/diet/DRUGS/ENGLAND/exercise/FIBRATE/FIBRINOGE
N/GERIATRIC/HEART/LIPIDS/observational
studies/PLASMA-FIBRINOGEN/PRECIPITATION/prevention/prospective
studies/risk/risk factors/STROKE/stroke
prevention/thrombosis/transient/TRANSIENT ISCHEMIC
ATTACK/TRANSIENT ISCHEMIC ATTACKS/TREATMENT
Fuster, V. and Chesebro, J.H. (1995), Aspirin for Primary Prevention of
Coronary-Disease. European Heart Journal, 16 16-20
Keywords: ATHEROSCLEROSIS/CARDIOVASCULAR-
DISEASE/ENGLAND/HEART/ISCHEMIC-HEART-DISEASE/LOW-DOSE
WARFARIN/MEN/MYOCARDIAL INFARCTION/PLATELET
INHIBITOR/RISK/STROKE/THROMBOSIS/TRIAL
Nighoghossian, N., Perinetti, M., Barthelet, M., Adeleine, P. and Trouillas, P. (1996),
Potential cardioembolic sources of stroke in patients less than 60 years of age.
European Heart Journal, 17 (4), 590-594.
Abstract: Minor potential cardioembolic sources of stroke such as atrial septal aneurysm
or patent foramen ovale are important risk factors for cryptogenic stroke. We
aimed to determine the prevalence of these abnormalities through an exhaustive
aetiological work-up. One hundred and eighteen stroke patients under 60 years of
age, who had no evidence of a significant cardiac source of embolism, were
classified into four groups following transoesophageal echocardiography and
assessment of cervical arteries. Group A comprised 30 patients (25.4%) who had
an arteriopathy, probably related to stroke without ally cardiac abnormality;
group B, had only a potential cardiac source; group C, nine (7.6%) had an
obvious arterial source of stroke and incidental cardiac abnormalities; group D,
30 (25.4%) had neither cardiac or arterial source. Data were analysed with the
Chi-square test to compare risk factors between groups, and variance analysis
was used to compare age between groups. Significance was assessed as P50 ml.m(-2) (odds ratio=7.1, 95%
confidence interval=[1.5; 25.8]), anterior infarct location (odds ratio=4.1, 95%
confidence interval= [1.4; 11.5]) and reocclusion of the infarct-related artery
(odds ratio=7.3, 95% confidence interval=[1.3; 27.3]). Angioplasty of a patent
but significantly narrowed infarct-related artery was not found predictive.
Conclusions This study demonstrates that reocclusion of a previously open
infarct-related artery, as well as the initial low stroke volume index, enlarged
end- systolic volume index and anterior infarct location are independent
predictors of long-term left ventricular enlargement. These results emphasize the
impact of long-term sustained patency of the infarct-related artery on the
prevention of left ventricular dysfunction. The need for a larger randomized trial
is recognised
Keywords: 12- MONTH FOLLOW-UP/ANGIOPLASTY/coronary
angioplasty/coronary patency/coronary
reopening/ENGLAND/HEART/infarction/LATE CORONARY
REPERFUSION/left ventricular remodelling/myocardial
infarction/PATENCY/patent/PHASE-I/predictors/prevention/randomized/RAND
OMIZED TRIAL/stroke/SURVIVAL/THROMBOLYTIC THERAPY/TIMI
TRIAL/TISSUE PLASMINOGEN-ACTIVATOR
Ericsson, C.G. (1998), Results of the Bezafibrate Coronary Atherosclerosis Intervention
Trial (BECAIT) and an update on trials now in progress. European Heart
Journal, 19 H37-H41.
Abstract: Bezafibrate is a latest generation fibrate derivative that substantially reduces
total plasma cholesterol and triglyceride concentrations and increases high
density lipoprotein (HDL) cholesterol. The Bezafibrate Coronary Atherosclerosis
Intervention Trial (BECAIT) was a double-blind, placebo- controlled trial over 5
years to assess the angiographic benefits of bezafibrate retard (400 mg.day(-1))
in young, male, post-myocardial infarction (post-MI) patients. The trial
demonstrated that without lowering serum low density lipoprotein cholesterol,
progression of coronary atherosclerosis was prevented and the coronary event
rate reduced. In subgroup analyses, bezafibrate decreased the rate of progression
of coronary atherosclerosis and coronary event rate in young post-MI patients,
primarily by slowing the progression of mild-to-moderate lesions. Additional
studies are underway to explore further the benefits of this fibrate in coronary
heart disease. The Bezafibrate Infarction Prevention study is the first trial to
investigate the effects of raising HDL cholesterol and lowering triglycerides in
patients with established coronary disease. The Lower Extremity Arterial
Disease Event Reduction study is assessing the benefit of lowering fibrinogen in
the prevention of major ischaemic heart disease and stroke in patients with
peripheral vascular disease
Keywords: ARTERY
DISEASE/atherosclerosis/BECAIT/bezafibrate/CHOLESTEROL/coronary
disease/coronary heart disease/DESIGN/ENGLAND/fibrinogen/HEART/high
density lipoprotein/hyperlipidaemia/INFARCTION
PREVENTION/prevention/REGRESSION/stroke/trials/TRIGLYCERIDE-RICH
LIPOPROTEINS/triglycerides/vascular/vascular disease
Yusuf, S. and Lonn, E. (1998), Anti-ischaemic effects of ACE inhibitors: review of
current clinical evidence and ongoing clinical trials. European Heart Journal, 19
J36-J44.
Abstract: Important ongoing experimental and clinical research is evaluating the
potential use of ACE inhibitors in a wider range of patients, in addition to their
well accepted use in heart failure, left ventricular dysfunction and hypertension.
We review briefly the clinical data supporting a potential role for ACE inhibitors
in the prevention of myocardial infarction and stroke and the wider use of these
agents in hypertension, renal disease and diabetes. We also briefly review the
major ongoing trials evaluating these hypotheses
Keywords: angiotensin-converting enzyme
inhibitors/ANGIOTENSIN-CONVERTING-ENZYME/CAPTOPRIL/CHRONI
C STABLE ANGINA/clinical trials/CORONARY-ARTERY
DISEASE/diabetes/ENGLAND/GENE POLYMORPHISM/HEART/heart
failure/hypertension/ISCHEMIC-HEART-DISEASE/myocardial
infarction/MYOCARDIAL-
INFARCTION/PECTORIS/PLASMA-RENIN/prevention/RISK/stroke/trials
Muiesan, M.L. and Agabiti-Rosei, E. (1999), Hypertension, quantitative benefits of
treatment: optimal intervention points and management in aircrew. European
Heart Journal Supplements, 1 (D), D32-D36.
Abstract: The risks associated with arterial hypertension, and particularly increased
cardiovascular, cerebral fatal and non- fatal events are well established, as are
those with end-stage renal disease. The incidence of stroke and, to a lesser extent,
of fatal and non-fatal coronary events, is significantly reduced by lowering high
blood pressure, as demonstrated in previous studies. The relative benefit of
therapy is fairly uniform in most intervention trials, independent of severity of
hypertension and of patient age. However, the absolute benefit varies between
the different trials and is much greater in severe hypertensive and/or elderly
patients, in whom the absolute risk of cardiovascular events is also higher.
Antihypertensive treatment is more cost-effective in high-risk patients than in
those without complications in the short term. In young and middle-aged patients
with mild hypertension, earlier treatment, though less cost-effective, is likely to
be more effective in the prevention of end organ damage development, and the
reduction of subsequent morbid events in the long term. This should help
subjects achieve their full life-span. Possible strategies to improve the benefit of
antihypertensive treatment have been recently investigated by appropriate trials
and it has been suggested that the use of cardiovascular drugs which have
tissue-protective properties may have an additional benefit similar to that
achieved by lowering the blood pressure
Keywords: absolute risk/age/aircrew licensing/antihypertensive treatment/arterial
hypertension/ARTERIAL-HYPERTENSION/aviation/blood
pressure/BLOOD-PRESSURE/cardiovascular/cardiovascular
events/CARDIOVASCULAR RISK/cerebral/complications/coronary artery
disease/CORONARY HEART-DISEASE/development/drugs/elderly/end-stage
renal disease/ENGLAND/HEART/high blood
pressure/hypertension/HYPERTROPHY/incidence/LEFT-VENTRICULAR
MASS/MEN/MORBID EVENTS/POPULATION/prevention/renal/renal
disease/risk/severity/stroke/therapy/treatment/TRIALS
Haberl, R.L. and Dembowski, K. (1999), Atherothrombosis: common factor in stroke,
myocardial infarction and peripheral vascular disease. European Heart Journal,
20 A41-A44.
Abstract: Thrombosis superimposed on atherosclerosis causes approximately 60% of all
brain infarctions. Patients with atherothrombotic occlusion of the cerebral
vasculature are also at increased risk for occlusion within other vascular beds, as
is suggested by the presence of similar risk factors for occlusive disease in the
cerebral, cardiac and peripheral circulation. Because of this, there is a need for
treatments that address a single occurrence of atherothrombosis, such as
occlusion of the cerebral vessels, but which also provide effective protection
against other potential occurrences of ischaemia throughout the body.
Antithrombotic therapy is a key aspect of secondary treatment for patients who
have experienced brain infarctions. Secondary prevention of a recurrent cerebral
infarct may thus constitute primary prevention for both heart disease and
peripheral arterial disease
Keywords: antithrombotic therapy/atherosclerosis/BLOOD-PRESSURE/brain/BRAIN
INFARCTION/CAROTID STENOSIS/cerebral/cerebral
vessels/CHLAMYDIA-PNEUMONIAE/CHOLESTEROL
LEVELS/CORONARY-ARTERY
DISEASE/ENGLAND/HEART/HEART-DISEASE/infarction/INFECTION/isch
aemia/MEN/myocardial/myocardial infarction/peripheral arterial
disease/peripheral vascular disease/prevention/primary/primary
prevention/RISK/risk factors/stroke/therapy/treatment/vascular/vascular
disease/vasculature
Packard, C.J. (1999), Major statin trials: relationship between lipid changes and
cardiovascular events. European Heart Journal Supplements, 1 (T), T2-T6.
Abstract: The lipid hypothesis, that lowering plasma cholesterol leads to a reduction in
coronary heart disease risk, is now regarded as proven. Five large-scale, clinical
outcome trials have shown that pravastatin, simvastatin and lovastatin are able to
reduce the incidence of myocardial infarction and, in the case of pravastatin and
simvastatin, decrease the risk of cardiovascular death and improve survival.
Subgroup analyses show that the benefits are independent of gender and other
treatment modalities such as antihypertensive agents and aspirin. An unexpected
further benefit was the reduction in the risk of stroke
Keywords: antihypertensive agents/aspirin/atherosclerosis/AVERAGE
CHOLESTEROL LEVELS/cardiovascular events/cholesterol/coronary heart
disease/CORONARY HEART-DISEASE/disease
risk/ENGLAND/HEART/incidence/infarction/low density
lipoprotein/MEN/myocardial/myocardial
infarction/PRAVASTATIN/PRIMARY-
PREVENTION/REDUCTION/risk/SERUM-CHOLESTEROL/stroke/therapy
goals/treatment/trials
Haberl, R.L. and Dembowski, K. (1999), Atherothrombosis: common factor in stroke,
myocardial infarction and peripheral vascular disease. European Heart Journal
Supplements, 1 (A), A41-A44.
Abstract: Thrombosis superimposed on atherosclerosis causes approximately 60% of all
brain infarctions. Patients with atherothrombotic occlusion of the cerebral
vasculature are also at increased risk for occlusion within other vascular beds, as
is suggested by the presence of similar risk factors for occlusive disease in the
cerebral, cardiac and peripheral circulation. Because of this, there is a need for
treatments that address a single occurrence of atherothrombosis, such as
occlusion of the cerebral vessels, but which also provide effective protection
against other potential occurrences of ischaemia throughout the body.
Antithrombotic therapy is a key aspect of secondary treatment for patients who
have experienced brain infarctions. Secondary prevention of a recurrent cerebral
infarct may thus constitute primary prevention for both heart disease and
peripheral arterial disease
Keywords: antithrombotic therapy/atherosclerosis/BLOOD-PRESSURE/brain/BRAIN
INFARCTION/CAROTID STENOSIS/cerebral/cerebral
vessels/CHLAMYDIA-PNEUMONIAE/CHOLESTEROL
LEVELS/CORONARY-ARTERY
DISEASE/ENGLAND/HEART/HEART-DISEASE/infarction/INFECTION/isch
aemia/MEN/myocardial/myocardial infarction/peripheral arterial
disease/peripheral vascular disease/prevention/primary/primary
prevention/RISK/risk factors/stroke/therapy/treatment/vascular/vascular
disease/vasculature
Frost, L., Engholm, G., Moller, H. and Husted, S. (1999), Decrease in mortality in
patients with a hospital diagnosis of atrial fibrillation in Denmark during the
period 1980-1993. European Heart Journal, 20 (21), 1592-1599.
Abstract: Background Atrial fibrillation is associated with increased mortality. We
hypothesized that the death rate in atrial fibrillation patients in Denmark has
diminished during the period 1980-1993. Methods In a random sample of half of
the Danish population, 30 330 patients were found to have a diagnosis of
incident atrial fibrillation in the Danish National Hospital Discharge Register
1980-1993. Information on previous and concomitant cardiovascular and
metabolic diseases during the period 1977-1993 was sought in the register. The
temporal trend in total and cardiovascular mortality in the cohort of atrial
fibrillation patients was analysed. Results A significant decrease in total and
cardiovascular mortality was seen, 12-13% for total mortality and 17-18% for
cardiovascular mortality. By adjusting for the decreasing cardiovascular
mortality rate in the general population, a decrease in the relative risk of total
mortality of 8-13% with time was seen for the atrial fibrillation cohort, compared
with the population risk, while no reduction in the relative risk of cardiovascular
death was seen. Conclusion A significant decrease in mortality with calendar
period occurred in the cohort of atrial fibrillation patients. (C) 1999 The
European Society of Cardiology
Keywords: atrial fibrillation/cardiovascular/cardiovascular
mortality/diagnosis/diseases/ENGLAND/epidemiology/fibrillation/HEART/hosp
ital/IMPACT/mortality/POPULATION/PREVENTION/prognosis/relative
risk/risk/RISK-FACTORS/STROKE/TRENDS/WARFARIN
Verheugt, F.W.A. (1999), Anticoagulation and certification to fly: risks and benefits of
different strategies. European Heart Journal Supplements, 1 (D), D114-D117.
Abstract: Atrial fibrillation is a common arrhythmia, especially in the elderly. The
presence of atrial fibrillation increases the risk of stroke three- to fivefold. This
risk largely relates to dilatation of the left side of the heart and a history of
previous stroke. Both anticoagulant and antiplatelet therapy have been shown to
reduce the stroke risk with acceptable safety. High-risk patients should receive
full dose oral anticoagulation (INR 2.0-3.0) and the low-risk patient, antiplatelet
therapy. Oral anticoagulation carries a significant risk of bleeding complications,
especially when the full dose regime is applied. Only low-risk individuals with
lone atrial fibrillation are likely to be eligible for certification to fly and should
be limited to multi-crew operation
Keywords: aircrew licensing/anticoagulant/anticoagulation/antiplatelet/antiplatelet
therapy/arrhythmia/atrial
fibrillation/ATRIAL-FIBRILLATION/aviation/complications/echocardiography/
elderly/ENGLAND/fibrillation/HEART/history/INR/Netherlands/oral
anticoagulation/PREVENTION/risk/safety/STROKE/stroke/therapy/WARFARI
N
Meade, T., Sleight, P., Collins, R., Armitage, J., Parish, S., Peto, R., Youngman, L.,
Buxton, M., de Bono, D., Fuller, J., Keech, A., Mansfield, A., Pentecost, B.,
Simpson, D., Warlow, C., O'Toole, L., Doll, R., Wilhelmsen, L., Fox, K., Hill, C.,
Sandercock, P., Barton, J., Bray, C., Jayne, K., Lawson, A., Harding, P., Lay, M.,
Wallendszus, K., Benjamin, N., Webster, J., Jamieson, J., Donald, L., Blandford,
R., Carrington, L., McMahon, H., Cheetham, D., Reckless, J., Brice, L.,
Carpenter, R., Christmas, J., Flower, C., Cooper, I., Frampton, S., Pickerell, E.,
Wells, J., Scott, M., Crowe, V., Shaw, A., Shannon, L., Jones, S., Faulkner, G.,
Lavery, A., O'Leary, H., Watson, R., Capewell, C., Hughes, S., Bain, S., Jones,
A., Holmes, G., Jewkes, C., Bellamy, T., Harrison, P., Buller, N., Nield, H.,
Smith, E., Vint, P., Crook, P., Williams, J., Bateson, M., Cawley, P., Gill, P.,
Simpson, K., Armitage, M., Cope, C., Tricksey, J., Wilson, M., Cottrell, S.,
Jones, C., Llewellyn, M., Smith, P., Woodsford, T., Vincent, R., Joyce, E.,
Skipper, N., Peters, P., Lemon, M., Stansbie, D., Kidan, A.H., Halestrap, M.,
Gibbons, A., Meredith, J., Dawkins, C., Papouchado, M., Baker, L., Boulton, K.,
Dawe, C., Lewis, A., Wisby, J., Brown, M., Emeny, J., Smith, W., Trutwein, D.,
Cornwell, M., Lloyd, D., White, C., Khalifa, M., MacKereth, N., Martin, G.,
Baxter, M., Chambers, R., Glenn, S., Kerr, J., Golesworthy, G., Watts, A.,
Baines, G., Groom, J., Price, L., Barlow, I., Mallya, S., Lewis, S., Maiden, J.,
Nash, M., Lowe, V., Scott, A., Cozens, S., Hannah, J., Hinwood, M., Millward,
J., Murphy, J., Charters, M., Graham, B., Banks, M., Nobbs, R., Kemp, T.,
Turner, P., Sheldrake, S., Labib, M., Pearson, R., Sidaway, J., Davies, P.,
Hodgkiss, M., MacLeod, D., Stuart, R., Albrock, J., Fisher, J., Stuart, F.,
Swainson, C., Glenn, S., Johnston, J., Sadler, S., Curren, M., Feirnie, S.,
Stenhouse, L., Lindley, R., Warlow, C., Kenny, A., Waddell, F., Brownlie, M.,
Guilar, I., Marshall, A., Went, J., Clarke, S., Inman, A., Simmonds, J., Duook, B.,
Mortimore, G., Pascoe, A., Cobbe, S., Campbell, C., Young, H., Keeble, M.,
Absalom, S., Bracey, N., Falco, L., Stone, D., Tildesley, G., Carr, B., Longstaff,
G., Turner, A., Wilkinson, H., Wilkinson, S., Hillson, R., Brookes, D., Capper,
B., Price, K., Badrick, V., Griffiths, H., Fitzgerald, J., Lewis, S., Campbell, P.,
Baines, G., Claypole, G., Lomas, J., Rogers, A., Brown, A., Cheshire, J., Rowley,
J., Ball, S., Prentice, C., Hall, A., Atha, P., Caffrey, K., Currie, W., Hague, C.,
Hall, S., Maguire, P., Rose, C., Watson, R., Buxton, A., Wedgwood, A., Gilbey,
S., Currie, W., Drury, K., Hall, S., Rose, C., Wilson, J., Vaughn, M., Humphrey,
P., Blocksage, J., McSloy, R., Ost, K., Owen, L., Saminaden, S., Watling, D.,
Wiseman, J., Davies, J., Kehely, A., Kooner, J., Capper, B., Corbett, I., Peters, J.,
Price, K., Van Goethem, M., Chambers, J., Crawshaw, M., O'Sullivan, J., Powell,
S., Reoch, M., Sanders, J., Beament, M.F., Fangrad, B., Williams, Y., Banim, S.,
Crake, T., Ford, B., Glynn, V., Ismail, S., Buller, N., Coats, A., Aitken, L.,
Cruddas, E., Serup-Hansen, K., Nosworthy, D., Reilly, N. and Coppack, S.
(1999), MRC BHFHeart Protection Study of cholesterol-lowering therapy and of
antioxidant vitamin supplementation in a wide range of patients at increased risk
of coronary heart disease death: early safety and efficacy experience. European
Heart Journal, 20 (10), 725-741.
Abstract: Aims In observational studies, prolonged lower blood total cholesterol levels -
down at least to 3 mmol . l(-1) - are associated with lower risks of coronary heart
disease. Cholesterol-lowering therapy may, therefore, be worthwhile for
individuals at high risk of coronary heart disease events irrespective of their
presenting cholesterol levels. Observational studies also suggest that increased
dietary intake of antioxidant vitamins may be associated with lower risks of
coronary heart disease. The present randomized trial aims to assess reliably the
effects on mortality and major morbidity of cholesterol-lowering therapy and of
antioxidant vitamin supplementation in a wide range of different categories of
high-risk patients. Methods and Results Men and women aged 40 to 80 years
were eligible provided they were considered to be at elevated risk of coronary
heart disease death because of past history of myocardial infarction or other
coronary heart disease, occlusive disease of non-coronary arteries, diabetes
mellitus or treated hypertension; had baseline blood total cholesterol of 3.5 nmol .
l(-1) or greater and no clear indications for, or contraindications to, either of the
study treatments. Eligible patients who completed a pre-randomization run-in
phase on active treatment were randomly allocated to receive simvastatin (40 mg
daily) or matching placebo tablets and, in a '2 x 2 factorial' design: antioxidant
vitamins (600 mg vitamin E, 250 mg vitamin C and 20 mg beta-carotene daily)
or matching placebo capsules. Follow-up visits after randomization are
scheduled at 4, 8 and 12 months, and then 6- monthly, for at least 5 years.
Between July 1994 and May 1997, 15 454 men and 5082 women were
randomized, with 9515 aged over 65 years at entry. Diagnostic criteria
overlapped, with 8510 (41%) having had myocardial infarction (most of whom
were either female, or elderly or with low blood cholesterol), 4869 (24%) some
other history of coronary heart disease, 3288 (16%) cerebrovascular disease,
6748 (33%) peripheral vascular disease? 5963 (29%) diabetes mellitus (of whom
3985 had no history of coronary heart disease) and 8455 (41%) treated
hypertension. Baseline non-fasting total cholesterol levels were less than 5.5
mmol . l(-1) in 7882 (38%) participants. and LDL (low density lipoprotein)
cholesterol less than 3.0 mmol . l(-1) in 6888 (34%). During a mean follow-up of
25 months (range: 13 to 47 months), no significant differences had been
observed between the treatment groups in the numbers of patients with muscle
symptoms, other possible side-effects leading to termination of study treatment,
or elevated liver and muscle enzymes. After 30 months of follow-up, 81% of
randomized patients remained compliant with taking their study simvastatin or
placebo tablets, and allocation to simvastatin produced average reductions in
non-fasting blood total and LDL cholesterol of about 1.5-1.6 mmol . l(-1) and
1.1-1.2 mmol . l(-1) respectively. Eighty-seven per cent of patients remained
compliant with taking their vitamin or placebo capsules, and allocation to the
vitamin supplement produced an average increase in plasma vitamin E levels of
about 24 mu mol . l(-1). Based on this initial follow-up period, the estimated
annual rate of non-fatal myocardial infarction or fatal coronary heart disease is
2.4%, annual stroke rate is 1.3%. and annual all- cause mortality rate is 2.2%.
Conclusion The Heart Protection Study is large, it has included a wide range of
patients at high risk of vascular events, and the treatment regimens being studied
are well-tolerated and produce substantial effects on blood lipid and vitamin
levels. The study should, therefore, provide reliable evidence about the effects of
cholesterol- lowering therapy and of antioxidant vitamin supplements on all-
cause or cause-specific mortality and major morbidity in a range of different
categories of individuals for whom uncertainty remains about the balance of
benefits and risks of these treatments
Keywords:
aged/ALPHA-TOCOPHEROL/ANGINA-PECTORIS/antioxidant/antioxidant
vitamins/arteries/beta carotene/BETA-
CAROTENE/CARDIOVASCULAR-DISEASE/cerebrovascular/cerebrovascular
disease/cholesterol/cholesterol-lowering/coronary heart
disease/design/diabetes/diabetes
mellitus/elderly/England/heart/history/hypertension/infarction/LDL/LDL
cholesterol/LDL-cholesterol/low density
lipoprotein/LOW-DENSITY-LIPOPROTEIN/men/morbidity/mortality/muscle/
myocardial/myocardial infarction/MYOCARDIAL-INFARCTION/observational
studies/ORAL SUPPLEMENTATION/peripheral vascular disease/PRIMARY
PREVENTION/randomized/randomized trial/REQUIRING PROLONGED
OBSERVATION/risk/safety/SERUM-
CHOLESTEROL/simvastatin/stroke/therapy/treatment/vascular/vascular
disease/vitamin C/vitamin E/vitamins/women
Grover, S.A. (2000), Lipid management: what are the predictors of benefit? European
Heart Journal Supplements, 2 (L), L2-L6.
Abstract: Clinicians, patients, and healthcare payers are now faced with the reality of the
enormous burden of treating hyperlipidaemia and hypertension for primary or
secondary prevention. On the basis of results of short-term clinical trials these
risk factors will require lifelong therapy. A need therefore exists for disease
simulation models that can estimate the long-term benefits of therapy for specific
groups of patients. To evaluate fully the benefits of possible treatments, both
cerebrovascular events and coronary events must be considered. Recent clinical
trial results suggest that, for lipid modification, previous models focusing only on
coronary disease may underestimate the impact on stroke. The Cardiovascular
Disease Life Expectancy Model was developed to estimate the benefits of risk
factor modification in the primary and secondary prevention of cardiovascular
disease, including coronary disease and stroke. It is shown that epidemiological
data can be used to forecast the benefits of therapy demonstrated in randomized
clinical trials
Keywords: cardiovascular/cardiovascular disease/Cardiovascular Disease Life
Expectancy Model/cerebrovascular/CHOLESTEROL/clinical trials/coronary
disease/CORONARY-HEART-DISEASE/COST-EFFECTIVENESS/ENGLAN
D/HEART/HYPERCHOLESTEROLEMIA/hyperlipidaemia/hypertension/MOR
TALITY/PRAVASTATIN/predictors/prevention/primary/primary
prevention/PROGRAM/randomized/REDUCTION/RISK/risk factor/risk
factors/SECONDARY PREVENTION/secondary
prevention/simulation/stroke/therapy/trials
Lauterbach, K.W., Binnen, T., Evers, T., Harnischmacher, U., Ludwig, D., Hanrath, P.,
Krone, W., Lehmacher, W., Leys, D., Neuhaus, K.L. and Windler, E. (2000),
Primary prevention of stroke: RESPECT. European Heart Journal Supplements,
2 (D), D51-D53
Keywords:
CHOLESTEROL/ENGLAND/Germany/HEART/METAANALYSIS/PRAVAS
TATIN/prevention/REDUCTASE INHIBITORS/stroke/TRIALS
van Hout, B.A. and Simoons, M.L. (2001), Cost-effectiveness of HMG coenzyme
reductase inhibitors - Whom to treat? European Heart Journal, 22 (9), 751-761.
Abstract: Aims Treatment guidelines have been developed for both 'primary' and
'secondary' prevention of coronary heart disease. These should consider both the
efficacy as well as the costs of such treatment, particularly the costs of treatment
with HMG co-enzyme A reductase inhibitors (statins). In the context of guideline
development in The Netherlands, the cost effectiveness of treatment with statins
was analysed. Methods Following a modelling approach, cost effectiveness was
analysed as a function of a patient's initial risk for new coronary heart disease
events, combining results from 4S, CARE, LIPID, WOSCOPS and AFCAPS
with Dutch cost data. For each sex and age group, an estimate was made of the
level of cardiovascular risks that might correspond to a cost-effectiveness ratio
under NLG 40 000 (Euro 18 151) per life year gained. Results If the 10-year risk
of myocardial infarction, stroke or cardiovascular death was estimated at 9%
(AFCAPS/ TexCAPS), 20% (WOSCOPS), 36%, (CARE) 36% (LIPID) and 47%
(4S), cost effectiveness was estimated at Euro 51 400, Euro 26 013, Euro 9970,
Euro 8028 and Euro 6695. The arbitrary threshold of NLG 40 000
(approximately Euro 18 000) was achieved at a 10 year coronary heart disease
event risk ranging from 19% to 26% for different age groups. Assuming the
effectiveness of statin treatment decreased with age, a 10-year risk,
corresponding to Euro 18 000, varied from 11% (under age 30) to 41% (over age
80). Patients at higher risk levels should be considered for statin therapy.
Conclusions Treatment costs for primary or secondary prevention are determined
predominantly by the costs of statin drugs. The developed model allows
comparison of cost effectiveness of statin therapy across a wide range of subjects
with or without coronary heart disease. The consensus committee in the
Netherlands postulated that drug therapy should be considered in subjects with or
without coronary heart disease in which cost-effectivenesss is similar. Such
groups can be identified using the presented model. When cost effectiveness
ratios up to Euro 18 000 per life year gained are deemed acceptable, statin
treatment should be considered in most patients with known cardiovascular
disease (secondary prevention), and in a limited group of subjects who are at
high risk of developing coronary heart disease (primary prevention). (Eur Heart J
2001; 22: 751- 761, doi:10.1053/euhj.2000.2308) (C) 2001 The European
Society of Cardiology
Keywords: 4S/age/AVERAGE CHOLESTEROL
LEVELS/cardiovascular/cardiovascular disease/CARE/consensus/coronary heart
disease/CORONARY-ARTERY DISEASE/cost/cost
effectiveness/cost-effectiveness/costs/death/development/disease/drug
therapy/drugs/ECONOMIC-EVALUATION/ENGLAND/EVENTS/guideline/gu
idelines/HEART/heart disease/HEART- DISEASE/high risk/HMG coenzyme
reductase inhibitors/infarction/LIPID/MORTALITY/myocardial/myocardial
infarction/Netherlands/PRAVASTATIN/prevention/primary/primary
prevention/PROGRESSION/RISK/secondary/SECONDARY
PREVENTION/sex/statin/statins/stroke/therapy/treatment/treatment
guidelines/WOSCOPS
Marchioli, R. (2001), Treatment with n-3 polyunsaturated fatty acids after myocardial
infarction: results of GISSI-Prevenzione Trial. European Heart Journal
Supplements, 3 (D), D85-D97.
Abstract: GISSI-Prevenzione was conceived as a population, pragmatic trial on patients
with recent myocardial infarction conducted in the framework of the Italian
public health sysem. In GISSI- Prevenzione, patients were invited to follow
Mediterranean dietary habits, and were treated with up-to-date preventive.
pharmacological interventions. Long-term n-3 PUFA 1 g daily, but not vitamin E
300 mg daily, was beneficial for death and for combined death, non-fatal
myocardial infarction, and stroke. All the benefit, however, was attributable to
the decrease in risk for overall, cardiovascular, cardiac, coronary, and sudden
death. At variance from the orientation of a scientific scenario largely dominated
by the 'cholesterol- heart hypothesis', GISSI-Prevenzione results indicate n-3
PUFA (virtually devoid of any cholesterol-lowering effect) as a relevant
pharmacological treatment for secondary prevention after myocardial infarction.
As to the relevance and comparability of GISSI-Prevenzione results, up to 5-7
lives could be saved per 1000 patients with previous myocardial infarction
treated with n-3 PUFA (1 g daily) per year. Such a result is comparable to that
observed in the LIPID trial, where 5.2 lives could be saved per 1000
hypercholaesterolemic, CHD patients treated with pravastatin for 1 year. The
choice in favour of a relatively low-dose regimen (1 g capsule daily) more
acceptable for long-term treatment in a population of patients following
Mediterranean dietary habits, the pattern of effects seen in GISSI-Prevenzione
(namely, reduction of overall mortality with no decrease in the rate of non-fatal
myocardial infarction), all suggest that it can confidently be said that n-3 PUFA
treatment should be considered a recommended new component of secondary
prevention. The importance of this combined/additive effect is further suggested
by the preliminary analyses (to be submitted in the final form for publication) of
the interplay between diet and n-3 PUFA: there is an interesting direct
correlation between size of the effect and 'correctness' of background diets. It can
be anticipated that a conceptual barrier must be overcome: a 'dietary drug' should
be added to 'dietary advice', which remains fundamental to allow this statement
to become true in clinical practice. (C) 2001 The European Society of Cardiology
Keywords:
ALPHA-TOCOPHEROL/cardiac/cardiovascular/CARDIOVASCULAR-DISEA
SE/CHD/cholesterol/cholesterol-lowering/clinical practice/clinical
trial/CORONARY
HEART-DISEASE/death/diet/ENGLAND/FISH-OIL/health/HEART/infarction/
LONG-CHAIN/LOW-DENSITY-LIPOPROTEIN/mortality/myocardial/myocar
dial infarction/n-3 PUFA/pharmacological
treatment/PLACEBO-CONTROLLED
TRIAL/population/pravastatin/prevention/public health/RANDOMIZED
CONTROLLED TRIAL/RAT CARDIAC
MYOCYTES/risk/secondary/secondary
prevention/stroke/sudden/treatment/trial/vitamin E/VITAMIN-E
CONSUMPTION
Marchioli, R., Avanzini, F., Barzi, F., Chieffo, C., Di Castelnuovo, A., Franzosi, M.G.,
Geraci, E., Maggioni, A.P., Marfisi, R.M., Mininni, N., Nicolosi, G.L., Santini,
M., Schweiger, C., Tavazzi, L., Tognoni, G. and Valagussa, F. (2001),
Assessment of absolute risk of death after myocardial infarction by use of
multiple-risk-factor assessment equations - GISSI-Prevenzione mortality risk
chart. European Heart Journal, 22 (22), 2085-2103.
Abstract: Aims To present and discuss a comprehensive and ready to use prediction
model of risk of death after myocardial infarction based on the very recently
concluded follow-up of the large GISSI-Prevenzione cohort and on the integrated
evaluation of different categories of risk factors: those that are non- modifiable.
and those related to lifestyles, co-morbidity, background. and other conventional
clinical complications produced by the index myocardial infarction. Methods
The 11 324 men and women recruited in the study within 3 months from their
index myocardial infarction have been followed-up to 4 years. The following risk
factors have been used in a Cox proportional hazards model: non-modifiable risk
factors: age and sex, complications after myocardial infarction: indicators of left
ventricular dysfunction (signs or symptoms of acute left ventricular failure
during hospitalization. ejection fraction, NYHA class and extent or ventricular
asynergy at echocardiography), indicators of electrical instability (number of
premature ventricular beats per hour, sustained or repetitive arrhythmias during
24-h Holler monitoring), indicators of residual ischaemia (spontaneous angina
pectoris after myocardial infarction, Canadian Angina Classification class, and
exercise testing results); cardiovascular risk factors: smoking habits, history of
diabetes mellitus and arterial hypertension, systolic and diastolic blood pressure.
blood total and HDL cholesterol, triglycerides, fibrinogen, leukocytes count,
intermittent claudication. and heart rate. Multiple regression modelling was
assessed by receiver operating characteristic (ROC) analysis. Generalizability of
the models was assessed through cross validation and bootstrapping techniques.
Population and Results During the 4 years of follow-up, a total of 1071 patients
died. Age and left ventricular dysfunction were the most relevant predictors of
death. Because of pharmacological treatments, total blood cholesterol,
triglycerides, and blood pressure values were not significantly associated with
prognosis. Sex-specific prediction equations were formulated to predict risk of
death according to age, simple indicators of left ventricular dysfunction.,
electrical instability, and residual ischaemia along with the following
cardiovascular risk factors: smoking habits, history of diabetes mellitus and
arterial hypertension, blood HDL cholesterol, fibrinogen, leukocyte count,
intermittent claudication, and heart rate. The predictive models produced on the
basis of information available in the routine conditions of clinical care after
myocardial infarction provide ready to use and highly discriminant criteria to
guide secondary prevention strategies. Conclusions and Implications Besides
documenting what should be the preferred and practicable focus of clinical
attention for today's patients, the experience of GISSI-Prevenzione suggests that
periodically and prospectively collected databases on 'naturalistic' cohorts could
be an important option for updating and verifying the impact of guidelines,
which should incorporate the different components of the complex profile of
cardiovascular risk. The GISSI Prevenzione risk function is a simple tool to
predict risk of death and to improve clinical management of subjects with recent
myocardial infarction. The use of predictive risk algorithms can favour the shift
from medical logic, based on the treatment of single risk factors, to one (C) 2001
The European Society of Cardiology
Keywords: absolute risk/acute/age/angina/angina pectoris/arrhythmias/arterial
hypertension/ASPIRIN/blood
pressure/BLOOD-PRESSURE/cardiovascular/cardiovascular risk/cardiovascular
risk factors/CARDIOVASCULAR-DISEASE/cholesterol/CLINICAL-
PRACTICE/comorbidity/complications/congestive heart
failure/CORONARY-HEART-DISEASE/death/diabetes/diabetes
mellitus/diastolic blood
pressure/echocardiography/ENGLAND/evaluation/exercise/fibrinogen/guideline
s/HDL/HDL
cholesterol/HEART/history/hospitalization/hypertension/infarction/ischaemia/isc
haemia./left ventricular/left ventricular
dysfunction/medical/men/monitoring/mortality/myocardial/myocardial
infarction/PLASMA-FIBRINOGEN/prediction/predictors/prevention/prognosis/
PROGNOSTIC-SIGNIFICANCE/residual/risk/risk
factors/secondary/SECONDARY
PREVENTION/sex/smoking/STROKE/symptoms/treatment/triglycerides/UNIT
ED-STATES/use/validation/women
Anand, I.S. and Florea, V.G. (2001), Diuretics in chronic heart failure - benefits and
hazards. European Heart Journal Supplements, 3 (G), G8-G18.
Abstract: Diuretics are indispensable in the management of oedema of chronic heart
failure (CHF). When given to patients with congestion, diuretics relieve
symptoms and improve cardiac performance. However, the use of diuretics in
patients without fluid retention may have deleterious effects because they may
decrease stroke volume and blood pressure, resulting in neurohormonal
activation. Moreover, the effects of diuretics on electrolyte and metabolic
imbalance may trigger ventricular arrhythmias with adverse consequences on
survival. Whereas treatment of hyper-tension with diuretics prevents the
development of CHF, no randomized trial has assessed the effects of diuretics on
mortality in patients with CHF. Reduced mortality using spironolactone in
patients with CHF in the RALES trial may not be related to its diuretic effects.
Baseline use of a non-potassium-sparing diuretic in the SOLVD prevention and
treatment trials was associated with an increased risk of arrhythmic death. As
only limited data are available on improved prognosis with diuretics, long-term
randomized mortality trials should be conducted. The recent TORIC study may
be the first step in this direction. (Eur Heart J Supplements 2001; 3 (Suppl G):
G8-G18) (C) 2001 The European Society of Cardiology
Keywords: activation/ANGIOTENSIN-ALDOSTERONE
SYSTEM/arrhythmia/arrhythmias/ATRIAL NATRIURETIC PEPTIDE/blood
pressure/BODY-WATER/cardiac/CONGESTIVE
CARDIAC-FAILURE/CONVERTING-ENZYME
INHIBITION/death/development/DISTAL CONVOLUTED
TUBULE/diuretics/electrolyte disturbances/ENGLAND/heart/heart
failure/hypertension/LEFT-VENTRICULAR
DYSFUNCTION/management/mortality/PLASMA
HORMONES/prevention/prognosis/randomized/randomized
trial/RENAL-FUNCTION/risk/SKELETAL-MUSCLE/stroke/survival/symptom
s/torasemide/treatment/trial/trials/use
Frykman, V., Beerman, B., Ryden, L. and Rosenqvist, M. (2001), Management of atrial
fibrillation: discrepancy between guideline recommendations and actual practice
exposes patients to risk for complications. European Heart Journal, 22 (20),
1954-1959.
Abstract: Aims To assess compliance to guidelines in the management of patients with
atrial fibrillation. Methods and Results A total of 728 questionnaires were mailed
to physicians with the intention of studying 'theoretical' compliance to practice
guidelines. A retrospective evaluation of 200 records from consecutive patients
hospitalized with atrial fibrillation was performed in order to verify 'actual'
compliance to guidelines. The response rate to the questionnaires was 68%, More
than 94% of the physicians stated that patients with risk factors for
thromboembolic complications and chronic atrial fibrillation should receive
long-term warfarin treatment. Of evaluated records. 108 patients were in chronic
atrial fibrillation with at least one risk factor for stroke. and with no known
contraindication to warfarin. In this group, only 40% received warfarin.
Moreover. several other discrepancies were detected as regards the use of
antiarrhythmic therapy. Conclusion This study reveals a clear discrepancy
between recommendations in guidelines and actual practice in patients with atrial
fibrillation. The most important finding was a significant under use of
thromboembolic prophylaxis in patients at high risk for such events.
Implementation and the study of adherence to management guidelines on atrial
fibrillation need to be carefully reviewed by surveys of actual clinical practice in
order to establish reasonable therapeutic quality. (C) 2001 The European Society
of Cardiology
Keywords: adherence/antiarrhythmic
treatment/anticoagulation/ANTICOAGULATION/atrial fibrillation/chronic atrial
fibrillation/clinical
practice/COMMUNITY/complications/ENGLAND/evaluation/fibrillation/guidel
ine/guidelines/HEART/high risk/LEFT-VENTRICULAR
DYSFUNCTION/management guidelines/PHYSICIAN VARIATION/practice
guidelines/PREVENTION/PROPHYLAXIS/risk/risk factor/risk
factors/stroke/TACHYCARDIA/therapy/THROMBOEMBOLIC
COMPLICATIONS/treatment/TRIAL/use/WARFARIN
Eikelboom, J.W., Weitz, J.I., Budaj, A., Zhao, F., Copland, I., Maciejewski, P., Johnston,
M. and Yusuf, S. (2002), Clopidogrel does not suppress blood markers of
coagulation activation in aspirin-treated patients with non-ST-elevation acute
coronary syndromes. European Heart Journal , 23 (22), 1771-1779.
Abstract: Aims The Clopidogrel in Unstable angina to prevent Recurrent Events (CURE)
Study demonstrated that clopidogrel plus aspirin was superior to aspirin alone for
prevention of recurrent vascular events in patients with acute coronary
syndromes. The aim of this study was to compare the effect of these two
regimens on biochemical markers of platelet and coagulation activation. Methods
and Results We studied 485 patients with non-ST-elevation acute coronary
syndrome who were randomized to clopidogrel (300 mg loading dose followed
by 75 mg daily) or placebo for a period of 3-12 months. All patients also
received aspirin (recommended dose 75325 mg daily). Blood levels of P- selectin,
prothrombin fragment F1.2, D-dimer, and von Willebrand factor were measured
at baseline, day 7 (or hospital discharge), and at day 30 after randomization.
Patients receiving clopidogrel Plus aspirin compared with aspirin alone had
similar baseline geometric mean plasma levels of P-selectin (50-2 vs 51.7
ng.ml(-1), P=0.45), prothrombin fragment F1.2 (1.13 vs 1.12 nmol.l(-1), P=0.94),
D-dimer (467 vs 460 ng. ml(- 1), P=0.85), and von Willebrand factor levels (1.89
vs 1.85 U. ml(-1), P=0.59) and there also were no significant differences at day 7,
or day 30. However, compared with baseline, there was a significant rise in
prothrombin fragment F1.2 at day 7 (from 1.12 to 1-39 nmol.l(-1), P1 mm (RR = 1.90; 95% Cl:
1.18-3.05), and left ventricular (LV) dysfunction (watt motion index 25
emboli detected in any 10 min period or those with emboli that distorted the
arterial waveform were commenced on an incremental infusion of dextran 40.
Results: the majority of patients destined to embolise will do so within the first 2
postoperative hours. Dextran therapy was instituted in nine patients (5%) and
rapidly controlled this phase of embolisation although the dose had to be
increased in three (33%). No patient suffered a postoperative carotid thrombosis
but one suffered a minor stroke on day 5 and was found to have profuse
embolisation on TCD; high dose dextran therapy was again instituted, the
embolus count rate fell rapidly and he made a good recovery thereafter. Overall,
the death and disabling stroke rate was 1.2% and the death/any stroke rate was
2.4%. Conclusion: three hours of postoperative TCD monitoring is as effective as
6 h in the prevention of postoperative carotid thrombosis
Keywords: ARTERY THROMBOSIS/carotid/carotid
endarterectomy/Dextran/DIAGNOSIS/Doppler/emboli/embolus/ENDARTEREC
TOMY/England/monitoring/perioperative
stroke/prevention/risk/stroke/TCD/therapy/thrombosis/transcranial
Doppler/ULTRASOUND
Leppala, J.M., Virtamo, J. and Heinonen, O.P. (1999), Validation of stroke diagnosis in
the National Hospital Discharge Register and the Register of Causes of Death in
Finland. European Journal of Epidemiology, 15 (2), 155-160.
Abstract: The validity of stroke diagnosis in the National Hospital Discharge Register
and the Register of Causes of Death was examined among 546 middle-aged men
in Finland. The subjects were cases of cerebrovascular diseases of the
Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study and identified by
record linkage to the registers. In all, 375 events with cerebrovascular disease as
hospital discharge diagnosis and 218 events with cerebrovascular disease as the
underlying cause of death were reviewed using specific criteria modified from
the classifications of the National Survey of Stroke and the WHO MONICA
Study. For hospital stroke diagnoses, there was agreement on diagnosis for all
strokes in 90%, for subarachnoid hemorrhage in 79%, intracerebral hemorrhage
in 82%, and cerebral infarction in 90%. The respective agreement rates for stroke
as the underlying cause of death were 97%, 95%, 91%, and 92%. The data were
insufficient for review in 1% and 3% of the stroke events, respectively. Age,
observation year and trial supplementation with alpha -tocopherol or
beta-carotene had no effect on validity. In conclusion, the validity of stroke
diagnosis was good in registers of hospital diagnoses and causes of death
justifying their use for endpoint assessment in epidemiological studies
Keywords: ACCURACY/beta carotene/cerebral/cerebral
infarction/cerebrovascular/cerebrovascular disease/cerebrovascular
diseases/diagnosis/diseases/Finland/hemorrhage/hospital/hospital discharge
register/infarction/intracerebral
hemorrhage/linkage/men/NETHERLANDS/register of causes of
death/review/stroke/subarachnoid hemorrhage/validation/validity
Wandell, P.E. (1999), Drug use in patients with atrial fibrillation in Swedish primary
health care: a comparison 5 years apart. European Journal of Clinical
Pharmacology, 55 (4), 333-337.
Abstract: Objective: A study of the utilization of drugs, particularly antithrombotic
agents and anti-arrhythmic agents, in patients with atrial fibrillation (AF) with
changes over time in primary health care. Methods: Surveys were done of
patients with AF over 1-year periods, 1992-1993 (n = 135) and 1997-1998 (n =
144), respectively, at a community health centre in Stockholm County.
Information on the prescription of drugs was obtained from the computerized
medical records. Results: The rate of antithrombotic treatment increased from
62.2% to 79.2% (P = 0.001), owing to an in creased use of antiplatelet agents
from 36.3% to 47.9% (P = 0.037), while the use of anticoagulant agents was on
an equal level (25.9% vs 31.3%). The use of any antithrombotic agent in the
primary prevention of thromboembolic events in AF increased from 20.0% to
41.0% (P = 0.000). The mean doses of aspirin, when used, increased from 123 to
142 mg (P = 0.036, one-tailed student's t-test). The use of sotalol also increased,
from 14.2% to 25.2% (P = 0.024). Conclusions: Despite the increased use of
antithrombotic agents, there is still an under-prescription of anticoagulant agents
and of doses of aspirin
Keywords:
AF/anticoagulant/anticoagulants/ANTICOAGULATION/antiplatelet/antiplatelet
agents/antithrombotic/aspirin/atrial
fibrillation/COST-EFFECTIVENESS/drugs/fibrillation/health/health
care/MANAGEMENT/NEW-YORK/prevention/primary/primary health
care/primary prevention/STROKE PREVENTION/THERAPY/thromboembolic
events/treatment/WARFARIN
Akyuz, A., Bolayir, E., Dener, S., Topalkara, K. and Topaktas, S. (1999), The effect of
aspirin, ticlopidine and their low-dose combination on platelet aggregability in
acute ischemic stroke: a short duration follow-up study. European Journal of
Neurology, 6 (1), 57-61.
Abstract: We investigated the effects of aspirin (300 mg/d), ticlopidine (500 mg/d) and
their low-dose combination (aspirin 100 mg/d plus ticlopidine 250 mg/d) on the
platelet aggregability using the Wu and Hoak method. Each treatment group
consisted of 25 patients with acute ischemic stroke. Platelet aggregation ratios
(PAR) were measured on the 1St (before treatment), 10th and 90th days in the
treatment groups and compared with those of 25 control cases. On the first day,
comparison of PAR in each treatment group with the control was significant,
while the differences between treatment groups were not significant. On the 90th
day, differences of PAR between aspirin and control were significant, but
differences between the other treatment groups and the control group were not
significant, indicating a lower anti-aggregant efficacy of aspirin. Our study
suggests that PAR determination can be used to assess the efficacy of
anti-aggregant drugs. Our crude observation also suggests a higher
anti-aggregant efficacy of ticlopidine, and aspirin plus ticlopidine, than aspirin.
In addition, proper doses of aspirin plus ticlopidine may be a good choice for the
prevention of ischemic stroke. Further studies are required to assess whether
PAR determination could be useful for assessing patients at risk of stroke, and
for drug selection for the prevention of stroke. fur J Neurol 6:57-61 (C) 1999
Lippincott Williams & Wilkins
Keywords: ACETYLSALICYLIC-ACID/acute/acute ischemic
stroke/AGGREGATION/aspirin/aspirin plus
ticlopidine/CEREBRAL-ISCHEMIA/control/drugs/ischemic/ischemic
stroke/platelet
aggregation/prevention/risk/stroke/THERAPY/ticlopidine/treatment
Hoffmann, M. and Robbs, J. (1999), Carotid endarterectomy after recent cerebral
infarction. European Journal of Vascular and Endovascular Surgery, 18 (1),
6-10.
Abstract: Objectives: whether timing of carotid endarterectomy (CEA) was significant in
terms of morbidity and mortality for significant carotid stenosis.
Design/materials: comparison was made of patients requiring CEA performed in
less than 6 weeks or more than 6 weeks after their stroke. To enable
quantification in terms of clinical presentation, aetiology and handicap,
standardised scales were incorporated into the registry protocol. A postoperative
event was considered to have occurred if a stroke or death from any cause took
place within one month of surgery. Results: patients with CEA (n = 1005) and
stroke numbered 232. Comparison was made of the early (n = 86) and late
surgery groups (n = 121) in terms of demography risk factors, clinical findings,
quantitative neurological deficit, handicap and degree of carotid stenosis with no
significant differences found except for race. There was no difference in
morbidity ansi mortality (M+M) between the early and late surgery group. The
relative risk (RR) of >6 week group was 1.90 (CI: 0.52-6.94) with an odds ratio
of 1.96 (CI: 0.45-9.63). There is, therefore, a trend of a two-fold risk of MM in
the >6 week group. Conclusion: we propose that the historical 6-week wait
period for CEA post stroke is outdated
Keywords: ATHEROSCLEROSIS/carotid/carotid endarterectomy/carotid
stenosis/cerebral/cerebral
infarction/CLASSIFICATION/endarterectomy/ENGLAND/infarction/ISCHEMI
C STROKE/morbidity/mortality/PREVENTION/race/relative risk/risk/risk
factors/STENOSIS/stroke/SURGERY/timing/TRIAL
Amaro, P., Nunes, A., Macoas, F., Ministro, P., Baranda, J., Cipriano, A., Martins, I.,
Rosa, A., Pimenta, I., Donato, A. and Freitas, D. (1999), Ticlopidine-induced
prolonged cholestasis: a case report. European Journal of Gastroenterology &
Hepatology, 11 (6), 673-676.
Abstract: We report a case of ticlopidine-induced prolonged cholestasis in a 60-year-old
man with no previous hepatobiliary disease who presented with sudden right
upper abdominal pain, jaundice and pruritus three months after starting
ticlopidine therapy. Other drugs taken by the patient were not considered
probable causes, The diagnostic evaluation showed no biliary obstruction and
other possible causes of intra-hepatic cholestasis were excluded, The liver biopsy
showed a cholestatic hepatitis with bile duct damage. The disease ran a severe
and protracted course, but symptoms and jaundice eventually subsided five
months after drug withdrawal, More than a year later, relevant abnormalities of
liver function tests consistent with anicteric cholestasis still persist, fulfilling
criteria for a minor form of drug-induced prolonged cholestasis. This syndrome
has been reported infrequently in relation to several drugs, mainly
chlorpromazine, and only once with ticlopidine. Eur J Gastroenterol Hepatol
11:673-676. (C) 1999 Lippincott Williams & Wilkins
Keywords: BLOOD/cholestasis/DISORDERS/drug-induced prolonged
cholestasis/drugs/evaluation/HEPATITIS/JAUNDICE/pain/PREVENTION/STR
OKE/therapy/ticlopidine
Boysen, G. and Porsdal, V. (1999), The value of stroke prophylaxis. European Journal
of Neurology, 6 S25-S29.
Abstract: Primary prevention of stroke goes along two lines. By mass strategy society
promotes healthier life styles and by high risk strategy individuals with certain
risk factors are indentified and specific prophylactic measures instituted.
Treatment of arterial hypertension reduces stroke risk. Antihypertensive
treatment by diuretics is more cost effective than other antihypertensive drugs,
and more so in the elderly than in the middle aged. In patients with non-vascular
atrial fibrillation (NVAF) and a high risk of ischaemic stroke anticoagulation is
cast saving provided the frequency of intracerebral haemorrhage is low. In low
risk NVAF patients aspirin is to be preferred, both clinically and economically.
In secondary stroke prevention in patients without a cardioembolic source aspirin
as well as the combination of aspirin and dipyridamole are cost saving. Eur J
Neurol 6 (suppl 2):S25-S29 (C) 1999 Lippincott Williams & Wilkins
Keywords: aged/anticoagulation/antihypertensive drugs/arterial
hypertension/ASPIRIN/atrial fibrillation/ATRIAL-FIBRILLATION/carotid
endarterectomy/cerebrovascular
disease/cost/COST-EFFECTIVENESS/dipyridamole/drugs/elderly/ENGLAND/f
ibrillation/hypertension/intracerebral haemorrhage/ischaemic
stroke/prevention/PREVENTION/prophylaxis/risk/risk factors/stroke/stroke
prevention/treatment
Simons, P.C.G., Algra, A., van de Laak, M.F., Grobbee, D.E. and van der Graaf, Y.
(1999), Second Manifestations of ARTerial disease (SMART) study: Rationale
and design. European Journal of Epidemiology, 15 (9), 773-781.
Abstract: The Second Manifestations of ARTerial disease (SMART) study is a
single-centre prospective cohort study among patients, newly referred to the
hospital with (1) clinically manifest atherosclerotic vessel disease, or (2) marked
risk factors for atherosclerosis. The first objectives of the SMART study are to
determine the prevalence of concomitant arterial disease at other sites, and risk
factors in patients presenting with a manifestation of arterial disease or vascular
risk factor and to study the incidence of future cardiovascular events and its
predictors in these high-risk patients. At least 1000 patients, aged 18 to 80 years,
will undergo baseline examinations, including a questionnaire on cardiovascular
disease, height, weight and blood pressure measurements, blood tests for glucose,
lipids, creatinine and homocysteine, urinary tests for microproteinuria, resting
twelve-lead electrocardiogram, ultrasound scanning of the abdominal aorta,
kidneys and the carotid arteries, measurements of common carotid intima-media
thickness and arterial stiffness, and a treadmill test to assess atherosclerosis of
the leg arteries. Abnormal findings are reported to the treating specialist and
general practitioner with a treatment suggestion according to current practice
guidelines. Recruitment and baseline examinations began in September 1996. All
cohort members will be followed for clinical cardiovascular events for a
minimum of three years. In the scope of secondary prevention, the study is
expected to support the design of solid based screening and treatment
programmes and evidence-based cardiovascular medicine to reduce morbidity
and mortality, and improve quality of life, in high-risk patients
Keywords: aged/ASYMPTOMATIC CAROTID DISEASE/atherosclerosis/blood
pressure/cardiovascular/cardiovascular disease/cardiovascular
events/CARDIOVASCULAR-DISEASE/carotid/carotid arteries/cohort
study/design/glucose/guidelines/hospital/incidence/INTEROBSERVER
AGREEMENT/INTIMA-MEDIA
THICKNESS/lipids/morbidity/MORTALITY/MYOCARDIAL-
INFARCTION/Netherlands/predictors/prevention/quality of life/risk/RISK
FACTOR/risk factors/secondary prevention/STROKE
PATIENTS/SURGICAL-TREATMENT/treatment/vascular/VASCULAR-DISE
ASE
Culebras, A. (1999), Stroke: the saving grace of neurology. European Journal of
Neurology, 6 S31-S35.
Abstract: Stroke is the third leading cause of morbidity and mortality. Prevention and
acute stroke intervention have improved the functional, neurologic and quality of
life outcomes of stroke victims while reducing mortality. The gold standard
establishes the neurologist as the leading physician of the infrastructure required
for best care management in stroke. The future calls for a shift of neurologic
workforces towards stroke care. This may require retraining of current
neurologists and a structured expansion of the subspecialty of stroke neurology.
Eur J Neurol 6 (suppl 2):S31-S35 (C) 1999 Lippincott Williams & Wilkins
Keywords: acute/clinical
pathway/DIAGNOSIS/ENGLAND/HEALTH/ICD10-NA/LENGTH/morbidity/
MORTALITY/neurologist/neurology/outcome research/quality of
life/RANDOMIZED CONTROLLED TRIAL/STAY/stroke/stroke team/stroke
unit/thrombolysis/UNIT
Woo, J. (2000), Relationships among diet, physical activity and other lifestyle factors
and debilitating diseases in the elderly. European Journal of Clinical Nutrition,
54 S143-S146.
Abstract: Diet and physical activity are two major lifestyle factors that play a role in the
prevention or management of debilitating conditions affecting older people. Both
under- and overnutrition predispose to diseases. Low sodium and high potassium
intakes, as well as the consumption of fruits and vegetables are associated with a
reduction of hypertension and diseases arising from hypertension such as stroke
and dementia. Dietary patterns (consumption of quantity and types of fats,
cholesterol, vegetable oils, fish) are important in the prevention of coronary heart
disease. Calcium and vitamin D intakes are important factors in the development
of osteoporosis, while various dietary factors have been linked to the
development of cancer. Physical activity is important in the prevention of
functional decline and increased survival, reduced incidence of falls and fractures,
and has various cardiovascular health benefits. Apart from prevention of diseases,
exercise also has an important role in improving function in some chronic
diseases such as heart failure or chronic obstructive pulmonary disease. Both diet
and exercise interact, so that public health recommendations often take the form
of lifestyle modification advice in the prevention of disease and disability
Keywords: aging/BLOOD-PRESSURE/BODY-MASS INDEX/BONE
LOSS/CALCIUM/cancer/cardiovascular/China/Chinese/cholesterol/coronary
heart disease/CORONARY
HEART-DISEASE/dementia/development/diet/dietary
intake/disability/disease/diseases/elderly/ENGLAND/exercise/fats/fractures/GE
NERAL MEDICAL PATIENTS/health/heart/heart disease/heart failure/Hong
Kong/hypertension/incidence/lifestyle/lifestyle
modification/osteoporosis/physical activity/POSTMENOPAUSAL
WOMEN/potassium/prevention/public health/RANDOMIZED CONTROLLED
TRIAL/RISK/sodium/stroke/TAI-CHI/vegetable/vitamin D
Gao, M.Y., Sillesen, H.H., Lorentzen, J.E. and Schroeder, T.V. (2000), Eversion carotid
endarterectomy generates fewer microemboli than standard carotid
endarterectomy. European Journal of Vascular and Endovascular Surgery, 20
(2), 153-157.
Abstract: Objectives: to test whether the occurrence of microembolism differed between
eversion and standard carotid endarterectomy (CEA). Design: prospective,
non-randomised transcranial Doppler(TCD) monitoring study of 61 patients.
Materials and methods: eversion CEA was performed in 27 and standard CEA in
34 patients. Surgery was performed under general anaesthesia. Three (5%)
patients had a shunt inserted based on continuous EEG monitoring. Continuous
middle cerebral artery TCD monitoring (EME, TC-4040) was performed
intraoperatively and for 45 min postoperatively on day 1, day 2-3, day 4-5 and
after 3 months. Unidirectional signals lasting >25 ms, having intensities of >9 dB
were considered to represent embolic events. Results: intraoperative embolic
events were detected in 50 (93%) of 54 patients in whom successful
intraoperative TCD monitoring was achieved. Events occurred most frequently
immediately following clamp release (85%), without difference between the two
techniques. Embolic events were encountered postoperatively in four (15%) and
16 (48%) patients having eversion and standard CEA, respectively (p 90%. These effects were partially, to
nearly completely, attenuated by the addition of MgCl2 to the infusate containing
added ethanol. Of special interest was the observation that attenuation of the
vasoconstrictive effect of ethanol by Mg2+ persisted despite a subsequent
ethanol challenge without added Mg2+. The results obtained demonstrate that,
depending on dose, ethanol can produce prompt and severe vasoconstriction of
the intact cerebral microcirculation and that infusion of moderate doses of Mg2+
can largely attenuate and prevent this response. We conclude that appreciable,
graded changes in cerebral cytochrome oxidase aa(3), blood volume and the state
of hemoglobin occur at minimal tissue levels of ethanol which can be modulated
by Mg2+. (C) 2002 Elsevier Science B.V. All rights reserved
Keywords:
acute/administration/ALCOHOL/alcohol/BLOOD-FLOW/brain/cerebral/cerebra
l blood flow/cerebral microcirculation/cytochrorne
oxidase/DAMAGE/fiber/HEAD TRAUMA/hemoglobin/HEMORRHAGIC
STROKE/hernoglobin/IN-VIVO P-
31-NMR/magnesium/MG2+/microcirculation/NEAR-INFRARED
SPECTROSCOPY/NETHERLANDS/optical spectroscopy/prevention/rat/RAT
HIPPOCAMPUS/rats/stroke/TRAUMATIC BRAIN INJURY/vascular
Ness, A.R., Hughes, J., Elwood, P.C., Whitley, E., Smith, G.D. and Burr, M.L. (2002),
The long-term effect of dietary advice in men with coronary disease: follow-up
of the Diet and Reinfarction trial (DART). European Journal of Clinical
Nutrition, 56 (6), 512-518.
Abstract: Objective: To assess the long-term effect of dietary advice on diet and
mortality after a randomised trial of men with a recent history of myocardial
infarction. Design: Questionnaire survey and mortality follow-up after a trial of
dietary advice. Setting: Twenty-one hospitals in south Wales and south-west
England. Subjects: Former participants in the Diet and Reinfarction Trial. Main
outcome measures: Current fish intake and cereal fibre intake. All-cause
mortality, stroke mortality and coronary mortality. Results: By February 2000,
after 21 147 person years of follow-up, 1083 (53%) of the men had died.
Completed questionnaires were obtained from 879 (85%) of the 1030 men alive
at the beginning of 1999. Relative increases in fish and fibre intake were still
present at 10 y but were much smaller. The early reduction in all-cause mortality
observed in those given fish advice (unadjusted hazard 0.70 (95% Cl 0.54, 0.92))
was followed by an increased risk over the next 3 y (unadjusted hazard 1.31
(95% Cl 1.01, 1.70). Fat and fibre advice had no clear effect on coronary or
all-cause mortality. The risk of stroke death was increased in the fat advice
group- the overall unadjusted hazard was 2.03 (95% Cl 1.14, 3.63). Conclusions:
In this follow-up of a trial of intensive dietary advice following myocardial
infarction we did not observe any substantial long-term survival benefit. Further
trials of fish and fibre advice are feasible and necessary to clarify the role of
these foods in coronary disease
Keywords: all-cause mortality/CARDIOVASCULAR-DISEASE/cereal/coronary
disease/coronary heart disease/DEATH/diet/dietary
advice/disease/England/fat/fibre/fish/HEART-
DISEASE/history/hospitals/infarction/LONDON/MECHANISMS/men/mortality
/myocardial/myocardial infarction/outcome/POLYUNSATURATED
FATTY-ACIDS/PREVENTION/randomised controlled
trial/RECURRENCE/risk/STROKE/stroke/stroke
mortality/survey/survival/trial/trials
Munts, A.G., Mess, W.H., Bruggemans, E.F., Walda, L. and Ackerstaff, R.G.A. (2003),
Feasibility and reliability of on-line automated microemboli detection after
carotid endarterectomy. A transcranial Doppler study. European Journal of
Vascular and Endovascular Surgery, 25 (3), 262-266.
Abstract: Objectives: recently, a new algorithm for transcranial Doppler (TCD)
ultrasound detection of microembolic signals (MES) was developed. In the
present study, we investigated its on-line performance in TCD monitoring after
carotid endarterectomy (CEA) and assessed off-line its accuracy in detecting
MES. Materials and Methods: first, the feasibility of MES detection in TCD
monitoring after CEA in a routine clinical setting was evaluated in 50 patients.
Second, to test the reliability of the software a 2-h digital audio study tape was
made and analysed by the algorithm and five human experts, The "gold standard"
was defined as the agreement between human experts: a MES was considered to
be present if at least three human observers agreed. Results: TCD monitoring for
emboli detection after CEA was well tolerated by the patients and could be
performed reliably. In the study tape, the human gold standard detected 107 MES,
with 93 MES having an intensity of greater than or equal to7 dB. The software
detected 81 and 77 MES, respectively. Using the 7 dB intensity threshold, the
software had no false positives and 16 false negatives. The kappa value between
the human gold standard and the software was 0.91, the proportion of specific
agreement was 0.83. Conclusions: the tested algorithm provides a reliable
method for automated on- line microemboli detection after CEA. This Makes
monitoring of the effectiveness of antiplatelet agents in the prevention of stroke
after CEA more practicable
Keywords: antiplatelet/antiplatelet agents/automated emboli detection/carotid/carotid
endarterectomy/cerebral embolism/CEREBRAL
MICROEMBOLISM/detection/Doppler/emboli/emboli detection/EMBOLIC
SIGNALS/endarterectomy/ENGLAND/human/intensity/interobserver
agreement/LONDON/microemboli/monitoring/Netherlands/prevention/STROKE
/TCD/transcranial/transcranial Doppler/ultrasonography/ultrasound
Bendixen, B.H. and Adams, H.P. (1996), Ticlopidine or clopidogrel as alternatives to
aspirin in prevention of ischemic stroke. European Neurology, 36 (5), 256-257
Keywords: aspirin/ischemic stroke/MULTICENTER/prevention/stroke
Sivenius, J., Diener, H.C., Bendixen, B.H., Adams, H.P., Barnett, H.J.M. and Meldrum,
H.E. (1996), Upcoming alternatives to aspirin for antiaggregant therapy in stroke
prevention. European Neurology, 36 (5), 253-256
Keywords: aspirin/CEREBRAL-ISCHEMIA/CONTROLLED
TRIAL/DIPYRIDAMOLE/DIVERSITY/HETEROGENEITY/prevention/SECO
NDARY PREVENTION/stroke/stroke prevention
Barnett, H.J.M. and Meldrum, H.E. (1996), Critique of two putative therapies in stroke
prevention using platelet inhibitors. European Neurology, 36 (5), 258-259
Keywords: ASPIRIN/DRUGS/prevention/SECONDARY PREVENTION/stroke/stroke
prevention/TICLOPIDINE/TRIAL
Zhen, Q. (1998), A review of therapeutic potentials in ischemic stroke. European
Neurology, 39 21-25.
Abstract: Stroke is one of the leading causes of death in the world. There are as yet no
effective treatments for the ischemic cerebral lesion itself. Nevertheless, five
potential therapeutic objectives can be identified. For cerebral infarction, the best
treatment is prevention, including targeted preventive treatments for specific
subsets of patients or individuals with different risk factors. Incidence rates and
mortality rates of stroke have been successfully reduced in certain developed
countries by adoption of a public health approach to the prevention and control
of risk factors. To rescue the still viable but injured nerve cells, within the
ischemic penumbra, effective therapy should be begun at the earliest possible
time. Measures to halt or reverse programmed cell death, to enhance the intrinsic
autoprotective and repair mechanisms, are under active study. The existence of
down- regulated brain regions, where normal nerve cells have far less activities
to perform due to interruption of information exchange with the infarct area, and
the possibility to reactivate them are worthy of attention
Keywords: apoptosis/autoprotective mechanisms/cerebral/cerebral infarction/cerebral
ischemia/control/down-regulated brain
regions/EXPRESSION/health/infarction/ischemic penumbra/ischemic
stroke/mortality/NERVE GROWTH-FACTOR/penumbra/prevention/prevention
and control/RAT/risk/risk factors/stroke/therapy/TRANSIENT FOREBRAIN
ISCHEMIA/treatment
Marti-Fabregas, J., Valencia, C., Pujol, J., Garcia-Sanchez, C. and Marti-Vilalta, J.L.
(2002), Fibrinogen and the amount of leukoaraiosis in patients with symptomatic
small-vessel disease. European Neurology, 48 (4), 185-190.
Abstract: We investigated whether there is a direct correlation between plasma
fibrinogen levels and the amount of leukoaraiosis (LA) in patients with
symptomatic small-vessel disease. The study included 28 patients: 12 with a
first-ever lacunar infarction (U) and 16 with Binswanger's disease (BD). The
mean age was 71 years (SD 8.6), and 21 were men. For each patient, we recorded
demographic data, vascular risk factors and the results of blood chemistry
analysis including fibrinogen (g/l), hematocrit (decimal fraction) and total serum
proteins (g/l). A cerebral MR scan was performed in each patient and an LA
score was obtained by an investigator blind to clinical data, using a
serniquantified scale in six areas of each cerebral hemisphere (0-4 points in each
area, total scoring range 0-48 points). Results: The mean (SD) for the LA score
was 18.9 (10.7) and for plasma fibrinogen 3.97 (1.1). Pearson's and Spearman's
correlation coefficients between fibrinogen and LA score were 0.43 (p = 0.02)
and 0.49 (p = 0.007), respectively. Multiple- regression analysis between groups
(LI or BD) and fibrinogen versus LA score showed the strongest association for
the BD group (p = 0.014) and a direct relation with fibrinogen (p = 0.018). No
statistically significant association was found between LA score and age, sex,
any vascular risk factor, hematocrit or total serum protein. Conclusion: There is a
significant correlation between plasma fibrinogen levels and the amount of LA in
patients with symptomatic cerebral small- vessel disease. This result suggests
that fibrinogen may be involved in the pathophysiology of LA in these patients.
Copyright (C) 2002 S. Karger AG, Basel
Keywords: age/AUSTRIAN STROKE PREVENTION/Binswanger's
disease/BINSWANGERS-DISEASE/CARDIOVASCULAR
EVENTS/cerebral/DEMENTIA/disease/fibrinogen/hematocrit/HYPERVISCOSI
TY/infarction/lacunar
infarction/leukoaraiosis/men/MR/pathophysiology/PLASMA-FIBRINOGEN/ris
k/risk factor/risk factors/RISK-FACTORS/serum/sex/Spain/SUBCORTICAL
ARTERIOSCLEROTIC ENCEPHALOPATHY/TRANSIENT ISCHEMIC
ATTACKS/vascular/vascular risk/vascular risk factors/WHOLE-BLOOD
VISCOSITY
Ruff, L.K., Volmer, T., Nowak, D. and Meyer, A. (2000), The economic impact of
smoking in Germany. European Respiratory Journal, 16 (3), 385-390.
Abstract: Smoking is a high-risk behaviour affecting health and economic welfare of
society. Thus it is important to quantify the economic burden smoking places on
social institutions in Germany. Approximately 33.4% of the male and 20.4% of
the female population are current smokers. This study investigates the health care
costs of smoking based on 1996 figures, focusing on the seven most frequent
diseases associated with the inhalation of tobacco smoke: chronic obstructive
pulmonary disease (COPD, international classification of diseases (ICD)
490-491); lung cancer (ICD 162); stroke (ICD 434-438); coronary artery disease
(ICD 410-414); cancer of the mouth and larynx (ICD 140-149, 161) and
artherosclerotic occlusive disease (ICD 440). A data search was carried out on
MEDLINE, the German Institute for Medical Documentation and Information,
and the Internet as well as in databases of health insurance companies and the
German Federal institute of statistics. Direct and indirect casts mere calculated
separately. The results estimate the total smoking related health care costs
(attributable fraction due to smoking) for COPD to be 5.471 billion EURO (73%),
for lung cancer 2.593 billion EURO (89%), for cancer of the mouth and larynx
0.996 billion EURO (65%), for stroke 1.774 billion EURO (28%), for coronary
artery disease 4.963 billion EURO (35%) and for artherosclerotic occlusive
disease 0.761 billion EURO (28%). The economic burden of smoking related
health care costs for Germany is 16.6 billion EURO. Smoking is therefore
responsible for 47% of the overall costs of these diseases (35.2 billion EURO). In
the view of the high costs for smoking, of which almost 50% are due to
respiratory disease, pneumologists should enhance their effort in primary,
secondary and tertiary prevention
Keywords:
CANADA/cancer/CIGARETTE-SMOKING/CONSEQUENCES/COPENHAGE
N/coronary artery
disease/COSTS/DEATH/DENMARK/diseases/Germany/HEALTH/health
care/health care costs/high risk/lung
cancer/NEW-YORK-STATE/population/prevention/primary/smoking/stroke/tob
acco
Weisburger, J.H. (1996), Human protection against non-genotoxic carcinogens in the US
without the Delaney clause. Experimental and Toxicologic Pathology, 48 (2-3),
201-208.
Abstract: Cancers of many types are major chronic diseases with a high fatality rate and
a high cost to society. In the USA, the Delaney Clause was implemented in 1958
because the public believed that many cancers stem from food additives and food
contaminants. In the intervening years, research has provided key information
about the mechanisms of carcinogenesis and demonstrated that there are two
major classes of carcinogens, genotoxic and non-genotoxic. Two case reports are
presented, of sodium saccharin and ethylenebisdithio-carbamates that were
banned based on the Delaney Clause in an unjustified manner, based on the
underlying mechanisms not relevant for non- genotoxic carcinogens. Also, the
causes of major cancers have been discovered. Most cancers are associated with
lifestyle, specifically tobacco and excessive alcohol use, inappropriate nutritional
traditions, and lack of exercise. These lifestyle components involve now known
genotoxic carcinogens and importantly, nongenotoxic carcinogens. The effect of
non- genotoxic carcinogens is highly dose dependent and also reversible upon
lowering the dose below a threshold. Thus, it is quite possible to lower human
cancer risk, and also the risk of related chronic diseases such as coronary heart
disease, hypertension and stroke, adult on-set diabetes, by proper lifestyle
adjustments. Clearly, the Delaney Clause plays no role in disease prevention
Keywords: CANCER/cancer etiology/cancer
prevention/carcinogenesis/carcinogens/CELL-CULTURES/CHEMICALS/coron
ary heart disease/Delaney Clause/diseases/exercise/genotoxic
carcinogens/heart/hypertension/INDUCTION/lifestyle/LIVER/MICE/non-genot
oxic carcinogens/nutrition/prevention/RATS/risk/stroke/tobacco
Rissanen, T., Voutilainen, S., Nyyssonen, K. and Salonen, J.T. (2002), Lycopene,
atherosclerosis, and coronary heart disease. Experimental Biology and Medicine,
227 (10), 900-907.
Abstract: Diets rich in fruits and vegetables containing carotenoids have been of interest
because of their potential health benefit against chronic diseases such as
cardiovascular diseases (CVD) and cancer. Interest particularly in lycopene is
growing rapidly following the recent publication of epidemiological studies that
have associated high lycopene levels with reductions in CVD incidence. Two
studies were conducted. In the first one, we examined the role of lycopene as a
risk-lowering factor with regard to acute coronary events and stroke in the
prospective Kuopio Ischemic Heart Disease Risk Factor (KIHD) Study. The
subjects were 725 middle-aged men free of coronary heart disease and stroke at
the study baseline. In a Cox's proportional hazards' model adjusting for
covariates, men in the lowest quartile of serum levels of lycopene had a 3.3-fold
(P 70% symptomatic extracranial carotid stenosis
Keywords: ASPIRIN/RANDOMIZED TRIAL/TICLOPIDINE
Dalen, J.E. (1994), Atrial-Fibrillation - Reducing Stroke Risk with Low-Dose
Anticoagulation. Geriatrics, 49 (5), 24-&.
Abstract: Atrial fibrillation (AF) is the primary disorder predisposing patients to
systemic embolism. Its incidence increases with age, rising from 2 to 4% of
Americans aged 60 to 12% of women and 16% of men over age 75. AF is
commonly associated with hypertension and coronary heart disease-particularly
congestive heart failure. Five trials published since 1989 showed that giving oral
anticoagulants to patients with AF can safely and effectively reduce the risk of
embolic stroke. Long-term warfarin therapy is recommended by the American
College of Chest Physicians for patients with AF who have associated
cardiovascular disease, thyrotoxicosis, or are age 60 or older. The ACCP
recommends an INR range of 2.0 to 3.0, which is as effective as high-intensity
treatment but less likely to cause bleeding
Keywords: AF/aged/anticoagulants/cardiovascular
disease/fibrillation/GERIATRIC/heart/hypertension/incidence/PREVENTION/ri
sk/stroke/THERAPY/treatment/trials/WARFARIN/women
Fiore, L.D. (1996), Anticoagulation: Risks and benefits in atrial fibrillation. Geriatrics,
51 (6), 22-&.
Abstract: Anticoagulation with warfarin has been shown to be effective in preventing
ischemic stroke in patients with atrial fibrillation. However, physicians have
been reluctant to prescribe this therapy for patients age 60 and older because of
the associated risk of bleeding during antithrombotic therapy. Four clinical
features independently increase the risk of stroke in individuals with atrial
fibrillation: previous stroke or transient ischemic attach, diabetes, history of
hypertension, and advancing age. In individual patients, bleeding complications
can be reduced by eliminating loading doses, monitoring therapy frequently
during the initiation phase, targeting lower INRs, recognizing the potential for
drug interactions, and identifying clinical risk factors
Keywords: atrial fibrillation/BLEEDING
COMPLICATIONS/fibrillation/history/hypertension/ischemic stroke/ORAL
ANTICOAGULANTS/OUTPATIENTS/PREDICTION/PREVENTION/PROTH
ROMBIN TIME/risk factors/STROKE/THERAPY/THROMBOEMBOLIC
COMPLICATIONS/WARFARIN
Reddy, M.P. and Reddy, V. (1997), After a stroke: Strategies to restore function and
prevent complications. Geriatrics, 52 (9), 59-&.
Abstract: Mortality and morbidity are high in elderly stroke patients. Early mobilization
and prevention of stroke-related complications improve their ability to participate
in a more intense and comprehensive rehabilitation program. An interdisciplinary
approach to stroke rehabilitation restores functional loss, improves quality of life,
and decreases long- term economic costs. Important parts of stroke rehabilitation
include patient and family education, treatment of stroke- related complications,
and prevention of recurrent stroke. A healthy and caring spouse, continence of
bladder and bowel, and ability to feed oneself are the most positive predictors of
stroke outcome
Keywords:
complications/costs/education/elderly/GERIATRIC/LENGTH/morbidity/predict
ors/prevention/quality of life/REHABILITATION/STAY/stroke/stroke
outcome/treatment
Dwolatzky, T., Sonnenblick, M. and Nesher, G. (1997), Giant cell arteritis and
polymyalgia rheumatica: Clues to early diagnosis. Geriatrics, 52 (6), 38-&.
Abstract: Giant cells arteritis (GCA) and polymyalgia rheumatica (PMR) are closely
related disorders found predominantly in older patients. These disorders, which
are being recognized more frequently, are more common in women, in
Caucasians, and in various geographic locations. Early recognition and treatment
may prevent possible catastrophic consequences of GCA, such as blindness,
stroke, or dissection of the aorta. Although diagnosis is fairly easy with the
classic presentation, it may be missed when the patient presents with nonspecific
constitutional symptoms. An increased awareness among primary care
physicians will aid in the prevention of much of the morbidity and mortality
related to these diseases
Keywords:
awareness/COUNTY/diagnosis/diseases/dissection/GERIATRIC/INVOLVEME
NT/morbidity/mortality/prevention/primary care/stroke/TEMPORAL
ARTERITIS/treatment/women
Chandramouli, B.V. and Kotler, M.N. (1998), Atrial fibrillation: Preventing
thromboembolism and choosing nondrug therapies. Geriatrics, 53 (7), 53-60.
Abstract: A major consequence of atrial fibrillation (AF) is stroke. For stroke prevention
in AF, the American Heart Association recommends aspirin, 325 mg/d, for
low-risk patients. For all others, anticoagulation with warfarin to a target INR of
2 to 3 is recommended if warfarin is not contraindicated. Approximately 0.3% of
patients receiving warfarin suffer intracranial hemorrhage. For restoration of
sinus rhythm in recent AF, direct current cardioversion is the treatment of choice
if a trial of antiarrhythmic drug therapy has failed or is contraindicated. Potential
complications include thromboembolism, ventricular arrhythmia, and pulmonary
edema. Permanent pacemakers can be used to control conduction disturbances
such as sick sinus syndrome and to prevent paroxysmal AF. Radiofrequency AV
nodal ablation provides symptomatic relief for some patients with chronic or
paroxysmal AF. Surgical techniques are also being developed for AF. These
include left atrial isolation and the corridor and maze procedures
Keywords: AF/ANTICOAGULATION/aspirin/atrial
fibrillation/CARDIOVERSION/COMPLICATIONS/direct current/drug
therapy/fibrillation/GERIATRIC/hemorrhage/INR/MANAGEMENT/prevention/
stroke/stroke
prevention/therapy/thromboembolism/THROMBUS/treatment/warfarin
Ramirez-Lassepas, M. (1998), Stroke and the aging of the brain and the arteries.
Geriatrics, 53 S44-S48.
Abstract: Stroke continues to be the third most common cause of death and a major
cause of disability among those aged 70 years and older. The risk of stroke
doubles for every decade after age 55. Tt is 25% higher in men. Age,
cardiovascular disease, and hypertension, are major determinants of cerebral
blood flow; all have a negative impact on cerebral reperfusion. The risk of stroke
can be reduced at any age by treating and correcting concomitant risk factors:
hypertension; heart disease and cardiac arrhythmias (treatment with
anticoagulants); transient ischemic attacks (treatment by platelet inhibitors or
anticoagulants); and carotid stenosis (by endarterectomy). Cessation of smoking,
control of diabetes, reduction of serum lipids, and control of obesity can reduce
the risk of stroke. When stroke occurs, early treatment with rt-PA and aggressive
patient care results in reduced mortality and morbidity and makes for better
neurologic outcomes. Finally, prevention, of stroke reduces risk of vascular
dementia and makes a better functioning advanced age
Keywords: age/aged/anticoagulants/cardiovascular disease/carotid/carotid
stenosis/cerebral blood
flow/dementia/diabetes/DISEASE/ENDARTERECTOMY/GERIATRIC/heart/h
ypertension/lipids/morbidity/mortality/obesity/PREVENTION/reperfusion/RISK
/risk factors/smoking/stroke/TICLOPIDINE/transient/treatment/TRIAL/vascular
Eugene, J.R., Abdallah, M., Miglietta, M., Vernenkar, V.V., Pascual, R., Briones, R.,
Barnes, T. and Hager, J. (1999), Carotid occlusive disease: Primary care of
patients with or without symptoms. Geriatrics, 54 (5), 24-+.
Abstract: Of the half-million strokes that occur each year in the United States, 20 to 30%
can be directly linked to carotid occlusive disease. The degree of stenosis
involving the carotid bifurcation is an important predictor of stroke risk.
Asymptomatic disease may be diagnosed on routine physical exam or screening
of the carotid bifurcation in patients with risk factors for ischemic strokes.
Symptomatic disease includes transient ischemic attacks, stroke in evolution, and
complete stroke. Duplex ultrasound scanning is the standard test for the initial
evaluation of carotid artery disease. Patients undergoing surgery should also have
magnetic resonance angiography or an angiogram of the carotid vessels. Stroke
prevention includes lifestyle modification such as cessation of smoking, strict
dietary and medical management of hyperlipidemia, diabetes, and hypertension.
Antiplatelet, anticoagulant, and thrombolytic therapy can be used where
indicated
Keywords: anticoagulant/ARTERY STENOSIS/BIFURCATION/carotid/carotid
artery/carotid occlusive
disease/diabetes/DUPLEX/ENDARTERECTOMY/evaluation/GERIATRIC/hyp
erlipidemia/hypertension/ischemic/lifestyle/lifestyle modification/magnetic
resonance angiography/MAGNETIC-RESONANCE ANGIOGRAPHY/medical
management/NATURAL-HISTORY/PLAQUE
MORPHOLOGY/prevention/RISK/risk
factors/smoking/STROKE/surgery/therapy/thrombolytic
therapy/transient/transient ischemic attacks/ULTRASONOGRAPHY/United
States
Hemphill, J.C. (2000), Ischemic stroke - Clinical strategies based on mechanisms and
risk factors. Geriatrics, 55 (3), 42-+.
Abstract: Ischemic stroke is a common disorder associated with significant morbidity
and mortality. Results of several pivotal clinical trials completed within the last
decade have helped refine stroke prevention and treatment strategies.
Endarterectomy for symptomatic carotid artery stenosis, anticoagulation in atrial
fibrillation, and IV t-PA treatment of hyperacute ischemic stroke may reduce the
burden of stroke. Ongoing studies are addressing newly recognized risk factors,
such as aortic arch and intracranial atherosclerosis, as well as neuroprotective
agents and locally delivered thrombolytics. Successful patient management
requires a targeted clinical approach based on vascular localization and risk
factor assessment
Keywords: AMERICAN-HEART-ASSOCIATION/anticoagulation/atherosclerosis/atrial
fibrillation/ATRIAL- FIBRILLATION/carotid/carotid artery/carotid artery
stenosis/clinical
trials/COUNCIL/fibrillation/GERIATRIC/GUIDELINES/ischemic/ischemic
stroke/MANAGEMENT/morbidity/mortality/PREVENTION/risk/risk factor/risk
factors/stenosis/stroke/stroke prevention/symptomatic carotid artery
stenosis/t-PA/THROMBOLYTIC
THERAPY/thrombolytics/treatment/trials/vascular
Aronow, W.S. (2001), Cholesterol 2001 - Rationale for lipid-lowering in older patients
with or without CAD. Geriatrics, 56 (9), 22-+.
Abstract: Statin treatment of men and women age greater than or equal to 50 with
coronary artery disease (CAD) and hypercholesterolemia reduces the risk of
all-cause mortality, cardiovascular mortality, coronary events, coronary
revascularization, stroke, and intermittent claudication. The target serum
ow-density lipoprotein (LDL) cholesterol level Is 125 mg/dL despite diet therapy. Statins are
also effective in seducing cardiovascular events in older persons with
hypercholesterolemia but without cardiovascular disease. Consider using statins
in patients age 50 to 80 without cardiovascular disease, serum LDL cholesterol >
130 mg/dL, and serum high-density lipoprotein (HDL) cholesterol 70%
can be managed surgically, whereas those with less stenosis can be treated with
platelet antiaggregant therapy. Acute stroke is a medical emergency.
Thrombolytic therapy with tissue plasminogen activator within 3 hours of event
onset can significantly Improve outcomes in selected ischemic stroke patients.
Patients with Intracerebral hemorrhage usually present with acute onset of
Identifiable neurologic deficits
Keywords: acute/ASPIRIN/atrial/carotid/carotid stenosis/cause of
death/cerebrovascular/death/diabetes/disability/GERIATRIC/hemorrhage/hypert
ension/ischemic/ischemic
stroke/lipids/management/medical/outcomes/plasminogen
activator/platelet/prevention/primary/primary care/RISK/secondary/secondary
stroke prevention/serum/stenosis/stroke/stroke patients/stroke
prevention/therapy/TIA/transient/transient ischemic attacks/TRIAL/United
States/USA
Gupta, G. and Aronow, W.S. (2002), Hormone replacement therapy - An analysis of
efficacy based on evidence. Geriatrics, 57 (8), 18-+.
Abstract: Hormone replacement therapy (HRT) has been a staple of management of the
postmenopausal life phase. Over time, and after estrogen therapy was modified
to induce progestin, an increasing number of observational reports suggested that
HRT conferred benefits well beyond those of managing or minimizing hot
flushes, mood swings and vaginal dryness. In short, HRT was believed to
improve women's health and even extend life. One of the most significant
theorized benefits was protection against cardio- and cerebrovascular events.
Other benefits-protection against osteoporosis, reduction in incontinence
symptoms, and improved cognition-have also been linked with HRT. The
validity of these theories depended largely on observational studies and
anecdotal reports, and only lilghtly (or not at all) on randomized clinical trial
data. Nevertheless, significant clinical data refuting HRT's proposed benefits has
been available for several years. Findings from these investigations, including
new results from two very large trials, show that beyond managing traditional
menopause symptoms, HRT has little or no role in protection against certain
diseases or conditions associated with aging. Indeed, long-term use of HRT may
be contraindicated in most older women with intact uteruses
Keywords: aging/cerebrovascular/clinical
trial/COHORT/DISEASE/diseases/estrogen/ESTROGEN-REPLACEMENT/GE
RIATRIC/health/HEART/HRT/incontinence/management/menopause/observatio
nal studies/OSTEOPOROSIS/POSTMENOPAUSAL
WOMEN/PREVENTION/protection/randomized/randomized clinical
trial/RANDOMIZED CONTROLLED
TRIAL/STROKE/symptoms/therapy/trial/trials/use/USERS/validity/women
Messinger-Rapport, B.J. and Thacker, H.L. (2002), Prevention for the older woman - A
practical guide to managing cardiovascular disease. Geriatrics, 57 (7), 22-+.
Abstract: American women are more likely to die from cardiovascular disease than from
any other cause. Although hypertension is most prevalent, most deaths are
attributed to coronary heart disease. Heart disease in women manifests
approximately 12 to 15 years later than in men, up until menopause. Then the
severity of coronary artery lesions in women accelerates until it equals. or
surpasses that of men by the late 70s or early 80s. Physicians can help Ider,
women reduce their risk for heart disease and stroke by managing hypertension
and hypercholesterolemia and providing beta-blocker treatment when indicated
after MI. Nonpharmacologic interventions may be effective as well. New
guidelines,for aspirin help identify women, under age 80 who would benefit most
from antiplatelet therapy
Keywords: age/ANTIHYPERTENSIVE DRUG- TREATMENT/antiplatelet/antiplatelet
therapy/aspirin/beta-blocker/cardiovascular/cardiovascular
disease/CONTROLLED TRIALS/coronary heart disease/CORONARY
HEART-DISEASE/DENSITY-LIPOPROTEIN
CHOLESTEROL/disease/ELDERLY MEN/GERIATRIC/heart/heart
disease/hypercholesterolemia/hypertension/ISOLATED SYSTOLIC
HYPERTENSION/men/menopause/MORTALITY/MYOCARDIAL-INFARCTI
ON/RANDOMIZED TRIAL/risk/RISK
PATIENTS/severity/stroke/therapy/treatment/women
Aronow, W.S. (2003), C-reactive protein - Should it be considered a coronary risk factor?
Geriatrics, 58 (5), 19-+.
Abstract: C-reactive protein (CRP) is an acute phase reactant which is not associated.
With coronary atheroscierosis in many studies. However, it has been
demonstrated in many, but not all, studies to predict cardiovascular events.
Increased CRP levels may reflect tissue damage and inflammation not only in the
arteries, but anywhere in the body. Elevated CRP levels may be induced by
metabolic, infective, immunologic, or other processes. Increased CRP levels are
probably an indirect marker of any increased cytokine response to inflammatory
stimuli that are critical for atherosclerotic plaque progression and rupture. A
large-scale prospective trial is needed to investigate whether reduction of
elevated CRP will reduce cardiovascular events
Keywords: acute/arteries/AVERAGE CHOLESTEROL LEVELS/C-reactive
protein/cardiovascular/cardiovascular events/cardiovascular
risk/CARDIOVASCULAR-DISEASE/coronary atherosclerosis/coronary
risk/GERIATRIC/HEART- DISEASE/inflammation/inflammatory
response/ISCHEMIC
STROKE/MYOCARDIAL-INFARCTION/plaque/PRIMARY
PREVENTION/progression/risk/risk factor/STABLE
ANGINA-PECTORIS/STATIN THERAPY/SUBCLINICAL
ATHEROSCLEROSIS/trial/UNSTABLE ANGINA/USA
Dillavou, E. and Kahn, M.B. (2003), Peripheral vascular disease - Diagnosing and
treating the 3 most common peripheral vasculopathies. Geriatrics, 58 (2), 37-42.
Abstract: a common sign of generalized atherosclerosis, peripheral vascular disease
(PVD) occurs as a results of arterial narrowing or obstruction that restricts blood
flow to distal tissues. Prevalence of PVD ranges from 3% in patients age >55, to
11% in patients age >65, to 20% in those age 75 and older.
Cerebrovascular/carotid disease, abdominal aortic aneurysm, and peripheral
arterial occlusive disease are the most common peripheral vasculopathies seem
by primary care physicians. All require aggressive medical management to
prevent potentially serious complications and may require referral to vascular
surgeons for evaluation. Prevention remains the best therapy
Keywords: abdominal aortic
aneurysm/age/aneurysm/AORTIC-ANEURYSMS/arterial/atherosclerosis/blood
flow/cerebrovascular/cartoid
disease/complications/disease/evaluation/GERIATRIC/INTERMITTENT
CLAUDICATION/management/medical/medical management/peripheral
occlusive arterial disease/peripheral vascular disease/primary/primary
care/results/RISK-FACTORS/STROKE/therapy/USA/vascular/vascular disease
Mehta, N.N. and Greenspon, A.J. (2003), Atrial fibrillation - Rhythm versus rate control.
Geriatrics, 58 (4), 39-44.
Abstract: Atrial fibrillation (AF) is the most common sustained arrhythmia encountered
in primary care practice. Because the prevalence increases with age and the
overall population is steadily aging, physicians of all specialties will be faced
with managing more AF patients. AF independently increases mortality as well
as the risk of stroke, subsequent coronary events, and congestive heart failure.
Stroke prevention is particularly important in older patients, since they are at
highest risk for these events. In addition, because of an increased risk of
proarrhythmia, older adults should be managed cautiously with antiarrhythmic
drugs. Data are now emerging on the optimal management of older patients with
persistent AF. For each patient, physicians will have to answer the question: is
rhythm control better than rate control?
Keywords: adults/AF/age/aging/antiarrhythmic
drugs/ANTICOAGULATION/arrhythmia/atrial fibrillation/cardiovesrsion
anticoagulation therapy/congestive heart
failure/control/drugs/DYSFUNCTION/fibrillation/GERIATRIC/heart/heart
failure/MANAGEMENT/mortality/NODE/older
adults/population/prevalence/prevention/primary/primary care/risk/RISK
FACTOR/STROKE/stroke/TACHYCARDIA/THERAPY/USA
Reed, P.S., Foley, K.L., Hatch, J. and Mutran, E.J. (2003), Recruitment of older African
Americans for survey research: A process evaluation of the community and
church-based strategy in the Durham Elders Project. Gerontologist, 43 (1),
52-61.
Abstract: Purpose: The disproportionately high burden of morbidity and mortality
among older African Americans is due, in part, to a lack of understanding of the
factors contributing to these outcomes. In order to more fully understand the
factors that contribute to African American morbidity and mortality, researchers
must identify strategies for increasing the inclusion of older African Americans
in research on social and health phenomena. Design and Methods: This article is
a process evaluation describing the successes and challenges associated with
recruitment of older African Americans into research. It considers an effort to
nurture collaboration between university and community institutions to both
facilitate research endeavors and offer meaningful and culturally-appropriate
contributions to the community. Results: The primary challenges discovered in
this observational process evaluation of a church-based recruitment strategy
include the effective coordination of a community research advisory board,
ensuring participant autonomy, and reducing concerns of exploitation among
potential participants. Implications: A strategy of coordinating a community
research advisory board to incorporate the views of community members and to
drive a church-based recruitment procedure provides a starting point for tapping
into an immensely important segment of society historically ignored by the
research community
Keywords: African American/African Americans/ANTIPLATELET STROKE
PREVENTION/CLINICAL
RESEARCH/community/evaluation/HEALTH/minority
elders/morbidity/morbidity and
mortality/mortality/outcomes/PARTICIPATION/PARTNERSHIP/partnerships/P
OPULATIONS/primary/recruitment/research/research
participants/RETENTION/SOCIETY/survey/TRIALS/TUSKEGEE/USA/WOM
EN
Gaddi, A., Cicero, A.F.G., Nascetti, S., Poli, A. and Inzitari, D. (2003), Cerebrovascular
disease in Italy and Europe: It is necessary to prevent a 'pandemia". Gerontology,
49 (2), 69-79.
Abstract: In Italy and Europe, strokes are the third most common cause of death and
resulting invalidity. In the ever-increasing 80- years-old-and-over population,
strokes become more serious due to the clinical presentation during the acute
phase and the ten times higher mortality, but also in relation to the twice as high
resulting disability as for younger subjects. With the growing number of ailing
and not-self-sufficient elderly, other resources will have to be relocated to this
field of public health. Then, the dependence index and the ensuing equivalence
based on estimates for the first decades of 2000 will create more difficulties in
retrieving the funds for social policies. However, stroke prevention is possible
both through correct behavioural habits and pharmacological means. Besides the
well- known preventive effects of an adequate antihypertensive, antidiabetic
and/or antiaggregant/anticoagulant therapy, there is increasing evidence of the
effectiveness of statin therapy in stroke prevention. Subjects with a personal
history of cerebrovascular events have an increased coronary risk and vice versa.
The greatest part of the risk factors for the cerebrovascular disease coincides
with those for cardiovascular disease, for which the correction of the former
automatically involves a reduction in incidence of both pathologies. In this
context, a statin's rational use can therefore represent an important tool for the
combined prevention of the two pathologies. Finally, different hypotheses link
the origin of Alzheimer's disease to that of progressive cerebrovascular dementia
caused by cerebral microcirculation damage. The aim of this review is to resume
the actual knowledge about the epidemiology of cerebrovascular disease in Italy
and Europe, and about the means available to prevent this phenomenon.
Copyright (C) 2003 S. Karger AG, Basel
Keywords: acute/aging/Alzheimer's disease/ALZHEIMERS-
DISEASE/BLOOD-PRESSURE/BRAIN
INFARCTION/cardiovascular/cardiovascular disease/CAROTID-ARTERY
STENOSIS/cause of death/cerebral/CEREBRAL INFARCTION/cerebral
microcirculation/cerebrovascular/cerebrovascular disease/CORONARY
HEART-DISEASE/coronary risk/death/DELAYING HOSPITAL
ADMISSION/dementia/disability/disease/elderly/epidemiology/Europe/health/hi
story/incidence/ISCHEMIC STROKE
SUBTYPES/Italy/knowledge/microcirculation/mortality/NONRHEUMATIC
ATRIAL-FIBRILLATION/population/prevention/public health/review/risk/risk
factors/RISK-FACTORS/statin/statin therapy/statins/stroke/stroke
prevention/therapy/use
Bruning, J., Faust, M. and Krone, W. (2003), Hormone replacement therapy. Effect on
lipid metabolism and coronary heart disease. Gynakologe, 36 (3), 210-215.
Abstract: Hormone replacement therapy (HRT) for postmenopausal women has been
initiated on the basis of observational studies indicating that a reduction in
cardiovascular complications results. This assumption was supported by the fact
that estrogen, either alone or in combination with progestin, exhibits a positive
effect on the lipid profile and endothelial function. Recently, randomised studies
have examined the effect of HRT both in the primary and secondary prevention
of coronary heart disease. These indicate that HRT probably increases the risk of
myocardial infarction. Moreover, there is evidence for an increased risk of stroke
and embolism. These data indicate that HRT is not a currently valid therapeutic
concept for the reduction of cardiovascular morbidity and mortality. It should,
therefore, only be considered for severe postmenopausal symptoms and should
only be used short-term
Keywords: cardiovascular/cardiovascular
morbidity/combination/complications/coronary heart
disease/disease/embolism/endothelial
function/ESTRADIOL/ESTROGEN/Germany/HEALTH/heart/heart
disease/HERS/hormone replacement therapy (HRT)/HRT/infarction/lipid
profile/LIPOPROTEINS/metabolism/morbidity/morbidity and
mortality/mortality/myocardial/myocardial
infarction/NEW-YORK/observational studies/POSTMENOPAUSAL
WOMEN/prevention/primary/primary and secondary
prevention/PROGESTIN/results/RISK/secondary/SECONDARY
PREVENTION/stroke/symptoms/therapy/USA/WHI/women
Fahlman, M.M., Boardley, D., Flynn, M.G., Bouillon, L.E., Lambert, C.P. and Braun,
W.A. (2000), Effects of hormone replacement therapy on selected indices of
immune function in postmenopausal women. Gynecologic and Obstetric
Investigation, 50 (3), 189-193.
Abstract: The purpose of this study was to examine the effects of long- term hormone
replacement therapy (HRT) on selected indices of resting immune function in
postmenopausal women. Postmenopausal women aged 54-66 were divided into
two groups, those taking HRT (n = 17) and controls (n = 19). Blood samples
were obtained and analyzed for mononuclear cell numbers, lymphocyte
proliferation (LP) and natural cell-mediated cytotoxicity (NCMC), There were
no significant differences between groups for mononuclear cell numbers. LP was
significantly higher for HRT, while NCMC was significantly lower for HRT,
HRT is currently being prescribed to postmenopausal women for prevention of a
variety of medical conditions including osteoporosis, cardiovascular disease,
stroke, and Alzheimer's disease yet HRT is often associated with altered immune
parameters. In this study, women taking HRT had increased lymphocyte
blastogenesis and decreased NCMC compared to controls, Copyright (C) 2000 S.
Karger AG, Basel
Keywords: aged/Alzheimer's disease/BREAST-CANCER/cardiovascular/cardiovascular
disease/CELL/CORONARY
HEART-DISEASE/ESTRADIOL/estrogen/ESTROGEN
THERAPY/FOLLOW-UP/hormone replacement therapy/HRT/immune
function/lymphocyte proliferation/MORTALITY/natural cell-mediated
cytotoxicity/ORAL-CONTRACEPTIVES/osteoporosis/postmenopausal
hormone replacement/postmenopausal
women/prevention/RISK/stroke/SYSTEM/therapy/women
Pengo, V., Zasso, A., Barbero, F., Garelli, E. and Biasiolo, A. (1997), Low intensity
warfarin therapy. Haematologica, 82 (6), 710-712.
Abstract: Background and Objective. Several studies comparing different intensities of
oral anticoagulant treatment have clearly shown a relationship between bleeding
complications and prolongation of prothrombin time. In the early '50s, de Takats
suggested that low-dose oral anticoagulants might be as effective as higher doses
in preventing thrombosis, at a lower risk of bleeding. This review article
examines the potential of low dose warfarin therapy. information sources. The
authors have been working in this field, contributing original papers. In addition,
the material examined in this article includes articles published in the journals
covered by the Science Citation Index(R) and Medline(R). State of art and
Perspectives. The hypothesis that low-dose oral anticoagulants can be effective
in preventing thrombosis was first proven by experiments in animal models, and
showed that a prothrombin time ratio as low as 1.14 using rabbit brain
thromboplastin was still able to confer some inhibition of experimental
thrombosis. Low-dose or very low-dose warfarin were subsequently
demonstrated to be effective in patients with morbid obesity and decreased
antithrombin III functional and antigenic levels, in patients with indwelling
catheters, in patients undergoing gynecological surgery, as well as in patients
with stage IV breast cancer. Low-dose warfarin is also effective in the prevention
of embolic strokes in patients with non-rheumatic atrial fibrillation. However,
older patients (>75 years), who have a very high risk of bleeding, might be safer
taking a very low dose of warfarin (i.e., a daily dose of 1- 1.25 mg). Moreover,
after a period of run-in, a fixed, very low-dose warfarin schedule does not need
further laboratory control, which is a factor that could contribute to the full
acceptance of treatment by patients and could stimulate a broader prescription of
warfarin for the primary prevention of stroke in older patients with nonrheumatic
atrial fibrillation. Therefore, we have organized a multicenter clinical trial in
which 1000 patients with non-rheumatic atrial fibrillation will be randomized to
receive either a fixed mini-dose of warfarin or a standard dose. Positive results
might permit the treatment of most older patients with non-rheumatic atrial
fibrillation, creating a benefit for the community as a consequence of its effective
prevention of disabling strokes. (C) 1997, Ferrata Storti Foundation
Keywords: animal/anticoagulant/anticoagulant treatment/anticoagulants/atrial
fibrillation/ATRIAL-FIBRILLATION/complications/control/fibrillation/HEART
-VALVES/LOW-DOSE WARFARIN/obesity/ORAL
ANTICOAGULANT-THERAPY/oral anticoagulants/prevention/primary
prevention/prothrombin
time/RABBITS/RISK/stroke/surgery/therapy/THROMBOPLASTIN/THROMB
OSIS/treatment/TRIAL/warfarin
Carolei, A., Sacco, S. and Marini, C. (2001), Antiaggregant therapy and/or anticoagulant
therapy in the cerebrovascular patient. Haematologica, 86 (11), 36-39
Keywords: ACETYLSALICYLIC-ACID/anticoagulant/anticoagulant
therapy/ASPIRIN/ATRIAL-FIBRILLATION/CEREBRAL-ISCHEMIA/cerebro
vascular/RANDOMIZED TRIAL/SECONDARY/STROKE
PREVENTION/therapy/TICLOPIDINE/WARFARIN
Nicolini, A., Ghirarduzzi, A., Iorio, A., Silingardi, M., Malferrari, G. and Baldi, G.
(2002), Intracranial bleeding: epidemiology and relationships with
antithrombotic treatment in 241 cerebral hemorrhages in Reggio Emilia.
Haematologica, 87 (9), 948-956.
Abstract: Background and Objectives. Anticoagulant (AC) and antiplatelet (AP) drugs
are effectively used in the prevention of thromboembolic events, with the
trade-off of bleeding side effects, particularly intracranial. The aim of this study
was to determine the incidence of intracranial bleeding in the population of
Reggio Emilia and to investigate the potential effect of AC and AP drugs. Design
and Methods. We reviewed all the patients admitted for cerebral hemorrhages to
our hospital between April 1998 and September 2000. Data were collected with a
standardized form. All the patients were followed-up to estimate long-term
mortality. chi(2) and t-tests were used as appropriate. Logistic regression
analysis was performed to test predictors of mortality. Pharmaceutical
department data were employed to estimate the total number of patients receiving
AC and AP drugs. Results. We found 241 cases (107/134 female/male, mean age
61 years, 133/107 spontaneous/traumatic events, 0.32/1000/year overall).
Twenty-nine and 47 of these patients were being given AC or AP drugs,
respectively (4.9/1000/year and 3.7/1000/year). The relative risk of intracranial
bleeding was 11.5 in AP and 15.3 in AC treated patients. Two patients (one
underwent neurosurgery and one thrombolytic treatment) were excluded from
mortality and risk factors analysis. Six patients were lost from follow-up and
excluded from mortality analysis. Overall mortality was 100/233 (42.9%);
mortality in traumatic events was 25/103 (24.2%) versus 75/130 (57.7%) in
spontaneous events. Mortality was 19/29 (65.5%), 26/47 (55.3%) and 55/157
(35%) in AC recipients, AP recipients, and untreated patients, respectively. This
increased risk was mainly confined to traumatic events (p = 0.06), without
difference between AC and AP recipients, At the time of the event, the mean
duration of oral AC treatment was 26.3 months (range 1120). Mean INR was =
3.1 (range 1.6-8.8). Mortality was significantly predicted by the Glasgow Coma
Scale Score (GCS) at admission (p 0.1). The results of these studies
demonstrate that Orgaran is effective in deep vein thrombosis prophylaxis in
patients with acute ischaemic stroke. Orgaran is more effective than standard
low-dose heparin, and is recommended for the prevention of deep vein
thrombosis in patients with acute ischamic stroke
Keywords: DEEP VEIN THROMBOSIS/HEMORRHAGE/HEPARIN/ISCHEMIC
STROKE/LOW-MOLECULAR-WEIGHT
HEPARINOID/ORG-10172/ORGARAN/PROPHYLAXIS/VENOUS
THROMBOSIS
Coccheri, S., Palareti, G. and Fortunato, G. (1994), Antithrombotic Drugs in Peripheral
Obliterative Arterial Diseases. Haemostasis, 24 (2), 118-127.
Abstract: In the natural history of patients with peripheral obliterative arterial disease
(ROAD) the prognosis of the complaint ''intermittent claudication'' is relatively
good and the amputation rate is presently only about 3%. However, ROAD
patients carry a high risk of cardiovascular events and their cumultative mortality
rate within 10 years is as high as 40- 50%. Atherothrombotic events in the
coronary and, less frequently, cerebral arteries are by far the first cause of death
and disability in these patients. The rationale for antithrombotic drugs in the
treatment of POAD lies in the pivotal role of platelet activation and thrombin
formation in the evolution of the atherothrombotic lesions, but also in the effect
of some of these drugs on the regulation of microcirculatory responses. In acute
thrombotic arterial occlusion, Heparin is the ''first application'' drug, especially in
support of interventional revascularisation procedures. Regional thrombolysis
often coupled with angioplasty (PTA), or systemic thrombolysis, are effective in
revascularisation of especially infrainguinal-supra popliteal occlusions. However,
controlled clinical trials are needed. In chronic ROAD, intermittent claudication
can be improved with a rational walking exercise programme, but, besides
pentoxyphilline, especially ticlopidine significantly adds to the benefits of
exercise. Regarding districtual progression of atherothrombosis and especially
cardiovascular events, both aspirin and ticlopidine have been shown effective in
single studies or meta-analyses. In a recent observational study of pooled data the
cumulative endpoint including myocardial infarction, stroke and vascular death
was reduced by 25 +/- 10% in the generality of patients treated with antiplatelet
drugs. Finally, in critical limbs ischemia (CLI), some prostanoid compounds as
Iloprost and Prostaglandin F1 favourably influence rest pain and ulcer healing,
but less evidence is available on their effects on hard events as amputation and
death. In conclusion, following the general indication to ''be conservative'' in the
treatment of these patients, it seems clear that antithrombotic drugs have become
by far a key medication in all different phases of POAD
Keywords: angioplasty/ANTITHROMBOTIC
DRUGS/ASPIRIN/BLOOD/BYPASS-SURGERY/cardiovascular events/clinical
trials/CRITICAL LEG
ISCHEMIA/DOUBLE-BLIND/exercise/formation/history/INTERMITTENT
CLAUDICATION/ischemia/mortality/MULTICENTER/myocardial
infarction/POAD/PREVENTION/PROGRESSION/risk/stroke/thrombolysis/TIC
LOPIDINE/treatment/TRIAL/trials/vascular/VASCULAR-DISEASE
Sasaki, Y., Ishii, I., Giddings, J.C. and Yamamoto, J. (1996), Protective effects of
ticlopidine and aspirin, administered alone and in combination, on thrombus
formation in rat cerebral vessels. Haemostasis, 26 (3), 150-156.
Abstract: The protective effects of ticlopidine and d,l-lysine acetylsalicylate (L-ASA),
used alone and in combination, on the pathogenesis of thrombosis in cerebral
blood vessels were investigated in a rat animal model using a Ile-Ne laser
method, Ticlopidine and L-ASA, given orally at a concentration from 100 mg/kg,
inhibited thrombus formation in a dose-dependent manner. Ticlopidine (300
mg/kg p.o) inhibited thrombosis in arterioles and venules for 3 days after
administration, The inhibitory activity of L-ASA (300 mg/kg p.o.) was less
prolonged than that of ticlopidine and was observed fur only approximately 24 h.
Combined administration of ticlopidine and L-ASA significantly enhanced and
prolonged the antithrombotic effects of either drug given alone, The results
demonstrate that ticlopidine and L-ASA have potent antithrombotic properties in
rat cerebral blood vessels in vivo
Keywords: ADENOSINE/animal/ANTIPLATELET AGENTS/aspirin/cerebral
vessels/d/l-lysine acetylsalicylate/helium-neon
laser/PHARMACOLOGY/PREVENTION/rat/STROKE/THERAPY/THROMB
OMODULIN/thrombosis/thrombus/ticlopidine
Lechler, E., Schramm, W., Flosbach, C.W., Bergemann, W., Brockhaus, W., Egbring, R.,
Garbor, M., Geidel, H., Hengstmann, J.H., Jager, K., Keller, F., Lenz, K.,
Ludwig, M., Maurin, N.J.A., Niessner, H., PicklPfeffer, S., Platt, D., Schauer, J.,
Schentke, K.U., Schulz, J., Slany, J., Teufel, J., Halbritter, R., Thiele, G., Thier,
W.H., Treese, N. and Wagner, T. (1996), The venous thrombotic risk in
non-surgical patients: Epidemiological data and efficacy safety profile of a low-
molecular-weight heparin (enoxaparin). Haemostasis, 26 49-56.
Abstract: In a multicentre, randomized, double-blind controlled trial comparing the
low-molecular-weight heparin enoxaparin (40 mg) with a standard
unfractionated heparin (Ca-heparin, 3 x 5,000 U) in deep-vein thrombosis
prophylaxis in a highrisk group of 959 hospitalized medical patients, enoxaparin
was at least as efficacious as standard heparin, with fewer adverse events
Keywords: adverse events/DEEP-VEIN-THROMBOSIS/DOUBLE-BLIND
TRIAL/epidemiology/heparin/INTERNAL/LOW-DOSE
HEPARIN/low-molecular-weight heparin/MEDICAL INPATIENTS/medical
patients/MYOCARDIAL-INFARCTION/PREVENTION/PROPHYLAXIS/risk/
safety/STROKE/SUBCUTANEOUS
HEPARIN/THROMBOEMBOLISM/thrombosis/thrombosis
prophylaxis/unfractionated heparin/venous thrombosis
Harenberg, J., Roebruck, P. and Heene, D.L. (1996), Subcutaneous low-molecular
weight heparin versus standard heparin and the prevention of thromboembolism
in medical inpatients. Haemostasis, 26 (3), 127-139.
Abstract: In a multicenter, double-blind clinical trial in 1,968 inpatients 1 daily
subcutaneous administration of LMW heparin plus 2 placebo injections or 3 x
5,000 IU unfractionated (UF) heparin was given for 10 (8-11) days. The primary
end point was the incidence of proximal deep-vein thrombosis or pulmonary
embolism. Patients were assessed during the study period for development of
proximal deep-vein thrombosis by compression sonography at days I and 10 and
for pulmonary embolism by scintigraphy in symptomatic patients. Aim of the
study was to demonstrate the equivalence of both treatment regimens. A total cf
1,968 patients were randomized to receive UF or LMW heparin. Of these, 378
patients were excluded during the study period, so that 780 patients on UF and
810 on LMW heparin were included in the efficacy analysis. Four primary end
points were observed with UF and 6 with LMW heparin, demonstrating the
equivalence of treatments (p = 0.012). Additionally, pulmonary embolism was
suspected as the cause of death in 6 patients who died during the study (3 per
treatment group). A higher frequency of death (n = 32) was observed in the
LMW-heparin group (p = 0.02) particularly documented in a part of the centers.
Safety analysis showed a higher frequency of local pruritus, local erythema and
subcutaneous hematoma, a higher increase in plasma levels of triglycerides, total
cholesterol, alanine aminotransferase and aspartate aminotransferase, and a
decrease of antithrombin III in patients receiving UF heparin. A decrease in
platelet count (values ranging between 40,000 and 80,000 mu l) was observed in
4 patients with UF and in none with LMW heparin. No severe thrombocytopenia
was observed. Subcutaneous LMW heparin is as effective as UF heparin for
prophylaxis of thromboembolism in bedridden, hospitalized medical patients
Keywords: ACUTE ISCHEMIC STROKE/cholesterol/DEEP-VEIN
THROMBOSIS/development/DOUBLE-BLIND TRIAL/heparin/low-
molecular-weight
heparin/MYOCARDIAL-INFARCTION/prevention/PROPHYLAXIS/prophylax
is/pulmonary
embolism/RABBITS/RISK/SURGERY/thromboembolism/thrombosis/treatment/
triglycerides/VENOUS THROMBOSIS
Harker, L.A., Hanson, S.R., Wilcox, J.N. and Kelly, A.B. (1996), Antithrombotic and
antilesion benefits without hemorrhagic risks by inhibiting tissue factor pathway.
Haemostasis, 26 76-82.
Abstract: The effects of inhibiting tissue factor-dependent thrombus formation on
vascular neointimal lesion formation have been evaluated by inhibiting tissue
factor activity using intravenous injections of active-site inactivated recombinant
factor VIIa (FVIIai) administered to baboons immediately prior to initiating
bilateral femoral balloon artery angioplasty and surgical carotid endarterectomy.
FVIIai abolished thrombus formation at sites of vascular injury and decreased
vascular lesion formation by approximately 50 percent at 30 days. We conclude
that thrombus formation at sites of vascular injury is predominately tissue
factor-dependent and that transient inhibition of tissue factor activity prevents
both vascular thrombosis and vascular lesion formation, which implies that
transiently inhibiting tissue factor at the time of elective mechanical vascular
procedures may be useful in reducing clinical restenosis
Keywords: angioplasty/carotid/carotid
endarterectomy/COAGULATION/endarterectomy/formation/HIRUDIN/IIIA/IN
TERRUPTION/PREVENTION/STROKE/THROMBOSIS/thrombus/TICLOPID
INE/tissue factor/TRIAL/vascular neointimal lesion/vascular thrombosis
Ridker, P.M. (1997), Intrinsic fibrinolytic capacity and systemic inflammation: Novel
risk factors for arterial thrombotic disease. Haemostasis, 27 2-11.
Abstract: Traditional risk factors, e.g. hyperlipidemia, cigarette consumption, blood
pressure, family history, and diabetes, predict 65 years, and chronic heart failure were considered to be
clinical risk factors for thromboembolism. Setting: Tertiary cardiac care centre.
Patients: 301 consecutive patients with non- rheumatic atrial fibrillation
scheduled for TOE. Results: 255 patients presented with clinical risk factors. 158
patients had reduced left atrial blood flow velocities, dense spontaneous echo
contrast, or both. Logistic regression analysis showed that a reduced left
ventricular ejection fraction and age > 65 years were the only independent
predictors of a thrombogenic milieu (both p 75 years of age, or patients with ''lone'' or paroxysmal atrial fibrillation.
It is well established that patients with chronic atrial fibrillation undergoing
medical or DC-cardioversion are at risk for thromboembolic complications. In
previous studies, this risk appears to be in the range of 2% without concomitant
anticoagulation, but only 0.33% in those patients with concomitant
anticoagulation. Thus, it is widely accepted that patients should be
anticoagulated for at least 2 weeks prior and after planned cardioversion.
Recently, an alternative concept has been proposed omitting anticoagulation
before cardioversion; instead, transesophageal echocardiography is used to
exclude intracardiac thrombi. Because, it is known that mechanical function of
the left atrium and appendage is still impaired after cardioversion, this concept of
echocardiographic-guided cardioversion does not a sign the necessity of
anticoagulation at the day of cardioversion, and 2 weeks afterwards. The safety
aspects of this concept of echocardiographic-guided cardioversion is under
current investigation
Keywords: anticoagulation/ARTERIAL EMBOLISM/atrial
fibrillation/CARDIOVERSION/CEREBRAL INFARCTION/clinical
trials/echocardiography/elderly/EMBOLIC
COMPLICATIONS/fibrillation/FRAMINGHAM/HEART-DISEASE/oral
anticoagulation/prevention/primary
prevention/risk/RISK-FACTORS/safety/secondary
prevention/STROKE/THROMBOEMBOLIC
COMPLICATIONS/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/trials/URBAN/warfarin
Horstkotte, D., Piper, C., Wiemer, M. and Schultheiss, H.P. (1998), Diagnostic approach
and optimal treatment of aortic valve stenosis. Herz, 23 (7), 434-440.
Abstract: The slow progression of valvular aortic stenosis enables the left ventricular
myocardium to adapt itself to the increasing afterload. When myocardial
adaption is exhausted, surgical intervention is urgent, the prognosis, however, is
already limited. To quantify the hemodynamic severity of aortic stenosis,
transaortic pressure gradients (dp) measured by Doppler echocardiography or
hemodynamically are inappropriate, because dp is significantly dependent on the
transaortic flow volume. In severe aortic stenosis, despite constant narrowing of
the aortic valve aerea, the reduced stroke volume results in decreasing transaortic
pressure gradients. With aortic valve resistance or transaortic pressure loss (PL) -
the quotient of pressure gradient and stroke volume - the hemodynamic severity
of aortic stenosis can be described accurately. If PL is known, a decompensated
aortic stenosis (PL > 1 mm Hg/ml) may be differentiated from myocardial failure
of another etiology and a concomitant left ventricular outflow tract obstruction.
With respect to medical therapy, the prevention of bacterial endocarditis and
thromboembolic complications is important. Knowing the potential danger of
syncopies and ventricular arrhythmias during exercise with increasing severity of
aortic stenosis, patients have to be informed about their limited functional
capacity. The occurrence of typical symptoms during the natural history of
chronic aortic stenosis (e, g, dizziness, syncopes, angina pectoris, arrhythmias)
manifestation of ST-T-alterations or silent myocardial ischemias and
demonstration of an inadequat myocardial adaption to the chronic pressure
overload in asymptomatic patients are accepted indications for a surgical
intervention. If the indication for surgery remains uncertain, stress tests (e, g,
radionuclidventriculography) may be performed to demonstrate an exhausted
myocardial adaption. If the PL and the severity of aortic valve/anulus
calcification is known, the progression of a chronic aortic stenosis can be
estimated. This might be important. if a cardiosurgical intervention has to be
performed for other indications and aortic stenosis is co-existent but does not
require an intervention at that time. For prognostic reasons myocardial
decompensation due to aortic stenosis is an indication for an urgent surgical
intervention. Attempts for medical recompensation or bridging strategies (e. g.
ballon valvotomie) worsens the prognosis significantly
Keywords: angina/aortic stenosis/aortic stenosis and intervention strategies/aortic
stenosis and medical therapy/aortic stenosis and myocardial failure/aortic
stenosis and stress tests/complications/diagnostic standards in suspected
stenosis/echocardiography/etiology/exercise/history/prevention/prognosis/progre
ssion of aortic stenosis/severity/stress/stroke/surgery/treatment/URBAN
Jung, W. and Luderitz, B. (1998), Implantable atrial defibrillator. Herz, 23 (4), 251-259.
Abstract: Atrial fibrillation (AF) is a frequent and costly health care problem
representing the most common arrhythmia resulting in hospital admission. Total
mortality and cardiovascular mortality are significantly increased in patients with
AF compared to controls. In addition to symptoms of palpitations, patients with
AF have an increased risk of stroke and may also develop decreased exercise
tolerance and left ventricular dysfunction. All of these problems may be reversed
with restoration and maintenance of sinus rhythm. External electrical
cardioversion has been a remarkably effective and safe method for termination of
this arrhythmia. Originally described by Lown et al. in 1963, it has been a well
accepted mode of acute therapy. However, this technique requires general
anesthesia or heavy sedation. Internal atrial defibrillation has been evaluated as
an alternative approach to the external technique for over 2 decades. Recent
studies have shown that low-energy internal atrial defibrillation using biphasic
shocks is an effective and safe means in restoring sinus rhythm in patients with
AF and should be considered especially in patients in whom external
cardioversion attempts have failed. Implantable Atrial Defibrillator: Recently, a
stand alone IAD, the Metrix(TM) System (model 3000 and 3020),has entered
clinical investigation. Atrial defibrillation is accomplished by a shock delivered
between electrodes in the right atrium and the coronary sinus. The right atrium
lead has an active fixation in the right atrium. The coronary sinus lead has a
natural spiral configuration for retention in the coronary sinus, and can be
straightened with a stylet. Both leads are 7 French in diameter and the
defibrillation coils are each 6 cm in length. The electrodes may be placed using
separate leads, or very soon by using a single bipolar lead. A separate bipolar
right ventricular lead is used for R wave synchronization and post shock pacing.
The Metrix(TM) defibrillator can be used to induce AF by using R wave
synchronous shocks and can store intracardiac electrograms (EGMs) for up to 2
minutes from the most recent 6 AF episodes. The device can be programmed into
one of the following operating modes: fully automatic, patient activated, monitor
mode, bradycardia pacing only, and off. As AF is not life-threatening, in the
automatic mode the device is only intermittently active in detecting and treating
AF, and this "sleep wake-up" cycle interval is programmable. The device
employs extensive processing both for detection and R wave synchronization. In
April 1996, the phase I Metrix(TM) multicenter clinical trial was started. As of
May 1997, a total of 51 Metrix(TM) systems had been implanted as part of the
phase I multicenter clinical trial. Preliminary data suggest that both defibrillation
thresholds and electrograms are stable over time (implant to 3 months).
Detection accuracy has been excellent (100% specificity, 92.3% sensitivity) and
there have been no errors of R wave selection for synchronization. No
proarrhythmias have resulted from over 3700 shocks delivered. The device is
effective in electrically converting 96 % of the spontaneous episodes of AF. In
27% of episodes several shocks were required because of early recurrence of AF.
In 5 patients. the atrial defibrillator was removed: 2 infections, 1 cardiac
tamponade, 1 permanent loss of telemetry, 1 patient required His-Bundle
ablation because of frequent episodes of drug refractory AF with rapid
ventricular response. Initial clinical experience under controlled conditions with
the Metrix(TM) system suggests that the implantable atrial defibrillator may
offer a therapeutic alternative for a subgroup of patients with drug refractory,
symptomatic, long lasting, and infrequent episodes of AF. Further efforts must
be undertaken to reduce the patient discomfort associated with internal atrial
defibrillation in an attempt to make this new therapy acceptable to a larger
patient population with AE Combined Atrioventricular Defibrillator Recently, a
new dual-chamber defibrillator, the 7250 Jewel(R) AF AMD, has entered clinical
evaluation. Concern has been raised whether or not a stand alone implantable
atrial defibrillator is safe enough or should provide ventricular backup
defibrillation in the rare case of shock induced ventricular proarrhythmia. The
availability of a dual-chamber defibrillator has reactivated the discussion about
the safety of a stand alone implantable atrial defibrillator. The most important
new features of the 7250 Jewel(R) AF AMD system include: dual-chamber
pacing, a new dual-chamber detection criterion for rejection of supraventricular
tachycardias, detection and treatment modalities of atrial arrhythmias. prevention
strategies for atrial arrhythmias. Initial clinical experience with the 7250 Jewel(R)
AF AMD device that combines both detection and treatment in the atrium as well
as in the ventricle indicates a significant improvement in the management of
patients with both suproventricular and ventricular tachyarrhythmias
Keywords: AF/atrial arrhythmias/atrial fibrillation/CARDIOVERSION/combined
atrioventricular defibrillator/evaluation/exercise/FIBRILLATION/health/health
care/hospital/implantable atrial defibrillator/internal
cardioversion/mortality/prevention/recurrence/risk/safety/stroke/therapy/treatme
nt/URBAN
Weizel, A. (1999), Treatment with HMG-CoA reductase inhibitors - More than lipid
lowering? Herz, 24 (1), 42-50.
Abstract: An elevated plasma cholesterol concentration is an established risk factor for
coronary heart disease. Dietary and drug interventions with fibrate. nicotinic acid
and colestyramine have resulted in a decreased rate of major coronary events but
failed to decrease mortality. Studies using the: more potent lipid lowering statins
have shown remarkable results in primary (WOSCOPS, AFCAPS, TexCAPS)
and secondary prevention (4S, CARE, LIPID). The use of these drugs reduced
the risk for coronary events as well as the need for interventions. Furthermore,
improvement of angina has been shown in several studies, in high-risk patients
coronary heart disease associated mortality and overall mortality was reduced.
Lowering of cholesterol was shown to be effective in women, older people and
diabetics. Lipid lowering improves prognosis after heart transplant and could be
an alternative to PTCA. Furthermore it was also shown that cholesterol lowering
reduces the incidence of stroke. New mechanisms are discussed to explain the
rapid onset of clinical improvement. Among these are: influences on
inflammatory processes in the plaque, on vascular smooth muscle activity, on
coagulation and on endothelial dysfunction
Keywords: angina/angina
pectoris/ANGINA-PECTORIS/CARE/cholesterol/CHOLESTEROL
LEVELS/cholesterol-lowering/coagulation/coronary heart
disease/CORONARY-ARTERY DISEASE/drugs/heart/HEART- DISEASE/high
risk/HMG-CoA reductase inhibitors/incidence/lipid lowering/MIDDLE-AGED
MEN/mortality/muscle/myocardial
infarction/MYOCARDIAL-INFARCTION/plaque/PRAVASTATIN/prevention/
primary/prognosis/risk/risk factor/SCANDINAVIAN SIMVASTATIN
SURVIVAL/secondary
prevention/SERUM-CHOLESTEROL/smooth/statins/stroke/TOTAL
MORTALITY/URBAN/vascular/women
Szucs, T.D., Berger, K., Marz, W. and Schafer, J. (2000), Cost-effectiveness of
pravastatin in secondary prevention in patients with myocardial infarction or
instable angina in germany. An analysis on the basis of the LIPID trial. Herz, 25
(5), 487-494.
Abstract: Secondary coronary prevention with lipid lowering drugs has become a major
issue in health policy formulation due to the large upfront investment in drug
therapy. The recently completed LIPID trial with pravastatin in secondary
prevention immediately raise the question whether pravastatin might be
cost-effective in Germany. We conducted a cost-effectiveness analysis from the
perspective of third party payers. The following costs were included in the
analysis: daily treatment costs of pravastatin, non-fatal myocardial infarction,
coronary bypass operations and stroke. Life years gained were obtained by
applying the declining exponential approximation of life expectancy. All
calculations were standardized to 1,000 treated patients. The net costs of treating
1,000 patients (i.e, drug costs minus the costs of sequelae and interventions) are
DM 8.4 Mio. In addition, a total of 405 life years may be saved through
treatment. The corresponding cost-effectiveness of pravastatin treatment is DM
20 674-,(DM 17314,-, discounted by 3% p.a.). The results suggest that the
cost-effectiveness of pravastatin in secondary prevention lies well within the
threshold of other commonly accepted medical interventions and ma!: be
considered an economically viable approach for secondary coronary prevention
Keywords: angina/ATHEROSCLEROSIS/AVERAGE CHOLESTEROL
LEVELS/CONVENIENT APPROXIMATION/coronary heart
disease/CORONARY HEART-DISEASE/cost analysis/cost
effectiveness/cost-effectiveness/cost-effectiveness analysis/costs/DEALE/drug
therapy/drugs/EVENTS/Germany/health/infarction/LIFE EXPECTANCY/lipid
lowering/lipids/myocardial/myocardial
infarction/pravastatin/prevention/secondary
prevention/status/stroke/THERAPY/treatment/unstable angina pectoris/URBAN
Schreiber, C., Augustin, N., Holper, K. and Lange, R. (2001), Thrombosis of a
mechanical prosthetic heart valve after inadequate anticoagulation with
low-molecular-weight heparin. Herz, 26 (7), 482-484.
Abstract: Case Report: A 55-year-old woman with a mechanical aortic prosthesis was
admitted with pulmonary edema and suspect of valvular malfunction. The patient
had a anticoagulation therapy at the time with low-molecular-weight heparin
only. Echocardiography confirmed a failing mobility of a prosthetic valve leaflet.
Emergency aortic valve replacement was performed. Conclusion: According to
international approved guidelines an adequate anticoagulation after mechanical
prosthetic heart valve replacement is provided either by oral anticoagulants, or,
in the case of pregnancy or surgical procedures, by unfractioned heparins. The
use of low-molecular- weight heparin as sole anticoagulant remains a matter of
controversy in the literature. In recent years low-molecular- weight heparins
were mainly administered for prevention and treatment of deep vein thrombosis,
pulmonary embolism, stroke, and instable angina
Keywords:
angina/anticoagulant/anticoagulants/anticoagulation/COMPLICATIONS/deep
vein thrombosis/embolism/Germany/guidelines/heart/heparin/heparins/low
molecular weight heparin/low-molecular-weight heparin/mechanical heart
valves/oral anticoagulants/prevention/prosthesis/prosthetic valve
thrombosis/pulmonary
embolism/stroke/therapy/thrombosis/treatment/URBAN/use
Funck, R.C., Pomsel, K., Grimm, W., Hufnagel, G. and Maisch, B. (2001), Prevention
of atrial arrhythmias by pacing. Herz, 26 (1), 18-29.
Abstract: Background: Atrial fibrillation is the most frequent arrhythmia. it can impair
quality of life considerably. Due to thromboembolic complications it contributes
to the patients' morbidity and mortality and to the costs for their medical
treatment. Prevention: In chronic atrial fibrillation there is a need for adequate
anticoagulation and heart rate control. In paroxysmal and intermittent atrial
fibrillation it should be sought to prevent its progression to chronic atrial
fibrillation. Since atrial fibrillation initiates negative processes of remodeling
within the atrial myocardium, it has the tendency to perpetuate itself. From a
theoretical point of view, it can be expected that all means which prevent
episodes of atrial fibrillation or which terminate it immediately after its onset, are
able to prevent or at least to delay the progression to chronic atrial fibrillation.
Pharmacologic treatment is usually used to prevent recurrences of atrial
fibrillation. Based on the actual data it can also be expected that pacemakers with
special preventive pacing algorithms are able to reduce the atrial arrhythmic
burden. Besides consequent overdrive pacing, more sophisticated algorithms like
"suppression of premature atrial contractions", "post exercise response",
"automatic rest rate" or "post mode-switch pacing" have been developed. They
can be applied either alone or in combination with special lead positions
(interatrial septal pacing or pacing of the triangle of Koch) or special stimulation
configurations like dual site right atrial pacing or biatrial pacing. These pacing
strategies cover the most relevant onset mechanisms of atrial fibrillation.
Furthermore, there are algorithms to treat atrial tachyarrhythmias actively by
antitachycardia pacing (ATP). First clinical results have shown that a bout 2/3 of
the diagnosed atrial tachyarrhythmias could be terminated by these means
immediately after their onset. Ongoing Trials: This article gives an overview
over the principles of pacing in the management of atrial arrhythmias and
ongoing clinical trials in this field. Before a definite judgement on the clinical
relevance of these new preventive and therapeutic pacing strategies can be given,
the results of these ongoing controlled clinical studies have to be analyzed
Keywords: anticoagulation/antitachycardia pacing/arrhythmia/arrhythmias/atrial
arrhythmias/atrial fibrillation/atrial flutter/atrial pacing/chronic atrial
fibrillation/clinical
trials/combination/complications/control/costs/exercise/FIBRILLATION/Germa
ny/heart/heart rate/management/mechanisms/medical/medical
treatment/morbidity/MORTALITY/myocardium/pacemaker/pacemakers/pacing/
PREVALENCE/prevention/preventive pacing/PROGNOSIS/quality of
life/REFRACTORINESS/RISK/SICK-SINUS
SYNDROME/stimulation/STROKE/TERM FOLLOW-UP/thromboembolic
complications/treatment/TRIAL/trials/URBAN
Schuchert, A. and Meinertz, T. (2002), Prevention of arterial thromboembolism in
patients with atrial fibrillation. Herz, 27 (4), 322-328.
Abstract: Background: Patients with atrial fibrillation have a 5% risk per year for
ischemic stroke. The aim of antithrombotic therapy is to prevent arterial
thromboembolic events. As anticoagulation increases the frequency of bleeding,
the risk and benefits of this therapy have to be assessed for each patient. Patients
at Risk: The patients can be classified as low risk ( 6% stroke/year). Parameters for
the risk stratification are the patient age and cardiac as well as non-cardiac
diseases. Prevention: Patients with a low risk need no anticoagulation or can take
aspirin. Patients with a high risk should receive oral anticoagulation with an INR
range from 2.0 to 3.0. Newer guidelines recommend also for patients with
intermediate level of stroke risk instead of aspirin the prescription of oral
anticoagulation. Patients with a medium risk can interrupt the oral
anticoagulation before surgery or invasive diagnostic procedures for 1 week,
patients with a high risk should receive heparin. 3-4 weeks before and after
cardioversion the standard therapy is oral anticoagulation
Keywords: age/ANTICOAGULATION/antithrombotic/ANTITHROMBOTIC
THERAPY/arterial/aspirin/ASPIRIN THERAPY/atrial/atrial
fibrillation/bleeding/cardiac/cardioversion/diagnostic/diseases/ELDERLY
PATIENTS/EMBOLISM/fibrillation/FIXED MINIDOSE
WARFARIN/Germany/guidelines/heparin/high risk/INR/ischemic/ISCHEMIC
STROKE/oral anticoagulation/RISK/risk
stratification/stroke/surgery/therapy/thromboembolic
events/thromboembolism/THYROTOXICOSIS/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/URBAN
Hambrecht, R. (2002), Exercise in moderate heart failure - a critical reappraisal. Herz,
27 (2), 179-186.
Abstract: Background: Exercise intolerance in patients with chronic heart failure (CHF)
shows no correlation to the degree of left ventricular dysfunction. This surprising
finding has directed attention to peripheral changes in CHF. During the last years
several different peripheral factors as determinants of exercise intolerance have
been defined, i.e. abnormalities in ventilation, reduced endothelium-dependent
vasodilatation of peripheral conduit and resistance vessels, and altered skeletal
muscle metabolism. Skeletal muscle alterations are characterized by a reduced
oxidative capacity, a catabolic state with reduced local IGF-I expression and
muscle atrophy, chronic inflammation with local expression of the inducible
isoform of nitric oxide synthase (iNOS) and an accelerated rate of programmed
cell death (apoptosis). Effects of Physical Exercise: Physical exercise training
has evolved as an important therapeutic approach to influence these non-cardiac
causes of exercise intolerance. After the first studies documenting the effect of
aerobic training on the peripheral causes of exercise intolerance in CHF the
question was asked: Should we treat the heart or the periphery to improve
exercise intolerance in CHF? Today, we have come closer to the answer: It is
now clear that these two systems are not mutually exclusive. Exercise training in
CHF has been shown to improve skeletal muscle metabolism and function, to
avert muscle catabolism, to reduce neurohumoral overactivation, to reverse
endothelial dysfunction and to contribute to the prevention of pathologic left
ventricular remodeling. After 6 months of regular exercise training oxidative
capacity of the working skeletal muscle increases by approximately 40%.
Regular exercise training leads to a significant improvement of
endothelium-dependent vasodilatory capacity of peripheral resistance vessels,
thereby reducing peripheral resistance in particular during exercise. These
beneficial training effects result in a small, but significant improvement of stroke
volume and reduction in cardiomegaly, Conclusion: Although several questions
regarding patient selection, optimal training protocol and training intensity
remain unanswered, exercise training can been seen as an established adjunct to
pharmacotherapy in CHF. We may soon reach the conclusion that by treating the
periphery with exercise programs we are in fact treating the heart, as well. All
exercise-induced adaptations converge to increase peak oxygen uptake by up to 2
ml/kg.min. For patients in stable CHF on optimal cardiac medication a
combination of in-hospital and home-based aerobic endurance training in
combination with local muscle strength training seems most promising. Although
exercise training offers no causal treatment of CHF, it has great potentials as an
adjunct therapy directed at improving exercise tolerance and expanding the
physical limits of CHF patients
Keywords: apoptosis/cardiac/causes/chronic/chronic heart
failure/combination/CONTROLLED TRIAL/CORONARY-ARTERY
DISEASE/cytokines/death/ENDOTHELIAL DYSFUNCTION/exercise/exercise
training/FACTOR-ALPHA/Germany/heart/heart
failure/inflammation/intensity/left ventricular/left ventricular
dysfunction/LEFT-VENTRICULAR FUNCTION/metabolism/muscle/nitric
oxide/NITRIC-OXIDE/ORAL L-ARGININE/oxygen uptake/physical
capacity/prevention/REGULAR PHYSICAL
EXERCISE/SKELETAL-MUSCLE/stroke/therapy/treatment/TUMOR-NECRO
SIS-FACTOR/URBAN/vascular resistance/vessels
Burkhard-Meier, C., Deutsch, H.J., LaRosee, K., Hopp, H.W. and Erdmann, E. (1998),
Transcatheter closure of patent foramen ovale in 43 year old patient with stroke
by ASD Occlusion System (ASDOS (R)). Herz Kreislauf, 30 (3), 84-89.
Abstract: Patent foramen ovale (PFO) is a common finding in patients with cryptogenic
stroke. We report the transcatheter closure of patent foramen ovale in a 43 year
old patient with stroke by ASD Occlusion System (ASDOS(R)). A PFO may be
detected by both invasive and noninvasive techniques. Transoesophageal contrast
echocardiography has a greater sensitivity compared to transthoracal echo in
detecting a PFO. Predictive risk factors for further neurologic events in patients
with PFO are a large degree of shunt by contrast echocardiography and atrial
septal aneurysm. Possibly patients with PFO and risk factors for stroke
recurrence will take advantage from transcatheter closure
Keywords: ASD Occlusion System (ASDOS (R))/ATRIAL SEPTAL
ANEURYSM/BUTTONED DEVICE/CONTRAST TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/CRYPTOGENIC
STROKE/echocardiography/EVENTS/foramen ovale/PARADOXICAL
EMBOLISM/paradoxical embolism/patent/patent foramen
ovale/PREVENTION/RECURRENCE/RISK/risk
factors/shunt/stroke/transcatheter closure/TRANSCRANIAL DOPPLER
ULTRASOUND
Gramzow, K., Kohler, A. and Podhaisky, H. (1999), Metabolic and haemostatic risk
factors in patients with extracranial atherosclerotic carotid disease. Herz
Kreislauf, 31 (1), 7-10.
Abstract: In 32 patients with TIA or minor stroke due to symptomatic exctracranial
carotid disease the atherogenic risk factors were analysed in comparison to a
healthy control group. The pathogenetic role of arterial hypertension and
smoking could be confirmed. Elevated levels of cholesterol, LDL-cholesterol,
Lp(a), apolipoprotein B in connection with reduced HDL- cholesterol
concentrations were found I;With regard to haemostatic variables the levels of
hematocrit fil,rinogen and PAI-I were increased. Concerning the stroke
prevention the modification of metabolic and haemostatic factors is of essential
importance
Keywords: arterial hypertension/ARTERY/carotid/carotid atherosclerotic
disease/cholesterol/control/HDL/HDL cholesterol/hemostatic
parameters/hypertension/LDL cholesterol/LDL-cholesterol/lipid
parameters/LIPOPROTEIN(A)/MR/PLAQUE/prevention/risk/risk
factors/smoking/STROKE/stroke prevention/TIA/ultrasonography
Barker, D.J.P. (2003), Coronary heart disease: A disorder of growth. Hormone Research,
59 35-41.
Abstract: A new 'developmental' model for the origins of coronary heart disease and the
related disorders of type 2 diabetes, hypertension and stroke is emerging. The
finding that people who develop these disorders have altered growth in utero,
during infancy and childhood provides a new starting point for research. The
immediate prospect for prevention is through protecting infant growth and
preventing accelerated weight gain in children made vulnerable to later disease
by small size at birth and during infancy. Ultimately we need to optimize
maternal diet and composition before and during pregnancy. Despite current
levels of nutrition in Western countries the nutrition of many fetuses and infants
remains suboptimal because the nutrients available are unbalanced or because
their delivery is constrained by the long and vulnerable fetal supply line.
Copyright (C) 2003 S. Karger AG, Basel
Keywords: ADULT LIFE/BIRTH-WEIGHT/BLOOD- PRESSURE/BODY-MASS
INDEX/CATCH-UP GROWTH/CHILDHOOD GROWTH/children/coronary
heart disease/developmental plasticity/diabetes/diet/disease/England/fetal and
childhood growth/heart/heart
disease/HORMONE/hypertension/IN-UTERO/infant/INFANT
GROWTH/INSULIN-RESISTANCE
SYNDROME/nutrients/nutrition/prevention/REDUCED FETAL
GROWTH/research/stroke/type 2 diabetes/weight
Love, B.B. and Biller, J. (1992), Therapeutic Options in Stroke Prevention. Hospital
Formulary, 27 (11), 1106-&.
Abstract: Recently, there have been several important advances in the area of stroke
prevention. Platelet antiaggregants are first- line agents for preventing stroke in
patients without evidence of cardiac embolization. Antiplatelet agents that are
beneficial include aspirin and ticlopidine. No benefit has been demonstrated with
dipyridamole, sulfinpyrazone, and pentoxifylline. Anticoagulants have been
proven to be effective in prevention of stroke in patients with non-valvular atrial
fibrillation. Guidelines for the surgical management of symptomatic carotid
stenosis have come from the results of the North American Symptomatic Carotid
Endarterectomy Trial, the European Carotid Surgery Trial, and the Veterans
Administration Cooperative Study. Patients with angiographically defined
symptomatic ipsilateral carotid stenosis greater-than-or-equal- to 70% have been
shown to benefit from carotid endarterectomy. Patients with 50%. This article reviews
these important advances in stroke prevention
Harbison, J.W. (1993), Ticlopidine and Stroke Prevention. Hospital Practice, 28 (9A),
20-22
McCrory, D.C. and Matchar, D.B. (1996), Stroke prevention: The emerging strategies.
Hospital Practice, 31 (3), 123-&.
Abstract: Warfarin prophylaxis in patients with non-valvular atrial fibrillation may be
one of the most valuable public-health interventions. Barriers to its optimal
utilization include wariness about bleeding complications and concern about age-
related sensitivity to the drug. The risks, however, may be minimized by creation
of anticoagulation clinics to ensure optimal dosing and follow-up
Keywords: anticoagulation/atrial
fibrillation/COMPLICATIONS/fibrillation/POLICY/prevention/prophylaxis/RIS
K-FACTORS/Warfarin
Benfante, R. (1992), Studies of Cardiovascular-Disease and Cause-Specific Mortality
Trends in Japanese-American Men Living in Hawaii and Risk Factor
Comparisons with Other Japanese Populations in the Pacific Region - A Review.
Human Biology, 64 (6), 791-805.
Abstract: The Honolulu Heart Program (HHP) is a long-term prospective epidemiologic
study of cardiovascular disease (CVD) in male descendants of Japanese migrants
to Hawaii. The article is a review of data from recent and past HHP studies
relevant to the Seventeenth Pacific Science Congress symposium "Changes in
Disease Patterns in the Western Pacific and Southeast Asia." The Ni-Hon-San
Study, which compared CVD rates and risk factors in Japanese men living in
Japan, Hawaii (HHP), and California, showed that coronary heart disease (CHD)
and stroke mortality rates in Hawaii were intermediate between rates in Japan
and California. Gradients in CVD risk factors were similar to the gradients in
disease rates. From 1966 to 1984 trends in incidence rates for CHD, stroke, and
cause-specific mortality were compared for the 8006 participants and 3130
nonparticipants in the HHP. CHD and stroke rates declined by about 40% for the
total HHP cohort. There was a larger decline for CHD mortality (over 60%) in
the nonparticipants. There was also a much greater decline in total mortality and
cancer mortality rates in the nonparticipants. The results of the reviewed studies
show that the subjects, although sharing a common ethnic background,
experience different rates of disease when living in diverse geographic and
cultural locales. This finding supports evidence that environmental and
behavioral factors influence chronic disease rates and provides a basis for
intervention and prevention. The finding that nonparticipants in epidemiologic
studies can show different incidence trends suggests that caution should be used
in interpreting trends limited only to participants
Keywords: ACCULTURATION/CALIFORNIA/CARDIOVASCULAR
DISEASE/CORONARY
HEART-DISEASE/DIET/HEALTH/HEART/JAPANESE
ANCESTRY/MORTALITY RATES/PREVALENCE/RISK
FACTORS/STROKE/TRENDS
Stamler, J. (1991), Blood-Pressure and High Blood-Pressure - Aspects of Risk.
Hypertension, 18 (3), 95-107.
Abstract: This report deals with three aspects of risk related to blood pressure and high
blood pressure. The first aspect of risk concerns distributions of systolic blood
pressure (SBP) and diastolic blood pressure (DBP) in the adult population and
their relation to long-term risk of morbidity and mortality. By middle age, only a
minority (about 20%) of Americans have optimal SBP and DBP levels, 20 cigarettes/day vs. never-smokers was found for total stroke (relative risk
(RR)=1.6 (95% confidence interval (CI), 1.1- 2.4)). The excess risk of total
stroke was particularly evident among hypertensives (RR=2.3 (1.2-4.4)). The
multivariate RR of ischemic stroke was 1.6 (1.0-2.5) for total subjects, and 2.2
(1.0-5.0) among hypertensives. Significant excess risks among current smokers
of >20 cigarettes/day vs. never-smokers were also found for coronary heart
disease (RR=4.6 (1.6-12.9)) and total cardiovascular disease (1.9 (1.3-2.7)). The
estimated proportion of the events attributable to current smoking was 30 (95%
Cl, 11-44)% for total stroke and 34 (5-54)% for coronary heart disease. In
conclusion, current smoking of >20 cigarettes per day increased the risk of both
total stroke and ischemic stroke among Japanese middle-aged men, and
particularly among middle-aged hypertensive men
Keywords: age/aged/cardiovascular/cardiovascular disease/cardiovascular
risk/cardiovascular risk factors/CEREBRAL-
HEMORRHAGE/CEREBROVASCULAR-DISEASE/cigarette
smoking/CIGARETTE-SMOKING/coronary heart disease/CORONARY
HEART-DISEASE/disease/FOLLOW-UP/follow-up
studies/HAWAII/heart/heart
disease/hemorrhagic/history/HYPERTENSION/ischemic/ischemic
stroke/Japan/JAPANESE/JAPANESE MEN/LIFE/men/middle-aged
men/MYOCARDIAL-INFARCTION/POPULATION/PREVENTION/prospecti
ve study/relative risk/risk/risk factors/risks/smoking/stroke
Floyd, R.A., Hensley, K., Forster, M.J., Kelleher-Anderson, J.A. and Wood, P.L. (2002),
Nitrones as neuroprotectants and antiaging drugs. Increasing Healthy Life Span:
Conventional Measures and Slowing the Innate Aging Process, 959 321-329.
Abstract: Specific nitrones have been used for more than 30 years in analytical
chemistry and biochemistry to trap and stabilize free radicals for the purpose of
their identification and characterization. PBN (alpha-phenyl-tert-butyl nitrone),
one of the more widely used nitrones for this purpose, has been shown to have
potent pharmacologic activities in models of a number of aging-related diseases,
most notably the neurodegenerative diseases of stroke and Alzheimer's disease.
Studies in cell and animal models strongly suggest that PBN has potent antiaging
activity. A novel nitrone, CPI-1429, has been shown to extend the life span of
mice when administration was started in older animals. It has also shown
efficacy in the prevention of memory dysfunction associated with normal aging
in a mouse model. Mechanistic studies have shown that the neuroprotective
activity of nitrones is not due to mass-action free radical- trapping activity, but
due to cessation of enhanced signal transduction processes associated with
neuroinflammatory processes known to be enhanced in several
neurodegenerative conditions. Enhanced neuroinflammatory processes produce
higher levels of neurotoxins, which cause death or dysfunction of neurons.
Therefore, quelling of these processes is considered to have a beneficial effect
allowing proper neuronal functioning. The possible antiaging activity of nitrones
may reside in their ability to quell enhanced production of reactive oxygen
species associated with age-related conditions. On the basis of novel ideas about
the action of secretory products formed by senescent cells on bystander cells, it is
postulated that nitrones will mitigate these processes and that this may be the
mechanism of their antiaging activity
Keywords: administration/aging/Alzheimer's
disease/animal/BRAIN/BUTYL-ALPHA-PHENYLNITRONE/CEREBRAL
ISCHEMIC-INJURY/death/disease/diseases/DMPO/drugs/free radical/free
radicals/learning/LIFE-SPAN/memory/neurons/NEW-YORK/nitrones/normal
aging/OXIDATIVE DAMAGE/OXIDE SYNTHASE
GENE/PBN/prevention/RADICAL- TRAPPING AGENT/SENESCENCE/signal
transduction/SPIN-TRAP/stroke
Dalal, P.M. (1997), Strokes in the elderly: prevalence, risk factors & the strategies for
prevention. Indian Journal of Medical Research, 106 325-332.
Abstract: Current demographic trends suggest that the Indian population will survive
through the peak years of occurrence of stroke (age 55-65 yr) and
stroke-survivors in the elderly with varying degree of residual disability, will be
a major medical problem, The available data from community surveys from
different regions of India for 'hemiplegia' presumed to be of vascular origin
indicate a crude prevalence rate in the range of 200 per 100,000 persons. Thus,
the anticipated costs of rehabilitation of stroke-victims will pose enormous
socio-economic burden an our meagre health-care resources, similar to what is
now faced by industrialised nations in the West. Therefore, prevention of strokes
at any age should be our main strategy in national health planning. Among all
risk factors for strokes, hypertension is one of the most important and treatable
factor. Community screening surveys, by well defined WHO protocol, have
shown that nearly 15 per cent of the urban population is 'hypertensive' (160/95
mm Hg or more). Though high blood pressure has the highest attributable risk
for stroke, there are many reasons such as patient's compliance in taking
medicines and poor follow up in clinical practice that may lead to failure in
reducing stroke mortality. In subjects who have transient ischaemic attacks
(TIAs), regular use of antiplatelet agents like aspirin in prevention of stroke is
well established. It is also mandatory to prohibit tobacco use and adjust dietary
habits to control body weight, and associated conditions like diabetes mellitus
etc., should be treated. It is advisable to initiate community screening surveys on
well defined populations for early detection of hypertension and TIAs. Primary
health care centres should be the base-stations for these surveys because data
gathered from urban hospitals will not truly reflect the crude prevalence rates for
the community to design practical prevention programmes
Keywords: age/ANTIOXIDANT/antiplatelet agents/aspirin/blood pressure/CEREBRAL
INFARCTION/cerebrovascular
disease/CEREBROVASCULAR-DISEASE/COMMUNITY/control/costs/detecti
on/diabetes/diabetes mellitus/elderly/FIBRINOLYTIC-ACTIVITY/health/health
care/HEMATOCRIT/high blood pressure/hypertension/hypertension
epidemiology/INDIA/INTERSALT/MORTALITY/POPULATION/prevention/r
ehabilitation/risk/risk factors/risk factors in stroke/stroke/stroke
prevention/strokes in elderly/tobacco/transient/vascular/YOUNG
Mayer, S.A. (2002), Intracerebral hemorrhage: natural history and rationale of
ultra-early hemostatic therapy. Intensive Care Medicine, 28 S235-S240.
Abstract: Stroke is a major health problem worldwide, causing high morbidity and
mortality. Intracerebral hemorrhage (ICH) accounts for 15% of stroke cases in
the US and Europe and up to 30% in Asian populations. It is less treatable than
other forms of stroke and causes higher morbidity and disability. Data suggest
that early hematoma growth is the principal cause of early neurological
deterioration after ICH. Prospective and retrospective studies indicate that early
hematoma growth occurs in 18-38% of patients scanned within 3 h of ICH onset,
and that hematoma volume is an important predictor of 30-day mortality. As
hematoma growth in acute ICH is a dynamic process, intervention with
ultra-early hemostatic therapy could lead to minimization and even prevention of
early hematoma growth. Recombinant activated factor VII (rFVIIa, 'NovoSeven'),
a powerful initiator of hemostasis, is approved for the treatment of bleeding in
patients with hemophilia and inhibitors and may also promote hemostasis in
patients with normal coagulation. rFVIIa acts locally at the bleeding site without
activating systemic coagulation and may be a valuable therapy during the
hyperacute stage of ICH. A randomized, double-blind, placebo-controlled,
dose-ranging trial is currently in progress to investigate the potential of rFVIIa as
an ultra-early hemostatic therapy to prevent or minimize hematoma growth in
ICH patients without coagulopathy
Keywords: acute/bleeding/BLOOD-FLOW/CARE/causes/CEREBRAL-
HEMORRHAGE/CHRISTMAS DISEASE/coagulation/CONTROLLED
TRIAL/disability/DOUBLE-BLIND/early hematoma
growth/Europe/health/hematoma/HEMATOMA
ENLARGEMENT/hemorrhage/hemostasis/history/intracerebral
hemorrhage/morbidity/morbidity and mortality/mortality/natural
history/NEW-YORK/NovoSeven/prevention/randomized/RECOMBINANT
FACTOR VIIA/rFVIIa/STROKE/therapy/TIME-COURSE/TRANEXAMIC
ACID/treatment/trial/US/USA
Okada, M., Miida, T., Hama, H., Yata, S., Sunaga, T., Tsuda, A. and Saito, H. (2000),
Possible risk factors of carotid artery atherosclerosis in the Japanese population:
A primary prevention study in non-diabetic subjects. Internal Medicine, 39 (5),
362-368.
Abstract: Objective Hyperinsulinemia has been associated with the risk of coronary
heart disease, stroke, and renal disease in nondiabetic subjects. However, direct
evidence that hyperinsulinemia per se is directly associated with atherosclerosis
has been conflicting. The present study was designed to investigate the
cross-sectional association of carotid artery atherosclerosis with insulin,
independent of well-known cardiovascular risk factors, in nondiabetic subjects.
Methods and Subjects Between 1996 and 1997, 1,335 subjects (620 men and 715
women) were recruited from one Japanese community, interviewed, and
examined. Clinical measurements in the study included intimal-medial thickness
(IMT) of the carotid artery, fasting plasma insulin, serum total cholesterol (TC),
triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), low-density
lipoprotein cholesterol (LDL-C), fasting plasma glucose (FPG), hemoglobin type
HbA(1c), systolic blood pressure (SBP), diastolic blood pressure (DBP), and
body mass index (BMI). We divided the subjects of both genders into three
subgroups according to age (40-49 years of age; 50-59; and 60-69). Results
Using simple regression analysis, we found that IMT was significantly correlated
with at least one of TC, LDL-C, HbA(1c), SBP, DBP, and BMI in each subgroup.
The results of multivariate analysis showed that IMT was independently
correlated with TC, HDL-C, LDL-C, SEP and BMI in males and with TC, TG,
HDL-C, LDL-C, HbA(1c), SEP, DBP, and BMI in females. Insulin levels
showed no correlation with IMT in either males or females. Conclusion Fasting
hyperinsulinemia does not appear to be correlated with carotid artery
atherosclerosis based on the present cross- sectional results
Keywords: age/atherosclerosis/blood pressure/body mass index/body mass index
(BMI)/cardiovascular/cardiovascular risk/cardiovascular risk
factors/CARDIOVASCULAR-DISEASE/carotid/carotid
artery/cholesterol/community/coronary heart disease/CORONARY
HEART-DISEASE/cross-sectional study/diastolic blood
pressure/disease/GLUCOSE/heart/heart disease/HELSINKI
POLICEMEN/hemoglobin/high density lipoprotein/high-density lipoprotein
cholesterol
(HDL-C)/hyperinsulinemia/HYPERINSULINEMIA/INSULIN-RESISTANCE
SYNDROME/INTERNAL/intimal-medial thickness (IMT)/JAPAN/low density
lipoprotein/low-density lipoprotein cholesterol
(LDL-C)/MEDICINE/MELLITUS/men/MIDDLE- AGED MEN/multivariate
analysis/population/prevention/primary/primary prevention/renal/renal
disease/risk/risk factors/SENSITIVITY/serum/stroke/systolic blood
pressure/WALL THICKNESS/women
Yasaka, M., Minematsu, K. and Yamaguchi, T. (2001), Optimal intensity of
international normalized ratio in warfarin therapy for secondary prevention of
stroke in patients with non-valvular atrial fibrillation. Internal Medicine, 40 (12),
1183-1188.
Abstract: Objective To determine optimal intensity of international normalized ratio
(INR) of warfarin therapy for the prevention of ischemic events in patients with
non-valvular atrial fibrillation (NVAF), we evaluated the risk of severe recurrent
stroke, systemic embolism and major hemorrhagic complications according to
INR and age. Methods We carried out the National Cardiovascular Center
(NCVC) NVAF Secondary Prevention Study and analyzed data with those of
Japanese Nonvaluvular Atrial Fibrillation-embolism Secondary Prevention
Cooperative Study to elucidate relationships of major stroke and hemorrhage
with INR and age. In both studies, all patients with cardioembolic stroke were
given warfarin, monitored with INR every month, and followed up for primary
endpoints of stroke and embolism to other parts of the body, and for secondary
endpoints of major hemorrhagic complications requiring blood transfusion or
hospitalization. We regarded ischemic stroke with NIH stroke scale (NIHSS)
score greater than or equal to10 or systemic embolism as a major ischemic event
and ischemic stroke with NIHSS score 41 different criteria reported. These specific
laboratory variations can affect those patients considered appropriate for CEA.
Conclusions. This study highlights the most significant areas for future
standardisation to be Doppler angle and interpretation criteria, if CDUS is to be a
primary tool in recommending patients for CEA, when indicated by clinical trial
results
Keywords: carotid/carotid artery disease/carotid stenosis/carotid stenosis
ultrasonography/Doppler/duplex/endarterectomy/England/evaluation/interpretati
on/prevention/primary/protocols/stroke/stroke
prevention/surgery/ultrasonography/ultrasound/vascular
Migdalis, I.N., Varvarigos, N., Charalabides, J., Leontiades, E., Gerolimou, B.,
Mantzara, F. and Karmaniolas, K. (2001), Effect of buflomedil on early carotid
atherosclerosis in type 2 diabetic patients. International Angiology, 20 (2),
126-130.
Abstract: Background. An increased thickness of the carotid artery wall is thought to be
a sign of early atherosclerosis. We have investigated the effect of early treatment
with buflomedil on the prevention of the arterial wall thickening. Methods.
Eighty patients with Type 2 diabetes were studied. Oral buflomedil (600 mg once
daily) was administered for 12 months in 42 patients randomly selected, while 38
received no treatment. The two groups were matched for age, sex, body mass
index (BMI), duration of diabetes and glycaemic control. Arterial wall thickness
was measured as the mean of the maximum intima media thickness (IMT) in 8
carotid segments measured by B-mode ultrasound. Results. Blood pressure and
lipid levels remained unchanged in the two studied groups while no difference
was found in metabolic control between them. The IMT increase over 12 months
was 0.04 mm in the buflomedil group whereas in that without buflomedil it was
0. 10 mm. Conclusions. We conclude that buflomedil treatment may be useful in
decreasing the progression rate of arterial wall thickness
Keywords: administration and dosage/age/arterial wall/ARTERIAL-
WALL/ASYMPTOMATIC HYPERGLYCEMIA/atherosclerosis/body mass
index/carotid/carotid artery/carotid artery
diseases/CHOLESTEROL/control/diabetes/diabetes
mellitus/HYPERLIPIDEMIA/MYOCARDIAL-INFARCTION/non insulin
dependent/pathology/PLUS MEDIAL
THICKNESS/POPULATION/prevention/RISK-FACTORS/sex/STROKE/treatm
ent/ultrasound/vasodilator agents/WALL THICKNESS
Pflieger, K.L., Treiber, F.A., Davis, H., Mccaffrey, F.M., Raunikar, R.A. and Strong,
W.B. (1994), The Effect of Adiposity on Childrens Left-Ventricular Mass and
Geometry and Hemodynamic-Responses to Stress. International Journal of
Obesity, 18 (2), 117-122.
Abstract: This study evaluated the relationship between adiposity, left ventricular mass
and geometry, and haemodynamic parameters at rest and during laboratory
stressors in a sample of 69 normotensive children with positive family histories
of essential hypertension. Children were classified as overweight if they were
above the 85th percentile of weight-for-height for their age and gender compared
to national normative data. Nineteen children (7 whites, 12 blacks) were
classified as overweight and the remaining 50 (26 whites, 24 blacks) were not
overweight. Overweight children were found to have higher resting systolic and
diastolic blood pressures, heart rates (HR), cardiac output (CO) and stroke
volumes (SV), and lower resting total peripheral resistance than the
non-overweight children. No differences were noted in haemodynamic reactivity
to the stressors. Echocardiographic findings indicated that the overweight
children had greater left ventricular mass indexed by height(2.7), interventricular
septal thickness and left ventricular end diastolic diameter (LVEDD) compared
to non- overweight children. These findings are the first to indicate that the
higher resting pressures of overweight normotensive children are a reflection of
increased preload (i.e. greater HR, SV, CO, LVEDD). These findings point out
the early deleterious effects of obesity on the cardiovascular system in the young
and highlight the need for effective obesity prevention and intervention
programmes
Keywords: ADIPOSITY/ADOLESCENTS/ADULTS/BLOOD-PRESSURE
RESPONSE/CARDIAC-OUTPUT/CARDIOVASCULAR
REACTIVITY/CARDIOVASCULAR
RESPONSE/CHILDHOOD/ENGLAND/ESSENTIAL-
HYPERTENSION/HEALTHY-CHILDREN/heart/hypertension/HYPERTROPH
Y/LEFT VENTRICULAR MASS/M-MODE
ECHOCARDIOGRAPHY/OBESITY/prevention/RISK-FACTORS/STRESS/str
oke/SYSTOLIC FUNCTION
Khaspekov, L.G., Lyzhin, A.A., Victorov, I.V., Dupin, A.M. and Erin, A.N. (1995),
Hypoxic and Posthypoxic Neuronal Injury in Hippocampal Cell- Culture -
Attenuation by Lipophylic Antioxidant U-18 and Superoxide-Dismutase.
International Journal of Neuroscience, 82 (1-2), 33-45.
Abstract: The neuroprotective effects of synthesized lipophylic antioxidant from
hindered phenol class (U-18) and hydrophylic antioxidative enzyme superoxide
dismutase (SOD) were tested on long-term mouse hippocampal cell cultures
exposed to hypoxia/reoxygenation. The application of U-18 to the cultures
during 6-8 hr hypoxia followed by 16-18 hr reoxygenation in the absence of
antioxidant significantly reduced neuronal death. Thus, lipophylic free radical
scavenger may exert a delayed neuroprotective effect, probably owing to
persistent incorporation into phospholipid membranes and prevention of their
lipid peroxidation by means of prolonged intramembranous free radical
quenching. On the other hand, the exposure of the cultures to U-18 during 15 hr
hypoxia without subsequent reoxygenation also led to significant reduction of
neuronal death compared with that observed without antioxidant. These findings
suggest that free radical neuronal damage may occur under conditions of
prolonged restricted oxygen access to the neurons. The hypoxic/posthypoxic
neuronal injury significantly decreased in the cultures exposed to hydrophylic
cytoplasmic enzyme SOD (300 U/ml). The neuroprotective effects of both
lipophylic U-18 and hydrophylic SOD on the cultures exposed to
hypoxia/reoxygenation might reflect the damaging free radical overproduction in
different morphofunctional compartments of the nerve cell
Keywords:
ACID/ANTIOXIDANTS/DEATH/ENGLAND/GLUCOSE/HIPPOCAMPAL
CELL CULTURE/HYPOXIA
REOXYGENATION/LIPID-PEROXIDATION/MECHANISMS/NERVOUS-S
YSTEM
TRAUMA/neurons/NEUROTOXICITY/OXYGEN/prevention/RADICAL
FORMATION/STROKE
Gulliford, M.C. (1995), Controlling Non-Insulin-Dependent Diabetes-Mellitus in
Developing-Countries. International Journal of Epidemiology, 24 S53-S59.
Abstract: The epidemiological transition has brought an increasing burden of chronic
non-communicable disorders to middle- and even low- income countries. This
paper reviews the problem with particular reference to non-insulin-dependent
diabetes mellitus (NIDDM) in the English-speaking Caribbean region. Surveys
conducted over the last three decades have documented a high prevalence of
NIDDM in a number of communities and evidence has accumulated to support
the control of obesity and physical inactivity in the primary prevention of
non-insulin-dependent diabetes. The problem of introducing and monitoring
suitable interventions on a long-term basis in high-risk populations in different
cultures has yet to be addressed. The impact of diabetes on health status in
developing countries has not been well documented but it is clear that there are
high levels of acute illness from disorders of glycaemic control, long-term
disability from blindness and limb amputation and premature mortality from
stroke, coronary heart disease and renal disease. Present evidence suggests that
improving the quality of preventive clinical management can be the most
immediately productive approach to controlling health problems from diabetes.
Achieving this objective within the social, organizational and resource
constraints of the Caribbean presents a range of problems. identifying the most
cost- effective means of improving existing services is therefore the most
immediate research priority for NIDDM in the English- speaking countries of the
Caribbean
Keywords: BLOOD-PRESSURE/coronary heart disease/CORONARY
HEART-DISEASE/COSTS/diabetes
mellitus/ENGLAND/HEALTH/heart/IMPAIRED
GLUCOSE-TOLERANCE/mortality/NIDDM/prevention/primary
prevention/RESISTANCE
SYNDROME/RETINOPATHY/STRATEGIES/stroke/TRINIDAD
Chao, C.K.S., Grigsby, P.W., Perez, C.A., Camel, H.M., Kao, M.S., Galakatos, A.E. and
Boyle, W.A. (1995), Brachytherapy-Related Complications for Medically
Inoperable Stage-I Endometrial Carcinoma. International Journal of Radiation
Oncology Biology Physics, 31 (1), 37-42.
Abstract: Purpose: The current study was conducted to investigate the incidence and risk
factors for medical complications associated with low dose rate brachytherapy in
patients with medically inoperable Stage I endometrial cancer treated with
irradiation alone. Methods and Materials: From 1965 through 1991 at
Mallinckrodt Institute of Radiology, 150 implants were performed on 96 patients
who were deemed medically unfit for hysterectomy because of advanced age,
obesity, and various medical problems. The records of these patients were
examined retrospectively to determine the incidence of medical complications
that occurred in the first 30 days following the initiation of brachytherapy. The
association of risk factors that precluded major surgery and the occurrence of
brachytherapy-related complications was examined by logistic regression.
Results: Of these 96 patients, 40 patients were older than 75 years, and 31
patients were deemed morbidly obese. Medical problems included hypertension
in 45 patients, and diabetes in 37; there was a history of congestive heart failure
in 23, stroke in 11, myocardial infarction in 10, and thromboembolism in 8.
There were concurrent malignancies in five patients. Implants were performed
using intrauterine Simon-Heyman capsules, tandems, and vaginal ovoids in all
patients. General anesthesia was used for 98 implants, spinal anesthesia for 26,
local anesthesia for 25, and epidural anesthesia for 1. The duration of anesthesia
ranged from 30 to 120 min (median, 60 min). The duration of radioisotope
application ranged from 11 to 96 h (median, 46 h). Preventive measures included
low dose subcutaneous heparin in 55 patients (since 1978), and intermittent
pneumatic compression boots in 29 (since 1985). Four patients developed
life-threatening complications including myocardial infarction (two patients),
congestive heart failure (one patient), and pulmonary embolism (one patient).
Two of these four patients died; one with a myocardial infarction and the other
with pulmonary embolism. The morbidity rate was thus 4.2% (4 out of 96), and
the mortality was 2.1% (2 out of 96). Although the four serious complications
occurred within 30 days of the procedure, only one complication and one death
occurred during treatment. There was no correlation between occurrence of
complications and medical risk factors, type and duration of anesthesia, or type
and duration of implant. Conclusions: There is a low incidence of complications
associated with conventional low dose rate brachytherapy. The procedure is well
tolerated in patients with medically inoperable Stage I endometrial cancer. In
comparison to the predicted serious complication rate of surgery in these patients,
the number of life-threatening complications from brachytherapy appears to be
quite acceptable
Keywords:
ADENOCARCINOMA/ANESTHESIA/BRACHYTHERAPY/COMPLICATIO
NS/COMPRESSION/DEEP-VEIN THROMBOSIS/ENDOMETRIAL
CARCINOMA/ENGLAND/heart/heparin/history/hypertension/incidence/morbid
ity/MORTALITY/myocardial infarction/MYOCARDIAL-
INFARCTION/OBESITY/PREVENTION/pulmonary embolism/RADIATION
THERAPY/risk/risk
factors/stroke/SURGERY/thromboembolism/treatment/VENOUS
THROMBOEMBOLISM
Yoshida, M., Nakamura, Y., Higashikawa, M. and Kinoshita, M. (1996), Predictors of
ischemic stroke in non-rheumatic atrial fibrillation. International Journal of
Cardiology, 56 (1), 61-70.
Abstract: We retrospectively analyzed the clinical features of patients with
non-rheumatic atrial fibrillation to identify risk factors of ischemic stroke.
Non-rheumatic atrial fibrillation is associated with an increased risk of ischemic
stroke. However, the predictors of ischemic stroke in non-rheumatic atrial
fibrillation are unclear. The study population consisted of 122 patients with
non-rheumatic atrial fibrillation who had no previous clinical cerebral strokes at
the start of the follow- up. Patients with cardiomyopathy and paroxysmal or
intermittent atrial fibrillation were excluded from the study. The mean age was
61.7+/-12.8 years. We defined two endpoints; namely, occurrence of ischemic
stroke (endpoint 1), and ischemic stroke or cardiac death (endpoint 2). During
the follow-up, 18 patients had ischemic stroke and 6 patients experienced cardiac
death. The 5-year event-free rates for endpoints 1 and 2 were 87.4% and 85.0%,
respectively. A Cox analysis revealed that endpoint 1 was significantly
associated with age (risk ratio (RR)=1.106, P=0.0052), end-diastolic left
ventricular dimension (RR=0.882, P=0.0393), end-systolic left ventricular
dimension (RR=1.149, P=0.0323) and the thickness of the interventricular
septum (RR=1.493, P=0.0111). Endpoint 2 was associated with age (RR=1.122,
P=0.0004), left atrial dimension (RR=1.057, P=0.0666), end-diastolic left
ventricular dimension (RR=0.935, P=0.0426), fractional shortening (RR=0.880,
P=0.0001) and the thickness of the left ventricular posterior wall (RR=1.644,
P=0.0004). The present results suggest that, in addition to left ventricular
dimensions and left atrial dimension, left ventricular hypertrophy may be
associated with ischemic stroke
Keywords: FRAMINGHAM/INTERNAL/ischemic stroke/non-rheumatic atrial
fibrillation/predictors/PREVENTION/RISK/risk factors/stroke/SYSTEMIC
EMBOLIZATION/THROMBOEMBOLIC COMPLICATIONS/WARFARIN
Schulzer, M. and Mancini, G.B.J. (1996), 'Unqualified success' and 'unmitigated failure':
Number-needed- to-treat-related concepts for assessing treatment efficacy in the
presence of treatment-induced adverse events. International Journal of
Epidemiology, 25 (4), 704-712.
Abstract: Background. Common indices for the quantal assessment of treatment efficacy
are reviewed, The absolute risk reduction is a practical index for public health
considerations. Its reciprocal has been termed the 'Number Needed to Treat'
(NNT), representing the health effort that must on average be expended to
accomplish one tangible treatment target. We extend the NNT to evaluate
outcome combinations of treatment benefits versus treatment harms. Methods.
We describe the mathematical context of the NNT, and extend it to evaluate
outcome combinations (treatment success/failure with/without treatment-induced
adverse effects) in a treated population. These extensions are carried out
assuming either independence or positive association between treatment benefit
and treatment harm. A method is provided for calculating the standard errors of
these extended NNT values. Applications to cost-effectiveness analysis are
discussed. Results. We calculate NNT in three recent therapeutic studies. The
results of a trial of the prevention of strokes with warfarin in patients with non-
valvular atrial fibrillation are analysed to evaluate treatment success (stroke
prevention) against treatment-induced bleeds. An NNT-related cost-benefit
analysis is also carried out. We also analyse the results of a study of two
modalities of chemotherapeutic treatment in small-cell lung cancer, and of two
modalities of surgical intervention in the treatment of cholelithiasis. Conclusions.
The NNT are useful in direct evaluation of outcome-specific treatment benefits
versus treatment-induced harms. They may also be used in cost- effectiveness
analyses and are helpful in guiding public health programmes towards the
identification of optimal treatment strategies
Keywords: adverse events/atrial
fibrillation/ATRIAL-FIBRILLATION/BRITISH/CHOLECYSTECTOMY/GOL
D STANDARD/health/NNT/PERSPECTIVE/stroke/STROKE
PREVENTION/treatment/treatment efficacy/warfarin
Kuzniar, J., Splawinska, B., Malinga, K., Mazurek, A.P. and Splawinski, J. (1996),
Pharmacodynamics of ticlopidine: Relation between dose and time of
administration to platelet inhibition. International Journal of Clinical
Pharmacology and Therapeutics, 34 (8), 357-361.
Abstract: In spite of long clinical experience with ticlopidine (T) knowledge of its
pharmacodynamics is limited. In this study relation between dose and time of
administration of T to platelet inhibition was investigated in 62 healthy
volunteers ex vivo in whole blood and platelet rich plasma. Gender-related
sensitivity of platelets to ticlopidine was also evaluated. Inhibition of
ADP-induced platelet aggregation by T, 500 mg, daily, was almost identical in
both sexes. 100 mg daily did not inhibit ADP-induced platelet aggregation even
after 14 days of administration. 250 mg daily induced strong inhibition on day 5
of administration comparable to the inhibition obtained with 500 mg daily dose.
The antiplatelet (ADP) effect of T (500 mg, daily) was present on day 2-3 and
full inhibitory effect on day 4 of administration. T-1/2 of antiplatelet (ADP)
activity of T was 5.3 days and full recovery of platelets activity 11-13 days. No
rebound phenomenon was present. T (regardless the dose) inhibited platelet
aggregation induced by small but not high concentrations of collagen and was
without effect on arachidonic acid-induced platelet aggregation. Therefore, T is
not suitable for treatment of acute event, 250 mg daily dose should be used
especially for combination with other drugs and 11 days washout interval seems
necessary to change the treatment or to perform surgery
Keywords: ADP/aggregation/ASPIRIN/pharmacodynamics/platelet
aggregation/platelets/PREVENTION/STROKE/ticlopidine/treatment
Muller, T. (1997), Pharmacological rationale for stroke prevention with acetylsalicylic
acid (ASA) and dipyridamole combined. International Journal of Clinical
Practice, 6-13.
Abstract: The Second European Stroke Prevention Study (ESPS-2) has demonstrated
equivalent efficacy in secondary stroke prevention for acetylsalicylic acid (ASA,
25 mg bid) and dipyridamole (modified-release preparation, 200 mg bid).
Combining both agents is twice as effective and sets a new standard in this
therapeutic area. The pharmacological effects of these treatments were
investigated in a randomised, double-blind, clinical pharmacology trial before
ESPS-2. The inhibition of mural platelet thrombus formation by treatment with
ASA, modified-release dipyridamole (DP), their combination, and placebo (using
doses and preparations identical to ESPS-2) was investigated ex vivo using blood
samples collected both before and 2 hours after a 3.5-day treatment in 96 healthy
subjects. Significant inhibition of platelet thrombus formation was observed for
both ASA and DP The size of all thrombi was reduced by similar to 45% with
ASA (p 0.98 for men and > 0.91 for women). The estimated percentage rate of
coronary heart disease (CHD, P 140/90 mm Hg; manage elevated lipids by diet,
exercise, and cholesterol-lowering medications (if necessary); treat diabetes; lose
weight so that BMI is 25
(RR = 0.71, 95% CI : 0.51-0.99) or current smokers (RR = 0.40, 95% CI :
0.18-0.86) comparing highest to the lowest categories of intake. Conclusions Our
results suggest an inverse association between vegetable intake and risk of CHD.
These prospective data support current dietary guidelines to increase vegetable
intake for the prevention of CHD
Keywords: age/aged/alcohol/angioplasty/antioxidants/aspirin/beta
carotene/beta-carotene/body mass index/bypass
grafting/cancer/carotenoids/carotenoids
antioxidants/CHD/cholesterol/CONSUMPTION/coronary angioplasty/coronary
heart disease/diabetes/diet/dietary
guidelines/disease/ENGLAND/FIBER/FRUIT/guidelines/heart/heart
disease/history/hypertension/infarction/men/MORTALITY/myocardial/myocardi
al infarction/physical activity/POPULATION/prevention/prospective
study/QUESTIONNAIRE/randomized/randomized trial/relative
risk/risk/smoking/stroke/treatment/trial/US/US MEN/use/vegetable/vegetables
Paffenbarger, R.S., Blair, S.N. and Lee, I.M. (2001), A history of physical activity,
cardiovascular health and longevity: the scientific contributions of Jeremy N
Morris, DSc, DPH, FRCP. International Journal of Epidemiology, 30 (5),
1184-1192.
Abstract: Since Hippocrates first advised us more than 2000 years ago that
exercise-though not too much of it-was good for health, the epidemiology of
physical activity has developed apace with the epidemiological method itself. It
was only in the mid-20th century that Professor Jeremy N Morris and his
associates used quantitative analyses, which dealt with possible selection and
confounding biases, to show that vigorous exercise protects against coronary
heart disease (CHD). They began by demonstrating an apparent protection
against CHD enjoyed by active conductors compared with sedentary drivers of
London double-decker buses. In addition, postmen seemed to be protected
against CHD like conductors, as opposed to less active government workers. The
Morris group pursued the matter further, adapting classical infectious disease
epidemiology to the new problems of chronic, non-communicable diseases.
Realizing that if physical exercise were to be shown to contribute to the
prevention of CHD, it would have to be accomplished through study of
leisure-time activities, presumably because of a lack of variability in intensities
of physical work. Accordingly, they chose typical sedentary middle-management
grade men for study, obtained 5-minute logs of their activities over a 2-day
period, and followed them for non-fatal and fatal diseases. In a subsequent study,
Morris et al. queried such executive-grade civil servants by detailed mail-back
questionnaires on their health habits and health status. They then followed these
men for chronic disease occurrence, as in the earlier survey. By 1973 they had
distinguished between 'moderately vigorous' and 'vigorous' exercise. In both of
these civil service surveys, they demonstrated strong associations between
moderately vigorous or vigorous exercise and CHD occurrence, independent of
other associations, in age classes 35-64 years. In the last 30 years, with
modern-day computers, a large number of epidemiological studies have been
conducted in both sexes, in different ethnic groups, in broad age classes, in a
variety of social groups, and on most continents of the world. These studies have
extended and amplified those of the Morris group, thereby helping to solidify the
cause-and-effect evidence that exercise protects against heart disease and averts
premature mortality
Keywords: ACUTE MYOCARDIAL-INFARCTION/age/all-cause
mortality/ALUMNI/cardiovascular/cardiovascular health/chronic
disease/coronary heart disease/CORONARY HEART-DISEASE/DEPENDENT
DIABETES-MELLITUS/disease/diseases/ENGLAND/epidemiology/ethnic
groups/exercise/exercise science/EXERTION/health/heart/heart
disease/history/incidence rates/LEISURE-TIME/longevity/medical
history/men/mortality/non-communicable diseases/physical
activity/PREVENTION/prospective cohort studies/PROTECTION/social
medicine/status/STROKE/survey/VIGOROUS EXERCISE
Sleight, P. (2001), Future perspectives and implications. International Journal of
Clinical Practice, 22-23.
Abstract: Over a 4.5 year follow-up period, the HOPE (Heart Outcomes Prevention
Evaluation) trial, and the MICRO-HOPE (Microalbuminuria, Cardiovascular,
and Renal Outcomes) and SECURE (Study to Evaluate Carotid Ultrasound
changes in patients treated with Ramipril and vitamin E) substudies have all
demonstrated a large benefit of ramipril versus placebo in patients over 55 years
at high risk (by reason of a prior vascular event), or by being diabetic subjects
with one additional risk factor. The baseline blood pressure on average was
normal, at 139/79 mmHg, and was modestly reduced by 3.3/1.4 mmHg. Patients
with known left ventricular dysfunction were excluded, as were those with
uncontrolled hypertension. The incidence of stroke was reduced by 32%,
myocardial infarction by 20% and cardiovascular death by 25%. The benefits
conferred were in addition to, and largely independent of, other conventional
treatments such as aspirin, lipid-lowering agents, beta -blockers, diuretics and
calcium channel blockers. The relative risk reduction was very similar whether
or not the patient was a known hypertensive at baseline. High dose ACE
inhibition with ramipril is applicable to a far wider population of patients at high
risk of cardiovascular events than the current indications of hypertension and left
ventricular dysfunction
Keywords: aspirin/blood pressure/calcium/calcium channel/calcium channel
blockers/cardiovascular/cardiovascular events/death/diuretics/England/high
risk/hypertension/incidence/infarction/left ventricular/left ventricular
dysfunction/lipid lowering/lipid-lowering/myocardial/myocardial
infarction/population/Ramipril/relative risk/risk/risk
factor/stroke/trial/vascular/vascular event/vitamin E
Diener, H.C., Darius, H., Bertrand-Hardy, J.M. and Humphreys, M. (2001), Cardiac
safety in the European Stroke Prevention Study 2 (ESPS2). International Journal
of Clinical Practice, 55 (3), 162-163.
Abstract: The second European Stroke Prevention Study investigated the prevention of
stroke and/or death in 6602 patients with transient ischaemic attack or stroke
with aspirin (25 mg b.d.), dipyridamole (400 mg b.d,), the combination of aspirin
and dipyridamole or placebo. This post hoc analysis investigated cardiac events
in patients with coronary heart disease or myocardial infarction (MI) at entry.
Dipyridamole did not result in a higher number of cardiac events, e,g, angina
pectoris, MI, or death from all causes. The combination of aspirin plus
dipyridamole was superior to either drug alone in the prevention of stroke
Keywords: angina/angina pectoris/aspirin/cardiac/causes/combination/coronary heart
disease/death/DIPYRIDAMOLE/disease/ENGLAND/Germany/heart/heart
disease/infarction/ischaemic/myocardial/myocardial
infarction/prevention/safety/stroke/transient/transient ischaemic attack
Gupta, A. and Thomas, P. (2002), Stroke prevention: Missed opportunities?
International Journal of Clinical Practice, 56 (5), 338-341.
Abstract: Identification and modification of risk factors can prevent strokes. Certain
previously unidentified risk factors for stroke can become apparent following
admission with acute stroke. The aim of the study was to investigate the prior
capture, identification and management of modifiable risk factors for stroke in
patients admitted to a hospital following acute stroke. One hundred consecutive
stroke patients admitted to a UK hospital were prospectively assessed for
modifiable risk factors. The extent of pre-admission risk factor management was
also determined. Pre-admission risk factors identified and effectively managed
were hypertension in non- diabetics (28%), hypertension in diabetics (7%),
previous cerebrovascular event (100%), diabetes (29%), smoking (50%
counselled), atrial fibrillation (81%), hypercholesterolaemia (100%), excess
alcohol (22% counselled) and obesity (52% counselled). Twenty-five new
modifiable risk factors were identified following incident stroke. In conclusion, a
significant number of patients admitted with acute stroke have their risk factors
poorly identified and controlled in the community. Despite the trial evidence
available, an evidence- practice gap exists and many stroke prevention
opportunities are being missed
Keywords: acute/acute stroke/alcohol/atrial/atrial
fibrillation/ATTITUDES/cerebrovascular/cerebrovascular event/CLINICAL
GUIDELINES/community/diabetes/ENGLAND/fibrillation/hospital/hypercholes
terolaemia/HYPERTENSION/MANAGEMENT/obesity/prevention/RISK/risk
factor/risk factors/risk factors for stroke/smoking/stroke/stroke patients/stroke
prevention/trial
Jabbour, S., Reddy, K.S., Muna, W.F.T. and Achutti, A. (2002), Cardiovascular disease
and the global tobacco epidemic: a wake- up call for cardiologists. International
Journal of Cardiology, 86 (2-3), 185-192.
Abstract: The global tobacco epidemic continues unabated with the recruitment of young
people, including women, to join the ranks of smokers. Even though
cardiovascular diseases account for some of the major tobacco-related morbidity
and mortality, cardiologists and their professional societies have lagged behind in
the crusade against tobacco. A great opportunity exists for more involvement and
leadership role by cardiologists, especially in countries where tobacco control
efforts are not well established. For this to happen, there is a need to identify
barriers to cardiologists' involvement in tobacco prevention and cessation efforts
and to devise locally- relevant strategies to address them. Also, the areas where
the contribution of cardiologists can be most fruitful must be identified.
Considering that a substantial portion of the future burden of cardiovascular
disease will occur among current tobacco users, treating tobacco dependence and
supporting tobacco quitters are the most urgent tasks for cardiologists interested
in reducing the human toll of tobacco. The cardiovascular community must
consider the variety of needs and available resources to fight tobacco in different
regions. Recommendations to involve more cardiologists in tobacco control, at
the clinical, public health and policy levels, are presented. (C) 2002 Elsevier
Science Ireland Ltd. All rights reserved
Keywords: cardiologist(s)/cardiovascular/cardiovascular disease/cardiovascular
diseases/community/control/disease/diseases/epidemic/health/human/morbidity/
mortality/PHYSICIANS/POPULATION/prevention/prevention/treatment/public
health/recruitment/SMOKERS/smoking/SMOKING CESSATION
INTERVENTIONS/STROKE/tobacco/women
Gupta, A. and Thomas, P. (2002), Knowledge of stroke symptoms and risk factors
among at-risk elderly patients in the UK. International Journal of Clinical
Practice, 56 (9), 634-637.
Abstract: Assessing patient knowledge can help healthcare providers in planning
measures directed at prevention, early identification and referral of patients. An
incorrect understanding of stroke symptoms may delay patients seeking
emergency help, thus missing the benefits of acute stroke treatments. Insufficient
knowledge about stroke risk factors may affect risk factor control. We conducted
a questionnaire-based interview among elderly patients at risk of stroke and
assessed their baseline knowledge of stroke symptoms and risk factors. A large
proportion were found to have an improper understanding of stroke symptoms
and risk factors. Stress was considered the commonest risk factor for stroke.
Most patients did not consider themselves to be at further risk of stroke. Further
education is needed as part of stroke prevention strategies to remove
misconceptions. Improved recognition of stroke symptoms when they occur will
help when seeking emergency medical help
Keywords: acute/acute stroke/control/education/elderly/elderly
patients/ENGLAND/knowledge/medical/PERCEPTIONS/PREVENTION/risk/ri
sk factor/risk factors/SIGNS/stroke/stroke prevention/symptoms
Liao, J.K. (2003), Role of statin pleiotropism in acute coronary syndromes and stroke.
International Journal of Clinical Practice, 51-57.
Abstract: Several landmark clinical trials have demonstrated the benefit of
lipid-lowering with statins for the primary and secondary prevention of coronary
heart disease. The clinical data in support of lowering cholesterol by statins are
unequivocal. The established mechanism of action is via sterol regulatory
element binding protein (SREBP) activation due to reduced hepatic cholesterol
synthesis and secondary upregulation of the low-density lipoprotein
(LDL)-receptor, leading to enhanced clearance of circulating cholesterol and
lipids. Although it is widely accepted that most clinical benefit obtained with
statins is a direct result of their lipid-lowering properties, there is still some
debate as to whether the so-called pleiotropic effects' of statins contribute to the
clinical outcome in vascular disease, or whether all the beneficial effects of
statins are simply due to lipid-lowering. For example, these agents appear to
display additional cholesterol- independent effects on various aspects of
cardiovascular disease, including improving endothelial function, decreasing
vascular inflammation and enhancing plaque stability. Thus, further studies are
needed to understand the full impact of statin therapy on each of these processes
and whether these effects contribute to the clinical benefits of statins in acute
coronary syndromes and stroke
Keywords: activation/acute/acute coronary syndromes/ARTERY
DISEASE/benefits/C-REACTIVE PROTEIN/cardiovascular/cardiovascular
disease/cholesterol/clinical trials/coronary heart disease/disease/endothelial
function/ENDOTHELIAL PROGENITOR CELLS/ENGLAND/heart/heart
disease/HEART-DISEASE/HMG-COA REDUCTASE/inflammation/lipid
lowering/lipid-lowering/lipids/low density lipoprotein/mechanism of
action/MYOCARDIAL-INFARCTION/NITRIC-OXIDE
SYNTHASE/outcome/plaque/prevention/primary/primary and secondary
prevention/PRIMARY HYPERCHOLESTEROLEMIA/RHO-
GTPASE/secondary/secondary prevention/statin/statin
therapy/statins/stroke/therapy/trials/USA/vascular/vascular disease/VASCULAR
SMOOTH-MUSCLE
Vazquez, E., Sanchez-Perales, C., Garcia-Cortes, M.J., Borrego, F., Lozano, C., Guzman,
M., Gil, J.M., Liebana, A., Perez, P., Borrego, M.J. and Perez, V. (2003), Ought
dialysis patients with atrial fibrillation be treated with oral anticoagulants?
International Journal of Cardiology , 87 (2-3), 135-139.
Abstract: Background: Dialysis patients with atrial fibrillation have an increased
thrombolic risk. Dicoumarin anticoagulant therapy is often considered
contra-indicated in chronic renal insufficiency in which the risk of haemorrhage,
though not defined, is perceived to be high. We assessed haemorrhage
complications in dialysis patients receiving dicoumarin anticoagulant therapy to
establish whether the haemorrhage risk justifies the contra-indication of
anticoagulant therapy in patients with atrial fibrillation. Patients and methods:,
Over a period of a decade in our dialysis centre, 29 patients receiving
anticoagulant therapy over a protracted period presented haemorrhage
complications. These were classified with respect to severity and location and
compared with 211 patients not receiving anticoagulant therapy. The relative risk
of haemorrhage was calculated and was compared to risk of thrombo- embolism
in dialysis patients with atrial fibrillation. Results: Of the 29 patients, nine had 13
episodes of haemorrhage complications (26 episodes/100 patient-years). None
was fatal, nor intra-cranial nor with serious clinical sequelae. In the group
without anticoagulants, 29 patients had 39 haemorrhage complications (11
episodes/100 patient-years); four (10.2%) intra-cranial and all fatal. The relative
risk of bleeding with anticoagulant therapy was 2.36 (95% confidence
interval=1.19-4.27). Conclusions: (1) Dialysis patients with anticoagulant
therapy presented with a higher risk of haemorrhage; (2) the relative risk of
bleeding was double that of the dialysis population without anticoagulant therapy;
(3) despite the high risk of haemorrhage that we observed, the high risk of
thrombo-embolism and the attendant serious sequelae to which dialysis patients
with atrial fibrillation are predisposed indicates that oral anticoagulation therapy
ought not to be considered automatically contra-indicated in this patient group
but that an exhaustive evaluation of the risk- benefit needs to be conducted on an
individual patient basis. (C) 2002 Elsevier Science Ireland Ltd. All rights
reserved
Keywords: anticoagulant/anticoagulant
therapy/anticoagulants/anticoagulation/ANTITHROMBOTIC
THERAPY/atrial/atrial
fibrillation/bleeding/chronic/COMPLICATIONS/dialysis/embolism/evaluation/fi
brillation/haemorrhage/haemorrhage complications/HEMODIALYSIS/high
risk/intracranial/oral anticoagulants/oral
anticoagulation/population/PREVENTION/relative risk/renal/renal
insufficiency/risk/RISK-FACTORS/severity/Spain/STROKE/therapy/thromboe
mbolism/WARFARIN
Dimakakos, P.B., Antoniou, A., Mourikis, D. and Katsaros, G. (1998), Surgical outcome
of carotid artery disease: Analysis of 367 carotid endarterectomies. International
Surgery, 83 (4), 350-354.
Abstract: Carotid endarterectomy is a method of prophylaxis. A total of 367 carotid
endarterectomies in 335 patients were performed during the period of 1989-1997:
222 (66.3%) were symptomatic and 113 (33.7%) asymptomatic patients. In all,
262 (78.2%) had unilateral, 41 (12.2%) contralateral occlusion and 32 (9.6%)
bilateral artery disease, All were operated on under general anesthesia without
using shunt or patch. Of the patients with bilateral occlusive disease, 17
underwent simultaneous and 15 staged endarterectomy; The mortality rate of the
first 30 postoperative days was 1.19% and the mortality/stroke rate 2.38%.
Transient neurogenic dysfunction occurred in 3.68%, myocardial ischemia in
0.89%, and postoperative hypertension in 16.7%. Endarterectomy of
symptomatic and asymptomatic patients with unilateral localisation, contralateral
occlusion or bilateral occlusive disease remains a highly acceptable prophylactic
method. The future will show whether other endovascular procedures affect the
broad application of carotid endarterectomy
Keywords:
AD-HOC-COMMITTEE/AMERICAN-HEART-ASSOCIATION/ANESTHESI
A/asymptomatic/CARDIAC EVENTS/carotid/carotid artery/carotid
endarterectomy/CEREBRAL-ISCHEMIA/complications following carotid
endarterectomy/endarterectomy/HYPERTENSION/ischemia/mortality/myocardi
al/MYOCARDIAL-
ISCHEMIA/OPERATIONS/PREVENTION/prophylaxis/results after carotid
endarterectomy/shunt/VASCULAR-SURGERY
Diener, H.C. and Weiller, C. (1993), Ticlopidine - Secondary Prevention of Ischemic
Myocardial- Infarction. Internist, 34 (12), 1150-1155
Keywords: ASPIRIN/NEW-YORK/STROKE
Diener, H.C. (1995), Risk-Factors and Prevention of Cerebral Arterial Vascular- Disease.
Internist, 36 (9), 868-874
Keywords:
ANTICOAGULATION/ASPIRIN/ATRIAL-FIBRILLATION/BLOOD-PRESS
URE/CORONARY HEART-DISEASE/RANDOMIZED
TRIAL/STROKE/TICLOPIDINE/WARFARIN
Windler, E. (2000), Another assessment of the CARE Study - Incidence of insult in
post-infarction patients during pravastatin therapy. Internist, 41 (10), 1120-1123
Keywords: AVERAGE CHOLESTEROL LEVELS/CARE/CORONARY
EVENTS/MEN/METAANALYSIS/MORTALITY/NEW-YORK/pravastatin/PR
EVENTION/REDUCTASE
INHIBITORS/RISK-FACTORS/STROKE/therapy/TRIALS
Nelles, G. and Diener, H.C. (2002), Prevention and rehabilitation of stroke in the elderly.
Internist, 43 (8), 941-948
Keywords: ASPIRIN/COPENHAGEN
STROKE/DOUBLE-BLIND/elderly/ELECTRICAL-STIMULATION/Germany/
METAANALYSIS/MOTOR
RECOVERY/NEW-YORK/PLASTICITY/rehabilitation/stroke/THERAPY/TRI
ALS/WRIST
Diener, H.C., Philipp, T. and Schrader, J. (2003), Hypertension and stroke. Internist, 44
(7), 786-+.
Abstract: Hypertension is the most important risk factor for stroke and vascular
dementia. Antihypertensive treatment reduces stroke risk by 40%. Most probably
all antihypertensive drugs are equally effective with the exception of
alpha-blockers. Blood pressure is increased in many patients with acute stroke. In
this phase sudden drops in blood pressure should be avoided. The combination of
an ACE-inhibitor and a diuretic reduced strokes by 28% after TIA or a first
stroke. Whether this is a drug specific effect or due to lowering blood pressure
per se is investigated at the moment
Keywords: ACE inhibitor/acute/acute stroke/ANTIHYPERTENSIVE DRUGS/blood
pressure/BLOOD- PRESSURE/CALCIUM-CHANNEL
BLOCKER/CARDIOVASCULAR
MORBIDITY/combination/dementia/drug/drugs/Germany/hypertension/ISOLA
TED SYSTOLIC HYPERTENSION/LIPID-LOWERING
TREATMENT/MORTALITY/NEW-YORK/OLDER PATIENTS/primary
prevention/RANDOMIZED-TRIAL/risk/risk factor/secondary
prevention/stroke/sudden/TIA/TRANSIENT ISCHEMIC
ATTACK/treatment/USA/vascular/vascular dementia
Faust, M. and Krone, W. (2003), End-organ damage in hyperlipidemias. Internist, 44 (7),
831-+.
Abstract: Epidemiological and experimental data have clearly demonstrated a strong
association between elevated LDL-cholesterol levels and coronary heart disease.
In concordance lipid-lowering trials with statins have shown a significant
reduction of cardiovascular events. Although stroke is mainly caused by
atherosclerotic vascular events, epidemiolgical data have so far failed to show a
significant relationship between elevated lipid levels and stroke incidence.
However, recent lipid intervention trials with statins have clearly demonstrated a
significant reduction in stroke incidence. Moreover, elevated cholesterol levels
are thought to contribute to progression of chronic renal insufficiency. In
addition, cholesterol crystal emboli are a rare but frequently serious complication
of vascular catheter interventions. Significant hypertriglyceridemia carries a
significant risk of acute pancreatitis and is thought to contribute to the
development of fatty liver disease
Keywords: acute/atherosclerosis/AVERAGE CHOLESTEROL
LEVELS/BLOOD-PRESSURE/cardiovascular/CARDIOVASCULAR
EVENTS/cholesterol/chronic/complication/coronary heart
disease/CORONARY-HEART-DISEASE/development/disease/emboli/experime
ntal/Germany/heart/heart
disease/hypercholesterolemia/hypertriglyceridemia/incidence/LDL
cholesterol/LDL-cholesterol/lipid
lowering/lipid-lowering/MEN/NEW-YORK/NONALCOHOLIC
STEATOHEPATITIS/PREVENTION/progression/renal/renal
insufficiency/risk/RISK-FACTORS/statins/STROKE/stroke/stroke
incidence/trials/TYPE-2 DIABETES-MELLITUS/USA/vascular/vascular events
Nistri, M., Mangiafico, S., Cellerini, M., Villa, G., Mennonna, P., Ammannati, E. and
Giordano, G.P. (2002), Percutaneous transluminal cerebral angioplasty and
stenting in acute vertebrobasilar ischemic stroke - Report of two cases.
Interventional Neuroradiology, 8 (2), 135-141.
Abstract: Reports of cerebral transluminal angioplasty and stenting in patients with
vertebrobasilar ischemic stroke are scanty. Herein we report on the use of
"monorail" coronary balloon angioplasty and stent balloon mounted catheters in
two patients with acute vertebrobasilar ischemic stroke, focussing on the
differences and possible advantages of the "monorail" technique in comparison
with the "over-the-wire" technique. In both patients, the clinical picture was
characterized by progressive brainstem symptoms followed by acute loss of
consciousness related to an atherothrombotic occlusion and subocclusion of the
dominant intracranial vertebral artery, respectively. In one patient, superselective
thrombolytic therapy and balloon angioplasty resulted in a dissection flap at the
vertebrobasilar junction. The latter was treated by successful deployment of a
coronary stent. In the other patient, the subocclusive lesion was directly treated
by angioplasty and stenting without thrombolytic therapy. The clinical outcome
was poor for one patient ("locked in" syndrome) while the other had a complete
clinical recovery. In acute atherothrombotic vertebrobasilar stroke transluminal
cerebral angioplasty and stenting may be successfully performed allowing vessel
recanalization
Keywords: acute/angioplasty/BALLOON ANGIOPLASTY/basilar artery/BASILAR
ARTERY-STENOSIS/cerebral/coronary stent/dissection/ENDOVASCULAR
PROCEDURES/EXPERIENCE/ischemic/ischemic
stroke/OCCLUSION/outcome/PREVENTION/recanalization/stent/stent
placement/stenting/stroke/symptoms/TECHNICAL
CASE-REPORT/therapy/thrombolytic/thrombolytic therapy/use/vertebral artery
Zhongrong, M., Feng, L., Shengmao, L., Fengshui, Z., Hongqi, Z., Moli, W. and Yang,
H. (2003), Natural history and treatment modalities of symptomatic bilateral
middle cerebral artery stenosis. Interventional Neuroradiology, 9 (1), 31-38.
Abstract: To assess the natural history, pathogenesis, and treatment modalities of
symptomatic bilateral middle cerebral artery stenosis, we retrospectively
evaluated a consecutive series of patients for their medical history, anamnesis,
and our treatment protocol. Treatment included transluminal angioplasty, bypass
surgery and/or conservative antiplatelet therapy for prevention of the stroke
attack and vessel reconstruction. Indications, feasibility, effectiveness, and
complications of treatment are also discussed. A series of 19 patients with
symptomatic bilateral middle cerebral artery (MCA) stenosis were treated
consecutively from 1998 to 2002. Medical history, anamnesis, and treatment
protocol were reviewed and evaluated retrospectively, Of these 19 patients, six
(six vessels, 31.57%) were treated by balloon (two vessels) or stent-assistant
angioplasty (four vessels), four (four vessels, 21.05%) were treated by bypass
surgery, 18 vessels plus ten vessels occluded before treatment (47.37%) were
conservatively treated by antiplatelet agents. 24 vessels (12 patients) were
followed from three months to four years by angiography (nine cases), TCD (12
cases), or MRA (five cases). A total of 38 vessels were involved (19 vessels), of
which ten vessels (10/38, 26.31%) had occluded before coming to our hospital.
Three patients (3/19, 15.78%) had a history of hypertension, five had a history of
smoking. The mean age of these 19 patients was 33 yrs (24 similar to 42 yrs),
with a slight male preponderance (males/females = 13/6). Initial clinical
presentations were TIAs (14/19, 73.68%) and minor stroke (5/19, 26.32%),
symptoms attacked alternatively for five patients (5/38, 13.16%). Seven vessels
(7/28, 25%) occluded within one to three years, of which three occluded
asymptomatically, four acutely occluded vessels accompanied acute stroke. Nine
vessels (9/28, 32.14%) were treated by conservative antiplatelet agents and one
treated by bypass surgery had related recurrent TIAs. Vessels treated by
angioplasty (balloon or stent) remained patent and free of symptoms. The
stenosed bilateral MCA may occlude within one to three years without
intervention. The pathogenesis of this special disease is unclear; it may be
genetic or due to asymptomatic infection. The results showed that earlier
appropriate treatment can resolve the clinical symptoms and somehow change
the natural history of this disease. Conservative medical therapy cannot prevent
further stroke attack. Collaterals are very important for these special patients
Keywords: acute/acute stroke/age/angiography/angioplasty/antiplatelet/antiplatelet
agents/antiplatelet therapy/asymptomatic/balloon/bypass/bypass
surgery/cerebral/cerebral
artery/China/complications/disease/genetic/history/hospital/hypertension/infectio
n/ISCHEMIC STROKE/medical/medical history/middle cerebral artery/middle
cerebral artery stenosis/MRA/natural history/OCCLUSIVE
CEREBROVASCULAR-DISEASE/patent/pathogenesis/PERCUTANEOUS
TRANSLUMINAL
ANGIOPLASTY/prevention/results/smoking/stenosis/stent/stroke/surgery/sympt
oms/TCD/therapy/treatment/vessels
Shelley, E., Daly, L., Graham, I., Beirne, A., Conroy, R., Gibney, M., Hickey, N.,
Kilcoyne, D., Lee, B., Odwyer, T., Radic, A. and Mulcahy, R. (1991), The
Kilkenny Health Project - A Community Research and Demonstration
Cardiovascular Health-Program. Irish Journal of Medical Science , 160 10-16.
Abstract: Ireland has one of the highest death rates in the world from coronary heart
disease (CHD) and has not shared in the rapid decline in mortality which has
occurred in other countries. The Kilkenny Health Project was established as a
community- based research and demonstration programme for cardiovascular
disease prevention in County Kilkenny and as a pilot project for future national
initiatives. The first phase of the health promotion programme in Kilkenny is
being carried out between 1985 and 1990. Changes in behaviour and in factors
associated with CHD will be estimated by the difference in changes over time
between Kilkenny and the reference area, as measured by independent random
sample surveys of men and women aged 35 to 64 years. CHD and stroke events,
fatal and non-fatal, will be registered in both areas from 1987-1992. The Project
has studied attitudes to CHD and its prevention. Health behaviours have been
studied in adults and in post-primary school pupils. Risk factors for CHD have
been measured in adults in accordance with the methods of the international
MONICA Project. It has been demonstrated that health and education
professionals can incorporate preventive activities and health education into
everyday practice
McDonnell, R., Fan, C.W., Johnson, Z. and Crowe, M. (2000), Prevalence of risk factors
for ischaemic stroke and their treatment among a cohort of stroke patients in
Dublin. Irish Journal of Medical Science, 169 (4), 253-257.
Abstract: Background The majority of strokes are due to ischaemia. Risk factors include
atrial fibrillation, hypertension and smoking. The incidence can be reduced by
addressing these risk factors. This study examines the prevalence of risk factors
and their treatment in a cohort of patients with ischaemic stroke registered on a
Dublin stroke database. Methods Patients admitted to any of three acute hospitals
with a diagnosis of stroke during a one-year period in 1997/98 were registered on
a database using the European Stroke Database format. Data relating to common
risk factors were analysed. Results There were 238 ischaemic stroke cases
registered. The most frequent medical risk factors were: hypertension (45%),
atrial fibrillation (27.3%), and previous disabling or non-disabling stroke
(33.2%). There was an increasing trend with advancing age for atrial fibrillation
(p 50%) ipsilateral internal carotid artery stenosis.
Design. - Prospective, randomized, multicenter trial. Setting. - Sixteen
university-affiliated Veterans Affairs medical centers. Patients. - Men who
presented within 120 days of onset of symptoms that were consistent with
transient ischemic attacks, transient monocular blindness, or recent small
completed strokes between July 1988 and February 1991. Among 5000 patients
screened, 189 individuals were randomized with angiographic internal carotid
artery stenosis greater than 50% ipsilateral to the presenting symptoms.
Forty-eight eligible patients who refused entry were followed up outside of the
trial. Outcome Measures. - Cerebral infarction or crescendo transient ischemic
attacks in the vascular distribution of the original symptoms or death within 30
days of randomization. Intervention. - Carotid endarterectomy plus the best
medical care (n = 91) vs the best medical care alone (n = 98). Results. - At a
mean follow-up of 11.9 months, there was a significant reduction in stroke or
crescendo transient ischemic attacks in patients who received carotid
endarterectomy (7.7%) compared with nonsurgical patients (19.4%), or an
absolute risk reduction of 11.70% (P = .011). The benefit of surgery was more
profound in patients with internal carotid artery stenosis greater than 70%
(absolute risk reduction, 17.7%; P =.004). The benefit of surgery was apparent
within 2 months after randomization, and only one stroke was noted in the
surgical group beyond the 30-day perioperative period. Conclusions. - For a
selected cohort of men with symptoms of cerebral or retinal ischemia in the
distribution of a high-grade internal carotid artery stenosis, carotid
endarterectomy can effectively reduce the risk of subsequent ipsilateral cerebral
ischemia. The risk of cerebral ischemia in this subgroup of patients is
considerably higher than previously estimated
Keywords: ASPIRIN/ATTACKS/CONTROLLED
TRIAL/DISEASE/EXTRACRANIAL
ARTERIES/HEAD/PERFORMANCE/RISK/STROKE
Probstfield, J.L. (1991), Prevention of Stroke by Antihypertensive Drug-Treatment in
Older Persons with Isolated Systolic Hypertension - Final Results of the Systolic
Hypertension in the Elderly Program (Shep). Jama-Journal of the American
Medical Association, 265 (24), 3255-3264.
Abstract: Objective. - To assess the ability of antihypertensive drug treatment to reduce
the risk of nonfatal and fatal (total) stroke in isolated systolic hypertension.
Design. - Multicenter, randomized, double-blind, placebo-controlled. . Setting. -
Community-based ambulatory population in tertiary care centers. Participants. -
4736 persons (1.06%) from 447 921 screenees aged 60 years and above were
randomized (2365 to active treatment, 2371 to placebo). Systolic blood pressure
ranged from 160 to 219 mm Hg and diastolic blood pressure was less than 90
mm Hg. Of the participants, 3161 were not receiving antihypertensive
medication at initial contact, and 1575 were. The average systolic blood pressure
was 170 mm Hg; average diastolic blood pressure, 77 mm Hg. The mean age
was 72 years, 57% were women, and 14% were black. Interventions. -
Participants were stratified by clinical center and by antihypertensive medication
status at initial contact. For step 1 of the trial, dose 1 was chlorthalidone, 12.5
mg/d, or matching placebo; dose 2 was 25 mg/d. For step 2, dose 1 was atenolol,
25 mg/d, or matching placebo; dose 2 was 50 mg/d. Main Outcome Measures. -
Primary. - Nonfatal and fatal (total) stroke. Secondary. - Cardiovascular and
coronary morbidity and mortality, all-cause mortality, and quality of life
measures. Results. - Average follow-up was 4.5 years. The 5-year average
systolic blood pressure was 155 mm Hg for the placebo group and 143 mm Hg
for the active treatment group, and the 5-year average diastolic blood pressure
was 72 and 68 mm Hg, respectively. The 5-year incidence of total stroke was 5.2
per 100 participants for active treatment and 8.2 per 100 for placebo. The relative
risk by proportional hazards regression analysis was 0.64 (P = .0003). For the
secondary end point of clinical nonfatal myocardial infarction plus coronary
death, the relative risk was 0.73. Major cardiovascular events were reduced
(relative risk, 0.68). For deaths from all causes, the relative risk was 0.87.
Conclusion. - In persons aged 60 years and over with isolated systolic
hypertension, antihypertensive stepped-care drug treatment with low-dose
chlorthalidone as step 1 medication reduced the incidence of total stroke by 36%,
with 5-year absolute benefit of 30 events per 1 000 participants. Major
cardiovascular events were reduced, with 5- year absolute benefit of 55 events
per 1000
Keywords: CARE/MORTALITY/OSLO/POPULATION/RISK/TRIAL/TRIALS
Strandberg, T.E., Salomaa, V.V., Naukkarinen, V.A., Vanhanen, H.T., Sarna, S.J. and
Miettinen, T.A. (1991), Long-Term Mortality After 5-Year Multifactorial
Primary Prevention of Cardiovascular-Diseases in Middle-Aged Men.
Jama-Journal of the American Medical Association, 266 (9), 1225-1229.
Abstract: Objective. - To investigate the long-term effects of multifactorial primary
prevention of cardiovascular diseases (CVD). Design. - The 5-year randomized,
controlled trial was performed between 1974 and 1980. The subjects and their
risk factors were reevaluated in 1985. Posttrial mortality follow-up was
continued up to December 31, 1989. Setting. - Institute of Occupational Health,
Helsinki, Finland, and Second Department of Medicine, University of Helsinki.
Participants. - In all, 3490 business executives born during 1919 through 1934
participated in health checkups in the late 1960s. In 1974, 1222 of these men
who were clinically healthy, but with CVD risk factors, were entered into the
primary prevention trial; 612 were randomized to an intervention and 610 to a
control group. Interventions. - During the 5-year trial, the subjects of the
intervention group visited the investigators every fourth month. They were
treated with intensive dietetic- hygienic measures and frequently with
hypolipidemic (mainly clofibrate and/or probucol) and antihypertensive (mainly
beta- blockers and/or diuretics) drugs. The control group was not treated by the
investigators. Main Outcome Measures. - Total mortality, cardiac mortality,
mortality due to other causes. Results. - Total coronary heart disease risk was
reduced by 46% in the intervention group as compared with the control group at
end-trial. During 5 posttrial years, the risk factor and medication differences
were largely leveled off between the groups. Between 1974 and 1989 the total
number of deaths was 67 in the intervention group and 46 in the control group
(relative risk [RR], 1.45; 95% confidence interval [Cl], 1.01 to 2.08; P=.048);
there were 34 and 14 cardiac deaths (RR. 2.42; 95% Cl. 1.31 to 4.46. P =.001).
two and four deaths due to other CVD (not significant), 13 and 21 deaths due to
cancer (RR, 0.62; 95% Cl, 0.31 to 1.22; P = .15), and 13 and one deaths due to
violence (RR, 13.0;95% Cl, 1.70 to 98.7; P = .002), respectively. Multiple
logistic regression analysis of treatments in the intervention group did not
explain the 15- year excess cardiac mortality. Conclusion. - These unexpected
results may not question multifactorial prevention as such but do support the
need for research on the selection and interaction(s) of methods used in the
primary prevention of cardiovascular diseases
Keywords: BLOOD-PRESSURE/CHOLESTEROL/CORONARY
HEART-DISEASE/METABOLISM/OSLO/PROJECT/STROKE/THERAPY/T
RIAL
Manson, J.E., Stampfer, M.J., Colditz, G.A., Willett, W.C., Rosner, B., Speizer, F.E. and
Hennekens, C.H. (1991), A Prospective-Study of Aspirin Use and Primary
Prevention of Cardiovascular-Disease in Women. Jama-Journal of the American
Medical Association, 266 (4), 521-527.
Abstract: Objective.-The aim of the study was to examine prospectively the association
between regular aspirin use and the risk of a first myocardial infarction and other
cardiovascular events in women. Design. - Prospective cohort study including 6
years of follow-up. Setting. -Registered nurses residing in 11 US states.
Participants. - US registered nurses (n = 87 678) aged 34 to 65 years and free of
diagnosed coronary heart disease, stroke, and cancer at baseline. Follow-up was
96.7% of total potential person-years of follow-up. Main Outcome Measures.-
Incidence of myocardial infarction, stroke, cardiovascular death, and all
important vascular events. Results. - During 475 265 person-years of follow-up,
we documented 240 nonfatal myocardial infarctions, 146 nonfatal strokes, and
130 deaths due to cardiovascular disease (total, 516 important vascular events).
Among women who reported taking one through six aspirin per week, the
age-adjusted relative risk (RR) of a first myocardial infarction was 0.68 (95%
confidence interval [Cl], 0.52 to 0.89; P = .005), as compared with those women
who took no aspirin. After simultaneous adjustment for risk factors for coronary
disease, the RR was 0.75 (95% Cl, 0.58 to 0.99; P = .04). For women aged 50
years and older, the age-adjusted RR was 0.61 (95% Cl, 0.45 to 0.84; P = .002)
and the multivariate RR was 0.68 (95% Cl, 0.50 to 0.93; P = .02). We observed
no alteration in the risk of stroke (multivariate RR = 0.99; P = .94). The
multivariate RR of cardiovascular death was 0.89 (P = .56) and of important
vascular events was 0.85 (P = .12). When examined separately, the results were
nearly identical for the subgroups who took one through three and four though
six aspirin per week. Among women who took seven or more aspirin per week,
there were no apparent reductions in risk. Conclusions.-The use of one through
six aspirin per week appears to be associated with a reduced risk of a first
myocardial infarction among women. A randomized trial in women is necessary,
however, to provide conclusive data on the role of aspirin in the primary
prevention of cardiovascular disease in women
Keywords: ACETYLSALICYLIC-ACID/BLEEDING-TIME/CORONARY
HEART-DISEASE/HEALTHY- SUBJECTS/INHIBITION/LOW-DOSE
ASPIRIN/METABOLITES/PHYSICAL-ACTIVITY/PROSTACYCLIN
PRODUCTION/SEX
Mcgovern, P.G., Burke, G.L., Sprafka, J.M., Xue, S.L., Folsom, A.R. and Blackburn, H.
(1992), Trends in Mortality, Morbidity, and Risk Factor Levels for Stroke from
1960 Through 1990 - the Minnesota Heart Survey. Jama-Journal of the
American Medical Association, 268 (6), 753-759.
Abstract: Objective.-The Minnesota Heart Survey is a population-based study designed
to monitor and explain trends in cardiovascular mortality, morbidity, and risk
factors. Design.-Surveillance time-trends study. Methods.-The following trends
were examined among men and women aged 25 to 74 years living in
Minneapolis- St Paul, Minn: (1) stroke mortality from 1960 through 1990; (2)
risk factors in population-based surveys conducted in 1973 through 1974, 1980
through 1982, and 1985 through 1987; and (3) morbidity in a 50% sample of
hospitalized discharges for acute- stroke in 1970, 1980, and 1985.
Results.-Stroke mortality in Minneapolis-St Paul declined slowly from 1960
through 1972 (average fall, 2.4% per year), dropped sharply from 1972 through
1984 (average fall, 6.5% per year), but exhibited little change thereafter (average
fall, 1.5% per year). The average level of cardiovascular disease risk factors fell
from 1973-1974 to 1985-1987, with the exception of body mass index. In
particular, hypertension diagnosis, treatment, and control levels improved
substantially between 1973-1974 and 1980-1982, although there was little
improvement after 1980-1982. While discharge rates for hospital-coded acute
stroke declined substantially between 1970 and 1985 in both sexes, no clear trend
was observed in definite stroke rates as validated using standard clinical criteria.
Twenty-eight-day case fatality rates of definite stroke improved significantly
from 1970 to 1985. Conclusions.-The substantial decline in stroke mortality of
more than 50% from 1960 through 1990 appears to have been attributable to both
primary and secondary prevention. These data suggest that the long decline in
stroke mortality and morbidity in Minneapolis-St Paul has plateaued, although
improved detection of stroke with computed tomography prevents an
unequivocal conclusion
Keywords: CEREBROVASCULAR-DISEASE/DECLINE/POPULATION/SURVEY
EXPERIENCE/SURVIVAL
Benjamin, E.J., Levy, D., Vaziri, S.M., Dagostino, R.B., Belanger, A.J. and Wolf, P.A.
(1994), Independent Risk-Factors for Atrial-Fibrillation in A Population-Based
Cohort - the Framingham Heart-Study. Jama-Journal of the American Medical
Association, 271 (11), 840-844.
Abstract: Objective.-To determine the independent risk factors for atrial fibrillation.
Design.-Cohort study. Setting.-The Framingham Heart Study. Subjects.-A total
of 2090 men and 2641 women members of the original cohort, free of a history
of atrial fibrilltation, between the ages of 55 and 94 years. Main Outcome
Measures.-Sex-specific multiple logistic regression models to identify
independent risk factors for atrial fibrillation, including age, smoking, diabetes,
electrocardiographic left ventricular hypertrophy, hypertension, myocardial
infarction, congestive heart failure, and valve disease. Results.-During up to 38
years of follow-up, 264 men and 298 women developed atrial fibrillation, After
adjusting for age and other risk factors for atrial fibrillation, men had a 1.5 times
greater risk of developing atrial fibrillation than women. In the full multivariable
model, the odds ratio (OR) of atrial fibrillation for each decade of advancing age
was 2.1 for men and 2.2 for women (P1.62 mg/mmol) (P for trend 50% according to duplex
scanning developed in 13%, most (67%) within 2 years after CEA. Most of these
(77%) were asymptomatic, and only 0.3% (1 patient) presented with a permanent
neurologic deficit. The results of carotid endarterectomy are superior to those of
optimal medical management in symptomatic and asymptomatic patients in
terms of long-term stroke prevention. When low perioperative stroke
mortality/morbidity rates are achieved, carotid endarterectomy is justified for
treatment of patients with carotid bifurcation disease
Keywords: CAROTID ENDARTERECTOMY/CVA/STROKE
Strandgaard, S. and Paulson, O.B. (1992), Regulation of Cerebral Blood-Flow in Health
and Disease. Journal of Cardiovascular Pharmacology, 19 S89-S93.
Abstract: A review is given of the normal regulation of cerebral blood flow (CBF) and
its pathophysiology in hypertension and stroke. In otherwise healthy
hypertensive patients, the absolute level of CBF is the same as in normal subjects.
CBF autoregulation, however, is shifted towards higher pressure, thus impairing
the tolerance to hypotension. In most patients, this does not interfere with the
beneficial effect of treatment, i.e., stroke prevention. Cerebral ischemia, however,
may be provoked by over-zealous pressure lowering in selected clinical settings:
initial or intensified treatment of very severe hypertension, treatment of
hypertension in the elderly, and treatment of hypertension in acute stroke. In the
latter, a complicated sequence of brain ischemia and hyperemia makes
antihypertensive intervention difficult in the early phase, when blood pressure is
probably best allowed to decrease spontaneously
Keywords: ACUTE ISCHEMIC STROKES/ANTIHYPERTENSIVE
TREATMENT/AUTO- REGULATION/AUTOREGULATION/CEREBRAL
BLOOD FLOW/CONVERTING
ENZYME-INHIBITION/DIHYDRALAZINE/HYPERTENSION/HYPERTENS
IVE RATS/INDUCED HYPOTENSION/INFARCTION/STROKE/UPPER
LIMIT
Cruickshank, J.M. (1992), Beta-Blockers - Primary and Secondary Prevention. Journal
of Cardiovascular Pharmacology, 20 S55-S69.
Abstract: Coronary heart disease is the most frequent cause of death in Western,
industralized countries. Coronary risk factors are prevalent in such countries and
sometimes combine to constitute the so-called syndrome X-hypertension, central
obesity, serum lipid and clotting disturbances, and insulin resistance. Beta-
blockers, unlike calcium antagonists, have proved highly effective in secondary
prevention of myocardial infarction. If present at the time of the myocardial
infarction, beta-blockers (unlike calcium antagonists and diuretics) probably
decrease mortality 1 month later. Early intervention (within 12 h) of chest pain
with intravenous beta-blockers results in a 15% reduction in cardiovascular
mortality at 1 week. Later intervention (3-28 days) with oral non-ISA
beta-blockers results in a 30% reduction in mortality after 1 year; ISA-
containing beta-blockers are probably less effective (less decrease in heart rate).
Hydrophilicity/lipophilicity of beta- blockers is unimportant in terms of
decreased mortality. Primary prevention of myocardial infarction, unlike stroke,
in hypertensive patients has been disappointing, possibly due to
treatment-induced biochemical/lipid changes or inappropriate lowering of
diastolic blood pressure in high-risk subjects (J- curve effect). Beta-blockers
should be first-line therapy for hypertensive patients up to the age of 65 years,
particularly men (and nonsmokers) as Q-wave myocardial infarction is
significantly decreased by beta-blockers and significantly increased by diuretics.
However, in elderly hypertensive subjects, beta-blockers have not significantly
decreased myocardial infarction (unlike stroke), whereas diuretics have. The
effects of beta-blockers and diuretics on heart size (and thus coronary flow
reserve) in the elderly may be important. Thus, beta-blockers should be
second-line therapy for the elderly hypertensive individual but first-line if overt
ischemia (e.g., angina or recent myocardial infarction) also is present. In patients
with angina but normal blood pressure, beta-blockers tend to decrease and
calcium antagonists increase cardiovascular events. Thus, beta-blockers are
highly effective agents in the secondary prevention of myocardial infarction and
are moderately effective in primary prevention of myocardial infarction in
hypertensive patients (particularly men) under the age of 65 years
Keywords: ACUTE
MYOCARDIAL-INFARCTION/BETA-BLOCKERS/CORONARY
HEART-DISEASE/DRUG TRIALS/EARLY INTERVENTION/HEART/HIGH
BLOOD-PRESSURE/HYPERTENSIVE PATIENTS/INTRAVENOUS
ATENOLOL/LATE INTERVENTION/METOPROLOL
TRIAL/MORBIDITY/MORTALITY/PRIMARY PREVENTION/Q-WAVE
INFARCTION/SECONDARY PREVENTION/SUDDEN DEATH/UNSTABLE
ANGINA
Fuller, J.H. (1993), Hypertension and Diabetes - Epidemiologic Aspects As A Guide to
Management. Journal of Cardiovascular Pharmacology, 21 S63-S66.
Abstract: Elevated blood pressure (BP) is an important risk factor for both the large- and
small-vessel complications of diabetes. The following pathogenetic mechanisms
have been proposed to explain the association between hypertension and diabetes:
increases in total body exchangeable sodium associated with hyperglycemia,
alterations in the function of the renin-angiotensin- aldosterone system, and the
possible role of insulin resistance. Several prospective studies have shown that
both systolic and diastolic BP are important predictors of ischemic heart disease,
stroke, and renal disease mortality in diabetic patients. In spite of this strong
association, there is little evidence from randomized controlled trials on the
efficacy of BP lowering in the prevention of cardiovascular mortality in diabetic
patients. Prospective data from the WHO Multinational Study do not provide
clear evidence of benefit from treating diastolic BP 65 years of age and have other clinical or echocardiographic risk factors. In
these patients, adjusted-dose warfarin with target international normalized ratios
(INRs) 2.0 to 3.0 is effective and safe. The risk of stroke rises with INR values
3.0 result in an increase in intracerebral hemorrhages,
especially in the very elderly. In contrast, no anticoagulation seems warranted in
younger atrial fibrillation patients 7.4%) which compares
favourably with an estimated upper limit of 5.5% based on recent trial reports.
The present study highlights the difficulty in modelling local clinical practice on
results of major trials when standards of patient evaluation and surgical skill may
differ from those of the large studies. To justify generalization of indications for
intervention based on the multicentre trials, there must be continual monitoring
of local surgical results, and standardized use of diagnostic investigations
Keywords: 1001 ANGIOGRAMS/audit/carotid/carotid endarterectomy/carotid
stenosis/cerebral
infarction/endarterectomy/evaluation/morbidity/mortality/STENOSIS/STROKE/
stroke prevention/SURGERY/trials/ULTRASONOGRAPHY/vascular
Singer, S.T., Quirolo, K., Nishi, K., Hackney-Stephens, E., Evans, C. and Vichinsky,
E.P. (1999), Erythrocytapheresis for chronically transfused children with sickle
cell disease: An effective method for maintaining a low hemoglobin S level and
reducing iron overload. Journal of Clinical Apheresis, 14 (3), 122-125.
Abstract: Cerebrovascular accident (CVA) is a major complication of sickle cell disease
during childhood. Long-term transfusion reduces the hemoglobin S level and
generally prevents recurrent stroke, but it also results in progressive iron
overload that requires regular chelation therapy. Erythrocytapheresis offers an
alternative approach aimed at reducing the iron accumulation. We reviewed the
results of erythrocytapheresis in eight sickle cell patients (mean age of 12.1 years)
at high risk for a first or recurrent stroke. They were maintained at the standard
pre-transfusion hemoglobin S (Hb S) level of 30%. Over an average of 9 months
of erythrocytapheresis, none of the patients developed complications related to
the procedure or to the increased blood use. Ferritin levels decreased by a mean
of 26.5% in all patients. When evaluating the ferritin level in five patients, who
remained on chelation therapy with deferoxamine (DFO), the level dropped by a
mean of 32%. The levels remained stable in the three patients who were not on
DFO. The procedure is safe and effective in reducing iron overload and can
obviate the need for chelation therapy, even when the target Hb S is maintained
at the standard 30% range. (C) 1999 Wiley-Liss,Inc
Keywords:
age/ANEMIA/APHERESIS/CHELATION-THERAPY/complications/CVA/eryt
hrocytapheresis/hemoglobin/iron
overload/NEW-YORK/PREVENTION/recurrent stroke/risk/STROKE/stroke in
sickle cell disease/therapy/transfusion
Fried, L.P., Bandeen-Roche, K., Kaser, J.D. and Guralnik, J.M. (1999), Association of
comorbidity with disability in older women: The Women's Health and Aging
Study. Journal of Clinical Epidemiology, 52 (1), 27-37.
Abstract: There is substantial evidence that physical disability results from chronic
diseases and that the number of chronic diseases is associated with the presence
and severity of disability. There is some evidence that interactions between
specific diseases are of import in causing disability. Beyond arthritis, however,
little is known of the disease pairs that may be important to focus on in future
research. This study explores the associations between multiple disease pairs and
different types of physical disability, with the objective of
hypothesis;development regarding the importance of disease interactions. The
study population comprised a representative sample of 3841 women 65 years and
older living in Baltimore, screened for participation in the Women's Health and
Aging Study. The study design was cross-sectional. An interviewer-
administered screening questionnaire was administered regarding self-reported
physical disability in 15 tasks of daily life, history of physician diagnosis of 14
chronic diseases, and MiniMental State examination. Task difficulty was
empirically grouped into six subsets of minimally overlapping disabilities, with a
comparison group consisting of those with no difficulty in any task subset.
Multiple logistic regression models were fit assessing the relationship of major
chronic diseases and of interactions of disease pairs with each disability subtype
and with any disability, adjusting for confounders. Fourteen percent of the
population reported mobility difficulty only; 5%, upper extremity difficulty only;
9%, both of these difficulties but no others; 7%, difficulty in higher function but
not self-care tasks; 7%, self-care task difficulty but not higher function tasks; and
15%, difficulty in both higher function and self-care (weighted data). Almost all
in the latter three groups had difficulty, as well, in mobility or upper extremity
tasks. In regression models, specific disease pairs were synergistically associated
with different types of disability. For example, important disease pairs that
recurred in their associations with different disability types were the presence of
arthritis and visual impairments, arthritis and high blood pressure, heart disease
and cancer, lung disease and cancer, and stroke and high blood pressure. In
addition, the type of disability that a disease was associated with varied,
depending on the other disease that was present. Finally, when interactions were
accounted for, many diseases were no longer, in themselves, independently
associated with a given type of disability. Partitioning disability into six subtypes
was more informative in terms of associations than was evaluating a summary
category of "any disability." These findings provide a basis for further hypothesis
development and testing of synergistic relationships of specific diseases with
disabilities. If testing confirms these observations, these findings could provide a
basis for new strategies for prevention of disability by minimizing comorbid
interactions. J CLIN EPIDEMIOL 52;1:27-37, 1999. (C) 1999 Elsevier Science
Inc
Keywords: ADULTS/aging/ARTHRITIS/blood pressure/chronic
disease/comorbidity/design/development/diagnosis/disability/diseases/ELDERS/
ENGLAND/geriatrics/heart/high blood pressure/history/physical
disability/physical
function/PHYSICAL-DISABILITY/population/prevention/RISK/severity/stroke/
women
Kannel, W.B. (2000), Vital epidemiologic clues in heart failure. Journal of Clinical
Epidemiology, 53 (3), 229-235.
Abstract: The epidemiologic investigation of heart failure evolution by the Framingham
Heart Study has provided vital clues concerning the pathogenesis, predisposing
conditions, other predictive risk factors, and indicators of deteriorating
ventricular function related to the disease. This information is important in the
early detection of those susceptible to heart failure who are candidates for
preventive measures-of importance because the prevalence of the disease has not
declined despite the recent therapeutic advances. Epidemiologic investigation has
identified useful indicators for the disease including a low or falling vital
capacity suggesting diastolic dysfunction, a rapid resting heart rate in
compensation for a decreased stroke volume, and cardiomegaly indicating
myocardial hypertrophy or dilatation. Hypertension and coronary disease remain
the leading causes of the disease, and heart failure due to myocardial infarction
has increased in prevalence. Hypertension and coronary disease often coexist in
individuals who develop heart failure so that correction and prevention of these
conditions deserve a high priority. Early detection and correction of insulin
resistance is important because a threefold increase in the prevalence of diabetes
in the general population has serious implications for the incidence of heart
failure. In patients with hypertension, the occurrence of a myocardial infarction
increases the risk of developing heart failure five to sixfold, whereas angina
increases it less than twofold. In these patients, the presence of left ventricular
hypertrophy increases the risk of developing heart failure two- to three-fold.
Heart failure-related mortality remains unacceptably high, despite improvements
in treatment, indicating a need for early detection and treatment of predisposing
conditions. (C) 2000 Elsevier Science Inc. All rights reserved
Keywords: angina/coronary disease/detection/diabetes/DILATED
CARDIOMYOPATHY/DISEASE/ENGLAND/epidemiology/heart/heart
failure/HOSPITALIZATION/hypertension/HYPERTENSION/hypertrophy/incid
ence/infarction/insulin resistance/left ventricular
hypertrophy/MORTALITY/myocardial/myocardial
infarction/population/predisposing
conditions/prevalence/PREVENTION/PROGRESSION/risk/risk
factors/stroke/treatment/TRIALS
Ma, E., Gu, X.Q., Wu, X.H., Xu, T. and Haddad, G.G. (2001), Mutation in pre-mRNA
adenosine deaminase markedly attenuates neuronal tolerance to O-2 deprivation
in Drosophila melanogaster. Journal of Clinical Investigation, 107 (6), 685-693.
Abstract: O-2 deprivation can produce many devastating clinical conditions such as
myocardial infarct and stroke. The molecular mechanisms underlying the
inherent tissue susceptibility or tolerance to O-2 lack are, however, not well
defined. Since the fruit fly, Drosophila melanogaster, is extraordinarily tolerant
to O-2 deprivation, we have performed a genetic screen in the Drosophila to
search for loss-of-function mutants that are sensitive to low O-2. Here we report
on the genetic and molecular characterization of one of the genes identified from
this screen, named hypnos-2. This gene encodes a Drosophila pre-mRNA
adenosine deaminase (dADAR) and is expressed almost exclusively in the adult
central nervous system. Disruption of the dADAR gene results in totally unedited
sodium (Para), calcium (Dmca1A), and chloride (DrosGluCl-alpha) channels, a
very prolonged recovery from anoxic stupor, a vulnerability to heat shock and
increased O-2 demands, and neuronal degeneration in aged flies. These data
clearly demonstrate that, through the editing of ion channels as targets, dADAR,
for which there are mammalian homologues, is essential for adaptation to altered
environmental stresses such as O-2 deprivation and for the prevention of
premature neuronal degeneration
Keywords: adenosine/aged/BRAIN/calcium/central nervous
system/CT/DEFICIENT/essential/fruit/gene/GENE-EXPRESSION/genes/geneti
c/GLUTAMATE RECEPTORS/heat/ION CHANNELS/K+
CHANNELS/LETHALITY/mechanisms/myocardial/myocardial
infarct/NERVOUS-SYSTEM/prevention/PROTEIN/RNA-EDITING
ENZYME/sodium/stroke
Ruigomez, A., Johansson, S., Wallander, M.A. and Rodriguez, L.A.G. (2002), Incidence
of chronic atrial fibrillation in general practice and its treatment pattern. Journal
of Clinical Epidemiology, 55 (4), 358-363.
Abstract: The object of this article was to estimate the incidence rate of chronic atrial
fibrillation (AF) in a general practice setting, to identify factors predisposing to
its occurrence, and to describe treatment patterns in the year following the
diagnosis. The method used was a population-based cohort study using the
General Practice Research Database (GPRD) in the UK. We identified patients
aged 40-89 years with a first ever recorded diagnosis of AF. The diagnosis was
validated through a questionnaire sent to the general practitioners. A nested case-
control analysis was performed to assess risk factors for AF using 1,035
confirmed incident cases of chronic AF and a random sample of 5,000 controls
from the original source population. The incidence rate of chronic AF was 1.7
per 1,000 person- years, and increased markedly with age. The age adjusted rate
ratio among males was 1.4 (95% CI 1.2-1.6). The major risk factors were age,
high BMI, excessive alcohol consumption, and prior cardiovascular comorbidity,
in particular, valvular heart disease and heart failure. Digoxin was used in close
to 70% of the patients, and close to 15% did not receive any antiarrhythmic
treatment. Close to 40% did not receive either warfarin or aspirin in the 3 months
period after the diagnosis. Among the potential candidates for anticoagulation
only 22% of those aged 70 years or older were prescribed warfarin in comparison
to 49% among patients aged 40-69 years. Chronic AF is a disease of the elderly,
with women presenting a lower incidence rate than men specially in young age.
Age, weight, excessive alcohol consumption, and cardiovascular morbidity were
the main independent risk factors for AF. Less than half of patients with chronic
AF and no contraindications for anticoagulation received warfarin within the first
trimester after the diagnosis. (C) 2002 Elsevier Science Inc. All rights reserved
Keywords: AF/age/aged/alcohol/alcohol consumption/antiarrhythmic
treatment/anticoagulation/ANTICOAGULATION/ANTITHROMBOTIC
THERAPY/aspirin/atrial/atrial fibrillation/automated
database/cardiovascular/cardiovascular morbidity/chronic/chronic atrial
fibrillation/COHORT/cohort
study/comorbidity/control/diagnosis/disease/elderly/ENGLAND/epidemiology/E
PIDEMIOLOGY/fibrillation/general practice/heart/heart disease/heart
failure/incidence/men/morbidity/population/population-based/PREVALENCE/ri
sk/risk factors/RISK-FACTORS/Spain/STROKE
PREVENTION/treatment/warfarin/WARFARIN USE/weight/women
Ono, A. and Fujita, T. (2003), Stroke prevention in patients with atrial fibrillation.
Journal of Clinical Neuroscience, 10 (1), 71-73.
Abstract: We evaluated the antithrombotic therapy and eligibility for anticoagulation
before stroke in 30 patients with atrial fibrillation (AF) admitted to a district
hospital in Kochi, Japan from 1992 to 1998. The mean age was 77 +/- 10 years
old. Subtypes of ischemic stroke were classified as possibly cardioembolic in 26
(87%) patients and lacunar in four (13%). Eight (26.7%) patients died in the
acute phase and 15 (50%) were disabled at discharge. Most patients were eligible
for anticoagulation before stroke because of previously known AF (80%), high
risk for stroke (80%), absence of contraindications (83.3%), and good clinical
compliance (90%). The prescription rate of warfarin was, however, less than
20% even In high risk patients who needed anticoagulation. In conclusion,
underuse of warfarin and high eligibility for anticoagulation in stroke patients
with AF suggest that the chance of stroke prevention may be lost in many
patients with AF in clinical practice. (C) 2002 Elsevier Science Ltd. All rights
reserved
Keywords: acute/AF/age/ANTICOAGULATION/anticoagulation/antiplatelet
therapy/antithrombotic/antithrombotic therapy/atrial/atrial
fibrillation/cardioembolic/clinical
practice/CLINICAL-PRACTICE/COMMUNITY/fibrillation/high
risk/hospital/INTENSITY/ischemic/ISCHEMIC
STROKE/Japan/MULTICENTER/old/PREVALENCE/prevention/REGISTRY/r
isk/SCOTLAND/stroke/stroke patients/stroke
prevention/therapy/TRIAL/warfarin/WARFARIN USE
Abbott, R.D., Curb, J.D., Rodriguez, B.L., Masaki, K.H., Popper, J.S., Ross, G.W. and
Petrovitch, H. (2003), Age-related changes in risk factor effects on the incidence
of thromboembolic and hemorrhagic stroke. Journal of Clinical Epidemiology,
56 (5), 479-486.
Abstract: We examined the changes in risk factor effects on the incidence of
thromboembolic and hemorrhagic stroke as they may occur with age. Findings
were based on repeated risk factor measurements at four examinations over a
26-year period in 7589 men in the Honolulu Heart Program. After each
examination, 6 years of follow-up were available to assess risk factor effects on
the incidence of stroke over a broad range of ages (45-93 years). As compared
with normotensive men, the risk of thromboembolic stroke in the presence of
hypertension declined from a 7-fold excess in men aged 45 to 54 years to a
1.4-fold excess in men aged greater than or equal to75 (P 180 mmHg) may be
at higher risk for hemodynamic instability and neurological events during carotid
stenting. The greater the change in SBP, the more severe the neurological event
seems to be, but further studies in a greater number of patients are needed to
evaluate the potential causes of SBP fluctuations in an effort to avoid
neurological events
Keywords: age/angioplasty/ANGIOPLASTY/asymptomatic/balloon/blood
pressure/carotid/carotid artery/carotid artery stenosis/carotid stent/carotid
stenting/causes/changes/complications/EMBOLIZATION/ENDARTERECTOM
Y/high
risk/hypotension/HYPOTENSION/men/PLACEMENT/PREDICTORS/PREVE
NTION/risk/secondary/self-expanding
stent/stenosis/stent/stenting/stroke/systolic blood/systolic blood
pressure/THERAPIES/THERAPY/transient/transient ischemic attack/USA
Castriota, F., Cremonesi, A., Manetti, R., Liso, A., Oshola, K., Ricci, E. and Balestra, G.
(2002), Impact of cerebral protection devices on early outcome of carotid
stenting. Journal of Endovascular Therapy, 9 (6), 786-792.
Abstract: Purpose: To evaluate the impact of cerebral protection devices on the
procedural safety and outcome of carotid stent procedures. Methods: From June
1997 to July 2001, 275 consecutive patients (208 men; mean age 71 +/- 7.4 years)
underwent percutaneous angioplasty and/or stenting of the extracranial carotid
artery. In the first 125 (45.4%) patients, the procedures were performed without
cerebral protection. After January 2000, protection devices were routinely used
(150 [54.6%] patients), including the Angioguard filter, GuardWire occlusion
system, TRAP Vascular Filtration System, EPI Filter Wire, NeuroShield, Parodi
Anti-Embolism System, and Medicorp occlusive balloon. Results: The
percutaneous procedures were effective in 273 (99.3%) patients. No death or
major stroke occurred in either group. In the unprotected group, 5 (4.0%)
complications occurred: 3 (2.4%) minor strokes, 1 (0.8%) transient ischemic
attack (TIA), and 1 (0.8%) subarachnoid hemorrhage. In the patients treated
under cerebral protection, there were 2 (1.3%) complications: 1 (0.7%) minor
stroke and 1 (0.7%) subarachnoid hemorrhage. There were 4 (3.2%)
periprocedural embolic complications in the unprotected group versus 1 (0.7%)
in the protected patients. Conclusions: Our data suggest that percutaneous
dilation and stenting of the carotid arteries protected by cerebral protection
devices is feasible and effective. In a consecutive series, the use of the cerebral
protection systems reduced the acute neurological event rate related to embolic
complications by 79%
Keywords: acute/age/ANGIOPLASTY/arteries/ARTERY STENOSIS/balloon/balloon
occlusion systems/carotid/carotid angioplasty/carotid arteries/carotid
artery/carotid stent/carotid stenting/cerebral/cerebral protection/cerebral
protection devices/complications/death/EFFICACY/embolic
complications/EMBOLIC EVENTS/EXPERIENCE/filter systems/flow reversal
systems/hemorrhage/ischemic/Italy/men/outcome/PLACEMENT/PREVENTIO
N/protection/safety/stent/stenting/stroke/subarachnoid
hemorrhage/THERAPIES/THERAPY/TIA/transient/transient ischemic
attack/USA/use
Adami, C.A., Scuro, A., Spinamano, L., Galvagni, E., Antoniucci, D., Farello, G.A.,
Maglione, F., Manfrini, S., Mangialardi, N., Mansueto, G.C., Mascoli, F.,
Nardelli, E. and Tealdi, D. (2002), Use of the Parodi anti-embolism system in
carotid stenting: Italian trial results. Journal of Endovascular Therapy, 9 (2),
147-154.
Abstract: Purpose: To investigate the safety and efficacy of the Parodi anti-embolism
system (PAES) in establishing flow reversal in the internal carotid artery (ICA)
as a means of protecting against embolic phenomena during carotid stenting.
Methods: Seven centers participated in a nonrandomized, prospective trial of
carotid angioplasty and stenting under PAES protection in 30 patients (22 men;
mean age 72 years, range 49-88) with 15 symptomatic (>70%) and 15
asymptomatic (>80%) stenotic ICAs. Safety was defined as achieving sufficient
brain oxygenation during flow reversal as determined by level of awareness and
motor control. The presence of new or enhanced neurological deficits and death
were endpoints. Performance was based on angiographic evidence of successful
retrograde flow. Results: The PAES was positioned in all 30 patients, but
technical error and access-related difficulties prevented establishment of reversed
flow in 2. Among the 28 (93%) patients treated under PAES protection, 1 patient
developed aphasia after flow reversal, necessitating balloon deflation between
subsequent stages of the procedure. Three other adverse events included 1 case
of bradycardia and 2 cases of hypotension, with dysarthria and facial paresis in
one and temporary loss of consciousness in the other. All events resolved with
appropriate therapy, and there was no change from baseline in the neurological
status or brain scans at 24 hours. There were no strokes or neurological deficits at
30 days. Conclusions: The PAES appears to be a safe and effective means of
providing protection from embolic complications during carotid stenting
Keywords: adverse
events/age/angioplasty/asymptomatic/awareness/balloon/BALLOON
ANGIOPLASTY/brain/brain oxygenation/carotid/carotid angioplasty/carotid
artery/carotid stenting/CEREBRAL PROTECTION/cerebral
protection/complications/control/death/DEVICES/EFFICACY/EVENTS/flow
reversal/hypotension/internal carotid
artery/men/paresis/PLACEMENT/PREVENTION/protection/safety/status/stenti
ng/stroke/THERAPIES/THERAPY/trial/Wallstent
Mekaru, S., Fukumoto, I. and Makishi, T. (1995), Studies on Double-Side Shearing with
Parallel and Straight Cutting Edges (Prevention of Tool Breakage by Beveled
Punches with High Slenderness Ratio). Journal of Engineering for
Industry-Transactions of the Asme, 117 (1), 67-71.
Abstract: In the present investigation the cutting edge of a slender punch was bevelled in
an attempt to prevent bending or breakage in use. Tests with Kovar sheet showed
that use of a bevelled punch significantly reduces the risk of bending or breakage,
a particular problem when clearance on both sides of the punch is unbalanced.
This is because the punch guides itself in the later stage of the stroke. Tool life
tests shearing Kovar sheet with the bevelled punch produced a smaller burr on
the product than with the conventional punch. The application of such punches is
found to be most suitable for thin materials such as are used in the manufacture
of IC and LSI parts
Keywords: NEW-YORK/risk/stroke
Penfold, D., Styles, W.M. and Bulpitt, C.J. (1983), North-Hammersmith Stroke
Prevention Project. Journal of Epidemiology and Community Health, 37 (4),
310-314
Keywords: BRITISH/COMMUNITY/HEALTH
Wolfe, C.D.A., Taub, N.A., Woodrow, J., Richardson, E., Warburton, F.G. and Burney,
P.G.J. (1993), Does the Incidence, Severity, Or Case Fatality of Stroke Vary in
Southern England. Journal of Epidemiology and Community Health, 47 (2),
139-143.
Abstract: Study objectives-To determine differences in incidence and case fatality of
stroke in district health authorities with differing standardised mortality ratios
(SMR) for stroke in residents aged under 65 years in whom death from stroke is
considered 'avoidable'. Design-Registration of first ever strokes in three district
health authorities. Patients were assessed and followed up over one year by one
of three observers. Setting-West Lambeth, Lewisham and North Southwark, and
Tunbridge Wells District Health Authorities in south east England.
Participants-Patients under the age of 75 years having a first ever in a lifetime
stroke between 15 August 1989 and 14 August 1990. Measurements and main
results-Age specific incidence rates and survival time from stroke to death.
Severity was assessed in terms of the level of consciousness and the presence of
speech, urinary, and motor impairment within the first 24 hours of the stroke.
Altogether 386 strokes were registered. There was a significant difference in the
incidence rate between district health authorities in those aged under 65 (p25 kg/m(2)).
Conclusions - Taken together, the combination of cigarette smoking, excessive
body fat, and lack of exercise accounted for a major proportion of stroke cases in
the population studied. It appears that these easily identifiable factors related to
lifestyle are a major and possibly predominant cause of stroke, at least until the
age of 75
Keywords: age/aged/body mass
index/BRITISH/COMMUNITY/ENGLAND/exercise/HEALTH/lifestyle/MEN/
obesity/OVERWEIGHT/prevention/risk/RISK-FACTORS/sex/smoking/stroke/st
roke prevention/WOMEN
Hart, C.L., Hole, D.J. and Smith, G.D. (2001), The relation between questions indicating
transient ischaemic attack and stroke in 20 years of follow up in men and women
in the Renfrew/Paisley Study. Journal of Epidemiology and Community Health,
55 (9), 653-656.
Abstract: Study objective-Transient ischaemic attack (TIA) is often a precursor to stroke,
so identification of people experiencing TIA could assist in stroke prevention by
indicating those at high risk of stroke who would benefit most from intervention
for other stroke risk factors. The objective of this study was to investigate
whether answers to a simple questionnaire for TIA could predict the occurrence
of stroke in the following 20 years. Design-Prospective cohort study, conducted
between 1972 and 1976, with 20 years of follow up. Setting Renfrew and Paisley,
Scotland. Participants-7052 men and 8354 women aged 45-64 years at the time
of screening completed a questionnaire and attended a physical examination. The
questionnaire asked participants if they had ever, without warning, suddenly lost
the power of an arm, suddenly lost the power of a leg, suddenly been unable to
speak properly or suddenly lost consciousness. These four questions were taken
as indicators of TIA and were related to subsequent stroke mortality or hospital
admission. Main results-For women, each question was significantly related to
stroke risk, whereas for men only the question on loss of power of arm was
significantly related to stroke risk. Men and women answering two or more
questions positively had double the relative rate of stroke compared with men
and women answering none of the questions positively, even after adjusting for
other risk factors for stroke. Conclusions-A simple questionnaire for TIA could
help predict stroke over 20 years of follow up. Targeting men and women who
report TIA with early treatment could help to prevent strokes from occurring
Keywords: aged/ASSOCIATION/BRITISH/CEREBRAL ISCHEMIA/cohort
study/COMMUNITY/DISEASE/ENGLAND/HEALTH/high
risk/hospital/ischaemic/ISCHEMIC
ATTACKS/men/MORTALITY/POPULATION/prevention/PROGNOSIS/RENF
REW/RISK/risk factors/risk factors for stroke/screening/stroke/stroke
mortality/stroke prevention/TIA/transient/transient ischaemic
attack/treatment/women
Ebrahim, S., May, M., Ben Shlomo, Y., McCarron, P., Frankel, S., Yarnell, J. and Smith,
G.D. (2002), Sexual intercourse and risk of ischaemic stroke and coronary heart
disease: the Caerphilly study. Journal of Epidemiology and Community Health,
56 (2), 99-102.
Abstract: Objective: To examine the relation between frequency of sexual intercourse
and risk of ischaemic stroke and coronary heart disease. Design: Cohort study
with 20 year follow up., Setting: The town of Caerphilly, South Wales and five
adjacent villages. Subjects: 914 men aged 45-59 years at time of recruitment in
1979 to 1983. Main outcome measures: Ischaemic stroke and coronary heart
disease, all first events and fatal events. Results: Of the 914 men studied, 197
(21.5%) reported sexual intercourse less often than once a month, 231 (25.3%)
reported sexual intercourse twice or more a week, and the remaining 486 (53.2%)
men fell into the intermediate category. Frequency of sexual intercourse was not
associated with all first ischaemic stroke events: age adjusted odds ratios (95%
CI) for intermediate and low frequency of sexual intercourse of 0.61 (0.32 to
1.16) and 0.71 (0.34 to 1.49) respectively compared with the reference category
of high frequency. A graded relation with fatal coronary heart disease events was
observed in events recorded up to 10 years. The age adjusted relative risk (95%
CI) of fatal coronary heart disease contrasting low frequency of sexual
intercourse (that is, less than monthly) with the highest group (at least twice a
week) was 2.80 (1.13 to 6.96, test for trend, p=0.04) which was not attenuated by
adjustment for a wide range of potential confounders. Longer follow up to 20
years showed attenuation of this risk with odds of 1.69 (95% CI 0.90 to 3.20),
contrasting low frequency of sexual intercourse with the highest group.
Conclusions: The differential relation between frequency of sexual intercourse,
stroke and coronary heart disease suggests that confounding is an unlikely
explanation for the observed association with fatal coronary heart disease events.
Middle aged men should be heartened to know that frequent sexual intercourse is
not likely to result in a substantial increase in risk of strokes, and that some
protection from fatal coronary events may be an added bonus
Keywords: age/aged/BENIGN/BRITISH/COMMUNITY/coronary heart
disease/DEATH/disease/England/EXERTION/HEADACHES/HEALTH/heart/h
eart disease/HYPERTENSION/INFARCTION/ischaemic/ischaemic
stroke/LONDON/low
frequency/MEN/ORGASM/outcome/PHYSICAL-ACTIVITY/PREVENTION/p
rotection/recruitment/relative risk/risk/risk of ischaemic stroke/stroke
Lawlor, D.A., Bedford, C., Taylor, M. and Ebrahim, S. (2003), Geographical variation
in cardiovascular disease, risk factors, and their control in older women: British
Women's Heart and Health Study. Journal of Epidemiology and Community
Health, 57 (2), 134-140.
Abstract: Objectives: To measure the geographical variation in prevalence of
cardiovascular disease, risk factors, and their control in a nationally
representative sample of older British women. Methods: Baseline survey using
general practitioner record review, a self completed questionnaire, research nurse
interview, and physical examination in a randomly selected sample of women
aged 60-79 drawn from 23 towns in England, Scotland, and Wales. Results: Of
7173 women invited and eligible to participate, information was obtained on
4286 (60%). One in five women had a doctor diagnosis of any one of myocardial
infarction, angina, heart failure, stroke, or peripheral vascular disease. Fifty per
cent of women were hypertensive, 12% smoked, and over one quarter were
obese. Fifty per cent had a total cholesterol level greater than 6.5 mmol/l, though
only 3% had low high density lipoprotein concentrations. Cardiovascular disease
prevalence varied by geographical region being highest in Scotland: age adjusted
prevalence (95% confidence intervals) 25.0% (21.5% to 28.8%) and lowest in
South England: age adjusted prevalence (95% confidence intervals) 15.4%
(13.5% to 17.6%). The geographical variations in cardiovascular disease
prevalence were attenuated by adjustment for risk factors and socioeconomic
position; further adjustment for health service use (as indicated by aspirin or
statin use) reduced the differences further. However, variation remained even
after full adjustment for these factors: odds ratio (95% confidence intervals)
comparing Midlands and Wales to South England 1.15 (0.82 to 1.61) and
comparing Scotland to South England 1.53 (1.08 to 2.14). Of women with
cardiovascular disease, 12% were current smokers, a third had uncontrolled
hypertension, a third were obese, and 90% had a blood cholesterol over 5 mmol/l.
Only 41% were taking antiplatelet drugs and 22% were taking a statin.
Conclusions: Older British women have a higher prevalence of cardiovascular
disease and risk factors than previously documented. The workload
consequences of attempting to control risk factors and ensure optimal secondary
prevention for older British women are considerable. Geographical variations in
cardiovascular disease prevalence in older women are somewhat, but not fully,
explained by variations in major risk factors, socioeconomic position, and health
service utilisation
Keywords: age/aged/angina/antiplatelet/antiplatelet
drugs/aspirin/BRITISH/CARDIOLOGY/cardiovascular/cardiovascular
disease/cholesterol/CLINICAL-PRACTICE/COMMUNITY/control/DEPRIVAT
ION/diagnosis/disease/drugs/ENGLAND/HEALTH/heart/heart failure/high
density
lipoprotein/HYPERTENSION/INEQUALITIES/infarction/LONDON/MORTAL
ITY/myocardial/myocardial infarction/peripheral vascular
disease/prevalence/PREVENTION/RECOMMENDATIONS/research/review/ris
k/risk factors/secondary/secondary
prevention/statin/stroke/survey/TASK-FORCE/use/vascular/vascular
disease/women
Massberg, S., Sausbier, M., Klatt, P., Bauer, M., Pfeifer, A., Siess, W., Fassler, R., Ruth,
P., Krombach, F. and Hofmann, F. (1999), Increased adhesion and aggregation
of platelets lacking cyclic guanosine 3 ',5 '-monophosphate kinase I. Journal of
Experimental Medicine, 189 (8), 1255-1263.
Abstract: Atherosclerotic vascular lesions are considered to be a major cause of ischemic
diseases, including myocardial infarction and stroke. Platelet adhesion and
aggregation during ischemia- reperfusion are thought to be the initial steps
leading to remodeling and reocclusion of the postischemic vasculature. Nitric
oxide (NO) inhibits platelet aggregation and smooth muscle proliferation A
major downstream target of NO is cyclic guanosine 3',5'-monophosphate kinase I
(cGKI). To test the intravascular significance of the NO/cGKI signaling pathway
in vivo, we have studied platelet-endothelial cell and platelet- platelet
interactions during ischemia/reperfusion using cGKI- deficient (cGKI(-/-)) mice.
Platelet cGKI but not endothelial or smooth muscle cGKI is essential to prevent
intravascular adhesion and aggregation of platelets after ischemia. The defect in
platelet cGKI is not compensated by the cAMP/cAMP kinase pathway
supporting the essential role of cGKI in prevention of ischemia-induced platelet
adhesion and aggregation
Keywords: aggregation/CGMP/cyclic guanosine 3 '/5 '-monophosphate-dependent
protein kinase/DEPENDENT PROTEIN-KINASE/diseases/endothelial
cell/ENDOTHELIAL-CELLS/fluorescence
microscopy/infarction/INHIBITION/INTACT HUMAN
PLATELETS/ischemia/ischemic/MICE
LACKING/microcirculation/muscle/myocardial/myocardial
infarction/NEW-YORK/nitric
oxide/NITRIC-OXIDE/PHOSPHORYLATION/PLASMINOGEN-ACTIVATO
R/platelet
aggregation/platelets/prevention/reperfusion/smooth/stroke/vascular/vasculature/
VASODILATOR-STIMULATED PHOSPHOPROTEIN
MacGregor, E.A. and Hackshaw, A. (2002), Prevention of migraine in the pill-free
interval of combined oral contraceptives: A double-blind, placebo-controlled
pilot study using natural oestrogen supplements. Journal of Family Planning and
Reproductive Health Care, 28 (1), 27-31.
Abstract: Context. Migraine in the pill-free interval of combined oral contraceptives is
reported by many women, but there is little published information on possible
mechanisms and treatments. Objective. To determine whether the use of natural
oestrogen patches affected the occurrence and severity of migraine during the
pill-free interval. Design. A double-blind, placebo- controlled, randomised,
crossover study. Setting. The City of London Migraine Clinic. Participants.
Fourteen women with migraine during the pill-free interval. Interventions. 50
mug oestradiol patches (Evorel(TM)) used during the pill-free interval for two
cycles versus placebo for two cycles (total four cycles). Main outcome measures.
Number of pill-free intervals (Zero, one or two) during which migraine occurred;
number of days of migraine; severity of migraine; number of clays of migraine
accompanied by nausea, vomiting and/or photophobia. Results. Complete data
were available for 12 women and for two cycles for one woman. Use of 50 mug
oestrogen patches during the pill-free interval showed a trend towards reducing
the frequency and severity of migraine. Discussion. These results were not as
good as expected. However, we had originally aimed for 20 eligible women to
participate in the trial, but only 14 were recruited and only 12 completed the
study with full data for analysis. Conclusion. The results of this pilot study
suggest that use of 50 mug oestrogen patches during the pill-free interval may
reduce the frequency and severity of migraine at that time. This study should be
repeated with larger numbers of women and a higher dose of oestrogen
Keywords: ATTEMPTED
PROPHYLAXIS/CARE/CYCLE/England/ESTRADIOL/ESTROGEN-WITHD
RAWAL MIGRAINE/HEALTH/HEALTH-CARE/mechanisms/MENSTRUAL
MIGRAINE/migraine/oral
contraceptives/outcome/RISK/severity/STROKE/trial/use/women/YOUNG-WO
MEN
Antani, M.R., Beyth, R.J., Covinsky, K.E., Anderson, P.A., Miller, D.G., Cebul, R.D.,
Quinn, L.M. and Landefeld, C.S. (1996), Failure to prescribe warfarin to patients
with nonrheumatic atrial fibrillation. Journal of General Internal Medicine, 11
(12), 713-720.
Abstract: OBJECTIVE: To determine how often warfarin was prescribed to patients
with nonrheumatic atrial fibrillation in our community in 1992 when randomized
trials had demonstrated that warfarin could prevent stroke with little increase in
the rate of hemorrhage, and to determine whether warfarin was prescribed less
frequently to older patients-the patients at highest risk of stroke but of most
concern to physicians in terms of the safety of warfarin. DESIGN:
Cross-sectional study. Appropriateness of warfarin was classified for each
patient based on the independent judgments of three physicians applying relevant
evidence and guidelines. SETTING: Two teaching hospitals and five
community-based practices. PATIENTS: Consecutive patients with
nonrheumatic atrial fibrillation (n = 189). MEASUREMENTS AND MAIN
RESULTS: Warfarin was prescribed to 44 (23%) of the 189 patients. Warfarin
was judged appropriate in 98 patients (52%), of whom 36 (37%) were prescribed
warfarin. Warfarin was prescribed to 11 (14%) of 76 patients aged 75 years or
older with hypertension, diabetes mellitus, or past stroke, the group at highest
risk of stroke. In a multivariable logistic regression model controlling for
appropriateness of warfarin and other patient characteristics, patients aged 75
years or older were less likely than younger patients to be treated with warfarin
(odds ratio 0.25; 95% confidence interval 0.10, 0.65). CONCLUSIONS:
Warfarin was prescribed infrequently to these patients with nonrheumatic atrial
fibrillation, especially the older patients and even the patients for whom warfarin
was judged appropriate. These findings indicate a substantial opportunity to
prevent stroke
Keywords: aged/ANTICOAGULATION/ANTITHROMBOTIC THERAPY/atrial
fibrillation/CARE/CLINICAL-TRIALS/COMPLICATIONS/DESIGN/diabetes/
diabetes
mellitus/fibrillation/guidelines/hemorrhage/hypertension/INTERNAL/MEASUR
EMENT/nonrheumatic/PATIENT/physician
behavior/PHYSICIANS/PRACTICE GUIDELINES/PREDICTION/prescription
practices/PREVALENCE/PREVENTION/quality of
care/randomized/randomized trials/risk/safety/STROKE/stroke
prevention/trials/warfarin
Beyth, R.J., Antani, M.R., Covinsky, K.E., Miller, D.G., Chren, M.M., Quinn, L.M. and
Landefeld, C.S. (1996), Why isn't warfarin prescribed to patients with
nonrheumatic atrial fibrillation? Journal of General Internal Medicine, 11 (12),
721-728.
Abstract: OBJECTIVE: To determine the opinions of selected physicians in our
community about use of warfarin for patients with nonrheumatic atrial
fibrillation, and to determine the relation of the physicians' opinions to their
practices. DESIGN: Survey of physicians, using eight hypothetical clinical
vignettes to characterize physicians' opinions about use of warfarin in patients
with nonrheumatic atrial fibrillation, according to patient age, risk of bleeding,
and risk of stroke. SETTING: Two teaching hospitals and five community-based
practices. PARTICIPANTS: Eighty physicians who cared for 189 consecutive
patients with nonrheumatic atrial fibrillation. MEASUREMENTS AND MAIN
RESULTS: The survey response rate was 73%. Nearly all responding physicians
(90%) recommended warfarin for at least one vignette. However, physicians
recommended warfarin less often for vignettes depicting 85-year-old patients
than for matched vignettes depicting 88-year-old patients (odds ratio [OR] 0.03;
95% confidence interval [CI] 0.01, 0.08), and less often for cases with specified
risk factors for bleeding than for matched cases without the risk factors (OR 0.01;
95% CI 0.004, 0.03); warfarin was recommended more often for cases with a
recent stroke than for matched cases without this history (OR 8.2; 95% CI 3.6,
18). In practice, warfarin was prescribed more often (p less than or equal to .05)
by physicians reporting good personal experience and by those who had
favorable opinions about its use. However, even physicians with good experience
and favorable opinions did not prescribe warfarin to half of their patents for
whom warfarin was independently judged appropriate. CONCLUSIONS:
Physicians' opinions frequently opposed warfarin for older patients with
nonrheumatic atrial fibrillation, and for those with bleeding risk factors.
Physicians' opinions, as well as other barriers to warfarin therapy, most likely
contribute to its infrequent prescription
Keywords: age/ANTICOAGULATION/ANTITHROMBOTIC
THERAPY/ASPIRIN/atrial
fibrillation/ATTITUDES/CARE/DESIGN/fibrillation/history/INTERNAL/JUD
GMENT/MEASUREMENT/medical decision
making/nonrheumatic/OMISSION/PHYSICIAN/physician
opinions/PREDICTION/prescription practices/risk/risk factors/stroke/STROKE
PREVENTION/therapy/TRIAL/warfarin
Augustovski, F.A., Cantor, S.B., Thach, C.T. and Spann, S.J. (1998), Aspirin for
primary prevention of cardiovascular events. Journal of General Internal
Medicine, 13 (12), 824-835.
Abstract: OBJECTIVE: The use of aspirin for primary prevention of cardiovascular
events in the general population is controversial. The purpose of this study was
to create a versatile model to evaluate the effects of aspirin in the primary
prevention of cardiovascular events in patients with different risk profiles.
DESIGN:A Markov decision-analytic model evaluated the expected length and
quality of life for the cohort's next 10 years as measured by quality-adjusted
survival for the options of taking or not taking aspirin. SETTING: Hypothetical
model of patients in a primary care setting. PATIENTS: Several cohorts of
patients with a range of risk profiles typically seen in a primary care setting were
considered. Risk factors considered included gender, age, cholesterol levels,
systolic blood pressure, smoking status, diabetes, and presence of left ventricular
hypertrophy. The cohorts were followed for 10 years. Outcomes were
myocardial infarction, stroke, gastrointestinal bleed, ulcer, and death. MAIN
RESULTS: For the cases considered, the effects of aspirin varied according to
the cohort's risk profile. By taking aspirin, the lowest-risk cohort would be the
most harmed with a loss of 1.8 quality-adjusted life days by taking aspirin; the
highest risk cohort would achieve the most benefit with a gain of 11.3
quality-adjusted life days. Results without quality adjustment favored taking
aspirin in all the cohorts, with a gain of 0.73 to 8.04 days. The decision was
extremely sensitive to variations in the utility of taking aspirin and to aspirin's
effects on cardiovascular mortality. The model was robust to other probability
and utility changes within reasonable parameters. CONCLUSIONS: The
decision of whether to take aspirin as primary prevention for cardiovascular
events depends on patient risk. It is a harmful intervention for patients with no
risk factors, and it is beneficial in moderate and high-risk patients. The benefits
of aspirin in this population are comparable to those of other widely accepted
preventive strategies. It is especially dependent on the patient's risk profile,
patient preferences for the adverse effects of aspirin, and on the level of
beneficial effects of aspirin on cardiovascular-related mortality
Keywords: aspirin/blood pressure/cardiovascular disease/cardiovascular
events/cholesterol/COST-EFFECTIVENESS/decision
analysis/DISEASE/HEALTH-
PROFESSIONALS/hypertrophy/MORTALITY/myocardial
infarction/MYOCARDIAL-INFARCTION/NONVALVULAR
ATRIAL-FIBRILLATION/PATIENT/PREFERENCES/prevention/primary
care/primary prevention/PROPHYLAXIS/risk/risk factors/RISK PROFILE/risk
stratification/smoking/STROKE
Shorr, R.I., Johnson, K.C., Wan, J.Y., Sutton-Tyrrell, K., Pahor, M., Bailey, J.E. and
Applegate, W.B. (1998), The prognostic significance of asymptomatic carotid
bruits in the elderly. Journal of General Internal Medicine, 13 (2), 86-90.
Abstract: OBJECTIVE: To determine the association between asymptomatic carotid
bruits and the development of subsequent stroke in older adults with isolated
systolic hypertension. DESIGN: Retrospective cohort study. SETTING: The
Systolic Hypertension in the Elderly Program (SHEP), a 5-year randomized trial
testing the efficacy of treating systolic hypertension in noninstitutionalized
persons aged 60 years or older. From the original 4,736 SHEP participants, we
identified a cohort of 4,442 persons who had no prior history of stroke, transient
ischemic attack, or myocardial infarction at randomization. MEASUREMENTS
AND MAIN RESULTS: The end point for this ancillary study was the
development of a stroke. The average follow-up was 4.2 years. Carotid bruits
were found in 284 (6.4%) of the participants at baseline. Strokes developed in 21
(7.4%) of those with carotid bruits and in 210 (5.0%) of those without carotid
bruits. The unadjusted risk of stroke among persons with carotid bruits was 1.53
(95% confidence interval [CI] 0.98, 2.40). Adjusting for age, gender, race, blood
pressure, smoking, lipid levels, self-reported aspirin use, and treatment group
assignment, the relative risk of stroke among persons with asymptomatic carotid
bruits was 1.29 (95% CI 0.80, 2.06). Among SHEP enrollees aged 60 to 69 years,
there was a trend (p = .08) toward increased risk (relative risk [RR] 2.05: 95% CI
0.92, 4.68) of subsequent stroke in persons with, compared to those without,
carotid bruits. However, among enrollees aged 70 years or over, there was no
relation between carotid bruit and subsequent stroke (RR 0.98; 95% CI 0.55,
1.76). In no other subgroup of SHEP enrollees did the presence of carotid bruit
independently predict stroke. CONCLUSIONS: Although we cannot rule out a
small increased risk of stroke associated with bruits in asymptomatic SHEP
enrollees aged 60 to 69 years, the utility of carotid bruits as a marker for
increased risk of stroke among asymptomatic elderly with isolated systolic
hypertension aged 70 years or older is limited
Keywords: adults/AGE/aged/aspirin/asymptomatic/blood pressure/carotid/carotid
bruits/CLINICAL- SIGNIFICANCE/cohort study/CORONARY
HEART-DISEASE/DESIGN/development/elderly/history/hypertension/infarctio
n/isolated systolic hypertension/MEASUREMENT/myocardial
infarction/NECK/POPULATION/PREVENTION/PROGRAM/race/relative
risk/RISK/SHEP/smoking/STROKE/stroke/SYSTOLIC
HYPERTENSION/Systolic Hypertension in the Elderly Program
(SHEP)/transient/transient ischemic attack/treatment
Warshafsky, S., Packard, D., Marks, S.J., Sachdeva, N., Terashita, D.M., Kaufman, G.,
Song, K., Deluca, A.J., Peterson, S.J. and Frishman, W.H. (1999), Efficacy of
3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors for prevention of
stroke. Journal of General Internal Medicine, 14 (12), 763-774.
Abstract: OBJECTIVE: To determine if 3-hydroxy-3-methylglutaryl coenzyme A
(HMG-CoA) reductase inhibitors (statins) are effective in preventing fatal and
nonfatal strokes in patients at increased risk of coronary artery disease. DESIGN:
Mete-analysis of randomized controlled trials. Clinical trials were identified by a
computerized search of MEDLINE (1983 to June 1996), by an assessment of the
bibliographies of published studies, mete- analyses and reviews, and by
contacting pharmaceutical companies that manufacture statins. Trials were
included in the analysis if their patients were randomly allocated to a statin or
placebo group, and reported data on stroke events. Thirteen of 28 clinical trials
were selected for review. Data were extracted for details of study design, patient
characteristics, interventions, duration of therapy, cholesterol measurements, and
the number of fatal and nonfatal stroke events in each arm of therapy. Missing
data on stroke events were obtained by contacting the investigators of the clinical
trials. MAIN RESULTS: Among 19,921 randomized patients, the late of total
stroke in the placebo group was 2.38% (90% nonfatal and 10% fatal). In contrast,
patients who received statins had a 1.67% stroke rate. Using an exact stratified
analysis, the pooled odds ratio (OR) for total stroke was 0.70 (95% confidence
interval [CI] 0.57, 0.86; p = .0005). The pooled OR for nonfatal stroke was 0.64
(95% CI 0.51, 0.79; p = .00001), and the pooled OR for fatal stroke was 1.25
(95% CI 0.71, 2.24; p = .4973). In separate analyses, reductions in total and
nonfatal stroke risk were found to be significant only for trials of secondary
coronary disease prevention. Regression analysis showed no statistical
association between the magnitude of cholesterol reduction and the relative risk
for any stroke outcome. CONCLUSIONS:The available evidence clearly shows
that HMG-CoA reductase inhibitors reduce the morbidity associated with strokes
in patients at increased risk of cardiac events. Data from 13 placebo-controlled
trials suggest that on average one stroke is prevented for every 143 patients
treated with statins over a 4-year period
Keywords: cardiac/CAROTID ATHEROSCLEROSIS/cholesterol/clinical
trials/coronary artery disease/coronary disease/CORONARY-ARTERY
DISEASE/DESIGN/disease/ELEVATED APOLIPOPROTEIN-B/EXPANDED
CLINICAL-EVALUATION/HEART-DISEASE/HMG-CoA reductase
inhibitors/LIPID- LOWERING THERAPY/meta-analysis/MODERATE
HYPERCHOLESTEROLEMIA/morbidity/outcome/prevention/randomized/rand
omized controlled trials/relative risk/review/risk/SCANDINAVIAN
SIMVASTATIN SURVIVAL/SECONDARY
PREVENTION/SERUM-CHOLESTEROL LEVELS/statin/statins/stroke/stroke
outcome/stroke prevention/therapy/trials
Lafata, J.E., Martin, S.A., Kaatz, S. and Ward, R.E. (2000), The cost-effectiveness of
different management strategies for patients on chronic warfarin therapy. Journal
of General Internal Medicine, 15 (1), 31-37.
Abstract: OBJECTIVE:To examine the cost-effectiveness of moving from usual care to
more organized management strategies for patients on chronic warfarin therapy.
DESIGN:Using information available in the scientific literature, supplemented
with data from a large health system and, when necessary, expert opinion, we
constructed a 5-year Markov model to evaluate the health and economic
outcomes associated with each of three different anticoagulation management
approaches: usual care, anticoagulation clinic testing with a capillary monitor,
and patient self-testing with a capillary monitor. PATIENTS:Three hypothetical
cohorts of patients beginning long-term warfarin therapy were used to generate
model results. MAIN RESULTS:Model results indicated that moving from usual
care to anticoagulation clinic testing would result in a total of 1.7
thromboembolic events and 2.0 hemorrhagic events avoided per 100 patients
over 5 years. Another 4.0 thromboembolic events and 0.8 hemorrhagic events
would be avoided by moving to patient self-testing. When direct medical care
costs and those incurred by patients and their caregiver, in receiving care were
considered, patient self-testing was the most cost- effective alternative, resulting
in an overall cost saving. CONCLUSIONS:Results illustrate the potential health
and economic benefits of organized care management approaches and capillary
monitors in the management of patients receiving warfarin therapy
Keywords: anticoagulation/anticoagulation management/BLEEDING
COMPLICATIONS/cost/cost effectiveness/cost-effectiveness/cost-effectiveness
analysis/costs/decision analytic
model/DECISION-ANALYSIS/DISABILITY/health/LIFE/MONITOR/NONVA
LVULAR ATRIAL-FIBRILLATION/ORAL
ANTICOAGULANT-THERAPY/PREVENTION/RISK-FACTORS/STROKE
PATIENTS/therapy/thromboembolic events/warfarin
Weisbord, S.D., Whittle, J. and Brooks, R.C. (2001), Is warfarin really underused in
patients with atrial fibrillation? Journal of General Internal Medicine, 16 (11),
743-749.
Abstract: CONTEXT: There is agreement that warfarin decreases stroke risk in patients
with atrial fibrillation (AF), but prior studies suggest that warfarin is markedly
underused, for unclear reasons. OBJECTIVE: To determine if warfarin is
underused In the treatment of patients with atrial fibrillation. DESIGN:
Cross-sectional. SETTING: Tertiary care VA hospital. PATIENTS: All patients
with a hospital or outpatient diagnosis of AF between 10/1/95 and 5/31/98.
DATA COLLECTION:. One or more physician investigators reviewed pertinent
records for each patient. When any of the 3 investigators thought warfarin might
be indicated, the patient's primary care provider completed a survey regarding
why warfarin was not used. RESULTS: Of 1,289 AF patients, 844 (65%) had
filled at least 1 warfarin prescription. Of the 445 remaining, 19 had died, 5 had
inadequate medical records, and 54 received warfarin elsewhere, leaving 367
patients. Of these, 160 had no documented AF, 53 had only a history of AF, and
49 had only transient AF. Of the remaining 105 patients, 17 refused warfarin
therapy and 72 had documented contraindications to warfarin use including
bleeding risk or history, fall risk, alcohol abuse, or other compliance problems.
The reasons for not using warfarin among the 16 patients remaining included
provider oversight (n = 4) and various reasons suggesting provider knowledge
deficits. CONCLUSION: In contrast to prior studies that suggested that warfarin
is markedly underused, we found that few patients with AF and no
contraindication to anticoagulation were not receiving warfarin. We believe that
differing study methodologies, including the use of physician review and
provider survey, may explain our markedly different rate of warfarin
underutilization, although local institutional factors cannot be excluded. The
findings suggest that primary providers may be far more compliant with the
standard of care for patients with atrial fibrillation than previously believed
Keywords: AF/alcohol/ANTICOAGULATION/atrial
fibrillation/bleeding/COMMUNITY/CONTEXT/DESIGN/diagnosis/fibrillation/
history/hospital/HOSPITALS/institutional/knowledge/MANAGEMENT/medical
/NATIONAL PATTERNS/PATIENT/PHYSICIAN ATTITUDES/physician
practice/PREVALENCE/primary/primary care/QUALITY/quality of
care/review/risk/stroke/STROKE
PREVENTION/survey/THERAPY/transient/treatment/use/warfarin
Landon, B.E., Wilson, I.B., Wenger, N.S., Cohn, S.E., Fichtenbaum, C.J., Bozzette, S.A.,
Shapiro, M.F. and Cleary, P.D. (2002), Specialty training and specialization
among physicians who treat HIV/AIDS in the United States. Journal of General
Internal Medicine, 17 (1), 12-22.
Abstract: Objective: To assess the association of specialty training and experience in the
care of HIV disease with HIV-specific knowledge, referral patterns, and
HI-V-related education activities. Design. Cross-sectional survey. Setting: The
United States. Participants: Physicians caring for patients in the HIV Costs and
Service Utilization Study, a study of a probability sample of HIV-infected
individuals in the United States. Measurements and main results: Measures
included physicians' reports of specialty training and HIV caseload, scores on an
HIV-specific knowledge test, referral patterns, and attendance rates at
HIV-related educational activities. Approximately 72% (379) of the eligible
physicians completed a survey. Of these, 152 (40%) had infectious disease (ID)
training, and 213 (56%) were generalists; 4% of ID-trained physicians and 37%
of generalist physicians did not consider themselves HIV experts. The median
current caseloads were 150 and 200 patients for ID experts and generalist experts,
respectively. In contrast, the median caseload for non-expert generalists was 5.
Mean scores on the knowledge scale were similar for ID and generalist experts
(9.0 items correct out of 11 vs 8.5; P=not significant), but lower for generalist
non-experts (6.5 items correct; P50 were more
likely to have a high knowledge score (defined as 80% or more correct, odds
ratio [OR], 2.8; P=.04 and OR, 5.7; P90 mm Hg 24-h post dose), the
dose was doubled for a further 4 weeks. After 8 weeks felodipine-metoprolol
reduced supine BP significantly more than enalapril (19.7/12.0 mmHg and
11.1/7.2 mm Hg, respectively). The mean differences in change in BP between
treatments were 8.6/4.8 mm Hg in favour of felodipine- metoprolol (P = 0.001/P
60 years) may increase the risk of stroke. However, a J-shaped
relationship between both mortality and morbidity and blood pressure has been
reported in the untreated controls of the Hypertension in Elderly Patients in
primary care (HEP) study. In the European Working Party on High Blood
Pressure in the Elderly trial (EWPHE) there was a U-shaped relationship
between total mortality and treated systolic pressure, but a similar U-shaped
relationship was observed with diastolic pressure in patients on placebo. In
addition, patients with the lowest pressure during treatment showed the greatest
falls in body weight and haemoglobin concentrations, suggesting that the
increased mortality seen with lower blood pressure levels may have been an
expression of a deterioration in general health. Moreover, a U-shaped
relationship between blood pressure and mortality has been observed in the very
old (aged 80+ years). Conclusions: While it is premature to conclude, on the
basis of present evidence, that reducing blood pressure to the lower part of the
normal range is harmful in older patients, it appears prudent, nonetheless, not to
lower blood pressure excessively with treatment in this age group
Keywords: AGE/CORONARY HEART-DISEASE/DIASTOLIC
BLOOD-PRESSURE/ELDERLY/EPIDEMIOLOGY/EUROPEAN-
WORKING-PARTY/FLOW
RESERVE/FOLLOW-UP/HYPERTENSION/ISCHEMIC HEART
DISEASE/MORTALITY/MYOCARDIAL-INFARCTION/PRIMARY
PREVENTION TRIAL/STROKE/TREATED HYPERTENSION
Vonlutterotti, N., Camargo, M.J.F., Campbell, W.G., Mueller, F.B., Timmermans, P.B.,
Sealey, J.E. and Laragh, J.H. (1992), Angiotensin-Ii Receptor Antagonist Delays
Renal Damage and Stroke in Salt-Loaded Dahl Salt-Sensitive Rats. Journal of
Hypertension, 10 (9), 949-957.
Abstract: Objective: To study the effects of blockade of the renin- angiotensin system
upon the development of hypertension, end- organ damage and mortality in Dahl
salt-sensitive (DSS) rats using an angiotensin 11 receptor antagonist, losartan.
Design and methods: DSS rats (n = 186) were fed 8% NaCl from 6 to 16 weeks
of age. One group received losartan whilst the control group was untreated.
Changes in blood pressure and plasma renin activity (PRA), as well as renal and
cerebrovascular damage and survival were assessed during the study. Results:
Losartan blunted the blood pressure rise only transiently. Salt loading suppressed
PRA in both groups until week 4 and thereafter it rose more markedly in the
treated group. With no treatment renal lesions were first detected at 2 weeks, and
strokes at 6 weeks. However, losartan transiently decreased the incidence and
delayed the progression of renal damage and cerebrovascular lesions (strokes)
and increased survival. PRA correlated with renal damage and the incidence of
strokes in both groups. Blood pressure only partially affected survival, but did
not correlate with stroke incidence. Conclusions: These results indicate that
whereas the rise in blood pressure is dependent upon sodium loading, morbidity
and mortality in salt-loaded DSS rats are associated with activation of the
renin-angiotensin system and are only partially related to blood pressure
Keywords: ACTIVE ANTIHYPERTENSIVE
AGENT/BLOOD-PRESSURE/CALCIUM-ANTAGONISTS/CAPTOPRIL/CER
EBROVASCULAR
LESIONS/ENALAPRIL/HYPERTENSION/HYPERTROPHY/PLASMA-RENI
N/PREVENTION/RENAL LESIONS/RENIN ANGIOTENSIN SYSTEM/SALT
LOADING/SMOOTH-MUSCLE CELLS/SPONTANEOUSLY
HYPERTENSIVE RATS/SURVIVAL
Johannesson, M. and Fagerberg, B. (1992), A Health Economic Comparison of Diet and
Drug-Treatment in Obese Men with Mild Hypertension. Journal of Hypertension,
10 (9), 1063-1070.
Abstract: Objective: To compare dietary and antihypertensive drug treatment in obese
men with mild hypertension in economic terms. Design: A 6-week run-in period
followed by randomization to either diet or drug treatment, lasting for 1 year.
Blood pressure was measured blindly and serum lipid concentrations assessed at
run-in and after 1 year. A computer-based model was used in five
cost-effectiveness simulations with different assumptions as to the effect upon
coronary heart disease risk from the changes in diastolic blood pressure and
cholesterol, both total and high-density lipoprotein. A cost-benefit analysis was
also performed, calculated as willingness to pay for treatment, as assessed by
questionnaire, minus total cost. Setting: Outpatient clinic in city hospital. Patients:
Sixty- four men aged 40-69 years with body mass index greater-than-or- equal-to
26 kg/m2 and a diastolic blood pressure 90-104 mmHg when untreated were
recruited (screening after advertisement in newspaper). Exclusion criteria were
diabetes mellitus, organ damage secondary to hypertension, and diseases that
might have interfered with compliance and the interpretation of results. Sixty-one
patients completed the study. Interventions: Dietary treatment was based upon
weight reduction and sodium restriction. Drug treatment used a stepped-care
approach, with atenolol as the drug of first choice. Main outcome measures: Life
years gained and willingness to pay. Results: Drug treatment was the preferred
option in three of the five cost- effectiveness simulations. The cost-benefit
analysis did not show any difference between the two groups. Conclusions: Non-
pharmacological treatment seemed to be less cost-effective than drug treatment.
However, more studies and further methodological development are needed to
verify this finding
Keywords: BLOOD- PRESSURE/CORONARY HEART-DISEASE/COST BENEFIT
ANALYSIS/COST-EFFECTIVENESS ANALYSIS/ECONOMIC
EVALUATION/HEALTH
ECONOMICS/HYPERTENSION/METOPROLOL/MORTALITY/NONPHAR
MACOLOGICAL TREATMENT/PRIMARY
PREVENTION/STROKE/TRIALS/WILLINGNESS TO PAY
Whelton, P.K., Perneger, T.V., Brancati, F.L. and Klag, M.J. (1992), Epidemiology and
Prevention of Blood Pressure-Related Renal- Disease. Journal of Hypertension,
10 S77-S84.
Abstract: Aim: To examine the relationship between blood pressure and end-stage renal
disease. Method: Review of recent reports on blood pressure in relation to renal
function. Background: The incidence and prevalence of treated end-stage renal
disease are increasing progressively in economically developed countries. To
combat this problem, the treatment of established end-stage renal disease must be
complemented by strategies to treat and prevent risk factors for the development
of renal failure. Results: Severe hypertension and malignant hypertension are
well accepted as risk factors for renal insufficiency. Recent reports suggest a
strong relationship between blood pressure and renal function, throughout the
entire range of blood pressure. Most blood pressure-related renal disease can
probably be attributed to mild hypertension or a high normal blood pressure.
Conclusions: Additional clinical trials are needed to assess the value of different
antihypertensive drugs and different levels of blood pressure control in
preserving renal function in subjects at risk of blood pressure-related renal
disease. Primary prevention of hypertension may be an important complement to
the treatment of established hypertension in reducing the burden of renal disease
in the community
Keywords: AGE/ANTIHYPERTENSIVE TREATMENT/CARDIOVASCULAR
DISEASE/CORONARY HEART-DISEASE/DECLINE/DIABETIC
NEPHROPATHY/END-STAGE RENAL
FAILURE/EPIDEMIOLOGY/HYPERTENSION/KIDNEY
DISEASE/PREVENTION/PROGRESSION/RISK-FACTORS/STROKE
MORTALITY/TRENDS
King, R.A., Smith, R.M., Krishnan, R. and Cleary, E.G. (1992), Effects of Enalapril and
Hydralazine Treatment and Withdrawal Upon Cardiovascular Hypertrophy in
Stroke-Prone Spontaneously Hypertensive Rats. Journal of Hypertension, 10 (9),
919-928.
Abstract: Ojective: To test the hypothesis that effects of angiotensin converting enzyme
(ACE) inhibitors upon resistance vessel structure are responsible for their ability
to cause long-term reduction in blood pressure. Design: Stroke-prone
spontaneously hypertensive (SHRSP) and Wistar-Kyoto (WKY) rats were
treated with enalapril or hydralazine from 4 to 15 weeks of age. Effects upon
tail-cuff blood pressure, left ventricular hypertrophy and structural indices of the
superior mesenteric artery (SMA) and its resistance vessels were assessed at 11
weeks of treatment and up to 11 weeks post-treatment. Methods: Left ventricular
hypertrophy was assessed by left ventricular weight: body weight ratios.
Evidence of vascular structural change was obtained from tissue weight:body
weight ratios, levels of RNA, DNA and expression of alpha-actin and elastin
messenger (m)RNA. Results: The effects of enalapril and hydralazine upon left
ventricular hypertrophy in SHRSP were consistent with their respective effects
upon blood pressure. Both drugs prevented the development of medial
hypertrophy in SMA and resistance vessels. This was accompanied by
substantial reductions in RNA: DNA ratios. Alpha-actin mRNA levels were not
affected by either drug but elastin mRNA levels were reduced by both drugs.
During the first 12 days post-treatment there was evidence of structural change in
SMA accompanying the increases in blood pressure but importantly not in the
resistance vessels. Conclusion: The effects of enalapril upon left ventricular
hypertrophy and mesenteric arterial hypertrophy are totally consistent with
responses to blood pressure and the persistence of structural changes
post-treatment does not underlie the ability of the ACE inhibitors to persistantly
suppress hypertension
Keywords: ACID/ALPHA-ACTIN MESSENGER RNA/BLOOD-
PRESSURE/CAPTOPRIL/CARDIAC-HYPERTROPHY/COLLAGEN-SYNTH
ESIS/CONVERTING ENZYME-INHIBITION/ELASTIN MESSENGER
RNA/ENALAPRIL/HYDRALAZINE/HYPERTENSION/LONG-TERM/MESE
NTERIC ARTERIAL HYPERTROPHY/PREVENTION/STROKE-PRONE
SPONTANEOUSLY HYPERTENSIVE RAT/VASCULAR
STRUCTURE/VESSELS
Stier, C.T., Adler, L.A., Levine, S. and Chander, P.N. (1993), Stroke Prevention by
Losartan in Stroke-Prone Spontaneously Hypertensive Rats. Journal of
Hypertension, 11 S37-S42.
Abstract: Background: Chronic angiotensin converting enzyme (ACE) inhibitor therapy
with enalapril, captopril or ceranopril prevents the development of
cerebrovascular lesions in stroke- prone spontaneously hypertensive rats (SHRSP)
given a 1% NaCl solution to drink, with little or no effect on systolic blood
pressure. Objectives: To determine the effect of the orally active angiotensin
(Ang) II receptor antagonist losartan on blood pressure and stroke in SHRSP.
Methods: Losartan or vehicle was chronically administered to saline-drinking
SHRSP, and systolic blood pressure was monitored. The effect of losartan on
arterial blood pressure measured by radiotelemetry in enalapril-treated SHRSP
was also examined. Results: Oral losartan at 30mg/kg per day delayed the
development of severe hypertension and prevented stroke in saline-drinking
SHRSP. Losartan therapy at a dose of 10 mg/kg per day did not affect the
systolic blood pressure elevation but prevented the occurrence of cerebrovascular
lesions at least until 28 weeks of age. Radiotelemetric monitoring of arterial
blood pressure in enalapril-treated, saline-drinking SHRSP over a 3-month
period verified the maintenance of severe hypertension without any strokes.
Treatment with oral losartan at a dose of 30 mg/kg did not affect the blood
pressure of SHRSP chronically treated with enalapril. Conclusions: These results
are consistent with the theory that Ang II has an effect on the pathophysiology of
cerebrovascular lesion development in saline-drinking SHRSP. These findings
indicate that losartan has a protective action, similar to that previously observed
with ACE inhibitors, against the development of cerebrovascular lesions in
SHRSP in the absence of a blood pressure fall
Keywords: ANGIOTENSIN/ANGIOTENSIN-II RECEPTOR ANTAGONIST/BLOOD
PRESSURE/BLOOD-PRESSURE/CT/DUP-753/HYPERTENSION/II
RECEPTOR ANTAGONISTS/STROKE/STROKE-PRONE
SPONTANEOUSLY HYPERTENSIVE RATS
Minami, N. and Head, G.A. (1993), Relationship Between Cardiovascular Hypertrophy
and Cardiac Baroreflex Function in Spontaneously Hypertensive and Stroke-
Prone Rats. Journal of Hypertension, 11 (5), 523-533.
Abstract: Objective: To determine whether the reduced baroreceptor-heart rate reflex
sensitivity in genetically hypertensive rats is related to the level of cardiac or
vascular hypertrophy. Design: Young spontaneously hypertensive rats (SHR),
stroke- prone hypertensive rats (SHRSP) and Wistar-Kyoto (WKY) rats were
treated chronically with the angiotensin converting enzyme (ACE) inhibitor
perindopril in different regimens in order to produce a wide-ranging combination
of cardiac and vascular hypertrophy. Methods: All strains were treated with
perindopril (0.1, 0.3, 1 or 3 mg/kg per day) in their drinking water from 4 until 9
weeks of age. Additional groups of SHR were treated with perindopril (3 mg/kg
per day) from 4 until 12 weeks and from 4 until 14 weeks of age. At 13 weeks of
age all animals were chronically instrumented with arterial and venous catheters.
One week later, steady-state sigmoidal mean arterial pressure-heart rate reflex
curves were obtained in the conscious rats by the injection of pressor and
depressor agents before and after the administration of atenolol (1 mg/kg,
intravenously) to determine the vagal component. The minimum and the
maximum blood pressure produced by nitroprusside and methoxamine,
respectively, after simultaneous ganglion and beta-adrenoceptor blockade were
used as an index of whole body vascular hypertrophy. The left ventricular to
body weight ratio was measured at the end of the experiment. Results: At 14
weeks of age, mean arterial pressure, the maximum and minimum autonomically
blocked blood pressure and the left ventricular to body weight ratio were 34, 20,
9 and 17% higher, respectively, in SHR, and 56, 35, 27 and 39% higher,
respectively, in SHRSP than in WKY rats. Perindopril treatment
dose-dependently reduced both cardiac and vascular hypertrophy but to different
extents. The highest doses reduced mean arterial pressure and the autonomically
blocked maximum and minimum blood pressure in both hypertensive strains to
the levels of untreated WKY rats but approximately 50% of the cardiac
hypertrophy was still present. The left ventricular to body weight ratio was
normalized in SHR only with the longer term perindopril treatments. A
comparison of the baroreflex function curves in untreated SHR and SHRSP
showed that the vagal component of the heart rate range was markedly reduced
compared to that in WKY rats. Treated SHRSP had a normal mean arterial
pressure and a normal autonomically blocked maximum and minimum blood
pressure, but their vagal heart rate range was only 63% of that in WKY rats. The
heart rate range in SHR treated from 4 to 9 weeks of age was only marginally
greater than that of untreated SHR, despite prevention of hypertension and
vascular hypertrophy. In SHR treated from 4 until 12 weeks of age, which
prevented cardiac hypertrophy, the vagal heart rate range was markedly greater.
With perindopril from the age of 4 to 14 weeks, the vagal baroreflex heart rate
range was similar to that of WKY rats. Thus the improvement in the vagal heart
rate range was more closely related to the prevention of cardiac hypertrophy (r =
0.73, P20 weeks) untreated WKY rats and untreated
SHRSP; SHRSP treated with perindopril, and age- and sex-matched control
SHRSP; and SHRSP treated with hydralazine and hydrochlorothiazide and age-
and sex-matched control SHRSP. The effects of treatment of the SHRSP with
perindopril for 30 days on vascular smooth muscle polyploidy and growth
kinetics were measured and compared with the effects of equivalent
antihypertensive doses of hydralazine and hydrochlorothiazide. Methods:
Vascular smooth muscle polyploidy was measured using flow-cytometry DNA
analysis of freshly harvested cells. Growth curves were performed on cultured
aortic cells. Plasma renin activity was measured by an antibody-trapping method,
plasma angiotensin II (Ang II) by radioimmunoassay and plasma ACE activity
by a colorimetric method. Cardiac hypertrophy was evaluated by measuring the
heart weight:body weight and left ventricle + septum weight:body weight ratios.
Results: The SHRSP had markedly and significantly elevated G(2) + M phase of
the cell cycle. Treatment with perindopril resulted in a significant reduction in
polyploidy in the SHRSP, whereas treatment with hydralazine and
hydrochlorothiazide had no effect on the percentage of cells in the G(2) + M
phase of the cell cycle. The regression of polyploidy after treatment with
perindopril was associated with a significant reduction in the concentration of
Ang II and ACE activity, and with a significant regression of cardiac
hypertrophy. Increased mitogenesis of cultured vascular smooth muscle cells
from the SHRSP was not altered by treatment with perindopril. Conclusions:
ACE inhibition reduces vascular smooth muscle polyploidy in large conduit
arteries. This type of vascular protection is mediated by the reduced Ang II and
possibly by increased kinins level, rather than by the hypotensive effect alone
Keywords: ABNORMALITIES/angiotensin/angiotensin II/ANGIOTENSIN-II/CELL
CYCLE/CELL
HYPERTROPHY/DNA/ENGLAND/GENETIC-HYPERTENSION/GROWTH-
CHARACTERISTICS/heart/HYPERPLASIA/HYPERPLOIDY/HYPERTENSI
ON/hypertrophy/muscle/PERINDOPRIL/POLYPLOIDY/PREVENTION/rats/R
ESISTANCE VESSELS/SHRSP/smooth/SMOOTH MUSCLE
CELLS/treatment/vascular/WISTAR-KYOTO RATS
Lee, R.M.K.W., Wang, H. and Smeda, J.S. (1996), Perindopril treatment in the
prevention of stroke in experimental animals. Journal of Hypertension, 14
S29-S33.
Abstract: Objective To determine the effect of perindopril treatment and treatment
withdrawal in the prevention of stroke in male stroke-prone spontaneously
hypertensive rats (SPSHR). Design After weaning at 4 weeks of age, male
SPSHR were given a Japanese-style rat diet which induces stroke in these
animals. Beginning at 6 weeks of age, SPSHR were treated with either distilled
water (control) or different daily dosages of perindopril (1 or 4 mg/kg) by gavage
for 24 weeks followed by treatment withdrawl. Additional subgroups were
treated with the 4 mg/kg dose for different durations (8, 12 or 24 weeks) before
treatment withdrawal. Treatment effects on blood pressure, heart rate and body
weight were studied during the treatment period and after the withdrawal of the
treatment. Myogenic and mechanical properties of the middle cerebral arteries
were studied in control SPSHR that had developed stroke, in treated SPSHR at
the end of the treatment period, and at certain intervals after the withdrawal of
the treatment. Methods Systolic blood pressure, heart rate and body weight of
control and treated SPSHR were determined at regular intervals before, during
and after the treatment withdrawal periods until they died from stroke, or until 42
or 43 weeks of age when the study was terminated. Functional studies of the
cerebral arteries were carried out using a pressurized artery system. At necropsy,
macroscopic and microscopic examinations were made of the kidneys and brain.
Results Untreated SPSHR usually died of stroke-related complications by 14
weeks of age. The middle cerebral arteries from these animals had lost their
ability to contract in response to pressure increase. Chronic treatment of SPSHR
with perindopril when initiated at 6 weeks of age attenuated the sharp blood
pressure rise, and prevented the development of stroke during the treatment
period. This was associated with the preservation of the myogenic response of
the middle cerebral arteries to pressure increase, and the prevention of tissue
damage in the kidneys and brain. After withdrawl of the treatment, SPSHR
treated for a longer period (12 or 24 weeks) also survived longer than those
treated for a shorter period (8 weeks). The subsequent loss of myogenic response
in the middle cerebral arteries was associated with the development of stroke and
death in these treatment withdrawl groups. Conclusion Chronic treatment with
perindopril is beneficial for the prevention of stroke in SPSHR, through the
preservation of the myogenic response properties of the cerebral arteries, and the
attenuation of tissue damage in the brain and kidneys
Keywords: age/blood pressure/BLOOD-PRESSURE/brain/cerebral/cerebral
artery/complications/control/CONVERTING-ENZYME-INHIBITOR/developm
ent/diet/ENALAPRIL/ENGLAND/heart/HEMORRHAGIC
STROKE/HYPERTENSION/HYPERTROPHY/LONG-TERM/myogenic
response/perindopril/prevention/rat/rats/RESISTANCE
ARTERIES/SPONTANEOUSLY HYPERTENSIVE RATS/stroke/stroke-prone
spontaneously hypertensive rats/treatment/TREATMENT
WITHDRAWAL/VASCULAR STRUCTURE
Anderson, C.S. (1996), Contribution of prevention to vascular cerebral disease
management. Journal of Hypertension, 14 S25-S28.
Abstract: Background Epidemiological studies suggest that significant reductions in the
incidence of stroke, as with coronary heart disease, can be expected by reducing
the prevalence or shifting the distribution of risk factors across the entire
population. Thus, identifying risk factors and intervening to control or modify
them remains the most important means of further reducing the incidence and
case fatality of stroke in developed countries, and controlling the emerging
epidemic of cardiovascular disease in developing countries. All people should be
encouraged to stop smoking, reduce weight, and increase physical activity and
the consumption of fruit and vegetables. Methods The high-risk strategy involves
the identification and management of people at high risk of developing stroke.
Therapies of proven benefit in the prevention of stroke among certain individuals
are blood pressure lowering therapy, antiplatelet therapy, anticoagulation therapy
and carotid endarterectomy. Evidence is mounting that aggressive treatment of
hypercholestrolaemia and hyperglycaemia is also effective in reducing the risk of
stroke, but the role of aspirin and carotid endarterectomy in the primary
prevention of stroke remains uncertain. This article will review strategies for the
prevention of stroke, except blood pressure lowering therapy, which is discussed
elsewhere, and address some of the questions about which individuals have the
most to gain from various interventions
Keywords: anticoagulation/antiplatelet therapy/aspirin/ATRIAL-FIBRILLATION/blood
pressure/cardiovascular disease/carotid/carotid endarterectomy/case
fatality/cerebral/clinical trials/control/coronary heart
disease/endarterectomy/ENGLAND/fruit/heart/high-risk
strategy/HONOLULU-HEART-PROGRAM/HYPERTENSION/incidence/MEN
/physical activity/PHYSICAL-ACTIVITY/population
strategy/prevention/primary prevention/risk/risk
factors/RISK-FACTORS/SMOKING/STROKE/stroke
incidence/therapy/treatment/vascular
MacMahon, S. (1996), Blood pressure and the prevention of stroke. Journal of
Hypertension, 14 S39-S46.
Abstract: Relationship between blood pressure and stroke Data from prospective
observational studies indicate that usual levels of blood pressure are directly and
continuously related to the risk of initial stroke. A prolonged difference in usual
blood pressure levels of just 9/5 mmHg is associated with approximately a
one-third difference in stroke risk, with similar proportional effects in
hypertensives and normotensives. Recent data from studies of individuals with a
history of cerebrovascular disease indicate a similar association between blood
pressure and the risk of recurrent stroke. Effects of treatment on stroke The
results of randomized trials of blood pressure-lowering drugs in hypertensive
patients suggest that much or all of the long-term potential stroke avoidance
associated with prolonged blood pressure differences can be achieved within just
a few years of beginning treatment. Overall, in 17 randomized trials of
antihypertensive treatment a net blood pressure reduction of 10-12 mmHg
systolic and 5-6 mmHg diastolic conferred a reduction in stroke incidence of
38% (SD 4), with similar reductions in fatal and non-fatal stroke. Because the
proportional effects of treatment were similar in higher and lower risk patient
groups, the absolute effects of treatment on stroke varied in direct proportion to
the background risk of stroke. The greatest potential benefits were observed
among those with a history of cerebrovascular disease; however, the results of
the trials conducted in patients with a history of stroke or transient ischaemic
attack, although promising, were not definitive. New trials are required to
determine more reliably the effects of blood pressure lowering in patients with
cerebrovascular disease
Keywords: antihypertensive treatment/blood pressure/cerebrovascular/cerebrovascular
disease/CORONARY
HEART-DISEASE/drugs/ENGLAND/epidemiology/history/HYPERTENSION/i
ncidence/JAPAN/MEN/MORBIDITY/MORTALITY/MULTIVARIATE-ANAL
YSIS/observational studies/prevention/randomized/randomized trials/recurrent
stroke/risk/RISK-FACTORS/stroke/stroke
incidence/SURVIVORS/transient/treatment/TRIAL/TRIALS
Sleight, P. (1996), Primary prevention of coronary heart disease in hypertension. Journal
of Hypertension, 14 S35-S38.
Abstract: Mortality from myocardial infarction Primary prevention of coronary heart
disease in hypertension is important because the mortality among those who have
suffered a myocardial infarction is around 50% within 1 month of the infarction.
Although the mortality of those who reach hospital has about halved over the last
decade (to about 8%), prevention is the only way to affect coronary mortality
overall. Overall prevention of coronary heart disease There are several proven
strategies, involving both drugs and lifestyle changes. Stopping smoking is the
most powerful, but exercise and reduction of dietary fats and salt are also
important; the latter will need co-operation with the food industry. Treating
hypertensives with a coronary risk Lipid-lowering drugs will be needed for some,
but not all hypertensives, depending on the coronary risk Some drug treatments
which lower blood pressure (e.g. short-acting formulations of nifedipine) may
not reduce the coronary risk; further data or newer preparations are awaited.
Potassium- sparing diuretics (particularly in elderly patients) and/or
beta-blockers remain the first choice for primary prevention. If a calcium channel
blocker is needed, verapamil or diltiazem are useful in patients with no left
ventricular dysfunction
Keywords:
aspirin/BLOOD-PRESSURE/exercise/hypertension/lifestyle/lipids/MEN/mortali
ty/salt/smoking/statins/STROKE
Menard, J. and Chatellier, G. (1996), Integration of trial, meta-analysis and cohort
results with treatment guidelines. Journal of Hypertension, 14 S129-S133.
Abstract: Importance of guidelines Guidelines to medical practice are of vital
importance because of the fast and uncontrolled introduction of new technologies,
increasing amounts of information, including contradictory results, high levels of
inappropriate care and increased financial pressure. Thus guidelines can help
solve common problems in all health care systems worldwide. Preparation of
guidelines In preparing guidelines, a synthesis of results from the literature
prepared by a single expert must be compared with syntheses done by others, and
a consensus recommendation may then be issued. Such a recommendation will
not be based exclusively on the results of controlled trials, even when they have
indisputable internal validity. There is still a need for a value judgement within a
particular psychological and socio-economic context. Freedom for physician It is
important to preserve the physician's freedom to prescribe drugs or not in
conjunction with informed choice by the patient concerning the risks of any
long-term drug intervention, even if this freedom of choice does not fit with the
expectations of 'managed' care or third-party payers
Keywords: BLOOD- PRESSURE/cohort studies/CORONARY
HEART-DISEASE/HYPERTENSION/MEN/meta-analysis/PRIMARY-PREVE
NTION TRIAL/RECOMMENDATIONS/STROKE/treatment guidelines/trials
Lees, K.R. and Dyker, A.G. (1996), Blood pressure control after acute stroke. Journal of
Hypertension, 14 S35-S38.
Abstract: Background Although long-term blood pressure control is known to prevent
stroke, acute blood pressure reduction after stroke is associated with worse
neurological and functional outcome. Vasoactive drug treatment after stroke
Chronic blood pressure reduction for secondary prevention of stroke is presently
being tested within the PROGRESS trial. This study uses angiotensin- converting
enzyme (ACE) inhibitor-based treatment (perindopril) versus placebo. ACE
inhibitors may reduce blood pressure without adversely affecting cerebral blood
flow. We have recently reported elsewhere that perindopril 4 mg once daily,
initiated within 2-7 days of acute ischaemic stroke, reduces blood pressure
without adverse effects on cerebral blood flow as measured by Doppler
ultrasound. Nevertheless the optimal policy with regard to blood pressure
management in the first 48 h after acute stroke remains uncertain. Conclusions A
clinical trial is proposed to establish whether it is better to maintain pre-existing
antihypertensive therapy or to discontinue this temporarily
Keywords: acute/ACUTE ISCHEMIC STROKE/angiotensin/blood pressure/blood
pressure control/cerebral/cerebral blood flow/control/CONVERTING
ENZYME-INHIBITION/Doppler/Doppler
ultrasound/ENGLAND/FLOW/HYPERTENSION/ischaemic stroke/NMDA
ANTAGONIST CNS-1102/perindopril/prevention/secondary
prevention/STREPTOKINASE/stroke/therapy/treatment/TRIAL/VOLUNTEER
S
Chalmers, J., Macmahon, S., Bousser, M.G., Cutler, J., Donnan, G., Hansson, L., Harrap,
S., Liu, L.S., Mancia, G., Menard, J., Omae, T., Reid, J., Rodgers, A., Warlow,
C., Culpan, A., Currie, R., Flett, S., Neal, B., Milne, A., Davis, S., Gong, L.S.,
Sega, R., Yamaguchi, T., Terent, A., Lees, K., Williams, F., Wang, J.G., Wang,
W., Biousse, V., Tzourio, C., Crespi, S., Fujimoto, K., Marttala, K., Fenton, J.
and McIlvenna, Y. (1996), PROGRESS - Perindopril protection against recurrent
stroke study: Status in July 1996. Journal of Hypertension, 14 S47-S51.
Abstract: Objectives The primary objective of PROGRESS is to determine reliably the
efficacy of lowering blood pressure for the prevention of stroke in patients with a
history of cerebrovascular disease. Design PROGRESS is a randomized,
double-blind, placebo-controlled trial investigating the effects on the incidence
of stroke and other major cardiovascular events and dementia of treatment with
the angiotensin-converting enzyme inhibitor perindopril, alone or in combination
with the diuretic indapamide. Methods The study population comprises 6000
normotensive or hypertensive patients with a history of stroke or transient
ischaemic attack within the previous 5 years. The study is being conducted in
over 160 centres in seven regions: Australia and New Zealand, The People's
Republic of China, France and Belgium, Italy, Japan, Sweden and the United
Kingdom. Computerized randomization to active treatment or placebo is
performed by fax direct to Auckland, New Zealand. The primary study outcome
is total stroke and secondary outcomes include fatal or non-fatal stroke, total
major cardiovascular events and deaths, cognitive function and disability.
Patients will be followed for a minimum of 4 years after randomization. Results
By 16 July 1996, 162 local clinical centres had been registered across the seven
regions, and 1682 patients, 49% with a history of hypertension, had been
randomly assigned to receive active treatment or placebo, with 65% allocated to
the combination of perindopril and indapamide or double placebo, and 35% to
perindopril alone or single placebo. Three months after randomization, the blood
pressure difference between the treatment and control groups among the first 182
patients randomized was 11.9 mmHg (systolic) and 3.9 mmHg (diastolic). Six
strokes and two non-stroke cardiovascular deaths have been recorded after a total
of 3174 patient-months of follow-up. Conclusions Observations made so far
confirm that full recruitment into the study is feasible and that treatment with
perindopril and indapamide is well tolerated in the study population. The blood
pressure differences between control and treatment groups recorded so far
suggest that the study should have the power to achieve its primary objectives,
provided compliance with treatment is satisfactory and 6000 patients are
successfully recruited and followed for 4-5 years
Keywords: angiotensin-converting enzyme inhibitors/Australia/blood
pressure/cardiovascular events/cerebrovascular/cerebrovascular disease/cognitive
function/control/dementia/DISEASE/ENGLAND/history/hypertension/incidence
/indapamide/perindopril/prevention/randomized/randomized clinical
trial/recruitment/recurrent stroke/stroke/transient/treatment/United Kingdom
Chalmers, J., MacMahon, S., Bousser, M.G., Cutler, J., Donnan, G., Hansson, L., Harrap,
S., Liu, L.S., Mancia, G., Menard, J., Omae, T., Reid, J., Rodgers, A. and
Warlow, C. (1996), Blood pressure lowering for the secondary prevention of
stroke: Rationale and design for PROGRESS. Journal of Hypertension, 14
S41-S45.
Abstract: Background Usual blood pressure levels have been shown to be directly and
continuously associated with the risks of initial and recurrent stroke. Blood
pressure lowering has been demonstrated to reduce the risk of a first stroke in
hypertensive patients, but there is uncertainty about the effects of reducing blood
pressure in patients with a history of cerebrovascular disease, for whom stroke
risks are particularly high, The primary objective of the Perindopril Protection
Against Recurrent Stroke Study (PROGRESS) is to determine the effects of
blood pressure reduction on stroke risk in patients with a history of
cerebrovascular disease. Design and treatment PROGRESS is a randomized,
double-blind, placebo-controlled clinical trial of an angiotensin converting
enzyme (ACE) inhibitor-based blood pressure lowering treatment regimen.
Before randomization, there is a 4-week run-in phase on open-label treatment,
after which patients are assigned to continued treatment or to placebo. Following
randomization, the trial treatments comprise perindopril (4 mg daily) plus
indapamide (2.5 mg daily) or matching placebos for patients without an
indication for or contraindication to treatment with a diuretic, and perindopril
alone or matching placebo for all other patients. The scheduled duration of
treatment and follow- up is a minimum of 4 years. Patients The study will
involve 6000 patients with a proven transient ischaemic attack (including
amaurosis fugax) or stroke (cerebral infarct, cerebral haemorrhage or stroke of
unknown type) in the past 5 years. The patients selected will have no known
definite indication for or contraindication to treatment with an ACE inhibitor and
no disability likely to prevent regular attendance at study clinics. Patients will be
recruited from collaborating clinical centres in Australia, Belgium, China, France,
Italy, Japan, New Zealand, Sweden and the United Kingdom. Major outcomes
Stroke is the primary study outcome, and secondary outcomes include fatal or
disabling strokes, total major cardiovascular events, cardiovascular deaths and
dementia
Keywords: angiotensin converting enzyme inhibitors/cardiovascular events/cognitive
function/CORONARY
HEART-DISEASE/dementia/HYPERTENSION/ischaemia/secondary
prevention/stroke/SURVIVORS/TRIAL/TRIALS
Sever, P.S. and Mackay, J.A. (1996), The hypertension trials. Journal of Hypertension,
14 S29-S33.
Abstract: Established antihypertensive treatment Previous studies have clearly
demonstarted the benefits of antihypertensive therapy, particularly in reducing
the incidence of stroke. However, there is still concern that the full potenial for
reversing coronary heart disease in the hypertensive patient has not been realized
by treatment with established agents, the diuretics and the beta-blockers. Trials
on newer agents A question that still remains to be answered is whether
treatment regimens based on alternative drugs, including calcium channel
blocking agents and angiotensin converting enzyme inhibitors, will confer an
advantage over older drugs. This question is at last being addressed in long-term
morbidity and mortality trials with these newer agents
Keywords: BLOOD-PRESSURE/CORONARY
HEART-DISEASE/hypertension/MEN/morbidity/MORBIDITY/MORTALITY/
mortality/PRIMARY PREVENTION/STROKE/trials
Strandgaard, S. (1996), Hypertension and stroke. Journal of Hypertension, 14 S23-S27.
Abstract: Hypertension and stroke Hypertension is a major risk factor for stroke, and
stroke prevention is the most important achievement of modern antihypertensive
treatment. In controlled trials, a few years of this treatment can eliminate the
entire excess stroke risk associated with hypertension. tn observational studies,
stroke risk appears to be not always fully reversible when the blood pressure is
lowered with drugs. Hypertension is associated with an increased incidence of
both haemorrhagic, ischaemic and lacunar stroke. It is likely that
antihypertensive treatment prevents all these types of strokes as well as transient
ischaemic attacks. Acute stroke In acute stroke, a transient rise in blood pressure
is common, in some cases superimposed on chronic hypertension. No major
controlled trials have reported findings on whether blood pressure should be
towered acutely in such patients. On the basis of observational studies and
haemodynamic considerations it seems prudent to leave all but the highest blood
pressures in acute stroke to settle spontaneously. Ischaemic stroke Ischaemic
stroke may occasionally be precipitated by overzealous blood pressure reduction.
This has been reported in particular in the initial treatment of very severe
hypertension, and occasionally in the elderly hypertensive. It may also occur in
the rare cases where transient cerebral ischaemia is haemodynamically induced.
(C) Rapid Science Publishers
Keywords: acute/ACUTE ISCHEMIC STROKES/ANTIHYPERTENSIVE
THERAPY/antihypertensive treatment/blood
pressure/BLOOD-PRESSURE/cerebral/cerebral
ischaemia/COMPUTED-TOMOGRAPHY/CORONARY
HEART-DISEASE/drugs/elderly/ENGLAND/HYPERTENSION/incidence/INF
ARCTION/ischaemia/lacunar stroke/MORTALITY/observational
studies/prevention/RISK/risk factor/stroke/stroke prevention/transient/transient
ischaemic attacks/TREAT/treatment/TRIALS
De Henauw, S., De Bacquer, D., Fonteyne, W., Stam, M., Kornitzer, M. and De Backer,
G. (1998), Trends in the prevalence, detection, treatment and control of arterial
hypertension in the Belgian adult population. Journal of Hypertension, 16 (3),
277-284.
Abstract: Objectives To discuss changes during the past decades in the prevalence and in
the patterns of detection, treatment and control of arterial hypertension in the
general Belgian population aged 25-64 years. Design Data from two cross-
sectional cardiovascular disease risk factor surveys of the general population
aged 25-64 years during the first and second halves of the 1980s (the Belgian
Inter-university Research on Nutrition and Health study of 1980-1984 and the
World Health Organization Multinational Monitoring of Trends and
Determinants in Cardiovascular Diseases study of 1985-1992) are compared.
Participants Age-stratified and sex-stratified random samples from the general
population yielded 9372 participants in the former study and 4904 participants in
the latter. Methods In both studies, blood pressure measurements and other
variables were collected in the same standardized way and by the same observers.
Results For both sexes, overall age- standardized prevalences of hypertension
(subjects with systolic blood pressure greater than or equal to 160 mmHg or
diastolic blood pressure greater than or equal to 95 mmHg or currently being
administered antihypertensive drug treatment) were found to be (P 160 mmHg with DBP 60 years of age. Despite these
findings, however, recent analysis suggests that most hypertension treatment
decisions continue to be based on DBP measurements instead of SBP. To combat
this treatment gap, we must disseminate this information and motivate physicians
and other providers to include reduction of SBP in their treatment plans. We
must also encourage the development of antihypertensive drugs that lower SBP
more effectively than those that are currently available. J Hypertens 17 (suppl
5):S49-S54 (C) 1999 Lippincott Williams & Wilkins
Keywords: age/antihypertensive drugs/blood
pressure/BLOOD-PRESSURE/cardiovascular/cardiovascular
disease/cardiovascular disease risk factors/clinical
trials/community/development/diabetes/diabetes mellitus/diastolic blood
pressure/DISEASE/diuretic-based
antihypertensives/drugs/elderly/FRAMINGHAM/guidelines/heart/heart
failure/HEART-FAILURE/history/hypertension/incidence/infarction/isolated
systolic hypertension/morbidity/mortality/myocardial/myocardial
infarction/NIDDM/PLACEBO/PREVENTION/RISK/SHEP/stroke/treatment/tria
l/trials/UNITED-STATES
Edwards, R., Unwin, N., Mugusi, F., Whiting, D., Rashid, S., Kissima, J., Aspray, T.J.
and Alberti, K.G.M.M. (2000), Hypertension prevalence and care in an urban
and rural area of Tanzania. Journal of Hypertension, 18 (2), 145-152.
Abstract: Objective To describe the prevalence, detection, treatment and control of
hypertension in an urban and rural area of Tanzania. Design Two linked
cross-sectional population-based surveys. Setting A middle-income urban district
of Dar es Salaam (Ilala) and a village in the relatively prosperous rural area of
Kilimanjaro (Shari). Participants Seven hundred and seventy adults (>15 years)
in Ilala and 928 adults in Shari were studied. Results Hypertension prevalence
(blood pressure greater than or equal to 140 and/or 90 mmHg, or known
hypertensives receiving antihypertensive treatment) was 30% (95% confidence
interval, 25.1-34.9%) in men and 28.6% (24.3- 32.9%) in women in Ilala, and
32.2% (27.7-36.7%) in men and 31.5% (27.8-35.2%) in women in Shari.
Age-standardized hypertension (to the New World Population) prevalence was
37.3% (32.2-42.5%) among men and 39.1% (34.2-44.0%) in women in Ilala, and
26.3% (22.4-30.4%) in men and 27.4% (24.4-30.4%) in women in Shari. In both
areas, just under 20% of hypertensive subjects were aware of their diagnosis,
approximately 10% reported receiving treatment and less than 1% were
controlled (blood pressure 6.5 mmol/l (n = 986), the risk of
death increased progressively with systolic blood pressure, whereas among
non-smoking normocholesterolaemic men (n = 504) the association was J-shaped,
i.e. higher mortality at less than or equal to 110 mmHg than between 111- 150
mmHg and a more consistent rise from 151-160 mmHg, The curves were
essentially similar for cardiovascular mortality. The results were supported by
analyses where major cardiovascular risk factors were controlled. Conclusion
During a truly long-term follow-up, the relationship between systolic blood
pressure and mortality was initially flat up to 131-140 mmHg although a linear
relationship is suggested in men with other cardiovascular risk factors, (C) 2001
Lippincott Williams & Wilkins
Keywords: age/blood pressure/body mass index/cancer/cardiovascular/cardiovascular
disease/cardiovascular disease risk factors/cardiovascular diseases/cardiovascular
mortality/cardiovascular risk/cardiovascular risk factors/CARDIOVASCULAR-
DISEASES/cholesterol/COHORTS/coronary heart
disease/CORONARY-HEART-DISEASE/death/disease/disease
risk/diseases/FINLAND/health/heart/heart
disease/HYPERTENSION/J-curve/MANAGEMENT/men/MIDDLE-AGED
MEN/mortality/PREVENTION/REGISTER/risk/risk factor/risk
factors/serum/smoking/stroke/systolic blood/systolic blood pressure/VALIDITY
Larosa, J.C. (2002), Use of statin drugs in women. Journal of Hypertension, 20
S70-S72.
Abstract: Risk factors associated with the progression of coronary disease are the same
in women and men, although there are some quantitative differences. Diabetic
women, for example, are exquisitely sensitive to the development of
atherosclerosis. There is no clinical trial devoted to the study of cholesterol
lowering in women. A meta-analysis of recent statin trials with clinical endpoints,
however, demonstrates that cholesterol lowering is as beneficial in women as it is
in men. Hormone replacement therapy has not been demonstrated in a clinical
trial to be of benefit even though there is considerable observational,
epidemiology and basic science evidence that indicates that it might be. It is
important that the risk of coronary disease and stroke, particularly in older
women, be recognized. Patients at risk should receive cholesterol- lowering
treatment with statin drugs to prevent both atherosclerotic morbidity and
mortality. (C) 2002 Lippincott Williams Wilkins
Keywords:
ATHEROSCLEROSIS/atherosclerosis/cholesterol/cholesterol-lowering/clinical
trial/coronary artery disease/coronary disease/CORONARY
HEART-DISEASE/development/disease/drugs/epidemiology/ESTROGEN
REPLACEMENT/HYPERTENSION/men/meta-analysis/METAANALYSIS/mo
rbidity/morbidity and
mortality/mortality/MYOCARDIAL-INFARCTION/POSTMENOPAUSAL
WOMEN/PREVENTION/PROGRESSION/risk/RISK-FACTORS/statin/statins/
stroke/therapy/treatment/trial/trials/women/YOUNG-ADULTS
West, M.J., White, H.D., Simes, R.J., Kirby, A., Watson, J.D., Anderson, N.E., Hankey,
G.J., Wonders, S., Hunt, D. and Tonkin, A.M. (2002), Risk factors for
non-haemorrhagic stroke in patients with coronary heart disease and the effect of
lipid-modifying therapy with pravastatin. Journal of Hypertension, 20 (12),
2513-2517.
Abstract: Objective To determine the relative importance of recognised risk factors for
non-haemorrhagic stroke, including serum cholesterol and the effect of
cholesterol-lowering therapy, on the occurrence of non-haemorrhagic stroke in
patients enrolled in the LIPID (Long-term Intervention with Pravastatin in
Ischaemic Disease) study. Design The LIPID study was a placebo- controlled,
double-blind trial of the efficacy on coronary heart disease mortality of
pravastatin therapy over 6 years in 9014 patients with previous acute coronary
syndromes and baseline total cholesterol of 4-7 mmol/l. Following identification
of patients who had suffered non-haemorrhagic stroke, a pre-specified secondary
end point, multivariate Cox regression was used to determine risk in the total
population. Time-to-event analysis was used to determine the effect of
pravastatin therapy on the rate of non-haemorrhagic stroke. Results There were
388 non-haemorrhagic strokes in 350 patients. Factors conferring risk of future
non-haemorrhagic stroke were age, atrial fibrillation, prior stroke, diabetes,
hypertension, systolic blood pressure, cigarette smoking, body mass index, male
sex and creatinine clearance. Baseline lipids did not predict non-haemorrhagic
stroke. Treatment with pravastatin reduced non-haemorrhagic stroke by 23% (P=
0.016) when considered alone, and 21% (P= 0.024) after adjustment for other
risk factors. Conclusions The study confirmed the variety of risk factors for
non-haemorrhagic stroke. From the risk predictors, a simple prognostic index
was created for nonhaemorrhagic stroke to identify a group of patients at high
risk. Treatment with pravastatin resulted in significant additional benefit after
allowance for risk factors. (C) 2002 Lippincott Williams Wilkins
Keywords: acute/acute coronary syndromes/age/atrial/atrial fibrillation/Australia/blood
pressure/body mass index/CARE/cholesterol/CHOLESTEROL
LEVELS/cholesterol-lowering/cigarette smoking/coronary heart
disease/diabetes/disease/disease mortality/EVENTS/fibrillation/heart/heart
disease/high
risk/HYPERTENSION/LIPID/lipids/MEN/mortality/non-haemorrhagic
stroke/population/pravastatin/predictors/PRIMARY
PREVENTION/PROJECT/REDUCTION/risk/risk
factors/secondary/serum/sex/smoking/stroke/systolic blood/systolic blood
pressure/therapy/transient ischaemic attack/trial/TRIALS/USA
Bastuji-Garin, S., Deverly, A., Moyse, D., Castaigne, A., Mancia, G., de Leeuw, P.W.,
Ruilope, L.M., Rosenthal, T. and Chatellier, G. (2002), The Framingham
prediction rule is not valid in a European population of treated hypertensive
patients. Journal of Hypertension, 20 (10), 1973-1980.
Abstract: Background Stratification of population groups according to cardiovascular
risk level is recommended for primary prevention. Objective To assess whether
the Framingham models could accurately predict the absolute risk of coronary
heart disease (CHD) and stroke in a large cohort of middle-aged European
patients with hypertension, and rank individual patients according to actual risk.
Design A prospective cohort study comparing the actual risk with that predicted
by either the Framingham equations or models derived from the INSIGHT study.
Patients and setting From the INSIGHT prospective trial, conducted in eight
countries of Western Europe and Israel, we selected 4407 European patients
younger than 75 years without previous cardiovascular events. Interventions
None. Main outcome measures Major cardiovascular events. Results In this
population (45% men, mean age 64.1 years), 124 (2.8%) patients had CHD and
96 (2.2%) had strokes after a median follow-up of 3.7 years. Overestimation of
absolute CHD risk by the Framingham equation was observed in all countries
(from 2% in the UK to 7% in France), whereas predicted risk of stroke was close
to the actual risk. However, patients in the highest risk quintile within each
country had a threefold greater risk of a cardiovascular event than those in the
lowest quintile. Conclusions The Framingham models should not be used to
predict absolute CHD risk in the European population as a whole. However,
these models may be used within each country, provided that cut-off points
defining high-risk patients have been determined within each country. J
Hypertens 20:1973-1980 (C) 2002 Lippincott Williams Wilkins
Keywords: 7 COUNTRIES/absolute
risk/age/CARDIOLOGY/cardiovascular/cardiovascular event/cardiovascular
events/CARDIOVASCULAR RISK/CHD/cohort study/coronary heart
disease/CORONARY-HEART-DISEASE/disease/Europe/European
cohort/Framingham equation/GLOBAL BURDEN/heart/heart disease/high
risk/HYPERTENSION/INTERNATIONAL NIFEDIPINE
GITS/INTERVENTION/Israel/men/MORTALITY/outcome/population/predicti
on/PREVENTION/primary/primary prevention/prospective cohort study/risk/risk
factors/risk prediction/stroke/TREATMENT INSIGHT/trial/Western Europe
de Simone, G., Palmieri, V., Bella, J.N., Celentano, A., Hong, Y.L., Oberman, A.,
Kitzman, D.W., Hopkins, P.N., Arnett, D.K. and Devereux, R.B. (2002),
Association of left ventricular hypertrophy with metabolic risk factors: the
HyperGEN study. Journal of Hypertension, 20 (2), 323-331.
Abstract: Objective To determine whether combinations of metabolic risk factors
(obesity, diabetes and hypercholesterolemia) influence the magnitude of left
ventricular (LV) mass and prevalence of LV hypertrophy. Design
Cross-sectional, relational. Methods A total of 1627 hypertensive (85.9% treated,
1036 women, 1041 African Americans) and 342 normotensive (180 women, 183
African Americans) participants in the Hypertension Genetic Epidemiology
Network (HyperGEN) Study, without prevalent cardiovascular disease, were
studied. Echocardiographic LV mass, normalized by height(2.7) or fat-free mass
or body surface area (BSA) and the ratio of stroke volume to pulse pressure as a
percentage of predicted (as a crude estimate of arterial compliance) were
analyzed in relation to obesity [by body mass index (BMI)], central fat
distribution (by waist circumference), diabetes (by ADA criteria) and
hypercholesterolemia. Results Obesity, hypercholesterolemia, and diabetes were
more frequent among hypertensives than normotensives (all P R and R --> T conversion were 0.04 s(-1) and 1.0 s(-1), respectively. The
clearly rate-limiting T --> R conversion renders the R state a minor form of
DnaK that cannot account for the chaperone effects. Because DnaK in the
absence of the co-chaperones is chaperone-ineffective, the T state has also to be
excluded. Apparently, the slow, ATP-driven conformational change T --> R is
the key step in the DnaK/DnaJ/GrpE chaperone cycle underlying the chaperone
effects such as the prevention of protein aggregation, disentangling of
polypeptide chains and, in the case of eukaryotic Hsp70 homologs, protein
translocation through membranes or uncoating of clathrin-coated vesicles. (C)
1997 Academic Press Limited
Keywords: aggregation/ATPASE DOMAIN/CLATHRIN/DnaJ/DnaK/DNAK
CHAPERONE/ENGLAND/ESCHERICHIA-COLI/GRPE/GrpE/HEAT-SHOCK
PROTEINS/HSP70/HYDROLYSIS/KINETICS/mechanism of action/molecular
chaperones/PEPTIDE BINDING/prevention/stroke
Zimmermann, R., Kastens, J., Linz, W., Wiemer, G., Scholkens, B.A. and Schaper, J.
(1999), Effect of long-term ACE inhibition on myocardial tissue in hypertensive
stroke-prone rats. Journal of Molecular and Cellular Cardiology, 31 (8),
1447-1456.
Abstract: The aim of the study was to investigate the influence of long- term ACE
inhibition with ramipril on myocardial hypertrophy and its molecular background
in spontaneously hypertensive stroke- prone rats (SHR-SP). Therefore,
1-month-old pre-hypertensive SHR-SP were randomized into three groups and
exposed lifelong via drinking water to 1 mg/kg/day ramipril (anti-hypertensive
dose, RHI), 10 mu g/kg/day ramipril (non anti-hypertensive dose, RLO) or
placebo. After 15 months cardiac tissue was collected from ten rats each for
immunohistochemistry and Northern blot analysis of structural proteins. proteins
of the extracellular matrix and several growth factors. Results showed that RHI,
but not RLO, treatment prevented development of myocyte hypertrophy (ANP).
Furthermore, unlike placebo-treated rats, the ramipril-treated animals had no
evidence of degeneration and loss of structural proteins (alpha-actinin),
inflammatory infiltrates (CD45) and deposition of extracellular matrix proteins
(collagen, fibronectin, vimentin). Only in RHI- treated animals, mRNA levels for
TGF-beta(1) as well as of collagen alpha(1)(I) and fibronectin were
downregulated compared to placebo-treated animals. In contrast, VEGF mRNA
levels increased significantly in both groups of ramipril- treated animals v.
placebo-treated SHR-SP. Thus, the reported life prolonging effect of high doses
of ramipril which is associated with prevention of hypertension and hypertrophy
is accompanied by prevention of the development of necrosis and fibrosis. The
role of VEGF, however, seems to be independent of this effect. (C) 1999
Academic Press
Keywords: ACE inhibitors/ANGIOTENSIN-II/collagen/development/ENDOTHELIAL
GROWTH-FACTOR/ENGLAND/EXTRACELLULAR-MATRIX/fibrosis/gene
expression/GENE-EXPRESSION/hypertension/hypertrophy/LEFT-
VENTRICULAR
HYPERTROPHY/LIFE-SPAN/MESSENGER-RNA/myocardial/necrosis/NITRI
C-OXIDE/prevention/randomized/rats/SHRSP/stroke/stroke-prone
rats/TRANSFORMING GROWTH-FACTOR-
BETA-1/treatment/VASCULAR-PERMEABILITY FACTOR/VEGF
Yang, C.C., Tsai, W.J., Chuo, H.T., Shiau, F.S. and Deng, J.F. (1995), Mushroom
Poisoning in Taiwan. Journal of Natural Toxins, 4 (2), 185-194.
Abstract: Mushroom gathering is not uncommon in Taiwan; however, incidence of
poisoning following mushroom ingestion has not been reported. We have been
recently acquainted with several incidents of mushroom poisoning and wish to
clarify the exact incidence of mushroom poisoning in Taiwan. We therefore
conducted a review study to analyze the data of all suspected mushroom
poisonings reported to the PCC-Taiwan from July 1986 through December 1993.
During that time period, totally 39 cases, belonging to 17 incidents, of suspected
mushroom poisoning were recorded. All cases, except two cases with unrelated
diagnosis of carbamate poisoning and stroke, and two cases with inadequate
clinical data, were included in this study. The diagnosis of mushroom poisoning
in the other 14 incidents were confirmed either by identification of the poisonous
mushrooms or by the clear causal link between presentation of symptoms and
consumption of mushrooms. Of the 35 cases of defined mushroom poisoning, all
presented with GI symptoms as their earliest manifestation, with incubation
period ranging from 30 minutes to 6 hours. Diarrhea was the most common GI
symptom (80%), followed by vomiting (74.3%), abdominal pain (62.9%), and
nausea (45.7%). Other symptoms being less recorded were dizziness, fever,
chilliness, hypotension, unconsciousness, weakness, cold sweating, abdominal
fullness, drowsiness, hallucination, etc. Eight out of the 14 incidents of
mushroom poisoning occurred in the summer, while the other 6 incidents
occurred in the spring (4) or in the fall (2). According to the limited data
obtained in this study, mushroom poisoning is not common in Taiwan and most
cases were manifested with GI symptoms only. Treatment is mainly supportive
and the outcome is good, with no deaths being reported. As most cases are
poisoned following consumption of wild mushrooms, careful discrimination and
ingestion of wild mushrooms are mandatory in further prevention of mushroom
poisoning in Taiwan
Keywords: diagnosis/incidence/prevention/stroke/THERAPY/TOXIN
Schmidt, R., Roob, G., Kapeller, P., Schmidt, H., Berghold, A., Lechner, A. and Fazekas,
F. (2000), Longitudinal change of white matter abnormalities. Journal of Neural
Transmission-Supplement, (59), 9-14.
Abstract: A three year follow-up of 273 participants (mean age 60+/-6.1 years) of the
Austrian Stroke Prevention Study provides first information on the rate, clinical
predictors, and cognitive consequences of MRI white matter hyperintensity in
elderly individuals without neuropsychiatric disease. Lesion progression was
found in a total of 49 (17.9%) individuals. It was minor in 27 (9.9%) and marked
in 22 (8.1%) participants. Diastolic blood pressure (odds ratio 1.07/mmHg) and
early confluent or confluent white matter hyperintensities at baseline (odds ratio
2.62) were the only significant predictors of white matter hyperintensity
progression. Lesion progression had no influence on the course of
neuropsychologic test performance over the observational period
Keywords: age/Austria/AUSTRIAN STROKE PREVENTION/blood
pressure/elderly/FOLLOW-UP/HYPERINTENSITIES/MRI/NEW-YORK/predi
ctors/white matter
Schmidt, H., Fazekas, F., Kostner, G.M. and Schmidt, R. (2000), Genetic aspects of
microangiopathy-related cerebral damage. Journal of Neural
Transmission-Supplement, (59), 15-21.
Abstract: Microangiopathy related cerebral damage (MARCD) includes early confluent
and confluent white matter hyperintensities (WMH) and lacunar lesions. It is
expected to be the result of interactions between multiple genetic and
environmental factors. The estimated proportion of genetic factors contributing
to the interindividual variation seen in WMH volume is 73%. This estimate
points to a significant genetic component in WMH development. In the setting of
the Austrian Stroke Prevention Study we search for genes being associated with
the presence, severity and progression of MARCD using the candidate gene
approach. Defining susceptibility genes may allow to better identify individuals
at high risk for MARCD and to target preventive measures
Keywords: ABNORMALITIES/APOLIPOPROTEIN-E/Austria/AUSTRIAN STROKE
PREVENTION/cerebral/CHOLESTEROL
TRANSPORT/development/DISEASE/gene/genes/genetic/high
risk/HYPERINTENSITIES/MR/NEW-YORK/risk/RISK-FACTORS/severity/T
RAITS/white matter/WHITE-MATTER LESIONS
Schmidt, R., Fazekas, F., Enzinger, C., Ropele, S., Kapeller, P. and Schmidt, H. (2002),
Risk factors and progression of small vessel disease-related cerebral
abnormalities. Journal of Neural Transmission-Supplement, (62), 47-52.
Abstract: A three year follow-up of 273 participants (mean age 60 years) of the Austrian
Stroke Prevention Study provides first information on the rate and clinical
predictors of progression of small vessel disease related cerebral abnormalities
including white matter changes and lacunes. White matter hyperintensity
progression was found in 17.9% of individuals over the 3 year period. New
lacunes occurred in 2.2% of subjects. The overall frequency of progression of
small vessel disease related brain changes was 19%. Diastolic blood pressure and
early confluent or confluent white matter hyperintensities at baseline predicted
lesion progression. Genetic association studies in the setting of the Austrian
Stroke Prevention Study described that polymorphisms in the renin angiotensin
system (RAS) increase the susceptibility for progression of cerebral small vessel
disease. Homozygosity for the T allele of the M235T polymorphism of the
angiotensinogen gene was associated with a 3.19-fold increased risk for lesion
progression independently of arterial hypertension. These data suggest that drugs
influencing the RAS system may allow to intervene with an unfavorable course
of cerebral small vessel disease
Keywords: age/angiotensin/angiotensinogen/arterial/arterial hypertension/Austria/blood
pressure/brain/cerebral/disease/drugs/gene/hypertension/NEW-YORK/POLYM
ORPHISM/predictors/renin angiotensin system/risk/small vessel
disease/STROKE/white matter
Erkinjuntti, T. (2002), Diagnosis and management of vascular cognitive impairment and
dementia. Journal of Neural Transmission-Supplement, (63), 91-109.
Abstract: Vascular dementias (VaDs) are the second most common cause of dementia.
Cerebrovascular disease (CVD) and stroke relates to high risk of cognitive
impairment, but also relate to Alzheimer's disease (AD): Vascular cognitive
impairment (VCI) and dementias extend beyond the traditional multi-infarct
dementia. Pathophysiology of VaD incorporates interactions between vascular
etiologies (CVD and vascular risk-factors), changes in the brain (infarcts, white
matter lesions, atrophy), host factors (age, education) and cognition. Variation in
defining the cognitive syndrome, in vascular etiologies, and allowable brain
changes in current criteria have resulted in variable estimates of prevalence, of
groups of subjects, and of the types and distribution of putative causal brain
lesions. Should new criteria be developed? Ideally in constructing new criteria
the diagnostic elements should be tested with prospective studies with
clinical-pathological correlation: replace dogma with data. Meanwhile focus on
more homogenous subtypes of VaD, and on imaging criteria could be a solution.
Subcortical ischemic vascular disease and dementia (SIVD) incorporate small
vessel disease as the chief vascular etiology, lacunar infarct and ischaemic white
matter lesions as primary type of brain lesions, subcortical location as the
primary location of lesions, and subcortical syndrome as the primary clinical
manifestation. It incorporates two clinical entities "Binswanger's disease" and
"the lacunar state". AD with VaD (mixed dementia) has been underestimated as a
prevalent cause in the older population. In addition to simple co-existence, VaD
and AD have closer interaction: several vascular risk factors and vascular brain
changes relate to clinical manifestation of AD, and they share also common
pathogenetic mechanisms. Vascular cognitive impairment (VCI) is a category
aiming to replace the "Alzhemerized" dementia concept in the setting of CVD,
and substitute it with a spectrum that includes subtle cognitive deficits of
vascular origin, poststroke dementia, and the complex group of the vascular
dementias. As far there is no standard treatment for VaDs, and still little is
known on the primary prevention (brain at risk for CVD) and secondary
prevention (CVD brain at risk for VCI/VaD). There is no standard symptomatic
treatment for VaD. Recently symptomatic cholinergic treatment has shown
promise in AD with VaD, as well as probable VaD. Future focus should be
directed to the distinct etiological and pathological factors: the vascular and the
AD burden of the brain
Keywords: AD/age/Alzheimer's
disease/ALZHEIMERS-DISEASE/brain/CLINICAL-DIAGNOSIS/cognition/co
gnitive impairment/dementia/diagnostic/disease/education/etiology/Finland/high
risk/HOSPITALIZED COHORT/interaction/ischaemic/ischemic/LONG-TERM
SURVIVAL/MAJOR SUBTYPES/management/mechanisms/mixed
dementia/MULTI-INFARCT DEMENTIA/MULTIINFARCT
DEMENTIA/NEW-YORK/NINDS-AIREN/population/POPULATION-BASED
COHORTS/prevalence/prevention/primary/primary prevention/prospective
studies/risk/risk factors/RISK-FACTORS/secondary/secondary prevention/small
vessel disease/stroke/treatment/vascular/vascular cognitive impairment/vascular
disease/vascular risk/vascular risk factors/white matter/white matter lesions
Schmidt, H., Fazekas, F. and Schmidt, R. (2002), Microangiopathy-related cerebral
damage and angiotensinogen gene: from epidemiology to biology. Journal of
Neural Transmission-Supplement, (62), 53-59.
Abstract: Microangiopathy-related cerebral damage (MARCD) is a common finding in
the elderly. It may lead to cognitive impairment and gait disturbances. Arterial
hypertension and age are the best accepted risk factors for MARCD. Genes
involved in blood pressure regulation, like genes encoding the proteins of the
renin-angiotensin system (RAS) therefore represents good candidate genes for
MARCD. Plasma angiotensinogen level is a major determinant of the RAS
activity. Positive correlation between angiotensinogen gene expression and RAS
activity, as well as blood pressure were observed. Common mutations described
in the AGT promoter were able to alter AGT expression in cell culture. We
described that 4 frequent mutations at the AGT promoter are combined in 5
haplotypes coded as A (-6:g, - 20:a, -152:g, -217:g), B (-6:a, -20:c, -152:g,
-217:g), C (- 6:a, -20:c, -152:a, -217:g), D (-6:a, -20:a, -152:g, -217:g), and E
(-6:a, -20:a, -152:g, -217:a). The B haplotype was significantly associated with
MARCD in the cohort of the Austrian Stroke Prevention Study (p = 0.005). The
association was independent of hypertension, which pinpointed to a possible role
of the local RAS in this relationship. Investigation of the promoter activity of the
AGT gene in astrocytes suggests that expression of this gene may be modulated
by the haplotype
Keywords: age/angiotensinogen/AORTIC SMOOTH-MUSCLE/AT(1)
RECEPTOR/Austria/AUSTRIAN STROKE PREVENTION/blood
pressure/cerebral/cognitive
impairment/culture/elderly/epidemiology/EXPRESSION/gene/gene
expression/genes/HYPERTENSION/NEW-YORK/PROMOTER/PROTEIN-KI
NASE/renin angiotensin system/renin-angiotensin system/risk/risk factors/TATA
BOX/TRANSCRIPTION INITIATION SITE/WHITE MATTER LESIONS
van Dijk, E.J., Prins, N.D., Vermeer, S.E., Koudstaal, P.J. and Breteler, M.M.B. (2002),
Frequency of white matter lesions and silent lacunar infarcts. Journal of Neural
Transmission-Supplement, (62), 25-39.
Abstract: White matter lesions and silent lacunar infarcts are related to and may result
from cerebral small vessel disease. Reported frequencies of these lesions vary
largely among studies. Differences in imaging techniques, rating scales, cut-off
points in lesion severity grading and study populations contribute to the variation,
in addition to differences in risk factor profiles across studies. In this paper, we
will firstly discuss general methodological issues that may influence reported
frequencies of white matter lesions and silent lacunar infarctions, and then
review published data. We will focus on the results from population-based
studies and only briefly comment on patient series of stroke and dementia
Keywords: ALZHEIMERS-DISEASE/ANATOMIC
CHARACTERISTICS/AUSTRIAN STROKE
PREVENTION/CARDIOVASCULAR
HEALTH/cerebral/dementia/DIAGNOSTIC-CRITERIA/disease/ELDERLY
PEOPLE/Netherlands/NEW-YORK/population-based/review/risk/risk
factor/severity/SIGNAL HYPERINTENSITIES/small vessel
disease/stroke/TRANSIENT ISCHEMIC ATTACK/VASCULAR
RISK-FACTORS/VISUAL RATING-SCALES/white matter/white matter
lesions
Guo, Z.H., Lee, J., Lane, M. and Mattson, M.P. (2001), Iodoacetate protects
hippocampal neurons against excitotoxic and oxidative injury: involvement of
heat-shock proteins and Bcl-2. Journal of Neurochemistry, 79 (2), 361-370.
Abstract: Mild metabolic stress may increase resistance of neurons in the brain to
subsequent, more severe insults, as demonstrated by the ability of ischemic
pre-conditioning and dietary restriction to protect neurons in experimental
models of stroke- and age-related neurodegenerative disorders. In the present
study we employed iodoacetic acid (IAA), an inhibitor of
glyceraldehyde-3-phosphate dehydrogenase, to test the hypothesis that inhibition
of glycolysis can protect neurons. Pre-treatment of cultured hippocampal neurons
with IAA can protect them against cell death induced by glutamate, iron and
trophic factor withdrawal. Surprisingly, protection occurred with concentrations
of IAA (2-200 nm) much lower than those required to inhibit glycolysis.
Pre-treatment with IAA results in suppression of oxyradical production and
stabilization of mitochondrial function in neurons after exposure to oxidative
insults. Levels of the stress heat-shock proteins HSP70 and HSP90, and of the
anti-apoptotic protein Bcl-2, were increased in neurons exposed to IAA. Our data
demonstrate that IAA can stimulate cytoprotective mechanisms within neurons,
and suggest the possible use of IAA and related compounds in the prevention
and/or treatment of neurodegenerative conditions
Keywords: AMYLOID BETA-PEPTIDE/apoptosis/brain/CALCIUM
HOMEOSTASIS/cerebral ischemia/death/DIETARY
RESTRICTION/ENGLAND/experimental/glutamate/heat-shock proteins 70 and
90/HSP70/ischemic/LIPID-PEROXIDATION/MANGANESE
SUPEROXIDE-DISMUTASE/membrane lipid
peroxidation/MITOCHONDRIAL DYSFUNCTION/mitochondrial
transmembrane potential/neurons/PARKINSONS-
DISEASE/PEROXYNITRITE
PRODUCTION/prevention/protection/stress/stroke/TRANSIENT FOREBRAIN
ISCHEMIA/treatment/TROPHIC FACTOR WITHDRAWAL/use
MacGregor, D.G., Avshalumov, M.V. and Rice, M.E. (2003), Brain edema induced by
in vitro ischemia: causal factors and neuroprotection. Journal of Neurochemistry,
85 (6), 1402-1411.
Abstract: Decreased cerebral blood flow, hence decreased oxygen and glucose, leads to
ischemic brain injury via complex pathophysiological events, including
excitotoxicity, mitochondrial dysfunction, increased intracellular Ca2+ , and
reactive oxygen species (ROS) generation. Each of these could also contribute to
cerebral edema, which is the primary cause of patient mortality after stroke. In
vitro brain slices are widely used to study ischemia. Here we introduce a slice
model to investigate ischemia-induced edema. Significant water gain was
induced in coronal slices of rat brain by 5 min of oxygen and glucose deprivation
(OGD) at 35degreesC, with progressive edema formation after return to
normoxic, normoglycemic medium. Edema increased with increasing injury
severity, determined by OGD duration (5-30 min). Underlying factors were
assessed using glutamate-receptor antagonists (AP5/CNQX), blockade of
mitochondrial permeability transition [cyclosporin A (CsA) versus FK506],
inhibition of Na+ /Ca2+ exchange (KB-R7943), and ROS scavengers (ascorbate,
Trolox((R)) , dimethylthiourea, Tempol((R)) ). All agents except KB-R7943 and
FK506 significantly attenuated edema when applied after OGD; KB-R7943 was
effective when applied before OGD. Significantly, complete prevention of
ischemia-induced edema was achieved with a cocktail of AP5/CNQX, CsA and
Tempol((R)) applied after OGD, which demonstrates the involvement of
multiple, additive mechanisms. The efficacy of this cocktail further shows the
potential value of combination therapies for the treatment of cerebral ischemia
Keywords: blood flow/brain/brain injury/brain slices/Ca2+/CEREBELLAR GRANULE
CELLS/cerebral/cerebral blood flow/cerebral edema/cerebral
ischemia/combination/CORTICAL
SLICES/CYCLOSPORINE-A/ENGLAND/excitotoxicity/formation/glucose/GL
UTAMATE NEUROTOXICITY/HYPOXIC/HYPOGLYCEMIC
INJURY/INTRACELLULAR
CALCIUM/ischemia/ischemic/mechanisms/mitochondria/MITOCHONDRIAL
PERMEABILITY TRANSITION/mortality/NA+/CA2+
EXCHANGE/neuroprotection/oxidative stress/OXYGEN-GLUCOSE
DEPRIVATION/prevention/primary/rat/RAT HIPPOCAMPAL
SLICES/severity/stroke/treatment/USA
Koponen, S., Kurkinen, K., Akerman, K.E.O., Mochly-Rosen, D., Chan, P.H. and
Koistinaho, J. (2003), Prevention of NMDA-induced death of cortical neurons by
inhibition of protein kinase C zeta. Journal of Neurochemistry, 86 (2), 442-450.
Abstract: Excitotoxicity through stimulation of N -methyl-d-aspartate (NMDA)
receptors contributes to neuronal death in brain injuries, including stroke. Several
lines of evidence suggest a role for protein kinase C (PKC) isoforms in NMDA
excitotoxicity. We have used specific peptide inhibitors of classical PKCs (alpha,
beta, and gamma), novel PKCs delta and epsilon, and an atypical PKCzeta in
order to delineate which subspecies are involved in NMDA-induced cell death.
Neuronal cell cultures were prepared from 15-day-old mouse embryos and plated
onto the astrocytic monolayer. After 2 weeks in vitro the neurons were exposed
to 100 mum NMDA for 5 min, and 24 h later the cell viability was examined by
measuring the lactate dehydrogenase release and bis-benzimide staining. While
inhibitors directed to classical (alpha, beta, and gamma) or novel PKCs (delta or
epsilon) had no effect, the PKCzeta inhibitor completely prevented the
NMDA-induced necrotic neuronal death. Confocal microscopy confirmed that
NMDA induced PKCzeta translocation, which was blocked by the PKCzeta
inhibitor. The NMDA-induced changes in intracellular free Ca2+ were not
affected by the peptides. In situ hybridization experiments demonstrated that
PKCzeta mRNA is induced in the cortex after focal brain ischemia. Altogether,
the results indicate that PKCzeta activation is a downstream signal in
NMDA-induced death of cortical neurons
Keywords: activation/brain/brain ischemia/CEREBELLAR GRANULE
CELLS/CEREBRAL-ARTERY OCCLUSION/changes/cortical
neurons/death/DELTA-PKC/ENGLAND/excitotoxicity/Finland/focal/INDUCE
D APOPTOSIS/inhibitor
peptide/ISCHEMIA/ischemia/METHYL-D-ASPARTATE/neurons/NF-KAPPA-
B/NMDA/protein kinase C/PROTEOLYTIC
ACTIVATION/RAT-BRAIN/receptors/results/SPREADING
DEPRESSION/stimulation/stroke
Callahan, A.S. and Berger, B.L. (1997), Balloon angioplasty of intracranial arteries for
stroke prevention. Journal of Neuroimaging, 7 (4), 232-235.
Abstract: Stroke from surgically inaccessible intracranial atherostenosis remains a
formidable clinical challenge. While antithrombotic or antiplatelet therapy may
prevent distal embolism, there is no effective program for plaque stabilization
preventing progression of atherosclerotic stenosis. In patients with isolated
circulations (single vertebral with absent posterior communicating arteries, single
carotid with contralateral internal carotid artery occlusion, or single carotid with
an absent anterior communicating artery), occlusion of the stenotic vessel may
produce a low flow-mediated stroke. Fifteen patients with atherosclerotic
intracranial stenoses were treated by balloon angioplasty after medical therapy
with warfarin failed. Treated territories included the distal internal carotid,
proximal middle cerebral, distal vertebral, and basilar arteries. Dilation was
successful in all vessels, with residual stenoses averaging less than 30%. Two
complications included one paramedian pontine stroke and a single vessel
rupture that proved fatal. There was no recurrence of transient ischemic attacks
and no restenosis at the angioplasty site over a follow-up period of more than 24
months. In this small series, balloon angioplasty of intracranial vessels provided
a therapeutic option for secondary stroke prevention in highly selected patients.
Further studies will be necessary to establish the efficacy and safety of
endovascular treatment in larger series
Keywords: angioplasty/antiplatelet therapy/balloon angioplasty/carotid/carotid
artery/cerebral/complications/embolism/ischemic/plaque/prevention/recurrence/s
afety/stroke/stroke prevention/therapy/transient/treatment/warfarin
Boyajian, R.A. and Otis, S.M. (2002), Integration and added value of the modern
noninvasive vascular laboratory in vascular diseases management. Journal of
Neuroimaging, 12 (2), 148-152.
Abstract: Background and Purpose. Today's vascular laboratory technology offers broad
applications throughout vascular medicine. We explore the diagnostic work-up
and management of selected peripheral vascular diseases by benchmarking the
institutional mix of invasive and noninvasive technology utilization and
associated cost burdens. Methods. Specialized diagnostic studies for prevention
of stroke and pulmonary embolism, and diagnosis and management of femoral
pseudoaneurysm were reviewed for our 355-physician clinic and hospital
practice. The proportions and costs for invasive and noninvasive diagnostic
procedures were tabulated for carotid stenosis, deep venous thrombosis (DVT),
and iatrogenic femoral pseudoaneurysm. Current technology utilization mix cost
burdens were compared to projected cost burdens for hypothetical equivalent
medical value (ie, the same total test volume) in the theoretical absence of
noninvasive laboratory services. Results, The technology utilization mix was
dominated by noninvasive duplex ultrasonography for all 3 vascular disease
workups. The technology utilization mix benchmarks were 92% noninvasive for
carotid stenosis, 98% noninvasive for DVT, and 100% noninvasive for
pseudoaneurysm. Under hypothetical constant test volume normalized to
utilization level for the 2-year period, the maximal range in cost burdens between
current reliance on noninvasive diagnoses versus projected 100% reliance on
invasive procedures for the 3 vascular applications is approximately $6 million.
Conclusion. Benchmark indices reveal near total adoption of noninvasive
technology for vascular diagnostic workups at our center. The benefits to
institutions of benchmarking their technology utilization mix and costs are
discussed in relation to identifying potential for cost- containment from
modifying technology utilization practices
Keywords: benchmarking/carotid/carotid stenosis/cost/cost
control/COST-EFFECTIVENESS/costs/DEEP VENOUS
THROMBOSIS/DIAGNOSIS/diagnostic/diagnostic technology
utilization/disease/diseases/duplex/DVT/embolism/hospital/institutional/manage
ment/medical/noninvasive vascular laboratory/peripheral vascular
diseases/prevention/PSEUDOANEURYSM/pulmonary/pulmonary
embolism/PULMONARY-EMBOLISM/stenosis/stroke/thrombosis/ultrasonogra
phy/vascular/vascular disease/venous thrombosis
Felberg, R.A., Christou, L., Demchuk, A.M., Malkoff, M. and Alexandrov, A.V. (2002),
Screening for intracranial stenosis with transcranial Doppler: The accuracy of
mean flow velocity thresholds. Journal of Neuroimaging, 12 (1), 9-14.
Abstract: Background. Patients with 50% intracranial arterial stenosis may require more
intensive therapies for stroke prevention. Transcranial Doppler (TCD) is a
convenient noninvasive screen for intracranial stenosis. The accuracy of different
mean flow velocity (MFV) thresholds for determining the degree of stenosis
remains uncertain. Methods. The authors prospectively compared the accuracy of
TCD criteria and MFV thresholds to magnetic resonance, computed tomography,
and digital subtraction angiography in patients with symptoms of recent or
remote stroke or transient ischemic attack. Stenosis on angiography was
measured as 0%, 900 mg per day) doses of
aspirin in patients after a transient ischaemic attack or non-disabling stroke. The
purpose of this study was to resolve the issue. Thus a minimeta-analysis was
performed on data from 10 randomised trials of aspirin only upsilon control
treatment in 6171 patients after a transient ischaemic attack or nondisabling
stroke. The data on the trials were listed in an appendix of the report on the
second cycle of the Antiplatelet Trialists' Collaboration. There was virtually no
difference in relative risk reduction for low, medium, and high doses of aspirin
(13%, 9%, and 14% respectively). This equivalence corresponds with the results
of the UK-TIA trial in a direct comparison of 300 and 1200 mg. The Dutch TIA
trial showed no difference in efficacy of 30 and 283 mg. It is concluded that
aspirin at any dose above 30 mg daily prevents 13% (95% confidence interval
4-21) of vascular events and that there is a need for more efficacious drugs
Keywords: aspirin/BRITISH/cerebral ischaemia/CONTROLLED
TRIAL/ischaemia/ISCHEMIA/meta-analysis/relative risk/risk/SECONDARY
PREVENTION/STROKE/TIA/transient/treatment/trials/vascular
Rudd, A.G., Wolfe, C.D.A. and Howard, R.S. (1997), Prevention of neurological disease
in later life. Journal of Neurology Neurosurgery and Psychiatry, 63 S39-S52
Keywords: AGED BRITISH MEN/BLACK-WHITE
DIFFERENCES/BLOOD-PRESSURE/BRITISH/CARE/CAROTID
ENDARTERECTOMY/CEREBROVASCULAR- DISEASE/CHRONIC
ATRIAL-FIBRILLATION/COMMUNITY-STROKE-PROJECT/CORONARY
HEART-DISEASE/ENGLAND/MODERATE
ALCOHOL-CONSUMPTION/RISK-FACTORS
O'Connell, J.E., Gray, C.S., French, J.M. and Robertson, I.H. (1998), Atrial fibrillation
and cognitive function: case-control study. Journal of Neurology Neurosurgery
and Psychiatry, 65 (3), 386-389.
Abstract: Atrial fibrillation is an important and independent risk factor for
cerebrovascular disease and vascular dementia. There is increasing evidence that
atrial fibrillation is associated with an increased risk of asymptomatic or silent
cerebral infarction and as a result may confer an increased risk of progressive
cognitive impairment on a person. In this study we sought to determine whether
this hypothesis could be explored in a prospective case controlled design.
Twenty seven patients with non-valvular atrial fibrillation (NVAF) and no
history of stroke, transient ischaemic attack, dementia, and thyrotoxicosis were
compared with 54 age and sex matched controls in sinus rhythm. All cases
underwent clinical examination, ECG, and psychological assessment using a
battery of nine neuropsychological tests. Between group analysis and a
comparison of mean test scores of paired controls with cases were undertaken.
The presence of atrial fibrillation was consistently associated with poorer
performances on all the subtests of the neuropsychological battery. There was no
association between duration of atrial fibrillation and performance. These results
provide evidence to justify further examination of the hypothesis in a larger
prospective study to determine whether antithrombotic therapy may protect
against cognitive decline in patients at maximal risk of silent cerebral ischaemia
and associated cognitive decline
Keywords: age/antithrombotic therapy/atrial fibrillation/BRITISH/cerebral
infarction/cerebral ischaemia/cerebrovascular disease/cognitive
function/DEMENTIA/ENGLAND/fibrillation/history/IMPAIRMENT/ischaemia
/POPULATION/PREVENTION/prospective
study/risk/sex/STROKE/transient/vascular
Yamamoto, H. and Bogousslavsky, J. (1998), Mechanisms of second and further strokes.
Journal of Neurology Neurosurgery and Psychiatry, 64 (6), 771-776.
Abstract: Objectives-The mechanisms underlying recurrent stroke may be complex and
multifactorial, but they have not been studied systematically. The aim was to
analyse the different patterns and pathophysiological mechanisms of second and
further strokes. Methods-Recurrent stroke patterns and mechanisms were studied
in 102 patients admitted with second or further strokes to the stroke centre in
Lausanne University Hospital. Results- The patients with an initial
cardioembolic stroke experienced recurrent stroke of the same type most often,
followed by those with initial non-lacunar non-cardioembolic stroke, brain
haemorrhage, and lacunar stroke (77%, 65%, 58%, and 48% respectively). Forty
two per cent of the recurrent strokes in patients with an initial brain haemorrhage
were ischaemic, whereas patients with ischaemic stroke only occasionally
suffered brain haemorrhage (5%). In patients with brain haemorrhage, the lobar
location predominated in both the first and all episodes (69% and 78%
respectively), suggesting a small, occult arteriovenous malformation or cerebral
amyloid angiopathy rather than hypertensive small artery disease. The functional
disability of patients after an initial lacunar stroke was significantly better than in
patients with other stroke subtypes (p 60 months) were included. Patients were categorized as
asymptomatic if they were free of cerebrovascular incidents for at least 24
months (n = 18). Symptomatic patients had suffered ischemic strokes or transient
ischemic attacks within the previous 3 days (n = 35). Platelet function was
assessed using the PFA-100 system that allows for quantitative assessment of
platelet function, reporting platelet aggregatability as the time required to close a
small aperture in a biologically active membrane. Results Collagen/epinephrine
closure times were significantly shorter in symptomatic patients than in
asymptomatic patients (p 40% of contracting myocardium estimated to be at risk for severe
ischemia during angioplasty. The cardiac (liters/min per m2) and stroke work
(g.m/m2) indexes decreased from mean baseline values of 2.5 +/- 0.52 and 52 +/-
15 to 1.7 +/- 0.47 and 27 +/- 12 (mean +/- SD), respectively, during
nonsupported balloon inflations but decreased only to 2.1 +/- 0.52 (p 80 years of age with MI (P not significant); to
three of seven patients (43%) 80
years of age with stroke (P not significant); to two of four patients (50%) (70
years of age with PAD, to seven of 17 patients (41%) 70 to 80 years of age with
PAD, and to 10 of 25 patients (40%) >80 years of age with PAD (P not
significant); and to six of 15 patients (40%) 80 years of age with no CAD,
stroke, or PAD (P not significant). None of the other patients with MI, stroke,
PAD, or no CAD, stroke, or PAD was treated with diet or lipid- lowering drugs.
CONCLUSIONS: Measurement of serum LDL cholesterol and of appropriate
use of lipid-lowering drugs and diet in older patients with MI, stroke, PAD, and
no CAD, stroke, or PAD is underutilized in an academic, hospital-based
geriatrics practice
Keywords: age/cholesterol/coronary artery disease/CORONARY
HEART-DISEASE/DESIGN/diet/drug
therapy/drugs/GUIDELINES/LDL/lipids/MEASUREMENT/myocardial
infarction/MYOCARDIAL-INFARCTION/PRAVASTATIN/PREVENTION/str
oke/women
Obisesan, T.O., Hirsch, R., Kosoko, O., Carlson, L. and Parrott, M. (1998), Moderate
wine consumption is associated with decreased odds of developing age-related
macular degeneration in NHANES-1. Journal of the American Geriatrics Society,
46 (1), 1-7.
Abstract: OBJECTIVE: To determine the association between alcohol intake and the
risk of developing age-related macular degeneration (AMD). DESIGN: Case
control study. PARTICIPANTS: The sample consisted of 3072 adults 45 to 74
years of age with macular changes indicative of AMD who participated in a
nationally representative sample of the first National Health Nutrition and
Examination Survey (NHANES-1) between 1971 and 1975: (a) the
ophthalmology data set and (b) the medical history questionnaire. MAIN
OUTCOME MEASURES: Alcohol intake and the risk of developing AMD were
measured. AMD was determined by staff at the National Eye Institute by
fundoscopy examination using standardized protocol. RESULTS: Overall, 184
individuals (6%) had AMD. We observed a statistically significant but negative
association between AMD and the type of alcohol consumed in a bivariate model
(OR 0.86; 95% CI 0.73, 0.99). In the same model, age maintained a consistently
strong association with AMD (OR 1.08; 95% CI 1.06-1.11; P 20 cm/s (RR 1.7, p = 0.008) and complex aortic plaque (RR
2.1%, p 350 mg/dL (P 85 years (p 85 years (p 17 vs. 137 + 22 mm Hg for standing, p 16 vs. 144 +/- 22 mm Hg for lying, p 2 days' duration who may
benefit from immediate cardioversion with self-administered
low-molecular-weight heparin (enoxaparin) as a bridge antithrombotic therapy to
warfarin, after a negative transesophageal echo-cardiography (TEE) screening
for thrombus. Assuming no difference in stroke or bleeding rates, our cost
minimization model shows that the TEE- guided enoxaparin treatment costs are
$1353 lower per patient than an Intravenous unfraction-ated heparin approach.
Sensitivity analyses for stroke and bleeding reveal that the treatment-cost
economic dominance of the TEE-guided enoxaparin approach may be enhanced
by an expected improvement in clinical outcome
Keywords: ANTICOAGULANT-THERAPY/antithrombotic/antithrombotic
therapy/atrial fibrillation/bleeding/cardioversion/COMPLICATIONS/cost/cost
analysis/costs/DEEP-VEIN
THROMBOSIS/DISEASE/echocardiography/ECONOMIC-ANALYSIS/ELECT
IVE CARDIOVERSION/fibrillation/heparin/low molecular weight
heparin/low-molecular-weight
heparin/MANAGEMENT/outcome/PREVENTION/screening/stroke/SURGERY
/therapy/thrombus/transesophageal
echocardiography/treatment/UNFRACTIONATED HEPARIN/warfarin
Guralnik, J.M., Ferrucci, L., Balfour, J.L., Volpato, S. and Di Iorio, A. (2001),
Progressive versus catastrophic loss of the ability to walk: Implications for the
prevention of mobility loss. Journal of the American Geriatrics Society, 49 (11),
1463-1470.
Abstract: OBJECTIVES: Loss of mobility is an important functional outcome that can
have devastating effects on quality of life and the ability of older persons to
remain independent in the community. Although a large amount of research has
been done on risk factors for disability onset, little work has focused on the pace
of disability progression. This study characterizes the development of severe
walking disability over time and evaluates risk factors and subsequent mortality
as they relate to mobility disability with progressive or catastrophic onset.
DESIGN: Population-based prospective cohort study with annual follow-up
assessments for up to 7 years SETTING: Three communities of the Established
Populations for Epidemiologic Studies of the Elderly. PARTICIPANTS: There
were 5,355 persons not disabled at baseline and the first follow-up who had
adequate data available to classify mobility disability during subsequent
follow-ups. MEASUREMENTS: Severe mobility disability was defined as the
need for help from a person to walk across a room or inability to walk across a
room. Those developing severe mobility disability were classified as having
progressive mobility disability if they had been unable to walk half a mile in
either of the prior 2 years. They were classified as having catastrophic mobility
disability if they reported having been able to walk half a mile in two previous
annual interviews. RESULTS: The overall incidence of severe mobility disability
was 11.6 cases/1,000 person years. Those age 85 and older or having three or
ii-tore chronic conditions at baseline were significantly more likely to develop
progressive disability than catastrophic disability. Stroke, hip fracture, and
cancer occurring during follow-up were associated with very high risk of severe
mobility disability. For stroke and hip fracture, the risk was twice as high for
catastrophic disability as for progressive disability, but this difference did not
reach statistical significance. Risk for catastrophic disability from cancer was
significantly greater than for progressive disability. Half of catastrophic
disability subjects had stroke, hip fracture, or cancer in the year immediately
preceding this disability. Incident heart attack did not predict severe mobility
disability. Among those who developed severe mobility disability, type of
disability did not influence subsequent survival for the first 3 years, but beyond 3
years those with catastrophic disability had a relative risk of death of 0.4 (95%
confidence interval 0.2-0.9) compared with those with progressive disability.
CONCLUSION: The observation that risk factors and mortality outcomes were
both different for progressive and catastrophic mobility disability supports the
value of ascertaining the pace of disability development as a useful
characterization of disability. Further progress in developing prevention and
treatment strategies may be made by taking the pace of disability development
into account
Keywords: ADULTS/age/aging/cancer/chronic disease/cohort
study/community/death/DECLINE/DESIGN/development/DISABILITY/disabili
ty/FUNCTIONAL OUTCOMES/functional status/heart/high risk/HIP
FRACTURE/HOSPITALIZATION/incidence/MEASUREMENT/mobility/mort
ality/OBJECTIVES/OLDER
PERSONS/outcome/PATTERNS/PREDICTORS/prevention/prospective cohort
study/quality of life/relative risk/research/risk/risk
factors/stroke/treatment/TRIAL
Lonn, E., Roccaforte, R., Yi, Q.L., Dagenais, G., Sleight, P., Bosch, J., Suhan, P., Micks,
M., Probstfield, J., Bernstein, V. and Yusuf, S. (2002), Effect of long-term
therapy with ramipril in high-risk women. Journal of the American College of
Cardiology, 40 (4), 693-702.
Abstract: OBJECTIVES We evaluated the effects of long-term therapy with the
angiotensin-converting enzyme (ACE) inhibitor ramipril on major cardiovascular
(CV) outcomes in high-risk women. BACKGROUND The effect of long-term
ACE inhibitor therapy in high-risk women without heart failure and with
preserved left ventricular (LV) systolic function has not been previously reported.
METHODS The Heart Outcomes Prevention Evaluation (HOPE) trial is a large,
randomized clinical trial that evaluated. ramipril and vitamin E in high-risk
patients. We present the preplanned analysis of the effects of ramipril in women
in the HOPE study. The study randomized 2,480 women aged 55 years with
vascular disease or diabetes and at least one additional CV risk factor and
without heart failure or a known low LV ejection fraction to ramipril (10 mg/day)
or placebo. The primary outcome was the composite of myocardial infarction,
stroke or CV death. Average follow-up was 4.5 years. RESULTS Treatment with
ramipril resulted in reduced primary end point rates (11.3% vs. 14.9% in the
placebo arm; relative risk [RR] 0.77, 95% confidence interval [CI] 0.62 to 0.96;
p = 0.019), fewer strokes (3.1% vs. 4.8%; RR 0.64, 95% CI 0.43 to 0.96; p =
0.029) and fewer CV deaths (4.2% vs. 6.996; RR 0.62, 95% CI 0.44 to 0.88; p =
0.0068). There were trends toward reduced rates of myocardial infarction, heart
failure and all-cause death. The beneficial effect of ramipril was similar in
women and men. CONCLUSIONS Treatment with ramipril reduces the CV risk
in high-risk women without heart failure and with preserved LV systolic function.
(C) 2002 by the American College of Cardiology Foundation
Keywords: ACE inhibitor/aged/cardiovascular/clinical trial/CLINICAL-
TRIALS/death/diabetes/DISEASE/ESTROGEN/heart/heart failure/high
risk/infarction/INHIBITORS/left ventricular/LEFT-VENTRICULAR
DYSFUNCTION/men/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/NEW-YORK/OBJECTIVES/outcom
e/POSTMENOPAUSAL WOMEN/primary/ramipril/randomized/randomized
clinical trial/RECEPTOR GENE-EXPRESSION/relative
risk/RENIN-ANGIOTENSIN SYSTEM/REPLACEMENT THERAPY/risk/risk
factor/stroke/therapy/trends/trial/vascular/vascular disease/vitamin/vitamin
E/women
Friedman, S.M., Munoz, B., West, S.K., Rubin, G.S. and Fried, L.P. (2002), Falls and
fear of falling: Which comes first? A longitudinal prediction model suggests
strategies for primary and secondary prevention. Journal of the American
Geriatrics Society, 50 (8), 1329-1335.
Abstract: OBJECTIVES: Previous cross-sectional studies have shown a correlation
between falls and fear of falling, but it is unclear which comes first. Our
objectives were to determine the temporal relationship between falls and fear of
falling, and to see whether these two outcomes share predictors. DESIGN: A 20-
month, population-based, prospective, observational study. SETTING: Salisbury,
Maryland. Each evaluation consisted of a home-administered questionnaire,
followed by a 4- to 5-hour clinic evaluation. PARTICIPANTS: The 2,212
participants in the Salisbury Eye Evaluation project who had baseline and
20-month follow-up clinic evaluations. At baseline, subjects were aged 65 to 84
and community dwelling and had a Mini-Mental State Examination score of 18
or higher. MEASUREMENTS: Demographics, visual function, comorbidities,
neuropsychiatric status, medication use, and physical performance-based
measures were assessed. Stepwise logistic regression analyses were performed to
evaluate independent predictors of falls and fear of falling at the follow-up
evaluation, first predicting incident outcomes and then predicting fall or
fear-of-falling status at 20 months with baseline falling and fear of falling as
predictors. RESULTS: Falls at baseline were an independent predictor of
developing fear of falling 20 months later (odds ratio (OR) = 1.75; P 60 years
old. Age at first event ranged from 29 to 86 years (mean 61 +/- 14 years). Most
(n = 37; 72%) events occurred in those >50 years, although 14 (28%) younger
patients (less than or equal to50 years) also had events. Multivariate analysis
showed stroke and other peripheral vascular events to be independently
associated with congestive symptoms and advanced age, as well as with atrial
fibrillation (in 45 [88%] of 51 patients), at the initial evaluation. The cumulative
incidence of these events among patients with atrial fibrillation was significantly
higher in non-anticoagulated patients as compared with patients receiving
warfarin (31% vs. 18%; p 1 g/d. Nevertheless, in
persons with CKD, even those with proteinuria below the dipstick positive level
(approximately 300 mg/d or urine protein to creatinine ratio of 0.22), aggressive
BP control also may be warranted because of the high risk of nonrenal
cardiovascular disease. Multiple antihypertensive drugs will be required in the
vast majority of patients with diabetes and/or reduced kidney function to attain
BP goal. Resin-angiotensin system (RAS) modulator therapy is indicated among
persons with diabetes mellitus and CKD. Available data support the use of
angiotensin receptor blockers in persons with type 2 diabetes and overt
nephropathy for preservation of kidney function. Among persons with type I
diabetes with or without overt nephropathy, type 2 diabetes without overt
nephropathy and in nondiabetic CKD, the available clinical data support the use
of angiotensin-converting enzyme inhibitors as the RAS modulator of choice.
Low therapeutic target BP levels 75%) RCS, a strategy not unlike that adopted for primary CENDX
Keywords: ARTERY DISEASE/carotid
stenosis/ENDARTERECTOMY/morbidity/mortality/NATURAL-HISTORY/OC
CLUSION/prevention/RESTENOSIS/RISK/risk
factors/SERIES/STROKE/stroke prevention/TERM FOLLOW-UP/transient
ischemic attack/vascular disease
Lennard, N., Smith, J., Dumville, J., Abbott, R., Evans, D.H., London, N.J.M., Bell,
P.R.F. and Naylor, A.R. (1997), Prevention of postoperative thrombotic stroke
after carotid endarterectomy: The role of transcranial Doppler ultrasound.
Journal of Vascular Surgery, 26 (4), 579-584.
Abstract: Purpose: To determine the incidence of particulate embolization after carotid
endarterectomy (CEA), the effect of dextran-40 infusion in patients with
sustained postoperative embolization, and the impact of transcranial Doppler
(TCD) monitoring plus adjuvant dextran therapy on the rate of postoperative
carotid thrombosis. Methods: Prospective study in 100 patients who underwent
CEA with 6-hour postoperative monitoring using a TCD that was modified to
allow automatic, intermittent recording from the ipsilateral middle cerebral artery
waveform (10 minute sample every 30 minutes). An incremental dextran-40
infusion was commenced if 25 or more emboli were detected in any 10- minute
period. Results: Overall, 48% of patients had one or more emboli detected in the
postoperative period, particularly in the first 2 hours. However, sustained
embolization that required Dextran therapy developed in only five patients, In
each case, the rate of embolization rapidly diminished. Conclusions: A small
proportion of patients have sustained embolization after CEA, which in previous
studies has been shown to be highly predictive of thrombotic stroke. Intervention
with dextran reduced and subsequently stopped all the emboli in those in whom
it was used and contributed to a 0% perioperative morbidity and mortality rate in
this series
Keywords: ARTERY THROMBOSIS/carotid/carotid endarterectomy/cerebral/cerebral
artery/DIAGNOSIS/emboli/endarterectomy/incidence/morbidity/mortality/stroke
/therapy/thrombosis/transcranial Doppler ultrasound
Frawley, J.E., Hicks, R.G., Beaudoin, M. and Woodey, R. (1997), Hemodynamic
ischemic stroke during carotid endarterectomy: An appraisal of risk and cerebral
protection. Journal of Vascular Surgery, 25 (4), 611-619.
Abstract: Purpose: The purpose of this study was to validate the commonly accepted
indicators of risk of ischemic stroke that indicate the necessity for cerebral
protection during carotid endarterectomy (CEA), and to examine the efficacy of
high-dose thiopentone sodium (thiopental) as a cerebral protection method in
patients who are at high risk of intraoperative ischemic stroke. Method: In a
prospective study of 37 CEAs pet-formed for symptomatic stenosis >70%,
functional and clinical indicators of risk of ischemic stroke during carotid cross-
clamping were identified. Functional indicators of risk were the development of
ischemic electroencephalogram (EEG) changes and stump pressure 70% reduction in
diameter) and for 16 healthy control subjects. The 18 patients with ICA flow
lesion and no visible infarction on MRI who underwent CEA were evaluated
before and 7 days after surgery (CEA group). The 16 control subjects had never
had a cerebral event, and brain MRI and carotid duplex scan study results were
normal in all (control group). Results: Preoperative ICA volume flow was
severely decreased to less than 150 mL/min in all 18 patients, in comparison with
our laboratory normal value of matched age group of 250 to 300 mL/min. After
CEA, ICA volume flow was increased to greater than 300 mL/min in all patients
(P = .00). For patients in the CEA group, preoperative N- acetylaspartate/creatine
and choline/creatine ratios in the MCA territory were slightly decreased
compared with the healthy subjects in the control group but were within normal
limits. However, the postoperative values of N-acetylaspartate/creatine and
choline/creatine ratios in the ipsilateral MCA territory were significantly
increased as compared with the preoperative values (P 80%) was managed in 70 patients (61%), and symptomatic lesions (>50%)
were treated in 44 patients (39%). Results. CAS was technically successful in all
patients. Mean severity of stenosis before CAS was 87% +/- 6%, compared with
9% +/- 4% after CAS. Two patients (1.9%) died, 1 of reperfusion-intracerebral
hemorrhage and 1 of myocardial infarction 10 days after discharge; and 1 patient
(0.95%) had a stroke (retinal infarction), for a 30-day stroke and death rate of
2.85%. Two patients (1.9%) had transient neurologic events. No cranial nerve
deficits were noted. No neurologic complications have been noted in the last 27
patients (26%). Conclusions. A 30-day stroke and death rate of 2.85% in our
experience demonstrates acceptability of CAS as an alternative to repeat
operation or primary CEA in patients at high risk or in patients with
radiation-induced stenosis. We recommend further clinical investigation of CAS
and participation in clinical trials by vascular surgeons. (J Vasc Surg 2003;37:
1234-9.)
Keywords: age/ANGIOPLASTY/carotid/carotid endarterectomy/carotid stenosis/clinical
trials/complications/death/ENDARTERECTOMY/hemorrhage/high
risk/infarction/INITIAL
EXPERIENCE/MANAGEMENT/men/myocardial/myocardial
infarction/neurologic
complications/PLACEMENT/PREVENTION/primary/RESTENOSIS/results/rev
iew/risk/severity/STENOSIS/stenting/STROKE/SURGERY/therapy/transient/tri
als/USA/use/vascular/women
Reed, A.B., Gaccione, P., Belkin, M., Donaldson, M.C., Mannick, A., Whittemore, A.D.
and Conte, M.S. (2003), Preoperative risk factors for carotid endarterectomy:
Defining the patient at high risk. Journal of Vascular Surgery, 37 (6),
1191-1199.
Abstract: Purpose: The efficacy of carotid endarterectomy (CEA) for prevention of
stroke has been demonstrated in randomized trials; however, the optimal
approach in patients excluded from these trials or who have other significant
comorbid conditions remains controversial, particularly with the advent of
percutaneous interventions. We examined the influence of putative risk factors
on outcome of CEA in a single-center experience. Methods: A retrospective
analysis of 1370 consecutive CEA performed from 1990 to 1999 was undertaken.
Preoperative risk factors examined included age older than 80 years, congestive
heart failure, chronic obstructive pulmonary disease, renal failure (serum
creatinine concentration > 2.0 mg/dL), contralateral carotid artery occlusion,
recurrent ipsilateral carotid artery stenosis, ipsilateral hemispheric symptoms
within 6 weeks, and recent coronary bypass grafting (CABG). The Fisher exact
test was used to identify baseline variables associated with perioperative (30 days)
risk for stroke or death. Multivariate analysis with Poisson regression was used
to study the effect of all univariate criteria in combination. Results. In the overall
cohort, there were 32 adverse events (2.3%), including 11 deaths (0.8%), 6
disabling strokes (0.4%), and 10 nondisabling strokes (0.7%). There was no
significant difference in incidence of perioperative stroke or death between
patients with one or more risk factors (n = 689) and those with no risk factors
(low risk, n = 681). Thirty-day mortality was significantly greater in patients
with two or more risk factors compared with patients with no risk factors (2.8%
vs 0.3%; P = .04), but no significant difference was noted in perioperative stroke
rate (2.3% vs 1.0%). Univariate analysis demonstrated that contralateral carotid
occlusion (n = 75) was the only significant predictor of adverse outcome (5
events, 6.7%) among the variables tested; this was confirmed with multivariate
analysis (relative risk, 4.3; 95% confidence interval, 1.2-12.3; P = .01). Five-year
survival for patients with two or more risk factors was notably diminished
compared with that for patients with no risk factors (38.7% +/- 5.9% vs 75.0%
+/- 2.6%; P 10(5) cfu/ml of urine on >25% of an
individual's collected cultures. Women with persistent BU more frequently were
incontinent of bowel and bladder (OR 5.3, 6.3, respectively), more likely to be
functionally disabled (OR 3.2), to carry a diagnosis of dementia (OR 2.4), and
less likely to have suffered a stroke (OR 0.40). Cancer (OR 6.5) was the only risk
factor for persistent BU in men. The number of antibiotic courses prescribed,
frequency of hospitalizations, and mortality rates were not significantly different
between the two BU groups in either men or women. Conclusions. Persistent BU
is common in nursing home residents. The association of bowel and bladder
incontinence and functional disability with persistent bacteriuria suggests that
treatment or prevention of these risk factors may prevent or decrease the
incidence of bacteriuria. There was no evidence of significant adverse outcomes
resulting directly from the bacteriuric state. Higher mortality in the bacteriuric
group was the result of underlying functional debility and severity of illness
rather than the presence or persistence of BU
Keywords: ASSOCIATION/ELDERLY INSTITUTIONALIZED
MEN/INFECTIONS/MORTALITY/POPULATION/SURVIVAL
Freidl, W., Schmidt, R., Stronegger, W.J. and Reinhart, B. (1997), The impact of
sociodemographic, environmental, and behavioral factors and cerebrovascular
risk factors as potential predictors of the Mattis Dementia Rating Scale. Journals
of Gerontology Series A-Biological Sciences and Medical Sciences, 52 (2),
M111-M116.
Abstract: Background. Age and education have been found to affect the Mattis Dementia
Rating Scale (MDRS) score of elderly normals, but there have been no studies
assessing the influence of environmental and behavioral factors on this scale.
Their role as potential predictors of the MDRS total score was investigated.
Methods. The MDRS was administered to 1,927 normal elderly subjects in the
setting of a stroke prevention study. Results were correlated with 16
sociodemographic, environmental, and behavioral factors, and cerebrovascular
risk factors. Study statistics resulted from multiple logistic regression analysis.
Results. Results indicated that higher age and arterial hypertension were
associated with poorer cognitive performance, while better education and
moderate general life stress exerted a positive effect on the participants' test
results. Conclusions. Thus, besides the well-established factors of age and
educational level, moderate general life stress and hypertension were identified
as relevant predictors in determining the MDRS test performance of elderly
normals
Keywords: AGE/arterial hypertension/cerebrovascular/COGNITIVE
IMPAIRMENT/DIAGNOSIS/EDUCATION/elderly/environmental and
behavioral
factors/hypertension/INDIVIDUALS/MENTAL-STATE-EXAMINATION/POP
ULATION/predictors/prevention/risk/risk
factors/SENSITIVITY/SOCIETY/SPECIFICITY/stress/stroke/stroke prevention
Fuchs, Z., Blumstein, T., Novikov, I., Walter-Ginzburg, A., Lyanders, M., Gindin, J.,
Habot, B. and Modan, B. (1998), Morbidity, comorbidity, and their association
with disability among community-dwelling oldest-old in Israel. Journals of
Gerontology Series A-Biological Sciences and Medical Sciences, 53 (6),
M447-M455.
Abstract: Background. The impact of chronic conditions on the development of
disability has not yet been comprehensively studied among the elderly
population living in Israel. This study evaluates the prevalence of disability and
morbidity among the community- dwelling oldest-old population and examines
the association between medical conditions, comorbidity, and disability in basic
and instrumental activities of daily living (ADLs, IADLs). Method. The data are
based on a national random stratified sample of 1,820 Israeli Jewish individuals
75-94 years old. of whom 1,487 lived in the community. Results. Nineteen
percent of the population was disabled in ADLs and 36% in IADLs. Disability
rose with age and was higher for women and among individuals of Middle
Eastern and North African origin. Stepwise logistic regression indicates that the
variables associated with disability in ADLs and IADLs were older age, Middle
Eastern or North African origin, living with others, and the following conditions:
stroke, hip fracture, diabetes, osteoporosis, anemia, and heart attack. In addition,
lower education and suffering from urinary or kidney diseases, respiratory
disease, and/or Parkinson's disease were related to disability in ADLs; being a
woman and suffering from heart diseases other than heart attack were related to
disability in IADLs. Comorbidity was related to increased disability only for
individuals with three or more conditions. Conclusions. The identification of
medical conditions and sociodemographic variables related to limitations in
functioning may serve as a basis for health promotion and disease prevention in
elders by attempting to reduce the incidence and disabling consequences of
known disabling conditions
Keywords:
ABILITY/age/comorbidity/development/diseases/education/elderly/ELDERS/F
UNCTIONAL STATUS/HEALTH/health
promotion/heart/incidence/LIMITATIONS/MEDICAL
CONDITIONS/morbidity/osteoporosis/prevention/SOCIETY/stroke/women
Aronow, W.S. (2001), Treatment of older persons with hypercholesterolemia with and
without cardiovascular disease. Journals of Gerontology Series A-Biological
Sciences and Medical Sciences, 56 (3), M138-M145.
Abstract: Hypercholesterolemia is a risk factor for new coronary events in older men and
women. Secondary prevention trials have demonstrated in persons with coronary
artery disease (CAD) and hypercholesterolemia that statin drugs reduced in older
persons all-reuse mortality, cardiovascular mortality, coronary events, coronary
revascularization. stroke, and intermittent claudication. Statins have also been
shown to slow progression of coronary atherosclerotic plaques in persons with
CAD, to reduce restenosis after coronary stent implantation, and to decrease
myocardial ischemia in persons with CAD. Older men and women with CAD,
prior atherothrombotic brain infarction, peripheral arterial disease, or extracranial
carotid arterial disease and a serum low-density lipoprotein (LDL) cholesterol
level higher than 125 mg/dl despite diet should be treated with statin drug
therapy to loner the serum LDL cholesterol level below 100 mg/dl. Primary
prevention trials have shown that statins were also effective in reducing
cardiovascular events in older persons with hypercholesterolemia. On the basis
of data from the Air Force/Texas Coronary Atherosclerosis Prevention Study, the
physician should consider using statins in persons aged 65-80 years without
cardiovascular disease with a serum LDL cholesterol level above 130 mg/dl and
serum high- density lipoprotein cholesterol level below 50 mg/dl
Keywords: aged/AGED GREATER-THAN-OR-EQUAL-TO-62
YEARS/arterial/ASSOCIATION TASK-FORCE/ATHEROTHROMBOTIC
BRAIN INFARCTION/brain/brain infarction/cardiovascular/cardiovascular
disease/cardiovascular events/cardiovascular
mortality/carotid/cholesterol/coronary artery disease/CORONARY
HEART-DISEASE/coronary revascularization/coronary
stent/DENSITY-LIPOPROTEIN CHOLESTEROL/diet/disease/drug
therapy/drugs/ELDERLY PATIENTS/high density
lipoprotein/hypercholesterolemia/infarction/ischemia/LDL/LDL
cholesterol/LDL-cholesterol/low density
lipoprotein/men/mortality/myocardial/peripheral arterial disease/PERIPHERAL
ARTERIAL-DISEASE/prevention/PREVIOUS MYOCARDIAL-
INFARCTION/RECURRENT EVENTS
CARE/restenosis/revascularization/risk/risk
factor/SCANDINAVIAN-SIMVASTATIN-SURVIVAL/serum/SOCIETY/statin
/statins/stent/stroke/therapy/trials/women
Murphy, D.J., Gahm, G.J., Santilli, S., North, P., Oliver, S.C.N. and Shapiro, H. (2002),
Seniors' preferences for cancer screening and medication use based on absolute
risk reduction. Journals of Gerontology Series A-Biological Sciences and
Medical Sciences, 57 (2), M100-M105.
Abstract: Background. This study as conducted to determine the influence of patient
perceptions of absolute risk on choices for cancer screening and use of
medications to present heart attack, stroke, and hip fracture. Methods. At the end
of routine office visits, we surveyed all eligible consecutive patients who visited
four geriatricians in a Denver practice between November 8, 1993, and February
9, 1994. Results. We saw a total of 675 outpatients during the study period and
completed the interview with 409 patients (75% female, mean age 81.78%
Caucasian). We found a strong correlation between (i) increased probability of
detecting cancer and greater preference for cancer screening tests (p 0.1). For the combined in-hospital endpoint of
death or non-fatal stroke at 4 weeks, there was a 12% (6) proportional risk
reduction with aspirin (545 [5.3%] vs 614 [5.9%]; 2p=0.03), an absolute
difference of 6.8 (3.2) fewer cases per 1000. At discharge, 3153 (30.5%)
aspirin-allocated patients and 3266 (31.6%) placebo-allocated patients were dead
or dependent, corresponding to 11.4 (6.4) fewer per 1000 in favour of aspirin
(2p=0.08). Interpretation There are two major trials of aspirin in acute ischaemic
stroke. Taken together, CAST and the similarly large IST show reliably that
aspirin started early in hospital produces a small but definite net benefit, with
about 9 (SD 3) fewer deaths or non-fatal strokes per 1000 in the first few weeks
(2p=0.001), and with 13 (5) fewer dead or dependent per 1000 after some weeks
or months of followup (2pmol/L rise in plasma
ascorbic acid concentration, equivalent to about 50 g per day increase in fruit and
vegetable intake, was associated with about a 20% reduction in risk of all-cause
mortality (p856 pg/mL) were associated with a 2.7-fold increase in risk (95% CI
1.6-4.9, p=0.001). This effect was independent of traditional cardiovascular risk
factors and at least additive to that of C- reactive protein. There was no
significant association between MIC-1 polymorphism and vascular events.
Interpretation MIC-1 could be a novel target for cardiovascular disease
prevention
Keywords: age/APPARENTLY HEALTHY-
MEN/ATHEROSCLEROSIS/atherothrombosis/C-REACTIVE
PROTEIN/cardiovascular/cardiovascular disease/cardiovascular disease
prevention/cardiovascular event/cardiovascular events/cardiovascular
risk/cardiovascular risk factors/case-control
study/control/DISEASE/ENGLAND/EXPRESSION/gene/GROWTH-FACTOR-
BETA/infarction/INFLAMMATION/LONDON/macrophage/MEMBER/MIC-1/
myocardial/myocardial infarction/polymorphism/prevention/risk/risk
factors/serum/smoking/status/stroke/TGF-BETA
SUPERFAMILY/vascular/women
Cherry, N., Gilmour, K., Hannaford, P., Heagerty, A., Khan, M.A., Kitchener, H.,
McNamee, R., Elstein, M., Kay, C., Seif, M. and Buckley, H. (2002), Oestrogen
therapy for prevention of reinfarction in postmenopausal women: a randomised
placebo controlled trial. Lancet, 360 (9350), 2001-2008.
Abstract: Background Results of observational studies suggest that hormone
replacement therapy (HRT) could reduce the risk of coronary heart disease
(CHD), but those of randomised trials do not indicate a lower risk in women who
use oestrogen plus progestagen. The aim of this study was to ascertain whether
or not unopposed oestrogen reduces the risk of further cardiac events in
postmenopausal women who survive a first myocardial infarction. Methods The
study was a randomised, blinded, placebo controlled, secondary prevention trial
of postmenopausal women, age 50-69 years (n=1017) who had survived a first
myocardial infarction. Individuals were recruited from 35 hospitals in England
and Wales. Women received either one tablet of oestradiol valerate (2 mg; n=513)
or placebo (n=504), daily for 2 years. Primary outcomes were reinfarction or
cardiac death, and all-cause mortality. Analyses were by intention-to-treat.
Secondary outcomes were uterine bleeding, endometrial cancer, stroke or other
embolic events, and fractures. Findings Frequency of reinfarction or cardiac
death did not differ between treatment groups at 24 months (rate ratio 0.99, 95%
Cl 0.70-1.41, p=0.97). Similarly, the reduction in all-cause mortality between
those who took oestrogen and those on placebo was not significant (0.79,
0.50-1.27, p=0.34). The relative risk of any death (0.56, 0.23-1.33) and cardiac
death (0.33, 0.11-1.01) was lowest at 3 months post- recruitment. Interpretation
Oestradiol valerate does not reduce the overall risk of further cardiac events in
postmenopausal women who have survived a myocardial infarction
Keywords: age/all-cause
mortality/ATHEROSCLEROSIS/bleeding/cancer/cardiac/CHD/CORONARY
EVENTS/coronary heart
disease/death/disease/ENGLAND/ESTROGEN-REPLACEMENT/fractures/HE
ALTH/heart/heart disease/HEART-DISEASE/HORMONE REPLACEMENT
THERAPY/hospitals/HRT/infarction/INITIATION/LONDON/mortality/myocar
dial/myocardial infarction/observational studies/outcomes/postmenopausal
women/prevention/PROGRESSION/recruitment/relative
risk/RISK/secondary/SECONDARY
PREVENTION/stroke/therapy/treatment/trial/trials/use/women
Collins, R., Armitage, J., Parish, S., Sleight, P. and Peto, R. (2002), MRC/BHF Heart
Protection Study of cholesterol lowering with simvastatin in 20536 high-risk
individuals: a randomised placebo-controlled trial. Lancet, 360 (9326), 7-22.
Abstract: Background Throughout the usual LDL cholesterol range in Western
populations, lower blood concentrations are associated with lower cardiovascular
disease risk. In such populations, therefore, reducing LDL cholesterol may
reduce the development of vascular disease, largely irrespective of initial
cholesterol concentrations. Methods 20 536 UK adults (aged 40- 80 years) with
coronary disease, other occlusive arterial disease, or diabetes were randomly
allocated to receive 40 mg simvastatin daily (average compliance: 85%) or
matching placebo (average non-study statin use: 17%). Analyses are of the first
occurrence of particular events, and compare all simvastatin- allocated versus all
placebo-allocated participants. These "Intention-to-treat"comparisons assess the
effects of about two-thirds (85% minus 17%) taking a statin during the scheduled
5-year treatment period, which yielded an average difference in LDL cholesterol
of 1.0 mmol/L (about two-thirds of the effect of actual use of 40 mg simvastatin
daily). Primary outcomes were mortality (for overall analyses) and fatal or
non-fatal vascular events (for subcategory analyses), with subsidiary assessments
of cancer and of other major morbidity. Findings All-cause mortality was
significantly reduced (1328 [12.9%] deaths among 10 269 allocated simvastatin
versus 1507 [14.7%] among 10 267 allocated placebo; p=0.0003), due to a
highly significant 18% (SE 5) proportional reduction in the coronary death rate
(587 [5.7%] vs 707 [6.9%]; p=0.0005), a marginally significant reduction in
other vascular deaths (194 [1.9%] vs 230 [2.2%]; p=0.07), and a non-significant
reduction in non- vascular deaths (547 [5.3%] vs 570 [5.6%]; p=0-4). There were
highly significant reductions of about one-quarter in the first event rate for
non-fatal myocardial infarction or coronary death (898 [8.7%] vs 1212 [11.8%];
p 2.9) +/- aspirin 75 mg
daily. Where patients had received two or three of these treatments successively,
the periods of time on each treatment were added and the number of patients
with recurrence(s) on each treatment were compared by Fisher's exact probability
test. 'High' anticoagulation (INRs > 2.9) +/- aspirin 75 mg daily was more
effective than aspirin 75 mg daily in preventing further thromboembolic events
(P = 0.0053). In addition, when comparing 'high' anticoagulation +/- aspirin 75
mg daily versus 'low' anticoagulation (INRs 2.0-2.9) +/- aspirin 75 mg daily,
there was a trend in favour of 'high' anticoagulation (P = 0.066). No statistically
significant difference could be demonstrated when comparing 'low'
anticoagulation +/- aspirin 75 mg daily with aspirin 75 mg daily (P = 0.092).
These results suggest that aggressive anticoagulation with or without low-dose
aspirin is effective in preventing further thromboembolic events in APS
Keywords: ANTICARDIOLIPIN/ANTICARDIOLIPIN
ANTIBODIES/ANTICOAGULANT/ANTICOAGULANTS/anticoagulation/anti
phospholipid syndrome/aspirin/ASSOCIATION/CEREBRAL
INFARCTION/EMBOLIC EVENTS/ENGLAND/ISCHEMIC
STROKE/LUPUS/prevention/secondary prevention/SYSTEMIC
LUPUS-ERYTHEMATOSUS/thrombosis/treatment/VALVULAR
HEART-DISEASE/VASCULOPATHY/VENOUS THROMBOSIS/warfarin
Brey, R.L. and Levine, S.R. (1996), Treatment of neurologic complications of
antiphospholipid antibody syndrome. Lupus, 5 (5), 473-476.
Abstract: Thrombosis associated with antiphospholipid antibodies (aPL) occurs in both
venous and the arterial circulation. The most common arterial thrombo-occlusive
event is cerebral infarction. We briefly review treatment strategies aimed at
patients with cerebrovascular disease and aPL. Besides general treatment issues,
we discuss primary prevention and secondary prevention. Most regimens include
antithrombotics or immune modulation. Prospective studies (currently underway)
are required to better estimate the rate of recurrent thrombo-occlusive events on
standardized therapy before one therapy can be recommended over another with
reasonable evidence
Keywords: ADULTS/ANTICARDIOLIPIN ANTIBODIES/anticardiolipin
antibody/ANTICOAGULANT/antiphospholipid
syndrome/aspirin/CEREBRAL-ISCHEMIA/EVENTS/LUPUS/lupus
anticoagulant/secondary prevention/stroke/STROKE/SYSTEMIC
LUPUS-ERYTHEMATOSUS/thrombosis/THROMBOSIS/treatment/warfarin/Y
OUNG-PEOPLE
Hunskaar, S. and Backe, B. (1992), Attitudes Towards and Level of Information on
Perimenopausal and Postmenopausal Hormone Replacement Therapy Among
Norwegian Women. Maturitas, 15 (3), 183-194.
Abstract: In order to investigate women's attitudes towards and level of information on
perimenopausal and postmenopausal hormone replacement therapy (HRT) 1019
women over 17 years of age constituting a representative sample of the
Norwegian female population were interviewed in 1990 as part of a monthly
national opinion poll (response rate 96.5%). Women's magazines proved to be
the most important source of information on hormone therapy. Only in the
over-45 age group were doctors mentioned frequently as information sources. A
high self- assessed information level was associated with a positive attitude
towards hormone therapy. Those who had obtained information from a doctor
were more positive than those who had not. More than half of those who
expressed an opinion believed that hormone therapy increased the risk of heart
infarction, stroke, breast cancer and cancer in general. There was a strong
association between a negative attitude, towards using hormones and belief in an
increased risk of serious disease. The women were more positive towards the use
of HRT for the prevention of osteoporosis and for postmenopausal urogenital
complaints than for the alleviation of climacteric symptoms
Keywords: ATTITUDE TO HEALTH/ESTROGENS/HORMONE REPLACEMENT
THERAPY/HRT/MENOPAUSE/VIEWS
Daly, E., Vessey, M.P., Barlow, D., Gray, A., McPherson, K. and Roche, M. (1996),
Hormone replacement therapy in a risk-benefit perspective. Maturitas, 23 (2),
247-259.
Abstract: The relative cost-effectiveness of different treatment strategies for hormone
replacement therapy (HRT) was assessed within the framework of a computer
model. Where data were lacking, it was necessary to make assumptions about the
effects of HRT, particularly in relation to combined oestrogen- progestogen
therapy and cardiovascular disease; however, sensitivity analyses were
performed to assess the impact of changing these assumptions on the
cost-effectiveness equation. It appears that net expenditure by the NHS will
depend critically on the direct costs of treatment, rather than on any indirect costs
incurred or saved as a result of side-effects. In terms of mortality, a reduction in
cardiovascular disease risk would have greatest impact and would overshadow
any small increase in breast cancer risk which may be associated with long-term
use. If the cardioprotective effect of oestrogen is real, our results suggest that
long-term prophylactic treatment of hysterectomised women would be relatively
cost-effective. Treatment of symptomatic menopausal women for any period of
time appears to offer very good value for money. The lack of data relating to
combined oestrogen-progestogen therapy and cardioprotection, and the major
importance of the latter in the equation of benefits and risks, make it more
difficult to draw conclusions about the cost-effectiveness of treating non-
hysterectomised asymptomatic women for prophylactic reasons
Keywords: cardiovascular
disease/CARDIOVASCULAR-DISEASE/COST-EFFECTIVENESS
ANALYSIS/cost-effectiveness analysis/disease risk/GENERAL-
PRACTICE/health care costs/hormone replacement
therapy/HRT/menopause/mortality/MYOCARDIAL-INFARCTION/POSTMEN
OPAUSAL
ESTROGEN/PREVENTION/QALYS/STROKE/treatment/VERTEBRAL
FRACTURES/WOMEN
Ushiroyama, T., Ikeda, A. and Ueki, M. (2002), Effect of continuous combined therapy
with vitamin K-2 and vitamin D-3 on bone mineral density and
coagulofibrinolysis function in postmenopausal women. Maturitas, 41 (3),
211-221.
Abstract: Objectives: To investigate the therapeutic effect of combined use of vitamin K,
and D, on vertebral bone mineral density in postmenopausal women with
osteopenia and osteoporosis. Subjects and methods: We enrolled 172 women
with vertebral bone mineral density .10). The odds of aortic
atherosclerosis (of any degree) were 2.87 times greater (95% confidence interval
[CI], 1.41-5.83; P=,004) and the odds of complex atherosclerosis (protruding
atheroma 24 mm thick, mobile debris, or plaque ulceration) were 2.71 times
greater (CI, 1.13-6.53; P=,03) in the AF group than in the non AF group. Age
was a significant predictor of aortic atherosclerosis (P 30 mm) rose from 4.8% in men aged 65-69 years to
10.8% in those aged 80-83 years. The overall prevalence of large (> 50 mm)
aneurysms was 0.69%. In a multivariate logistic model Mediterranean-born men
had a 40% lower risk of AAA (> 30 mm) compared with men born in Australia
(odds ratio [OR], 0.6; 95% CI, 0.4-0.8), while ex-smokers had a significantly
increased risk of AAA (OR, 2.3; 95% CI, 1.9-2.8), and current smokers had even
higher risks. AAA was significantly associated with established coronary and
peripheral arterial disease and a waist:hip ratio greater than 0.9; men who
regularly undertook vigorous exercise had a lower risk (OR, 0.8; 95% CI,
0.7-1.0). Conclusion: Ultrasound screening for AAA is acceptable to men in the
likely target population. AAA shares some but not all of the risk factors for
occlusive vascular disease, but the scope for primary prevention of AAA in later
life is limited
Keywords:
ADULTS/aged/aneurysm/aorta/Australia/BEHAVIORS/exercise/lifestyle/MEN/
peripheral arterial
disease/population/population-based/PREVALENCE/prevention/primary/primar
y prevention/RISK/risk factors/screening/SMOKING
CESSATION/STROKE/ultrasound/vascular/vascular
disease/WESTERN-AUSTRALIA/WOMEN
Heller, R.F., Fisher, J.D., D'Este, C.A., Lim, L.L.Y., Dobson, A.J. and Porter, R. (2000),
Death and readmission in the year after hospital admission with cardiovascular
disease: the Hunter Area Heart and Stroke Register. Medical Journal of Australia,
172 (6), 261-265.
Abstract: Objectives: To compare outcomes one year after hospital admission for
patients initially discharged with a diagnosis of acute myocardial infarction
(AMI), other ischaemic heart disease (other IHD), congestive heart failure (CHF)
or stroke. Design: Cohort study. Setting: Hunter Area Heart and Stroke Register,
which registers all patients admitted with heart disease or stroke to any of the 22
hospitals in the Hunter Area Health Service in New South Wales. Patients: 4981
patients with AMI, other IHD, CHF or stroke admitted to hospital as an
emergency between 1 July 1995 and 30 June 1997 and followed for at least one
year. Main outcome measures: Death from any cause or emergency hospital
readmission for cardiovascular disease. Results: In-hospital mortality varied from
1% of those with other IHD to 22% of those with stroke. Almost a third of all
patients discharged alive (and 38% of those aged 70 or more) had died or been
readmitted within one year. This varied from 22% of those with stroke to 49% of
those with CHF. The causes of death and readmission were from a spectrum of
cardiovascular disease, regardless of the cause of the original hospital admission.
Conclusions: Data from this population register show the poor outcome,
especially with increasing age, among patients admitted to hospital with
cardiovascular disease. This should alert us to determine whether optimal
secondary prevention strategies are being adopted among such patients
Keywords: acute/acute myocardial infarction/ACUTE
MYOCARDIAL-INFARCTION/AGE/aged/Australia/cardiovascular/cardiovasc
ular disease/congestive heart
failure/death/diagnosis/disease/FAILURE/heart/heart disease/heart
failure/hospital/hospitals/INDEX/infarction/ischaemic heart
disease/MODE/MORTALITY/myocardial/myocardial
infarction/outcome/population/prevention/RISK/secondary
prevention/stroke/VALIDATION/WOMEN
Hankey, G.J. (2000), Transient ischaemic attacks and stroke. Medical Journal of
Australia, 172 (8), 394-400.
Abstract: Stroke is the third most common cause of death and a major cause of disability
in Australia. Effective prevention is the most powerful strategy for reducing the
burden of stroke. Major modifiable causal risk factors for stroke include
hypertension, cigarette smoking, diabetes, atrial fibrillation, and carotid stenosis.
Atrial fibrillation, in particular, is undertreated in the community; almost all
patients should be prescribed warfarin or aspirin, depending on their absolute
risk of stroke and risk of bleeding complications. Patients with suspected acute
stroke should be referred immediately to a specialist stroke unit for urgent
assessment and care by an interested, organised, multidisciplinary team of stroke
experts. They should undergo immediate computed tomography brain scan and,
if intracranial haemorrhage is excluded, be given aspirin (160-300 mg).
Rehabilitation and secondary prevention of recurrent stroke should begin on day
one after stroke
Keywords: absolute risk/acute/acute stroke/aspirin/atrial
fibrillation/AUCKLAND/Australia/bleeding/brain/CARE/carotid/CAROTID
ENDARTERECTOMY/carotid stenosis/CEREBRAL INFARCTION/cigarette
smoking/community/complications/computed
tomography/death/diabetes/disability/fibrillation/haemorrhage/HEMORRHAGE/
hypertension/intracranial-haemorrhage/METAANALYSIS/prevention/recurrent
stroke/risk/risk factors/risk factors for stroke/secondary
prevention/smoking/STENOSIS/stroke/stroke unit/SURGERY/TRIALS/warfarin
Hender, K.M., Anderson, J.N. and Chong, W. (2001), Carotid stenting or
endarterectomy for stroke prevention? Medical Journal of Australia, 175 (8),
430-431
Keywords: ANGIOPLASTY/Australia/endarterectomy/prevention/stenting/stroke/stroke
prevention
Sturm, J.W., Davis, S.M., O'Sullivan, J.G., Vedadhaghi, M.E. and Donnan, G.A. (2002),
The Avoid Stroke as Soon as Possible (ASAP) general practice stroke audit.
Medical Journal of Australia, 176 (7), 312-316.
Abstract: Objectives: To determine the prevalence of stroke risk factors in a general
practice population and to identify pharmacotherapies currently used in
management of stroke risk factors. Design: Multicentre, observational study by
321 randomly selected general practitioners who each collected data on 50
consecutive patients attending their surgery. Patients and setting: 16 148 patients
aged 30 years or older attending general practices across Australia during 2000.
Outcome measures: Prevalence of hypertension, current smoking, diabetes,
hypercholesterolaemia, atrial fibrillation, recent history of stroke or TIA; extent
of pharmacotherapy use in risk-factor management. Results: 70% of patients had
one or more risk factors and 34% had two or more. Hypertension was the risk
factor with greatest prevalence (44%), followed by hypercholesterolaemia (43%)
and current smoking (17%). The prevalence of risk factors generally increased
with age, except for current smoking, where a decrease with age was seen. The
most common pharmacotherapies were cardiovascular agents, followed by
antiplatelet agents. Two-thirds of patients with hypertension were taking
cardiovascular drugs, most commonly angiotensin-converting enzyme inhibitors.
Conclusions: Stroke risk factors are highly prevalent in general practice patients
and GPs are ideally placed for opportunistic case-finding. There is considerable
scope for improving management of stroke risk factors. The Avoid Stroke as
Soon as Possible (ASAP) general practice stroke audit provides a baseline
against which progress in risk-factor management can be measured
Keywords: age/aged/angiotensin converting enzyme inhibitors/angiotensin-converting
enzyme inhibitors/antiplatelet/antiplatelet agents/atrial/atrial
fibrillation/audit/Australia/cardiovascular/COMMUNITY/diabetes/drugs/fibrillat
ion/general
practice/history/hypercholesterolaemia/hypertension/management/METAANAL
YSIS/population/prevalence/PREVENTION/risk/risk factor/risk
factors/smoking/stroke/surgery/TIA/TRIALS/use
Hankey, G.J. and Eikelboom, J.W. (2003), Antiplatelet drugs. Medical Journal of
Australia, 178 (11), 568-574.
Abstract: Antiplatelet drugs protect against myocardial infarction, stroke, cardiovascular
death and other serious vascular events in patients with a history of previous
vascular events or known risk factors for cardiovascular disease. Aspirin reduces
the risk of serious vascular events in patients at high risk of such an event by
about a quarter and is recommended as the first-line antiplatelet drug.
Clopidogrel reduces the risk of serious vascular events among high-risk patients
by about 10% compared with aspirin. It is as safe as aspirin, but much more
expensive. It is an appropriate alternative to aspirin for long-term secondary
prevention in patients who cannot tolerate aspirin, have experienced a recurrent
vascular event while taking aspirin, or are at very high risk of a vascular event
(greater than or equal to 20% per year). Addition of. clopidogrel to aspirin
reduces the risk of serious vascular events among patients with non-ST-segment
elevation acute coronary syndromes by 20%, and patients undergoing
percutaneous coronary intervention by 30%, compared with aspirin alone.
Addition of a glycoprotein IIb/IIIa receptor antagonist to aspirin reduces the risk
of vascular events among patients with non-ST-segment elevation acute coronary
syndromes by 10% and among patients undergoing percutaneous coronary
intervention by 30%, compared with aspirin alone; it appears to provide
incremental benefit in patients also treated with clopidogrel. Addition of
dipyridamole to aspirin seems to be more effective than aspirin alone for
preventing recurrent stroke, but its overall effect in preventing serious vascular
events in patients with ischaemic stroke and transient ischaemic attack has not
been determined
Keywords: ACETYLSALICYLIC-ACID/acute/acute coronary
syndromes/antiplatelet/antiplatelet drug/ARTERY
STENTS/ASPIRIN/Australia/cardiovascular/cardiovascular
disease/CLOPIDOGREL/death/dipyridamole/disease/drug/drugs/glycoprotein
IIb/IIIa receptor antagonist/high risk/history/infarction/ischaemic/ischaemic
stroke/myocardial/myocardial infarction/PERCUTANEOUS CORONARY
INTERVENTION/prevention/RANDOMIZED CONTROLLED
TRIALS/recurrent stroke/RISK/risk factors/secondary/SECONDARY
PREVENTION/stroke/STROKE PREVENTION/THROMBOTIC
THROMBOCYTOPENIC PURPURA/transient/transient ischaemic
attack/vascular/vascular event/vascular events
[Anon]. (1989), Aspirin for Prevention of Myocardial-Infarction and Stroke. Medical
Letter on Drugs and Therapeutics, 31 (799), 77-80
Keywords: DRUG
[Anon]. (2000), Aggrenox: A combination of antiplatelet drugs for stroke prevention.
Medical Letter on Drugs and Therapeutics, 42 (1071), 11-12
Keywords: antiplatelet/antiplatelet
drugs/combination/DRUG/drugs/prevention/stroke/stroke prevention
Bodo, M., Thuroczy, G., Nagy, I., Peredi, J., Sipos, K., Harcos, P., Nagy, Z., Voros, J.,
Zoltay, L. and Ozsvald, L. (1995), A Complex Cerebrovascular Screening
System (Cerberus). Medical Progress Through Technology, 21 (2), 53-66.
Abstract: Stroke is unique among neurological diseases since it has a high incidence rate,
severe burden of illness, high economic cost, and it may be preventable [1].
Described here is a system for screening the cerebral and vascular status of
individuals to detect the initial stages of vascular disorders. The computer based
polygraphic system (CERBERUS) questions subjects about risk factors, stresses,
neurologic symptoms and monitors impedance pulse waves of the head and
extremities, EEG, and EGG. The system has been tested in 691 cases. Doppler
control studies were carried out on approximately 300 of these cases. Additional
somatic measures and psychological tests related to stroke risk factors were
carried out for wide biological basis of possible correlation of CERBERUS data
base. The high incidence of cerebrovascular disturbance was established by
CERBERUS data, further confirmed by additional data gathered, and moreover
was compared by traditional medical records. The polygraphic system is more
sensitive at detecting physiological asymmetries of blood flow than even a
Doppler measurements. This suggests that it may be a significantly improved
means for the differential diagnosis of neurological disease and the screening of
subjects for arteriosclerosis, transient ischemic attack and stroke prevention to be
offered at the lowest level of medical service
Keywords:
ARTERIOSCLEROSIS/BLOOD-FLOW/diagnosis/diseases/EEG/incidence/ISC
HEMIA/POLYGRAPHIC
MEASURING/prevention/RHEOENCEPHALOGRAPHY/risk/RISK
FACTORS/SCREENING/STRESS/STROKE/STROKE
PREVENTION/transient/transient ischemic attack/vascular
Korin, J.D. and Avalos, J.C.S. (1996), Prophylaxis of venous thrombosis, yes but ..
Medicina-Buenos Aires, 56 (3), 299-307.
Abstract: Prevention of venous thromboembolism (VTE) can be achieved through
mechanic or pharmacological means. For the latter, unfractionated low dose
heparin, low molecular weight heparins and oral anticoagulants are successfully
and widely employed. Results of controlled and uncontrolled studies favour the
use of prophylactic heparin in different clinical and surgical conditions such as
myocardial infarction, stroke, orthopedic or prolonged surgery and surgical
interventions in patients older than forty. Useful parameters to evaluate the
results of VTE prophylaxis are discussed as well as timing, duration,
effectiveness, side effects and costs of therapy. Although the benefits of VTE
prohylaxis in high risk patients are clear, it is not routinely employed in
Argentina
Keywords: anticoagulants/COST-EFFECTIVENESS/DEEP-VEIN
THROMBOSIS/LOW-MOLECULAR-WEIGHT/myocardial
infarction/PREVENTION/STANDARD
HEPARIN/stroke/SURGERY/THROMBOEMBOLISM/thrombosis/TOTAL
HIP-REPLACEMENT/UNFRACTIONATED HEPARIN/WARFARIN
Ennis, I.L., Gende, O.A. and Cingolani, H.E. (1998), Prevalence of hypertension in 3154
young students. Medicina-Buenos Aires, 58 (5), 483-491.
Abstract: Blood pressure (BP) levels were evaluated in 3154 students (mean age 21
years old) of La Plata University, School of Medicine. BP was registered three
times in each student and the mean was used for all the analyses. Systolic (SBP)
and diastolic pressure (DBP) were significantly higher in men. Mean SEP was
126 +/- 13 mm Hg for men and 115 +/- 11 mm Hg for women. Mean DBP was
77 +/- 10 mm Hg and 74 +/- 9 mmHg for men and women, respectively. The
global prevalence of HBP (BP greater than or equal to 140 and / or 90 mm Hg)
was 12% when both sexes were considered together, but it was significantly
higher in men than in women (20% and 6% respectively; p 240 mg/dl, and a CT scan showing no evidence of small
vessel disease are, respectively, the characteristics most frequently encountered
in patients who suffer an ischemic stroke despite preventive treatment with
125-500 mg/day of ASA. Moreover, this treatment does not reduce initial and
long-term stroke severity
Keywords: age/aspirin/atrial fibrillation/cholesterol/coronary heart
disease/CT/fibrillation/heart/history/hypercholesterolemia/INFARCTION/ische
mic/ischemic stroke/LOW-DOSE ASPIRIN/myocardial
infarction/PATIENT/prevention/risk/risk
factors/serum/severity/SPAIN/stroke/stroke prevention/TIA/transient/transient
ischemic attack/treatment
del Pino, A.M., de Abajo, F.J., Montero, D., Madurga, M. and Martin-Serrano, G.
(2000), Ticlopidine use in Spain: a pharmacy-based drug utilization study.
Medicina Clinica, 115 (6), 211-213.
Abstract: BACKGROUND: In 1997 a program was set up to improve the use of
ticlopidine. In the present study we assess whether this objective was achieved.
PATIENTS AND METHODS: We carried out a pharmacy-based cross-sectional
study. RESULTS: Out Of 346 patients interviewed, 56% presented an off-label
indication for ticlopidine. In 23% of patients the daily dose used was lower or
higher than the recommended. Only 28% patients had the fortnightly blood
monitoring performed at the time of interview. CONCLUSIONS: The use of
ticlopidine in Spain is not consistent with the summary of product characteristics
and the program set up to improve it did not achieve a satisfactory result
Keywords: drug utilization/ISCHEMIC
STROKE/monitoring/PATIENT/pharmacy/PREVENTION/Spain/ticlopidine/use
Chamorro, A., Alonso, P., Arrizabalaga, J., Carne, X. and Camps, V. (2001), Limitations
of evidence-based medicine: the case of stroke. Medicina Clinica, 116 (9),
343-349
Keywords:
ASPIRIN/EUROPE/EVENTS/PREVENTION/Spain/stroke/THERAPY/TRIAL
Banegas, J.R.B., Ganan, L.D., Rodriguez-Artalejo, F., Enriquez, J.G., Perez-Regadera,
A.G. and Alvarez, F.V. (2001), Smoking-attributable deaths in Spain in 1998.
Medicina Clinica, 117 (18), 692-694.
Abstract: BACKGROUND: Between 1993 and 1997, smoking prevalence remained
stable in Spain yet age-adjusted death rates by smoking-related diseases
decreased. Our study aimed to estimate the burden of smoking-attributable
mortality in Spain in 1998. POPULATION AND METHOD: Spain's smoking
prevalence, mortality and relative risks for death from the Cancer Prevention
Study II were used to estimate smoking-attributable mortality in the population
aged 35 years and over. RESULTS: In 1998, 55,613 deaths were attributable to
smoking. One out of 4 deaths in males and one out of 40 deaths in females were
attributable to tobacco. Two thirds of the attributable mortality corresponded to
deaths due to lung cancer, chronic obstructive pulmonary disease, ischemic heart
disease and stroke. CONCLUSIONS: Smoking actually represents a remarkable
burden of avoidable deaths in Spain. Smoking-attributable mortality appears to
continue increasing in the last years
Keywords: aged/attributable risk/cancer/death/disease/diseases/heart/heart
disease/ischemic/ischemic heart disease/lung
cancer/mortality/POPULATION/prevalence/smoking/Spain/stroke/tobacco
Rubio, P.P., Gaju, R.T., Alcala, E.N. and Alenta, H.P. (2002), Cost-effectiveness of
hypertension treatment in Catalonia (Spain). Medicina Clinica, 118 (6), 211-216.
Abstract: BACKGROUND: We assessed the cost-effectiveness of pharmacological
treatments for hypertension to prevent coronary heart disease and stroke in
Catalonia (Spain). METHODS: Cost- effectiveness was measured as the cost in
Spanish Ptas per life year gained (LYG) in 1998 in individuals aged 40 to 69
years with moderate/severe hypertension ( greater than or equal to 105 mmHg)
and mild hypertension (95-104 mmHg). We evaluated hydrochlorothiazide
(diuretic), propranolol (beta-blocker), nifedipine (calcium antagonist), captopril
(angiotensin- converting-enzyme inhibitor) and prazosin (alpha-adrenergic
blocker). RESULTS: Cost-effectiveness ranged from 706,100 to 446,780 ptas.
per LYG in men and from 635,100 to 810,270 ptas. per LYG in women with
moderate/severe hypertension and from 108,770 to 682,460 ptas. per LYG in
men and from 101,000 to 12,699,000 ptas. per LYG in women with mild
hypertension. Incremental cost-effectiveness analysis showed that
hydrochlorothiazide and propranolol were the most cost- effective treatments in
individuals with moderate/severe hypertension while hydrochlorothiazide and
nifedipine were most cost-effective in those with mild hypertension.
CONCLUSION: In this study, greatest-to-lowest cost-effectiveness of assessed
treatments was as follows: hydrochlorohiazide, propranolol, nifedipine, prazosin
and captopril in moderate/severe hypertension and hydrochlorothiazide,
nifedipine, propranolol, prazosin and captopril in mild hypertension
Keywords: aged/angiotensin/angiotensin converting enzyme
inhibitor/beta-blocker/blocker/BLOOD- PRESSURE/calcium/calcium
antagonist/captopril/cardiovascular disease prevention/COA REDUCTASE
INHIBITORS/coronary heart disease/CORONARY HEART-DISEASE/cost/cost
effectiveness/cost-effectiveness/cost-effectiveness analysis/disease/evaluative
studies/heart/heart disease/hydrochlorothiazide/hypertension/hypertension
treatment/men/PREVENTION/propranolol/Spain/stroke/THERAPY/treatment/w
omen
Martinez, V.B., Blasco, P.J.M., Juanatey, J.R.G., Ezquerra, E.A., Acuna, J.M.G.,
Maqueda, I.G., Garcia, A.F., Parra, R.V. and Ortega, J.A.R. (2002),
Antithrombotic treatment in hypertensive patients with chronic atrial fibrillation.
CARDIOTENS 99 study. Medicina Clinica, 118 (9), 327-331.
Abstract: BACKGROUND: Our main goals were to know the actual degree of oral
anticoagulation and antiaggregation in hypertensive patients with atrial
fibrillation in the daily clinical practice in Spain and to analyze any differences
between primary care physicians and cardiologists. PATIENTS AND METHOD:
32,051 outpatients attended the same day by 1,159 physicians (21% cardiologists)
were prospectively included in a database taking into account a history of
hypertension and atrial fibrillation, demographic data and ongoing treatments.
RESULTS: Hypertension was detected in 10,555 patients and 999 of them had
both hypertension and atrial fibrillation (9.46%: 435 males [44%] and 564
females [56%]). 53% patients were attended by primary care physicians and the
rest by cardiologists. 33% of hypertensive patients with atrial fibrillation were on
oral anticoagulation: 41% of them attended by cardiologists and 26% by primary
care physicians (p 80 years-old) were found
to receive less anticoagulants and more antiaggregants both in primary health-
care and cardiology health-care
Keywords: age/aged/anticoagulants/anticoagulation/ANTICOAGULATION/atrial/atrial
fibrillation/cardiology/chronic/chronic atrial fibrillation/clinical
practice/elderly/elderly
patients/FAILURE/fibrillation/GUIDELINES/health/health
care/history/hypertension/NATIONAL PATTERNS/oral
anticoagulation/PATIENT/prevalence/PREVENTION/primary/primary
care/primary health care/Spain/STROKE/THERAPY/treatment/WARFARIN
USE
Gutierrez, P.C., Bejarano, J.M.L., Juanatey, J.R.G., Nunez, A.G., Fernandez, F.J.P. and
Sarda, A.N. (2003), Different approach in high-cardiovascular-risk women,
compared to men: a multidisciplinary study-Spain. Medicina Clinica, 120 (12),
451-455.
Abstract: Background and objective: There is a broad range of cardiovascular high-risk
patients, who might benefit from general and pharmacological interventions. The
aim of the study was to evaluate the differences in the characteristics of cv risk in
women with respect to men, and if there are differences in the treatment between
men and women. Patients and method: We collected the data from cv high-risk
patients from cardiology, internal medicine, neurology, endocrinology and
primary care. We considered high-risk patients those with coronary artery
disease, stroke, peripheral vascular disease, or diabetes plus one or more
additional risk factor. Parameters recorded were age, gender, glucose, glycated
haemoglobin, blood pressure, smoking habit, lipid profile, microalbuminuria, and
pharmacological treatment. We performed an age-adjusted, multivariate analysis.
Results: Out of 5,207 patients, 1,307 were considered as high risk (56.1% Men
and 43.9% Women). The median age was 67.3 Years (66.1 Y men, 68.8 Y
women). In the coronary heart disease group, women received less antiplatelet
therapy (69.4% Vs 80.4%; Or = 1.592) And less cholesterol- lowering agents
(Despite higher prevalence of hypercholesterolemia, 52.8% Vs 39.1%). In
diabetics patients with additional risk factors, women received less antiplatelet
therapy (42.9% Vs 36.6%, Or = 1.486) And lipid-lowering therapy (53.5% Vs
41.4%), And more diuretics (41.4% Vs 26.5%; Or = 0.588). Conclusions: There
is a different profile of cv risk in women, with more diabetes and less smoking
habit. In this study, a trend to less treat high-risk women with respect to high-risk
men is observed
Keywords: age/antiplatelet/antiplatelet therapy/approach/blood
pressure/cardiology/cardiovascular/cardiovascular diseases/cholesterol/coronary
artery disease/coronary heart disease/diabetes/DISEASE/diuretics/drug
therapy/gender/glucose/heart/heart disease/HEART-FAILURE/high
risk/hypercholesterolemia/internal/internal medicine/lipid lowering/lipid
lowering therapy/lipid profile/lipid-lowering/men/microalbuminuria/multivariate
analysis/neurology/peripheral vascular disease/pharmacological
treatment/prevalence/PREVENTION/primary/primary care/RANDOMIZED
TRIALS/risk/risk factor/risk factors/sex
factors/smoking/Spain/stroke/therapy/treatment/vascular/vascular disease/women
Armstrong, L.E., Epstein, Y., Greenleaf, J.E., Haymes, E.M., Hubbard, R.W., Roberts,
W.O. and Thompson, P.D. (1996), Heat and cold illnesses during distance
running. Medicine and Science in Sports and Exercise, 28 (12), R1-R10.
Abstract: Many recreational and elite runners participate in distance races each year.
When these events are conducted in hot or cold conditions, the risk of
environmental illness increases. However, exertional hyperthermia, hypothermia,
dehydration, and other related problems may be minimized with pre-event
education and preparation. This position stand provides recommendations for the
medical director and other race officials in the following areas: scheduling;
organizing personnel, facilities, supplies, equipment, and communication;
providing competitor education; measuring environmental stress; providing
fluids; and avoiding potential legal liabilities. This document also describes the
predisposing conditions, recognition, and treatment of the four most common
environmental illnesses: heat exhaustion, heatstroke, hypothermia, and frostbite.
The objectives of this position stand are: 1) To educate distance running event
officials and participants about the most common forms of environmental illness
including predisposing conditions, warning signs, susceptibility, and incidence
reduction. 2) To advise race officials of their legal responsibilities and potential
Liability with regard to event safety and injury prevention. 3) To recommend that
race officials consult local weather archives and plan events at times likely to be
of low environmental stress to minimize detrimental effects on participants. 4)
To encourage race officials to warn participants about environmental stress on
race day and its implications for heat and cold illness. 5) To inform race officials
of preventive actions that may reduce debilitation and environmental illness. 6)
To describe the personnel, equipment, and supplies necessary to reduce and treat
cases of collapse and environmental illness
Keywords: ACCLIMATION/EXERCISE/EXERTIONAL
HEATSTROKE/HYPERTHERMIA/INJURY/PHYSICAL-FITNESS/RESPONS
ES/RUNNERS/STROKE/TOLERANCE
Shephard, R.J. (2001), Absolute versus relative intensity of physical activity in a
dose-response context. Medicine and Science in Sports and Exercise, 33 (6),
S400-S418.
Abstract: Purpose: To examine the importance of relative versus absolute intensities of
physical activity in the context of population health. Methods: A standard
computer-search of the literature was supplemented by review of extensive
personal files. Results: Consensus reports (Category D Evidence) have
commonly recommended moderate rather than hard physical activity in the
context of population health. Much of the available literature provides Category
C Evidence. It has often confounded issues of relative intensity with absolute
intensity or total weekly dose of exercise. In terms of cardiovascular health, there
is some evidence: for a threshold intensity of effort, perhaps as high as 6 METs,
in addition to a minimum volume of physical activity. Decreases in blood
pressure and prevention of stroke seem best achieved by moderate rather than
high relative intensities of physical activity, Many aspects of metabolic health
depend on the total volume of activity; moderate relative intensities of effort are
more effective in mobilizing body fat, but harder relative intensities may help to
increase energy expenditures postexercise. Hard relative intensities seem needed
to augment bone density, but this may reflect an associated increase in volume of
activity. Hard relative intensities of exercise induce a transient
immunosuppression. The optimal intensity of effort, relative or absolute, for
protection against various types of cancer remains unresolved. Acute effects of
exercise on mood state also require further study; long-term benefits seem
associated with a moderate rather than a hard relative intensity of effort.
Conclusions: The importance of relative versus absolute intensity of effort
depends on the desired health outcome, and many issues remain to be resolved.
Progress will depend on more precise epidemiological methods. of assessing
energy expenditures and studies that equate total energy expenditures between
differing relative intensities. There is a need to focus on gains in quality-adjusted
life expectancy
Keywords: ACUTE MYOCARDIAL- INFARCTION/ALL-CAUSE
MORTALITY/assessment of energy expenditure/blood
pressure/cancer/cardiovascular/cardiovascular health/CORONARY
HEART-DISEASE/DENSITY-LIPOPROTEIN CHOLESTEROL/DEPENDENT
DIABETES-MELLITUS/DIFFERENT EXERCISE INTENSITIES/dose of
exercise/EXERCISE/HARVARD ALUMNI HEALTH/health/intensity/life
expectancy/MIDDLE-AGED MEN/outcome/physical
activity/population/population health/POSTEXERCISE OXYGEN-
CONSUMPTION/prevention/protection/PUBLIC-HEALTH
PERSPECTIVE/review/stroke/transient
Kohl, H.W. (2001), Physical activity and cardiovascular disease: evidence for a dose
response. Medicine and Science in Sports and Exercise, 33 (6), S472-S483.
Abstract: Purpose: To summarize and synthesize existing literature providing evidence
of a dose-response relation between physical activity and cardiovascular disease
endpoints. Methods: MEDLINE search of indexed English-language literature
through August 2000. Findings supplemented by existing consensus documents
and other published literature. Only studies with greater than two physical
activity exposure categories were included, and studies not focusing on the
clinical manifestation of the outcome (incidence or mortality) were excluded.
Results: Existing studies were classified by outcome used: all cardiovascular
disease (CVD), coronary (ischemic) heart disease (CHD), and stroke. The vast
majority of the literature in this area has relied on prospective observational
studies and has been conducted in European men or populations of men of
primarily European descent. Follow-up intervals ranged from 3 to 26 yr, and
most studies related a single initial measure of physical activity to the outcome of
interest, sometimes many years in the future. No randomized trials of physical
activity and cardiovascular disease as a clinical outcome exist. Taken together,
the available evidence indicates that cardiovascular disease incidence and
mortality, and specifically ischemic heart disease, are causally related to physical
activity in an inverse, dose-response fashion. These findings have been
demonstrated in a variety of populations and using a variety of physical activity
assessment methods. Contrarily, equivocal evidence for stroke incidence and
mortality prohibits a similar conclusion. No strong evidence for dose-response
relation between physical activity and stroke as a CVD outcome is available.
Conclusion: Physical inactivity is prominent in the causal constellation for
factors predisposing to cardiovascular disease, particularly ischemic heart disease.
Methodologic advances in physical activity assessment; additional studies on
changes in the antecedent variable, physical activity, as it relates to the outcome;
and more studies among women and ethnically diverse populations are needed to
clarify these relations
Keywords: cardiovascular/cardiovascular disease/CHD/consensus/coronary heart
disease/CORONARY HEART-DISEASE/DEATH/disease/disease
incidence/dose response/EXERCISE/FOLLOW- UP/HARVARD ALUMNI
HEALTH/heart/heart disease/incidence/ischemic/ischemic heart
disease/ISCHEMIC STROKE RISK/LEISURE-TIME/men/MIDDLE-AGED
MEN/MORTALITY/observational studies/outcome/physical activity/PRIMARY
PREVENTION/randomized/randomized trials/stroke/stroke
incidence/trials/WOMEN
Oja, P. (2001), Dose response between total volume of physical activity and health and
fitness. Medicine and Science in Sports and Exercise, 33 (6), S428-S437.
Abstract: Purpose: Studies published in 1990s were evaluated for the possible dose
response between the total volume of physic:al activity and the fitness and health
outcomes, and for the characteristics of the dose response relations. Methods:
Nineteen observational studies and 15 randomized trials were identified. The
scope of the studies was on primary prevention among inactive, healthy,
middle-aged and elderly men and women. MET-min.wk(-1) was used as the
primary volume measure. No studies addressing specifically the volume-outcome
dose response were identified. Results: The cross-sectional and follow-up studies
suggested a graded dose response of the volume of physical activity with
all-cause mortality, stroke and several coronary heart disease risk factors. The
benefits were apparent among both men and women. Nonrandomized and
uncontrolled randomized trials exhibited no clear dose response relationship,
whereas the randomized controlled trials showed a crude graded dose response
between the exercise volume as measured by MET-min.wk(-1) and VO2max but
not between volume and disease risk factors. An apparently clearer dose
response was seen between the intensity of physical activity and the VO2max
response. These data do not allow for quantitative characterization of the
observed dose response relations between physical activity volume and health
and fitness. Conclusion: Fairly strong evidence indicates a crude dose response
between the total volume of weekly physical activity and cardiorespiratory
fitness but only weak evidence for a dose response of activity volume and health
measurers
Keywords: all-cause mortality/CARDIORESPIRATORY
FITNESS/CARDIOVASCULAR- DISEASE/coronary heart
disease/CORONARY HEART-DISEASE/disease/disease
risk/elderly/ENERGY-EXPENDITURE/EXERCISE/EXERCISE
INTENSITY/Finland/HARVARD ALUMNI HEALTH/health/heart/heart
disease/intensity/LIPOPROTEIN CHOLESTEROL
LEVELS/men/MET-minutes/middle-aged men/MIDDLE-AGED
MEN/mortality/observational studies/physical
activity/prevention/primary/primary prevention/randomized/randomized
controlled trials/RANDOMIZED TRIAL/randomized trials/risk/risk
factors/RISK-FACTORS/stroke/trials/women
Do Lee, C. and Blair, S.N. (2002), Cardiorespiratory fitness and stroke mortality in men.
Medicine and Science in Sports and Exercise, 34 (4), 592-595.
Abstract: Purpose: We examined the association between cardiorespiratory fitness and
stroke mortality in men. Methods: This is a prospective cohort study. We
followed 16,878 men, ages 40-87 yr, who had a complete medical evaluation
including a maximal treadmill exercise test and self-reported health habits, There
were 32 stroke deaths during an average of 10 yr of follow-up (167,961 man-yr).
Results: After adjustment for age and examination year, there was an inverse
association between cardiorespiratory fitness and stroke mortality (P = 0.005 for
trend). This association remained after further adjustment for cigarette smoking,
alcohol intake, body mass index, hypertension, diabetes mellitus, and parental
history of coronary heart disease (P = 0.02 for trend). High-fit men (most fit 40%)
had 68% (95% CI: 0.12, 0.82) and moderate-fit men had 63% (95% CI: 0.17,
0.83) lower risk of stroke mortality when compared with low-fit men (least fit
20%). respectively. Conclusions: Moderate and high levels of cardiorespiratory
fitness were associated with lower risk of stroke mortality in men in the Aerobics
Center Longitudinal study population
Keywords: age/alcohol/ALL-CAUSE MORTALITY/body mass index/cigarette
smoking/cohort study/coronary heart disease/CORONARY
HEART-DISEASE/diabetes/diabetes mellitus/disease/disease
prevention/epidemiology/evaluation/EXERCISE/exercise
test/FOLLOW-UP/health/HEALTHY/heart/heart
disease/history/hypertension/medical/men/mortality/OVERWEIGHT
MEN/physical activity/PHYSICAL-ACTIVITY/population/prospective cohort
study/risk/RISK-FACTORS/smoking/stroke/stroke deaths/stroke
mortality/TIME/WOMEN
LeMaster, J.W., Reiber, G.E., Smith, D.G., Heagerty, P.J. and Wallace, C. (2003), Daily
weight-bearing activity does not increase the risk of diabetic foot ulcers.
Medicine and Science in Sports and Exercise, 35 (7), 1093-1099.
Abstract: Daily Weight-Bearing Activity Does Not Increase the Risk of Diabetic Foot
Ulcers. Med. Sci. Sports Exerc., Vol. 35, No. 7, pp. 1093-1099, 2003. Purpose:
This study had two purposes: to identify characteristics associated with
participants' usual weight-bearing activity, and to determine whether weight-
bearing activity increased the risk of foot ulcer among persons with diabetes and
prior foot ulcer. Methods: We conducted a prospective cohort study of 400
participants with diabetes and a prior history of foot ulcer. Participants were from
the Veterans Affairs Puget Sound Health Care System and Group Health
Cooperative in Seattle, WA, and were originally assembled for a randomized
controlled trial of footwear. Feet were examined and demographic and health
history information was collected at enrollment. Daily weight-bearing activity
was reported at enrollment and every 17 wk thereafter for 2 yr. All incident foot
lesions were recorded. Results: Weight-bearing activity was significantly higher
among women. Activity was lower among participants who were older,
unmarried, or who had a history of congestive heart failure, respiratory disease,
stroke, or depression. Activity decreased significantly over the study period but
remained similar in those with or without insensate feet. After adjustment for
foot-related and health- status characteristics, moderately active participants
(4.5-7.4 weight-bearing h(.)d(-1)) were at substantially but nonsignificantly
reduced risk of foot ulcer compared with "least active" participants (2% per year), we observed a huge variation of the proportion of
patients classified at high risk (from 0 to 17%). There was a poor agreement
between risk models and the decision to treat taken by the physician. These
results suggest that risk-based guidelines should be validated before their
diffusion
Keywords: age/BLOOD-PRESSURE/cardiovascular/cardiovascular
disease/cardiovascular risk/CORONARY
HEART-DISEASE/evaluation/FOLLOW-UP/FRAMINGHAM/GUIDELINES/h
igh
risk/hypercholesterolemia/hypertension/management/population/prediction/PRI
MARY PREVENTION/PROBABILITY/PROFESSIONALS/PROFILE/risk/risk
models/statistical/STROKE/use/World Health Organization
Collen, M.F. (2002), Vicissitudes of preventive medicine and a new challenge. Methods
of Information in Medicine, 41 (3), 224-229.
Abstract: Objectives. Significant changes in mortality patterns are part of the changing
population demographics. This paper explores their implications for health
evaluation and screening programs. Methods. A review of selected age-adjusted
mortality rates from the National Vital Statistics Reports of the USA was
undertaken and their change over the lost five decades analyzed. Results: The
review shows a continued decline in mortality rates from leading causes of death,
such as heart disease, cancer, stroke, pneumonia and influenza, and a sharp rise
in the death rates from Alzheimer's disease. Available means for detection of
Alzeimer's disease are summarized. Conclusion: Given the emerging possibilities
for the treatment and prevention of the progression of Alzheimer's disease, tests
for early detection of Alzheimer's should be included in health screening
examinations
Keywords: AGE/Alzheimer's
disease/ALZHEIMER-DISEASE/cancer/causes/COGNITIVE
IMPAIRMENT/COMMUNITY/death/DEMENTIA/dementia/detection/disease/e
valuation/FOLLOW-UP/health/heart/heart
disease/METAANALYSIS/mortality/PLACEBO-CONTROLLED
TRIAL/pneumonia/POPULATION/PREVALENCE/prevention/preventive
medicine/review/screening/stroke/treatment/vital statistics
Cooper, J.K. (1997), Preventing heat injury: Military versus civilian perspective.
Military Medicine, 162 (1), 55-58.
Abstract: Guidelines for preventing heat injury (HI) among military personnel are not
directly applicable to civilian personnel. Military guidelines call for relatively
large volumes of prophylactic water consumption and physical activity
limitations depending on the met bulb globe temperature. However, in civilian
populations, there is an increased prevalence of HI risk factors: older age,
medication use, especially anticholinergic and psychotropic medications, obesity,
previous HI, and skin disorders. Although dehydration is a major contributor to
HI in military situations, it is unlikely in classical heat stroke among civilians.
Civilian guidelines are based on the heat index, Activity levels must be restricted
more for civilians, and prophylactic water consumption (beyond replacing loss
from sweat) is not necessary. This review discusses the pathophysiology of heat
injury, contrasts the military and civilian approach to prevention of HI, and
describes appropriate field intervention for HI
Keywords: age/CARE/EXERCISE/FLUID/guidelines/heat
stroke/HYPERTHERMIA/ILLNESS/obesity/physical
activity/POLICIES/POLICY/prevention/PRIMARY-CARE/risk/risk
factors/stroke/STROKE PATIENTS
Linz, W., Wiemer, G., Schaper, J., Zimmermann, R., Nagasawa, K., Gohlke, P., Unger,
T. and Scholkens, B.A. (1995), Angiotensin-Converting Enzyme-Inhibitors,
Left-Ventricular Hypertrophy and Fibrosis. Molecular and Cellular Biochemistry,
147 (1-2), 89-97.
Abstract: From pharmacological investigations and clinical studies, it is known that
angiotensin converting enzyme (ACE) inhibitors exhibit additional local actions,
which are not related to hemodynamic changes and which cannot be explained
only by interference with the renin angiotensin system (RAS) by means of an
inhibition of angiotensin II (ANG II) formation. Since ACE is identical to
kininase II, which inactivates the nonapeptide bradykinin (BK) and related kinins,
potentiation of kinins might be responsible for these additional effects of ACE
inhibitors. a) In rats made hypertensive by aortic banding, the effect of ramipril
in left ventricular hypertrophy (LVH) was investigated. Ramipril in the
antihypertensive dose of 1 mg/kg/day for 6 weeks prevented the increase in
blood pressure and the development of LVH. The low dose of ramipril (10 mu
g/kg/day for 6 weeks) had no effect on the increase in brood pressure or on
plasma ACE activity but also prevented LVH after aortic banding. The
antihypertrophic effect of the higher and lower doses of ramipril, as well as the
antihypertensive action of the higher dose of ramipril, was abolished by
coadministration of the kinin receptor antagonist icatibant. In the regression
study the antihypertrophic actions of ramipril were not blocked by the kinin
receptor antagonist. Chronic administration of BK had similar beneficial effects
in a prevention study which were abolished by icatibant and N-G-
nitro-L-arginine (L-NNA). In a one year study the high and low dose of ramipril
prevented LVH and fibrosis. Ramipril had an early direct effect in hypertensive
rats on the mRNA expression for myocardial collagen I and III, unrelated to its
blood pressure lowering effect. b) In spontaneously hypertensive rats (SHR) the
preventive effects of chronic treatment with ramipril on myocardial LVH was
investigated. SHR were treated in utero and, subsequently, up to 20 weeks of age
with a high dose (1 mg/kg/day) or with a low dose (10 mu g/kg/day) of ramipril.
Animals on a high dose remained normotensive, whereas those on a low dose
developed hypertension in parallel to vehicle- treated controls. Left ventricular
mass was reduced only in high-dose-treated, but not in low-dose treated animals
but both groups revealed an increase in myocardial capillary length density. In
SHR stroke prone animals cardiac function and metabolism was improved by
ramipril and abolished by coadministration of icatibant. In contrast to the
prevention studies, in a regression study ramipril reduced cardiac hypertrophy
also by low dose treatment. c) In rats chronic nitric oxide (NO) inhibition by
N-G-nitro-L-arginine-methyl ester (L-NAME) treatment induced hypertension
and LVH. Ramipril protected against blood pressure increase and partially
against myocardial hypertrophy. These experimental findings in different models
of LVH characterise ACE inhibitors as remarkable antihypertrophic and
antifibrotic substances
Keywords: ACE INHIBITORS/angiotensin/angiotensin II/AUTOCRINE- PARACRINE
ACTIONS/blood pressure/BRADYKININ/CARDIAC-
HYPERTROPHY/development/ENDOTHELIAL-CELLS/FIBRILLAR
COLLAGEN/FIBROSIS/formation/GUANOSINE-MONOPHOSPHATE/hypert
ension/HYPERTENSIVE RATS/hypertrophy/LEFT VENTRICULAR
HYPERTROPHY/MYOCARDIAL FIBROSIS/NITRIC-OXIDE
SYNTHASE/PRESSURE OVERLOAD
HYPERTROPHY/prevention/PROSTACYCLIN/RAMIPRIL/RAT
LEFT-VENTRICLE/rats/SHR/SMOOTH-MUSCLE CELLS/stroke/treatment
Hirano, T., Yamori, Y., Kanai, N., Umetsu, T. and Nishio, S. (1992), The Effects of
Beraprost Na, A Stable Prostacyclin Analog, on Animal-Models of Stroke.
Molecular and Chemical Neuropathology, 17 (1), 91-102.
Abstract: We evaluated the effects of beraprost Na (Sodium (+/-)- (1R*,2R*,
3aS*,8bS*)-2,3,3a,8b-tetrahydro-2-hydroxy-1-[(E)-(3S
*)-3-hydroxy-4-methyl-1-octen-6-ynyl]-1H- cyclopenta[b]benzofuran-5-butylate,
beraprost), a stable and orally active prostacyclin (PGI2) analog with potent
antiplatelet and vasodilating properties, on two stroke models, namely sudden
death induced by arachidonate (AA) in rabbits and spontaneeous stroke in
stroke-prone spontaneously hypertensive rats (SHRSP). In the AA-induced
sudden death model, 30 min after beraprost administration (1 or 3 mg/kg, po),
AA was injected into the rabbit internal carotid artery, and incidence of
convulsion and sudden death were assessed. Beraprost decreased both incidence
of convulsion and mortality of rabbits. In SHRSP, orally administered beraprost
(100-mu-g/kg, twice a day from 56-385 d of age) improved survival rate and
decreased incidence of stroke. Preventive effects of beraprost on the two stroke
models may have been caused mainly by the improvement of cerebral circulation.
These results indicate that beraprost may have potential in the treatment and/or
prevention of the cerebral circulatory disorders
Keywords: ANTIPLATELET EFFECT/ARACHIDONATE-INDUCED SUDDEN
DEATH/BERAPROST
NA/CATS/CELLS/CEREBRAL-ISCHEMIA/INVITRO/PLATELETS/PRONE/
PROSTACYCLIN ANALOG/RATS/SHRSP/SODIUM/STROKE
MODELS/TICLOPIDINE/TRK-100/VASODILATION
Waters, C.M. (1996), Mechanisms of neuronal cell death - An overview. Molecular and
Chemical Neuropathology, 28 (1-3), 145-151.
Abstract: Neuronal cell death is both a vital component of the embryogenesis of the
nervous system and forms the basis of all neurodegenerative diseases. This
overview explores the fundamental mechanisms underlying neuronal cell death
at a cellular and molecular level. The significance of the mode of neuronal death
is compared with respect to physiological (developmental) and pathological
neuronal loss
Keywords: Alzheimer disease/apoptosis/APOPTOSIS/BCL-2
PROTOONCOGENE/C-JUN/development/diseases/DNA/EXPRESSION/GENE
CED-3/glutamate/ICE bcl-2/interleukin converting
enzyme/necrosis/neurons/Parkinson
disease/PREVENTION/PROTEIN/stroke/SYMPATHETIC
NEURONS/TRANSGENIC MICE/trophic factors
Halperin, J.L. and Rothlauf, E.B. (1993), Stroke Prevention in Atrial-Fibrillation. Mount
Sinai Journal of Medicine, 60 (4), 289-294.
Abstract: Atrial fibrillation (AF) is a risk factor for ischemic stroke. In randomized trials,
AF raised the risk of stroke nearly sixfold, cumulating in a 35% risk over a
lifetime. Anticoagulation with warfarin reduces the danger of ischemic stroke,
but carries hemorrhagic risks, making this agent unsuitable for treating many
patients. Platelet inhibitor therapy with aspirin was highly effective for patients
younger than 75 years of age in one study, but the reason for lower efficacy in
older individuals is perplexing. These trials support a thrombotic mechanism for
most strokes in patients with AF, but leave physicians in a quandary as to
selection of optimum prophylaxis. Secondary analysis of patients given placebo
identified predictors of thromboembolism, including a history of hypertension,
congestive heart failure, and prior stroke or transient ischemic attack, and
echocardiographic findings of left ventricular dysfunction or left atrial
enlargement. The absence of these risk factors selects a fairly large subgroup of
AF patients at comparatively low risk of stroke, for whom the danger and
inconvenience of chronic anticoagulation may not be warranted. It is becoming
clear that specific clinical and echocardiographic features allow individualized
antithrombotic approaches within the broad category of patients with AF, to
enhance therapeutic benefit while minimizing hemorrhagic risk
Keywords: ANTICOAGULATION/THERAPY
Nassisi, D. (1997), Acute stroke: Emergency management and future interventions.
Mount Sinai Journal of Medicine, 64 (4-5), 241-248.
Abstract: Stroke is a major cause of death and disability. Early intervention in the
emergency department has become increasingly important in improving stroke
outcome as effective therapies are used. Current emergency evaluation and
management of ischemic (thromboembolic) stroke, intracerebral hemorrhage,
cerebellar stroke, subarachnoid hemorrhage, and transient ischemic attacks is
discussed. Recent developments in stroke therapeutics including thrombolytics,
low-molecular-weight heparins, excitatory amino acid antagonists, free radical
scavengers, gangliosides, and leukocyte inhibitors are reviewed
Keywords: ACUTE ISCHEMIC
STROKE/CIRCULATION/EMERGENCY/evaluation/EXPERIENCE/hemorrha
ge/INFARCTION/intracerebral hemorrhage/ischemic/MOLECULAR-WEIGHT
HEPARIN/NEW-YORK/PREVENTION/PROGRESSION/stroke/stroke
outcome/SUBARACHNOID HEMORRHAGE/subarachnoid
hemorrhage/SURGERY/THROMBOLYTIC
THERAPY/thrombolytics/transient/transient ischemic attacks/TRIAL
Tuhrim, S. (2002), Management of stroke and transient ischemic attack. Mount Sinai
Journal of Medicine, 69 (3), 121-130.
Abstract: Stroke is a major cause of death and disability. The resulting burden on society
continues to grow, despite recent advances in acute stroke therapy. Thrombolysis
reduces stroke morbidity but is only applicable to a small percentage of stroke
patients. Acute stroke units, which allow for the greatest overall improvement in
outcome, provide the best facilities for acute intervention. Despite recent
advances in acute management, such as endarterectomy and anticoagulation,
primary and secondary preventive measures to control stroke risk factors, along
with appropriate specific interventions, are the key to reducing the overall burden
of stroke
Keywords: acute/acute stroke/acute stroke therapy/anticoagulation/ASPIRIN/ATRIAL-
FIBRILLATION/BLOOD-PRESSURE/cause of
death/CHOLESTEROL/CIRCULATION/control/CORONARY
HEART-DISEASE/death/disability/endarterectomy/FRAMINGHAM/HIGH-RIS
K PATIENTS/ischemic/management/MOLECULAR-WEIGHT
HEPARIN/morbidity/MORTALITY/NEW-YORK/outcome/prevention/primary/
risk/risk factors/secondary/SECONDARY PREVENTION/stroke/stroke
patients/stroke units/therapy/transient/transient ischemic attack/treatment
Elkind, M.S.V. (2003), Stroke in the elderly. Mount Sinai Journal of Medicine, 70 (1),
27-37.
Abstract: Stroke is one of the oldest but least understood diseases, and it is one of the
major public health problems facing the elderly. Recent epidemiological
investigations have found that the incidence of stroke has been underestimated
by about 50%, and that the burden of disease is highest in minority populations.
Recent clinical and basic neuroscience research indicates that stroke is neither
unpredictable nor irreversible. Many risk factors for stroke are readily
identifiable, and evidence-based treatment may be used to reduce the likelihood
of stroke among those at risk. Rapid diagnosis and evaluation of stroke and
transient ischemic attack and their treatment, including surgery, anticoagulation,
antiplatelet and other medical therapies, reduce the chance of recurrence. More
aggressive treatment of blood pressure, even among patients who are not
necessarily hypertensive, may also reduce the risk of future strokes. Once
ischernic stroke has occurred, emergent therapy using thrombolysis may
significantly reduce disability, even among the elderly. This review presents an
update on definitions of stroke and its subtypes, stroke epidemiology, and the
results of recent studies of stroke prevention and acute treatment
Keywords: acute/ACUTE ISCHEMIC STROKE/acute
treatment/ALTEPLASE/anticoagulation/antiplatelet/ASPIRIN/ATRIAL-FIBRIL
LATION/blood pressure/cerebrovascular disorders/CIRCULATION/clinical
trials/diagnosis/disability/disease/diseases/elderly/epidemiology/evaluation/healt
h/HIGH-RISK PATIENTS/incidence/ischemic/LOBAR INTRACEREBRAL
HEMORRHAGE/medical/NEW-YORK/PLASMINOGEN-
ACTIVATOR/PREVENTION/public health/RANDOMIZED CONTROLLED
TRIAL/recurrence/research/results/review/risk/risk factors/risk factors for
stroke/SECULAR TRENDS/stroke/stroke
prevention/surgery/therapy/thrombolysis/transient/transient ischemic
attack/treatment/USA
Weisburger, J.H. (1998), Worldwide prevention of cancer and other chronic diseases
based on knowledge of mechanisms. Mutation Research-Fundamental and
Molecular Mechanisms of Mutagenesis, 402 (1-2), 331-337.
Abstract: International research, particularly as part of US/Japan programs, has led to
major advances in knowledge of causes of heart disease, stroke, many types of
cancer and diabetes, showing that individual lifestyle is associated with these
diseases. In Japan, a major health problem is high blood pressure and stroke, and
cancer of the stomach, from excessive use of salt and salted, pickled foods, and
the relative low intake of protective fruits and vegetables. We identified a likely
gastric carcinogen, 2-chloro-4-methylthiobutanoate, in salted, pickled fish. In the
Western world, heart disease and cancer of the breast, colon, rectum, prostate,
pancreas, ovary and endometrium relate to a nutritional tradition too high in total
fat and fried or broiled meats, and too low in fiber, vegetables and fruits. The
cooked meats contain genotoxic chemicals, heterocyclic amines, causative
elements in heart disease and the nutritionally linked cancers. Decreasing total
fat intake, from 40 to 20% of calories and a greater use of starches such as rice,
pasta, potatoes and whole grain bread, as well as daily intake of five to nine
vegetables and fruits would be beneficial. Adults should consume 2.5 l of fluids
per day. Green or black tea and fruit juices have health promoting properties.
Regular exercise contributes to good health, and to the avoidance of obesity, a
major problem in the USA and of increasing importance in Japan. Avoidance of
a risky lifestyle would likely prevent diseases important not only for the
individual and his family, but with major impact in lowering medical care costs.
Tobacco and cigarette use, particularly on a Western diet, involve a high risk of
heart attacks, and cancers of the lung, pancreas, kidney, urinary bladder, and
cervix, accounting for 35% of medical care expenditures. (C) 1998 Elsevier
Science B.V. All rights reserved
Keywords: 2-chloro-4-methylthiobutanoate/2-CHLORO-4-METHYLTHIOBUTANOIC
ACID/blood pressure/cancer prevention/cardiovascular
disease/costs/diabetes/diet/diseases/exercise/fats/fiber/FISH/fruit/FRUIT/health/h
eart/heterocyclic amine/high blood
pressure/knowledge/lifestyle/obesity/prevention/risk/salt/stroke/tea/tobacco/vege
table
Kawasaki-Yatsugi, S., Ichiki, C., Yatsugi, S., Shimizu-Sasamata, M. and Yamaguchi, T.
(1998), YM90K, an AMPA receptor antagonist, protects against ischemic
damage caused by permanent and transient middle cerebral artery occlusion in
rats. Naunyn-Schmiedebergs Archives of Pharmacology , 358 (5), 586-591.
Abstract: The neuroprotective effect of YM90K, a potent AMPA receptor antagonist,
was examined in rats with permanent and transient occlusion of middle cerebral
artery (MCA) using intraluminal suture occlusion method. In rats with permanent
MCA occlusions, two types of occluders were used to compare the efficacy of
YM90K. When a 4-0 (diameter: 0.19 mm) suture was used, YM90K (20 mg
kg(-1) h(-1) i.v. infusion for 4 h) significantly reduced infarct volume (P 50%) in elderly men and women (60-79 years) was
10.5 and 5.5%. In nonstenotic carotid artery disease the lumen diameter turned
out to be a useful indirect measure of the vascular status
Keywords: aged/atherosclerosis/carotid/CAROTID
ATHEROSCLEROSIS/development/DISEASE/elderly/POPULATION
STUDIES/PREVALENCE/RISK/ULTRASOUND/vascular/women
Foulkes, M.A., Sacco, R.L., Mohr, J.P., Hier, D.B., Price, T.R. and Wolfe, P.A. (1994),
Parametric Modeling of Stroke Recurrence. Neuroepidemiology, 13 (1-2), 19-27.
Abstract: Stroke recurrence has been investigated primarily with respect to prognostic
factors predictive of recurrence. Several parametric functions are considered in
modeling the distribution of ischemic stroke recurrences recorded within the
Stroke Data Bank. A linear hazard function is shown to be the best-fitting
function among those considered. This method of parametric modeling may lead
to a more informed approach to treatment of ischemic stroke and secondary
prevention and may enhance future investigations of prognostic factors as well
Keywords: DATA-BANK/INFARCTION/ISCHEMIC STROKE/MATHEMATICAL
MODELING/prevention/RECURRENCE/RISK/secondary
prevention/stroke/treatment
Woo, J., Ho, S.C., Lau, S., Lau, J. and Yuen, Y.K. (1994), Prevalence of Cognitive
Impairment and Associated Factors Among Elderly Hong-Kong Chinese Aged
70 Years and Over. Neuroepidemiology, 13 (1-2), 50-58.
Abstract: The prevalence of cognitive impairment was determined in a random age- and
sex-stratified sample of 2,011 elderly Hong Kong Chinese, aged 70 years and
over, consisting of subjects living in the community and in institutions. The
Information/ Orientation Section of the Clifton Assessment Procedure was used
as the screening instrument using a cutoff point of 7. The overall age-adjusted
prevalence was 5% for men and 22% for women, and 15% for both sexes
combined. Univariate analysis identified the following associated factors in order
of magnitude of the odds ratio: age; history of Parkinson's disease; functional
disability; female sex; low educational level; low social class; history of stroke,
and low monthly income. Other diseases, such as heart disease, hypertension,
chronic lung diseases or diabetes, were not associated factors. In multivariate
analysis, all the above factors remained significant with the exception of a
history of stroke. The prevalence figures are comparable to other Caucasian and
Chinese studies, and the associated factors identified suggest that there may be
room for prevention
Keywords: aged/ALZHEIMERS-DISEASE/CHINESE/COGNITIVE
IMPAIRMENT/COMMUNITY/DEMENTIA/diseases/ELDERLY/HEALTH/he
art/history/hypertension/PEOPLE/prevention/RISK FACTORS/stroke/TOTAL
POPULATION/women
Castillon, P.G., Artalejo, F.R., Banegas, F.B., Guallar, E. and Calero, J.D. (1997),
Cerebrovascular disease mortality in Spain, 1955-1992: An age- period-cohort
analysis. Neuroepidemiology, 16 (3), 116-123.
Abstract: The purpose of this study was to assess the contributions of period and birth
cohort effects to changes in cerebrovascular disease (CVD) mortality in Spain
over the period 1955-1992. Poisson regression models were fitted to age- and
sex-specific CVD mortality rates obtained from National Vital Statistics, In the
period 1955-1975, CVD mortality remained stable, In the period 1975-1992:
CVD mortality declined by 54% (rate ratio, RR: 0.46; 95% confidence interval,
Cl: 0.43-0.49) in males and 62% (RR: 0.38; 95% Cl: 0.34-0.42) in females, The
cohort effect was very small up to the generation born in 1905, moving clearly
downward thereafter. CVD mortality for subjects born in the period 1945-1949
was lower than for those born in the period 1905-1909 by 68% (RR: 0.32; 95%
Cl: 0.16-0.63) in males and 82% (RR: 0.18; 95% Cl: 0.07-0.45) in females,
Among the possible partial explanations for these effects are the decline in
ischemic heart disease and rheumatic fever mortality, the drop in salt and alcohol
intake, the reduction in smoking among males and blood pressure among females,
and the widespread use of antihypertensive treatments in Spain over the last 20
years
Keywords: age/age-period-cohort analysis/alcohol/blood
pressure/cerebrovascular/cerebrovascular disease/cerebrovascular disease
mortality/DECLINE/HEART/HYPERTENSION/ischemic/ischemic heart
disease/mortality/PRIMARY PREVENTION/salt/smoking/Spain/STROKE
MORTALITY/TRENDS
Sitzer, M., Skutta, M., Siebler, M., Sitzer, G., Siegrist, J. and Steinmetz, H. (1998),
Modifiable stroke risk factors in volunteers willing to participate in a prevention
program. Neuroepidemiology, 17 (4), 179-187.
Abstract: The current trends in stroke incidence require continued efforts to improve
primary prevention. Compared to large-scale public health approaches, more
limited programs targeting volunteers may offer some advantages. We invited all
12,824 members of a health insurance company program who lived within 50 km
from one of two study sites to participate in a vascular screening program aimed
at reducing modifiable risk factors. 1,837 persons registered and
participated(14.3%, mean age 53 +/- 12 years, 50% men). Using the Framingham
stroke risk profile for persons aged 55 years or above (n = 961, 52.3%), 97 stroke
events can be predicted for this age group within 10 years. The majority of these
97 events will occur in those with mean resting blood pressure values greater
than or equal to 140 mm Hg (systolic) or greater than or equal to 90 mm Hg
(diastolic; 420 persons, mean age 64 +/- 7 years, 60 expected events), or with a
particularly high age- and sex-adjusted risk (288 persons, mean age 68 +/- 7
years, 60 expected events). Our pilot study provides an estimate of the
prevalence of modifiable vascular risk factors among volunteer participants of a
prevention program. Possible benefits of this approach will be investigated in a
second step using a randomized intervention
Keywords: age/aged/atherosclerosis/blood pressure/cardiovascular
diseases/cerebrovascular diseases/CORONARY
HEART-DISEASE/EDUCATION/health/health
education/HEALTH-PROGRAM/hypertension/HYPERTENSION/incidence/IN
TERVENTION/MINNESOTA/NORTH-KARELIA PROJECT/PHYSICAL-
ACTIVITY/prevention/primary prevention/PROBABILITY/program
evaluation/risk/risk factors/stroke/TRENDS/vascular
Chaturvedi, S. (1999), Public health impact of carotid endarterectomy.
Neuroepidemiology, 18 (1), 15-21.
Abstract: Despite the completion of several multi-center clinical trials comparing
medical management and carotid endarterectomy, there is still controversy as to
when carotid endarterectomy is appropriate. The volume of this surgery appears
to be increasing. However, available performance data indicate that the surgical
proficiency required for the clinical trials is not achieved uniformly in actual
practice. Therefore, benefits of carotid endarterectomy, when considered from a
public health perspective, are limited by the following: (1) endarterectomy is an
expensive stroke prevention modality; (2) endarterectomy addresses the needs of
only a relatively small subset of stroke patients, and (3) endarterectomy for
asymptomatic patients, without clearer evidence that these individuals benefit,
may decrease the cost-effectiveness of this surgical procedure
Keywords: carotid/carotid endarterectomy/carotid stenosis/clinical trials/cost
effectiveness/cost-effectiveness/DISEASE/endarterectomy/health/PERFORMA
NCE/prevention/RACE/STENOSIS/STROKE/stroke
prevention/surgery/transient ischemic attack/trials
Abel, G.A., Chen, X., Boden-Albala, B. and Sacco, R.L. (1999), Social readjustment and
ischemic stroke: Lack of an association in a multiethnic population.
Neuroepidemiology, 18 (1), 22-31.
Abstract: Clinical experience has suggested that stressful life events and ongoing
stressful illness, collectively termed 'social readjustment', may precipitate stroke.
We investigated the association between a simple in-office evaluation of such
stressors and stroke in an urban, multiethnic study population. Cases were
patients from the Northern Manhattan Stroke Study with first ischemic stroke;
controls were derived through random digit dialing with n:m matching for age,
gender, and race-ethnicity. Social readjustment was measured through in- person
interview using Amster and Krauss' Geriatric Social Readjustment Rating Scale
(GSRRS), a one-time, 35-item, checklist type weighted questionnaire of stressful
life events occurring in the previous 6 months. Conditional logistic regression
was used to analyze the GSRRS and its quartiles as well as stressful events
subgroups, adjusting for education, hypertension, cardiac disease, diabetes, and
number of weekly visits as a measure of socialization. Six hundred and fifty- five
cases of ischemic stroke and 1,087 controls were utilized. The mean age of the
cases was 69.8 years, with 55.4% women, 51.0% Hispanics, 28.4% blacks, and
19.1% whites. GSRRS scores ranged from 0 to 812; the mean score was 205.5
for the cases and 206.2 for the controls. The analysis showed no association
between stroke and a 20-point increase on the GSRRS (OR = 1.01,95% CI =
0.99-1.01). There was also no effect for the second, third or highest versus lowest
quartile. No association was found in age, gender or race-ethnic subgroups, or
when analyzing negative events, severely threatening events, or ongoing stressful
illnesses separately. While this study does not preclude social readjustment as a
stroke risk factor, it suggests that the one-time assessment often done in the
medical office setting has little relevance for stroke prevention planning
Keywords: CARDIOVASCULAR REACTIVITY/cerebrovascular
disease/CORONARY-ARTERY
DISEASE/education/epidemiology/evaluation/HEART-DISEASE/Hispanics/hyp
ertension/ischemic stroke/life events/LIFE EVENTS/MIDDLE-AGED
MEN/MYOCARDIAL-INFARCTION/prevention/PSYCHOLOGICAL
STRESS/risk/RISK-FACTORS/social readjustment/stress/stroke/stroke
prevention/SUSCEPTIBILITY/women
Nakayama, T., Yokoyama, T., Yoshiike, N., Zaman, M.M., Date, C., Tanaka, H. and
Detels, R. (2000), Population attributable fraction of stroke incidence in middle-
aged and elderly people: Contributions of hypertension, smoking and atrial
fibrillation. Neuroepidemiology, 19 (4), 217-226.
Abstract: We determined the population attributable fraction (PAF) of stroke due to
hypertension (HT), atrial fibrillation (Af) and smoking in a Japanese community.
Residents of Shibata (n = 2,302) who were surveyed initially in 1977 were
followed until 1997. Two hundred and thirteen first strokes occurred. Among
those 40-64 years of age, the risk ratio (RR) of Af was 11.24, followed by
untreated HT (3.61), uncontrolled HT (3.69) and smoking (1.84). The PAFs,
however, were 14.9% for smoking, 13.5% for untreated HT, 8.6% for
uncontrolled HT and 3.6% for Af. Among those over 65 years, only Af was
significant (RR 3.89) and the PAF was 6.0%. Determination of PAFs is also
essential for designing effective stroke prevention programs in communities.
Copyright (C) 2000 S. Karger AG, Basel
Keywords: age/aged/atrial fibrillation/BLOOD-PRESSURE/CEREBRAL
INFARCTION/cerebrovascular
disease/CIGARETTE-SMOKING/community/elderly/epidemiology/essential/fib
rillation/hypertension/incidence/JAPANESE PROVINCIAL CITY/longitudinal
studies/MISCLASSIFICATION/MORTALITY/OLD/population/PREVENTION
/RELATIVE RISK/risk/RISK-FACTORS/smoking/stroke/stroke
incidence/stroke prevention
Voko, Z., Koudstaal, P.J., Bots, M.L., Hofman, A. and Breteler, M.M.B. (2001), Aspirin
use and risk of stroke in the elderly: The Rotterdam Study. Neuroepidemiology,
20 (1), 40-44.
Abstract: The objective of the study was to assess the. association between aspirin use
and the risk of stroke in a population- based study in the elderly. The study was
carried out within the framework of the Rotterdam Study, a prospective
population- based cohort study. In the total study population there was a weak,
nonsignificant association. between aspirin use and the risk of stroke (adjusted
relative risk 1.29, 95% CI 0.91-1.83). Stratification by history of vascular
diseases revealed that aspirin considerably increased the ri sk of first-ever stroke
in subjects free from vascular disease (adjusted relative risk 7.80; 95% CI
1.03-3.13). In persons with vascular disease, no association was observed
between aspirin use and risk of stroke (adjusted relative risk 0.99, 95% CI
0.56-1.73). Our findings suggest that aspirin use may increase the risk of stroke
in elderly subjects free from vascular disease. Copyright (C) 2001 S. Karger AG,
Basel
Keywords: aspirin/CARDIOVASCULAR HEALTH/cerebrovascular disorders/cohort
studies/cohort study/DETERMINANTS/disease/diseases/elderly/elderly
subjects/GENERAL- POPULATION/history/INCIDENT
STROKE/INFARCTION/Netherlands/population/PREVALENCE/primary
prevention/RABBIT MODEL/relative risk/risk/stroke/THROMBOEMBOLIC
STROKE/THROMBOLYSIS/use/vascular/vascular disease
Spence, J.D., Howard, V.J., Chambless, L.E., Malinow, M.R., Pettigrew, L.C., Stampfer,
M. and Toole, J.F. (2001), Vitamin intervention for stroke prevention (VISP)
trial: Rationale and design. Neuroepidemiology, 20 (1), 16-25.
Abstract: Elevated plasma levels of homocyst(e)ine [H(e)] are surprisingly common and
strongly associated with endothelial dysfunction and a marked increase in
vascular risk. Treatment with a combination of folic acid, pyridoxine (vitamin
B-6) and cobalamin (vitamin B-12) reduces plasma H(e) levels in most cases,
restores endothelial function, and regresses carotid plaque, but there is no
evidence that such treatment will reduce clinical events. The Vitamin
Intervention for Stroke Prevention (VISP) study is a double-masked, randomized,
multicenter clinical trial designed to determine if, in addition to best
medical/surgical management, high-dose folic acid, vitamin Bg, and Vitamin
B12 supplements will reduce recurrent stroke compared to lower doses of these
vitamins. Patients at least 35 years old with a nondisabling ischemic stroke
within 120 days, and screening plasma H(e) > the 25th percentile of benchmark
population data are eligible. Secondary endpoints are myocardial infarction or
fatal coronary heart disease. This paper describes the design and rationale of the
study. Copyright (C) 2001 S. Karger AG, Basel
Keywords: carotid/cerebral infarction prevention/cerebrovascular disorders/clinical
trial/clinical trials/CLINICAL-TRIALS/combination/coronary heart
disease/CORONARY-ARTERY DISEASE/design/disease/ENDOTHELIAL
DYSFUNCTION/endothelial function/folic acid/heart/heart
disease/homocyst(e)ine/HOMOCYSTINURIA/HYPERHOMOCYSTEINEMIA/
infarction/ischemic/ischemic stroke/management/myocardial/myocardial
infarction/NEURAL-TUBE DEFECTS/OCCLUSIVE
DISEASE/plaque/PLASMA TOTAL
HOMOCYSTEINE/population/prevention/randomized/recurrent
stroke/risk/RISK FACTOR/screening/stroke/stroke
prevention/treatment/trial/vascular/vascular risk/VASCULAR-DISEASE/vitamin
therapy/vitamins
Kennedy, B.S., Kasl, S.V., Brass, L.M. and Vaccarino, V. (2002), Trends in hospitalized
stroke for blacks and whites in the United States, 1980-1999. Neuroepidemiology,
21 (3), 131-141.
Abstract: Background: Racial differences in stroke mortality are widely recognized, but
it is unclear whether or not these differences are due mainly to blacks having a
greater stroke incidence or higher case fatality rates compared to those of whites.
Objectives: The aim of this study was to describe the race- specific US trends in
hospital discharge rates and in-hospital mortality among stroke patients for the
period 1980-1999. It was hypothesized that the hospital discharge rates and in-
hospital mortality among stroke patients would be greater for blacks than for
whites. Methods: Data from the National Hospital Discharge Survey for the
period 1980-1999 were used to identify stroke subjects according to the codes of
the International Classification of Diseases, ninth revision (codes 430-434 and
436). Direct standardization and Poisson regression were used to compare
hospitalized stroke morbidity and mortality rates between blacks and whites. The
main outcome measures were the number of stroke discharges and in-hospital
deaths for black and white stroke patients. Results: Between the years 1980 and
1999, the hospital discharge rates for stroke increased for blacks (n = 8,700) and
decreased for whites (n = 46,154); the in-hospital mortality rates decreased for
both black and white stroke patients. Generally, the risk of a stroke
hospitalization was greater for blacks than for whites by more than 70%, whereas
both groups were similar in terms of in-hospital mortality rates among stroke
patients. Conclusions: Differences between blacks and whites in terms of stroke
mortality are more likely due to differences in stroke incidence rather than case
fatality. These data imply that greater attention should be given to
primary/secondary prevention and that additional research is needed to
understand the reasons for these patterns. Copyright (C) 2002 S. Karger AG,
Basel
Keywords: 2000 CENSUS/ACUTE CEREBRAL INFARCTION/blacks/case
fatality/CT/ETHNICITY/FIRST-EVER/FOLLOW-UP/hemorrhagic
stroke/hospital/hospital mortality/hospitalization/in-hospital
mortality/incidence/INCIDENCE RATES/ischemic stroke/morbidity/morbidity
and mortality/MORTALITY/NORTHERN
MANHATTAN/outcome/prevention/RACE/RACE/ETHNICITY/research/risk/st
roke/stroke incidence/stroke mortality/stroke patients/trends/United States/US
Chimowitz, M., Howlett-Smith, H., Calcaterra, A., Lessard, N., Stern, B., Lynn, M.,
Hertzberg, V., Cotsonis, G., Swanson, S., Tutu-Gxashe, T., Griffin, P., Kosinski,
A., Chester, C., Asbury, W., Rogers, S., Chimowitz, M., Stern, B., Frankel, M.,
Howlett-Smith, H., Hertzberg, V., Lynn, M., Levine, S., Chaturvedi, S., Benesch,
C., Woolfenden, A., Sila, C., Zweifler, R., Lyden, P., Barnett, H., Easton, D.,
Fox, A., Furlan, A., Gorelick, P., Hart, R., Meldrum, H., Sherman, D., Cloft, H.,
Hudgins, P., Tong, F., Caplan, L., Anderson, D., Miller, V., Sperling, L.,
Weintraub, W., Marshall, J., Manoukian, S., Chimowitz, M., Stern, B., Frankel,
M., Samuels, O., Howlett-Smith, H., Lessard, N., Lane, B., Braimah, J.,
Sailor-Smith, S., Asbury, B., Chester, C., Chaturvedi, S., Levine, S., Wiseman,
D., Andersen, J., Sampson-Haggood, A., Kasner, S., Liebeskind, D., Cucchiara,
B., Chalela, J., McGarvey, M., Luciano, J., Shaw, S., Corrozi, M., Rockwell, K.,
Benesch, C., Zentner, J., Bean, S., Cole, D., Sila, C., Katzan, I., Rudd, N., Horvat,
M., Bragg, L., Begany, K., Mazzoli, G., Woolfenden, A., Teal, P., Johnston, C.,
Synnot, D., Busser, J., Lyden, P., Jackson, C., Werner, J., Kelly, N., McClean, T.,
Gonzales, J., Adams, C., Romano, J., Forteza, A., Hidalgo, A., Concha, M.,
Koch, S., Ferreira, A., Wityk, R., Aldrich, E., Lane, K., Rice, S., White, L., Traill,
T., Hemphill, C., Smith, W., Hewlett, L., Reed, C., Fields, S., Nehira, J.,
Wechsler, L., Gebel, J., Goldstein, S., Jovin, T., DeCesare, S., Harbison, B.,
Bernstein, R., Zweifler, R., Mendizabal, J., Alday, D., Yunker, R., Umana, E.,
Neal, T., Cruz-Flores, S., Selhorst, J., Leira, E., Holzemer, E., Armbruster, J.,
Walden, H., Olsen, T., Chan, R., Pullicino, P., Harrington, S., Hopkins, L., Crone,
K., Seyse, S., Hanna, J., Winkelman, M., Liskay, A., Schella, M., Lewayne, N.,
Gullion, L., Thakore, N., Tong, D., Garcia, M., Kemp, S., Shen, H., Tuholski, M.,
LaFranchise, E., Reel, S., Maddox, R., Rice, D., Mitsias, P., Papamitsakis, N.,
Reuther, J., Marchese, P., Kaatz, S., McCord, J., Bruno, A., Sears, A., Pettigrew,
T., Unwin, D., Johnson, M., Graybeal, D., Redhead, A., Stanford, J., Croft, C.,
Lee, R., Culebras, A., Vertino, M., Dean, M., Ayers, J., Zaleski, J., Silliman, S.,
Ray, W., Ballew, K., Darracott, D., Robinson, K., Malcolm, K., Johnston, K.,
Haley, E., Nathan, B., Maupin, K., Grandinetti, C., Adams, A., Libman, R.,
Benson, R., Bhatnagar, R., Gonzaga-Camfield, R., Grant, Y., Kwiatkowski, T.,
Alagappan, K., Saver, J., Kidwell, C., Liebeskind, D., Leary, M., Ferguson, K.,
Llanes, J., Melamed, F., Cohen, S., Krauss, T., Jolly, T., Date, L., Abedi, G.,
Song, A., Wells, M., Dandapani, B., Waddill, A., Parker, L., Vicari, R., Howard,
M., Tuhrim, S., Wright, P., Augustine, S., Ali, J., Halperin, J., Rothlauf, E.,
Kelley, R., Pajeau, A., Jinkins, P., Wang, Y., Booth, A., Middlebrook, M., Grotta,
J., Campbell, M., Shaw, S., Boudreaux, R., Hickey, J., Munson, R., Homer, D.,
McGinn, T., Small, B., Feinberg, A., Shim, B., Nichols, F., Sahm, M., Kutlar, A.,
Belden, J., Diconzo-Fanning, D., Carr, A., Allan, W., Spiro, R., Thaler, D.,
Scandura, T., Douglass, L., Libenson, M., Kase, C., Licata-Gehr, E., Ansell, J.,
McDonough, M., Babikian, V., Allen, N. and Brophy, M. (2003), Design,
progress and challenges of a double-blind trial of warfarin versus aspirin for
symptomatic intracranial arterial stenosis. Neuroepidemiology, 22 (2), 106-117.
Abstract: Background and Relevance: Atherosclerotic stenosis of the major intracranial
arteries is an important cause of transient ischemic attack (TIA) or stroke. Of the
900,000 patients who suffer a TIA or stroke each year in the USA, intracranial
stenosis is responsible for approximately 10%, i.e. 90,000 patients. There have
been no prospective trials evaluating antithrombotic therapies for preventing
recurrent vascular events in these patients. The main objective of this trial is to
compare warfarin [international Normalized Ratio (INR) 2-3] with aspirin (1,300
mg/day) for preventing stroke (ischemic and hemorrhagic) and vascular death in
patients presenting with TIA or stroke caused by stenosis of a major intracranial
artery. Study Design: Prospective, randomized, double-blind, multicenter trial.
The sample size required will be 403 patients per group, based on stroke and
vascular death rates of 33% per 3 years in the aspirin group vs. 22% per 3 years
in the warfarin group, a p value of 0.05, power of 80%, a 24% rate of 'withdrawal
of therapy', and a 1% rate of 'lost to follow-up'. Conduct of Trial. Patients with
TIA or nondisabling stroke caused by greater than or equal to50% stenosis of a
major intracranial artery documented by catheter angiography are randomized to
warfarin or aspirin. Patients are contacted monthly by phone and examined every
4 months until a common termination date. Mean follow-up in the study is
expected to be 3 years. Conclusion: This study will determine whether warfarin
or aspirin is superior for patients with symptomatic intracranial arterial stenosis.
Furthermore, it will identify patients whose rate of ischemic stroke in the
territory of the stenotic intracranial artery on best medical therapy is sufficiently
high to justify a subsequent trial comparing intracranial angioplasty/stenting with
best medical therapy in this subset of patients. Copyright (C) 2003 S. Karger AG,
Basel
Keywords:
ANGIOGRAPHY/ANTICOAGULANTS/antithrombotic/arterial/arteries/aspirin/
ATRIAL- FIBRILLATION/cerebral angiography/clinical
trial/death/FOLLOW-UP/hemorrhagic/HYPOTHESES/INFARCTION/INR/intra
cranial/intracranial atherosclerosis/ischemic/ischemic stroke/medical/MIDDLE
CEREBRAL-ARTERY/OCCLUSIVE
DISEASE/randomized/stenosis/stroke/STROKE
PREVENTION/therapy/TIA/transient/transient ischemic attack/TRANSIENT
ISCHEMIC ATTACKS/trial/trials/USA/vascular/vascular events/warfarin
Piguet, O., Grayson, D.A., Creasey, H., Bennett, H.P., Brooks, W.S., Waite, L.M. and
Broe, G.A. (2003), Vascular risk factors, cognition and dementia incidence over
6 years in the Sydney older persons study. Neuroepidemiology, 22 (3), 165-171.
Abstract: The specific contributions of factors associated with an increased risk of stroke
to cognitive decline and vascular dementia in elderly people remain somewhat
unclear. We investigated the prevalence of vascular risk factors (RFs) and their
role on the incidence of dementia, cognitive decline and death over a 6-year
period in a sample of 377 non-demented community dwellers aged 75 years and
over at the time of study entry. Presence and history of vascular RFs and
cognitive decline over 6 years were ascertained using direct interviews, medical
and cognitive examinations. Hypertension and history of heart disease were very
common affecting about 50% of the participants. At 6 years, 114 (30%)
participants had died, and 63 (16.7%) met diagnostic criteria for dementia.
Hypertension was significantly associated with a greater cognitive decline but
not with dementia. Smoking and stroke diagnosis showed a significant positive
association with death. Reported hypercholesterolaemia was found to be
associated with a protective effect for the development of dementia, for cognitive
decline and for death over the 6-year period. All other associations were
non-significant. Figures of dementia incidence are similar to previous studies in
contrast to the lack of anticipated effects of the vascular RFs. The results indicate
that in very old participants, the impact of vascular RFs changes with time and
may no longer contribute to the development of dementia and cognitive decline.
Copyright (C) 2003 S. Karger AG, Basel
Keywords: aged/ALZHEIMERS-DISEASE/Australia/changes/cognition/cognitive
decline/community/death/dementia/development/DIAGNOSIS/diagnostic/diseas
e/elderly/EPIDEMIOLOGY/HEALTH/heart/heart
disease/history/hypercholesterolaemia/incidence/LIFE/medical/old/POPULATIO
N/prevalence/PREVENTION/results/risk/risk factors/stroke/vascular/vascular
dementia/vascular risk/vascular risk factors/WHITE-MATTER LESIONS
Hurst, R.W. (1996), Interventional neuroradiology of the head and neck. Neuroimaging
Clinics of North America, 6 (2), 473-&.
Abstract: Interventional neuroradiologic techniques continue to assume increasing
importance in the management of disorders of the head and neck. Their
usefulness includes not only treatment for neoplastic and vascular conditions
with embolization but also test occlusion for diagnostic information. Future
developments also may extend the usefulness of interventional techniques to
additional conditions, including prevention and treatment for ischemic stroke
Keywords: BALLOON TEST OCCLUSION/CAROTID-CAVERNOUS
FISTULAS/CEREBRAL BLOOD-FLOW/CLASSIFICATION/ischemic
stroke/MAXILLARY ARTERY/POSTERIOR
EPISTAXIS/prevention/stroke/TRANSARTERIAL EMBOLIZATION/treatment
Cho, L. and Yadav, J.S. (2002), Embolization in atherosclerosis. Neuroimaging Clinics
of North America, 12 (3), 365-+.
Abstract: New evidence has highlighted the frequency and importance of atherosclerotic
embolization to the microvasculature. Several factors determine the clinical
significance of embolization. These include the characteristics of the embolus
itself, the frequency of emboli in the same vascular bed, and the collateral supply
and perfusion pressure of the recipient vascular bed. Until recently, we have had
limited ability to diagnose microvascular obstruction in living patients. With the
availability of imaging technology such as MRI, myocardial contrast
echocardiography, and transcranial Doppler (TCD), the frequency and the
importance of microvascular obstruction has been better understood in the last
two decades. Embolization that leads to arterial occlusion occurs more frequently
in the cerebral circulation than in the coronary circulation and can have a
devastating effect on the patient. Consequently, the detection and prevention of
embolic events are crucial to stroke prevention. Although much work has been
done to prevent large emboli, not much is known about prevention or
consequence of microembolic events. Microembolic events are common in high-
risk patients with carotid stenosis and in patients undergoing carotid
endarterectomy (CEA), carotid stenting, or coronary artery bypass graft surgery
(CABG). This article reviews the latest technology in detecting and preventing
microembolization during carotid stenting and CABG
Keywords:
arterial/atherosclerosis/bypass/CABG/CARDIAC-SURGERY/CARDIOPULMO
NARY BYPASS/carotid/CAROTID ENDARTERECTOMY/carotid
stenosis/carotid stenting/cerebral/CEREBRAL
MICROEMBOLISM/CREATINE-KINASE
ELEVATION/detection/Doppler/echocardiography/emboli/embolization/embolu
s/endarterectomy/high risk/INTENSITY TRANSIENT
SIGNALS/MRI/myocardial/MYOCARDIAL-INFARCTION/PERCUTANEOU
S CORONARY INTERVENTIONS/prevention/REVASCULARIZATION
PROCEDURES/risk/stenosis/stenting/stroke/stroke
prevention/surgery/TCD/transcranial/transcranial Doppler/TRANSCRANIAL
DOPPLER ULTRASOUND/vascular
Di Tullio, M.R. and Homma, S. (2002), Transesophageal echocardiography aortic
plaque imaging. Neuroimaging Clinics of North America, 12 (3), 445-+.
Abstract: Transesophageal echocardiography (TEE) has been used widely as a
diagnostic tool during the past two decades to detect cardiac abnormalities that
are not visible, or are inadequately visualized, by transthoracic echocardiography
or by other noninvasive diagnostic imaging techniques. Recently, the use of TEE
to detect cardioembolic sources in patients with acute ischemic stroke or
peripheral embolism has increased dramatically. It is estimated that
approximately one fourth of all TEE performed in the United States is done for
this reason. TEE is far more sensitive than transthoracic echocardiography for
cardioembolic source detection and has in fact contributed to the actual discovery
of new potential embolic sources. Among them, the presence of large atheromas
in the proximal portion of the aorta has been recognized as an important risk
factor for stroke in patients older than 60 years, and TEE has become one of the
cornerstones of the diagnostic work-up in this subset of patients. This article
focuses on the use of TEE to search for atherosclerotic plaques in the aorta and
its contribution to the assessment of the associated embolic risk and the
prevention of embolic complications
Keywords: acute/acute ischemic
stroke/aorta/ARCH/ATHEROMAS/cardiac/cardioembolic/complications/DEBRI
S/detection/diagnostic/diagnostic
imaging/echocardiography/embolism/FOLLOW-UP/ischemic/ISCHEMIC
STROKE/MORPHOLOGY/MR/plaque/prevention/RISK/risk
factor/stroke/SYSTEMIC EMBOLI/THORACIC AORTA/transthoracic
echocardiography/United States/use/VASCULAR EVENTS
Yamamoto, I., Kanno, H. and Fujii, S. (1998), Indication for carotid endarterectomy.
Neurologia Medico-Chirurgica, 38 275-278.
Abstract: From recent randomized studies, carotid endarterectomy (CEA) is highly
beneficial to the patients with a symptomatic high-grade carotid artery stenosis
(70-99%), but the surgical indication for an asymptomatic carotid artery disease
remains unsolved. Sixty-three atheromatous plaques (symptomatic 51,
asymptomatic 12) were obtained from 57 patients who underwent CEA. The
presence of an intraplaque hemorrhage was noted in 75% from symptomatic
plaques, compared with 33% from asymptomatic ones. A plaque disruption
occurred over protruding mounds of intraplaque hemorrhage and was noted in
76% and 42% from symptomatic and asymptomatic ones, respectively. However,
asymptomatic plaques, which were angiographically demonstrated as carotid
ulcer of types B and C, had a high incidence of intraplaque hemorrhage as well
as plaque disruption. Three patients followed with asymptomatic contralateral
carotid artery disease developed a stroke following ipsilateral revascularization
and all three specimens showed the presence of plaque hemorrhage and
disruption. It is concluded that before prophylactic CEA is considered, an
intraplaque hemorrhage and/or plaque disruption should be detected by less
invasive procedures such as ultrasonography
Keywords: ARTERY/asymptomatic/carotid/carotid artery/carotid artery disease/carotid
artery stenosis/carotid
endarterectomy/CEREBRAL-ISCHEMIA/endarterectomy/hemorrhage/incidence
/intraplaque hemorrhage/INTRAPLAQUE
HEMORRHAGE/JAPAN/NATURAL-HISTORY/PLAQUE/plaque
disruption/PREVENTION/randomized/STENOSIS/stroke/surgical
indication/ultrasonography
Vangijn, J. (1992), Aspirin - Dose and Indications in Modern Stroke Prevention.
Neurologic Clinics, 10 (1), 193-207
Keywords:
ACETYLATION/CEREBRAL-ISCHEMIA/CONFIDENCE-INTERVALS/HEA
LTHY- SUBJECTS/INTEROBSERVER
AGREEMENT/MYOCARDIAL-INFARCTION/PLATELET
CYCLOOXYGENASE INHIBITION/PROSTACYCLIN/THROMBOXANE
PRODUCTION/TRANSIENT ISCHEMIC ATTACKS
Barnett, H.J.M. (1992), Stroke Prevention by Surgery for Symptomatic Disease in
Carotid Territory. Neurologic Clinics, 10 (1), 281-292
Keywords: ARTERIES/BILATERAL
OCCLUSION/ENDARTERECTOMY/INTERNATIONAL RANDOMIZED
TRIAL/MEDICALLY TREATED PATIENTS/MORTALITY/RISK/TRENDS
Thompson, D.W. and Furlan, A.J. (1996), Clinical epidemiology of stroke. Neurologic
Clinics, 14 (2), 309-&.
Abstract: The effect of stroke as a major health issue in the United States is well
established. Well-designed epidemiologic studies have contributed important
information about the natural history of stroke and its associated risk factors.
These cerebrovascular profiles have provided the foundation for many of the
current ischemic stroke trials, but the cause and prevention of the hemorrhagic
subtypes remain elusive
Keywords: BLACKS/CEREBRAL
ANEURYSMS/health/history/INFARCTS/INTRACRANIAL
ANEURYSMS/ischemic stroke/prevention/risk
factors/stroke/SUBARACHNOID HEMORRHAGE/THROMBOEMBOLIC
STROKE/trials
Alexander, D.N. (1998), Geriatric neurorehabilitation. Neurologic Clinics, 16 (3), 713-+.
Abstract: Rehabilitation of the elderly patient with a neurologic disease consists
primarily of the coordinated actions of an interdisciplinary team of physicians.
Key aspects of this process are remediation to reduce neurologic impairments,
prevention of secondary complications and comorbidities, compensation to offset
and adapt to residual disabilities, and maintenance of function over the long term
Keywords: complications/elderly/ELDERLY
PEOPLE/prevention/RECOVERY/REHABILITATION/STROKE
Diener, H.C. (2000), Stroke prevention - Antiplatelet and antithrombolytic therapy.
Neurologic Clinics, 18 (2), 343-+.
Abstract: In patients with TLA or ischemic stroke of noncardiac origin antiplatelet drugs
are able to decrease the risk of stroke by 11-15%, and the risk of stroke, MI, and
vascular death by 15- 22%, but not mortality. Low doses of aspirin (50-325 mg)
are as effective as high doses and cause less gastrointestinal side effects. Severe
bleeding complications are not dose-dependent. The combination of aspirin with
slow release dipyridamole is superior to aspirin alone for stroke prevention.
Ticlopidine is superior to aspirin but has slightly more serious adverse effects
(neutropenia). It will be replaced by clopidgrel which has a better safety profile.
Anticoagulation with an INR between 3.0 and 4.5 is too dangerous. Whether
anticoagulation with lower INR is safe and effective is not yet known
Keywords: ACETYLSALICYLIC-ACID/adverse
effects/anticoagulation/antiplatelet/antiplatelet
drugs/aspirin/bleeding/CEREBRAL-ISCHEMIA/CEREBROVASCULAR-DISE
ASE/complications/death/DIPYRIDAMOLE/DRUGS/Germany/INR/ischemic/is
chemic stroke/LOW-DOSE
ASPIRIN/mortality/neutropenia/prevention/RANDOMIZED
TRIAL/risk/safety/SECONDARY PREVENTION/stroke/stroke
prevention/therapy/THROMBOTIC THROMBOCYTOPENIC
PURPURA/TICLOPIDINE/vascular
Benson, R.T. and Sacco, R.L. (2000), Stroke prevention - Hypertension, diabetes,
tobacco, and lipids. Neurologic Clinics, 18 (2), 309-+.
Abstract: This article reviews the most recent epidemiologic evidence supporting topics
such as hypertension, diabetes, tobacco, and Lipids as risks for stroke. Where
available, American Stroke Association (ASA) and National Stroke Association
(NSA) consensus statement guidelines for the treatment of these risk factors are
given
Keywords: CARDIOVASCULAR EVENTS/CAROTID
ATHEROSCLEROSIS/CIGARETTE-SMOKING/consensus/CORONARY
HEART-DISEASE/DENSITY-LIPOPROTEIN
CHOLESTEROL/diabetes/guidelines/hypertension/INDEPENDENT RISK
FACTOR/ISCHEMIC
STROKE/lipids/MYOCARDIAL-INFARCTION/prevention/risk/risk
factors/SERUM-CHOLESTEROL/SMOKING
CESSATION/stroke/tobacco/treatment
Staub, L. and Morgenstern, L.B. (2000), Stroke in Hispanic Americans. Neurologic
Clinics, 18 (2), 291-+.
Abstract: The Hispanic American population is the fastest growing minority group with
increasing representation among the older age strata. Current ethnic-specific
cerebrovascular disease data regarding stroke outcomes and risk factor status
reveal significant differences compared with other race/ethnic groups. The
authors discuss the literature on stroke incidence and mortality among Hispanic
populations. Traditional risk factors, access to care and stroke mechanism
differences are also discussed. Advances in Hispanic American specific stroke
prevention and treatment efforts demand further investigation to better define
Hispanic American stroke prevention and acute treatment strategies
Keywords: acute/acute treatment/AFRICAN-AMERICANS/age/CEREBRAL
INFARCTION/cerebrovascular/cerebrovascular
disease/disease/EPIDEMIOLOGY/ETHNIC-DIFFERENCES/Hispanic
Americans/incidence/MORTALITY/NORTHERN MANHATTAN
STROKE/population/prevention/RACE/risk/risk factor/risk
factors/RISK-FACTORS/SOCIOECONOMIC- STATUS/status/stroke/stroke
incidence/stroke prevention/treatment/WHITE
Palacio, S. and Hart, R.G. (2002), Neurologic manifestations of cardiogenic embolism -
An update. Neurologic Clinics, 20 (1), 179-+.
Abstract: Stroke should be considered a syndrome and not a single disease, and this is
especially true when stroke is the result of cardiogenic embolism. Increasing
evidence about new potential sources of embolism and the recognition of
different risk groups with established causes of cardioembolic strokes in recent
years continue to challenge clinicians in diagnosis and management. The
frequent coexistence of noncardioembolic etiologies of stroke (approximately
20%) in patients with potential cardioembolic sources makes management
decisions even more difficult.(26) On the other hand, cardioembolic strokes are
largely preventable, making early recognition paramount. The big challenge is
first to establish a firm cause-effect relationship and then to stratify the risk of
individual patients to choose the best therapy. When weighing treatment
alternatives, it is the absolute risk reduction in stroke by a therapy, determined in
part by the absolute rate of stroke with each specific cardioembolic source, that is
crucial. Basic concepts about cardiogenic embolism to the brain have been
comprehensively reviewed elsewhere.(10, 11,16) This article focuses on new
data and concepts from the past 5 years
Keywords: absolute risk/ACUTE
MYOCARDIAL-INFARCTION/brain/cardioembolic/causes/CRYPTOGENIC
STROKE/diagnosis/disease/embolism/INFECTIVE
ENDOCARDITIS/management/NONVALVULAR
ATRIAL-FIBRILLATION/PATENT FORAMEN OVALE/risk/SECONDARY
PREVENTION/SEPTAL ABNORMALITIES/stroke/STROKE
PREVENTION/therapy/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/TRANSIENT ISCHEMIC ATTACK/treatment
Nighoghossian, N., Perinetti, M., Barthelet, M., Adeleine, P. and Trouillas, P. (1995),
Transesophageal Echocardiography in Patients Less-Than-60 Years of Age
Without Obvious Cardiac Source of Embolism. Neurological Research, 17 (5),
368-372.
Abstract: Minor potential cardioembolic sources of stroke such as atrial septal
aneurysms (ASA) or patent foramen ovale (PFO) are important risk factors for
cryptogenic stroke. We aim to determine the prevalence of these abnormalities
through an exhaustive etiological workup including transesophageal
echocardiography and cervical arteries assessment in stroke patients younger
than 60 years of age who had no evidence of a significant source of embolism.
We classified 118 stroke patients into four groups according to transesophageal
echocardiography (TEE) and cervical arteries assessment findings. Group A,
consisted of 30 (25.4%) patients who had an arteriopathy likely related to stroke
without any cardiac abnormality; Group B, 49 (41%) patients who had only a
potential cardiac source; Group C, 9 (7.6%) patients who had an obvious arterial
source of stroke and incidental cardiac abnormalities, and Group D, 30 (25.4%)
patients who had neither cardiac nor arterial source. Data were analysed with X(2)
test for the comparison of risk factors between groups. Variance analysis was
used to compare age between groups. Significance was assessed as p 200
cm/sec time averaged mean in the middle cerebral or intracranial internal carotid
arteries) have a very significant reduction in stroke with chronic transfusion.
Hydroxyurea and bone marrow transplantation may in the future be used for
stroke prevention, but there are no data at present. There is no primary stroke
prevention strategy for adults and prevention of recurrent stroke has not been
well studied. Transfusion is an option, as well as empiric use of antiplatelet
agents, warfarin, or surgery, but there are virtually no data on risk/benefit for
these treatments in adults. All SCD patients with intracranial hemorrhage should
be considered for angiography to look for surgically correctable lesions.
CONCLUSION- The neurologist should bear in mind that, although stroke is
common in SCD, other etiologies and causes for neurological dysfunction may
be present and should be considered in patients with SCD who present with
neurological symptoms
Keywords: adults/ANEMIA/antiplatelet/antiplatelet agents/arteries/carotid/carotid
arteries/cerebral/cerebral infarction/children/CHILDREN/clinical
trial/COMPLICATIONS/disease/Doppler/epidemiology/hemorrhage/incidence/i
ntracranial
hemorrhage/morbidity/mortality/neurologist/PREVENTION/primary/randomize
d/RECURRENT STROKE/REVIEW/RISK/screening/sickle cell
disease/stroke/stroke prevention/surgery/transcranial/TRANSCRANIAL
DOPPLER/transfusion/TRANSFUSION
THERAPY/trial/ULTRASONOGRAPHY/use/warfarin
Sivenius, J., Laakso, M., Penttila, I.M., Smets, P., Lowenthal, A. and Riekkinen, P.J.
(1991), The European Stroke Prevention Study - Results According to Sex.
Neurology, 41 (8), 1189-1192.
Abstract: The European Stroke Prevention Study was a multicenter trial comparing the
effect of a combination of 75 mg dipyridamole and 330 mg acetylsalicylic acid
tid with placebo in the prevention of stroke or death after one or more attacks of
recent transient ischemic attack or stroke of atherothrombotic origin. From the
2,500 patients in the intention-to-treat analysis, the proportion of women was
42%, and from the 1,861 patients in the explanatory analysis it was 44%. The
endpoint incidence was significantly higher in men than in women. The endpoint
reduction was statistically significant in men in both types of analyses with total
endpoints (stroke or death) and in the risk of stroke, while in women it was
statistically significant only in the intention-to-treat analysis with total endpoints.
However, there was a marked percentage reduction of endpoints in both men and
women in explanatory analysis. The risk reduction of strokes was 49% for men
and 41% for women, and the reduction of total endpoints was 39% in men and
30% in women. Thus, antiplatelet therapy is effective in the prevention of stroke
or death in both sexes
Keywords: ACID/ASPIRIN/BRUITS/CEREBRAL-ISCHEMIA/CONTROLLED
TRIAL/DIFFERENCE/PLATELET- AGGREGATION/RISK/SECONDARY
PREVENTION/TRANSIENT ISCHEMIC ATTACKS
Grotta, J.C., Norris, J.W., Kamm, B., Adams, H.P., Anderson, B.A., Bellavance, A.,
Byer, J.A., Couch, J.R., Dobkin, B.H., Fisher, M.J., Hanna, G.R., Hershey, L.A.,
Kase, C.S., Lacy, J.R., Levy, L.L., Mayman, C., Meyer, J.S., Olinger, C.P.,
Prysephillips, W., Robertson, J.T., Rothrock, J.F., Sadowsky, C.H., Swanson,
P.D., Taylor, J. and Weisberg, L.A. (1992), Prevention of Stroke with
Ticlopidine - Who Benefits Most. Neurology, 42 (1), 111-115.
Abstract: We examined the baseline characteristics of patients in the Ticlopidine Aspirin
Stroke Study (TASS) to determine if the effects of the two treatments in
preventing stroke differed in various subgroups. Patients with the following
characteristics did less well on aspirin: elevated creatinine, hypertension or
diabetes requiring treatment, or treatment with anticoagulant or antiplatelet drugs
prior to their qualifying TIA or stroke. Women and patients with vertebrobasilar
symptoms did particularly well on ticlopidine. We performed arteriography in
1,188 patients with carotid qualifying events. The frequency of stroke in patients
with abnormal arteriograms ipsilateral to their symptoms was slightly higher than
in those with normal carotid arteries. Ticlopidine was more effective in patients
without carotid stenosis. Ticlopidine is more effective than aspirin in preventing
strokes in patients having warning TIAs. The patients who benefit most from
ticlopidine may be women, those who have vertebrobasilar symptoms, those with
cerebral ischemic symptoms while on aspirin or anticoagulant therapy, and
patients with diffuse atherosclerotic disease rather than high-grade carotid
stenosis
Keywords: ASPIRIN/CEREBRAL-ISCHEMIA/CONTROLLED TRIAL/TIA
Miller, V.T., Rothrock, J.F., Pearce, L.A., Feinberg, W.M., Hart, R.G. and Anderson,
D.C. (1993), Ischemic Stroke in Patients with Atrial-Fibrillation - Effect of
Aspirin According to Stroke Mechanism. Neurology, 43 (1), 32-36.
Abstract: Ischemic strokes occurring in patients with nonrheumatic atrial fibrillation are
due to a variety of mechanisms, not exclusively to cardiogenic embolism.
Without knowledge of antithrombotic therapy assignment, we categorized
strokes in the Stroke Prevention in Atrial Fibrillation Study as presumed
cardioembolic or noncardioembolic. We then compared patient clinical and
echocardiographic variables, as well as the efficacy of aspirin prophylaxis, for
each stroke type. Of 71 ischemic strokes, we categorized 46 (65%) as
cardioembolic, 13 (18%) as noncardioembolic, and 12 (17%) as of uncertain
cause. Patients developing noncardioembolic strokes, relative to cardioembolic
strokes, were more commonly men (p = 0.005) and were more likely to have left
ventricular wall motion abnormalities by two-dimensional echocardiography (p =
0.002). Aspirin reduced the occurrence of strokes categorized as
noncardioembolic significantly more than it did those categorized as
cardioembolic (p = 0.01). These results emphasize the value of considering
stroke mechanisms in therapeutic trials of antithrombotic agents and suggest a
differential effect of aspirin according to mechanism
Keywords: REGISTRY/RISK
Pessin, M.S., Estol, C.J., Lafranchise, F. and Caplan, L.R. (1993), Safety of
Anticoagulation After Hemorrhagic Infarction. Neurology, 43 (7), 1298-1303.
Abstract: Cerebral hemorrhagic infarction visualized on CT, secondary to embolic stroke
in an anticoagulated individual, is usually associated with clinically stable or
improving neurologic signs; fear of transforming the hemorrhagic infarction into
a hematoma, however, usually prompts cessation of anticoagulation until the
blood has cleared on CT, despite the recognized risk of recurrent embolism
during this non-anticoagulated period. We now report our experience with 12
patients with hemorrhagic infarction who remained anticoagulated. Eleven men
and one woman, ages 33 to 77, developed hemorrhagic infarction while on
heparin, warfarin, or both, for prevention of recurrent embolism. Patients were
either continued on uninterrupted anticoagulation from stroke onset (n = 6), or
anticoagulation was withheld for several days and then resumed (n = 4), or it was
withheld for 5 and 14 days (n = 2) after stroke onset and then continued
uninterrupted despite the CT appearance of hemorrhagic infarction. Eleven
patients had a definite cardioembolic source for stroke (atrial fibrillation, seven;
ventricular thrombus, two; and ventricular dyskinesia, two). One patient had
carotid occlusion with local intra-arterial embolism. Hemorrhagic infarcts varied
in size and were located in the middle cerebral artery territory in 11 patients and
posterior cerebral artery territory in one. All patients remained clinically stable or
improved on anticoagulation. Serial CTs showed fading hemorrhagic areas.
When the risk of recurrent embolism is high, anticoagulation may be safely used
in some patients with hemorrhagic infarction
Keywords: ATRIAL- FIBRILLATION/CARDIAC ORIGIN/CT/EMBOLIC
CEREBRAL INFARCTION/RISK/STROKE
Weisberg, L.A. (1993), The Efficacy and Safety of Ticlopidine and Aspirin in Non-
Whites - Analysis of A Patient Subgroup from the Ticlopidine Aspirin Stroke
Study. Neurology, 43 (1), 27-31.
Abstract: We analyzed the efficacy of ticlopidine and aspirin in the non- white subgroup
of patients from the Ticlopidine Aspirin Stroke Study. In this double-blind,
randomized, multicenter study, patients received either ticlopidine 250 mg (312
non-white patients) or aspirin 650 mg (291 non-white patients) twice a day. The
1-year cumulative event rate per 100 patients for nonfatal stroke or death from
any cause was 5.5 for ticlopidine and 10.6 for aspirin-an apparent 48.1%
reduction in risk with ticlopidine relative to aspirin. The 1-year cumulative event
rate for fatal or non-fatal stroke was 3.7 for ticlopidine and 9.4 for aspirin-an
apparent 60.8% reduction in risk with ticlopidine relative to aspirin. The
cumulative event rates for both endpoints also were lower in ticlopidine-treated
patients after the 2nd and 3rd years. These reductions were not significantly
different between treatment groups, but were of the same order of magnitude as
previously found for the total series, which did attain statistical significance (p =
0.048), and the frequency of adverse events was not significantly different
between the two treatment groups. Severe neutropenia, the most serious adverse
event associated with ticlopidine use, did not occur in non-white patients. These
results suggest that ticlopidine is superior to aspirin for stroke prevention in
non-whites
Keywords:
DECLINE/DISEASE/HYPERTENSION/MORTALITY/PREVENTION/TRAN
SIENT ISCHEMIC ATTACKS/TRIAL/UNITED-STATES
Depippo, K.L., Holas, M.A., Reding, M.J., Mandel, F.S. and Lesser, M.L. (1994),
Dysphagia Therapy Following Stroke - A Controlled Trial. Neurology, 44 (9),
1655-1660.
Abstract: Objective: To determine the effect, of graded levels of intervention by a
dysphagia therapist on the occurrence of pneumonia, dehydration,
calorie-nitrogen deficit, recurrent upper airway obstruction, and death following
stroke. Design: A randomized control trial, Setting: Inpatient stroke rehabilitation
unit. Patients: All patients met the following eligibility criteria: (1) stroke defined
by clinical history and neurologic examination with compatible CT or MRI, (2)
ages 20 to 90 years inclusive, (3) no known history of significant oral or
pharyngeal anomaly, (4) laboratory values below end point criteria, (5) failure on
the Burke Dysphagia Screening Test, and (6) modified barium swallow
evaluation evidence of dysphagia (patients who aspirated greater than or equal to
50% of all consistencies presented, even using compensatory swallowing
techniques, were excluded). Of 123 eligible patients, eight refused study
participation. One hundred fifteen patients were randomized. Interventions:
Three graded levels of dysphagia therapist control of diet consistency and
reinforcement of compensatory swallowing techniques were provided during the
inpatient rehabilitation stay. Main outcome measures: Pneumonia, dehydration,
calorie-nitrogen deficit, recurrent upper airway obstruction, and death. Results:
The log rank statistic showed no significant difference between the three
treatment groups for the distribution of time until end point during the inpatient
stay or to 1 year post-stroke. Conclusion: Limited patient and family instruction
regarding use of diet modification and compensatory swallowing techniques
during inpatient rehabilitation is as effective as therapist control of diet
consistency and daily rehearsal of compensatory swallowing techniques for the
prevention of medical complications associated with dysphagia following stroke
Keywords:
ASPIRATION/complications/CT/DEATH/diet/evaluation/history/prevention/RE
LATIVE RISK/stroke/SWALLOW/treatment/VIDEOFLUOROSCOPY
Raps, E.C. and Galetta, S.L. (1995), Stroke Prevention Therapies and Management of
Patient Subgroups. Neurology, 45 (2), S19-S24.
Abstract: Stroke is the third leading cause of death in the United States. Efforts directed
at reversing acute cerebral ischemia are promising but are hampered by multiple
logistic and physiologic barriers. Prevention of stroke, therefore, remains of
critical importance. Primary prevention is accomplished through reduction of
risk factors and the appropriate use of warfarin or aspirin in patients with cardiac
sources of emboli such as atrial fibrillation. Secondary prevention is designed to
reduce the risk of stroke in patients with known stroke precursors, including
transient ischemia, reversible ischemic deficits, and completed stroke. Aspirin
and ticlopidine are two antiplatelet agents with an established role in secondary
stroke prevention. In a major North American clinical trial, ticlopidine
demonstrated superior efficacy to aspirin for the prevention of recurrent stroke,
particularly in the first year following a stroke. Dipyridamole has not been shown
to be useful for stroke prevention. The role of warfarin in the prevention of
recurrent noncardiogenic stroke remains controversial and is currently under
investigation. Stroke prevention remains an important challenge, and therapy
should be individualized to achieve optimal results
Keywords: antiplatelet agents/aspirin/atrial fibrillation/cerebral
ischemia/CEREBRAL-ISCHEMIA/CHRONIC
ATRIAL-FIBRILLATION/DIPYRIDAMOLE/DISEASE/EFFICACY/emboli/fi
brillation/FRAMINGHAM/ischemia/PLACEBO/prevention/RANDOMIZED
TRIAL/risk/risk factors/stroke/stroke prevention/ticlopidine/TICLOPIDINE
ASPIRIN STROKE/transient/WARFARIN
Chimowitz, M.I., Kokkinos, J., Strong, J., Brown, M.B., Levine, S.R., Silliman, S.,
Pessin, M.S., Weichel, E., Sila, C.A., Furlan, A.J., Kargman, D.E., Sacco, R.L.,
Wityk, R.J., Ford, G. and Fayad, P.B. (1995), The Warfarin-Aspirin
Symptomatic Intracranial Disease Study. Neurology, 45 (8), 1488-1493.
Abstract: We conducted a retrospective, multicenter study to compare the efficacy of
warfarin with aspirin for the prevention of major vascular events (ischemic
stroke, myocardial infarction, or sudden death) in patients with symptomatic
stenosis of a major intracranial artery. Patients with 50 to 99% stenosis of an
intracranial artery (carotid; anterior, middle, or posterior cerebral; vertebral; or
basilar) were identified by reviewing the results of consecutive angiograms
performed at participating centers between 1985 and 1991. Only patients with
TIA or stroke in the territory of the stenotic artery qualified for inclusion in the
study. Patients were prescribed warfarin or aspirin according to local physician
preference and were followed by chart review and personal or telephone
interview. Seven centers enrolled 151 patients; 88 were treated with warfarin and
63 were treated with aspirin. Median follow-up was 14.7 months (warfarin group)
and 19.3 months (aspirin group). Vascular risk factors and mean percent stenosis
of the symptomatic artery were similar in the two groups, yet the rates of major
vascular events were 18.1 per 100 patient-years of follow-up in the aspirin group
(stroke rate, 10.4/100 patient-years; myocardial infarction or sudden death rate,
7.7/100 patient-years) compared with 8.4 per 100 patient-years of follow-up in
the warfarin group (stroke rate, 3.6/100 patient-years; myocardial infarction or
sudden death rate, 4.8/100 patient-years). Kaplan-Meier analysis showed a
significantly higher percentage of patients free of major vascular events among
patients treated with warfarin (p = 0.01). The relative risk of a major vascular
event in those treated with warfarin was 0.46 (95% CI, 0.23 to 0.86) compared
with patients treated with aspirin. Major hemorrhagic complications occurred in
three patients on warfarin (including two deaths) during 166 patient-years of
follow-up and in none of the patients on aspirin during 143 patient-years of
follow- up. This study suggests a favorable risk/benefit ratio for warfarin
compared with aspirin for the prevention of major vascular events in patients
with symptomatic intracranial large-artery stenosis. A prospective, randomized
study is needed to confirm these findings
Keywords: ANTICOAGULANTS/aspirin/carotid/complications/ischemic
stroke/MIDDLE CEREBRAL-ARTERY/myocardial
infarction/PREVENTION/PROGNOSIS/relative risk/risk/risk
factors/STENOSIS/STROKE/TIA/TICLOPIDINE/TRANSIENT ISCHEMIC
ATTACKS/vascular/warfarin
Bowes, M.P., Rothlein, R., Fagan, S.C. and Zivin, J.A. (1995), Monoclonal-Antibodies
Preventing Leukocyte Activation Reduce Experimental Neurologic Injury and
Enhance Efficacy of Thrombolytic Therapy. Neurology, 45 (4), 815-819.
Abstract: We evaluated the ability of monoclonal antibodies directed against leukocyte
adhesion molecules (intercellular adhesion molecule-1 [ICAM-1], CD18) to
enhance the efficacy of thrombolysis in a rabbit cerebral embolism stroke model.
Both tissue-type plasminogen activator (tPA) and anti-CD18 (alpha- CD18)
monoclonal antibody administered 5 minutes after embolization increased the
quantity of clots required to produce neurologic damage, although the
combination was no more effective than either substance alone. Neither
alpha-CD18 nor anti-ICAM-1 (alpha-ICAM-1) improved neurologic outcome at
postischemic delays of 15 or 30 minutes. However, the combination of
alpha-ICAM-1 (15 minutes after embolization) and tPA (2 hours after
embolization) significantly improved neurologic outcome even though neither
substance was effective alone at these postembolization delays. These findings
suggest that prevention of leukocyte adhesion increases the postischemic
duration at which thrombolytic therapy remains effective
Keywords: AIR-EMBOLISM/cerebral embolism/CEREBRAL-ISCHEMIA/EMBOLIC
STROKE/INTERCELLULAR-ADHESION MOLECULE/MYOCARDIAL
INJURY/POLYMORPHONUCLEAR
LEUKOCYTES/prevention/REPERFUSION
INJURY/SKELETAL-MUSCLE/stroke/SYSTEM
ISCHEMIC-INJURY/thrombolysis/thrombolytic therapy/TISSUE
PLASMINOGEN-ACTIVATOR
Adams, R.J. (1995), Management Issues for Patients with Ischemic Stroke. Neurology,
45 (2), S15-S18.
Abstract: This review briefly summarizes the acute management of cerebral infarction
and cardiac comorbidity in patients with stroke, with a focus on more general
aspects of care. Important aspects of the acute management of cerebral infarction
are its prompt recognition, use of appropriate emergency medical services,
including 911, initial treatment, and prevention of complications. Secondary
prevention begins with the diagnostic workup for the cause of the initial stroke.
Although the optimal workup depends on the patient, a minimal workup consists
of a history and physical examination sufficient to establish vascular risk factors
and the neurologic and medical status of the patient, basic laboratory tests, EGG,
chest x- ray, cranial CT, evaluation of carotid arteries, and a search for cardiac
sources and the presence of atrial fibrillation. Further workup may include a
search for coagulopathies, less common sources of embolism, and intracranial
intravascular disease. Better education of patients at risk is of vital importance.
Patients with cerebral infarction share vascular risk factors with those who have
coronary disease, and the presence of both coronary and cerebrovascular disease
is highly likely. The likelihood of finding coronary artery disease in patients with
transient ischemic attack and ischemic stroke with noninvasive testing, as well as
management recommendations for these patients are reviewed
Keywords: atrial fibrillation/carotid/carotid arteries/CEREBRAL-
ISCHEMIA/cerebrovascular
disease/CEREBROVASCULAR-DISEASE/chest/comorbidity/complications/cor
onary disease/CORONARY-ARTERY
DISEASE/CT/education/evaluation/fibrillation/history/ischemic
stroke/PREVALENCE/prevention/risk/risk factors/stroke/transient/transient
ischemic attack/treatment/vascular
Sacco, R.L. (1995), Risk-Factors and Outcomes for Ischemic Stroke. Neurology, 45 (2),
S10-S14.
Abstract: Stroke continues to have a great impact on public health in the United States.
Stroke is frequent, recurring, and is more often disabling than fatal. The annual
incidence of new strokes in the United States is nearly one half million, with over
3 million stroke survivors alive today. Identifying risk factors for initial ischemic
stroke, as well as characterizing the determinants of outcome (stroke recurrence
and mortality) after ischemic stroke, is the basis for stroke prevention strategies.
Modifiable and nonmodifiable risk factors for ischemic stroke have been
identified and include age; gender; race/ethnicity; heredity; hypertension; cardiac
disease, particularly atrial fibrillation; diabetes mellitus; hypercholesterolemia;
cigarette smoking; and alcohol abuse. New risk factors, such as hypercoagulable
states and patent foramen ovale, are currently being investigated. Follow-up
studies have quantified case- fatality rates, early recurrence risk, and long-term
mortality and recurrence risks. Despite advances in stroke prevention strategies
and treatments, stroke recurrence is still the major threat to any stroke survivor.
A major goal set by the Public Health Service in its National Health Promotion
and Disease Prevention Objectives for the year 2000 is ''to reduce stroke deaths
to no more than 20 per 100,000.'' Part of this can be achieved if the risk of stroke
recurrence is reduced. However, the frequency and determinants of stroke
recurrence are poorly understood. Data from epidemiologic studies can help
identify risk factors and outcomes after ischemic stroke, as well as the selection
of high-risk individuals for focused risk-factor modification. Current information
on these topics is discussed
Keywords: atrial fibrillation/ATRIAL-FIBRILLATION/BLACKS/case
fatality/CHANGING PATTERN/DATA-BANK/DECLINE/diabetes
mellitus/fibrillation/health/HYPERTENSION/incidence/ischemic
stroke/MORTALITY/patent foramen ovale/prevention/RECURRENCE/risk/risk
factors/smoking/stroke/stroke prevention/SURVIVAL/TRENDS
Bruno, A., Carter, S., Qualls, C. and Nolte, K.B. (1996), Incidence of spontaneous
intracerebral hemorrhage among Hispanics and non-Hispanic whites in New
Mexico. Neurology, 47 (2), 405-408.
Abstract: Objective: To compare the incidence of spontaneous intracerebral hemorrhage
(ICH) among Hispanics and non-Hispanic whites living in Bernalillo County,
NM. Background: There are differences in cerebrovascular disease incidence
between racial and ethnic groups. Knowing these differences is likely to optimize
stroke prevention and evaluation. Methods: Medical records review of all
possible cases of ICH occurring between January 1, 1993 and December 31,
1993 among residents of Bernalillo County, NM, in all local hospitals. Hospital
records were identified by ICD-9-CM. codes. Also, State Medical Examiner
records review for additional ICH cases occurring during the same time interval.
The 1990 U.S. census provided the population base. Results: There were 47
spontaneous ICHs among 267,965 non-Hispanic whites and 39 spontaneous
ICHs among 178,310 Hispanics. Incidence of ICH rises exponentially with age
in both groups. The age- and sex-adjusted total annual incidence of ICH per
100,000 people is 16.6 among non-Hispanic whites and 34.9 among Hispanics
(relative risk for Hispanics 2.10, 95% confidence interval 1.35 to 3.26, p =
0.001). The age-adjusted incidence rates among men and women are not
significantly different in either ethnic group. Conclusion: The incidence of
spontaneous ICH among Hispanic residents of Bernalillo County, NM, is
approximately twice that among non- Hispanic whites. The reasons for this
difference require further investigation
Keywords: ALCOHOL-USE/BLACKS/cerebrovascular
disease/CEREBROVASCULAR-DISEASE/Hispanics/intracerebral
hemorrhage/prevention/RISK-FACTORS/STROKE/stroke prevention
Leibson, C.L., Hu, T., Brown, R.D., Hass, S.L., OFallon, W.M. and Whisnant, J.P.
(1996), Utilization of acute care services in the year before and after first stroke:
A population-based study. Neurology, 46 (3), 861-869.
Abstract: There is a need for accurate population-based data on the utilization of medical
resources after stroke. The present study used the Rochester Stroke Registry to
identify all Rochester, Minnesota residents with confirmed first stroke
(hospitalized and nonhospitalized) during the period of 1987 to 1989 (n = 292).
Events were categorized by type of stroke and assigned Rankin severity.
Inpatient and outpatient acute care activity for the 12 months before and after
stroke for each individual were obtained from billing tapes provided by Mayo
Clinic, Olmsted Medical Group, and affiliated hospitals. These providers account
for >95% of acute care received by Rochester residents. The results showed that
despite high poststroke mortality, total charges in the year after stroke were 3.4
times those for the previous year. Although greater than 50% of utilization in the
year poststroke occurred within the first 30 days, mean monthly charges for acute
care remained significantly above prestroke levels for up to 5 months after the
event. Poststroke charges per person-day of follow-up were significantly higher
for individuals who were hospitalized for the event, who had subarachnoid
hemorrhage, whose stroke occurred after admission to the hospital for another
reason, and who died within 7 days. Significantly lower poststroke charges were
evident for persons with mild cerebral infarctions and persons whose stroke
occurred in a nursing home. Neither prestroke utilization, age category, nor sex
were predictive of poststroke charges. The unique population-based data
presented here have important implications for efforts toward stroke prevention,
intervention, and cost containment
Keywords: hemorrhage/INCIDENCE
RATES/mortality/prevention/RECORD/severity/stroke/stroke prevention
Miller, V.T., Pearce, L.A., Feinberg, W.M., Rothrock, J.F., Anderson, D.C. and Hart,
R.G. (1996), Differential effect of aspirin versus warfarin on clinical stroke types
in patients with atrial fibrillation. Neurology, 46 (1), 238-240.
Abstract: The Stroke Prevention in Atrial Fibrillation II study compared the efficacy and
safety of aspirin and warfarin in patients with atrial fibrillation. Three
neurologists, blinded to patient therapy, categorized the pathophysiology of
ischemic strokes that occurred in the trial based on predetermined clinical criteria.
Upon analyzing the patients being treated with these two drugs, warfarin proved
significantly more effective than aspirin in preventing cardioembolic strokes (p =
0.005) and strokes of uncertain pathophysiology (p = 0.01). There was no
significant difference in the efficacy for prevention of noncardioembolic strokes
Keywords: aspirin/atrial fibrillation/fibrillation/prevention/safety/stroke/warfarin
Holloway, R.G., Witter, D.M., Lawton, K.B., Lipscomb, J. and Samsa, G. (1996),
Inpatient costs of specific cerebrovascular events at five academic medical
centers. Neurology, 46 (3), 854-860.
Abstract: We estimated the hospital costs for patients with different cerebrovascular
events and applied patient and administrative variables to explain the variance of
the cost estimates with particular attention to the relationship between patient age
and cost. The study sample was drawn from an administrative data set of all
hospital discharges from five academic medical centers for the 1992 calendar
year. Using International Classification of Diseases (ICD-9-CM) primary
diagnosis codes, cases were classified into cerebrovascular subgroups:
subarachnoid hemorrhage (SAH), intracerebral hemorrhage (ICH), ischemic
cerebral infarction (ICI), and transient ischemic attack (TIA). The ICD-9-driven
data file was supplemented with billing data containing inpatient charges
reported in UB-82 format. Costs were imputed by applying Medicare
charge-to-cost ratios and regional wage adjustments to the billing data. We
estimated relationships between inpatient costs and a number of demographic
and administrative variables. A statistically significant difference was found
between cerebrovascular subgroups for both the mean cost per discharge (p 18 to 45 years were
identified from the Indiana University and Northwestern University Young
Adults Stroke Registries. Validated criteria were used to subtype ischemic stroke
as atherothrombotic (AT), cardioembolic (CE), small-vessel (SV), other
determined cause, or unknown cause. Ninety-two children and 116 young adults
were identified. Stroke subtypes in children/young adults (percentages) were as
follows: AT 0/16 (p 65 years, 3.7; 95%
CI, 1.1 to 12.3), and the intensity of oral anticoagulation (RR, 1.8 for each 0.5
international normalized ratio [INR] unit increase; 95% Cl, 1.5 to 2.3). The
optimal intensity of oral anticoagulant therapy was 2.5 to 3.5 INR; the best target
value was 3.0 INR. Conclusion: The risk of hemorrhage with anticoagulant
therapy is high in patients with ischemic stroke of arterial origin but is mainly
confined to early use and elderly patients
Keywords: age/anticoagulant/anticoagulant
therapy/anticoagulation/bleeding/cerebral/cerebral ischemia/death/elderly/elderly
patients/hemorrhage/incidence/INR/international normalized
ratio/ischemia/ischemic/ischemic
stroke/MYOCARDIAL-INFARCTION/Netherlands/OPTIMAL
INTENSITY/oral anticoagulant therapy/oral anticoagulation/prevention/relative
risk/risk/stroke/THERAPY/thromboembolic
events/thromboembolism/treatment/use/WARFARIN
Hassaballa, H., Gorelick, P.B., West, C.P., Hansen, M.D. and Adams, H.P. (2001),
Ischemic stroke outcome - Racial differences in the trial of danaparoid in acute
stroke (TOAST). Neurology, 57 (4), 691-697.
Abstract: Objective: To determine racial differences in baseline stroke risk factors and
other measures in the Trial of ORG 10172 in Acute Stroke Therapy (TOAST).
Differences in these factors could influence response to acute stroke therapy and
overall stroke outcome. Methods: The authors compared baseline demographic,
medical, stroke, physical examination, CT, laboratory, and neurologic factors
among 292 African-American and 801 white patients who enrolled in the
TOAST study. TOAST compared danaparoid (ORG 10172) with placebo among
acute ischemic stroke patients who were treated within 24 hours of stroke onset.
Results: African-Americans were younger and more frequently had hypertension,
diabetes mellitus, congestive heart failure, and prior strokes. In addition, African-
Americans had higher mean diastolic blood pressure, more lacunar strokes, and
more severe prestroke disability. There were no significant differences between
African-Americans and white patients in outcomes at 7 days, overall number of
adverse experiences, or occurrence of serious bleeds or hemorrhagic
transformations. However, there was a trend toward a higher rate of favorable
outcomes in white patients at 7 days. There was no significant difference in very
favorable outcome at 3 months between African-American and white patients,
but significantly more white patients had favorable outcome at 3 months.
Conclusion: Although African-Americans possess a number of factors that
should predict higher rates of poor stroke outcome after acute therapy, they have
the capacity to respond similarly to white patients after acute stroke therapy.
Perhaps younger age and presence of lacunar infarction are stronger predictors of
good outcomes than was appreciated previously
Keywords: acute/acute ischemic stroke/acute stroke/acute stroke therapy/African
American/African
Americans/AFRICAN-AMERICANS/age/ATRIAL-FIBRILLATION/blood
pressure/congestive heart failure/CT/diabetes/diabetes mellitus/diastolic blood
pressure/disability/ETHNIC-DIFFERENCES/heart/heart
failure/hypertension/infarction/ischemic/ischemic stroke/lacunar
infarction/medical/NORTHERN
MANHATTAN/ORG-10172/outcome/POPULATION/PREDICTORS/PREVEN
TION/PROGNOSIS/racial differences/risk/risk factors/SEVERITY/stroke/stroke
outcome/therapy/TICLOPIDINE/TOAST/trial
Muller, T.H. (2001), Inhibition of thrombus formation by low-dose acetylsalicylic acid,
dipyridamole, and their combination in a model of platelet-vessel wall interaction.
Neurology, 57 (5), S8-S11.
Abstract: Effects of low-dose acetylsalicylic acid (ASA, 50 mg/day), dipyridamole
(sustained-release preparation 400 mg/day), and their combination were
investigated in a model of human platelet-vessel wall interaction. In a
randomized, double-blind clinical pharmacology trial in 96 healthy subjects, the
inhibition of mural platelet thrombus was measured ex vivo using blood samples
collected both before and 2 hours after a 3.5-day treatment with ASA,
dipyridamole, ASA combined with dipyridamole, or placebo. Both the size and
the number of platelet thrombi adherent to a thrombogenic matrix after a 15-
minute flow experiment were identified by automated fluorescence microscopy.
ASA treatment alone reduced the mean size of all thrombi by about 45%, and
dipyridamole alone achieved an approximate 17% reduction in the mean size of
all thrombi. The combination of both agents had an additive effect. Formation of
the subpopulation of very large thrombi was reduced by ASA and dipyridamole
to a similar extent, with their combination producing an effect at least twice as
strong as that witnessed in a single treatment. These results suggest that ASA and
dipyridamole affect platelet thrombus growth by different mechanisms of action.
These findings provide the pharmacologic rationale for the combination of ASA
(suppressing the synthesis of prothrombotic thromboxane A(2)) and
dipyridamole (by feedback inhibition of platelet activation via local
accumulation of adenosine) as a highly effective and safe combination for
secondary prevention of stroke. They are consistent with the clinical findings of
the Second European Stroke Prevention Study (ESPS-2). In this large trial, the
addition of dipyridamole (400 mg/day in a sustained-release preparation) to
aspirin (50 mg/day) doubled the efficacy of aspirin in the secondary prevention
of stroke without increasing the risk for bleeding
Keywords: acetylsalicylic
acid/activation/ADENOSINE/aspirin/bleeding/combination/dipyridamole/fluores
cence microscopy/formation/Germany/human/pharmacology/platelet/platelet
activation/prevention/randomized/risk/secondary/secondary
prevention/stroke/thrombus/treatment/trial
Catella-Lawson, F. (2001), Vascular biology of thrombosis - Platelet-vessel wall
interactions and aspirin effects. Neurology , 57 (5), S5-S7.
Abstract: The antithrombotic effect of aspirin has long been recognized, and
administration of low doses (80-60 mg/day) for the prevention of ischemic
events in patients with coronary artery disease (CAD) is now generally
considered to be routine practice. The action of aspirin derives mostly from the
selective inhibition of cyclo-oxygenases (Cox). These enzymes (Cox-1 and
Cox-2) catalyze the synthesis of eicosanoids, which play an important part in
platelet-vessel wall interactions. Cox-1 catalyzes the synthesis of thromboxane
A(2), (Tx-A(2)), which causes platelet activation, vasoconstriction, and smooth
muscle proliferation. Tx-A(2) levels are elevated in conditions associated with
platelet activation, including unstable angina and cerebral ischemia. Conversely,
Cox-2 controls the synthesis of prostacyclin (PGI(2)), a local platelet regulator
with an effect opposite to that of Tx-A(2). PGI(2), is produced as a compensatory
response to increases in Tx-A(2) during ischemic events. Aspirin is a more
potent inhibitor of Cox-1 than of Cox-2, unlike other non-steroidal
anti-inflammatory drugs (NSAIDs), which have limited selectivity. Aspirin at
low doses selectively inhibits the formation of Tx-A(2) without inhibiting the
basal biosynthesis of cardioprotective PGI(2),. Furthermore, aspirin causes
complete enzyme inhibition, without the recovery of enzyme activity at trough
drug levels associated with conventional NSAIDs. The effect of aspirin in the
prevention of ischemic events has been well documented in many recent clinical
trials involving more than 50,000 patients with CAD. It is clear from these
studies that aspirin, alone or in combination with other antithrombotics,
significantly reduces the incidence of cardiovascular death, stroke, and
myocardial infarction
Keywords:
ACTIVATION/administration/angina/antithrombotic/antithrombotics/aspirin/BI
OSYNTHESIS/cardiovascular/cerebral/cerebral
ischemia/CEREBRAL-ISCHEMIA/clinical trials/combination/coronary artery
disease/CYCLOOXYGENASE-2/death/disease/drugs/formation/incidence/infarc
tion/INHIBITION/ischemia/ischemic/LOW-DOSE
ASPIRIN/muscle/myocardial/myocardial infarction/NONSTEROIDAL
ANTIINFLAMMATORY DRUGS/PHARMACOLOGY/platelet/platelet
activation/PREVENTION/smooth/STROKE/thrombosis/thromboxane
A(2)/trials/unstable angina
Fieschi, C. and Falcou, A. (2001), Advances in stroke management: Update - Keynote
address. Neurology, 57 (5), S82-S86.
Abstract: "Acute strokes are here to stay": this could be the sad conclusion after decades
of stroke research. Generalized prevention of ischemic stroke is not fully
successful. After the decline in stroke incidence observed by 1970, partly related
to better management of vascular risk factors, there has again been an increase in
stroke frequency all around the world. This phenomenon may be explained by
the lack of educational modalities for modification of lifestyle behavior, the
small impact of high-risk individual prevention strategy, and the lack of rationale
and guidelines for multiple approaches. In the meantime, the benefits of acute
intensive management of stroke have been demonstrated. There is now
considerable evidence that careful monitoring and management of general and
cerebral functions in a dedicated stroke unit or by a specialized stroke team are
superior to management in a neurologic or general ward. Currently, one way of
optimizing limited personnel resources is to connect the stroke unit of a main
hospital with peripheral hospitals via a computer network. Experts in the central
stroke unit can then make on-line evaluations of CT and ultrasound examinations
performed in the local hospital and recommend the best course of patient
management. This new approach of treating stroke as an emergency will also
require educational programs directed at the general public, general practitioners,
and primary and emergency department physicians, to teach the recognition of
stroke symptoms and the importance of treating stroke with the same urgency as
for myocardial infarction (MI)
Keywords: acute/ATRIAL-FIBRILLATION/behavior/BLOOD-
PRESSURE/cerebral/CLINICAL-PRACTICE/CT/guidelines/high
risk/hospital/hospitals/HYPERTENSION/incidence/infarction/ischemic/ischemic
stroke/lifestyle/management/monitoring/MORTALITY/myocardial/myocardial
infarction/POPULATION/PREVENTION/primary/research/risk/risk
factors/RISK-FACTORS/SECULAR TRENDS/stroke/stroke incidence/stroke
management/stroke team/stroke unit/symptoms/ultrasound/vascular/vascular
risk/vascular risk factors/WARFARIN
Wahl, A., Meier, B., Haxel, B., Nedeltchev, K., Arnold, M., Eicher, E., Sturzenegger, M.,
Seiler, C., Mattle, H.P. and Windecker, S. (2001), Prognosis after percutaneous
closure of patent foramen ovale for paradoxical embolism. Neurology, 57 (7),
1330-1332.
Abstract: The long-term risk and risk factors for recurrent embolism after percutaneous
closure of patent foramen ovale (PFO) were investigated in 152 consecutive
patients with presumed paradoxical embolism. During follow-up, the actuarial
freedom from recurrent embolism was 95.1% at 1 year, and 90.6% at 2 and 6
years. A residual shunt after percutaneous PFO closure was a predictor for
recurrence (RR 5.3; 95% CI 1.3 to 21.0; p = 0.02). Randomized trials comparing
medical treatment with percutaneous PFO closure in the prevention of recurrent
embolism are in progress
Keywords: CEREBROVASCULAR EVENTS/CRYPTOGENIC
STROKE/embolism/foramen ovale/medical/medical treatment/paradoxical
embolism/patent/patent foramen ovale/prevention/recurrence/residual/risk/risk
factors/shunt/SURGICAL CLOSURE/Switzerland/TERM RISK/treatment/trials
Catto, A.J. (2001), Genetic aspects of the hemostatic system in cerebrovascular disease.
Neurology, 57 (5), S24-S30.
Abstract: Despite considerable research into the pathogenesis of cerebrovascular disease
(CVD), acute stroke is the third most common cause of mortality in the Western
world. The clinical management of acute stroke is largely supportive, although
evidence is emerging for the benefit of early pharmacologic intervention. Even
when the benefits of these therapies are accounted for, a significant proportion of
patients remain disabled or die. Accordingly, stroke prevention is likely to offer
the most effective manner of reducing stroke incidence. However, effective
prevention depends on a reliable means of identifying and treating the risk
factors associated with stroke and possibly targeting preventive measures at
high-risk groups. Atherosclerosis is the process responsible for the development
of ischemic CVD, and evidence is accumulating to suggest that these disorders
are multifactorial, resulting from a complex series of interactions between genes
and the environment. The outward expression of the disease, or the disease
phenotype, is in part the product of gene-gene and gene- environment
interactions. Research methods harnessing molecular biology techniques,
including polymerase chain reaction (PCR) and sequencing have, in contrast to
coronary artery disease (CAD), been under-utilized when it comes to furthering
our understanding of the molecular epidemiology of CVD. This article reviews
the evidence that stroke has a genetic basis and that the hemostatic system is an
important risk factor for stroke. The genetic regulation of a number of these
hemostatic proteins is evaluated
Keywords: acute/acute stroke/BLOOD-
COAGULATION/cerebrovascular/cerebrovascular disease/COAGULATION-
FACTOR-V/COMMON POLYMORPHISM/coronary artery
disease/development/disease/England/epidemiology/FACTOR-XIII
GENE/gene/genes/genetic/high
risk/incidence/ischemic/ISCHEMIC-HEART-DISEASE/management/mortality/
MYOCARDIAL-INFARCTION/PLASMA-FIBRINOGEN
CONCENTRATION/PLASMINOGEN-ACTIVATOR
INHIBITOR-1/prevention/research/risk/risk factor/risk
factors/RISK-FACTORS/stroke/stroke incidence/stroke prevention/VENOUS
THROMBOSIS
Koennecke, H.C. and Leistner, S. (2001), Prophylactic antipyretic treatment with
acetaminophen in acute ischemic stroke: A pilot study. Neurology, 57 (12),
2301-2303.
Abstract: Fever is associated with poor outcome in acute stroke. Forty- two consecutive,
normothermic patients with acute ischemic stroke were, within 24 hours from
symptom onset, randomized to either receive 4 g acetaminophen daily (n = 20) or
matched placebo (n = 22). Fever of greater than 37.5 degreesC occurred in
36.4% of patients in the placebo group, compared with 5.0% in the
acetaminophen group (Fisher's exact test, p = 0.014). Prophylactic antipyretic
treatment with acetaminophen may be effective in the prevention of fever after
acute ischemic stroke
Keywords: acute/acute ischemic stroke/acute
stroke/Germany/HYPOTHERMIA/ischemic/ischemic
stroke/NEUROLOGY/outcome/prevention/randomized/stroke/TEMPERATURE
/treatment/USA
Dufouil, C., Kersaint-Gilly, A., Besancon, V., Levy, C., Auffray, E., Brunnereau, L.,
Alperovitch, A. and Tzourio, C. (2001), Longitudinal study of blood pressure
and white matter hyperintensities - The EVA MRI cohort. Neurology, 56 (7),
921-926.
Abstract: Objective: To investigate the relationship between baseline hypertension and
severity of white matter hyperintensities (WMH) at 4-year follow-up in a sample
of subjects aged 59 to 71 years old at entry. Methods: Subjects were participants
in the Epidemiology of Vascular Ageing study, a longitudinal study on vascular
aging and cognitive decline. At 4-year follow-up, 845 subjects had a cerebral
MRI. MRI examinations were read by a single rater to determine the severity of
WMH, ranging from absent to severe. Hypertension at each wave of the study
was defined as systolic blood pressure greater than or equal to 160 mm Hg,
diastolic blood pressure greater than or equal to 95 mm Hg, or use of
antihypertensive medication. Results: Hypertension at baseline was significantly
associated with an increased risk of having severe WMH at 4-year follow-up.
When taking into account both blood pressure levels and antihypertensive drug
intake, analysis showed that the risk of having severe WMH was significantly
reduced in subjects with normal blood pressure taking antihypertensive
medication compared with those with high blood pressure taking
antihypertensive agents. Cross-sectional relationships between hypertension and
WMH at 4-year follow-up showed that the frequency of severe WMH was
significantly higher in people who were hypertensive at both baseline and 4-year
follow-up than those who were hypertensive only at I-year follow-up.
Conclusions: Hypertension is a major risk factor for severe WMH. Subjects
taking antihypertensive drugs and who have controlled blood pressure had a
reduced risk of severe WMH. Longitudinal studies are needed to investigate
whether reduction of the development of WMH, by treatment and prevention of
hypertension, might reduce the subsequent risk of cognitive deterioration or
stroke
Keywords: aged/aging/ALZHEIMERS-DISEASE/antihypertensive
agents/antihypertensive drugs/blood pressure/BRAIN/CARDIOVASCULAR
HEALTH/cerebral/COGNITIVE FUNCTION/development/diastolic blood
pressure/drugs/FOLLOW-UP/high blood pressure/hypertension/ISOLATED
SYSTOLIC HYPERTENSION/LESIONS/longitudinal study/MRI/OLDER
ADULTS/prevention/risk/risk factor/RISK-
FACTORS/severity/STROKE/systolic blood/systolic blood
pressure/treatment/use/vascular/white matter
Demond, D.W., Moroney, J.T., Sano, M. and Stern, Y. (2002), Mortality in patients with
dementia after ischemic stroke. Neurology, 59 (4), 537-543.
Abstract: Objective: Although dementia is typically considered to be a consequence of a
variety of neurologic diseases, it can also serve as a risk factor for other adverse
outcomes. The authors investigated dementia as a predictor of long-term survival
among patients with ischemic stroke. Methods: Neurologic, neuropsychological,
and functional assessments were administered to 453 patients (mean age +/- SD,
72.0 +/- 8.3 years) 3 months after ischemic stroke. The authors diagnosed
dementia in 119 (26.3%) of the patients using modified Diagnostic and Statistical
Manual of Mental Disorders, Revised 3rd Edition, criteria requiring deficits in
memory and two or more additional cognitive domains as well as functional
impairment. Dementia as a predictor of long-term survival during up to 10 years
of follow-up was then investigated. Results: The mortality rate was 15.90 deaths
per 100 person- years among patients with dementia and 5.37 deaths per 100
person-years among nondemented patients. A Cox proportional hazards analysis
found that the relative risk (RR) of death was increased in association with
dementia (RR = 2.4; 95% CI = 1.6 to 3.4), adjusting for the following: a major
hemispheral stroke syndrome (RR = 1.4); a middle cerebral artery territory index
stroke (RR = 1.7); a Stroke Severity Scale score of greater than or equal to4,
representing more severe stroke (RR = 1.8); atrial fibrillation (RR = 1.8);
congestive heart failure (RR = 2.2); recurrent stroke occurring during follow-up
(RR = 3.9); arid demographic variables. The risk of death increased in
association with the severity of dementia, but it did not differ by dementia
subtype. Conclusions: Dementia is a significant independent risk factor for
reduced survival after ischemic stroke, adjusting for other recognized predictors
of mortality. The authors hypothesize that patients with dementia are at an
elevated risk of mortality because of their increased burden of cerebrovascular
disease, a tendency toward undertreatment for stroke prophylaxis among
clinicians, or patient noncompliance with treatment regimens
Keywords: 5-YEAR FOLLOW-UP/age/ALZHEIMERS-DISEASE/atrial/atrial
fibrillation/cerebral/cerebral artery/cerebrovascular/cerebrovascular
disease/congestive heart
failure/DEATH/dementia/disease/diseases/fibrillation/heart/heart
failure/INCIDENT DEMENTIA/ischemic/ischemic stroke/LONG-TERM
SURVIVAL/middle cerebral artery/mortality/mortality rate/MULTI-INFARCT
DEMENTIA/POPULATION/predictors/prophylaxis/recurrent stroke/relative
risk/risk/risk factor/RISK-FACTORS/SECONDARY
PREVENTION/severity/stroke/survival/treatment/VASCULAR DEMENTIA
Herman, S.T. (2002), Epilepsy after brain insult - Targeting epileptogenesis. Neurology,
59 (9), S21-S26.
Abstract: Seizures and epilepsy are common sequelae of acute brain insults such as
stroke, traumatic brain injury, and central nervous system infections. Early, or
acute symptomatic, seizures occur at the time of the brain insult and may be a
marker of severity of injury. A cascade of morphologic and biologic changes in
the injured area over months to years leads to hyperexcitability and
epileptogenesis. After a variable latency period, late unprovoked seizures and
epilepsy occur. The latent period may offer a therapeutic window for the
prevention of epileptogenesis and the development of unprovoked seizures and
epilepsy. Administration of anticonvulsant drugs following acute brain insults
has thus far failed to prevent late epilepsy. Proper choice of disease models and
target populations will aid in the development of putative antiepileptogenic
agents. The incidence, timing, and pathophysiology of common epileptogenic
brain injuries, including head trauma, cerebrovascular disease, brain tumors,
neurosurgical procedures, neurodegenerative conditions, status epilepticus, and
febrile seizures, are reviewed
Keywords: acute/brain/brain injury/central nervous
system/cerebrovascular/cerebrovascular
disease/development/disease/drugs/EPIDEMIOLOGY/epilepsy/FIRST
STROKE/HEAD-INJURY/HEMORRHAGE/incidence/pathophysiology/POPU
LATION/POSTTRAUMATIC
SEIZURES/PREVALENCE/PREVENTION/RISK/severity/status/STATUS
EPILEPTICUS/stroke/timing/traumatic brain injury
Chaturvedi, S. and Fessler, R. (2002), Angioplasty and stenting for stroke prevention -
Good questions that need answers. Neurology, 59 (5), 664-668.
Abstract: Extracranial and intracranial angioplasty and stenting of the cerebral vessels
are being performed more frequently. One clinical trial demonstrated equivalent
outcomes between extracranial carotid angioplasty and carotid endarterectomy,
but the results in both groups were suboptimal. Concerns remain about the
iatrogenic stroke rate after angioplasty, especially for asymptomatic patients.
Angioplasty, with or without stent placement, also offers a potential new
therapeutic approach for patients with intracranial stenosis and vertebrobasilar
lesions, although these procedures have been performed in uncontrolled fashion
Keywords: angioplasty/ARTERY-STENOSIS/asymptomatic/carotid/carotid
angioplasty/CAROTID ENDARTERECTOMY/cerebral/cerebral
vessels/CEREBRAL- ISCHEMIA/clinical trial/endarterectomy/INITIAL
EXPERIENCE/INTRACRANIAL
STENOSIS/PLACEMENT/prevention/stenosis/stent/stent
placement/stenting/stroke/stroke prevention/SURGERY/TRANSLUMINAL
ANGIOPLASTY/TRIAL/vessels
Coull, B.M., Williams, L.S., Goldstein, L.B., Meschia, J.F., Heitzman, D., Chaturvedi,
S., Johnston, K.C., Starkman, S., Morgenstern, L.B., Wilterdink, J.L., Levine,
S.R. and Saver, J.L. (2002), Anticoagulants and antiplatelet agents in acute
ischemic stroke - Report of the Joint Stroke Guideline Development Committee
of the American Academy of Neurology and the American Stroke Association (a
division of the American Heart Association). Neurology, 59 (1), 13-22
Keywords: acute/acute ischemic stroke/antiplatelet/antiplatelet
agents/ASPIRIN/CONTROLLED TRIAL/ischemic/ischemic
stroke/MOLECULAR-WEIGHT
HEPARIN/NEUROLOGY/PREVENTION/stroke
Reeves, M.J., Hogan, J.G. and Rafferty, A.P. (2002), Knowledge of stroke risk factors
and warning signs among Michigan adults. Neurology, 59 (10), 1547-1552.
Abstract: Objective: To assess the knowledge of stroke risk factors and warning signs in
a representative statewide sample of Michigan adults. Methods: Respondents to
the 1999 Michigan Behavioral Risk Factor Survey, a random-digit-dialed
statewide survey of >2,500 adults, were asked to report up to three risk factors
and warning signs-for stroke. Predictors of inadequate knowledge (defined as not
reporting any correct responses) of stroke risk factors and warning signs were
identified using multiple logistic regression. Results: Eighty percent reported at
least one correct risk factor for stroke, and 28% reported three. The most
frequently mentioned risk factors were hypertension (32%), smoking (29%), and
physical inactivity (26%). Sixty-nine percent reported at least one correct
warning sign of stroke, but only 14% reported three. The most frequently
mentioned warning signs were sudden weakness or numbness (46%) and sudden
slurred speech, disorientation, or difficulty understanding (30%). Predictors for
inadequate knowledge of both stroke risk factors and warning signs were similar
and included age, race, sex, education, hypertension, and smoking. Conclusions:
Knowledge of stroke risk factors and warning signs was moderate at best. One in
five respondents was not aware of any stroke risk factors, and almost one in three
was not aware of any stroke warning signs. Stroke knowledge was poorest
among groups that have the highest risk of stroke
Keywords: adults/age/AWARENESS/EDUCATION/hypertension/ISCHEMIC
STROKE/knowledge/multiple logistic
regression/PERCEPTIONS/POPULATION/PREVENTION/race/risk/risk
factor/risk factors/sex/smoking/stroke/sudden/survey/SYMPTOMS
Ruland, S., Raman, R., Chaturvedi, S., Leurgans, S. and Gorelick, P.B. (2003),
Awareness, treatment, and control of vascular risk factors in African Americans
with stroke. Neurology, 60 (1), 64-68.
Abstract: Objective: To investigate control of risk factors in African American patients
with previous stroke. Methods: The baseline history, physical examination, and
laboratory data for 1,086 subjects enrolled in the African American Antiplatelet
Stroke Prevention Study from 1995 to 1999 were studied. The level of awareness,
pharmacologic treatment, and control of diabetes mellitus (casual plasma glucose
level greater than or equal to200 mg/dL), hypertension (blood pressure greater
than or equal to140/90 min Hg), and hypercholesterolemia (serum total
cholesterol level greater than or equal to240 mg/dL) were determined. Results:
Forty percent of subjects reported a history of diabetes mellitus or use of diabetic
medication, and 2% of the remaining subjects had a serum glucose level of
greater than or equal to200 mg/dL. Of those subjects known to be diabetic, 33%
had a serum glucose level of greater than or equal to200 mg/dL. A history of
hypertension or use of antihypertensive medication was reported in 87% of
subjects, and 48% of the remaining subjects were found to have a blood pressure
of greater than or equal to140/90 min Hg on exam. Of those subjects known to
be hypertensive by history, 73% were on antihypertensive medication, but only
30% of the treated subjects had a blood pressure under 140/90 min Hg. A history
of hypercholesterolemia or use of a lipid-lowering agent was reported in 40% of
subjects, and 24% of the remaining subjects had a cholesterol level of greater
than or equal to240 mg/dL. Use of a lipid-lowering agent was reported in 43% of
subjects known to be hypercholesterolemic, and 38% of the
hypercholesterolemic subjects had a cholesterol level of 2:240 mg/dL.
Conclusion: Inadequate rates of awareness and control of cardiovascular disease
and stroke risk factors are seen in a clinical trial of African American stroke
patients and are comparable with those of previously published reports
Keywords: 3RD NATIONAL-HEALTH/African American/African
Americans/ATHEROSCLEROSIS RISK/awareness/blood
pressure/cardiovascular/cardiovascular disease/CHOLESTEROL/clinical
trial/control/diabetes/diabetes
mellitus/disease/glucose/history/hypercholesterolemia/HYPERTENSION/ISCH
EMIC STROKE/lipid lowering/lipid-lowering/NEUROLOGY/NORTHERN
MANHATTAN STROKE/NUTRITION EXAMINATION
SURVEY/PREVALENCE/PREVENTION/risk/risk factors/serum/stroke/stroke
patients/stroke risk factors/treatment/trial/US
POPULATION/USA/use/vascular/vascular risk/vascular risk factors
Gururaj, G., Satishchandra, P. and Subbakrishna, D.K. (1995), Epidemiologic Correlates
of Stroke Mortality - Observations from A Tertiary Institution. Neurology India,
43 (1), 29-34.
Abstract: Factors associated with stroke were studied by a combination of morbidity and
mortality analysis for the period 1986 to 1990, Strokes constituted 6.5-7.8
percent of total neurological registration over a five year period at NIMHANS,
Bangalore. The morbidity pattern revealed that stroke increases with increasing
age and was predominantly constituted by ischaemic strokes (73.1 percent),
Stroke in the young constituted 27.8 per cent of cas es, Analysis of one year
mortality series revealed that 32.5 percent of deaths were in the age group of less
than 40 years, Hypertension, alcoholism and smoking were the major risk factors
associated with stroke mortality to the extent of 32 percent, 12 percent and 11
percent of cases respectively, Aneurysms contributed for 10.0 percent of total
deaths among the various other conditions associated with stroke, The case
fatality rate was in the order of 25.1 percent, The present report emphasizes the
need for well designed analytical studies for identifying and qualifying risk
factors along with the focus on primary preventive measures through risk
approach for preventing morbidity and mortality from stroke in India
Keywords: case
fatality/EPIDEMIOLOGY/INDIA/MORBIDITY/MORTALITY/PREVENTION
/risk/RISK FACTORS/smoking/STROKE/YOUNG
Nagaraja, D., Gurmurthy, S.G., Taly, A.B., Subbakrishna, K. and Rao, B.S.S. (1998),
Risk factors for stroke: Relative risk in young and elderly. Neurology India, 46
(3), 183-184.
Abstract: Stroke is a leading cause of morbidity and mortality. A significant proportion
of stroke victims in India are below the age of 40 years and may have specific
risk factors. 101 patients (42 less than 40 years of age) of ischaemic stroke were
studied at NIMHANS to estimate the relative risk of various contributing factors.
Hypercholesterolaemia, hyperglycaemia and hypertension were more common in
elderly group, while smoking, alcohol and tobacco abuse were more prevalent in
younger age group (relative risk 1.2, 1.9 and 1.5 respectively), A better
understanding of these risk factors may play a key role in the prevention of
stroke in young
Keywords:
age/alcohol/CEREBROVASCULAR-DISEASE/elderly/hypertension/INDIA/mo
rbidity/mortality/prevention/relative risk/risk/risk
factors/smoking/stroke/tobacco/tobacco abuse/young stroke
Lechner, H. and Samastur, M. (1997), The Graz scale for the evaluation of high stroke
risk among normal volunteers. Neurology Psychiatry and Brain Research, 5 (1),
9-14.
Abstract: To identify those individuals in populations at high risk of stroke, a statistical
model has been developed. From a cohort of 1950 volunteers and 512 ischemic
stroke victims utilizing a case control design was developed after the participants
were matched for age and sex. For both groups equal information was available
on the association of well and less-well established cerebrovascular risk factors,
utilizing relevant laboratory data, and results of Doppler-Duplex scanning, EEG
and EGG. From the cohort 512 volunteers and patients were selected for the case
control design. The statistic model showed a specificity of 82% for recognizing
stroke and a sensitivity of 80.1% for detecting normal volunteers. Utilizing a
numeric scale ranging from 0-100, the population could be grouped according to
severity of its cerebrovascular risk for stroke. Utilizing this numeric scale, new
and more sensitive dimensions mere introduced for the evaluation of
cerebrovascular risk factors for stroke
Keywords:
age/BRAIN/cerebrovascular/control/EEG/evaluation/INFARCTION/ischemic/is
chemic stroke/POPULATION/PREVENTION/risk/risk
factors/severity/sex/stroke
Kornhuber, H.H. (1998), Prevention of cerebral microangiopathy and stroke. Neurology
Psychiatry and Brain Research, 5 (4), 205-208.
Abstract: Most cases of stroke are embolic and originate from the heart, not only
because of arrhythmia, but mainly from microangiopathy of the valves and aorta;
therefore hypertension is the dominant risk factor. In younger women nowadays
the combination of hormonal contraception and smoking is a factor. Stroke is
striking, but microangiopathy is more common. The metabolic syndrome
associated with abdominal obesity (insulin resistance, hyperinsulinemia,
hypertriglyceridemia and high blood pressure), estrogen deficiency after
menopause and old age are the main causes of microangiopathy. The main cause
of abdominal obesity and the metabolic syndrome is not caloric overnutrition,
but daily "normal" alcohol consumption. The obese on average eat less calories
than the lean. The fattening effect of alcohol is toxic, not caloric. A
cardioprotective effect of "normal" alcohol does not exist. The main points in
preventing microangiopathy and stroke are treatment of hypertension, estrogen
replacement, a "mediterranean" diet with fish, vegetables, green salads, fruit,
olive oil - and largely to avoid alcohol
Keywords: age/alcohol/ALCOHOL/blood pressure/BRAIN/cerebrovascular
disease/CORONARY HEART-DISEASE/diet/DIET/heart/high blood
pressure/hypertension/insulin
resistance/menopause/MORTALITY-RATES/obesity/OBESITY/prevention/risk
/smoking/stroke/treatment/valves/women
Lechner, H. and Hadjiev, D. (1998), Comparative epidemiological study on
cerebrovascular risk factors among Austrian and Bulgarian populations.
Neurology Psychiatry and Brain Research, 6 (3), 141-146.
Abstract: Cross-sectional and longitudinal population-based epidemiological studies
devoted to the cerebrovascular risk factors have been carried out in different
countries. Geographic variations in the risk-factor prevalence have been reported.
It has been found that hypertension, hypercholesterolaemia, overweight and
cigarette smoking are unevenly distributed in different regions of Europe and do
not share a common distribution pattern. It seems that the variations in stroke
incidence and mortality rates are due mainly to differences in the prevalence of
hypertension. Austrian-Bulgarian comparative population-based cross-sectional
epidemiological study was designed to assess the frequency of the
cerebrovascular risk factors among urban population of Austria and Bulgaria. For
this purpose a common protocol was used. Volunteers without clinical signs or
symptoms of cerebrovascular disease aged 49 to 74 years were enrolled in the
study. An uniform structured questionnaire, physical examinations, ECG and
battery of laboratory tests were employed. Hypertension was significant more
frequent among bulgarian population (61,2%) than among austrian population
(40,2%). The prevalence of cardiac abnormalities, cigarette smoking and
diabetes mellitus did not show significant differences between the two
populations. The less well- documented risk factor hypercholesterolaemia was
found in 41,7% among bulgarian population and in 31,7% among austrian cohort.
However the total cholesterol/HDL-cholesterol ratio was nearly the same among
the two populations. The concentrations of lipoprotein (a) were higher among
bulgarian townspeople. Physical inactivity was found to be more frequent among
austrian population, whereas elevated haematocrit prevailed among bulgarian
volunteers. It is worthy of note that the risk factor combinations were more
frequent among bulgarian population. The data obtained suggest that different
patterns of risk factors may exist. The high incidence and mortality rates from
stroke in Bulgaria could be explained by the high prevalence of hypertension and
excess salt intake. No doubt population-based epidemiological studies on the
cerebrovascular risk factors will contribute to elaboration of multimodal stroke
prevention programs
Keywords: aged/Austria/BRAIN/CASE-FATALITY/cerebrovascular/cerebrovascular
disease/cerebrovascular risk factors/cigarette
smoking/CIGARETTE-SMOKING/diabetes/diabetes mellitus/geographic
variations/haematocrit/hypertension/incidence/ISCHEMIC
STROKE/MORTALITY/PHYSICAL-ACTIVITY/population/population-based/
prevalence/PREVENTION/risk/risk factor/risk
factors/salt/smoking/stroke/STROKE INCIDENCE/stroke mortality/stroke
prevention/TRENDS/urban
Felber, S. and Fazekas, F. (1995), Magnetic-Resonance in Acute Stroke and Secondary
Prevention. Neuropsychiatrie, 9 (2), 56-61.
Abstract: Presently, magnetic resonance techniques are considered to supplement
computerized tomography in the diagnosis of acute stroke, because magnetic
resonance is not arbitrarily available and more expensive. However, during the
last decade, magnetic resonance has shown to be superior to computerized
tomography in virtually all features of acute stroke diagnosis. This includes the
early detection of ischemia and higher sensitivity towards lesions in the posterior
fossa, but also the reliable delineation of intracranial hemorrhage. In addition,
magnetic resonance is a multimodal technique and enables morphologic
diagnosis together with assessment of vascular pathology, diffusion perfusion
and metabolism within a single examination. These methods have already
become standard for stroke research in animals and are now increasingly
available at clinical scanners. In future, the primary use of computerized
tomography in stroke diagnosis will be justified only in a surrounding of
therapeutic nihilism. If therapeutic strategies, that have been shown successful in
animals, should be transferred to the treatment of patients, multimodal magnetic
resonance facilities have to be made available for the diagnosis of acute stroke in
humans
Keywords: BRAIN/diagnosis/hemorrhage/ischemia/MAGNET
RESONANCE/PERFUSION/SPECTROSCOPY/STROKE/TOMOGRAPHY/tre
atment/vascular
Niederkorn, K. and Schmidauer, C. (1995), The Significance of Neurosonographic
Methods in the Acute Treatment and Prevention of Stroke. Neuropsychiatrie, 9
(2), 49-51.
Abstract: In acute focal cerebrovascular events the rapid examination (within 24 hours)
of the extracranial brain arteries by means of Doppler and duplex sonography is
indicated to exclude high- grade stenoses and/or occlusions of these vessels.
Clinical symptoms suggesting occlusion of the middle cerebral artery of the
basilar artery with the potential need for cerebral thrombolysis require urgent
transcranial Doppler sonography. TCD is also indicated if vasospasm following
subarachnoid hemorrhage is suspected. Due to these facts stroke centers should
have 24-hour availability of the neurosonographic methods. These methods are
also a basic requirement for the evaluation of the vessels wall status of the brain
supplying arteries in the primary and secondary prevention of stroke
Keywords: CEREBRAL THROMBOLYSIS/DOPPLER SONOGRAPHY/DUPLEX
SONOGRAPHY/evaluation/focal/hemorrhage/prevention/RISK-FACTORS/seco
ndary prevention/STROKE/STROKE PREVENTION/SUBARACHNOID
HEMORRHAGE/thrombolysis/TRANSCRANIAL DOPPLER
SONOGRAPHY/vasospasm
Niederkorn, K., Podreka, I., Rumpl, E. and Wege, H. (2000), Carotid endarterectomy.
Neuropsychiatrie, 14 (1), 23-29.
Abstract: An annual stroke incidence of 1.9 - 4% has been reported for asymptomatic
carotid stenosis of more than 60% diameter reduction. In the ACAS
(Asymptomatic Carotid Artery Stenosis Study) trial the risk for stroke and death
over 5 years could be reduced from 11% to 5.1% by performing carotid
endarterectomy (CEA) in patients with greater than 60% Internal Carotid Artery
(ICA) stenosis. The existence of such a lesion, however, should not lead to a
mandatory CEA. Additional factors like degree of stenosis of more than 85%,
high vascular risk, clinically silent ipsilateral cerebral infarcts and rapid increase
of the degree of stenosis may be helpful to identify patients who are likely to
benefit from CEA. In symptomatic carotid stenosis with a diameter reduction of
70% and more, the results of the NASCET (North American Symptomatic
Carotid Endarterectomy Trial) study and of the ECST (European Carotid Surgery
Trial) study prove a significant risk reduction by CEA in relation to the
increasing degree of stenosis. This benefit is consistent over 8 years. The
NASCET results show that CEA allows a 10.1% absolute risk reduction over 5
years for 50 - 69% ICA stenosis. The indication for surgery in this group should
be established on the basis of the individual case. Patients with less than 50%
ICA stenosis did not benefit from surgery. In a recently published review of 2048
interventions, the method of percutaneous transluminal angioplasty with stenting
(PTAS) has a technical success rate of 98.6%. The morbidity was 4.4%, the
mortality 1.37%, the rate of re- stenosis at 6 months 4.8%. Prospective and
randomized trials are needed to evaluate this new method in comparison with
CEA. Until these multicenter trials are started. local series should be performed
in well defined indications on the basis of an interdisciplinary protocol approved
by the local ethics committee
Keywords: absolute risk/ANGIOGRAPHY/angioplasty/ARTERY
STENOSIS/asymptomatic/ASYMPTOMATIC PATIENTS/Austria/BALLOON
ANGIOPLASTY/carotid/carotid endarterectomy/carotid
stenosis/cerebral/death/endarterectomy/incidence/indication for
surgery/morbidity/mortality/North American/percutaneous transluminal carotis
angioplasty/PREVENTION/randomized/randomized
trials/review/risk/stenosis/STENT PLACEMENT/stenting/STROKE/stroke
incidence/surgery/trials/vascular/with stenting (PTAS)
Schmidt, R., Willeit, J. and Brainin, M. (2000), Stroke: Protective factors.
Neuropsychiatrie, 14 (1), 3-11.
Abstract: We reviewed the current literature on protective factors for stroke. Physical
activity and salt restriction have a proven effect with data for salt restriction
existing for stroke mortality only. There is evidence from observational but not
interventional studies for protective effects of fruit- and vegetable-rich nutrition,
optimal vitamin B-6, B-12 and folic acid plasma levels as well as
mild-to-moderate alcohol consumption. Cholesterol-lowering diet and drugs
other than statins yielded no reduction in stroke risk. Statins reduce strokes in
patients with myocardial infarction, yet interventional trials with stroke as the
primary outcome measure are still pending. Similar evidence exists in terms of
postmenopausal hormone replacement and blood donation in order to reduce the
body's iron pool. Vitamin E and beta-caroten supplements failed to decrease the
incidence of strokes in large trials. Similar findings have been reported for the
general use of acetylsalicylic acid. However, metaanalyses indicate that
acetylsalicylic acid may be beneficial in high- risk groups
Keywords: acetylsalicylic acid/ACUTE
MYOCARDIAL-INFARCTION/alcohol/Austria/CARDIOVASCULAR-DISEA
SE/CORONARY HEART-DISEASE/diet/drugs/fruit/high risk/HORMONE
REPLACEMENT THERAPY/incidence/infarction/MIDDLE-AGED
MEN/mortality/myocardial/myocardial
infarction/nutrition/outcome/PHYSICAL-ACTIVITY/PLASMA
HOMOCYSTEINE/postmenopausal hormone replacement/primary/primary
prevention/protection/protective factors/risk/RISK
FACTOR/salt/statins/stroke/stroke
mortality/trials/use/VASCULAR-DISEASE/VITAMIN-C
Horner, S., Schmidbauer, M., Schnaberth, G., Weiss, S., Niederkorn, K., Schmidt, R.,
Homann, C.N., Ott, E. and Hartung, H.P. (2000), Antiplatelet therapy in
secondary ischemic stroke prevention. Neuropsychiatrie, 14 (1), 12-22.
Abstract: The primary purpose of this overview is to provide an update on antiplatelet
drugs evaluated in clinical trials in order to evaluate treatment strategies in
secondary stroke prevention. Acetylsalicylic acid (ASS) has been the standard
reference agent in cerebrovascular disease and decreases events up to 25%.
High-dose versus low-dose trials confirmed the lack of dose-response
relationship. Based on the results of ESPS-2 the lowest effective dose of ASS is
50 mg daily. Impressive beneficial results have been reported from the ESPS-2
concerning the role of a combination therapy with a relative risk reduction (RR)
of 37% for the outcome of stroke with ASS plus dipyridamole (50/400 mg) in
comparison to 18% for ASS (50 mg) alone. TASS confirmed a higher benefit of
ticlopidine versus ASS with a RR of 21% (p = 0.024) for TIA and stroke,
however, ticlopidine therapy was associated with neutropenia. CAPRIE
compared the efficacy of clopidogrel (75 mg) versus ASS (325 mg) for a cluster
of ischemic events and showed a modest increase in effectiveness, an RR of 8.7
(p = 0.043) for clopidogrel. Tn summary, ASS (50 - 325 mg daily) can be
suggested for first choice in patients with primary stroke. An alternative to ASS
is ASS plus dipyridamole in patients with TIA, stroke recurrence or
thienopyridine intolerance. Clopidogrel is suggested in patients with combined
atherosclerotic diseases and replaces ticlopidine when ASS has failed or is not
tolerated
Keywords: ACETYLSALICYLIC-ACID/antiplatelet/antiplatelet agents/antiplatelet
drugs/ANTITHROMBOTIC
THERAPY/ASS/ATRIAL-FIBRILLATION/Austria/CEREBRAL-ISCHEMIA/c
erebrovascular/cerebrovascular disease/clinical
trials/CLOPIDOGREL/combination therapy/CONTROLLED
TRIAL/DIPYRIDAMOLE/disease/diseases/DRUGS/ischemic/ischemic
stroke/LOW-DOSE
ASPIRIN/neutropenia/outcome/prevention/primary/recurrence/relative
risk/risk/secondary stroke prevention/stroke/stroke prevention/stroke
recurrence/therapeutic guidelines/therapy/TIA/TICLOPIDINE/treatment/trials
Shenal, B.V., Harrison, D.W. and Demaree, H.A. (2003), The neuropsychology of
depression: A literature review and preliminary model. Neuropsychology Review,
13 (1), 33-42.
Abstract: Neurcipsychological research provides a useful framework to study emotional
problems, such as depression, and their correlates. This paper reviews several
prominent neuropsychological theories. Functional neuroanatomical systems of
emotion and depression are reviewed, including those that describe cerebral
asymmetries in emotional processing. Following the review, a model that is
composed of three neuroanatomical divisions (left frontal, right frontal, and right
posterior) and corresponding neuropsychological emotional sequelae within each
quadrant is presented. It is proposed that dysfunction in any of these quadrants
could lead to symptomatology consistent with a diagnosis of depression. The
proposed model combines theories of arousal, lateralization, and functional
cerebral space and lends itself to scientific methods of investigation. Accordingly,
research, prevention, and treatment programs in accordance with the proposed
model may promote an improved understanding of the neurcipsychological
mechanisms involved in depression
Keywords: AFFECTIVE STYLE/ASYMMETRY/cerebral/CEREBRAL
BLOOD-FLOW/correlates/depression/diagnosis/emotion/EMOTION/EXPRESS
ION/FACIAL AFFECT PERCEPTION/lateralization/literature
review/mechanisms/NEW-YORK/POSTSTROKE MOOD
DISORDERS/prevention/research/review/SEX-DIFFERENCES/STROKE
PATIENTS/theory/treatment/UNILATERAL BRAIN-DAMAGE/USA
Benjamin, M.S., Gillams, A.R. and Carter, A.P. (1997), Carotid MRA - What
advantages do the turbo field-echo and 3D phase-contrast sequences offer?
Neuroradiology, 39 (7), 469-473.
Abstract: Our purpose was to investigate some of the newer MR angiography (MRA)
techniques for studying the carotid arteries. Forty-two arteries in seven
asymptomatic, healthy volunteers were studied using five MRA sequences: two
conventional time-of-flight sequences, 2D time-of-flight (2DTOF) and 3D
time-of-flight (3DTOF); 2D and 3D magnetisation-prepared, segmented time-of-
flight sequences (2DTFE and 3DTFE); and a 3D phase contrast angiography
(3DPCA) sequence. A protocol that could be realistically employed in a routine
clinical situation was chosen. 2DTOF had significantly (P 35 percent
(P=0.01). The use of thrombolytic agents and captopril had no significant effect
on the risk of stroke. Conclusions During the five years after myocardial
infarction, patients have a substantial risk of stroke. A decreased ejection fraction
and older age are both independent predictors of an increased risk of stroke.
Anticoagulant therapy appears to have a protective effect against stroke after
myocardial infarction. (C) 1997, Massachusetts Medical Society
Keywords: acute/acute myocardial
infarction/age/anticoagulant/anticoagulants/aspirin/CAPTOPRIL/DILATED
CARDIOMYOPATHY/EMBOLISM/HEART-FAILURE/infarction/MANAGE
MENT/MASS/MORTALITY/MURAL THROMBI/myocardial/myocardial
infarction/predictors/PREVENTION/relative risk/risk/risk factors/risk factors for
stroke/stroke/TERM FOLLOW-UP/therapy/thrombolytic
agents/TWO-DIMENSIONAL ECHOCARDIOGRAPHY
Tu, J.V., Hannan, E.L., Anderson, G.M., Iron, K., Wu, K.Y., Vranizan, K., Popp, A.J.
and Grumbach, K. (1998), The fall and rise of carotid endarterectomy in the
United States and Canada. New England Journal of Medicine, 339 (20),
1441-1447.
Abstract: Background Randomized clinical trials have demonstrated the efficacy of
carotid endarterectomy in the prevention of stroke when the procedure is
performed in regional centers of surgical excellence. However, the relative
effects of these studies on the rates of carotid endarterectomy in the United States
and Canada have been unclear. Methods We calculated the annual rate of carotid
endarterectomy in the U.S. states of California and New York and in the
Canadian province of Ontario from 1983 through 1995. We also studied whether
patients in the early 1990s were selectively referred to hospitals with high
volumes of procedures and historically low in-hospital mortality rates. Results
Rates of carotid endarterectomy fell in all three regions from 1984 to 1989 (from
126 to 66 per 100,000 adults 40 years of age or older in California, from 65 to 40
per 100,000 in New York, and from 40 to 15 per 100,000 in Ontario), after the
publication of studies demonstrating that the rates of complications of carotid
endarterectomy were unacceptably high. However, the clinical trials of the 1990s,
which showed benefit from carotid endarterectomy, were associated with a
dramatic resurgence in the rates of the procedure from 1989 to 1995 (from 66 to
99 per 100,000 in California, from 40 to 96 per 100,000 in New York, and from
15 to 38 per 100,000 in Ontario). These increased rates were not associated with
proportionally greater numbers of referrals of patients to hospitals with low
mortality rates. Conclusions There have been a dramatic fall and a rise in the
rates of carotid endarterectomy in both the United States and Canada, which
correlate with the publication of first unfavorable and then favorable clinical
studies. The absence of selective referral of patients to centers with the lowest
mortality rates raises questions about whether the benefits of carotid
endarterectomy in the general population are similar to those demonstrated in the
clinical trials. (N Engl J Med 1998;339:1441-7.) (C) 1998, Massachusetts
Medical Society
Keywords: adults/age/carotid/carotid endarterectomy/clinical
trials/complications/endarterectomy/mortality/PREVENTION/STROKE/trials
Tonkin, A., Aylward, P., Colquhoun, D., Glasziou, P., Harris, P., MacMahon, S.,
Magnus, P., Newel, D., Nestel, P., Sharpe, N., Hunt, D., Shaw, J., Simes, R.J.,
Thompson, P., Thomson, A., West, M., White, H., Simes, S., Hague, W., Caleo,
S., Hall, J., Martin, A., Mulray, S., Barter, P., Beilin, L., Collins, R., McNeil, J.,
Meier, P., Willimott, H., Smithers, D., Wallace, P., Sullivan, D. and Keech, A.
(1998), Prevention of cardiovascular events and death with pravastatin in patients
with coronary heart disease and a broad range of initial cholesterol levels. New
England Journal of Medicine, 339 (19), 1349-1357.
Abstract: Background In patients with coronary heart disease and a broad range of
cholesterol levels, cholesterol-lowering therapy reduces the risk of coronary
events, but the effects on mortality from coronary heart disease and overall
mortality have remained uncertain. Methods In a double-blind, randomized trial,
we compared the effects of pravastatin (40 mg daily) with those of a placebo
over a mean follow-up period of 6.1 years in 9014 patients who were 31 to 75
years of age. The patients had a history of myocardial infarction or
hospitalization for unstable angina and initial plasma total cholesterol levels of
155 to 271 mg per deciliter. Both groups received advice on following a
cholesterol-lowering diet. The primary study outcome was mortality from
coronary heart disease. Results Death from coronary heart disease occurred in
8.3 percent of the patients in the placebo group and 6.4 percent of those in the
pravastatin group, a relative reduction in risk of 24 percent (95 percent
confidence interval, 12 to 35 percent; P 60
years imparted a slightly greater risk of intraoperative bleeding. Age >60 years.
hypertension, or recent cessation of aspirin may increase the risk of postoperative
bruising. A history of previous stroke increased the risk of postoperative
bleeding. There was no statistical difference in the incidence of hemorrhagic
complications among patients Currently treated with anti platelet/anticoagulant
agents, those who had stopped these medications before surgery, and those who
were not treated with these agents, No patient had permanent sequelae related to
hemorrhage. Two patients had postoperative systemic complications possibly
attributable to withholding anticoagulant/antiplatelet medications in preparation
for surgery. Conclusions: Although serious hemorrhagic complications may be
associated with oculoplastic procedures. the incidence of these complications is
low. The decision to withhold antiplatelet or anticoagulant medications before
surgery should be indiv vidualized. Selected procedures can be safely performed
without stopping these agents
Keywords: age/anticoagulant/antiplatelet/aspirin/ASPIRIN
THERAPY/bleeding/BLEPHAROPLASTY/BLINDNESS/complications/disease
/heart/heart
disease/hemorrhage/history/hypertension/incidence/INGESTION/MANAGEME
NT/medical/outcome/postoperative/PRIMARY PREVENTION/prospective
study/RANDOMIZED TRIALS/RISK/risk
factors/severity/sex/statistical/stroke/surgery/use/VASCULAR-DISEASE/WAR
FARIN
Carter, L.C., Tsimidis, K. and Fabiano, J. (1998), Carotid calcifications on panoramic
radiography identify an asymptomatic male patient at risk for stroke - A case
report. Oral Surgery Oral Medicine Oral Pathology Oral Radiology and
Endodontics, 85 (1), 119-122.
Abstract: Although stroke may be preventable, a major challenge is to find effective
methods of detection of stroke-prone patients. Most noncardiogenic strokes
occur as a result of atherosclerosis involving the proximal internal carotid artery,
calcifications of which can be detected on dental panoramic radiography. This
report describes the case of an asymptomatic patient whose dental radiographic
findings led to carotid endarterectomy. Calcifications were viewed bilaterally in
the soft tissues of the neck in the area of the carotid bifurcation on a screening
panoramic radiograph of an asymptomatic 75-year- old man. Subsequent duplex
Doppler ultrasound revealed extensive atherosclerotic changes bilaterally with
critical stenosis (90%+) in the right internal carotid artery. Carotid digital
subtraction angiography revealed a 95%+ stenosis at the origin of the right
internal carotid artery. The patient underwent right carotid endarterectomy
involving the internal, external, and common carotid arteries. Twelve months
later the patient was alive and well. Dental panoramic radiography represents a
useful imaging modality for detection of some asymptomatic stroke-prone
patients. Identification of calcifications in the area of a patient's carotid
vasculature should prompt expeditious referral to a physician for a
cerebrovascular and cardiovascular work-up as part of an active stroke
prevention strategy
Keywords: asymptomatic/atherosclerosis/carotid/carotid arteries/carotid artery/carotid
endarterectomy/detection/endarterectomy/HEART/prevention/risk/stroke/stroke
prevention
August, M. (2001), Cerebrovascular and carotid artery disease. Oral Surgery Oral
Medicine Oral Pathology Oral Radiology and Endodontics, 92 (3), 253-256
Keywords: carotid/carotid artery/carotid artery disease/disease/STROKE
PREVENTION
Shaper, A.G. (1996), Obesity and cardiovascular disease. Origins and Consequences of
Obesity, 201 90-107.
Abstract: The strong and consistent relationship observed between body weight and
blood pressure develops early in life, and overweight/obesity(1) in adult life is a
good predictor of hypertension. Weight reduction leads to a decrease in blood
pressure and prevention of weight increase lowers the incidence of hypertension,
but obesity is not necessarily the direct cause of raised blood pressure. Obesity is
not established as an independent risk factor for stroke beyond its association
with other risk factors. Obesity is a relatively weak risk factor for coronary heart
disease (CHD) but it is closely associated with almost ail other coronary risk
factors. Thus, becoming obese on a Western high fat diet, with development of
excess central fat, promotes atherogenesis through a wide range of biochemical
and hormonal parameters, including insulin sensitivity. The obesity-CHD
relationship is further confused by the weight loss associated with smoking and
smoking-related disease, and is confounded by risk factors that accompany the
development and maintenance of obesity. Weight loss in middle- aged
populations does not apparently lower CHD incidence, possibly because of lack
of specificity in methods of weight reduction. Irrespective of the mechanisms
involved, early prevention of atherogenic weight gain in young adulthood is an
important public health goal towards the control of hypertension and CHD
Keywords: AGED BRITISH MEN/BLOOD-PRESSURE/BODY-MASS
INDEX/CARE/MORTALITY/OVERWEIGHT/RISK
FACTOR/STROKE/UNITED-STATES/WEIGHT-LOSS/WOMEN
Ramnemark, A., Nyberg, L., Borssen, B., Olsson, T. and Gustafson, Y. (1998), Fractures
after stroke. Osteoporosis International, 8 (1), 92-95.
Abstract: Fractures are a serious complication after stroke. Among patients with femoral
neck fractures, a large subgroup have had a previous stroke. This study aimed to
investigate the incidence of fractures after stroke. Included in the study were
1139 patients consecutively admitted for acute stroke. Fractures occurring from
stroke onset until the end of the study or death were registered retrospectively.
Hip fracture incidence was compared with corresponding rates from the general
population. Patients were followed up for a total of 4132 patient-years (median
2.9 years). There were 154 fractures in 120 patients and median time between the
onset of stroke and the first fracture was 24 months. Women had significantly
more fractures than men chi(2) = 15.6; p 35
cm/s, mean velocity in middle cerebral artery (MCA) > 170 cm/s, resistive index
(RI) in OA 200 cm/s. Conclusion. Positive MRA
with a positive TCD in an asymptomatic patient in long-term follow-up suggests
a trend for developing clinical stroke. A 4- to 8-year follow-up of nine patients
with positive TCD, positive MRI, but not positive MRA did not show
development of clinical stroke. Nine Doppler findings are significant in
screening for clinically symptomatic vascular disease in sickle cell patients. It is
recommended that children with sickle cell disease be screened for
cerebrovascular disease with TCD. If one or two indicators of abnormality are
present, MRA is recommended. If the MRA is positive, the patient may be
considered for transfusion therapy or other treatment for prevention of stroke
Keywords: ANGIOGRAPHY/cerebral/cerebrovascular
disease/development/NEW-YORK/prevention/STROKE/therapy/treatment/ULT
RASONOGRAPHY/validity/vascular/vascular disease
Bulas, D.I., Jones, A., Seibert, J.J., Driscoll, C., O'Donnell, R. and Adams, R.J. (2000),
Transcranial Doppler (TCD) screening for stroke prevention in sickle cell anemia:
pitfalls in technique variation. Pediatric Radiology, 30 (11), 733-738.
Abstract: Background. The Stroke Prevention Trial in Sickle Cell Anemia (STOP)
identified children as being at high stroke risk if the time-averaged maximum
mean velocity (TAMMV) of the middle cerebral or intracranial internal carotid
arteries measured greater than or equal to 200 cm/s. These values were obtained
utilizing a 2-mHz dedicated nonimaging pulsed Doppler technique (TCD) and
manual measurements. Questions have been raised as to the comparability of
results obtained with different ultrasound machines and measurement techniques.
Objective. The purpose of this study was to compare nonimaging (TCD) and
transcranial duplex imaging (TCDI) findings in children potentially at risk for
stroke with sickle cell disease. Materials and methods. Twenty-two children with
sickle cell disease and no history of stroke were evaluated by both TCD and;
TCDI. Examinations were performed on the same day without knowledge of the
other modality results and read independently using manually obtained
measurements. Mean velocities, peak systolic velocities, and end diastolic
velocities obtained by the two techniques were compared. In a subgroup, manual
measurements were compared to electronically obtained measurements. Results.
TCDI values were lower than TCD measurements for all vessels. TCDI
TAMMV values were most similar to the TCD values in the middle cerebral
artery (-9.0 %) and distal internal cerebral artery (-10.8 %), with greater
variability in the anterior cerebral artery (-19.3 %), bifurcation (-16.3 %), and
basilar arteries (-23.1%). Risk group placement based on middle cerebral artery
TAMMV values did not change when comparing the two techniques.
Measurements obtained electronically were lower than those obtained manually.
Conclusion. Velocities obtained by TCDI may be lower than TCD measurements,
and these differences should be taken into consideration when performing
screening for stroke risk and selection for prophylactic transfusion based on the
STOP protocol
Keywords: anemia/ANGIOGRAPHY/arteries/carotid/carotid arteries/cerebral/cerebral
artery/CEREBROVASCULAR-DISEASE/CHILDREN/Doppler/duplex/history/
knowledge/middle cerebral
artery/MRA/NEW-YORK/prevention/RISK/screening/sickle cell anemia/sickle
cell disease/stroke/stroke
prevention/TCD/transcranial/transfusion/ULTRASONOGRAPHY/ultrasound
Jones, A.M., Seibert, J.J., Nichols, F.T., Kinder, D.L., Cox, K., Luden, J., Carl, E.M.,
Brambilla, D., Saccente, S. and Adams, R.J. (2001), Comparison of transcranial
color Doppler imaging (TCDI) and transcranial Doppler (TCD) in children with
sickle-cell anemia. Pediatric Radiology , 31 (7), 461-469.
Abstract: Background. Transcranial Doppler (TCD) has been demonstrated to identify
those at highest risk of stroke among children with sickle-cell disease. Based on
a randomized clinical trial [Stroke Prevention in Sickle-Cell Anemia Trial
(STOP)], which ended in 1997, the National Heart Lung and Blood Division of
NIH has recommended TCD screening and chronic blood transfusion based on
Nicolet TC 2000 dedicated Doppler (TCD). Studies performed using TCD
imaging modalities need to be correlated to that used in the clinical trial to
provide information for treatment decisions when screening with TCDI.
Objective. To correlate transcranial arterial time-averaged mean velocities
obtained from an Acuson Transcranial Doppler Imaging to those obtained using
the TCD as the gold standard for treatment decisions based on STOP. Materials
and Methods. A total of 29 children with sickle-cell disease, age 3-16 years, were
studied at one of two scanning sessions using both techniques and a scanning
protocol based on that used in STOP performed and read independently. The
average difference in the measured velocities for each arterial segment was tested
to determine difference from zero. Differences were compared before and after
modifications to the TCDI technique were made to mimic the STOP protocol
more closely. Results. TCDI velocities were generally lower than TCD velocities
for the same segment, but the difference was reduced (from 15% to 10% for the
middle cerebral artery) by modifications to the TCDI protocol. Conclusions.
Measurements using the Acuson system are modestly lower than those obtained
with dedicated Doppler using the Nicolet TCD
Keywords: age/anemia/arterial/blood transfusion/cerebral/cerebral
artery/children/clinical trial/DISEASE/Doppler/middle cerebral
artery/NEW-YORK/randomized/randomized clinical trial/risk/screening/sickle
cell anemia/sickle cell disease/STROKE/TCD/transcranial/transcranial
Doppler/transfusion/treatment/trial/ULTRASONOGRAPHY
Ferriero, D.M., Sheldon, R.A., Black, S.M. and Chuai, J. (1995), Selective Destruction
of Nitric-Oxide Synthase Neurons with Quisqualate Reduces Damage After
Hypoxia-Ischemia in the Neonatal Rat. Pediatric Research, 38 (6), 912-918.
Abstract: The vulnerability of the developing CNS to hypoxia-ischemia (H- I) differs
from that of the mature brain and is due in part to release of nitric oxide (NO)
from parenchymal neurons. If NO is important in the generation of excitotoxic
injury after H-I in the developing CNS, then selective destruction of the neuronal
nitric oxide synthase (nNOS) cells before H-I should lessen the injury seen after
the insult. Using low dose quisqualic acid (QA) injected into neonatal (postnatal
d 7) parietal cortex, the nNOS neurons were eliminated while sparing other
neuronal and glial populations as ascertained by NADPH diaphorase
histochemistry, nNOS immunocytochemistry, and Nissl counterstain. Animals
subjected to focal ischemia followed by global hypoxia 24 h after the
intracortical injection of QA had more viable cortex remaining than
vehicle-injected animals (83.4 +/- 4.3% versus 62.7 +/- 8.3%) and lower injury
severity represented by less neuronal loss and gliosis. Intracortical injections of
QA without H-I resulted in minimal cell loss at the injection site with elimination
of nNOS neurons throughout the parietal cortex. Microglial and astrocytic
proliferation was seen in areas damaged by H-I 3 wk after injury and clearly
marked infarcted areas. Prevention or elimination of NO production from nNOS
cells can prevent much of the delayed neuronal necrosis seen after H-I in the
developing CNS
Keywords:
BRAIN-DAMAGE/focal/IMMUNOREACTIVITY/INJURY/ischemia/MECHA
NISMS/NADPH-DIAPHORASE/necrosis/neurons/PROTEIN/severity/SPREAD
ING DEPRESSION/STROKE
Abbott, R.D., White, L.R., Ross, G.W., Petrovitch, H., Masaki, K.H., Snowdon, D.A.
and Curb, J.D. (1998), Height as a marker of childhood development and late-life
cognitive function: The Honolulu-Asia Aging Study. Pediatrics, 102 (3),
602-609.
Abstract: Objective. Growing evidence suggests that structural and functional brain
reserves, thought to develop in childhood and adolescence, may be crucial in
determining when cognitive impairment begins. The purpose of this report is to
examine the relationship of height, as a marker of childhood development, to
late-life cognitive function in a sample of elderly Japanese-American men.
Method. Cognitive performance was assessed from 1991 to 1993 in the
Honolulu-Asia Aging Study in 3733 men aged 71 to 93 years and related to
height that was measured 25 years earlier. Results. Among the study sample,
shorter men were older, leaner, and less educated than taller men. Shorter men
also spent more years of their childhood living in Japan and were more likely to
have had fathers in unskilled professions. After adjustment for age, the
prevalence of poor cognitive performance declined consistently with increasing
height from 25% in men shorter than 154 cm (61 in) to 9% in those taller than
174 cm (69 in). Excluding men with stroke or dementia did not alter the
association between height and cognitive performance. Apolipoprotein E4 was
unrelated to height and did not effect the association between height and
cognitive function. The prevalence of Alzheimer's disease was higher in men
who were 154 cm (61 in) or shorter as compared with men who were taller (4.7%
vs 2.9%, respectively). There was no association between height and vascular
dementia. Conclusion. Efforts to improve prenatal and early life conditions to
maximize growth in childhood and adolescence could diminish or delay the
expression of cognitive impairments that occur later in life. prevention of some
late-life cognitive impairments may have pediatric origins
Keywords: ABILITY/ADULT
BRAIN-WEIGHT/AGE/aged/ALZHEIMERS-DISEASE/childhood
development/cognitive
function/DEMENTIA/dementia/development/elderly/HAWAII/HEAD
SIZE/LOW-BIRTH-WEIGHT/MINI-MENTAL
STATE/PREVALENCE/prevention/stroke/vascular
Kimm, S.Y.S., Barton, B.A., Obarzanek, E., McMahon, R.P., Sabry, Z.I., Waclawiw,
M.A., Schreiber, G.B., Morrison, J.A., Similo, S. and Daniels, S.R. (2001),
Racial divergence in adiposity during adolescence: The NHLBI growth and
health study. Pediatrics, 107 (3), U30-U36.
Abstract: Background. Black women are particularly vulnerable to obesity, with a
prevalence rate of >50%. The higher mortality and morbidity from
cardiovascular disease, stroke, and diabetes have been attributed, in part, to their
obesity. In recent years, a particular public health concern is the increasing
secular trend in obesity with an even greater racial disparity, especially in girls
and women. Between the early 1960s and late 1980s, the prevalence of obesity
tripled in young black girls 6 to 11 years of age, while it doubled in white girls.
Similarly, both overweight and obesity in adolescent girls 12 to 17 years of age
also increased, with a greater increase again seen in adolescent black girls. This
secular trend in obesity with a greater increase in black girls signals a potentially
grave future chronic disease burden on black women, which is already higher
than in white women. The increasing occurrence in children and adolescents of
noninsulin-dependent diabetes, traditionally viewed as an adult-onset condition,
may be a consequence of the currently high prevalence of obesity in American
youth. Not surprisingly, this condition is seen more frequently among black
youths. Prepubescent black girls are generally leaner than age-comparable white
girls, but by 20 years of age, black women are considerably heavier than are
white women. Thus, it is assumed that the racial disparity in adiposity evolves
during adolescence. However, the specific age at which this occurs and
underlying factors are yet to be identified because of the current paucity of
longitudinal cohort data. Objectives. In 1985, the National Heart, Lung, and
Blood Institute (NHLBI) initiated a 10-year longitudinal multicenter study (the
NHLBI Growth and Health Study [NGHS]) to investigate the development of
obesity in black and white girls during adolescence and its environmental,
psychosocial, and cardiovascular disease risk factor correlates. The purpose of
this report is to examine the natural history of adiposity and weight accretion
during adolescence in a biracial cohort of girls to investigate the evolution of the
racial divergence in adiposity and to examine the relationships between increases
in adiposity and pubertal maturation, energy intake, and physical activity.
Participants and Setting. A total of 2379 black (51%) and white (49%) girls, 9 to
10 years of age, were recruited from public and parochial schools in Richmond,
California, and Cincinnati, Ohio, and from families enrolled in a large health
maintenance organization in the Washington, DC area. Participant eligibility was
limited to girls and their parents who declared themselves as being either black
or white and who lived in racially concordant households. Design and Statistical
Analysis. The NGHS is a multicenter prospective study of black and white girls
with annual visits from 9 to 10 years of age through 18 to 19 years of age. The
follow-up rate was 89% at the 10th annual visit. Skinfold measurements were
obtained at the triceps, suprailiac, and subscapular sites with Holtain calipers.
Sexual maturation was assessed by trained registered nurses. The onset of
menarche was ascertained annually by questionnaire. All clinical assessments
were conducted using a common protocol by centrally trained staff. Longitudinal
regression (generalized estimating equations) models were used to examine the
relationship between adiposity and race, age, pubertal maturation, daily energy
intake, and physical activity. Main Outcome Measures. The main outcome
measure was the sum of skinfolds (SSF) at the triceps, subscapular, and
suprailiac sites as an index of adiposity for comparison between the 2 racial
groups. Body mass index (BMI; weight in kilograms divided by height in meters,
squared) distributions were examined by age and race. Results. Racial
differences in SSF, unadjusted for maturation, were evident at 10 years of age.
For each chronological age, there was a higher proportion of black girls with
more advanced pubertal maturation than white girls. The 15th percentiles for
SSF were similar and remained thus throughout the study. The median for SSF
for black girls, although similar to the median SSF of white girls at 9 years of age,
became greater for black girls at 12 years of age (36 mm vs 32.5 mm) and at age
19 years the difference was 6 mm (49.5 mm vs 43.5 mm). In contrast, the
difference in the 85th as well as the 95th percentile values for SSF were
substantially higher in black girls at all ages (9 mm and 10 mm, or 18% and 15%,
respectively, at age 9 years) and these racial differences widened with age (20
mm and 26 mm, or 25% and 24%, respectively, by age 19 years). The racial
difference in the median BMI increased from 0.4 to 2.3 kg/m(2) between ages 9
and 19 years. Unlike SSF at the 15th percentile, the BMI for lean 9-year-old
black girls was similar to3% higher than whites. As with SSF, for heavier girls,
BMI at the 85th percentile even at age 9 years was 11% greater in black girls and
became 23% greater by age 19 years. Differences in BMI at the 95th percentile
also increased from 3.6 to 8.1 kg/m(2) between ages 10 and 18 years. After
adjusting for stages of maturation in multivariate longitudinal regression models,
adiposity for black girls became significantly greater at age 12 years compared
with white girls. The largest gain in adiposity for both groups was seen at the
time of pubescence, an approximate increase of 8.0 mm in SSF for white girls
and 10.8 mm for black girls. The next milestone for a gain in adiposity occurred
around menarche with an increase in SSF of 5.0 mm for white girls and 3.4 mm
for black girls. Additionally, there was a significantly greater accrual of adiposity
with earlier achievement of menarche, ie, a gain of 3.7 mm for white girls and
3.0 mm for black girls for each year. Although the effect of puberty on the gain
in adiposity was similar for both races, for each chronological age, there was a
greater accrual of adiposity in black girls because they matured earlier than white
girls. Energy intake was significantly and inversely associated with increasing
adiposity but not with levels of physical activity. Conclusion. The time of the
largest accrual of body fat occurred around the 2 major pubertal milestones, the
onsets of puberty and menarche. Even after adjusting for pubertal maturation,
after age 12 years, black girls were significantly fatter than were white girls.
Earlier menarche conferred an additional risk for greater gain in adiposity for
both racial groups. Primary prevention of obesity, therefore, should commence
with fostering the maintenance of normal growth in young girls before the
initiation of pubertal maturation because increased adiposity is associated with
earlier menarche. Next, and more importantly, pediatricians should be
particularly vigilant with growth monitoring during the critical milestones of
pubertal development, a vulnerable time for a large accrual of adiposity. Greater
emphasis needs to be placed on preventive efforts in black girls to minimize their
risk for developing obesity during adolescence
Keywords: adiposity/adolescence/adolescents/age/body mass index/BODY-MASS
INDEX/cardiovascular/cardiovascular disease/children/chronic
disease/correlates/DEPENDENT
DIABETES-MELLITUS/development/diabetes/disease/disease risk/energy
intake/ENERGY-INTAKE/health/history/monitoring/morbidity/mortality/NATI
ONAL-HEALTH/NUTRITION EXAMINATION
SURVEYS/OBESITY/obesity/outcome/OVERWEIGHT/physical
activity/prevalence/prevention/prospective study/pubertal maturation/public
health/race/racial differences/risk/risk factor/stroke/TRENDS/weight/WHITE
GIRLS/women/YOUNG-ADULTS
Lynch, J.K., Hirtz, D.G., DeVeber, G. and Nelson, K.B. (2002), Report of the National
Institute of Neurological Disorders and Stroke workshop on perinatal and
childhood stroke. Pediatrics, 109 (1), 116-123.
Abstract: The National Institute of Neurological Disorders and Stroke and the Office of
Rare Disorders sponsored a workshop on perinatal and childhood stroke in
Bethesda, Maryland, on September 18 and 19, 2000. This was an international
workshop to bring together experts in the field of perinatal and childhood stroke.
Topics covered included epidemiology, animal models, risk factors, outcome and
prognosis, and areas of future research for perinatal and childhood stroke. Stroke
in infants and children is an important cause of morbidity and mortality and an
emerging area for clinical and translational research. Currently, there is no
consensus on the classification, evaluation, outcome measurement, or treatment
of perinatal and childhood stroke. Pediatric stroke registries are needed to
generate data regarding risk factors, recurrence, and outcome. The impact of
maternal and perinatal factors on risk and outcome of neonatal stroke needs to be
studied. This information is essential to identifying significant areas for future
treatment and prevention
Keywords: animal/ANTIPHOSPHOLIPID ANTIBODIES/ARTERIAL ISCHEMIC
STROKE/ARTERIOVENOUS-
MALFORMATIONS/BRAIN-DAMAGE/cerebrovascular
diseases/CEREBROVASCULAR- DISEASE/child/children/CLINICAL
CHARACTERISTICS/consensus/epidemiology/essential/evaluation/infant/INTR
AARTERIAL THROMBOLYSIS/morbidity/morbidity and
mortality/mortality/NEONATAL CEREBRAL INFARCTION/Neurological
Disorders and Stroke
workshop/outcome/prevention/prognosis/recurrence/research/risk/risk
factors/RISK-FACTORS/SICKLE-CELL DISEASE/stroke/treatment/USA
Deymann, A.J. and Goertz, K.K. (2003), Myocardial infarction and transient ventricular
dysfunction in an adolescent with sickle cell disease. Pediatrics, 111 (2),
art-e183.
Abstract: We report a case of an adolescent who had sickle cell disease and previous
evidence of myocardial damage and presented with abdominal pain and rapid
progression to cardiogenic shock and subsequent development of myocardial
infarction. To our knowledge, this represents only the second report of a case of
acute myocardial ischemia and subsequent infarction resulting transient
ventricular dysfunction reported in a child with sickle cell disease successfully
treated with exchange transfusion. The pathophysiology of this complication
remains unclear, and cardiac complications may remain undetected as lung, bone,
and brain infarcts are more common and the pain associated with sickle cell
crisis may mask the ischemic symptoms. Multiple factors may contribute to
ischemia in addition to the presence of a vaso-occlusive crisis or infection. Acute
or chronic myocardial ischemia are probably more prevalent than currently
known
Keywords: acute/ANEMIA/brain/cardiac/CARDIAC
DYSFUNCTION/child/CHILDHOOD/chronic/complication/complications/deve
lopment/disease/exchange
transfusion/infarction/infection/ischemia/ischemic/knowledge/myocardial/myoca
rdial infarction/pain/pathophysiology/progression/sickle cell disease/STROKE
PREVENTION/symptoms/transfusion/transient/USA
Ernst, E., Szirmai, I. and Bogar, L. (1992), Hemorheological Effects of Pyritinol in
Patients After Ischemic Stroke - A Placebo-Controlled, Double-Blind Trial.
Perfusion, 5 (6), 184-&.
Abstract: Patients who had suffered an ischaemic stroke were randomized to receive
either oral pyritinol or placebo for 4 weeks. Blood and plasma viscosity,
haematocrit and red cell filterability were quantified at baseline as well as 1 and
4 weeks after. No changes were seen in the placebo group. Blood viscosity
decreased significantly in the experimental group. Since this variable can be
viewed as a secondary risk factor for stroke survivors, one should test the
possibility that pyritinol may be useful in the secondary prevention after stroke
Keywords: BLOOD VISCOSITY/HEMATOCRIT/ISCHEMIC STROKE/PYRITINOL
Marshall, M. (1992), Stroke and Sex - Prevalence and Prevention. Perfusion, 5 (11),
338-339
Morl, H. (1993), Stroke Prophylaxis and Prevention of Recurrence - Therapeutic
Strategies and Dosages. Perfusion, 6 (3), 126-128
Michna, S. (1998), FDA approves CSE inhibitor Pravastatin for stroke prevention and
reduction of recurrent events in infarction patients with normal cholesterol levels.
Perfusion, 11 (5), 235
Keywords: cholesterol/infarction/PERFUSION/prevention/stroke/stroke prevention
Yasue, H., Ogawa, H., Tanaka, H., Miyazaki, S., Hattori, R., Saito, M., Ishikawa, K.,
Masuda, Y., Yamaguchi, T., Motomiya, T. and Tamura, Y. (1999), Effects of
aspirin and trapidil on cardiovascular events after acute myocardial infarction.
Perfusion, 12 (8), 342-348.
Abstract: Aspirin therapy confers conclusive net benefits in the acute phase of evolving
myocardial infarction, but no clear evidence of benefit from the long-term use of
aspirin after acute myocardial infarction (AMI) has been shown in any single
study, This multicenter study, the Japanese Antiplatelets Myocardial Infarction
Study, was performed to find out whether aspirin or trapidil would improve
clinical outcome compared with no antiplatelets in postinfarction patients, The
study was a multicenter, open-label, randomized controlled trial of aspirin 81
mg/day, trapidil 300 mg/day, and no antiplatelets in patients with AMI admitted
within 1 month from the onset of symptoms, Seven hundred twenty-three
patients were enrolled at 70 hospitals in 18 prefectures of Japan; 250 were
randomly assigned to treatment with 81 mg aspirin (aspirin-group), 243 to that
with trapidil (trapidil-group), and 230 were not given antiplatelet agents, The
mean follow-up period was 475 days, This study demonstrated that long-term
use of aspirin at the dose of 81 mg/day reduced the incidence of recurrent AMI
compared with the group receiving no antiplatelets after AMI (p = 0.0045) and
that trapidil also reduced the occurrence of reinfarction compared with the group
receiving no antiplatelets, but the difference was not significant (p = 0.0810).
The incidence of cardiovascular events including cardiovascular death,
reinfarction, uncontrolled unstable angina requiring admission to hospital, and
nonfatal ischemic stroke was reduced in the group receiving 300 mg trapidil
daily compared with the group receiving no antiplatelets (p = 0.0039). The use of
aspirin 81 mg/day provided almost no benefit over no antiplatelets therapy in the
incidence of cardiovascular events, In conclusion, low-dose aspirin (81 mg)
effectively prevented recurrent AMI in postinfarction patients after thrombolysis
or coronary angioplasty when used over a long term, Furthermore, the long-term
use of trapidil resulted in a significant reduction in the incidence of
cardiovascular events
Keywords: acetyl salicylic acid/ACID/acute/acute myocardial
infarction/angina/angioplasty/antiplatelet agents/ANTIPLATELET
THERAPY/antiplatelets/aspirin/cardiovascular/cardiovascular events/coronary
angioplasty/GROWTH-FACTOR
ANTAGONIST/HEART-DISEASE/hospital/incidence/infarction/ischemic/ische
mic stroke/MORTALITY/myocardial/myocardial
infarction/PERFUSION/randomized/randomized controlled
trial/RESTENOSIS/SECONDARY
PREVENTION/stroke/therapy/thrombolysis/TRANSLUMINAL CORONARY
ANGIOPLASTY/trapidil/treatment/TRIAL/TRIAZOLOPYRIMIDINE/unstable
angina
Xiao, W., Wang, L., Scott, T., Counsell, R.E. and Liu, H. (1999), Radiolabeled
cholesteryl iopanoate/acetylated low density lipoprotein as a potential probe for
visualization of early atherosclerotic lesions in rabbits. Pharmaceutical Research,
16 (3), 420-426.
Abstract: Purpose. Atherosclerosis is the underlying factor leading to such
cardiovascular diseases (CVD) as stroke, aneurysm, and myocardial infarction.
The early detection of atherosclerotic plaques is considered to be crucial for
successful prevention and/or therapeutic and dietary intervention of CVD.
Current diagnostic practice, on the other hand, can only detect the problem at an
advanced stage. The purpose of this study was to examine the potential of using a
radiolabeled cholesterol ester analog/acetylated low density lipoprotein (AcLDL)
conjugate as a diagnostic agent for the early and non-invasive detection of
atherosclerosis and for the monitoring of the effects of drug therapy. Methods.
Cholesteryl iopanoate (CI), a cholesterylester analog, was synthesized,
radiolabeled, and incorporated into AcLDL. Early atherosclerotic lesions were
induced in New Zealand White rabbits. I-125-Cl/ AcLDL was injected
intravenously at 2 mu Ci/kg. Blood samples were taken at different time intervals
after injection and clearance of the injected drug from blood was studied. The
rabbits were sacrificed after 72 hours and the distribution of radioactivity in
various organs was investigated. Aortae of both atherosclerotic lesion and control
rabbits were removed for Sudan IV staining and autoradiography in order to
confirm the formation of the atherosclerotic lesion and localization of
radioactivity. Results. The injected drug was found to be cleared from blood
following a two compartment model. Radioactivity in the atherosclerotic aorta
was found to be about 8 times higher than that in normal aorta, suggesting that
the proposed diagnostic probe was selectively taken up by the atherosclerotic
lesion. The autoradiography and staining confirmed that the localization of the
proposed probe was superimposed with the atherosclerotic lesion site.
Conclusions, The results suggested that incorporation of CI into AcLDL resulted
in the selective localization of CI at the atherosclerotic plaque areas. Cl/AcLDL
labeled with appropriate radioisotope has the potential to be used as a probe for
visualization of early atherosclerotic lesion using scintigraphy technology
Keywords:
AcLDL/aneurysm/atherosclerosis/autoradiography/BINDING/BIODISTRIBUTI
ON/cardiovascular/cardiovascular diseases/CELLS/cholesterol/cholesteryl
iopanoate/control/DEGRADATION/DEPOSITION/detection/diagnostic
agent/DISEASE/diseases/drug therapy/FAMILIAL
HYPERCHOLESTEROLEMIA/formation/IMAGING AGENTS/infarction/low
density
lipoprotein/MACROPHAGE/METABOLISM/monitoring/myocardial/myocardia
l infarction/NEW-YORK/plaque/prevention/stroke/therapy/visualization
Scott, G. and Scott, H.M. (1997), Application of the findings of the European Stroke
Prevention Study 2 (ESPS-2) to a New Zealand ischaemic stroke cost analysis.
Pharmacoeconomics, 12 (6), 667-674.
Abstract: The aim of this study was to apply the findings of the European Stroke
Prevention Study 2 (ESPS-2) to a paper that quantified and described the annual
cost of ischaemic stroke in New Zealand, and to compare the cost of alternative
drug regimens in the secondary prevention of ischaemic stroke. Comparisons
were made between the costs of low-dosage aspirin (acetylsalicylic acid)
monotherapy and a combination of modified-release dipyridamole and
low-dosage aspirin. Differences in undiscounted costs were calculated over a
2-year period. The New Zealand cost per stroke event was multiplied by the
ESPS-2 incremental reduction in stroke events to derive the cost of strokes
avoided. As the focus of the paper was on direct medical costs, the primary
perspective adopted was that of a healthcare provider or funder, but a societal
perspective was also considered by evaluation of direct nonmedical and indirect
costs. Compared with aspirin monotherapy, combination therapy generated
incremental net direct costs of 18.22 New Zealand dollars ($NZ) per patient or
$NZ18 223 per 1000 patients. However, individually, each treatment regimen
resulted in direct cost savings when compared with placebo: combination therapy
$NZ905.16 per patient; aspirin monotherapy $NZ923.39 per patient (a difference
between the 2 regimens of $NZ18.22 per patient). Total direct and indirect
incremental cost savings were $NZ40.96 per patient, and $NZ40 963 per 1000
patients, for the combination therapy. The analysis demonstrates that changing
patients from low-dosage aspirin to a combination therapy of modified-release
dipyridamole plus low-dosage aspirin would result in a small rise in incremental
direct costs (using our conservative assumptions relating to hospital and
continuing institutional care costs). If less conservative unit cost assumptions
were adopted, a more likely outcome would be a saving in direct incremental
costs of up to $NZ400 per patient treated
Keywords: acetylsalicylic
acid/ASPIRIN/cost/costs/dipyridamole/evaluation/hospital/institutional/ISCHEM
IC STROKE/NEW-ZEALAND/prevention/secondary
prevention/stroke/therapy/treatment
Milne, R.J., VanderHoorn, S. and Jackson, R.T. (1997), A predictive model of the health
benefits and cost effectiveness of celiprolol and atenolol in primary prevention of
cardiovascular disease in hypertensive patients. Pharmacoeconomics, 12 (3),
384-408.
Abstract: This study compares the antihypertensive and lipid modifying effects of
treatment of mild to moderate hypertension with celiprolol or atenolol. It also
models the 5-year cardiovascular risk reduction and the cost effectiveness of
monotherapy from a partial societal perspective. The effects of celiprolol and
atenolol on systolic blood pressure (SBP), total serum cholesterol (TC) and high
density lipoprotein cholesterol (HDL-C) were obtained from a pooled analysis of
published studies. Although celiprolol and atenolol had similar effects on SBP,
celiprolol reduced the ratio of TC to HDL-C by 10.2% [95% confidence intervals
(95% CI) -16.4%, -4.0%] but atenolol increased the ratio by 7.7% (95% CI of
3.4%, 12.0%). The 5-year absolute risks of an initial coronary or cerebrovascular
event or cardiovascular death were computed for cohorts of patients treated with
either agent or remaining untreated, using an accelerated failure time (AFT)
model, based on Framingham Heart Study data. Inputs to the model were age,
gender, smoking: status, SEP, TC and HDL-C. The change in absolute risk was
estimated using the changes in SEP and TC :HDL-C obtained from the pooled
analysis. Average life-months gained by therapy were computed as differences
between the Kaplan-Meier survival curves estimated from the model plus
differences in 5-year cardiovascular death rates multiplied by average life
expectancy obtained from life tables. Direct medical costs included drug
treatment. and the costs of acute care for initial coronary and cerebrovascular
events deferred by therapy over the 5-year treatment period, The model shows
that in the lowest-risk base case (60-year-old men who are nondiabetic and
nonsmokers with SEP of 160mm Hg and a 5-year absolute cardiovascular risk of
12%), celiprolol (271 mg/day) is 2-fold more effective than atenolol (77.4
mg/day) in reducing coronary event risk, and equally effective in reducing
cerebrovascular event risk. The number of individuals that would have to be
treated for 5 years to avoid 1 coronary event is about 30 for celiprolol versus 70
for atenolol. Therapy with celiprolol yields more life-months and at current
prices, the cost per life-year gained by therapy is significantly lower. Both drugs
are cost effective by international standards in the treatment of patients with
5-year absolute cardiovascular risk greater than 10%, and are more cost effective
in those patients at higher levels of absolute cardiovascular risk. The direct
medical costs of treatment for 5 years with celiprolol are the same or slightly less
than treatment with atenolol at the dosages used in the clinical trials, despite a
19% higher tablet price. Both drugs are more cost effective in patients at higher
levels of absolute cardiovascular risk. These findings are sensitive to the drug
dosages, tablet prices and the discount rate. Based on epidemiological and
clinical data, replacing atenolol with celiprolol in patients with mild to moderate
hypertension, but without overt cardiovascular disease, is predicted to have
similar effects on stroke risk, but to be substantially more effective in reducing
the risk of coronary events at no additional direct medical cost over a 5- year
treatment period
Keywords: absolute risk/age/blood pressure/BLOOD- PRESSURE/cardiovascular
disease/cerebrovascular/cholesterol/CHOLESTEROL LEVELS/clinical
trials/CORONARY HEART-DISEASE/cost/cost
effectiveness/cost-effectiveness/costs/drugs/health/high density
lipoprotein/hypertension/ISCHEMIC STROKE/life
expectancy/MYOCARDIAL-INFARCTION/NEW-ZEALAND/prevention/prim
ary prevention/risk/RISK-FACTORS/serum/SERUM-LIPIDS/smoking/societal
perspective/stroke/SYSTEMIC HYPERTENSION/therapy/TO-MODERATE
HYPERTENSION/treatment/trials
Szucs, T.D. (1998), Resource utilisation in the management of dyslipidaemia.
Pharmacoeconomics, 14 11-18.
Abstract: In Western countries, cardiovascular disease accounts for substantial morbidity
and mortality. In the US, where medical costs and intervention rates are the
highest in the world, the direct and indirect costs of cardiovascular disease and
stroke have been estimated at $US274 billion (1998 dollars), with the costs of
hospitalisation ($US 119.9 billion) and lost productivity because of early
mortality ($US77.9 billion) representing the largest proportions of this amount.
Dyslipidaemia is an important risk factor for coronary heart disease (CHD), a
condition which accounts for $US39.3 billion and $US37.9 billion (1998 dollars)
in hospitalisation/nursing home costs and lost productivity, respectively,
annually in the US. Similarly, the UK National Health Service spends more than
500 million pounds sterling annually on the treatment of CHD. Numerous studies
have shown the benefit of lowering cholesterol levels in terms of decreasing
CHD-associated morbidity and mortality; however, drug therapy costs for
dyslipidaemia can be high. US and European treatment guidelines for
dyslipidaemia recommend aggressive treatment for those at highest CHD event
risk. Because of the high prevalence of dyslipidaemia in Western countries, these
recommendations impact on a substantial proportion of the population and have
increased the use of cholesterol-lowering medications. In a limited number of
economic studies using clinical data from large prevention trials, the cost of drug
therapy was nearly offset by the reduction in costs associated with
hospitalisations and revascularisation procedures. Therefore, it appears that the
strategy of identifying and treating individuals at highest risk for CHD, although
expensive in terms of drug costs, would be expected to reduce the substantial
direct and indirect costs associated with this condition
Keywords: ARTERY DISEASE/AUCKLAND/cardiovascular/cardiovascular
disease/cholesterol/cholesterol-lowering/coronary heart disease/CORONARY
HEART-DISEASE/cost/COST-EFFECTIVENESS/costs/drug
therapy/dyslipidaemia/guidelines/heart/HYPERCHOLESTEROLEMIA/INTER
VENTION/LIPOPROTEIN CHOLESTEROL/MIDDLE-AGED
MEN/morbidity/mortality/NEW-ZEALAND/population/prevalence/PREVENTI
ON/risk/risk factor/RISK-FACTORS/SERUM-CHOLESTEROL
CONCENTRATION/stroke/therapy/treatment/treatment guidelines/trials
Chambers, M., Hutton, J. and Gladman, J. (1999), Cost-effectiveness analysis of
antiplatelet therapy in the prevention of recurrent stroke in the UK - Aspirin,
dipyridamole and aspirin-dipyridamole. Pharmacoeconomics, 16 (5), 577-593.
Abstract: Objectives: To evaluate the cost effectiveness from a UK health and social
services perspective of antiplatelet therapies tested in the Second European
Stroke Prevention Study (ESPS-2) in preventing recurrent stroke. To
demonstrate the value of modelling studies in this area. Design and setting: A
decision- analytic model was developed to evaluate health outcomes and
associated costs. Sources of data for efficacy, adverse events, background event
risks, disability and mortality were ESPS-2, the Oxfordshire Community Stroke
Project and UR national statistics. Published national unit costs were applied to
clinician panel estimates of resource use for acute stroke, rehabilitation and long
term care. Outcome measures were strokes or disabled life-years averted, and
disability-free, stroke-free or quality-adjusted life-years gained. Patients and
interventions: 30-day survivors of ischaemic stroke treated with low dose aspirin,
modified-release dipyridamole; the coformulation of low dose aspirin plus
modified-release dipyridamole, or no antiplatelet therapy. Main outcome
measures and results: The model predicted that over 5 years the coformulation
prevented 29 more strokes than aspirin alone per 1000 patients, at an additional
cost of pound 1900 per stroke averted (1996 values). Over 5 years, each
antiplatelet therapy was cost saving compared with no therapy. Results were
sensitive to the cost of acute care, the cost of long term care of disabled stroke
survivors, the effectiveness of therapy and the background risk of recurrent
stroke. In sensitivity analyses, the cost effectiveness did not exceed pound 7000
per stroke averted or pound 11 000 per quality-adjusted life-year (QALY) gained,
except when varying the effectiveness parameter. Conclusions: Application of a
decision-analytic model to the results of ESPS-2 indicated that first-line therapy
with the coformulation of modified-release dipyridamole and low dose aspirin to
patients with a previous ischaemic stroke is likely to generate significant health
benefits at modest extra costs to health and social services. The extra costs of
treatment are balanced by the savings in future costs of acute care and long term
care of the disabled. Future economic evaluations in this area should pay
particular attention to the cost perspective, the duration of analysis, the selection
of trials from which effectiveness data are derived, and the impact of the pooling
of outcome events with potentially different economic consequences
Keywords: acute/adverse events/antiplatelet therapy/aspirin/COMMUNITY/cost/cost
effectiveness/cost-effectiveness/costs/dipyridamole/England/FIRST-EVER
STROKE/health/HIGH-RISK PATIENTS/ischaemic
stroke/MINNESOTA/mortality/NEW-ZEALAND/PERSPECTIVE/prevention/q
uality-adjusted life-years/recurrent
stroke/REHABILITATION/risk/ROCHESTER/SERVICES/stroke/SURVIVAL/t
herapy/TICLOPIDINE/treatment/trials
Marissal, J.P., Selke, B. and Lebrun, T. (2000), Economic assessment of the secondary
prevention of ischaemic events with lysine acetylsalicylate. Pharmacoeconomics,
18 (2), 185-200.
Abstract: Objective: to analyse the economic benefits, in comparison with placebo, of
the secondary prevention of ischaemic stroke and myocardial infarction (MI)
with lysine acetylsalicylate (Kardegic(R)) in patients with a history of ischaemic
stroke, MI or stable and unstable angina pectoris. Design and setting: This was a
modelling study from the perspectives of direct medical costs, the social security
system and society in France. Methods: Efficacy data for the secondary
prevention of ischaemic events were derived from the Antiplatelet Trialists'
Collaboration meta-analysis on antithrombotics. The rates and costs of ischaemic
disease and of serious gastrointestinal adverse affects arising from long term
aspirin treatment, as well as the costs of treatment with lysine acetylsalicylate,
were taken from published sources, using French data where possible. Results:
From the social security perspective, the estimated cost-effectiveness ratios show
that the prevention of MI in patients with a history of unstable angina (with a
1-year follow-up) is a cost-saving strategy, with net benefits ranging from
$US5703 (1996 prices) per avoided MI for lysine acetylsalicylate 300 mg/day to
$US5761 per avoided MI for lysine acetylsalicylate 75 mg/day. The prevention
of MI and stroke is also a cost-saving strategy in patients with prior MI [net
benefits in a 2-year follow-up (5% discount rate) ranging from $US15 to $US494
per avoided MI and from $US37 to $US1170 per avoided stroke]. This was also
true in patients with prior ischaemic stroke (net benefits in a 3-year follow-up
ranging from $US610 to $US2082 per avoided MI and from $US176 to $US599
per avoided stroke). Finally, a 4-year follow-up in patients with a history of
stable angina pectoris shows that prophylactic treatment with lysine
acetylsalicylate is associated with net costs per avoided MI, ranging from
$US4375 to $US3608 per avoided event. Sensitivity analysis confirmed that
prophylaxis with lysine acetylsalicylate in patients at high risk of cardiovascular
and cerebrovascular events results in savings in social security expenditure.
Conclusions: Our results underline the high economic benefit of using lysine
acetylsalicylate to prevent secondary ischaemic stroke and MI in patients at high
risk of cardiovascular and/or cerebrovascular events, leading to savings for the
social security system and society
Keywords: ALZHEIMERS-DISEASE/angina/angina
pectoris/antithrombotics/aspirin/aspirin
treatment/AUCKLAND/cardiovascular/CARE/CEREBRAL-
ISCHEMIA/cerebrovascular/CONTROLLED TRIAL/CORONARY-ARTERY
DISEASE/cost
effectiveness/COST-EFFECTIVENESS/costs/HEART-DISEASE/high
risk/history/infarction/ischaemic stroke/LOW-DOSE ASPIRIN/lysine
acetylsalicylate/meta-analysis/myocardial/myocardial
infarction/MYOCARDIAL-
INFARCTION/NEW-ZEALAND/prevention/prophylaxis/risk/secondary
prevention/STROKE/treatment/unstable angina/unstable angina pectoris
Darba, J., Izquierdo, I., Pontes, C., Navas, C. and Rovira, J. (2002), Economic
evaluation of triflusal and aspirin in the treatment of acute myocardial infarction.
Pharmacoeconomics, 20 (3), 195-201.
Abstract: Objective: To compare the costs to the Spanish healthcare system of 35 days'
treatment with triflusal (600 mg/day) and aspirin (300 mg/day) in patients with
confirmed acute myocardial infarction within 24 hours of onset of symptoms.
Design: A cost minimisation analysis based on the results of the Triflusal in
Acute Myocardial Infarction study (TIM) was conducted. The hypothesis was
that despite a higher acquisition cost of triflusal, savings would result because of
differences in efficacy and safety outcome (non-fatal cerebrovascular event and
haemorrhagic events). Diagnostic Related Groups were used as a proxy for
determining hospital costs in Spain and the values were obtained from different
sources and refer to year 2000 costs. Only direct medical costs were considered
for the economic analysis. Results: Although the acquisition cost of triflusal was
more expensive than that of aspirin, the cost of prevented events - non-fatal
ischaemic cerebrovascular events and cerebral haemorrhages - entirely
compensated for the cost of triflusal. The overall cost of treating patients with
triflusal, compared with aspirin, represented a net saving of 28.4% per patient
treated. Conclusion: Our study showed that triflusal is cost saving compared with
aspirin in the treatment of the acute phase of myocardial infarction
Keywords: acute/acute myocardial
infarction/aspirin/AUCKLAND/cerebral/cerebrovascular/cerebrovascular
event/CLINICAL-TRIALS/cost/costs/DOUBLE-BLIND/evaluation/hospital/infa
rction/ischaemic/medical/myocardial/myocardial
infarction/NEW-ZEALAND/outcome/PLACEBO/PREVENTION/safety/Spain/
STROKE/symptoms/THERAPY/TICLOPIDINE/treatment/triflusal
Buller, N., Gillen, D., Casciano, R., Doyle, J. and Wilson, K. (2003), A
pharmacoeconomic evaluation of the Myocardial Ischaemia Reduction with
Aggressive Cholesterol Lowering (MIRACL) study in the United Kingdom.
Pharmacoeconomics, 21 25-32.
Abstract: Objective: To determine the short-term healthcare costs associated with
intensive lipid lowering with atorvastatin initiated within 24-96 hours of the
occurrence of acute coronary syndrome (ACS) in patients in the UK. Methods:
Patient-level clinical outcome data from the Myocardial Ischaemia Reduction
with Aggressive Cholesterol Lowering (MIRACL) trial and standard cost data
were used to compare the total expected 16-week cost per patient on atorvastatin
80 mg/day versus placebo. Clinical outcomes assessed included the following:
death: cardiac arrest with resuscitation; nonfatal myocardial infarction:
worsening angina pectoris with objective evidence of myocardial ischaemia
requiring rehospitalisation; surgical or percutaneous coronary revascularisation;
nonfatal stroke; hospitalisation for angina without objective evidence of
myocardial ischaemia; and new or worsening congestive heart failure requiring
rehospitalisation. All relevant direct medical costs from the perspective of the
NHS were considered. Results: The total expected cost was 784.05 pounds per
patient in the placebo cohort and 851.59 pounds per patient in the atorvastatin
cohort, resulting in an incremental cost of 67.54 pounds per patient in the
atorvastatin group. The cost per event avoided was 1762.04 pounds. A third of
the cost of atorvastatin treatment was offset within 16 weeks by the cost savings
resulting from the reduction in the number of events in the atorvastatin cohort
compared with the placebo cohort. Conclusion: The clinical benefits of
short-term intensive atorvastatin treatment administered after ACS is attainable
through a marginal increase in 'upfront' costs
Keywords: acute/acute coronary syndrome/angina/angina
pectoris/ATORVASTATIN/AUCKLAND/benefits/cardiac/congestive heart
failure/CORONARY
HEART-DISEASE/cost/COST-EFFECTIVENESS/costs/death/England/evaluati
on/EVENTS/heart/heart failure/infarction/INHIBITORS/ischaemia/lipid
lowering/lipid-lowering/medical/myocardial/myocardial
infarction/NEW-ZEALAND/outcome/outcomes/POPULATION/SECONDARY
PREVENTION/SIMVASTATIN/STATINS/stroke/treatment/trial/United
Kingdom
Simons, W.R. (2003), Comparative cost effectiveness of angiotensin II receptor blockers
in a US managed care setting - Olmesartan medoxomil compared with losartan,
valsartan, and irbesartan. Pharmacoeconomics, 21 (1), 61-74.
Abstract: Objective: To compare the cost effectiveness of the angiotensin II receptor
blockers (ARBs) olmesartan medoxomil, losartan, valsartan and irbesartan for
the treatment of hypertension, from the perspective of a US managed care setting.
Methods: The evaluation was based on a recently completed, prospective,
randomised, double-blind clinical trial comparing the antihypertensive efficacy
of these agents. Differences in diastolic blood pressure reductions among the
comparative agents were used to estimate reductions in the annualised risk of
cardiovascular (CV) and cerebrovascular events using the Framingham model.
These annualised risks were translated into reductions in healthcare expenditures
associated with treating CV events covered by managed care in the US. Data
sources included: the recently published clinical trial of ARB antihypertensive
efficacy, the Framingham Heart Study and a managed care database. Actual
reimbursed amounts were used. Results: Based on antihypertensive efficacy data
versus irbesartan, the use of olmesartan medoxomil is expected to reduce the
number of new cases of CV disease, resulting in a first-year reduction in cost in a
cohort of 100 000 patients of $US906 000. Similarly, a reduction in new cases of
coronary heart disease (CHD) resulted in a cost reduction of $US701 000; a cost
reduction of $US 196 000 for fewer myocardial infarctions (MI); and a cost
reduction of $US28 000 for fewer strokes. Over 5 years, these estimates increase
to $US5 410 000 for fewer cases of CV disease; $US3 975 000 for fewer cases
of CHD; $US 1430 000 for fewer MI; and $US497 000 for fewer strokes.
Compared with valsartan, the use of olmesartan medoxomil is estimated to
reduce by $US3 397 000 the expected cost of treating a cohort of 100 000
patients in the first year for fewer cases of CV disease; by $US2 426 000 for
fewer cases of CHD; by $US565 000 for fewer MI; and by $US 124 000 for
fewer strokes. Over 5 years, these estimates increase to $US 16 231000 for CV
disease; $US 11955 000 for CHD; $US4 505 000 for MI; and $1741000 for
stroke. Compared with losartan, the estimated reduction in first-year cost is $US2
969 000 for CV disease for the cohort of 100 000 patients; $US2 163 000 for
CHD; $US732 000 for MI; and $US 124 000 for stroke. Over 5 years, these
estimates increase to $US 15 149 000 for CV disease; $US 11 107 000 for CHD;
$US4 057 000 for MI; and $1437 000 for stroke. Conclusion: Based on
comparative antihypertensive efficacy data, treatment of hypertensive patients
with olmesartan medoxomil instead of the other leading ARBs has the potential
to reduce overall cost of medical care in a US managed care setting
Keywords: angiotensin/angiotensin II/AUCKLAND/blood
pressure/BLOOD-PRESSURE/cardiovascular/cerebrovascular/CHD/clinical
trial/coronary heart disease/cost/cost effectiveness/cost-effectiveness/diastolic
blood pressure/DISEASE/evaluation/heart/heart
disease/hypertension/irbesartan/losartan/medical/myocardial/NEW-ZEALAND/
PREVENTION/REDUCTIONS/risk/risks/stroke/treatment/trial/US/USA/use/val
sartan
Maitland-van der Zee, A., Stricker, B.H.C., Klungel, O.H., Kastelein, J.J.P., Hofman, A.,
Witteman, J.C.M., Breteler, M.M.B., Leufkens, H.G.M., van Duijn, C.M. and de
Boer, A. (2002), The effectiveness of hydroxy-methylglutaryl coenzyme A
reductase inhibitors (statins) in the elderly is not influenced by apolipoprotein E
genotype. Pharmacogenetics, 12 (8), 647-653.
Abstract: We aimed to assess whether the effectiveness of statins in the prevention of
myocardial infarction, stroke and total mortality is influenced by apolipoprotein
E (apoE) genotype in an elderly population. We used data from the Rotterdam
Study, a prospective population-based cohort study in the Netherlands which
started in 1990 and included 7983 subjects aged 55 years and older. Subjects
who were treated with cholesterol lowering drugs at baseline or with a serum
total cholesterol greater than or equal to 6.5 mmol/l at baseline were included.
We compared the incidence of myocardial infarction, stroke and total mortality
in subjects who received greater than or equal to 2 years of statin treatment with
that in subjects who had been treated for less than 2 years, and in untreated
subjects, using a Cox proportional hazard model with cumulative statin use
defined as time-dependent covariates. The adjusted relative risk of all-cause
mortality was 0.79 [95% confidence interval (CI) 0.51-1.22] and of myocardial
infarction and stroke 0.50 (95% CI 0.28-0.91) for subjects treated with statins for
greater than or equal to 2 years compared to untreated subjects. The adjusted
relative risks for subjects with the epsilon4 allele were 0.91 (95% CI 0.45-1.84)
for allcause mortality and 0.63 (95% CI 0.23-1.78) for myocardial infarction and
stroke. In subjects without the epsilon4 allele, adjusted relative risks were 0.71
(95% CI 0.41-1.24) for all-cause mortality and 0.46 (95% CI 0.22-0.95) for
myocardial infarction and stroke. We found a protective effect of statins on the
risk of myocardial infarction and stroke that was independent of apoE genotype.
The protective effect of statins on total mortality was not statistically significant,
but did not seem to differ between subjects with different apoE genotypes
Keywords: aged/all-cause mortality/apolipoprotein/apolipoprotein E/apolipoprotein E
genotype/CHOLESTEROL/cholesterol-lowering/cohort study/CORONARY
ATHEROSCLEROSIS/drugs/E PHENOTYPE/E
POLYMORPHISM/effectiveness/elderly/HETEROZYGOUS FAMILIAL
HYPERCHOLESTEROLEMIA/hydroxymethylglutaryl coenzyme
A/incidence/infarction/LIPOPROTEIN RESPONSE/LOVASTATIN
TREATMENT/mortality/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/Netherlands/pharmacogenetics/popul
ation/population-based/prevention/relative
risk/risk/risks/serum/SIMVASTATIN/statin/statins/stroke/the
Netherlands/THERAPY/treatment/USA/use
Drago, F., La Manna, C., Emmi, I. and Marino, A. (1998), Effects of sulfinpyrazone on
retinae damage induced by experimental diabetes mellitus in rabbits.
Pharmacological Research, 38 (2), 97-100.
Abstract: The protective activity of the phenylbutazone derivative, sulfinpyrazone on
retinal lesions has been assessed in rabbits with severe streptozotocin-induced
diabetes. Sulfinpyrazone (8 mg kg(-1) per day per os) was administered in
diabetic animals in two different experimental procedures: for 135 days in a
preventive approach (beginning on the day of initial hyperglicaemia); and for 30
days in a therapeutic approach (beginning on the day of appearance of severe
retinal damage). The drug treatment made either with the preventive or the
therapeutic approach reduced the incidence of serious retinal lesions and
increased that of light lesions as assessed by a biomicroscopic method.
Biochemical analyses showed that experimental diabetes was accompanied by
sustained decrease in glucose and pyruvate and an increase of the lactate content
in the retina. A decrease of alpha-ketoglutarate and citrate and an increase of
succinate were also observed along with a decrease of ATP, ADP and an
increase in AMP. Either the preventive or the therapeutic approach was followed
by an increased pyruvate and ATP content and decreased lactate and AMP
content in the retinal tissue. It is possible that this drug acts on the retinal tissue
by inhibiting platelet aggregation and protecting vasal endothelium with the
consequent suppression of the release of vasoactive substances that facilitate
platelet adhesion. (C) 1998 The Italian Pharmacological Society
Keywords: ADP/aggregation/diabetes/diabetes
mellitus/endothelium/ENGLAND/glucose/incidence/ISCHEMIC
STROKE/metabolism/platelet
aggregation/PREVENTION/retina/sulfinpyrazone/THERAPY/treatment
Gurbel, P.A., O'Connor, C.M., Cummings, C.C. and Serebruany, V.L. (1999),
Clopidogrel: The future choice for preventing platelet activation during coronary
stenting? Pharmacological Research, 40 (2), 107-111.
Abstract: Ticlopidine has become an established therapy in patients with stroke, and
during stenting in patients with coronary artery disease. Clopidogrel, another
thienopyridine, is a safe and promising alternative, that irreversibly inhibits
ADP-induced platelet aggregation, and reduces formation of both arterial and
venous thrombi. In a recent, large, well-controlled trial (CAPRIE), clopidogrel
has been shown to be superior to aspirin in terms of prevention of ischaemic
stroke, myocardial infarction and death in patients with atherosclerotic vascular
disease. Clopidogrel provides a safe opportunity to enhance reperfusion when
administered during stent placement, by protecting platelets from excessive
activation. However, the ability of clopidogrel to be superior to ticlopidine in
terms of its antiplatelet properties in the clinical setting of coronary stenting, is
unknown. The effects of clopidogrel versus ticlopidine on platelet and
endothelial function are yet to be determined and may strongly affect the
outcome, benefits, and complications following coronary stent placement.
Further clinical trials, well-designed, and carefully conducted, should elucidate
possible benefits of clopidogrel during coronary interventions, especially in
conjunction with new and aggressive reperfusion techniques. The benefits of
clopidogrel in an expanding array of clinical conditions, including myocardial
infarction, may be directly related to platelet inhibition. Moreover, marginal
clinical benefits, and recently reported severe bleeding events in some patients
after oral platelet glycoprotein IIb/IIIa therapy, may advance clopidogrel as a
safe, and efficient alternative during coronary interventions. This review
summarises the latest, and often confusing data on the effects of thienopyridines
on certain haemostatic characteristics in interventional cardiology. (C) 1999
Academic Press
Keywords: activation/acute coronary syndromes/ACUTE
MYOCARDIAL-INFARCTION/AGGREGATION/antiplatelet/ANTIPLATELE
T THERAPY/ASPIRIN/C7E3 FAB/clinical
trials/clopidogrel/complications/coronary artery
disease/ENGLAND/formation/human/infarction/ischaemic stroke/ISCHEMIC
STROKE/MOLECULAR-WEIGHT HEPARIN/myocardial/myocardial
infarction/platelet activation/platelet
aggregation/platelets/prevention/RECEPTOR
EXPRESSION/reperfusion/review/stenting/stents/stroke/therapy/thienopyridines
/THROMBIN
GENERATION/TICLOPIDINE/ticlopidine/trials/vascular/vascular disease
Horner, R.D. (1998), The high cost of stroke to society, the family, and the patient.
Pharmacotherapy, 18 (3), 87S-93S.
Abstract: Stroke is the third leading cause of mortality in the United States, after heart
disease and cancer, and is a major cause of adult disability. Stroke-related
neurologic deficits affect language, cognition, and motor function. They are often
persistent, exerting a negative effect on the patient's quality of life. Besides
affecting the patient, stroke also places a heavy emotional burden on the
caregivers of patients with stroke. In the United States, the medical and
nonmedical costs of caring for patients with stroke during the first year after their
stroke are $30 billion/year, or approximately $50,000/patient. Many strokes are
preventable, however, through judicious medical or surgical therapies. In
addition, emerging thrombolytic and neuroprotective drugs, administered early
after stroke onset, may minimize or eliminate some of the residual deficits
associated with stroke. A massive educational effort is needed to raise public and
professional awareness about stroke and emerging stroke therapies
Keywords:
BURDEN/costs/DATA-BANK/drugs/ENGLAND/heart/IMPACT/ISCHEMIC
STROKE/MORTALITY/PREVENTION/stroke/THERAPY/TRENDS/TRIALS/
UNIT
Wittkowsky, A.K. (1998), The stroke pharmacopeia: Current medical therapies.
Pharmacotherapy, 18 (3), 94S-100S.
Abstract: Drug therapies that inhibit or reverse thrombus formation are important
components of the management of acute ischemic stroke. The role of antiplatelet
and anticoagulant therapies in stroke prevention has been defined, but further
research is needed to confirm the possible benefits of aspirin, heparin, and
low-molecular-weight heparin products in acute ischemic stroke. Recently,
double-blind, placebo-controlled studies have evaluated the role of the
thrombolytic agents streptokinase and tissue plasminogen activator (t-PA) in
patients with acute ischemic stroke. Intravenous t-PA, administered within 3
hours of symptom onset at a dose of 0.9 mg/kg, is safe and effective in carefully
selected patients
Keywords: ACUTE ISCHEMIC STROKE/anticoagulant/ANTITHROMBOTIC
THERAPY/aspirin/ENGLAND/formation/HEPARIN/ischemic
stroke/plasminogen activator/PREVENTION/stroke/stroke
prevention/t-PA/thrombus/TRIALS
Etminan, M. and Levine, M. (1999), Interpreting meta-analyses of pharmacologic
interventions: The pitfalls and how to identify them. Pharmacotherapy, 19 (6),
741-745.
Abstract: Meta-analyses are key components of evidence-based decision making. The
numbers of meta-analyses published in different areas of health care increased
dramatically during the past 10 years. Many of them covered different
pharmacologic interventions, making them useful resources to clinical
pharmacists. Although a well-conducted meta-analysis may be valuable, a pearly
conducted one may have false conclusions and thus incorrectly alter a clinician's
recommendations. Several key concepts must be considered when appraising
meta-analyses of pharmacologic interventions
Keywords: BLOOD-PRESSURE/decision-making/ENGLAND/health/health
care/HEART-DISEASE/INDOMETHACIN/meta-analysis/METAANALYSIS/
MYOCARDIAL-INFARCTION/NONSTEROIDAL ANTIINFLAMMATORY
DRUGS/pharmacists/PRAVASTATIN/PREVENTION/RANDOMIZED
TRIALS/STROKE
Bungard, T.J., Ackman, M.L., Ho, G. and Tsuyuki, R.T. (2000), Adequacy of
anticoagulation in patients with atrial fibrillation coming to a hospital.
Pharmacotherapy, 20 (9), 1060-1065.
Abstract: Study Objective. To evaluate the adequacy of anticoagulation in patients with
atrial fibrillation (AF) coming to a hospital. Design. Retrospective medical
record review Setting. Tertiary care hospital. Patients. Consecutive patients with
a history of AF who had been prescribed warfarin and who had the international
normalized ratio (INR) measured when they arrived at the hospital. Those who
developed AF as a complication during hospitalization were excluded.
Measurements and Main Results. Of 1085 patients, 375 (mean age 73 yrs, 56.3%
men) were eligible for further evaluation. Most had nonvalvular AF; in 44.5%
the INR was subtherapeutic, in 36.5% it was therapeutic, and in 18.9% it was
supratherapeutic. Patients admitted for any thromboembolic event and for
ischemic stroke were significantly more likely to have subtherapeutic INRs.
Conclusion. It is well documented in the literature that warfarin is
underprescribed, but our results suggest that even in treated patients, about half
are inadequately protected from thromboembolism
Keywords: AF/age/anticoagulation/atrial
fibrillation/CARE/ENGLAND/evaluation/fibrillation/history/hospital/hospitaliza
tion/INR/international normalized ratio/ischemic/ischemic
stroke/MANAGEMENT/men/review/stroke/STROKE
PREVENTION/thromboembolism/TRIALS/WARFARIN
Sharp, R.P. and Havrda, D.E. (2002), Possible effect of refrigeration of warfarin on the
international normalized ratio. Pharmacotherapy, 22 (1), 102-104.
Abstract: A 43-year-old African-American woman taking warfarin for prevention of
ischemic stroke experienced fluctuating international normalized ratio (INR)
values over 8.5 months; no cause could be identified. After reading a pharmacy
information sheet that accompanied a warfarin refill, she reported that she had
been refrigerating her warfarin because her other drugs had been "sticking
together." She then was instructed to store her warfarin at room temperature.
During the 8.5 months she had been refrigerating her warfarin, 80% of her INR
values had been outside her goal range versus 37.5% during 9 months of storage
at room temperature. A MEDLINE search and communication with the drug's
manufacturer provided no information regarding storage of warfarin outside the
temperature range of 59-86 degreesF and resultant changes in potency of the
drug. Because of potential fluctuation in anticoagulation control, patients should
be reminded to store their warfarin at room temperature
Keywords: African
American/anticoagulation/changes/control/drug/drugs/ENGLAND/INR/internati
onal normalized ratio/ischemic/ischemic
stroke/pharmacy/prevention/stroke/USA/warfarin
Keyser, A. (1993), Platelet-Aggregation Inhibitors in Neurology. Pharmacy World &
Science, 15 (6), 243-251.
Abstract: This literature review reports on secondary prevention bf ischaemic stroke.
The aim of secondary prevention is to protect patients who belong to a risk group
from the occurrence of brain infarction. Symptomatic patients with a
demonstrated carotid artery stenosis of 70% and more will most probably benefit
from carotid endarterectomy if performed by a skilled surgeon in the absence of
contraindications. Oral anticoagulant drugs play a minor role in the medical
prevention of brain infarction. Antiplatelet drugs, however, have been in use for
almost two decades and (meta-)analysis of clinical trials points io acetylsalicylic
acid as a drug with a modest but certain contribution of about 15% in the
endpoint reduction, even at lower dosages. The addition of dipyridamole to
classic acetylsalicylic acid dose appears to increase the endpoint reduction to
30%. Neither dipyridamole nor sulfinpyrazone as monotherapy have been
demonstrated to be efficacious in the secondary prevention of ischaemic stroke.
Ticlopidine seems a promising alternative for acetylsalicyclic acid in those
patients who suffer adverse effects from acetylsalicylic acid. Ticlopidine itself,
however, has a number of side-effects that limit its application. New clinical
trials are under way in order to improve the efficacy of drug treatment in the
secondary prevention of brain infarction
Keywords: acetylsalicyclic acid/ACETYLSALICYLIC
ACID/ACETYLSALICYLIC-ACID/ADVERSE EFFECTS/carotid/carotid
endarterectomy/CEREBRAL INFARCTION/CEREBRAL
ISCHEMIA/CEREBRAL-
ISCHEMIA/CEREBROVASCULAR-DISEASE/clinical trials/CONTROLLED
TRIAL/DIPYRIDAMOLE/DOSAGE/endarterectomy/LOW-DOSE
ASPIRIN/prevention/PRIMARY
PREVENTION/PROGNOSIS/risk/SECONDARY
PREVENTION/STROKE/SULFINPYRAZONE/TICLOPIDINE/TRANSIENT/
TRANSIENT ISCHEMIC ATTACKS/treatment/trials
Krest, I. and Keusgen, M. (1999), Stabilization and pharmaceutical use of alliinase.
Pharmazie, 54 (4), 289-293.
Abstract: In recent years, numerous clinical trials were undertaken in order to elucidate
the active principle of garlic (Allium sativum L., Alliaceae). The most prominent
effect of garlic preparations is a contribution to the prevention of stroke and
arteriosclerosis. Allicin [(2-propenyl)-2-propenethiosulfinate] and other sulfur
containing compounds were suggested as active compounds. The extremely
unstable allicin itself is liberated from the more stable alliin
[S-(+)-2-propenyl-L-cysteine sulfoxide] by the enzyme alliinase (EC 4.4.1.4) if
fresh garlic is crunched or garlic powder is moistened. Therefore, an active
enzyme is required in alliin containing remedies like those prepared from garlic
powder. In order to investigate enzyme stability, alliinase was isolated from
garlic powder. The partially purified enzyme could be stabilized over several
months by addition of sodium chloride, sucrose, and pyridoxal- 5'-phosphate.
Alliinase may also be freeze-dried. This allows combinations of synthetic alliin
and purified alliinase as components of an acid resistant tablet or capsule. In the
intestine, the pro-drug alliin would be enzymatically converted to allicin. In
clinical trials, highly dosed preparations of this kind should yield a precise
information about the physiological effects of allicin. In addition, alliin-
homologues substances which bear a modified alkyl side chain and do not occur
in nature may be tested
Keywords: ALLICIN/arteriosclerosis/C-S LYASES/clinical trials/GARLIC
ALLIUM-SATIVUM/HIGHER-PLANTS/OXIDATION/prevention/PURIFICA
TION/sodium/stroke/trials
Khaw, K.T. (1997), Epidemiological aspects of ageing. Philosophical Transactions of
the Royal Society of London Series B-Biological Sciences, 352 (1363),
1829-1835.
Abstract: A major societal challenge is to improve quality of life and prevent or reduce
disability and dependency in an ageing population. Increasing age is associated
with increasing risk of disability and loss of independence, due to functional
impairments such as loss of mobility hearing and vision; a major issue must be
how far disability can be prevented. Ageing is associated with loss of bone tissue,
reduction in muscle mass, reduced respiratory function, decline in cognitive
function, rise in blood pressure and macular degeneration which predispose to
disabling conditions such as osteoporosis, heart disease, dementia and blindness.
However, there are considerable variations in different communities in terms of
the rate of age-related decline. Large geographic and secular variations in the
age-adjusted incidence of major chronic diseases such as stroke, hip fracture,
coronary heart disease, cancer, visual loss from cataract, glaucoma and macular
degeneration suggest strong environmental determinants in diet, physical activity
and smoking habit. The evidence suggests that a substantial proportion of
chronic disabling conditions associated with ageing are preventable, or at least
postponable and not an inevitable accompaniment of growing old. Postponement
or prevention of these conditions may riot only increase longevity, but, more
importantly, reduce the period of illnesses such that the majority of older persons
may live high-quality lives, free of disability, until very shortly before death. We
need to understand better the factors influencing the onset of age-related
disability in the population, so that we have appropriate strategies to maintain
optimal health in an ageing population
Keywords: age/blood pressure/CHOLESTEROL/cognitive function/coronary heart
disease/CORONARY
HEART-DISEASE/dementia/diet/diseases/ENGLAND/HEALTH/heart/incidenc
e/LOWER BLOOD-PRESSURE/MORTALITY/muscle/osteoporosis/physical
activity/PREVENTION/quality of life/risk/SALT
REDUCTION/SMOKING/STROKE/TRIALS
Kammer, C.S., Young, C.C. and Niedfeldt, M.W. (1999), Swimming injuries and
illnesses. Physician and Sportsmedicine, 27 (4), 51-+.
Abstract: Swimming has a distinct profile of injuries and medical conditions. Common
problems seen among swimmers include 'swimmer's shoulder,' an overuse injury
that causes inflammation of the supraspinatus and/or the biceps tendon; overuse
injuries of the elbow, knee, ankle, and back; medical conditions such as asthma,
folliculitis, and otitis externa; and problems associated with overtraining.
Swimmers are more likely to comply with treatment plans that minimize time
spent out of the water. Prevention and treatment of musculoskeletal injuries often
focus on proper stroke mechanics
Keywords: COMPETITIVE
SWIMMERS/elbow/ELITE/inflammation/LAXITY/MUSCLE/overuse
injury/PAIN/PHYSICIAN/SHOULDER/STRENGTH/stroke/treatment
Johnson, J.N., Gauvin, J. and Fredericson, M. (2003), Swimming biomechanics and
injury prevention - New stroke techniques and medical considerations. Physician
and Sportsmedicine, 31 (1), 41-46.
Abstract: Shoulder injuries are common in swimmers of all ages and abilities. Advances
in the understanding of biomechanics help identify and correct stroke flaws to
prevent shoulder injury. Physicians can demonstrate correct pull patterns and
body alignment in an office setting, and proper coaching can help correct
mistakes made in the water. If injury occurs, swimmers can employ rehabilitation
techniques, including preventive scapular stabilization exercises, to prevent
recurrence. The treating physician and physical therapist who understand stroke
technique and prevention concepts may help decrease the incidence of
swimming-related shoulder injuries
Keywords: ATHLETIC
SHOULDER/biomechanics/incidence/injury/medical/MUSCLES/PHYSICIAN/p
revention/recurrence/REHABILITATION/shoulder/stroke/SWIMMERS/USA
Inzitari, D. (1993), Therapeutic Approach to Symptomatic and Asymptomatic Carotid
Stenosis. Platelets, 4 18-19
Keywords: ASPIRIN/BLOOD-PRESSURE/DISEASE/ISCHEMIC
ATTACKS/PREVENTION/STROKE/TICLOPIDINE
Nenci, G.G. (1993), Antithrombotic Therapy of Peripheral Vascular-Disease. Platelets,
4 21-23
Keywords: ASPIRIN/DIPYRIDAMOLE/INDOBUFEN/INTERMITTENT
CLAUDICATION/PREVENTION/RISK/STROKE/TICLOPIDINE/TRIAL
Pathansali, R., Smith, N.M. and Bath, P.M.W. (2001), Prothrombotic megakaryocyte
and platelet changes in hypertension are reversed following treatment: a pilot
study. Platelets, 12 (3), 144-149.
Abstract: Platelets are formed from, and their function determined by, bone marrow
megakaryocytes (MK). Previous studies have found that hypertension is
associated with accentuated platelet function and that some anti-hypertensive
drug classes have antiplatelet activity. We measured MK ploidy (DNA content),
size, granularity, and expression of the adhesion molecule glycoprotein (GP) IIIa,
using flow cytometry and measures of platelet function, in 12 untreated
hypertensive patients and 14 normotensive subjects. Eight hypertensive patients
were then treated with losartan (50 mg daily), an angiotensin receptor antagonist
that lowers blood pressure, and MK and platelet parameters re-measured after 6
weeks. Hypertensive patients had, as compared with matched normotensive
subjects: increased MK ploidy (mean +/- SD) 22.9 +/- 2.2 N versus 20.8 +/- 1.6
N (2P = 0.009); increased platelet size, 10.67 +/- 1.03 fl versus 9.26 +/- 0.72 fl
(2P = 160/95 mm Hg on >= 2 occasions within 3 months or
received antihypertensives, High proportions of cases (82%) and controls (85%)
were on treatment. There was a continuous relationship between the risk of
stroke and levels of BP control. Of 73 cases and 135 controls who were
hypertensive and responded to the postal questionnaire, 56 and 83%, respectively,
were aware of hypertension (P 18 on the
HAM-D-17 and score :9 on the HAM-D-6. Approximately 10% of the
sertraline-treated group developed depression according to either definition,
whereas 30% developed depression in the placebo group. On the HAM-D-6 the
superiority of sertraline to placebo was demonstrated already after 6 weeks of
therapy. Treatment was well tolerated; patients treated with sertraline
experienced significantly fewer adverse events
Keywords: acute/acute ischemic stroke/adverse
events/Denmark/depression/FLUOXETINE/FOLLOW-UP/FUNCTIONAL
RECOVERY/ischemic/ischemic stroke/LABILITY/POSTSTROKE
DEPRESSION/prevention/stroke/stroke
patients/THERAPY/treatment/TRIAL/USA
Helmert, U. and Shea, S. (1994), Social Inequalities and Health-Status in Western
Germany. Public Health, 108 (5), 341-356.
Abstract: Study Objective: To examine social class gradients for seven self-reported
diseases in western Germany. Design: A pooled analysis of three cross-sectional
representative health surveys in western Germany and three health surveys in the
six intervention regions of the German Cardiovascular Prevention Study.
Participants: 44,363 study subjects, of both sexes, with German nationality, aged
25-69 years, were examined in the national and regional health surveys from
1984 to 1991. Measurement and main results: Assessment of disease prevalence
was carried out by a standardized self-administered questionnaire. Social class
was assessed using a composite index combining educational achievement,
occupational status and household income. Cigarette smoking and Pattern A
behaviour were based on self-report. Height and weight were measured by
physical examination and body mass index was calculated. Statistical analysis
were performed using multiple logistical regression. Response rates ranged from
66.0 to 71.4% in the national surveys and from 65.9 to 83.8% in the regional
surveys. For both sexes, the prevalence of previous myocardial infarction and the
prevalence of stroke, diabetes mellitus and chronic bronchitis was significantly
higher in the lower social classes. In males only, the prevalence of intervertebral
disc damage and peptic ulcer was significantly higher in the lower social classes.
In females only, there was a similar gradient for hyperuricaemia and gout. In
both sexes, allergies and hay fever were the only diseases with higher prevalence
in the higher social classes. Adjusting these trends for smoking, obesity and
Pattern A behaviour resulted in only minor changes in the slopes of the
disease-specific social class gradients. Conclusion: In western Germany, despite
a health system with almost free access for the general population, strong social
class inequalities exist for many diseases. These inequalities cannot be explained
by social class differences in smoking, obesity or Pattern A behaviour. More
research is needed to identify underlying causes for these persistent social
inequalities in health status
Keywords: aged/diabetes
mellitus/DISEASE/diseases/EDUCATION/ENGLAND/HEALTH/INEQUITIES
/myocardial infarction/smoking/stroke/SWEDEN
Smith, G.D., Shipley, M.J., Batty, G.D., Morris, J.N. and Marmot, M. (2000), Physical
activity and cause-specific mortality in the Whitehall study. Public Health, 114
(5), 308-315.
Abstract: A prospective cohort study of London civil servants was used to examine the
relation of physical activity to various causes of death. 6.702 men aged 40-64y
who participated in a baseline examination between 1969 and 1970 were
followed up for 25y during which time there were 2859 deaths. The association
of two measures of physical activity (leisure time activity and usual walking pace)
with cause-specific mortality was examined. Walking pace demonstrated inverse
relations with mortality from all-causes, coronary heart disease (CHD), other
cardiovascular disease (CVD), all cancers, respiratory disease, colorectal cancer
and haematopoietic cancer following adjustment fur risk factors which included
age, employment grade, smoking, body mass index, and forced expiratory
volume (P [trend] 7.2 mmol/l) was at lower risk than a man with low
cholesterol (20% in
the EC). Functional recovery on hospital discharge was worse in the group with
systemic complications (IB: 43.05+/--34.1: as compared with IB: 72.8+/--22.7 in
the group without complications). This difference persisted after 3 months.
Conclusions. Systemic complications related to hospitalization have a negative
effect on the functional recovery of patient with ictus and also prolong the time
spent in hospital
Keywords: age/CEREBRAL INFARCTION/cerebrovascular/cerebrovascular
disease/complications/CONTROLLED TRIAL/DEATH/hospital/hospital
morbidity/hospitalization/HYPERGLYCEMIA/ischemic/ISCHEMIC
CEREBROVASCULAR-DISEASE/MANAGEMENT/MORTALITY/NATURA
L-HISTORY/prevention/prospective
study/RISK/SPAIN/stroke/treatment/vascular/vascular disease
Biller, J. (1997), Treatment protocol for stroke. Revista de Neurologia, 25 (137), 114
Keywords: PREVENTION/SPAIN/stroke
AlvarezSabin, J., Calvo, G. and Morros, R. (1997), Secondary prevention of ischaemic
strokes: Effect of dosage of aspirin. Revista de Neurologia, 25 (140), 541-544.
Abstract: Introduction and objective. The value of acetylsalicilic acid (AAS) in the
secondary prevention of ischemic stroke is well established. However, the
optimum dose of AAS for stroke- threatrened patients remains unsettled. This
paper reviews the pattern of adverse reactions to AAS and their relationship to
the dosage of AAS evaluated. Method. All the clinical trials in which AAS was
used as the sole antiaggregant in the secondary prevention of ischemic stroke
were reviewed. The crude odds ratio for the different adverse reactions was
calculated using three sub tests: AAS versus placebo; AAS330 mg/d; and each dosage level versus a placebo. Results. There is an
increased risk associated with the use of AAS as compared to a placebo with
respect to gastrointestinal bleeding (OR 2.3, IC 95% (1.6-4.1)), peptic ulcer (10.1
2.5-85.2)), intracerebral hemorrhage (2.2 (1.3-4)) and other hemorrhagic
phenomena (2.6 (2-3.3)). Conclusions. There seems to be a direct relationship
between the dosage of AAS and the frequency with which adverse reactions
occur, except in the case of intracerebral hemorrhage. In the latter case there was
no relationship with the dose give (0.8 (0.5-1.4))
Keywords: aspirin/ATTACKS/CEREBRAL-ISCHEMIA/clinical trials/dose of
aspirin/hemorrhage/intracerebral hemorrhage/ischemic/ischemic stroke/platelet
antiaggregation/prevention/RANDOMIZED TRIAL/RISK/secondary
prevention/SPAIN/stroke/stroke prevention/trials/WARFARIN
MatiasGuiu, J., AlvarezSabin, J. and Codina, A. (1997), A comparative study of the
effect of low doses of acetylsalicylic acid and triflusal in the prevention of
cardiovascular incidents in young adults with ischemic cerebrovascular disease.
Revista de Neurologia, 25 (147), 1669-1672.
Abstract: Introduction. The effectiveness of the low doses AAS in the prevention of the
cerebral infaction has not been clearly still verified. Objective. To compare the
long term effectiveness of the treatment with low doses AAS in front of triflusal
in the reduction of the stroke, ischemic cardiopathy, and cardiovascular death
risks. Material and methods. Of 386 patients with a first ischemic stroke, 217
were selected (106 triflusal, 111 AAS) that had completed the approaches of
atheromatous infarct (161 males, 72.2% and 58 female, 25.8%). The mean age
was 43 years (standard deviation, SD 6.4, 95% CL 20-50). The patients received
one of theses treatments: a) AAS (Sedergine(R)) 330 mg/day (once a day); b)
triflusal (Disgren(R)), 900 mg/day (300 mg 3 times a day). The mean time of
follow-up for the group triflusal was of 48.3 months (20- 94), while for the group
AAS it was of 46.3 months (2-84). Results. The combined incidence of cerebral
infarcts, ischemic cardiopathy and vascular death was 19.8% in the patients
treated with triflusal, and 28.8% in the patients treated with AAS what supposes
a reduction of the risk of the 39% (OR 0.61, CL 0.30-2.01). In the subgroup of
patients with carotid stenoses of more than 70% demonstrated by angiography,
triflusal produces a significant reduction of risk (OR 0.30, CL 0.10-0.90). Also,
triflusal reduced in 76% the risk of hemorrhagic complications in comparison of
the AAS (OR 0.24; IC 0.06-0.94). Conclusions. The study adds new doubts
about the effectiveness of the low doses of AAS in the secondary prevention of
the cerebral infarct. The triflusal shows effectiveness in subgroup of high risk
and a significant reduction of the hemorrhagic complications that would be
confirmed in controlled clinical trials with a greater number of patients
Keywords: acetylsalicylic acid/adults/age/antiplatelet
drugs/ASPIRIN/aspirin/carotid/cerebral/cerebrovascular/cerebrovascular
disease/clinical trials/complications/incidence/ischemic/ischemic
cardiopathy/ischemic stroke/prevention/risk/secondary
prevention/SPAIN/STROKE/stroke/SUBGROUPS/treatment/trials/triflusal/vasc
ular/young adults
LopezPousa, S., MercadalDalmau, J., MartiCuadros, A.M., VilaltaFranch, J. and
LozanoGallego, M. (1997), Triflusal in the prevention of vascular dementia.
Revista de Neurologia, 25 (146), 1525-1528.
Abstract: Introduction. Vascular dementia is the second commonest cause of dementia
after Alzheimer's disease. The most important risk factor for this is previous
cerebral vascular accident. Objective. To eliminate the risk factors and/or
progression of this illness would be of considerable benefit to these patients.
Triflusal, a platelet anti-aggregant chemically I elated to the salicylates, whose
clinical efficacy has been shown in cardiac and cerebrovascular pathology, has
been used in the treatment of patients with vascular dementia. Material and
methods. Ail open study was done a sample of 73 patients with vascular
dementia randomly distributed into two groups (control and undergoing
treatment with triflusal). Results. To check the efficacy of treatment with triflusal,
the percentage of variation in the scoring of the Cognitive Mini Examination was
used after a clinical course of 12 months (IVP 12), considering the critical point
of no efficacy to be a loss equal ol greater than 10%. In the control group, 33%
(8/24) and in the group treated with triflusal 8% (3/35) had a negative course
which was greater than this critical point. Conclusions. The difference in the IVP
12 between the two groups was statistically significant (p=0.0375), with a
statistical power of 87% (beta=0.13). This gives triflusal a therapeutic activity
which is sufficient to limit cognitive deterioration of patient with vascular
dementia
Keywords: anti-aggregants/ASPIRIN/cerebral/CEREBRAL
BLOOD-FLOW/cerebrovascular/control/dementia/DIAGNOSIS/DISEASE/HOS
PITALIZED COHORT/LESIONS/MULTI-INFARCT
DEMENTIA/prevention/risk/risk
factors/RISK-FACTORS/SPAIN/STROKE/treatment/TRIAL/triflusal/vascular/v
ascular dementia
Vila, N. and Chamorro, A. (1997), The effect of clinical trials on hospital admission for
stroke. Revista de Neurologia, 25 (143), 1129-1131.
Abstract: Objective. To analyze the contribution of clinical trials in the hospital
treatment of acute ischaemic cerebrovascular disease. Development. In recent
studies many trials have been designed for the treatment of the acute phase of
this illness. Based on experimental studies, the drugs used in the trial need to be
given within a 'therapeutic window' of less than six hours from the onset of the
illness. This time factor has led to a radical change in the organization of hospital
services dealing with this illness. In order to run clinical trials the medical staff
have had to be organized into functional stroke units for the swift protocolized
diagnosis of the condition. Also information has to be given to health workers
regarding the need for urgent specialized treatment. Several studies have shown
that early, specialist treatment reduces morbi-mortality, time spent in hospital
and financial cost in these patients. Conclusion. Clinical trials in acute
cerebrovascular pathology have formed the basis for the creation of stroke units,
led to the drawing up of protocols for the diagnosis and guidelines for treatment.
It has also made the medical profession more aware of the importance of early
diagnosis and specialized treatment in acute cerebral ischemia
Keywords: ACUTE ISCHEMIC STROKE/CARE/cerebral/cerebral
ischemia/cerebrovascular/cerebrovascular disease/clinical
trials/cost/diagnosis/drugs/guidelines/health/hospital/ischemia/MANAGEMENT/
PREVENTION/protocols/SPAIN/stroke/stroke units/THERAPY/treatment/trials
Palomeras, E., Roquer, J. and Pou, A. (1998), Oral anticoagulation in the prevention of
secondary cerebral vascular disease. A long-term follow-up of 169 patients.
Revista de Neurologia, 27 (159), 772-776.
Abstract: Introduction. Although the indications for oral anticoagulation (AO) in the
treatment of cerebral vascular disease (CVD) are well established, their potential
side effects continue to give cause for worry. Objectives. To describe the
complications and ischemic relapses inpatients treated with AO for secondary
prevention of CVD of cardiac embolic origin. Patients and methods. We included
169 patients with embologenic cardiopathy who,following an CVD, were treated
with AO and followed-up at our medical centre for at least three months, We
recorded their past clinical history and risk factors, occurrence of vascular
relapses (VR), complications involving hemorrhage (CH), and data regarding
course and follow-up. Results. During an average follow-up of 50.3 months of a
total of 707.9 patient/years, 20 VR (2.8% per year) were recorded; 15 of these
were cerebro- vascular and mainly mild. We recorded 59 CH in 41 patients
(8.3% per year) of which 6 were considered to be major: There was a 30%
drop-out rate from follow-up at our centre, mainly due to death from other causes
or to change referral centre. Conclusions. There is a low incidence of relapse and
of complications (usually mild) following AO for the secondary prevention of
CVD of cardio-embolic origin. Efficacy and security are maintained in the long
term [REV NEUROL 1998; 27:772-6]
Keywords: anticoagulation/cerebral vascular disease/complications/embologenic
cardiopathy/hemorrhage/HEMORRHAGIC
COMPLICATIONS/history/incidence/NONRHEUMATIC
ATRIAL-FIBRILLATION/oral
anticoagulation/OUTPATIENTS/prevention/risk/risk factors/secondary
prevention/SPAIN/STROKE/THERAPY/treatment/vascular/vascular
disease/WARFARIN
Sabin, J.A., Matias-Guiu, J., Galiano, L. and Puiggros, A.C. (1998), The risk of
hemorrhage in long-term treatment with aspirin and triflusal. Revista de
Neurologia, 27 (160), 951-955.
Abstract: Introduction. Different studies have shown that aspirin (AAS), in low doses,
may lend to a considerable frequency of hemorrhagic complications when used
in the long term. Objective. We compare the long-term occurrence of
hemorrhagic complications with low doses of AAS and high doses of triflusal.
Patients and methods. Our series included 106 patients who took 900 mg triflusal
per day (300 mg 3 times per day) and I I I who took AAS (330 mg/day once
daily). The former were followed up for an average period of 48.3 months (20-94)
and the latter for 46.3 months (2-84). The average follow-up period for the study
was 47.3 months. The presence of hemorrhagic complications was evaluated as
was their frequency and follow-up curve. Results. Compared with AAS, triflusal
led to a 76% reduction in risk of hemorrhagic complications (2.8% against
10.8%; OR 0.24; IC 0.06-0.94). There was a slightly increased incidence of
hemorrhages in the women's group. There were more hemorrhages than
gastrointestinal hemorrhages (4.5% against 0.9%) and intracranial hemorrhages
(1.8%-0.9%). The follow-up curve showed significant differences in the form of
an increased risk of hemorrhagic complications with AAS. Conclusions. The risk
of hemorrhage with AAS depended on the period of follow-up, in a similar
manner to with oral anticoagulant agents, in patients with prophylaxis of cerebral
infarct. On the other hand, this did not occur with triflusal, with which the risk
was homogeneous and lower in the long term [REV NEUROL 1998; 27: 951-5]
Keywords: ACETYLSALICYLIC-ACID/anticoagulant/antiplatelet
agents/aspirin/cerebral/complications/DIPYRIDAMOLE/hemorrhage/incidence/I
NHIBITION/intracerebral hemorrhage/ISCHEMIC
STROKE/prophylaxis/risk/SECONDARY
PREVENTION/Spain/stroke/SUBGROUPS/treatment/TRIAL/triflusal/YOUNG-
ADULTS
Davalos, A. and Suner, R. (1999), Monitoring and the management of strokes in the
acute phase. Revista de Neurologia, 29 (7), 622-627.
Abstract: Introduction. Treatment of acute strokes in a Stroke Unit reduces intrahospital
mortality and dependence by 29%. One year later this effect is still present. It is
not known whether the use of intermediate care in the so-called Acute Stroke
Units, with continuous cardiovascular and neurological monitoring, provides
further benefit in addition to that obtained by specialized care units in which
monitoring is carried out at the usual intervals. Development and conclusions. In
this article we analyze the advantages of Acute Stroke Units in the application of
new treatments and their potential benefits in the prevention of medical
complications, we also review the general recommendations for treatment in the
acute phase of strokes [REV NEUROL 1999; 29: 622-7]
Keywords: acute/ACUTE ISCHEMIC STROKE/acute stroke/BLOOD-
PRESSURE/cardiovascular/CEREBRAL-ARTERY
INFARCTION/complications/CONTROLLED
TRIAL/monitoring/mortality/prevention/PROGNOSIS/PROPHYLAXIS/review/
Spain/stroke
unit/TEMPERATURE/THERAPY/THROMBOSIS/treatment/UNITS
Vivancos-Mora, J., Leon-Colombo, T. and Monforte-Dupret, C. (1999), Hypolipemic
treatment in the prevention of atherosclerotic plaque complications. Revista de
Neurologia, 29 (9), 857-863.
Abstract: Introduction and objective. Hypercholesterolemia has been shown to be a
definite risk factor for coronary disease, although its relevance in cerebrovascular
disease is more controversial. This study reviews the part played by different
hypolipemic treatments in primary and secondary prevention of the
complications of atherothrombotic diseases, particularly stroke. Development.
We based our study mainly on the HMG-CoA inhibitors (3-hydroxyl 3 methyl
glutaryl coenzyme A) reductase, or statines. This group of drugs acts by,
inhibiting the synthesis of cholesterol and increasing the expression of LDL-c
receptors, achieving a 25-35% lowering of plasma LDL-c levels. In diverse
clinical trials they have been shown to have a beneficial effect in the prevention
of cardiovascular disease. The results of these studies indicate that in addition to
their purely hypolipemic effect, other antiatherothrombotic mechanisms are
involved. We analyse the main studies on hypolipemic drugs in the primary and
secondary prevention of coronary and cardiovascular disease. Conclusions. The
role of statines is clearly defined in reduction of the risk of overall and
cardiovascular mortality and also in reduction of the incidence of cardiovascular
incidents inpatients with a past history of coronary disease and a cholesterol level
over 155 mg/dl. Reduction of the risk from cerebrovascular disease has only
been observed in primary prevention studies; (patients with a past history of
coronary disease). Therefore, we shall have to await the results of the clinical
trials currently being carried out to determine the true role of statines in the
secondary prevention of cerebrovascular disease
Keywords: acute cerebrovascular disease/arteriosclerosis/AVERAGE CHOLESTEROL
LEVELS/cardiovascular disease/cardiovascular mortality/CAROTID
ATHEROSCLEROSIS/cerebrovascular/cerebrovascular
disease/cholesterol/CLINICAL EVENTS/clinical trials/COA REDUCTASE
INHIBITORS/complications/coronary disease/CORONARY- ARTERY
DISEASE/diseases/drugs/history/HYPERCHOLESTEROLEMIA/hypolipemic
treatment/incidence/MEN/mortality/myocardial
infarct/plaque/PRAVASTATIN/prevention/primary
prevention/PROGRESSION/prophylaxis/receptors/risk/risk factor/secondary
prevention/Spain/statines/stroke/STROKE/treatment/trials
Berciano, J. (1999), From the genetics to the prevention of stroke. Revista de Neurologia,
29 (9), 836-847.
Abstract: Genetic risk factors implicated in stroke are reviewed. There is evidence that
family history of vascular disease is an independent risk factor for stroke. Twin
studies demonstrated that there is a genetic component for stroke. I review the
possible pathogenetic relevance of several vascular risk factors, namely
dyslipoproteinemia, Lp(a), ApoE, homocystein, and prothrombotic states. Finally,
I carry out an overview of genetic monogenic disorders manifesting with embolic
stroke, thrombotic stroke or hemorrhagic stroke. This review corroborates that
there are many genetic risk factors of stroke, though further studies will be
necessary, to establish whether ol not these factors ave pathogenetically
independent from acquired factors
Keywords: CADASIL/embolism/genetic/genetics/hemorrhage/HEREDITARY
HEMORRHAGIC TELANGIECTASIA/history/INTRACRANIAL
ANEURYSMS/ISCHEMIC
CEREBROVASCULAR-DISEASE/MANIFESTATIONS/MOYAMOYA-
DISEASE/prevention/PROTEIN-C RESISTANCE/PROTHROMBOTIC
STATES/risk/risk factor/risk
factors/SNEDDONS-SYNDROME/Spain/stroke/thrombosis/vascular/vascular
disease/YOUNG-ADULTS
Alvarez-Sabin, J. and Montaner-Villalonga, J. (1999), Antiplatelet therapy of secondary
stroke prevention after ESPS- 2 and CAPRIE. Revista de Neurologia, 29 (8),
780-784.
Abstract: Introduction. Antiplatelet therapy is effective for secondary prevention of
atherothrombotic stroke. Aspirin, the more frequently used antiplatelet drug,
prevents 13 to 17% of ischemic events after stroke. New and more effective
antiplatelet therapies are needed. Development. Two large secondary stroke
prevention trials have been recently published (CAPRIE and ESPS-2), including
more than 25,000 patients. As well TACIP trial designed to assess the efficacy of
triflusal, is close to end. The combination of ticlopidine and Aspirin has shown
synergistic effect. Conclusions. Clopidogrel, like ticlopidine, increase 9% the
relative risk reduction of stroke over Aspirin. Clopidogrel has a better safety
profile than ticlopidine. Dipyridamole is an effective antiplatelet drug but in
combination with low doses of Aspirin is more effective. The possible efficacy
of clopidogrel-Aspirin combination should be evaluated [REV NEUROL 1999;
29: 780-4]
Keywords: antithrombotic therapy/ASPIRIN/aspirin/clopidogrel
dipyridamole/DIPYRIDAMOLE/ischemic/prevention/relative
risk/risk/safety/secondary prevention/secondary stroke
prevention/Spain/stroke/stroke
prevention/therapy/TICLOPIDINE/TRIAL/trials/triflusal
Ameriso, S.F. (1999), Treatment of cerebrovascular disease with anticoagulants and
platelet anti-aggregants. Revista de Neurologia, 29 (12), 1285-1290.
Abstract: Introduction. The use of anticoagulants and platelet anti- aggregants is one of
the basic features of the management of patients with cerebrovascular disease.
Development. The indications for the use of these agents have evolved from
initial empirical use based on anecdotic evidence to current recommendations
following multi-centre trials. Aspirin, ticlopidine, clopidogrel and warfarin are
drugs of choice for secondary prevention of ischemic stroke (IS). Anticoagulants
are used more inpatients with IS of cardio-embolic origin. The use of
anti-aggregants/anticoagulation in acute IS has not been shown to be clearly
effective and its use is limited to particular cases in which fibrinolytic treatment
cannot be used. For satisfactory use of these drugs it is essential to correctly
identify the type of IS and its progress over time. This article reviews the criteria
established for the use of such treatment and describes the developing areas of
multi- centre clinical trials [REV NEUROL 1999; 29: 1285-90]
Keywords: ACETYLSALICYLIC-ACID/acute/ACUTE ISCHEMIC
STROKE/AMERICAN-HEART-ASSOCIATION/anti-aggregant/anti-aggregant
s/anticoagulant/anticoagulants/ANTITHROMBOTIC
THERAPY/ATRIAL-FIBRILLATION/cerebral
infarction/CEREBRAL-ISCHEMIA/cerebrovascular/cerebrovascular
disease/clinical trials/clopidogrel/disease/drugs/essential/FACTOR-V
LEIDEN/inpatients/ischemic/ischemic
stroke/MYOCARDIAL-INFARCTION/PREVENTION/secondary
prevention/SPAIN/stroke/ticlopidine/treatment/trials/use/VENOUS
THROMBOEMBOLISM/warfarin
Chamorro, A. (1999), Oral anticoagulation in the secondary prevention of stroke.
Revista de Neurologia, 29 (8), 784-788.
Abstract: This review considers secondary prevention of ictus based on the use of oral
anticoagulant drugs. For this, we analyze separately the secondary preventive
aspects of the two most frequent ischemic aetiologies: cardioembolic and
atherothrombotic infarcts [REV NEUROL 1999: 29: 784-8]
Keywords: anticoagulant/anticoagulation/atherothrombotic
prevention/ATRIAL-FIBRILLATION/cardioembolic prevention/CEREBRAL
INFARCTION/DISEASE/drugs/INHIBITORS/ischemic/LACUNAR/oral
anticoagulation/PLATELET-
AGGREGATION/prevention/RECURRENCE/RISK-FACTORS/secondary
prevention/Spain/stroke/TRANSIENT ISCHEMIC ATTACKS/WARFARIN
Grau, A. and Buggle, F. (1999), Infection, atherosclerosis and ischemic stroke. Revista
de Neurologia, 29 (9), 847-851.
Abstract: The established risk factors for ischemic stroke no nor sufficiently explain all
clinical and epidemiological features of the disease, such as the winter peak of
stroke incidence, the decline of stroke during this century and the time point of
cerebral ischemia. A role of infectious disease as stroke risk factor may partly
explain above features. Several case-control studies with both hospital and
population control groups showed that acute infection within the preceding week
and mainly respiratory infection of both viral and bacterial origin increase the
risk of cerebral ischemia independent from other risk factors (odds ratio
2.9-14.5). Infection as a risk factor appears to be most important in young age
groups. Infection may cause a procoagulant state and thus, trigger thrombosis
and cerebral ischemia. There is increasing evidence for chronic infection as
stroke risk factor. A case-control study indicated chronic and recurrent bronchitis
to increase stroke risk. Two case-control and one cohort study showed that
chronic dental infection, mainly parodontitis, is a risk factor for stroke. There ape
conflicting results on chronic infection with cytomega-lovirus and insufficient
evidence for a role of Helicobacter pylorii infection in pathogenesis of stroke.
Seroepidemiological studies and analyses of carotid plaques indicate a role of
Chlamydia pneumoniae in ischemic stroke. However, causality can not yet be
inferred from present results. Acute and chronic infectious diseases are treatable
and partly preventable conditions. Their recognition as stroke risk factors could
therefore be important for stroke prevention
Keywords: acute/ACUTE
MYOCARDIAL-INFARCTION/age/ASSOCIATION/atherosclerosis/BRAIN
INFARCTION/CARDIOVASCULAR-DISEASE/carotid/case-control
studies/cerebral/cerebral ischemia/CEREBROVASCULAR
ISCHEMIA/CHLAMYDIA/Chlamydia pneumoniae/cohort
study/control/diseases/hospital/incidence/infection/INFLAMMATION/inflamma
tion/ischemia/ischemic/ischemic stroke/MORTALITY/prevention/risk/RISK
FACTOR/risk factor/risk factors/SPAIN/stroke/stroke incidence/stroke
prevention/thrombosis/YOUNG
Lainez, J.M. and Pareja, A. (2000), The medical treatment of intracerebral hemorrhage.
Revista de Neurologia, 31 (2), 174-179.
Abstract: Objective. To review the main aspects of the practical management of
intracerebral hemorrhage. Development. We begin by briefly reviewing the
pathophysiology, clinical features and recommended complementary
investigations which are necessary for satisfactory diagnosis and treatment.
These vary depending on the characteristics of the bleeding on neuroimaging,
age and clinical situation of the patient. We particularly consider the therapeutic
aspects, basically of medical treatment but also some aspects of surgical
treatment, both during the acute phase of bleeding, when the main objective is to
prevent and treat the neurobiological and systemic complications, such as the
specific underlying disorder or lesion causing the intracerebral hemorrhage, so as
to prevent further bleeding. The medical treatment: general measures,
mechanical ventilation control of blood pressure, the prevention and treatment of
raised intracranial pressure and the possibilities of specific medical treatment in
reducing the zone of ischemic penumbra are also reviewed Since surgical
treatment is controversial, we have considered the most generally accepted
indications for this and the different techniques used. Finally we review the risk
factors identified in cerebral hemorrhage which permit primary prevention
Keywords: acute/age/bleeding/blood pressure/CAVERNOUS
MALFORMATIONS/cerebral/cerebral
hemorrhage/complications/control/diagnosis/HEMATOMA/hemorrhage/intracer
ebral/intracerebral hemorrhage/INTRACRANIAL HEMORRHAGE/intracranial
pressure/ischemic/ischemic penumbra/MANAGEMENT/medical
treatment/pathophysiology/penumbra/prevention/primary/primary
prevention/PUTAMINAL HEMORRHAGE/RADIOSURGERY/review/risk/risk
factors/Spain/STROKE/SURGERY/surgical treatment/treatment
Gonzalez-Gonzalez, J.A. and Lozano, R. (2000), A study of the tolerability and
effectiveness of nicardipine retard in cognitive deterioration of vascular origin.
Revista de Neurologia, 30 (8), 719-728.
Abstract: Introduction. Nicardipine is a calcium antagonist which in previous trials has
been shown to be effective in the prevention of stroke and the treatment of its
sequelae, such as cognitive deterioration of vascular origin. We consider a phase
IV study at primary care level to analyze the tolerability and efficacy of a
retarded action formulation of 40 mg nicardipine. Patients and methods. In this
open, prospective, multicentric trial 6,375 patients took part, of whom 5,593
were evaluated (87.7%). All were diagnosed as having vascular-type dementia
(Hachinski >6) and were given treatment with nicardipine retard (40 mg/day/6
months). The patients were assessed on the Montorio (daily activity) and
SPMSQ (cognitive function) scales at the first visit and after one, three and six
months, together with a record of side effects. Results. Only 0.9% of the patients
recruited abandoned the study for problems of tolerability of the drug. The
average improvement seen on Montorio's test was statistically significant from
the first month, and reached 9% after six months. The 65.5% of the patients who
started the study in seriously deteriorated condition showed improvement after
six months. For the SPMSQ test, the average improvement was also statistically
significant from the first visit and over 40% after six months. There was
improvement in 64.4% of the patients who were severely deteriorated at the start
of the study. Conclusion. Nicardipine retard is a drug which is safe and effective
when used for the treatment of mental deterioration of vascular origin
Keywords: ARTERIES/calcium/calcium antagonist/CEREBRAL
BLOOD-FLOW/cognitive function/dementia/MULTI-INFARCT
DEMENTIA/nicardipine/prevention/primary/primary
care/Spain/stroke/treatment/trials/vascular/vascular cognitive impairment
Heros, R.C. (2001), Carotid endarterectomy and angioplasty: A surgical perspective.
Revista de Neurologia, 32 (3), 266-269.
Abstract: Introduction. Carotid endarterectomy (CE) is a well-established operation,
although recently it has been challenged by newer, less invasive procedures such
as carotid angioplasty with or without insertion of a stent. Development. In this
article the author gives his views on the use of CE in patients with carotid
stenosis, both those with and those without symptoms, and also those in whom
no definite indication has yet been established. In symptomatic carotid stenosis it
had been clearly shown that CE is an effective procedure for the prevention of
strokes and death from strokes in patients with carotid stenosis of over 70%,
provided that the patients have reasonable general health and life expectation.
there is only minor benefit from surgery inpatients with asymptomatic disease of
the carotid arteries and much less than in those with symptomatic carotid disease.
Therefore endarterectomy is recommended when there is obvious progression of
the degree of stenosis, especially when the stenosis has reached 70% or the
patient begins to complain of symptoms. One of the most serious complications
of CE is acute myocardial infarction. Conclusion. It is a good time to design
careful randomised studies to compare endarterectomy with angioplasty,
probably with stenting, in a selected group of patients at greater risk than those
accepted for endarterectomy
Keywords: acute/acute myocardial
infarction/angioplasty/arteries/asymptomatic/asymptomatic carotid
stenosis/carotid/carotid angioplasty/carotid arteries/carotid
endarterectomy/carotid
stenosis/complications/death/design/DISEASE/endarterectomy/health/infarction/
inpatients/myocardial/myocardial
infarction/prevention/risk/SPAIN/STENOSIS/stent/stenting/stroke/surgery/symp
tomatic carotid stenosis/symptoms/use
Legido, A. (2002), Prevention of epilepsy. Revista de Neurologia, 34 (2), 186-195.
Abstract: Objective. To review the preventive and prophylactic aspects of epilepsy.
Development. The description of the prevention of the causes of epilepsy
includes the measures to prevent epilepsy and epileptic seizures. The concept of
antiepileptogenesis is discussed according to the available information about the
role that both the classic and new antiepileptic drugs (AEDs) play in this process.
Neuroprotection is discussed in the context of the mechanisms of action of the
AEDs and of the mechanisms of neuronal lesion produced by the causes of
epilepsy or by the seizures themselves. Among the new therapeutic modalities
the current knowledge about the vagus nerve stimulator and the surgical
treatment is summarized. The potential future therapeutic modalities include
alternative medicine, farmacologic treatment of the epileptogenic focus, genetic
treatment and vaccination. Conclusions. The first step in preventing epilepsy is to
avoid the causes or the risk factors. Some classic AEDs have demonstrated to be
effective in the prophylaxis of provoked seizures (acute, symptomatic) but not of
unprovoked seizures (epileptic). The best knowledge of the pathogenesis and the
molecular and biological basis of epileptogenesis secondary to lesional causes,
suggest that antioxidant and neuroprotective agents, including the new AEDs,
may prevent epilepsy. There is a need to design studies with the goal of
demonstrating their antiepileptogenic and/or neuroprotective activity at different
ages in life. New and future therapeutic modalities may offer additional
preventive options
Keywords: acute/anticonvulsivants/antiepileptic drugs/ANTIEPILEPTIC
DRUGS/antiepileptogenesis/antioxidant/causes/CHILDREN/convulsions/design/
drugs/epilepsy/FEBRILE
SEIZURES/GENE-THERAPY/genetic/INTRACTABLE
EPILEPSY/knowledge/mechanisms/METAANALYSIS/NERVE-STIMULATIO
N/neuroprotection/pathogenesis/prevention/prophylaxis/PROPHYLAXIS/review
/risk/risk factors/secondary/SPAIN/STROKE/SURGERY/surgical
treatment/treatment
Casanova-Sotolongo, P., Casanova-Carrillo, P. and Casanova-Carrillo, C. (2002), Aids:
Is it a risk factor in cerebrovascular disease? Revista de Neurologia, 35 (9),
808-811.
Abstract: Introduction. Cerebrovascular disease (CVD) has become an important health
problem throughout the world. It is generally one the main causes of morbidity
and mortality in the world, especially in developed countries. In these countries
the frequency with which it appears is linked with the progress reached in the
organisation of the public health system and the higher economic and social
standards of their populations, which have given rise to prolonged life
expectancy and a greater number of elderly people. In poor countries, however,
in recent times there has also been an increase in the number of cases of this
entity, although there is no correspondence with the arguments mentioned above
concerning rich nations. The risk factors (RF) that are invoked when talking
about its genesis must always be taken into account when dealing with its
prevention. Aims. To draw attention to the increase in the number of CVD in an
under-developed country, apparently due to the high frequency of the acquired
immunodeficiency syndrome suffered by the population. Patients and methods.
A study was conducted involving all the patients admitted to the Hospital Central
de Beira between I January 1988 and 30 June 1999 with a clinical picture
compatible with a CVD. They had all been examined by a neurologist (always
the same one) and had also been submitted to serological tests to detect the
human immunodeficiency virus (HIV). Results. Of the 155 cases with CVD,
56.7% were HIV. Below the age of 50, CVD is generally not associated with any
other RF Conclusion. These findings show that we must expect an increase in the
morbidity and mortality from CVD in poor nations, which will balance out the
difference that existed up to a few years ago with the more developed countries.
The appearance of CVD in young subjects, without any other apparent cause,
will force us to rule out a possible HIV infection in high-risk individuals
Keywords: age/aids/ASSOCIATION/causes/cerebrovascular/cerebrovascular
disease/disease/elderly/health/high
risk/HIV/human/IMMUNODEFICIENCY-VIRUS INFECTION/infection/life
expectancy/morbidity/mortality/neurologist/population/PREVENTION/public
health/risk/risk factor/risk factors/SPAIN/STROKE
Ferrer, O., Plumacher-Rincon, Z., Arteaga-Vizcaino, M., Weir-Medina, J. and
Hernandez-Pernia, A. (2002), Silent cerebral infarct in patients with sickle cell
anemia. Revista de Neurologia, 35 (8), 716-719.
Abstract: Introduction. Stroke is a complication inpatients with sickle cell anemia (SCA),
in these is of importance the precocious diagnosis of silent cerebral infarcts(SCI).
Objective. To determine the incidence of SCI in patients with SCA without
neurological symptoms but with images in cerebral magnetic resonance (CMR).
Patients and methods. A total of 18 patients (13 males, 5 females) with ages
between 5 and 24 years (11.5+/- 4.9), without history of neurological alterations,
taken care at the Instituto Hematologico de Occidente-Banco de Sangre, Estado
Zulia-Venezuela. A clinical history was made to each patient in addition to
detailed physical and neurological examinations that included the state of mind,
conscience, language, sensitivity, cranial pairs, muscular force, reflexes,
cerebella tests, neck and march. Later, CMR studies were carried out. Results. It
was found that 2118 (11.1%) patients without neurological manifestations
showed alterations in the CMR and they were diagnosed as SCI. The findings by
images showed asymmetry of lateral ventricles and one of them showed gliosis
as well. Conclusion. 11.1% of the all the studied cases (2118) showed SCI for
what is suggested to carry out neurological evaluation and images, once a year,
and to offer opportune therapies, for their impact in the function neurocognitive
Keywords:
anemia/cerebral/CEREBROVASCULAR-DISEASE/CHILDREN/diagnosis/eval
uation/history/incidence/inpatients/magnetic resonance imaging/neurological
alterations/PREVENTION/RECURRENT STROKE/RISK/sickle cell
anemia/silent cerebral infarct/SPAIN/stroke/symptoms/TRANSCRANIAL
DOPPLER ULTRASONOGRAPHY/TRANSFUSIONS/ventricles
Gonzalez-Garcia, S., Fernandez-Concepcion, O., Gonzalez-Quevedo, A.,
Fernandez-Carriera, R.A. and Valdes-Reina, M. (2003), The role of blood lipids
in the different aetiologies of cerebral infarction. Revista de Neurologia, 36 (7),
625-628.
Abstract: Introduction. In order to determine the role lipids play in cerebral infarction
(CI), the different aetiological subgroups of this disease should first be separated.
Aims and methods. We conducted case-control studies to identify whether there
is a relation between blood lipid levels and the occurrence of cerebral infarction
caused by atheromatosis (CIA). Our study involved a total of 98 patients with
cerebral infarction of an atherothrombotic or lacunar aetiopathogenesis that were
included in the CIA category. Two control groups were set up: one consisted of
23 patients with non-atheromatous cerebral infarction (NACI), which included
other aetiologies (cardioembolic, unusual and unspecified), and the other was
made up of 101 healthy subjects who had not had a stroke. Results. The group of
patients with CIA presented higher average cholesterol rates than the group of
subjects with NACI (p=0.005). Nevertheless, compared to the control group they
had higher average levels of cholesterol (p=0.003), triglycerides (p=0.011),
VLDL (p=0.028) and LDL (p=0.000), as well as a higher average atherogenic
index (p=0.028). Furthermore, the average levels of LDL (p=0.030) and the
atherogenic index (p=0.008) were seen to be statistically higher in the group of
subjects with NACI than in the control group. Lastly, it must be pointed out that
no differences in the average HDL levels were found between the three groups
studied (p=0.500). The presence of high blood pressure and a history of ischemic
heart disease inpatients with CI did not modify the variations that were observed
in the lipids. Conclusions. Patients with CIA have a more atherogenic lipid
profile than healthy individuals, while subjects with NACI are situated midway
between the two groups
Keywords: atherosclerosis/blood pressure/cardioembolic/case-control
studies/cerebral/cerebral
infarction/CEREBROVASCULAR-DISEASE/cholesterol/control/CORONARY-
HEART-DISEASE/DENSITY-LIPOPROTEIN
CHOLESTEROL/disease/FOLLOW- UP/HDL/heart/heart disease/high blood
pressure/history/infarction/inpatients/ischemic/ischemic heart
disease/ISCHEMIC STROKE/LDL/lipid
profile/lipids/MEN/MORTALITY/PRAVASTATIN/PREVENTION/risk
factors/RISK-FACTORS/SPAIN/stroke/triglycerides
Nogueira-Antunano, F., Nogueira-Bonanata, G.J. and Pla-Gaspari, G.B. (2003), An
exploratory study of the relation between cerebrovascular accidents and
personality structures. Revista de Neurologia, 36 (9), 821-828.
Abstract: Introduction. In recent years the psychological aspects linked with
cerebrovascular accidents (CVA)have often been studied from the consequences
they generate. Aims. To explore the type of relation that exists between CVA and
personality structures as a premorbid risk factor (RF), including their possible
relation to the characteristics of brain injury. Patients and methods. 97 patients
who were admitted to hospital consecutively for a first CVA were evaluated and
a follow-up was carried out on 38 of them. In the acute episode and in the
follow-up we collected data about their medical history, from studies using
neuroimaging and from a semi-structured interview which was administered to
the patient or a relative. Results. A predominance of personality traits similar to
those of 'type A personality' was found. These traits are grouped in the following
structures: moody (depressive), over-adapted, logical (obsessive) and
suspicious-distrustful (paranoid), with a clear predominance of traits of low
tolerance to frustration, irritability, lack of care for or abuse of the body,
exigency, perfectionism, rigidity, magical thought and illness understood as
being weakness or bad luck and health as a 'must be' . Depressive states, with or
without anxiety, were also found with significant frequency. None of these states
or reactions was associated to any kind of brain injury in particular, both in their
type and in their topography. Conclusions. Results show a tendency that is
similar to studies with heart patients and with patients with CVA that have
already been published and can be grouped under the denomination of 'type A
personality'. Therefore, type A personality can be considered as a factor linked to
vascular diseases involving at least two territories (heart and brain). It remains to
be ascertained whether the brain territory is only a RF or a necessary or sufficient
condition. Psychological evaluation of the subjects at risk or already affected by
a CVA is relevant and to be taken into account in both prevention and therapy
and rehabilitation
Keywords: A BEHAVIOR/acute/approach/brain/brain
injury/cerebrovascular/CVA/DEPRESSION/diseases/evaluation/health/heart/hist
ory/hospital/injury/LESIONS/LOCATION/medical/medical history/MOOD
DISORDERS/MORTALITY/personality
structure/prevention/rehabilitation/RISK/risk
factor/SPAIN/STRESS/STROKE/therapy/vascular
Gil-Nunez, A.C. (1998), Primary prevention of ischemic stroke. Revista Ecuatoriana de
Neurologia, 7 (3), 99-100
Keywords: ischemic/ischemic stroke/prevention/Spain/stroke
Guiu, J.M., Alvarez-Sabin, J. and Codina, A. (1998), A comparative study of the effect
of low doses of acetylsalicylic acid and triflusal in the prevention of
cardiovascular incidents in young adults with ischemic cerebrovascular disease.
Revista Ecuatoriana de Neurologia, 7 (1), 28-32.
Abstract: The effectiveness of the low doses AAS in the prevention of the cerebral
infarction has not been clearly still verified. Objective. To compare the long term
effectiveness of the treatment with low doses AAS in front of triflusal in the
reduction of the stroke, ischemic cardiopathy, and cardiovascular death risks.
Material and methods. Of 386 patients with a first ischemic stroke, 217 were,
selected (106 triflusal, 111 AAS) that completed the approaches of atheromatous
infarct (161 males, 72.2% and 58 female, 25.8%). The mean age was 43 years
(standard deviation, SD 6.4, 95% CL 20-50). The patients received one of these
treatments: a) AAS (Sedergine(R)) 330 mg/day (once a day); b) Triflusal
(Disgren(R)), 900 mg/day (300 mg 3 times a day). The mean time of follow-up
for the group triflusal was of 48.3 months (20- 94), while for the group AAS was
of 46.3 months (2-84). Results. The combined incidence of cerebral infarcts,
ischemic cardiopathy and vascular death was 19.8% in the patients treated with
triflusal, and 28.8% in the patients treated with AAS what supposes a reduction
of the risk of the 39% (OR 0.61; CL 0.30-2.01). In the subgroup of patients with
carotid stenoses of more than 70% demonstrated by angiography, triflusal
produces a significant reduction of risk (OR 0.30; CL 0.10-0.90). Also, triflusal
reduced in 76% the risk of hemorrhagic complications in comparison of the AAS
(OR 0.24; IC 0.06-0.94). Conclusions. The study adds new doubts about the
effectiveness of the low doses of AAS in the secondary prevention of the
cerebral infarct. The triflusal shows effectiveness in subgroup of high risk and a
significance reduction of the hemorrhagic complications that would be confirmed
in controlled clinical trials with a greater number of patients
Keywords: acetylsalicylic acid/adults/age/ASPIRIN/carotid/cerebral
infarction/cerebrovascular disease/clinical
trials/complications/incidence/infarction/ischemic
stroke/prevention/risk/secondary
prevention/STROKE/SUBGROUPS/treatment/trials/vascular
Lopez-Pousa, S., Mercadal-Dalmau, J., Marti-Cuadros, A.M., Villalta-Franch, J. and
Lozano-Gallego, M. (1998), Triflusal in the prevention of vascular dementia.
Revista Ecuatoriana de Neurologia, 7 (1), 33-37.
Abstract: Vascular dementia is the second commonest cause of dementia after
Alzheimer's disease. The most important risk factor for this is previous cerebral
vascular accident. Objective. To eliminate the risk factors and/or progression of
this illness would be of considerable benefit to these patients. Triflusal, a platelet
anti-aggregant chemically related to the salicylates, whose clinical efficacy has
been shown in cardiac and cerebrovascular pathology, has been used in the
treatment of patients with vascular dementia. Material and methods. An open
study was done a sample of 73 patients with vascular dementia randomly
distributed into two groups (control and undergoing treatment with triflusal).
Results. To check the efficacy of treatment with triflusal, the percentage of
variation in the scoring of the Cognitive Mini Examination was used after a
clinical course of 12 months (IVP 12), considering the critical point of no
efficacy to be a loss equal or greater than 10%. In the control group, 33% (8/24)
and in the group treated with triflusal 8% (3/35) had a negative course which was
greater than this critical point. Conclusions. The difference in the IVP 12
between the two groups was statistically significant (p=0.0375), with a statistical
power of 87% (beta=0,13). This gives triflusal a therapeutic activity which is
sufficient to limit cognitive deterioration of patient with vascular dementia
Keywords: ASPIRIN/CEREBRAL
BLOOD-FLOW/dementia/DIAGNOSIS/DISEASE/HOSPITALIZED
COHORT/LESIONS/MULTI-INFARCT DEMENTIA/prevention/risk/risk
factors/RISK-FACTORS/STROKE/treatment/TRIAL/vascular
de Castroviejo, E.V.R., Rubio, A.M., Sanfeliu, H.P., Cabezas, C.L., Herrera, M.G.,
Castellani, A.T. and Vilardebo, C.P. (2000), Oral anticoagulation use among
patients with nonrheumatic atrial fibrillation. Revista Espanola de Cardiologia,
53 (2), 200-204.
Abstract: Introduction. The efficacy of anticoagulant treatment in the prevention of
thromboembolic complications among patients with nonrheumatic atrial
fibrillation is established. In our country, data on the use of this therapy in
clinical practice are not available. Objective. To examine anticoagulants use
among patients with nonrheumatic atrial fibrillation and to analyze the influence
of several thromboembolic risk factors in anticoagulant use. Patients and
methods. We have studied, 302 patients retrospectively, with nonrheumatic atrial
fibrillation. We determined the presence of heart failure, hypertension, previous
thromboembolism, diabetes and left atrium dilation. We added age, sex, pattern
of non-permanent arrhymia and hospitalization and we conducted univariate and
multivariate analyses to identify their influence the establishment of the
anticoagulant treatment. Results. 28,8% of patients were treated with oral
anticoagulants. 83,7% were treated with oral anticoagulant or antiplatelet agents.
Only three patients, out of 49, aged 80 years or older were treated with
anticoagulants. Multivariate analysis showed that previous thromboembolism
(odds ratio 4.03 [1.9-8.1]), permanent atrial fibrillation (odds ratio 2.6 [1.3-5.3]),
left atrium dilation (odds ratio 2.3 [1.2-4.1]) and heart failure (odds ratio 1.9
[1.07-3.6]) were factors that predicted higher use of anticoagulant treatment.
Conclusions. a) Anticoagulant treatment is underused among patients with
nonrheumatic atrial fibrillation; b) previous thromboembolism, left atrium
dilation and heart failure have conditioned higher probability of undergoing
anticoagulant treatment, and c) patients aged 80 years and over and non
permanent atrial fibrillation predicted less use of the therapy
Keywords: age/aged/anticoagulant/anticoagulant
treatment/anticoagulants/anticoagulation/antiplatelet/antiplatelet agents/atrial
fibrillation/clinical
practice/complications/diabetes/embolism/fibrillation/heart/heart
failure/hospitalization/HOSPITALS/hypertension/left atrium/NATIONAL
PATTERNS/nonrheumatic/oral
anticoagulants/POPULATION/PREVENTION/PROPHYLAXIS/RISK/risk
factors/sex/Spain/STROKE/THERAPY/THROMBOEMBOLIC
COMPLICATIONS/thromboembolism/treatment/use/WARFARIN USE
Abadal, L.T., Puig, T. and Vintro, I.B. (2000), Incidence, mortality and risk factors for
stroke in the Manresa Study: 28 years of follow-up. Revista Espanola de
Cardiologia, 53 (1), 15-20.
Abstract: Introduction and objectives. The information concerning stroke mortality is
limited in Spain, and the information on morbidity is even scarcer similarly to
other countries. This is true also for the decrease of frequency observed in the
last decades. The objective of this paper is to provide data in the incidence,
mortality and cardiovascular risk factors associated to stroke in our surrounding
through by the prolonged observation of a working population. Material and
methods. In the Manresa Study, which began in 1968, a cohort of 1,059 men,
from 30 to 59 years old, was followed for 28 years. We recorded new ca ses of
fatal and nonfatal stroke and the relationship between stroke incidence and risk
factors of cardiovascular disease found in the initial examination. Results.
Incidence rate for stroke was 183 x 100,000 per year, 6496 of the cases were
registered after they turned 60 years of age. Mortality rate due to stroke was 88 x
100,000 per year, 91.6% of fatal cases were over 60 years old. Factors associated
to the stroke morbimortality incidence were age, high blood pressure and
overweight. In a bivariate regression model, stroke mortality was found
significantly associated to the presence of atrial fibrillation, diabetes,
hypercholesterolemia and tobacco smoking. Conclusions. Stroke frequency rates
in the Manresa cohort are ranged at a medium level compared to data from other
general population studies. The role of atrial ii brillation in the stroke
morbimortality has been confirmed. The associated factors, age, high blood
pressure and overweight, are similar role to that wich was found in other research
studies. The priorities in the cerebrovascular disease prevention in our
surroundings are discussed
Keywords: age/atrial fibrillation/ATRIAL-FIBRILLATION/blood
pressure/cardiovascular/cardiovascular disease/CARDIOVASCULAR
MORTALITY/cardiovascular risk/cardiovascular risk
factors/cerebrovascular/cerebrovascular disease/cerebrovascular
diseases/diabetes/disease/fibrillation/FRAMINGHAM/HEART-DISEASE/high
blood
pressure/hypercholesterolemia/hyperglicaemia/hypertension/incidence/men/morb
idity/mortality/obesity/population/population
studies/PREVENTION/prevention/risk/risk factors/risk factors for
stroke/SEGOVIA/smoking/SPAIN/stroke/stroke incidence/stroke
mortality/tobacco/TRANSIENT ISCHEMIC ATTACKS
Pintor, E., Sanmartin, M., Azcona, L., Hernandez, R., Fernandez-Cruz, A. and Macaya,
C. (2001), Leucocytoclastic vasculitis after ticlopidine. Revista Espanola de
Cardiologia, 54 (1), 114-116.
Abstract: In the last five years the combination of ticlopidine plus aspirin has been the
treatment of choice to avoid thrombi formation after the implantation of
intracoronary stents. The adverse effects observed include the appearance of a
maculopapulous, pruritic, painless, cutaneous rash. We present the case of a
patient who developed leucocytoclastic vasculitis associated with the
administration of ticlopidine
Keywords: administration/adverse effects/aspirin/combination/coronary
angioplasty/EFFICACY/formation/INTRACORONARY STENT
PLACEMENT/platelet aggregation
inhibitors/PREVENTION/Spain/stent/stents/STROKE/THERAPY/ticlopidine/tre
atment
de Castroviejo, E.V.R., Barranco, M.J.M., Rubio, A.M., Pineda, A.F., Cabezas, C.L.,
Herrera, M.G., Castellani, A.T., Vilardebo, C.P., Galiano, E.M. and Munoz, A.A.
(2002), Changes in the clinical profile of patients treated with oral anticoagulants
during the decade of the ninety. Revista Espanola de Cardiologia, 55 (1), 55-60.
Abstract: Introduction. During the last few years the efficacy of oral anticoagulant
treatment in the prevention of thromboembolic complications among patients
with cardiac diseases has been well established. This has determined an increase
in the number of patients undergoing this therapy and a change in the clinical
profile of these patients. Objective. To determine the number and the changes in
the clinical characteristics of patients treated with oral anticoagulants during the
last decade. Patients and method. The charts of 5,771 hospitalized patients
between January 1, 1991 and December 31, 1999, were retrospectively reviewed.
We analyzed the number of patients discharged with anticoagulant treatment, the
clinical profile and the evolution during the decade. Results. 761 (13.1%)
patients were discharged with anticoagulants. The therapy was prescribed to
7.4% of the patients from 1991-1993 and to 15.1% of the patients from
1998-1999. The mean age of the patients was 60.4 from 1991-1993 and 67.1
from 1998-1999 (p 8% year). All the studies have demonstrated the benefit of
a primary or secondary prevention by antivitamin K with an INR between 2 and
3 (reduction of the relative risk of about 68%). Conversely, the efficacy of
aspirin has not been proven in this population of elderly patients. Once stroke has
occurred, it is not recommended to initiate an anticoagulation (unfractioned or
low molecular weight heparin) within the first hours. Prevention of venous
thrombosis remains necessary. Future prospects and projects. - Currently, less
than 30% of the patients older than 75 years are given anticoagulation, the risk of
the treatment being probably overestimated. The risk benefit ratio should be
evaluated more properly for a given patient. (C) 2002 Editions scientifiques et
medicales Elsevier SAS. All rights reserved
Keywords: acute/anticoagulant/anticoagulant
therapy/anticoagulation/ANTITHROMBOTIC THERAPY/antivitamin
K/aspirin/ASSOCIATION/atrial
fibrillation/CARDIOVERSION/COMPLICATIONS/elderly/ELDERLY
PATIENTS/fibrillation/heparin/high risk/INR/ischemic/ischemic
stroke/knowledge/low molecular weight heparin/OLDER PATIENTS/permanent
atrial fibrillation/POPULATION/prevention/primary/primary and secondary
prevention/RANDOMIZED TRIAL/relative risk/risk/secondary/secondary
prevention/stroke/STROKE PREVENTION/therapy/thrombosis/treatment/under
utilisation of oral anticoagulants/venous thrombosis/WARFARIN/weight
Leclerc, J.R. (1999), Strategies for the prevention of pulmonary embolus for patients at
risk during surgical operations and also in the medical environment. Revue des
Maladies Respiratoires, 16 (5BIS), 939-948.
Abstract: Pulmonary embolus is a significant aspect of thromboembolic venous disease
which globally is the third most important cardiovascular disorder. There are
several methods of primary prevention to decrease morbidity and mortality
related to this disease. This article consists of a review of the most current
methods of prophylaxis followed by practical recommendations for surgical,
medical and obstetric patients
Keywords: ACUTE ISCHEMIC STROKE/DEEP-VEIN
THROMBOSIS/DOUBLE-BLIND TRIAL/embolus/INDUCED
THROMBOCYTOPENIA/LOW- DOSE HEPARIN/MOLECULAR-WEIGHT
HEPARIN/morbidity/mortality/prevention/primary
prevention/prophylaxis/review article/risk/SUBCUTANEOUS
HEPARIN/TOTAL HIP- REPLACEMENT/UNFRACTIONATED
HEPARIN/venous thromboembolism/VENOUS THROMBOEMBOLISM
Koudstaal, P.J. (1999), Anticoagulant treatment in stroke prevention. Revue
Neurologique, 155 (9), 694-696.
Abstract: This review aims to summarise the value of long-term oral anticoagulant
treatment in stroke prevention. Oral anticoagulation is the treatment of first
choice in patients with atrial fibrillation (AF) and vascular risk factors and in AF
patients with recent cerebral ischemia. The treatment also substantially reduces
the risk of stroke in patients after myocardial infarction. The optimal target
intensity of anticoagulation in stroke prevention is an international Normalized
Ratio (INR) between 2.0 and 3.0. The treatment has been found to be hazardous
at INR intensities between 3.0 and 4.5 in patients with transient ischemic attack
(RA) or minor stroke of presumed arterial origin. The value of the treatment in
lower intensity in such patients still has to be established
Keywords: AF/anticoagulant/anticoagulant treatment/anticoagulation/atrial
fibrillation/cerebral/cerebral
ischemia/fibrillation/infarction/INR/ischemia/ischemic/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/Netherlands/NONRHEUMATIC
ATRIAL-FIBRILLATION/prevention/review/RISK/risk factors/stroke/stroke
prevention/transient/transient ischemic attack/treatment/vascular
Crassard, I. and Bousser, M.G. (1999), Antiplatelet drugs for stroke prevention. Revue
Neurologique, 155 (8), 531-541.
Abstract: Antiplatelet (AP) drugs play a major role in stroke prevention. Aspirin
(50-1300 mg), ticlopidine (500 mg), clopidogrel (75 mg) and dipyridamole (400
mg) are effective in secondary prevention of atherothrombotic brain infarcts.
Aspirin has been the most extensively studied drug and remains the most
cost-effective one. The optimal dose is still debated; doses between 100 and 300
mg are the most widely used. The preventive efficacy of aspirin is already
present at the acute phase of cerebral infarct. In primary prevention, aspirin
nearly halves the risk of myocardial infarction but does not reduce that of stroke.
Cardiac diseases with a high embolic risk require the use of oral anticoagulation.
In non valvular atrial fibrillation, the choice of antithrombotic drugs depends on
risk stratification: oral anticoagulants are indicated in high risk subjects whereas
aspirin is recommended in low risk subjects and when oral anticoagulants are
contraindicated. Studies with new associations of AP and with new drugs are
required to increase the yield of the antiplatelet approach in high risk subjects,
this should be done in parallel with efforts to detect and to treat the vascular risk
factors associated with the development of a mass approach for stroke primary
prevention
Keywords: acute/anticoagulants/anticoagulation/antithrombotic/aspirin/atrial
fibrillation/brain/cerebral/clopidogrel/development/DIPYRIDAMOLE/DISEAS
E/diseases/drugs/fibrillation/HOMOCYSTEINE/infarction/LOW-DOSE
ASPIRIN/myocardial/myocardial infarction/NONRHEUMATIC
ATRIAL-FIBRILLATION/oral anticoagulants/oral
anticoagulation/prevention/primary prevention/RANDOMIZED
TRIAL/RISK/risk factors/risk stratification/SECONDARY
PREVENTION/stroke/stroke prevention/TICLOPIDINE/vascular/WARFARIN
Dimitrijevic, J., Gavranovic, M., Dzirlo, K., Bratic, M., Hrnjica, M., Bulic, G. and Hebib,
L.J. (1999), Stroke in Sarajevo during the war. Revue Neurologique, 155 (5),
359-364.
Abstract: Purpose: Neurologists in the main hospital in Sarajevo (Bosnia- Herzegovinia),
we worked in the neurological department throughout the war and the siege of
the town, from 1992/4/6 to 1995/12/15 We report on strokes which happened
during that period, comparing stroke incidence and severity in relation to those
two years before. We reviewed 3002 cases of stroke recorded in the neurological
department registry from 01/01/90 to the end of the war. Results: The activity of
the department was reduced by about 40 p. 100, as was the population of the
town. Yet the number of strokes decreased only by 26.5 p. 100. The comparative
incidence of strokes increased by 25 p. 100 during the war. Sex ratio and age
incidence were the same. The relative role of atherosclerosis, cardiac embolic
sources, intracranial and meningeal hemorrhage remained the same. The
incidence of intracranial hemorrhage increased by 20 p. 100. Death, evaluated
after one month, increased by 36 P. 100 Death by intracranial hemorrhage
increased by 30 p. 100 those by cardiac embolic infarction by 26 p. 100 and
those by atherosclerosis by 20 p. 100. At the end of the first year of the war,
mortality was 65p. 100 in comparison with the previous year and death by
meningeal hemorrhage increased by 74 p. 100 for the first two years of the war.
The major changes in life conditions have produced change in medical
conditions. Patients had to stop their treatment because there was no more
medecine in the city, and, among others, no more drugs for anticoagulation,
diabetes mellitus, cardiopathy... In the hospital, medical doctors, nurses, drugs,
food and even heating were missing. So stopping the treatment for vascular
disease together with the high level of stress generated by daily shelling can
explain the increase in stroke incidence and especially, the hemorragic cases. The
poor life conditions which weakened people and the lack of treatment at the
acute stage of the disease and also later, when secondary events occurred, can
explain the high mortality observed Conclusion: we recognize the bias of our
study: the war itself, the condition which we have carried out this work and the
use of a hospital registry. Nevertheless, it seems that morbidity not directly due
to the battle can change during a war like this one. This study also demonstrates,
"a contrario", that preventive treatment and care of stroke at the acute phase, as
they are currently recommended, are useful
Keywords: 1ST STROKE/acute/ACUTE
CEREBROVASCULAR-DISEASE/age/anticoagulation/atherosclerosis/COMM
UNITY/CONSECUTIVE PATIENTS/diabetes/diabetes
mellitus/drugs/EPIDEMIOLOGY/HEART-DISEASE/hemorrhage/hospital/incid
ence/INFARCTION/INTRACEREBRAL HEMORRHAGE/intracranial
hemorrhage/morbidity/mortality/population/PREVENTION/SCORE/severity/str
ess/stroke/stroke incidence/treatment/vascular/vascular disease
Chatellier, G., Colombet, I. and Dreau, H. (1999), Hypertension and stroke: the need for
improved prevention strategies. Revue Neurologique, 155 (9), 670-676.
Abstract: It is well demonstrated that the antihypertensive treatment is effective,
particularly for the primary prevention of stroke. However, benefits of treatment
are rather small in certain groups of patients. The explicit assessment of absolute
cardiovascular risks and likely treatment benefits in patients with hypertension
can usefully guide treatment decisions and provide a more rational basis for
initiating therapy than blood pressure levels alone. This approach highlights the
generally greater cardiovascular risk and potential treatment benefits in older
compared with younger hypertensive patients. Some specific questions remain
still unanswered. Evidence is accumulating concerning protective effect of
antihypertensive treatment against dementia. Trials are in progress to investigate
the effect of treatment on stroke incidence in hypertensive patients over the age
of 80 years. Finally, despite the worldwide use of calcium antagonists and
converting enzyme inhibitors, solid evidence of their safety and efficacy
compared with the references drugs (beta-blockers and diuretics) is still lacking
Keywords: age/ANTIHYPERTENSIVE
TREATMENT/ARTERIAL-HYPERTENSION/beta-blockers/blood
pressure/calcium/calcium
antagonists/calcium-antagonists/cardiovascular/CARDIOVASCULAR-DISEAS
E/CORONARY
HEART-DISEASE/dementia/drugs/GENERAL-PRACTICE/HIGH
BLOOD-PRESSURE/hypertension/incidence/POPULATION/PREVALENCE/p
revention/primary prevention/risk/safety/stroke/stroke incidence/SYSTOLIC
HYPERTENSION/therapy/treatment/TRIAL
Leys, D. (1999), Prevention of cerebral ischaemia: antiplatelet agents. Revue
Neurologique, 155 (9), 688-693.
Abstract: Besides the optimal management of risk factors for stroke and carotid surgery,
antiplatelet agents are the cornerstone for prevention of cerebral ischaemia. The
aim of this overview is to determine their role in the prevention of cerebral
ischaemia, from available literature. in primary prevention, the benefit of aspirin
has been established only for patients with non-valvular atrial fibrillation and a
low risk of cardioembolism, or as an alternative choice of warfarin, and in
subjects at highrisk of atherosclerosis. In secondary prevention, antiplatelet
agents are effective to reduce the risk in patients with ischaemic stroke due to
atherosclerosis: aspirin (50 to 1300 mg), ticlopidine (500 mg), clopidogrel (75
mg) and dipyridamole (400 mg) are effective, but the higher levels of risk
reduction are obtained with clopidogrel, ticlopidine and the association aspirin -
dipyridamole. Aspirin is recommended in most other causes of cerebral
ischaemia, except in high risk cardiopathies when anticoagulation is possible.
Other domains should still be explored: are antiplatelet agents also effective to
reduce the risk of cerebral ischaemia in patients with other causes, especially
lipohyalinosis of the deep perforators leading to lacunar infarcts? In daily
practice, does prescription follow recommendations? Will it be possible to
reproduce the results of the European Stroke Prevention Study (ESPS) 2? Are
antiplatelet agents other than aspirin effective in non- valvular atrial fibrillation?
Are other associations of antiplatelet agents more effective than these agents
alone? Finally, what will be the role of new antiplatelet agents in the future?
Keywords: anticoagulation/antiplatelet agents/ASPIRIN/atherosclerosis/atrial
fibrillation/carotid/cerebral/cerebral
ischaemia/clopidogrel/COST-EFFECTIVENESS/DIPYRIDAMOLE/fibrillation/
FRAMINGHAM/ischaemia/ischaemic stroke/non-valvular atrial
fibrillation/NONRHEUMATIC ATRIAL-FIBRILLATION/prevention/primary
prevention/RANDOMIZED TRIAL/RISK/risk factors/risk factors for
stroke/SECONDARY PREVENTION/stroke/STROKE
PREVENTION/surgery/ticlopidine/WARFARIN
Niclot, P. and Bousser, M.G. (1999), Anti-platelet and anti-coagulant therapy for acute
cerebral events. Revue Neurologique, 155 (9), 656-661.
Abstract: Therapeutical trials in the acute phase of stroke have showed a moderate
benefit of administration of aspirin in prevention of death or recurrent cerebral
events. This benefit was obtained despite a small increase in systemic and
cerebral haemorrhages. Heparin used at high dosage, without any control of
coagulation test, induces an excess of cerebral and systemic haemorhage which
overset its benefit in prevention of recurrent cerebral events. Similar results have
been observed with heparinoid and nadroparine used at high dosage. The only
benefit of anticoagulation is the prevention of total and fatal pulmonary
embolism which has been observed in all recent studies. The anti-thrombotic
treatment which offers the best ratio benefit- risk in the acute phase of stroke is
aspirin at a minimum dosage of 160 mg by day and, if risk factors are present,
heparin at an adequate dosage to prevent-venous thrombo- embolism.
Explicative studies are required to explore the potential benefit of heparin in
patients with a high risk of recurrent cerebral ischemic events
Keywords: acute/ACUTE ISCHEMIC
STROKE/administration/anticoagulant/anticoagulation/antithrombotic/ASPIRIN
/cerebral/coagulation/control/embolism/HEPARIN/ischemic/PREVENTION/pul
monary embolism/RANDOMIZED TRIAL/risk/risk
factors/stroke/therapy/treatment/trials
Gallucci, M. (1997), Perfusional MR in ischemic stroke. Rivista di Neuroradiologia,
10 99-101.
Abstract: The main application of perfusional techniques based on MR concerns the
evaluation of stroke. Our experience, based on 25 cases (15 acute) confirms the
literature data, allowing to affirm its simplicity (2 minutes of acquisition,
obtainable also with low field equipments). In perspective it is possible to foresee
an increasing employment that, in case of stroke, could: 1. facilitate the
differential diagnosis; 2. allow the early recognition of the ischemic area (in the
first minutes after the occlusion); 3. facilitate the prognostic judgment; 4. help in
differentiating the ischemic core from penumbra; 5. replace SPET in the
evaluation of the so-called therapeutic window; 6. allow the correct selection of
pts susceptible of thrombolitic therapy, excluding those with spontaneous
recanalization; 7. appraise the effectiveness of thrombolitic therapy in follow-up
evaluations. To our opinion, however, much more interesting seems the possible
application in prevention, and more particularily, in: 1. evaluation of critical
zones in subjects with stenosis of big vessels; 2. study of the efficiency of
collateral supply; 3. evaluation of the vasodilatory reserve (i.e.: pharmacological
tests); 4. presurgical planning (perfusional MR together with MRA will replace
caterer angiography?)
Keywords: brain ischemia/brain perfusion/diagnosis/evaluation/ischemic/ischemic
stroke/MRI/penumbra/perfusion studies/prevention/recanalization/stroke/therapy
Houdart, E. (2003), Current role of angioplasty of the intracranial arteries. Rivista di
Neuroradiologia, 16 (1), 105-109.
Abstract: This paper presents our indications for angioplasty of intracranial stenoses in
secondary prevention of stroke. This technique was first implemented at our
institution in 1993. Inclusion criteria are very strict: severe stenoses located on
large arteries, symptomatic despite antithrombotic therapy. Thirty patients have
been successfully treated to date. Twenty- seven patients are free of symptoms
with a mean follow-up of four years. Neurological complications occurred in two
patients. One patient developed an early symptomatic restenosis. Intracranial
angioplasty is feasible and efficient for stroke prevention but inclusion criteria
should remain strict
Keywords: angioplasty/antithrombotic/antithrombotic
therapy/arteries/carotid/complications/DISEASE/intracranial/prevention/restenos
is/secondary/secondary prevention/stenosis/stent/stroke/stroke
prevention/symptoms/therapy
Scienza, R. and Pavesi, G. (2003), Surgical treatment of intracranial aneurysms. Rivista
di Neuroradiologia, 16 (1), 149-156.
Abstract: Cerebrovascular disease continues to be a major source of morbidity and
mortality in our aging population. Cerebrovascular disease continues to present
challenges in the diagnostic and therapeutic arena. Prevention and treatment of
stroke represent an unconquered frontier in clinical neuroscience. The ability to
identify and treat cerebrovascular abnormalities before permanent ischemic
deficit occurs is rapidly increasing. Endovascular therapy of vascular
malformations and vasospasm are today a necessary comparison with
microsurgery; cerebral blood flow measurements tool give clinicians the
opportunity to identify patients at risk for ischemic damage and to suggest new
therapeutic paths; minimally invasive diagnostic tools are gradually reducing the
indication for cerebral angiography. Such major advances in technology, that are
actually changing our therapeutic approach to cerebrovascular disease, and to
cerebral aneurysms treatment, will soon result in safer more effective treatments,
minimizing the onset of permanent neurologic deficits. Anyway, it is a fact that
the majority of cerebral aneurysms are still treated by, microsurgery, either
because of the wider diffusion of specialized centers offering this technique, or
because of the longer follow up on the obtained results achieved by
neurosurgeons. The object of the present study is to show how the surgical
treatment of cerebral aneurysms is organized, and which are the main problems
that neurosurgeons are facing in the effort to conjugate microsurgical treatment
with the new ancillary technologies for the study of cerebrovascular
malformations
Keywords: aging/aneurysm/angiography/blood flow/cerebral/cerebral
angiography/cerebral blood flow/cerebrovascular/cerebrovascular
disease/clipping/COMPLICATIONS/diagnostic/disease/intracranial/ischemic/M
ANAGEMENT/microsurgery/morbidity/morbidity and
mortality/mortality/population/results/risk/SAH/stroke/SUBARACHNOID
HEMORRHAGE/SURGERY/surgical
treatment/therapy/treatment/vascular/vasospasm
Inzitari, D. (2003), Carotid artery atherosclerotic disease - Medical therapy and clinical
trials. Rivista di Neuroradiologia, 16 (1), 27-30.
Abstract: Carotid endarterectomy represents one of the main strategies for primary and
secondary prevention of atherothrombotic ischemic stroke. ECST and NASCET
studies on symptomatic carotid stenosis showed a significantly higher benefit of
surgical compared to medical therapy to reduce the risk of ischemic stroke in
case of severe stenosis, (over 70% in NASCET study and over 85% in ECST
study) with a Number Needed to Treat, NNT, at 2 years of 8. For moderate
stenosis (50-69% in the NASCET study) there was a smaller benefit (NNT = 20),
while there was no benefit for stenosis 75% (331; 68.5%), ulceration (41;
8.5%), bilateral stenosis (61; 12.5%) and unilateral stenosis with contralateral
occlusion (51; 10.5%). Intraluminal shunt was used in nearly all patients whereas
special management of cerebral metabolism (intraoperative
electroencephalogram, somatosensory evoked potentials) were used in high-risk
patients only. Overall early mortality was 1.8%. Three patients died from the
sequelae of a neurologic injury, whereas six patients died from myocardial
infarction or intractable arrhythmia. Mortality decreased from 2.4% between
1978 and 1984 to 0.8% between 1985 and 1991. At 6 and 8 years, actuarial
survival rates of 88.1% and 76.1% and stroke-free survival rates of 86% and
81.5% were observed. Late mortality was essentially due to ischemic cardiac
complications (38.5% of the actuarial late mortality at 8 years). Review of the
literature shows that carotid endarterectomy is the treatment of choice for
symptomatic high-grade extracranial carotid stenosis in patients who are not
high-risk candidates. Asymptomatic hemodynamically significant (>70%)
carotid stenosis poses special clinical problems in patients scheduled for major
surgery; in cardiovascular surgery there may be an increased risk of stroke in
patients with tight stenosis (>90%) or occlusion of the carotid artery; in this
special group of patients simultaneous cardiac and carotid surgery should be
considered a valuable alternative. Our results show that carotid endarterectomy
can be performed with acceptable mortality and morbidity even in a teaching
hospital. Early postoperative use of antiplatelets and accurate surgical technique
are important factors in the prevention of postoperative embolism and
thrombosis
Keywords:
ARTERY/CLOSURE/COMPLICATIONS/MANAGEMENT/PROGNOSIS/TIG
HT STENOSIS/VEIN PATCH
Reinhart, W.H. (1993), Stroke. Schweizerische Medizinische Wochenschrift, 123 (16),
775-782.
Abstract: Stroke is an ischemic event in 80% and hemorrhagic in 20%, which can be
distinguished by computed tomography of the brain. Unfortunately, no routinely
applicable therapy is available for stroke. Several thrombolysis studies are
underway and their results will become available in the next few years.
Hemodilution has been abandoned except for hematocrits above 50%. Calcium
antagonists such as nimodipine reduce vascular spasms after subarachnoidal
hemorrhage, but their administration after ischemic stroke is unsuccessful. A
new experimental approach is offered by glutamate receptor antagonists, which
may prevent cell damage induced by the excitatory amino acid glutamate. In the
case of cardio-embolic stroke, heparin should be started after 48 hours.
Hypertension should only be treated above values of 200/120 mm Hg, with
short-acting intravenous drugs. Because of the limited therapeutic options for
completed stroke, primary prevention (treatment of hypertension, anticoagulation
for atrial fibrillation) and secondary prevention after transitory ischemic attacks
(endarterectomy for carotid stenosis >70%, aspirin) should be intensified
Keywords:
ANGIOGRAPHY/ATRIAL-FIBRILLATION/BLOOD-PRESSURE/CAROTID
ENDARTERECTOMY/CEREBRAL- ISCHEMIA/CONTROLLED
TRIAL/CORONARY HEART-DISEASE/EPIDEMIOLOGIC
ASSESSMENT/HEMORRHAGE/PATENT FORAMEN OVALE
Stahelin, H.B., Evison, J. and Seiler, W.O. (1994), Prevention of Cerebrovascular
Infarction. Schweizerische Medizinische Wochenschrift, 124 (45), 1995-2004.
Abstract: Cerebrovascular infarction is the third leading cause of mortality following
coronary heart disease and malignancies. WHO studies show that more than half
of patients admitted for cerebrovascular infarction were not treated for
hypertension. The risk factors for coronary heart disease and cerebrovascular
infarction are not identical. Patients with systolic and diastolic hypertension,
atrial fibrillation, stenosis of the carotid artery, and smoking, have a significantly
elevated risk for cerebrovascular accidents. Hypercholesterolemia and diabetes
are less important risk factors. Risk factors amendable by adequate nutritional
intake are low supply of carotene and vitamin C. Homocysteinemia appears to be
a risk factor that may be influenced by appropriate nutrition. Antihypertensive
therapy is the most important primary and secondary preventive measure. No
smoking and adequate dietary intake are also important. Primary prevention with
low dose salicyclic acid (ASA) is recommended in the presence of additional
cardiovascular risk factors. The benefit of low dose anticoagulant therapy in
atrial fibrillation without symptoms is not fully established. In subjects with
atrial fibrillation with cerebrovascular events anticoagulants are superior to ASA.
Surgical treatment of significant stenosis of the carotid artery is indicated. In
secondary prevention of thromboembolic events, low dose ASA is recommended.
A valuable alternative in case of side effects is available in ticlopidine
Keywords: ALCOHOL-CONSUMPTION/anticoagulants/atrial
fibrillation/ATRIAL-FIBRILLATION/BLOOD-PRESSURE/cardiovascular risk
factors/carotid/coronary heart disease/CORONARY
HEART-DISEASE/fibrillation/heart/hypertension/ISCHEMIC
STROKE/mortality/MYOCARDIAL-
INFARCTION/nutrition/prevention/risk/RISK FACTOR/risk factors/secondary
prevention/SERUM-CHOLESTEROL/smoking/ticlopidine/TICLOPIDINE
ASPIRIN STROKE/treatment/UNITED-STATES/vitamin C
Zimmermann, M. (1994), Anticoagulation in Atrial-Fibrillation - for and Against.
Schweizerische Medizinische Wochenschrift, 124 (35), 1560-1565.
Abstract: Atrial fibrillation is a common arrhythmia, and the risk of embolic stroke in
patients with nonrheumatic atrial fibrillation is increased about fivefold. Until
recently, there has been no consensus on the use of anticoagulants in patients
with nonrheumatic atrial fibrillation, and the role of aspirin has been
controversial. Since 1989, 5 randomized, controlled trials have been published
comparing warfarin or aspirin with placebo for primary prevention of stroke in
patients with nonrheumatic atrial fibrillation. All these trials have shown a clear
benefit of anticoagulant therapy (risk reduction 35 to 86%), whereas the benefit
of aspirin has been less obvious (risk reduction 15 to 42%). In all these studies,
anticoagulation level was moderate (INR 1.5 to 3.0), and the rate of major
bleeding was reported to be low (0.8 to 2.5% per year). Anticoagulant therapy
does not seem to be warranted in patients 75 years old in
whom the risk of major bleeding is high. In these situations, aspirin (325 mg per
day) appears to be a safe and reasonable native
Keywords: anticoagulants/anticoagulation/aspirin/atrial
fibrillation/consensus/fibrillation/PREVENTION/primary
prevention/risk/STROKE/trials/WARFARIN
Lyrer, P. (1994), New Treatment Concepts for Acute Cerebral-Ischemia. Schweizerische
Medizinische Wochenschrift, 124 (45), 2005-2012.
Abstract: Up to the present, treatment strategies for acute cerebral ischemia have not
shown scientifically proven efficacy. Based upon new knowledge on stroke
pathogenesis and experimental data, new concepts of cerebral ischemia treatment
are being clinically tested. The main therapeutic instrument is clot lysis by
systemic or local application of thrombolytic drugs or the use of cytoprotective
agents. For both treatment strategies clinical trials to show efficacy are ongoing
or planned. Early reperfusion can be obtained by fibrinolysis, but its clinical
usefulness has yet to be proven
Keywords: ARTERY/CAROTID TERRITORY/cerebral ischemia/clinical
trials/CONTROLLED TRIAL/EMBOLIC
STROKE/ischemia/knowledge/LOCAL INTRAARTERIAL
FIBRINOLYSIS/OCCLUSION/PREVENTION/stroke/THROMBOLYTIC
THERAPY/TISSUE-PLASMINOGEN-ACTIVATOR/treatment/trials/URGENT
THERAPY
MacMahon, S., Neal, B. and Rodgers, A. (1995), Blood pressure lowering for the
primary and secondary prevention of coronary and cerebrovascular disease.
Schweizerische Medizinische Wochenschrift, 125 (51-52), 2479-2486.
Abstract: An overview of the 17 completed randomised trials of antihypertensive
treatment demonstrates that a 5-6 mm Hg reduction in DBP reduced stroke risk
by 38 % (SD 4) and CHD risk by 16% (SD 4). These results indicate that a few
years' treatment with diuretic- or beta- blocker-based therapy produces most or
all of the long-term stroke avoidance and much of the long-term CHD avoidance
that would be predicted from observational epidemiological studies, given the
blood pressure reductions that were achieved in the trials. The relative risk
reductions were similar in trials of older and younger patients, although the
absolute reduction in events was more than twice as great in the trials in older
patients. From these results it can be estimated that in fully compliant patients at
similar risk of vascular disease to those included in the trials, antihypertensive
treatment for 5 years would prevent one major vascular event among every 20
older patients and one major vascular event among every 60 younger patients.
Obviously the benefits of treatment will be greater among those at higher risk
than the patients included in the previous trials. The greatest benefits are likely to
be achieved in those with a history of vascular disease since their risk of future
events is particularly high. Among such patients it is possible that blood pressure
reduction will confer worthwhile benefits in those without hypertension, as well
as those with hypertension. It is also possible that the benefits of treatment will
be determined by the size of the blood pressure reduction and by the choice of
the antihypertensive agent. However, each of these possibilities requires
confirmation in large scale randomised controlled trials
Keywords: antihypertensive treatment/blood pressure/cerebrovascular
disease/CHOLESTEROL/EPIDEMIOLOGIC
CONTEXT/HEART-DISEASE/history/HYPERTENSION/J-CURVE
PHENOMENON/MORTALITY/MYOCARDIAL-INFARCTION/prevention/rel
ative risk/risk/secondary
prevention/STROKE/treatment/TRIAL/TRIALS/UNSTABLE
ANGINA/vascular/vascular disease
Luscher, T.F. (1995), Hypertension and Vascular-Disease - Molecular and Cellular
Mechanisms. Schweizerische Medizinische Wochenschrift, 125 (7), 270-282.
Abstract: Increased blood pressure can be observed in about 15-20% of the Swiss
population. Hypertension causes few or no symptoms, but is an important risk
factor for myocardial infarction, stroke, renal failure and peripheral vascular
disease. All these clinical complications of hypertension are preceded by
functional changes of blood vessels and the myocardium (left ventricular
hypertrophy). In conduit arteries, hypertension is associated with atherosclerotic
changes, while in resistance arteries only increased medial thickness can be
observed. In atherosclerosis, functional changes of the endothelium, vascular
smooth muscle, platelets and monocytes occur. These changes lead to
hypercontractility, increased interaction of circulating blood cells with the blood
vessel wall, and to proliferation and migration of vascular smooth muscle cells.
These events impair local blood flow and eventually may cause vascular
occlusion. The endothelium plays a particularly important role as a regulator of
these mechanisms. Accordingly, it is likely that an endothelial dysfunction
occurs at the very beginning of the athersclerotic process. In resistance arteries,
remodeling of vascular smooth muscle cells leads to thickening of the media
with encroachment on the lumen due to an increased media lumen ratio. These
hypertension-induced vascular changes are in part reversible by antihypertensive
drugs. Hypertension-induced vascular disease is preceded by numerous
alterations in the expression, secretion and action of mediators and receptors of
endothelial cells, vascular smooth muscle, platelets and monocytes. It is hoped
that increased understanding of the cellular/ molecular mechanisms of
hypertensive vascular disease will allow more effective therapy (and in the future
also gene therapy) as well as better prevention of coronary artery disease in
hypertensive patients
Keywords: atherosclerosis/blood pressure/BLOOD-PRESSURE/CEREBRAL
ARTERIOLES/complications/CORONARY
HEART-DISEASE/endothelium/ENDOTHELIUM-DEPENDENT
CONTRACTIONS/hypertension/hypertrophy/L-ARGININE/MESSENGER-RN
A/muscle/myocardial infarction/NITRIC-OXIDE
SYNTHASE/platelets/prevention/receptors/RELAXING
FACTOR/RESISTANCE ARTERIES/risk/smooth/SMOOTH-MUSCLE
CELLS/stroke/vascular/vascular disease
Mattle, H.P. (1997), Recent advances in treatment and prevention of stroke.
Schweizerische Medizinische Wochenschrift, 127 (40), 1663-1666.
Abstract: In the acute stage of stroke, fibrinolytics are beneficial for up to 3, and in some
patients up to 6, hours. If fibrinolytics are contraindicated, aspirin should be
given. Heparin is dangerous due to the threat of intra-and extracranial
hemorrhage. For secondary prevention, antiplatelet agents and, in selected
patients, anticoagulants are indicated. When hypercholesterolemia is present,
statins should be given
Keywords: ACUTE ISCHEMIC STROKE/anticoagulants/antiplatelet
agents/aspirin/EVENTS/hemorrhage/hypercholesterolemia/PRAVASTATIN/pre
vention/secondary prevention/statins/stroke/treatment
Mattle, H.P., Vella, E.E., Bassetti, C. and Sandercock, P. (1999), International Stroke
Trial Switzerland: some epidemiological data. Schweizerische Medizinische
Wochenschrift, 129 (50), 1964-1969.
Abstract: Randomised trials provide the best evidence on the effects of treatment on a
particular disease. They can also provide valuable data on outcome. In the
present article, data from 1631 Swiss patients randomised in the International
Stroke Trial (IST) are presented. Baseline characteristics and outcome in the
Swiss patients were compared with the 17 804 patients randomised in other
countries. On average, compared with other countries, Swiss patients were: 2.5
years older (CI: 1.9-3.1; p 10 was found in 62.5% of subjects and 12.5% of
controls. Between patients and controls there was a significant difference in AHI
(mean [range]: 28 (0-140) vs 5 (0-24), p 0.8). The
following measures were found to differ with speed (data format: measure at 1.3
m/s+/-SD measure at 2.2 m/s+/-SD): minimum shoulder abduction angle during
propulsion (34.5 degrees+/-6.7, 21.6 degrees+/-7.2), range of motion during the
entire stroke in elbow flexion/extension (54.0 degrees+/-9.9, 58.1 degrees+/-10.4)
and shoulder sagittal flexion/extension (74.8 degrees+/-9.4, 82.6 degrees+/-8.5),
and peak acceleration in shoulder sagittal flexion/extension (4044 degrees/s(2)+/-
946, 7146 degrees/s(2)+/-1705), abduction/adduction (2678 degrees/s(2)+/-767,
4928 degrees/s(2)+/-1311), and elbow flexion/extension (9355
degrees/s(2)+/-4120, 12889 degrees/s(2)+/-5572). This study described the
motion occurring at the shoulder and elbow using a local coordinate system.
Stable parameters that characterize the propulsive stroke and differed with speed
were found. In the future these same parameters may provide insight into the
cause and prevention of shoulder and elbow injuries in manual wheelchair
Keywords: 3-DIMENSIONAL
KINEMATICS/BIOMECHANICS/elbow/ENGLAND/motion/prevention/range
of motion/shoulder/SPINAL CORD/stroke/UPPER
EXTREMITY/wheelchair/wheelchair propulsion
Binkley, H.M. and Williams, L.C. (2003), Emergency procedures for the strength and
conditioning coach. Strength and Conditioning Journal, 25 (1), 7-18
Keywords: ACCLIMATION/asthma/athlete collapse/cold
illness/diabetes/EXERCISE-INDUCED ASTHMA/FIELD/heat illness/HEAT
ILLNESS/management/prevention/recognition/RESPONSES/STRATEGIES/ST
RENGTH/STROKE/USA
Leonberg, S.C. and Elliott, F.A. (1981), Prevention of Recurrent Stroke. Stroke, 12 (6),
731-735
Keywords: HEART/STROKE
Sorensen, P.S., Pedersen, H., Marquardsen, J., Petersson, H., Heltberg, A., Simonsen, N.,
Munck, O. and Andersen, L.A. (1983), Acetylsalicylic-Acid in the Prevention of
Stroke in Patients with Reversible Cerebral Ischemic Attacks - A Danish
Cooperative Study. Stroke, 14 (1), 15-22
Keywords: HEART/STROKE
Taylor, D.W., Sackett, D.L. and Haynes, R.B. (1984), Sample-Size for Randomized
Trials in Stroke Prevention - How Many Patients do We Need. Stroke, 15 (6),
968-971
Keywords: HEART/STROKE
Gent, M., Blakely, J.A., Hachinski, V., Roberts, R.S., Barnett, H.J.M., Bayer, N.H.,
Carruthers, S.G., Collins, S.M., Gawel, M.G., Girouxklimek, M., Hopkins, M.,
Jain, P., Lamy, M., Meloche, J.P., Saerens, E., Sicurella, J. and Turpie, A.G.G.
(1985), A Secondary Prevention, Randomized Trial of Suloctidil in Patients with
A Recent History of Thromboembolic Stroke. Stroke, 16 (3), 416-424
Keywords: HEART/STROKE
Kelley, R.E., Vibulsresth, S., Bell, L. and Duncan, R.C. (1987), Evaluation of Kinetic
Therapy in the Prevention of Complications of Prolonged Bed Rest Secondary to
Stroke. Stroke, 18 (3), 638-642
Keywords: HEART/STROKE
Sze, P.C., Reitman, D., Pincus, M.M., Sacks, H.S. and Chalmers, T.C. (1988),
Antiplatelet Agents in the Secondary Prevention of Stroke - Meta-Analysis of the
Randomized Control Trials. Stroke, 19 (4), 436-442
Keywords: HEART/STROKE/TRIAL/TRIALS
Futrell, N. and Millikan, C. (1989), Frequency, Etiology, and Prevention of Stroke in
Patients with Systemic Lupus-Erythematosus. Stroke, 20 (5), 583-591
Keywords: HEART/STROKE
Hermsmeyer, K., Hatton, D.A., Karanja, N. and Mccarron, D. (1990), Effects of Dietary
Calcium on Nimodipine-Sensitive Calcium- Channel Function in Stroke-Prone
Spontaneously Hypertensive Rats. Stroke, 21 (12), 98-101.
Abstract: We studied the effects of dietary Ca2+ on blood pressure, survival, and
calcium channel function to investigate cardiovascular disease mechanisms in
stroke-prone spontaneously hypertensive rats. Beginning at 3 weeks of age, rats
were fed high sodium chloride diets (8.0%) in combination with either high
(2.0%) or low (0.2%) Ca2+ group diets for 8 weeks. At 12 weeks of age, survival
was 90% in the high Ca2+ group and 30% in the low Ca2+ group. The higher
blood pressure and lower survival in the low Ca2+ group suggest an
intensification of altered vascular muscle cell mechanisms by a dietary Ca2+
deficit. Nimodipine (1-10 nM) effectively blocked L-type Ca2+ currents in
isolated vascular muscle cells from both groups. Contraction of isolated cells that
were not patch clamped to high potassium solutions were also blocked by 1 nM
nimodipine. Disappearance of the L-type Ca2+ channel current was accelerated
by holding at depolarizing potentials (positive to -50 mV) and by depolarizing
steps to 0 mV. Nimodipine block of the L-type Ca2+ currents in vascular muscle
is believed to contribute substantially to antihypertensive properties and stroke
prevention, actions that may develop fully only in stroke-prone spontaneously
hypertensive rats on a diet of at least normal Ca2+
Keywords: CALCIUM/CALCIUM CHANNELS/HEART/HYPERTENSION/STROKE
Anderson, D.C. (1990), Progress Report of the Stroke Prevention in Atrial-Fibrillation
Study. Stroke, 21 (11), 12-17
Keywords: HEART/STROKE
Mcbride, R. (1990), Design of A Multicenter Randomized Trial for the Stroke
Prevention in Atrial-Fibrillation Study. Stroke, 21 (4), 538-545
Keywords: HEART/STROKE
Lowenthal, A. (1990), European Stroke Prevention Study. Stroke, 21 (8), 1122-1130
Keywords: HEART/STROKE
Dunbabin, D.W. and Sandercock, P.A.G. (1990), Preventing Stroke by the Modification
of Risk-Factors. Stroke, 21 (12), 36-39.
Abstract: Epidemiologic research has revealed the major risk factors in cerebrovascular
disease. This review will concentrate on three important risk factors: elevated
blood pressure, the most common and important, since it is responsible for up to
70% of all strokes; raised cholesterol; and smoking. These factors are important
not only because they increase the risk of stroke, but also because they are
amenable to modification by drugs, diet, or other interventions. Strategies to
avoid stroke can either 1) try to produce substantial reductions, usually with
drugs, in the level of the risk factor in the few individuals in the population with
high levels (the "high-risk" approach), or 2) try to produce modest reductions int
he level of the risk factor in every individual in the population, usually not with
drugs but with lifestyle modification (the "mass" approach). The prevention of
stroke could best be achieved through continuing medical efforts to deal with
high- risk individuals and through political strategies to encourage a healthier
lifestyle in the population as a whole
Keywords: BLOOD-PRESSURE/CEREBROVASCULAR
DISORDERS/CEREBROVASCULAR-DISEASE/COMMUNITY/CONTROLL
ED TRIAL/CORONARY
HEART-DISEASE/HEART/HYPERTENSION/MALE CIGARETTE
SMOKERS/MORTALITY/RISK
FACTORS/SERUM-CHOLESTEROL/SMOKING/STROKE
Woo, J., Lau, E., Lam, C.W.K., Kay, R., Teoh, R., Wong, H.Y., Prall, W.Y., Kreel, L.
and Nicholls, M.G. (1991), Hypertension, Lipoprotein(A), and
Apolipoprotein-A-I As Risk- Factors for Stroke in the Chinese. Stroke, 22 (2),
203-208.
Abstract: We analyzed the serum concentrations of lipids and lipoproteins and the
prevalence of other risk factors in a case-control study of 304 consecutive
Chinese patients with acute stroke (classified as cerebral infarction, lacunar
infarction, or intracerebral hemorrhage) and 304 age- and sex-matched controls.
For all strokes we identified the following risk factors: a history of ischemic
heart disease, diabetes mellitus, or hypertension; the presence of atrial fibrillation
or left ventricular hypertrophy; a glycosylated hemoglobin A1 concentration of >
9.1%; a fasting plasma glucose concentration 3 months after stroke of > 6.0
mmol/l; a serum triglyceride concentration 3 months after stroke of > 2.1 mmol/l;
and a serum lipoprotein (a) concentration of > 29.2 mg/dl. We found the
following protective factors: a serum high density lipoprotein-cholesterol
concentration of > 1.59 mmol/l and a serum apolipoprotein A-I concentration of
greater-than-or- equal-to 106 mg/dl. The patterns of risk factors differed among
the three stroke subtypes. When significant risk factors were entered into a
multiple logistic regression model, we found a history of hypertension, a high
serum lipoprotein(a) concentration, and a low apolipoprotein A-I concentration
to be independent risk factors for all strokes. The attributable risk for
hypertension was estimated to be 24% in patients aged greater-than-or-equal-to
60 years. In this population, in which cerebrovascular diseases are the third
commonest cause of mortality, identification of risk factors will allow further
studies in risk factor modification for the prevention of stroke
Keywords: ATHEROSCLEROSIS/CEREBRAL INFARCTION/CORONARY
HEART-DISEASE/HEART/HISTORY/INTRACEREBRAL
HEMORRHAGE/LACUNAR
INFARCTION/LIPIDS/MEN/MORTALITY/PLASMA/RISK
FACTORS/SERUM-CHOLESTEROL/STROKE
Sacco, R.L., Hauser, W.A., Mohr, J.P. and Foulkes, M.A. (1991), One-Year Outcome
After Cerebral Infarction in Whites, Blacks, and Hispanics. Stroke, 22 (3),
305-311.
Abstract: Little is known about outcome after cerebral infarction for different ethnic
groups. Of 590 stroke patients hospitalized from 1983 to 1986 at the
Neurological Institute, cerebral infarction over age 39 years occurred in 135
whites, 177 blacks, and 82 Hispanics. Outcome after cerebral infarction differed
by ethnicity. The 1-month mortality rate was similar in whites and blacks and
least in Hispanics. Whites had a slightly greater risk of recurrent stroke or death
than blacks or Hispanics until 6 months after infarction, when their risk stabilized,
while the risk in blacks and Hispanics continued to rise for the entire year of
follow-up. By 1 year, the rate of recurrent stroke or death was 34.8 +/- 4.2% in
whites, 31.1 +/- 3.6% in blacks, and 21.4 +/- 4.8% in Hispanics (p = 0.04).
Differences were found in the distribution of various stroke risk factors in the
three ethnic groups. A Cox proportional hazards model demonstrated that the
ethnic differences in stroke risk factors and infarct subtype were responsible for
the ethnic differences in outcome. An abnormal first electrocardiogram was a
risk factor for stroke recurrence or death in all three ethnic groups, while a
nonlacunar infarct subtype and a history of diabetes were significant only in
Hispanics. Understanding the associations of stroke determinants with ethnicity
may lead to more focused secondary prevention of recurrent stroke
Keywords: CEREBROVASCULAR DISORDERS/CIRCULATION OCCLUSIVE
DISEASE/EPIDEMIOLOGY/HEART/ISCHEMIC STROKE/LEHIGH-
VALLEY/MEXICAN-AMERICANS/NEW-YORK/NORTH-CAROLINA/POP
ULATION/RACIAL
DIFFERENCES/RACIAL-DIFFERENCES/RISK-FACTORS/STROKE/STRO
KE PROGRAMS
Tuomilehto, J., Bonita, R., Stewart, A., Nissinen, A. and Salonen, J.T. (1991),
Hypertension, Cigarette-Smoking, and the Decline in Stroke Incidence in Eastern
Finland. Stroke, 22 (1), 7-11.
Abstract: Finland has high rates of both cardiovascular disease and cardiovascular
disease risk factors. We studied random samples of the population 30-59 years of
age for risk factors in two provinces of eastern Finland in 1972 and 1977. We
then followed both cohorts until 1985 through linkage with national hospital
discharge and death certificate registers. The prevalence of hypertension and
smoking in both provinces declined between 1972 and 1977, as did the stroke
incidence in the 8-year period of follow-up of each cohort. We observed no
differences in stroke incidence between the two provinces. The relative risk of
stroke in the later period (1977-1985) was 0.71 and 0.58 for men and women,
respectively, when compared with the earlier period (1972-1980). Overall, 28%
of all stroke events could be attributed to hypertension, 17% to smoking, and
43% to these two factors jointly. The decrease in the prevalence of hypertension
and smoking accounted for about 29% of the decline
Keywords: ANTIHYPERTENSIVE
TREATMENT/BLOOD-PRESSURE/CARDIOVASCULAR-DISEASE/CIGAR
ETTE
SMOKING/COMMUNITY/FINLAND/HEART/HYPERTENSION/INTERVEN
TION PROGRAM/MORTALITY/NORTH KARELIA
PROJECT/PREVENTION/RISK FACTOR/STROKE/TRENDS
Sacco, R.L., Hauser, W.A. and Mohr, J.P. (1991), Hospitalized Stroke in Blacks and
Hispanics in Northern Manhattan. Stroke, 22 (12), 1491-1496.
Abstract: Background and Purpose: The growing black and Hispanic populations in the
United States call for studies of the rates and prognosis for cerebral infarction to
help plan more focused prevention programs. Methods: Using the Statewide
Planning and Research Cooperative System, we obtained discharge data for
1,034 patients over age 39, who were hospitalized for stroke from 1983 to 1986,
using four zip code areas of the ethnically mixed community of Northern
Manhattan. Results: Stroke incidence increased with age in both men and women
in all three race/ethnic groups. The age-adjusted stroke incidence per 100,000 per
year for men greater-than-or-equal-to 40 years of age was 567 for blacks, 306 for
Hispanics, and 351 for whites. Incidence in women greater-than-or-equal-to 40
years was 716 in blacks, 361 in Hispanics, and 326 in whites. Hypertension and
diabetes were more prevalent in blacks and Hispanics with stroke, whereas
whites had more ischemic cardiac disease. Crude in-hospital mortality was
greater in younger blacks and Hispanics compared with whites, whereas 2-year
readmission rates, overall and for stroke, were similar in the three groups.
Conclusions: These estimates of hospitalized stroke incidence and mortality
substantiate the greater incidence of stroke in blacks and provide new data
concerning Hispanics for public health planning
Keywords: BLACKS/CEREBROVASCULAR DISORDERS/CIRCULATION
OCCLUSIVE DISEASE/EPIDEMIOLOGY/HEART/HISPANIC
AMERICANS/MEXICAN-
AMERICANS/POPULATION/RACIAL-DIFFERENCES/RISK-FACTORS/ST
ROKE/TEXAS
Noel, P., Gregoire, F., Capon, A. and Lehert, P. (1991), Atrial-Fibrillation As A Risk
Factor for Deep Venous Thrombosis and Pulmonary Emboli in Stroke Patients.
Stroke, 22 (6), 760-762.
Abstract: In 539 consecutive stroke patients admitted to a rehabilitation department, we
studied the possible role of atrial fibrillation as a risk factor for deep venous
thrombosis and pulmonary embolism by analyzing a series of relevant clinical
data in patients with and without atrial fibrillation and in patients with and
without venous thromboembolic complications. Deep venous thrombosis as well
as advanced age and cardiac disease were significantly (p 20
cigarettes/day) was 11.1 (95% confidence interval [CI], 5.0-24.9); for current
light smokers (less-than-or-equal-to 20 cigarettes/day), 4.1 (95% CI, 2.3- 7.3);
and for former smokers, 1.8 (95% CI, 1.0-3.2). The risk associated with smoking
was greatest in the 3 hours after a cigarette (odds ratio [OR] = 7.0; 95% Cl,
3.7-13.1) and then fell, not reaching the risk in those who had never smoked until
more than 10 years had passed since the last cigarette. Heavy alcohol use (>2
drinks/day) was also associated with bleeds (OR = 2.2; 95% CI, 0.9-5.1, after
adjusting for smoking status). These associations were not substantially altered
after adjusting for several possible confounding factors, including a history of
hypertension. Conclusions: Cigarette smoking and heavy alcohol use are
associated with the occurrence of subarachnoid hemorrhage
Keywords: ALCOHOL DRINKING/CAROTID-ARTERY
ATHEROSCLEROSIS/CIGARETTE
SMOKING/CONSUMPTION/DISEASE/ELASTASE
ACTIVITY/EPIDEMIOLOGY/HEART/HYPERTENSION/NONHEMORRHA
GIC STROKE/ORAL-
CONTRACEPTIVES/RISK-FACTORS/STROKE/SUB-ARACHNOID
HEMORRHAGE/SUBARACHNOID HEMORRHAGE/WOMEN
Herderschee, D., Hijdra, A., Algra, A., Koudstaal, P.J., Kappelle, L.J. and Vangijn, J.
(1992), Silent Stroke in Patients with Transient Ischemic Attack Or Minor
Ischemic Stroke. Stroke, 23 (9), 1220-1224.
Abstract: Background and Purpose. We studied silent stroke (i.e., infarcts on computed
tomographic scan not related to later symptoms) in patients after transient
ischemic attack or minor ischemic stroke. Methods: Ours is a cross-sectional
study of 2,329 patients who were randomized in a secondary prevention trial
after transient ischemic attack or minor ischemic stroke and had no residual
deficit after the qualifying event. Results: Silent stroke was observed in 13% of
the 2,329 patients. Lacunes formed 79%, cortical lesions 14%, and border zone
lesions 7% of all silent strokes. Silent lacunes were most often located in the
basal ganglia and symptomatic lacunes most often in the corona radiata. Age,
hypertension, and current cigarette smoking were related to the presence of silent
stroke. Silent stroke was equally common in different types of transient ischemic
attack, including transient monocular blindness. Residual symptoms of any kind
were more common in patients with silent stroke than in those without.
Conclusions: Because only the sites of silent stroke infarcts differed slightly from
those of symptomatic infarcts and the frequency of vascular risk factors was
similar to that of symptomatic infarcts, silent stroke may have the same bearing
on future risk as known prior stroke
Keywords: CAROTID ENDARTERECTOMY/CEREBRAL
INFARCTION/CEREBRAL ISCHEMIA/CHRONIC
ATRIAL-FIBRILLATION/DIAGNOSIS/HANDICAP/HEART/INTEROBSER
VER AGREEMENT/RISK/RISK
FACTORS/STROKE/TOMOGRAPHY/TRANSIENT/X-RAY COMPUTED
Lysko, P.G., Lysko, K.A., Yue, T.L., Webb, C.L., Gu, J.L. and Feuerstein, G. (1992),
Neuroprotective Effects of Carvedilol, A New Antihypertensive Agent, in
Cultured Rat Cerebellar Neurons and in Gerbil Global Brain Ischemia. Stroke, 23
(11), 1630-1636.
Abstract: Background and Purpose: Free radical generation mediates part of the
ischemic neuronal damage caused by the excitatory amino acid glutamate.
Carvedilol, a novel multiple-action antihypertensive agent, has been shown to
scavenge free radicals and inhibit lipid peroxidation in swine heart and rat brain
homogenates. Therefore, we studied the neuroprotective effect of carvedilol on
cultured cerebellar neurons and on CA1 hippocampal neurons of gerbils exposed
to brain ischemia. Methods: Neuroprotective mechanisms were studied using an
in vitro ischemia model of cultured rat cerebellar granule cell neurons exposed to
either glutamate or oxygen free radical- generating systems. Prevention of lipid
peroxidation by carvedilol was studied by measuring the formation of
thiobarbituric acid-reactive substance. Gerbil CA1 neuron survival was examined
by direct neuronal count 7 days after 6 minutes of global ischemia with
reperfusion. Results: Carvedilol protected cultured neurons in a dose-dependent
manner against glutamate-mediated excitotoxicity (inhibitory concentration
[IC50] = 1.1 muM) as well as against a 20-minute oxidative challenge (IC50=5
muM). The IC50 against the oxidative challenge was lowered to 1.3 muM by
growing neurons for 24 hours in the presence of carvedilol. At 10 muM
carvedilol inhibited lipid peroxidation 50% and 73% (n=4, p70 years; 1.9%), those with anterior site of myocardial infarction (1.35%), a
previous history of myocardial infarction (1.8%), hypertension (1.4%), stroke in
the past (4.1%), and chronic atrial fibrillation (9%). Multivariate analysis
identified the following as independent predictors of stroke/transient ischemic
attacks occurring in the year after hospital discharge: chronic atrial fibrillation,
older age, history of previous myocardial infarction, anterior myocardial
infarction site, serum glutamic oxaloacetic transaminase levels more than four
times above upper normal limits, and stroke in the past. The age-adjusted 1-year
and long-term mortality rates (4.5 to 7 years; mean, 5.5 years) were significantly
higher in patients with (31% and 62%) than in those without stroke/transient
ischemic attacks (9% and 31%, respectively; P20 vn). All participants underwent
1.5-T MRI and demanding neuropsychological testing. Semiautomated
measurements of the total white matter hyperintensity area and the size of
ventricles and cortical sulci were conducted. Results There were 180 subjects
(77.3%) with negative, 35 (15.0%) with low positive, and 18 (7.7%) with
moderately high positive aCL titers. The frequency and extent of focal and
diffuse brain abnormalities were not related to the aCL status of those examined.
However, subjects with positive aCL results performed worse than those with
negative findings on almost all tests administered, and this effect was mainly IgG
titer related. When an ANCOVA test and partial correlations to correct for slight
group differences in age and for the presence of major vascular risk factors were
used, values of P3.65 L) was 1.4 (95% confidence interval, 1.0 to 2.0). The
inverse association between FEV1 and stroke was only apparent in older men,
current nonsmokers, hypertensive men, and men with preexisting ischemic heart
disease. Lower FEV(1) was associated with higher rates of stroke in hypertensive
men irrespective of smoking status. Inclusion of FEV(1) in a risk score for stroke
provided only a small increase in the absolute risk or the yield of cases in the top
fifth of the score distribution during the follow-up period. Conclusions Lower
levels of FEV(1) are associated with an increased risk of stroke in those already
at high risk, eg, those with ischemic heart disease or hypertension. However, the
association is not strong enough to warrant the use of FEV(1) in making clinical
decisions regarding the treatment of hypertension as it relates to the prevention
of stroke
Keywords: absolute risk/aged/antihypertensive treatment/atrial fibrillation/blood
pressure/BLOOD-PRESSURE/BRITISH MEN/CARDIOVASCULAR-
DISEASE/ENGLAND/fibrillation/FOLLOW-UP/GENERAL-PRACTICE/HEA
RT/HEART-ATTACKS/hypertension/ischemic heart
disease/LEFT-VENTRICULAR FUNCTION/LUNG/MIDDLE-AGED
MEN/myocardial infarction/POPULATION/prevention/prospective
study/PULMONARY-FUNCTION/RESPIRATORY FUNCTION
TESTS/risk/RISK FACTORS/smoking/STROKE/treatment
Nagao, T., Hamamoto, M., Kanda, A., Tsuganesawa, T., Ueda, M., Kobayashi, K.,
Miyazaki, T. and Terashi, A. (1995), Platelet Activation Is Not Involved in
Acceleration of the Coagulation System in Acute Cardioembolic Stroke with
Nonvalvular Atrial-Fibrillation. Stroke, 26 (8), 1365-1368.
Abstract: Background and Purpose It is generally accepted that the coagulation system is
activated in ischemic stroke and that platelet activation is involved in the
pathogenesis of this disease. However, little is known about how and to what
extent platelet activity participates in coagulation system enhancement. We
evaluated the hemostatic condition, especially with regard to platelet function
and the coagulation system, within 3 days of onset of acute stroke. The study
participants were limited to elderly patients with cardioembolic stroke due to
nonvalvular atrial fibrillation. Methods Seventeen elderly patients with acute
cardioembolic stroke due to nonvalvular atrial fibrillation were investigated,
Within 3 days of stroke onset, beta-thromboglobulin (BTG), platelet factor 4
(PF4), thrombin-antithrombin III complex (TAT), and D-dimer from arterial
blood were carefully evaluated in these patients. Blood samples from 19 healthy
age-and sex-matched control subjects were also examined. Results The two
studied markers of platelet activity did not change in the patients or the control
subjects, and the between-group differences between the stroke and control
groups were not statistically significant (BTG, 43.8 versus 31.9 ng/mL; PF4,
9.06 versus 5.78 ng/mL; respectively). In contrast, the two studied
coagulation-system indicators were markedly elevated in the patients compared
with the control subjects (TAT, 13.8 versus 3.5 ng/mL, P 70%
stenosis (P70% stenosis, a cerebral
angiogram was reported as seldom or never used by 42% of physicians who
viewed the test as readily available versus 67% if cerebral angiography was
perceived as not readily available (P=.005). Multinomial multiple logistic
regression analysis showed that symptom status, the degree of stenosis,
perceived availability of CE, and physician specialty independently contributed
to the explained variance in the reported use of CE (P70% stenosis compared with patients with 50% to 70% stenosis
(P 6 hours) from onset
to first CT and small hematoma ( 6 hours after ictus who has a hematoma
volume 75 years and a history of congestive heart
failure. Conclusions Almost 1 in 5 patients underwent CEA inappropriately,
which was most commonly due to apparent overestimation of stenosis severity,
and half had uncertain indications. Our high complication rate possibly negated
any overall surgical benefit in the large group of asymptomatic patients
Keywords: age/angina/asymptomatic/CARDIAC RISK/carotid/carotid
endarterectomy/CEREBRAL-ISCHEMIA/complications/CORONARY-ARTER
Y DISEASE/endarterectomy/health/health services misuse/HEART/heart
failure/history/infarction/LARGE METROPOLITAN
AREA/MORTALITY/MULTICENTER/myocardial
infarction/PATTERNS/PREVENTION/randomized/randomized controlled
trial/risk/risk factors/risk factors for stroke/severity/STENOSIS/STROKE/trials
Tutuarima, J.A., vanderMeulen, J.H.P., deHaan, R.J., vanStraten, A. and Limburg, M.
(1997), Risk factors for falls of hospitalized stroke patients. Stroke, 28 (2),
297-301.
Abstract: Background and Purpose Patients with stroke are at a high risk for falling. We
assessed the fall incidence and risk factors for patients hospitalized as the result
of an acute stroke. Methods We studied a cohort of 720 stroke patients from 23
hospitals in The Netherlands. The data were abstracted from the medical and
nursing records. Results We studied 346 women and 374 men with a median age
of 75 years; 77% of the patients had had a cerebral infarct, 17% had had a
hemorrhage, and 6% had had an undefined stroke. We recorded 104 patients
(14%) who fell at least once; there were a total of 173 falls. The incidence of
falls was 8.9/1000 patients per day. The daily incidence was 6.2/1000 patients for
first falls and 17.9/1000 patients for second falls. Heart disease (relative risk
[RR], 1.6; 95% confidence interval [CI], 1.0 to 2.4), mental decline (RR, 1.6;
95% CI, 1.0 to 2.4), and urinary incontinence (RR, 2.3;95% CI, 1.3 to 4.1) were
incremental risk factors for first falls, whereas the use of major psychotropic
drugs lowered the fall risk (RR, 0.5; 95% CI, 0.3 to 0.8). The fall RR for patients
with one previous fall was 2.2 (95% CI, 1.5 to 3.2), adjusted for the other risk
factors. Most falls occurred during the day. Approximately 25% of the falls
caused slight-to-severe injury, whereas three falls (2%) led to hip fractures.
Conclusions Stroke patients have a high risk of falling. The identification of
patients at risk may be a first step toward the implementation of fall-prevention
measures for these patients
Keywords: accidental falls/acute/age/cerebral/cerebrovascular
disorders/COMMUNITY/drugs/ELDERLY
PERSONS/fractures/HEART/hemorrhage/incidence/incidences/INJURIES/INTE
RVENTION/men/Netherlands/PREVENTION/relative risk/risk/risk
factors/stroke/women
Yamamoto, Y., Akiguchi, I., Oiwa, K., Hayashi, M. and Kimura, J. (1998), Adverse
effect of nighttime blood pressure on the outcome of lacunar infarct patients.
Stroke, 29 (3), 570-576.
Abstract: Background and Purpose-Antihypertensive therapy has dramatically reduced
the incidence of stroke recurrence; however, recent studies have suggested that
the excessive lowering of blood pressure (BP) could cause ischemic cerebral
lesions. We conducted a prospective study using MRI and ambulatory blood
pressure monitoring to elucidate the appropriate BP control level for the
prevention of silent and symptomatic cerebral infarction. Methods-We studied
105 patients with symptomatic lacunar infarcts who underwent repeated MRI
and 24-hour BP monitoring in the period between the two MRI examinations.
The patients were divided into five groups according to their outcome as follows:
group 1, those who showed neither symptomatic episodes nor the development
of new silent lesions detected by repeated MRI; group 2, those who only showed
the development of silent lacunae; group 3, those who showed development of
diffuse white matter lesions only; group 4, those who showed the development of
both silent lacunae and diffuse white matter lesions; and group 5, those who
showed symptomatic cerebrovascular disease. Groups 2 through 5 were then
compared with group 1 with respect to the ambulatory BP values, Results-The
average follow-up period was 3.2+/-2.6 years (mean+/-SD). In all patients in
group 1 and group 5, nighttime systolic BPs were significantly higher than in
group 1 (both P90 mm Hg and
90 mm Hg may be
regarded as a factor predictive of the recurrence of HBH
Keywords: blood pressure/cerebral
hemorrhage/hemorrhage/hypertension/INTRACEREBRAL
HEMORRHAGE/recurrence/risk/risk factors/STROKE/stroke prevention
Ay, H., Buonanno, F.S., Abraham, S.A., Kistler, J.P. and Koroshetz, W.J. (1998), An
electrocardiographic criterion for diagnosis of patent foramen ovale associated
with ischemic stroke. Stroke, 29 (7), 1393-1397.
Abstract: Background and Purpose-An M-shaped bifid notch on the ascending branch,
or on the zenith, of the R wave in inferior ECG leads (II, III, aVF), so called
"crochetage," is an indicator of ostium secundum atrial septal defects. The
pathophysiology underlying this finding remains unknown. A crochetage pattern
has not been previously reported in patients with patent foramen ovale (PFO);
however, the location of this defect and the secundum atrial septum are similar.
The purpose of this study was to determine the prevalence of crochetage in
cryptogenic stroke patients with or without PFO. Methods-A conservative
selection scheme was used to identify patients likely to have had PFO-associated
strokes tie, cryptogenic) and to exclude any structural, functional, or vascular
heart disease responsible for ECG changes. All patients had a standard 12-lead
EGG. The prevalence of crochetage in each group was determined. Results-Sixty
consecutive patients were studied (28 with echo-documented PFO and 32
echo-negative control subjects). The crochetage pattern was present in at least 1
inferior limb lead in 10 of 28 PFO patients (36%) and 3 of 32 control subjects
(9%) (P84 age group). Concomitantly, there
was a significant decrease in mortality (1.2% versus 0.8%), cardiac complication
rate (ICD-9- CM 997.1, 4.1% versus 3.0%) and percentage of patients discharged
>7 days postoperatively (8.9% versus 4.9%), Mean length of stay declined 28%
(5.8 versus 4.1 days), and mean adjusted charges declined 7% ($19 456 versus
$18 055). Although the average case was less costly, the increased volume
resulted in an estimated $56 million increase in annual hospital payments.
Conclusions-The dramatic increase in the number of CEAs performed in the state
of Florida after release of the ACAS Clinical Advisory suggests a causal
relationship and mandates further cost-effectiveness analyses
Keywords: AD-HOC-COMMITTEE/age/ARTERY
STENOSIS/atherosclerosis/carotid/carotid arteries/carotid
endarterectomy/cerebrovascular disorders/COMPLICATIONS/cost
effectiveness/cost-effectiveness/DISEASE/endarterectomy/epidemiology/EPIDE
MIOLOGY/GUIDELINES/hospital/mortality/PREVENTION/race/RISKS/STR
OKE/stroke prevention/SURGICAL-TREATMENT/trials
Hsia, D.C., Moscoe, L.M. and Krushat, M. (1998), Epidemiology of carotid
endarterectomy among Medicare beneficiaries - 1985-1996 update. Stroke, 29 (2),
346-350.
Abstract: Background and Purpose-This article describes changes in the rate and
outcome of carotid endarterectomies among Medicare beneficiaries.
Methods-We analyzed Interventional Classification of Diseases, 9th Revision,
Clinical Modification (ICD-9-CM) codes as shown on Medicare bills to calculate
carotid endarterectomy frequency, rate, and perioperative mortality by patient
demography and hospital characteristics. Results-After initially peaking at 61273
procedures (20.6 per 10000 beneficiaries) in 1985, the frequency of carotid
endarterectomy among Medicare beneficiaries declined to 46571 (14.3 per 10000)
in 1989 and then rose to 108275 (28.6 per 10000) in 1996. Patients were
predominantly aged 65 to 74 years, male, and white; surgery occurred mainly in
large, urban, nonprofit, and teaching hospitals. Perioperative mortality declined
from 3.0% in 1985 to 1.6% in 1996. Conclusions-The frequency and rate of
carotid endarterectomy showed prompt response to reports from clinical trials.
Perioperative mortality both improved and converged over time but did not attain
the rates reported by the trials. Patients aged 85+ years suffered twice the
average perioperative mortality
Keywords: ACCURACY/aged/carotid/carotid endarterectomy/cerebral
ischemia/CEREBRAL- ISCHEMIA/clinical
trials/elderly/endarterectomy/EXTRACRANIAL
ARTERIES/HEAD/hospital/mortality/PERFORMANCE/PREVENTION/PROS
PECTIVE-PAYMENT SYSTEM/STENOSIS/STROKE/stroke
management/surgery/trials
Sacco, R.L., Gan, R., Boden-Albala, B., Lin, I.F., Kargman, D.E., Hauser, W.A., Shea, S.
and Paik, M.C. (1998), Leisure-time physical activity and ischemic stroke risk -
The Northern Manhattan Stroke Study. Stroke, 29 (2), 380-387.
Abstract: Background and Purpose-Physical activity reduces the risk of premature death
and cardiovascular disease, but the relationship to stroke is less well studied. The
objective of this study was to investigate the association between leisure- time
physical activity and ischemic stroke in an urban, elderly, multiethnic population.
Methods-The Northern Manhattan Stroke Study is a population-based incidence
and case-control study. Case subjects had first ischemic stroke, and control
subjects were derived through random-digit dialing with 1:2 matching for age,
sex, and race/ethnicity. Physical activity was recorded through a standardized
in-person interview regarding the frequency and duration of 14 activities over the
2 prior weeks. Conditional logistic regression was used to calculate odds ratios
(OR) and 95% confidence intervals after adjustment for medical and
socioeconomic confounders. Results- Over 30 months, 369 case subjects and 678
control subjects were enrolled. Mean age was 69.9+/-12 years; 57% were women,
18% whites, 30% blacks, and 52% Hispanics. Leisure-time physical activity was
significantly protective for stroke after adjustment for cardiac disease, peripheral
vascular disease, hypertension, diabetes, smoking, alcohol use, obesity, medical
reasons for limited activity, education, and season of enrollment (OR=0.37; 95%
confidence interval=0.25 to 0.55). The protective effect of physical activity was
detected in both younger and older groups, in men and women, and in whites:
blacks, and Hispanics. A dose-response relationship was shown for both intensity
(light-moderate activity OR=0.39; heavy OR=0.23) and duration (2 days. Data were available for 98% of the cohort at 5 years, by which time 199
patients (58%) had died and 52 (15%) had experienced a recurrent stroke, 12
(23%) of which were fatal within 28 days. The 5-year cumulative risk of first
recurrent stroke was 22.5% (95% confidence limits [CL], 16.8%, 28.1%). The
risk of recurrent stroke was greatest in the first 6 months after stroke, at 8.8%
(95% CL, 5.4%, 12.1%). After adjustment for age and sex, the prognostic factors
for recurrent stroke were advanced, but not extreme, age (75 to 84 years) (hazard
ratio [HR], 2.6; 95% CL, 1.1, 6.2), hemorrhagic index stroke (HR, 2.1; 95% CL,
0.98, 4.4), and diabetes mellitus (HR, 2.1; 95% CL, 0.95, 4.4).
Conclusions-Approximately 1 in 6 survivors (15%) of a first- ever stroke
experience a recurrent stroke over the next 5 years, of which 25% are fatal within
28 days. The pathological subtype of the recurrent stroke is the same as that of
the index stroke in 88% of cases. The predictors of first recurrent stroke in this
study were advanced age, hemorrhagic index stroke, and diabetes mellitus, but
numbers of recurrent events were modest. Because the risk of recurrent stroke is
highest (8.8%) in the first 6 months after stroke, strategies for secondary
prevention should be initiated as soon as possible after the index event
Keywords: Australia/CEREBRAL INFARCTION/diabetes
mellitus/HYPERTENSION/MINNESOTA/MORTALITY/predictors/prevention/
prognosis/recurrence/risk/ROCHESTER/secondary prevention/stroke/stroke
outcome/SUBTYPES/SURVIVAL/transient/transient ischemic attack
Schmidt, H., Schmidt, R., Niederkorn, K., Gradert, A., Schumacher, M., Watzinger, N.,
Hartung, H.P. and Kostner, G.M. (1998), Paraoxonase PON1 polymorphism
Leu-Met54 is associated with carotid atheroselerosis - Results of the Austrian
Stroke Prevention Study. Stroke, 29 (10), 2043-2048.
Abstract: Background and Purpose-Genetic polymorphism at the paraoxonase locus is
associated with serum concentration and activity of paraoxonase and with
increased risk for coronary heart disease. Two frequent polymorphisms present at
the paraoxonase gene are the methionine (M allele) leucine (L allele) interchange
at position 54 and the arginine (B allele) glutamine (A allele) interchange at
position 191. This is the first study to determine the effect of these
polymorphisms on carotid atherosclerosis. Methods-The paraoxonase genotypes
at positions 54 and 191 of 316 randomly selected individuals aged 44 to 75 years
were determined by polymerase chain reaction-based restriction enzyme
digestion. Carotid atherosclerosis was assessed by color-coded Duplex scanning
and was graded on a 5- point scale ranging from 0 (normal) to 5 (complete
luminal obstruction). Results-The LL, LM, and MM genotypes at position 54
were noted in 137 (43.4%), 132 (41.8%), and 47 (14.9%) subjects; the AA, AB,
and BE genotypes at position 191 occurred in 172 (54.4%), 124 (39.2%), and 20
(6.3%) individuals. The LL genotype was significantly associated with the
presence and severity of carotid disease (P=0.022), whereas the 191
polymorphism had no effect. Logistic regression analysis with age and sex
forced into the model demonstrated plasma fibrinogen (odds ratio [OR], 1.005
per mg/dL), LDL cholesterol (OR, 1.01 per mg/dL),cardiac disease (OR, 1.75),
and the paraoxonase LL genotype to be significant predictors of carotid
atherosclerosis. The ORs for the associations with age and sex were 1.09
(P=0.0003) and 1.66 (P=0.052) per year. Conclusions- These data suggest that
the paraoxonase LL genotype may represent a genetic risk factor for carotid
atherosclerosis
Keywords: age/aged/APOLIPOPROTEIN-A-I/atherosclerosis/carotid/carotid
arteries/cholesterol/coronary heart disease/CORONARY
HEART-DISEASE/DIABETES-MELLITUS/fibrinogen/GENE/genetic/genetics/
heart/HUMAN SERUM
PARAOXONASE/LDL/LIPID-PEROXIDATION/LOW-DENSITY-LIPOPROT
EIN/OXIDATIVE
MODIFICATION/paraoxonase/predictors/RISK/severity/sex/STROKE/TRANS
GENIC MICE
Goldstein, L.B., Hey, L.A. and Laney, R. (1998), North Carolina Stroke Prevention and
Treatment Facilities Survey - rtPA therapy for acute stroke. Stroke, 29 (10),
2069-2072.
Abstract: Background and Purpose-North Carolina is situated in the "stroke belt" region
of the United States, an area of the country with a particularly high incidence of
cerebrovascular disease. The North Carolina Stroke Prevention and Treatment
Facilities Survey was carried out to determine the availabilities of a variety of
stroke prevention and treatment services throughout the state. The purpose of the
present study was to determine how widely recombinant tissue-type plasminogen
activator (rtPA) has been adopted for the treatment of patients with acute
ischemic stroke and to determine the characteristics of the medical facilities in
the state offering this therapy. Methods-A single-page survey was mailed to the
medical center directors of each inpatient medical facility in North Carolina.
Data collected included questions related to the availability of selected basic and
advanced diagnostic tests and procedures, stroke prevention and treatment
programs and services (community stroke awareness program, acute stroke
identification program, acute stroke team, stroke rtPA protocol, stroke care map,
neurologist), and facilities (Stroke Acute Care Unit or equivalent).
Results-Responses were obtained from all 125 inpatient medical facilities in
North Carolina, rtPA stroke protocols were adopted in 54 facilities located in 46
of the state's 100 counties. Seventy-four percent of the state's population resides
in counties with hospitals providing rtPA treatment. Compared with facilities not
offering rtPA, those with rtPA protocols more commonly sponsored stroke
community awareness programs (41% versus 17%, P=0.003) and more
frequently had an organized stroke team (31% versus 8%, P=0.001), used stroke
care maps (56% versus 17%, P75 years) who have a higher incidence of bleeding events
while undergoing anticoagulation. Methods-We calculated the incremental costs
per life-year gained for 4 base cases using efficacy data from the Boston Area
Anticoagulation Trial for Atrial Fibrillation, the meta- analysis of the 5
nonrheumatic atrial fibrillation trials, cost data from a district general hospital,
and review of the literature. Results-The cost per life-year gained free from
stroke over 10 years ranged from -pound 400.45 (ie, a resource saving achieved
for each life-year gained free from stroke) to pound 13221.29. The results were
most sensitive to alteration in the frequency of anticoagulation monitoring.
Conclusions-For medical and economic reasons, anticoagulation treatment in the
prevention of ischemic stroke is justified. Although older patients are more at
risk of adverse events, anticoagulation is more cost-effective in this group
Keywords: adverse events/aged/anticoagulation/ASPIRIN/atrial fibrillation/clinical
trials/cost effectiveness/cost-benefit analysis/cost-effectiveness/costs/district
general hospital/elderly/fibrillation/hospital/incidence/ischemic
stroke/prevention/primary prevention/risk/stroke/treatment/trials/WARFARIN
Lee, I.M. and Paffenbarger, R.S. (1998), Physical activity and stroke incidence - The
Harvard Alumni Health Study. Stroke, 29 (10), 2049-2054.
Abstract: Background and Purpose-PhysiologicaIly, it appears plausible for physical
activity to decrease stroke risk; however, epidemiological studies have produced
mixed findings. Furthermore, few studies have examined specific kinds and
intensities of activities. The purpose of this study was to examine the association
between physical activity, including its various components (walking, climbing
stairs, participation in sports and recreational activities), and stroke risk.
Methods-This was a prospective cohort study of 11 130 Harvard University
alumni (mean age, 58 years) without cardiovascular disease and cancer at
baseline. Men reported their walking, stair climbing, and participation in sports
or recreation on baseline questionnaires in 1977. Stroke occurrence was assessed
with another questionnaire in 1988. Death certificates were obtained for
decedents through 1990 to determine strokes not previously reported (total
strokes = 378). We used Cox proportional hazards regression to estimate the
relative risks and 95% CIs for stroke occurrence associated with physical activity.
Results-After adjustment for age, smoking, alcohol intake, and early parental
death, the relative risks of stroke associated with 90% responded to
the survey. Nearly all respondents reported prescribing aspirin in patients at risk
of atherothrombotic stroke, but significant differences between NA and WE are
shown by the recommended doses (P500 mg daily are
given exclusively by American participants (36%), whereas doses 95% stenosis (89% versus 53%; P8% between 1992 and 1996. Conclusions-Increased research on stroke in blacks
is needed to develop more effective strategies for primary and secondary
prevention of stroke to reduce the high burden of premature mortality and
morbidity. Renewed efforts to prevent and control stroke risk factors tin
particular elevated blood pressure, diabetes, and smoking) are needed among US
blacks
Keywords: AFRICAN-AMERICANS/blacks/blood pressure/carotid/carotid
artery/cerebral/cerebral infarction/cerebrovascular
disorders/control/DECLINE/diabetes/DISEASE/EPIDEMIOLOGY/ETHNIC-DI
FFERENCES/EXPERIENCE/HYPERTENSION/infarction/men/morbidity/mort
ality/population-based/prevention/primary/review/risk/risk factors/secondary
prevention/smoking/STROKE/United States/UNITED-STATES/WHITE
DIFFERENCES/WOMEN
Leppala, J.M., Virtamo, J., Fogelholm, R., Albanes, D. and Heinonen, O.P. (1999),
Different risk factors for different stroke subtypes - Association of blood
pressure, cholesterol, and antioxidants. Stroke, 30 (12), 2535-2540.
Abstract: Background and Purpose-Blood pressure is an important risk factor for stroke,
but the roles of serum total and HDL cholesterol, alpha-tocopherol, and
beta-carotene are poorly established. We studied these factors in relation to
stroke subtypes, Methods-Male smokers (n=28 519) aged 50 to 69 years without
a history of stroke participated in the Alpha- Tocopherol, Beta-Carotene Cancer
Prevention (ATBC) Study, a controlled trial to test the effect of alpha-tocopherol
and beta-carotene supplementation on cancer. From 1985 to 1993, a total of 1057
men suffered from primary stroke: 85 had subarachnoid hemorrhage; 112,
intracerebral hemorrhage; 807, cerebral infarction; and 53, unspecified stroke.
Results- Systolic blood pressure greater than or equal to 160 mm Hg increased
the risk of all stroke subtypes 2.5 to 4-fold. Serum total cholesterol was inversely
associated with the risk of intracerebral hemorrhage, whereas the risk of cerebral
infarction was raised at concentrations greater than or equal to 7.0 mmol/L, The
risks of subarachnoid hemorrhage and cerebral infarction were lowered with
serum HDL cholesterol levels greater than or equal to 0.85 mmol/L. Pretrial high
serum alpha-tocopherol decreased the risk of intracerebral hemorrhage by half
and cerebral infarction by one third, whereas high serum beta-carotene doubled
the risk of subarachnoid hemorrhage and decreased that of cerebral infarction by
one fifth. Conclusions-The risk factor profiles of stroke subtypes differ,
reflecting different etiopathology, Because reducing atherosclerotic diseases,
including ischemic stroke, by lowering high serum cholesterol is one of the main
targets in public health care, further studies are needed to distinguish subjects
with risk of hemorrhagic stroke. The performance of antioxidants needs
confirmation from clinical trials
Keywords: aged/antioxidants/beta carotene/BETA-CAROTENE/blood pressure/BRAIN
INFARCTION/CARDIOVASCULAR-DISEASE/cerebral/cerebral
infarction/cholesterol/CIGARETTE-SMOKING/clinical
trials/DIETARY/diseases/Finland/HDL/HDL cholesterol/health/health
care/hemorrhage/history/infarction/intracerebral
hemorrhage/INTRACEREBRAL HEMORRHAGE/ischemic/ischemic
stroke/men/PLATELET-FUNCTION/public health/risk/risk factor/risk
factors/serum/SERUM-CHOLESTEROL/stroke/subarachnoid
hemorrhage/SUBARACHNOID HEMORRHAGE/trials/VITAMIN-E
Evenson, K.R., Rosamond, W.D., Cai, J.W., Toole, J.F., Hutchinson, R.G., Shahar, E.
and Folsom, A.R. (1999), Physical activity and ischemic stroke risk - The
Atherosclerosis Risk in Communities Study. Stroke, 30 (7), 1333-1339.
Abstract: Background and Purpose-The relationship between physical activity and stroke
is inconclusive according to the 1996 US Surgeon General's Report on Physical
Activity and Health. Therefore, this study examined the relationship between
physical activity and ischemic stroke risk among 14 575 Atherosclerosis Risk in
Communities Study participants aged 45 to 64 years free of self-reported stroke
and coronary heart disease at baseline. Methods-Eligible potential stroke
hospitalizations were identified from ongoing hospital surveillance and from
hospitalizations reported by the cohort study participants. All strokes were
validated by hospitalization records. Physical activity was measured as sport,
leisure (nonsport), and work with the use of the Baecke questionnaire.
Multivariable Poisson and Cox proportional hazards models were used to
determine the association of differing levels of physical activity with ischemic
stroke incidence. Results-During an average of 7.2 years of follow-up, 189
incident ischemic strokes occurred. Ischemic stroke incidence rates were highest
in the lowest quartile of sport, leisure, and work scores. The hazard rate ratios
with 95% Cls for ischemic stroke for the highest quartile compared with the
lowest quartile of activity adjusted for age, sex, race-center, education, and
smoking, were sport 0.83 (0.52, 1.32), leisure 0.89 (0.57, 1.37), and work 0.69
(0.47, 1.00). Further adjustment for factors that likely were intermediate
variables (hypertension, diabetes, fibrinogen, and body mass index) between
physical activity and stroke attenuated the associations. Conclusions-Our
findings suggest that physical activity was weakly associated with a reduced risk
of ischemic stroke among middle-aged adults. The association may be due to
links between physical activity and other risk factors or due to chance
Keywords: adults/age/aged/ARTERY WALL THICKNESS/body mass
index/CEREBRAL INFARCTION/CEREBROVASCULAR-DISEASE/cohort
study/coronary heart disease/CORONARY HEART-
DISEASE/diabetes/DIABETES-MELLITUS/DOSE-RESPONSE/education/epid
emiology/fibrinogen/FOLLOW-UP/heart/hospital/hospitalization/hypertension/i
ncidence/ischemic/ischemic stroke/leisure activities/LIFE-STYLE
FACTORS/MIDDLE-AGED MEN/NORTHERN MANHATTAN
STROKE/physical activity/risk/risk factors/sex/smoking/stroke/stroke
incidence/stroke prevention
Di Carlo, A., Lamassa, M., Pracucci, G., Basile, A.M., Trefoloni, G., Vanni, P., Wolfe,
C.D.A., Tilling, K., Ebrahim, S. and Inzitari, D. (1999), Stroke in the very old -
Clinical presentation and determinants of 3-month functional outcome: A
European perspective. Stroke, 30 (11), 2313-2319.
Abstract: Background and Purpose-The oldest old represent the fastest- growing
segment of the elderly population in developed countries. Knowledge of
age-specific aspects of stroke is essential to establish diagnostic and therapeutic
pathways and to set up prevention and rehabilitation programs. We sought to
evaluate stroke features and functional outcome in patients aged greater than or
equal to 80 years compared with the younger age groups. Methods-In a European
Union Concerted Action involving 7 countries, 4499 patients hospitalized for
first-in-a-lifetime stroke were evaluated for demographics, risk factors, clinical
presentation, resource use, and 3-month disability (Barthel Index) and handicap
(Rankin Scale). Results-Overall, 3141 patients (69.8%) were aged 160 mm Hg (RR=2.3, P2 million person-years were analyzed. Age-adjusted
rates for first-ever stroke and for all stroke events were calculated and temporal
trends estimated by means of Poisson regression, Results-The overall annual
stroke attack rate per 100 000 person-years in the age range greater than or equal
to 25 years was 272 in men and 226 in women. Age-adjusted stroke attack rates
decreased among men by 3.9% per year and by 4.1% among women.
Age-adjusted stroke incidence rates declined by 2.9% in men and by 3.1% in
women. The trends were statistically significant in both sexes, However, the
proportion of elderly people in the study population increased during the time
period of the study, Hence the numbers of stroke victims in the population
remained largely unaltered. Conclusions-Decreasing age-adjusted stroke
incidence rates point to a reduction of stroke risk during the time period of the
study. Cardiovascular prevention, in particular improved hypertension control, is
believed to have contributed to the incidence reduction, However, the burden of
stroke on the healthcare system did not substantially diminish. The gain likely
achieved from reduction of preventable risk factors was almost counterbalanced
by population aging
Keywords: age/aging/attack rate/BLOOD- PRESSURE/CASE-FATALITY
RATES/cerebrovascular
disorders/control/DENMARK/elderly/epidemiology/FINLAND/HYPERTENSI
ON/incidence/men/MINNESOTA/MORTALITY-RATES/prevention/PROJECT
/risk/risk factors/RISK-FACTORS/SECULAR TRENDS/stroke/stroke
incidence/women
Gorelick, P.B., Born, G.V.R., D'Agostino, R.B., Hanley, D.F., Moye, L. and Pepine, C.J.
(1999), Therapeutic benefit - Aspirin revisited in light of the introduction of
clopidogrel. Stroke, 30 (8), 1716-1721.
Abstract: Background-Antiplatelet agents are widely recognized for their efficacy in
reducing the occurrence of vascular events in patients with atherothrombotic
disease. Aspirin is currently considered to be the "reference standard" antiplatelet
agent and is recommended by the American Heart Association for use in patients
with a wide range of manifestations of cardiovascular disease on the basis of its
high benefit-to-risk and benefit- to-cost ratios. Recently, clopidogrel (Plavix,
Bristol-Myers Squibb Co), another antiplatelet agent, was approved by the Food
and Drug Administration for many of the same indications as aspirin. Summary
of Review-Because physicians will be faced with deciding whether to switch sam
the well-established practice of recommending aspirin for use in patients with
atherothrombotic disease, both aspirin and clopidogrel are compared with respect
to the primary factors that influence such decisions tie, their relative efficacy,
safety, cost, and convenience of use). Conclusions-Based on the available
evidence, aspirin is preferred for the majority of stroke or myocardial infarction
patients at risk of recurrent atherothrombotic events. Clopidogrel may, however,
provide valuable therapeutic benefit over aspirin in patients with peripheral
arterial disease and in stroke or myocardial infarction patients for whom aspirin
treatment is contraindicated or for whom aspirin fails to achieve the desired
therapeutic effect
Keywords: ACETYLSALICYLIC- ACID/ANTIPLATELET/aspirin/aspirin
treatment/cardiovascular/cardiovascular disease/clopidogrel/cost/decision
analysis/DRUG/infarction/MORTALITY/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/peripheral arterial
disease/prevention/primary/risk/safety/SECONDARY
PREVENTION/STROKE/STROKE
PREVENTION/TICLOPIDINE/treatment/TRIAL/UNSTABLE
ANGINA/vascular
Stern, E.B., Berman, M.E., Thomas, J.J. and Klassen, A.C. (1999), Community
education for stroke awareness - An efficacy study. Stroke, 30 (4), 720-723.
Abstract: Background and Purpose-This study examined the effectiveness of a
slide/audio community education program aimed at increasing knowledge of
stroke risk factors, stroke warning signs, and action needed when stroke warning
signs occur. The program targets audiences at higher risk for stroke, especially
individuals who are black or >50 years of age. Methods-Subjects were 657 adults
living in the community or in senior independent-living settings. The study
examined the effectiveness of the program when presented alone and when
accompanied by discussion (facilitation) led by a trained individual. Knowledge
of stroke risk factors and warning signs was assessed using parallel pretests and
posttests developed and validated specifically for the study. Results-ANCOVA
indicated that neither pretesting nor facilitation had a significant effect on
posttest measures of knowledge. Paired t tests of groups receiving both the
pretest and posttest demonstrated significant increase in knowledge (mean
increase, 10.87%; P50% (P75 years compared with 99 of 154 patients (64%) less than or equal to 75
years (P75 years of age, and was associated with
clinical risk factors in all patients. Eligibility for anticoagulation was seen in 72
of 154 (47%) to 105 of 154 (68%) patients aged less than or equal to 75 years,
depending on the criteria used, and in 66 of 80 patients (83%) >75 years,
regardless of criteria used (P75
years (P4.9 ng/mL) of tPA antigen compared with the lowest quartile. The
dose-response relationship between tPA antigen and stroke was equally present
in white and nonwhite women, and further adjustment for total and HDL
cholesterol levels only modestly attenuated this association. Conclusions-This
population-based case-control study shows that elevated plasma tPA antigen
level is independently associated with an increased risk for ischemic stroke in
nondiabetic females 15 to 44 years of age. These findings support the hypothesis
that impaired endogenous fibrinolysis is an important risk factor for stroke in
young women
Keywords: ADULTS/age/ANGINA-PECTORIS/body mass index/cerebral/cerebral
infarction/cerebrovascular/cerebrovascular disease/cholesterol/cigarette
smoking/control/disease
risk/FIBRINOGEN/fibrinolysis/FIBRINOLYTIC-ACTIVITY/HDL/HDL
cholesterol/heart/history/hypertension/infarction/INHIBITOR-1/ischemic/ISCHE
MIC CEREBROVASCULAR-DISEASE/ischemic heart disease/ischemic
stroke/men/MYOCARDIAL-INFARCTION/PAI-1
COMPLEX/PLASMA/plasminogen
activator/population-based/prevention/risk/risk factor/risk
factors/smoking/stroke/stroke prevention/T-PA/women/young adults
Baumgartner, R.W., Mattle, H.P. and Schroth, G. (1999), Assessment of >= 50% and 160/100 mmHg) were history of
hypertension, education less than college, and higher cognitive functioning.
Conclusions-Blood pressure values in excess of national guidelines are common
after stroke and TIA, especially among diabetic patients. Efforts to lower blood
pressure control may enhance secondary prevention
Keywords: ACUTE MYOCARDIAL-INFARCTION/adherence/age/blood
pressure/blood pressure control/cerebrovascular
disorders/control/CT/education/estrogen/EVENTS/guidelines/HEALTH/health
services research/HEART-
DISEASE/history/hypertension/HYPERTENSION/ischemic/PREVENTION/pro
gnosis/randomized/randomized clinical trials/randomized
trial/RECURRENCE/RISK/secondary prevention/secondary stroke
prevention/stroke/stroke prevention/TIA/transient/transient ischemic
attack/TRANSIENT ISCHEMIC ATTACKS/treatment/trial/TRIALS/women
Holroyd-Leduc, J.M., Kapral, M.K., Austin, P.C. and Tu, J.V. (2000), Sex differences
and similarities in the management and outcome of stroke patients. Stroke, 31 (8),
1833-1837.
Abstract: Background and Purpose-Previous studies have documented sex differences in
the management and outcome of patients with cardiovascular disease. However,
little data exist on whether similar sex differences exist in stroke patients. We
conducted a study to determine whether sex differences exist in patients with
acute stroke admitted to Ontario hospitals. Methods-Using linked administrative
databases, we performed a population- based cohort study. The databases
contained information on all 44 832 patients discharged from acute-care
hospitals in Ontario between April 1993 and March 1996 with a most responsible
diagnosis of acute stroke. The main outcomes measured consisted of sex
differences in comorbidities, the use of rehabilitative services, the use of
antiplatelet therapy and anticoagulants tin elderly stroke survivors aged greater
than or equal to 65 years only), discharge destination, and mortality.
Results-Male stroke patients were more likely than female stroke patients to have
a history of ischemic heart disease (18.1% versus 15.3%, respectively; P80 years, poor command of Hebrew, and being hospitalized in a given
medical department emerged as independent variables negatively influencing
warfarin use: P=0.0001, OR 0.30 (95% CI0.17 to 0.55);P=0.02, OR 0.59 (95%
CI 0.36 to 0.94); and P=0.0002, OR 0.26 (95% CI 0.12 to 0.52), respectively. In
contrast, past history of stroke and availability of echocardiographic information,
regardless of the findings, each increased warfarin use (P=0.03, OR 1.95 [95%
CI 1.04 to 3.68], and P=0.0001, OR 3.52 [95% CI 2.16 to 5.72], respectively).
Conclusions-Old age, language difficulties, insufficient doctor alertness to
warfarin benefit, and patient disability produced reluctance to treat. Warfarin use
still lags behind requirements
Keywords: age/ANTICOAGULATION/anticoagulation/ANTITHROMBOTIC
THERAPY/aspirin/atrial fibrillation/bleeding/cardiac/chronic atrial
fibrillation/COMMUNITY/COMPLICATIONS/disability/ELDERLY
PATIENTS/fibrillation/history/Israel/NATIONAL
PATTERNS/population/PREVALENCE/prevention/stroke/stroke
prevention/thromboembolism/treatment/UNIVERSITY
HOSPITALS/use/valves/warfarin
Ellekjaer, H., Holmen, J., Ellekjaer, E. and Vatten, L. (2000), Physical activity and
stroke mortality in women - Ten-year follow-up of the Nord-Trondelag Health
Survey, 1984-1986. Stroke, 31 (1), 14-18.
Abstract: Background and Purpose-Few studies have reported a protective effect of
physical activity on stroke in women, particularly among elderly women. This
study was conducted to examine the association between different levels of
leisure-time physical activity and stroke mortality in a large prospective study of
middle-aged and elderly women. Methods-We conducted a 10-year mortality
follow-up of women aged greater than or equal to 50 years, free from stroke at
baseline (n=14101), who participated in the Nord-Trondelag Health-Survey in
Norway during 1984-1986. Main outcome measures were relative risk of stroke
mortality according to increasing levels of physical activity, with the least active
group used as reference. Results-In groups aged 50 to 69, 70 to 79, and 80 to 101
years, the relative risk: of dying decreased with increasing physical activity, after
adjustment for potentially confounding factors. In groups aged 50 to 69 and 70 to
79 years, the most active women had an adjusted relative risk of 0.42 (95% CI;
0.24 to 0.75) and 0.56(95% CI, 0.36 to 0.88), respectively. In the group aged 80
to 101 years, there was a consistent negative association with physical activity;
the adjusted relative risk for the most active was 0.57 (95% CI, 0.30 to 1.09).
Conclusions-Physical activity was associated with reduced risk of death from
stroke in middle-aged and elderly women. This association persisted after we
excluded individuals with prevalent cardiovascular and cerebrovascular disease
at baseline and women who died during the first 2 years of follow-up. These
observations strengthen the evidence that physical activity should be part of a
primary prevention strategy against stroke in women
Keywords: aged/cardiovascular/cerebrovascular/cerebrovascular disease/CORONARY
HEART-DISEASE/DEATH/disease/elderly/epidemiology/exercise/EXERCISE/
FITNESS/INFARCTION/LIFE-STYLE
FACTORS/MEN/mortality/outcome/physical
activity/POPULATION/prevention/primary/primary prevention/prospective
study/relative risk/risk/risk factors/RISK-FACTORS/stroke/stroke
mortality/stroke prevention/women
Martin, J.B., Pache, J.C., Treggiari-Venzi, M., Murphy, K.J., Gailloud, P., Puget, E.,
Pizzolato, G., Sugiu, K., Guimaraens, L., Theron, J. and Rufenacht, D.A. (2001),
Role of the distal balloon protection technique in the prevention of cerebral
embolic events during carotid stent placement. Stroke, 32 (2), 479-484.
Abstract: Background and Purpose-We sought to quantitatively and qualitatively
evaluate the release of atheromatous plaque debris induced by carotid stenting
procedures. Methods-Eight patients with severe carotid atheromatous stenoses
were treated by stent implantation under distal balloon protection, Blood
samplings were obtained after stent deployment in the blood pooled below the
inflated protection balloon. The samples were centrifuged and evaluated for
plaque debris with the use of light microscopy. The debris release was
quantitatively estimated by dividing the total volume of debris obtained by the
mean debris size. Five patients without endovascular procedure were used as a
control group. Results-The 2 main debris types found were nonrefringent
cholesterol crystals (4 to 389 mum; 115 to 8697 in number) and lipoid masses (7
to 600 mum; 341 to 34 000 in number). There was a statistically significant
difference compared with the samples obtained in the control group (P = 0,017).
Conclusions-Blood samples collected during stent implantation procedures
contain a large quantity of atheromatous plaque debris. This emphasizes the role
of distal protection techniques in avoiding migration of this plaque material into
the cerebral circulation
Keywords:
ANGIOGRAMS/ANGIOPLASTY/ARTERY/ATHEROSCLEROSIS/atheroscler
osis/carotid/carotid stenosis/carotid stent/carotid
stenting/cerebral/cholesterol/control/distal
protection/EMBOLIZATION/plaque/prevention/protection/protection
device/STENOSIS/stent/stenting/stents/STROKE/SURGERY/Switzerland/SYST
EM/TRANSCRANIAL DOPPLER/use
Handschu, R., Garling, A., Heuschmann, P.U., Kolominsky-Rabas, P.L., Erbguth, F. and
Neundorfer, B. (2001), Acute stroke management in the local general hospital.
Stroke, 32 (4), 866-870.
Abstract: Background and Purpose-The majority of stroke patients are treated in local
general hospitals. Despite this fact, little is known about stroke carl in these
institutions. We sought to investigate the status quo of acute stroke management
in nonspecialized facilities with limited equipment and resources. Methods-Four
general hospitals located in smaller cities of a rural area in Germany participated
in this study. The 4 hospitals were similar in structure and technical equipment;
none had a CT scanner in-house. We reviewed the medical records of every
stroke patient hospitalized in I of the 4 hospitals within a period of 8 weeks
within 1 year. Results-We collected data of a total of 95 patients at all 4 hospitals.
The frequency of diagnostic tests was low: at least 1 CT scan was obtained in
only 36.8% of all cases, whereas diagnostic methods available in-house were
used more frequently, such as Doppler ultrasound (49.0%), echocardiography
(42.3%), and 24-hour ECG registration (48.4%). Each hospital had a different
therapeutic approach. Main therapeutic options were the use of pentoxyfilline
(0% to 90.5%), osmodiuretics (0% to 90%), piracetam (0% to 93.3%), and
hydroxyethylstarch (4.8% to 30%). Medication for long-term secondary
prevention was given to 69.8% of all patients. Conclusions-This study provides
one of the few data samples reflecting stroke care in smaller general hospitals.
The findings demonstrate a partially suboptimal level of care in these institutions.
To achieve future improvements, extended human and technical resources as
well as research for stroke care should not be restricted to academic stroke
centers
Keywords: acute/ACUTE ISCHEMIC STROKE/acute stroke/acute stroke
management/ADMISSION/AUDIT/CARE/CT/diagnosis/Doppler/Doppler
ultrasound/echocardiography/Europe/Germany/hospital/hospitals/human/manage
ment/medical/prevention/QUALITY/quality of health
care/research/secondary/secondary prevention/status/stroke/stroke
management/TRIAL/ultrasound/use
Zotz, R.J., Muller, M., Genth-Zotz, S. and Darius, H. (2001), Spontaneous echo contrast
caused by platelet and leukocyte aggregates? Stroke, 32 (5), 1127-1133.
Abstract: Background and Purpose-Spontaneous echocardiographic contrast (SEC) is
correlated to clinical thromboembolic events, We sought to determine the origin
of SEC by utilizing direct analysis of left atrial blood. Methods-We examined the
blood of 13 patients with and 19 without SEC. Blood samples were taken from
the femoral vein and artery and from the right. and left atria after transseptal
puncture. Samples were incubated with fluorescence labeled antibodies directed
against. the platelet (CD41a-PE, CD42b-PE, and CD62p-FITC) and leukocyte
membrane epitopes (CD45-APC and CD14-FITC). The expressed epitopes were
analyzed by dual laser flow cytometry immediately after blood withdrawal.
Results-In the peripheral blood of both groups, more activation and aggregation
were found in the venous blood than in the arterial blood (CD41a, P=0.007;
CD14neutro, P=0.017; and leukocyte-platelet aggregates [LTAg], P=0.002). In
patients without SEC, the degree of activation and aggregation of the cardiac
samples closely resembled the results of the peripheral samples. The degree of
activation and aggregation was significantly higher in the right atrium than in the
left atrium (LTAg, P 24 g/d: OR 0.95, 95% CI 0.43 to 2.10) in
comparison to never drinking. Analyses of beverage type (beer, wine, liquor)
indicated a protective effect for wine consumption in the previous year (19.7 mm Hg per minute of exercise duration had a 2.3-fold increased
risk of any stroke and a 2.3-fold increased risk of ischemic stroke compared with
men whose SBP rise was 70% had a recombinant tissue
plasminogen activator (r-TPA) protocol. We found that 93.2% of residents in
Illinois lived in a county with at least I acute care facility with an r-TPA
treatment protocol. However, many of the non-GCMA receiving hospitals did
not have a neurologist or a neurosurgeon available. Furthermore, specialized
stroke diagnostic technology (eg, transcranial Doppler, diffusion-weighted MRI,
MR angiography) was generally lacking in both the GCMA and non-GCMA, as
were stroke community awareness programs and acute care stroke teams.
Conclusions- Stroke is a preventable and treatable disease. However, there are
barriers to stroke care that are based on the availability of personnel, diagnostic
technology, and programs. A systematic approach to the organization,
implementation, and maintenance of services could improve outcome for stroke
patients and reduce the public health burden of this deadly disease
Keywords: acute/acute stroke/acute stroke
care/angiography/awareness/CENTERS/community/CT/diagnosis/diagnostic/dis
ease/Doppler/health/hospitals/MR/MRI/neurologist/outcome/plasminogen
activator/PREVENTION/public health/recombinant tissue plasminogen
activator/stroke/stroke patients/survey/transcranial/transcranial
Doppler/treatment/treatment outcome
Coull, B.M., Williams, L.S., Goldstein, L.B., Meschia, J.F., Heitzman, D., Chaturvedi,
S., Johnston, K.C., Starkman, S., Morgenstern, L.B., Wilterdink, J.L., Levine,
S.R. and Saver, J.L. (2002), Anticoagulants and antiplatelet agents in acute
ischemic stroke - Report of the Joint Stroke Guideline Development Committee
of the American Academy of Neurology and the American Stroke Association (a
division of the American Heart Association). Stroke, 33 (7), 1934-1942
Keywords: acute/acute ischemic stroke/antiplatelet/antiplatelet
agents/ASPIRIN/CONTROLLED TRIAL/ischemic/ischemic
stroke/MOLECULAR-WEIGHT HEPARIN/PREVENTION/stroke
Bazzano, L.A., He, J., Ogden, L.G., Loria, C., Vupputuri, S., Myers, L. and Whelton,
P.K. (2002), Dietary intake of folate and risk of stroke in US men and women -
NHANES I Epidemiologic Follow-up Study. Stroke, 33 (5), 1183-1188.
Abstract: Background and Purpose-Few population-based studies have examined the
relationship between dietary intake of folate and risk of stroke and cardiovascular
disease (CVD). This study examines the association between dietary intake of
folate and the subsequent risk of stroke and CVD. Methods-Study participants
included 9764 US men and women aged 25 to 74 years who participated in the
National Health and Nutrition Examination Survey I Epidemiologic Follow-up
Study (NHEFS) and were free of CVD at baseline. Dietary intake of folate was
assessed at baseline using a 24-hour dietary recall and calculated using ESHA
software. Incidence data for stroke and CVD were obtained from medical records
and death certificates. Results-Over an average of 19 years of follow-up, 926
incident stroke events and 3758 incident CVD events were documented. The
relative risk (RR) was 0.79 (95% confidence interval [CI], 0.63 to 0.99, P=0.03
for trend) for incident stroke events and 0.86 (95% CI: 0.78 to 0.95, P75th
percentile), after adjustment for demographic and potential medical confounding
factors. Results-The mean age of the 279 subjects was 67.6 +/- 8.5 years; 49%
were men; 63% were Hispanic, 17% black, and 17% white. Mean values for
TNF-alpha and its receptors were as follows: TNF-alpha, 1.88 +/- 3.97 ng/mL;
TNF receptor 1, 2.21 +/- 0.99 ng/mL; and TNF receptor 2, 4.85 +/- 2.23 ng/mL.
Mean MCPT was elevated in those in the highest quartiles compared with lowest
quartiles of TNF receptor 1 and 2 (1.24 versus 0.79 mm and 1.23 versus 0.80 nun,
respectively). Among those aged 70%
(OR, 2.55; 95% CI, 1.07 to 6.07; P=0.033). No significant differences were
observed in MMP-1 distribution. Patients who were homozygous for both the 6A
and 2G alleles had an elevated relative risk of ICA stenosis (OR, 2.66; 95% CI,
1.23 to 5.72; P=0.016). Multiple logistic regression analysis using the common
risk factors and the 6A and 2G allele variants revealed that the 6A allele was an
independent risk factor for ICA stenosis (P=0.049). When 6A/6A and 2G/2G
were combined, the risk factor for ICA stenosis was 3-fold higher (OR, 3.3 1;
95% CI, 1.48 to 7.42; P=0.004). Conclusions-Homozygosity for the 6A allele of
the MMP-3 promoter is associated with carotid stenosis and, in association with
MMP-1 2G homozygosity, predicts an increased risk of ICA stenosis. Even if
obtained from a relatively limited patient series, these results might have relevant
implications for treatment of ICA stenosis and possibly prevention of
carotid-related stroke
Keywords: atherogenesis/atherosclerosis/carotid/carotid artery/carotid artery
stenosis/carotid endarterectomy/carotid stenosis/COLLAGENASE/CORONARY
ATHEROSCLEROSIS/DISEASE/endarterectomy/EXPRESSION/gene/gene
expression/GUIDELINES/HUMAN STROMELYSIN GENE/internal carotid
artery/metalloproteinases/MORPHOMETRIC
ANALYSIS/PLAQUES/polymorphism/prevention/PROGRESSION/relative
risk/risk/risk factor/risk factors/stenosis/STROKE/TRANSCRIPTION/treatment
Worrall, B.B., Johnston, K.C., Kongable, G., Hung, E., Richardson, D.J. and Gorelick,
P.B. (2002), Stroke risk factor profiles in African American women - An interim
report from the African-American Antiplatelet Stroke Prevention Study. Stroke,
33 (4), 913-919.
Abstract: Background and Purpose-If sex differences in stroke risk factor profiles exist
among African Americans in the United States, prevention strategies will need to
reflect those differences. African Americans and women have been
underrepresented in stroke prevention studies. The purpose of this study was to
determine whether medical and lifestyle factors differ among women and men
who have enrolled in the African-American Antiplatelet Stroke Prevention Study
(AAASPS). Methods-We performed a planned exploratory analysis of
differences in baseline characteristics and risk factors between women and men
enrolled in AAASPS, a double-blind, randomized, multicenter, controlled trial.
Frequencies of vascular risk factors and related conditions, medical therapies,
stroke subtypes, and vascular territories were compared between women and
men by 1- way ANOVA and Fisher's exact test where appropriate. Results-A
total of 1087 African American patients (574 women, 513 men) enrolled
between December 1995 and June 1999. Women had higher rates of
hypertension, diabetes, family history of stroke, and no reported leisure exercise.
Men had higher rates of smoking and heavy alcohol use. Few differences were
noted in proportions of stroke subtype or proportions receiving preventive
therapy. Conclusions-AAASPS represents the largest enrollment of African
American women in a recurrent stroke prevention study. Our data suggest that
African American women in a clinical trial differ from men in the frequency of
key vascular risk factors. Although limited, these data provide an important first
characterization of sex differences in African Americans with stroke
Keywords: AAASPS/African American/African Americans/alcohol/baseline
characteristics/BLOOD-PRESSURE/cerebrovascular disorders/clinical
trial/diabetes/DIABETES-MELLITUS/ETHNIC-DIFFERENCES/exercise/GEN
DER DIFFERENCES/HEALTH/history/hypertension/ischemia/ISCHEMIC
STROKE/lifestyle/medical/men/NON-HISPANIC WHITES/NORTHERN
MANHATTAN STROKE/PHYSICAL-ACTIVITY/prevention/racial
differences/randomized/recurrent stroke/risk/risk factor/risk
factors/sex/smoking/STROKE/stroke prevention/stroke subtype/stroke
subtypes/therapy/trial/United States/UNITED-STATES/use/vascular/vascular
risk/vascular risk factors/women
Anderson, D.C., Kappelle, L.J., Eliasziw, M., Babikian, V.L., Pearce, L.A. and Barnett,
H.J.M. (2002), Occurrence of hemispheric and retinal ischemia in atrial
fibrillation compared with carotid stenosis. Stroke, 33 (8), 1963-1967.
Abstract: Background and Purpose-The goal of this study was to examine the
hypotheses that retinal ischemia is caused more often by carotid atherosclerosis
than by atrial fibrillation and that the odds of retinal events compared with
hemispheric events increase with worsening carotid stenosis. Methods-We used
data from the Stroke Prevention in Atrial Fibrillation (SPAF) I through III trials
and North American Symptomatic Carotid Endarterectomy Trial (NASCET),
calculating hemispheric:retinal (H:R) odds for the territory of ischemic events
during follow- up in patients with atrial fibrillation and medically treated 50% to
99% carotid stenosis or occlusion in the respective trials. Results-The H:R odds
were 25:1 in the SPAF aspirin- assigned patients and 2:1 for NASCET vessels.
In NASCET patients, the H:R odds of recurrent ischemic events were 1:4 for
vessels randomized initially for retinal symptoms compared with 6:1 for those
randomized for hemispheric events (significant difference; P24 hours (prolonged), more focused prevention strategies are possible in the
future. Methods-All patients with ischemic stroke, cerebral TIA, RAO, and
amaurosis fugax presenting to our hospital from 1994 to 1999 were examined by
a stroke physician. Risk factors were documented, and patients underwent
carotid Doppler ultrasound. Results-We registered 1491 patients with ischemic
stroke, 580 with cerebral TIA, 79 with RAO, and 138 with amaurosis fugax.
Atrial fibrillation was more common in brain than eye events, whether prolonged
[ischemic stroke versus RAO: odds ratio (OR), 3.6; 95% confidence interval (CI),
1.1 to 12] or transient (cerebral TIA versus amaurosis fugax: OR, 2.9; 95% CI,
0.7 to 13), and more common in prolonged than transient events, whether brain
(stroke versus cerebral TIA: OR, 3.3; 95% CI, 2.1 to 5.1) or eye (RAO versus
amaurosis fugax: OR, 2.7; 95% CI, 0.4 to 16). Severe ipsilateral carotid disease
was less common in brain than eye events, whether prolonged (ischemic stroke
versus RAO: OR, 0.6; 95% CI, 0.3 to 1.0) or transient (cerebral TIA versus
amaurosis fugax: OR, 0.4; 95% CI, 0.2 to 0.6). Conclusions- These data suggest
that there are pathogenetic differences between transient and permanent eye and
brain ischemic syndromes. Improved understanding of these mechanisms could
lead to more effective stroke prevention
Keywords: amaurosis fugax/AMAUROSIS FUGAX/ATTACKS/brain/carotid/carotid
stenosis/cerebral/cerebral infarction/cerebral ischemia/disease/Doppler/Doppler
ultrasound/embolism/fibrillation/hospital/ischemic/ischemic
stroke/mechanisms/MORTALITY/prevention/PROGNOSIS/retinal
artery/risk/risk factors/stroke/STROKE/stroke
prevention/symptoms/TIA/transient/transient ischemic
attacks/ultrasound/vascular/vascular disease
Spence, J.D., Eliasziw, M., DiCicco, M., Hackam, D.G., Galil, R. and Lohmann, T.
(2002), Carotid plaque area - A tool for targeting and evaluating vascular
preventive therapy. Stroke, 33 (12), 2916-2922.
Abstract: Background and Purpose-Carotid plaque area measured by ultrasound
(cross-sectional area of longitudinal views of all plaques seen) was studied as a
way of identifying patients at increased risk of stroke, myocardial infarction, and
vascular death. Methods-Patients from an atherosclerosis prevention clinic were
followed up annually for up to 5 years (mean, 2.5+/-1.3 years) with baseline and
follow-up measurements recorded. Plaque area progression (or regression) was
defined as an increase (or decrease) of greater than or equal to0.05 cm(2) from
baseline. Results-Carotid plaque areas from 1686 patients were categorized into
4 quartile ranges: 0.00 to 0.11 cm(2) (n=422), 0.12 to 0.45 cm(2) (n=424), 0.46
to 1.18 cm(2) (n=421), and 1.19 to 6.73 cm(2) (n=419). The combined 5-year
risk of stroke, myocardial infarction, and vascular death increased by quartile of
plaque area: 5.6%, 10.7%, 13.9%, and 19.5%, respectively (P 194 ng/mL) was associated with
significantly higher relative odds of ischemic stroke compared with the lower
concentrations after adjustment for potential confounding variables (relative odds
2 1 95% CI 1 1 to 4 3) After fibrinogen and total white blood cell count were
added to the multivariable model the relative odds were 2 1 (95% CI 1 1 to 4 2)
and 2 2 (95% CI 1 1 to 4 8) respectively The risk associated with raised
concentrations of sICAM I seemed to be highest for large disabling strokes of
cardioembolic origin Conclusions- Elevated concentrations of sICAM 1 a marker
of inflammation are associated with increased risk of ischemic stroke
independent of other traditional cerebrovascular risk factors and of plasma
fibrinogen among patients at increased risk because of manifest coronary heart
disease
Keywords: age/APPARENTLY HEALTHY-MEN/bezafibrate/C-REACTIVE
PROTEIN/cardioembolic/cardiovascular/cardiovascular
events/CARDIOVASCULAR-DISEASE/CAROTID
ATHEROSCLEROSIS/case-control study/cell adhesion
molecules/cerebrovascular/cerebrovascular risk factors/chronic/confounding
variables/control/coronary heart
disease/design/disease/E-SELECTIN/ENDOTHELIAL
EXPRESSION/FIBRINOGEN/heart/heart
disease/inflammation/ischemic/ischemic stroke/Israel/LEUKOCYTE
ADHESION/MYOCARDIAL-
INFARCTION/pathogenesis/PLASMA-CONCENTRATION/prevention/risk/ris
k factors/secondary/secondary prevention/serum/sex/stroke/stroke ischemic/trial
Vickrey, B.G., Rector, T.S., Wickstrom, S.L., Guzy, P.M., Sloss, E.M., Gorelick, P.B.,
Garber, S., McCaffrey, D.F., Dake, M.D. and Levin, R.A. (2002), Occurrence of
secondary ischemic events among persons with atherosclerotic vascular disease.
Stroke, 33 (4), 901-906.
Abstract: Background and Purpose-Few data exist for large managed care populations
on the occurrence of subsequent acute ischemic events in persons with
established atherosclerotic vascular disease. We estimated the occurrence of
secondary stroke, acute myocardial infarction (AMI), and vascular deaths among
2 large, managed care samples. Methods-With the use of International
Classification of Diseases, Ninth Revision, Clinical Modification codes, patients
aged :2:40 years and with stroke, AMI, or peripheral arterial disease (PAD) were
identified from administrative data of UnitedHealthcare plans during 1995-1998.
Stroke, AMI, and PAD cohorts were identified within a commercial insurance
sample and a Medicare sample. Cumulative occurrences of subsequent stroke,
AMI, or vascular death were estimated by survival analysis. Results-In the stroke
commercial cohort (n= 1631; mean age, 62.1 years), cumulative occurrence of
subsequent events was 4.2%, 6.5%, 9.8%, and 11.8% at 0.5, 1, 2, and 3 years,
respectively; cumulative secondary event occurrence in the AMI commercial
cohort (n=6458; mean age, 56.0 years) was 3.5%, 4.8%, 7.3%, and 8.5% and in
the PAD commercial cohort (n=5813; mean age, 59.2 years) was 1.5%, 2.8%,
4.8%, and 6.5%, respectively. Cumulative secondary event occurrences were
even higher in stroke (n=1518; mean age, 79.5 years), AMI (n=2197; mean age,
76.2 years), and PAD (n=5033; mean age, 76.6 years) cohorts of the Medicare
sample: 18.1%, 17.0%, and 8.7%, respectively, at 3 years. More than 75% of
each stroke cohort's secondary events were strokes; more than 75% of each AMI
cohort's secondary events were AMIs. Of the PAD cohorts' secondary events,
27% to 39% were strokes, 48% to 57% were AMIs, and 13% to 16% were
vascular deaths. Conclusions- Among these managed care enrollees with existing
atherosclerotic vascular disease, subsequent ischemic events represent a
significant symptomatic disease burden. Given these findings, it is very
important to determine whether secondary prevention strategies are being
effectively used to manage patients with diagnosed atherosclerosis
Keywords: ACCURACY/acute/acute myocardial infarction/ACUTE
MYOCARDIAL-INFARCTION/age/aged/arterial/atherosclerosis/CARE/CERE
BROVASCULAR-DISEASE/data
interpretation/death/disease/epidemiology/ICD-9-CM/infarction/ischemic/myoca
rdial/myocardial infarction/peripheral arterial
disease/prevention/RISK/secondary/secondary
prevention/statistical/stroke/STROKE
INCIDENCE/SURVIVAL/use/vascular/vascular disease
Tanne, D., Shotan, A., Goldbourt, U., Haim, M., Boyko, V., Adler, Y., Mandelzweig, L.
and Behar, S. (2002), Severity of angina pectoris and risk of ischemic stroke.
Stroke, 33 (1), 245-250.
Abstract: Background and Purpose-Ischemic stroke and coronary heart disease (CHD)
share risk factors and pathogenic process, ie, atherosclerosis and thrombosis. We
examined the relationship between severity of angina pectoris and its
accompanying characteristics and the risk of incident ischemic stroke.
Methods-We traced 3122 patients with stable CHD, included in a secondary
prevention trial of lipid modification, the Bezafibrate Infarction Prevention trial.
CHD was documented by a history of myocardial infarction greater than or equal
to6 months and 200 mg/dL were discharged without a
statin. Conclusions-The determination of serum lipid profiles varies widely
between different centers. Statins are highly underused in patients with recent
ischemic stroke or TIA, particularly in those in whom statins are indicated
according to existing recommendations (eg, patients with additional coronary
artery disease and hypercholesterolemia). Currently, international guidelines
concerning the use of statins are not adequately implemented in clinical practice
in patients with stroke or TIA
Keywords: acute/acute ischemic stroke/ACUTE
MYOCARDIAL-INFARCTION/atherosclerosis/Austria/cerebrovascular/CHOL
ESTEROL/clinical practice/cohort study/coronary artery
disease/CORONARY-ARTERY-DISEASE/disease/elderly/elderly
patients/guidelines/HEART-DISEASE/hospital/hypercholesterolemia/HYPERLI
PIDEMIA/infarction/ischemic/ischemic stroke/lipids/low density
lipoprotein/low-density lipoprotein cholesterol/LOWERING
THERAPY/myocardial/myocardial infarction/peripheral artery
disease/prevention/PROJECT/prospective cohort study/RISK/SECONDARY
PREVENTION/serum/statin/statins/stroke/TIA/transient/transient ischemic
attack/treatment/TRIALS/USA/use/vascular/vascular disease
Algra, A. (2003), Oral anticoagulation in patients after cerebral ischemia of arterial
origin and risk of intracranial hemorrhage. Stroke, 34 (6), E45-E46.
Abstract: Background and Purpose-In the recently published Warfarin Aspirin Recurrent
Stroke Study (WARSS), a low-intensity anticoagulation regimen was used
because of safety concerns. Such concerns are corroborated by the results of the
Stroke Prevention in Reversible Ischemia Trial (SPIRIT), which was stopped
early because of a high incidence of intracranial hemorrhage with a target
international normalized ratio (INR) of 3.0 to 4.5. In the ongoing
European/Australasian Stroke Prevention in Reversible Ischaemia Trial
(ESPRIT), an intermediate anticoagulation regimen (INR 2.0 to 3.0) is used.
Methods-We performed an interim analysis of the incidence of intracranial
hemorrhage in ESPRIT. Results-Thus far the overall rate of intracranial
hemorrhage is 0.31% (95% CI, 0.18% to 0.52%) per year and 1.21% if all of
these were in the anticoagulation group. Conclusions-We conclude that
anticoagulation with achieved INR of 2.0 to 3.0 is reasonably safe in patients
with cerebral ischemia of arterial origin
Keywords: anticoagulants/anticoagulation/arterial/aspirin/cerebral/cerebral
ischemia/ESPRIT/hemorrhage/incidence/INR/international normalized
ratio/intracerebral hemorrhage/intracranial/intracranial
hemorrhage/ischemia/Netherlands/PREVENTION/results/risk/safety/STROKE/
USA/Warfarin
Kernan, W.N., Inzucchi, S.E., Viscoli, C.M., Brass, L.M., Bravata, D.M., Shulman, G.I.,
McVeety, J.C. and Horwitz, R.I. (2003), Pioglitazone improves insulin
sensitivity among nondiabetic patients with a recent transient ischemic attack or
ischemic stroke. Stroke, 34 (6), 1431-1436.
Abstract: Background and Purpose - The aim of this study was to determine the
effectiveness of pioglitazone compared with placebo for improving insulin
sensitivity among nondiabetic patients with a recent transient ischemic attack
(TIA) or nondisabling ischemic stroke and impaired insulin sensitivity. Methods
- Eligible subjects were men and women >45 years of age who had no history of
diabetes, fasting glucose 3-fold
increase in relative odds of incident ischemic stroke (3.3; 95% Cl, 1.2 to 10.2).
Homocysteine concentrations at the highest quartile (> 17.4 mumol/L) were
associated with significantly higher odds of ischemic stroke compared with the
lowest quartile in matched- pair analysis (3.1; 95% Cl, 1.1 to 9.8) and after
multivariable adjustments (4.6; 95% Cl, 1.3 to 18.9). Adding fibrinogen or
soluble intercellular adhesion molecule-1 concentrations, markers of
inflammation, to the model did not attenuate this association. The linear trends
across the quartiles were significant for all models (P 0.25 for each variable).
Among the patients undergoing Dacron patch angioplasty three strokes (two
temporary and one permanent), seven episodes of bleeding requiring reoperation,
and two neck wound infections requiring rehospitalization occurred. The final 32
patients with Dacron patch closures had their anticoagulation reversed and had
no bleeding complications. Complications in patients undergoing vein patch
closure included one fatal perioperative stroke, two episodes of bleeding
requiring reoperation including one patch rupture, and three groin infections
requiring hospitalization. No significant difference was seen between the two
groups in the rate of perioperative stroke (p = 0.62), episodes of bleeding (p =
0.17), or infection (p => 0.67). Conclusions. Carotid patch angioplasty can be
performed with an acceptably low complication rate with either Dacron or vein,
and the choice of patch material does not clinically affect patient morbidity.
However, reversal of anticoagulation is recommended to minimize bleeding
complications in patients undergoing Dacron patch angioplasty
Keywords: anticoagulation/carotid/carotid
endarterectomy/CLOSURE/ENDARTERECTOMY/hospitalization/LARGE
METROPOLITAN AREA/morbidity/OPERATIONS/PREVENTION/risk/risk
factors/RUPTURE/SAPHENOUS-VEIN PATCH/STENOSIS/stroke/SURGERY
Koudsi, B., Yu, C.D., Ferguson, E.W., Miller, G.A., Merkel, K.D., Wun, T.C. and
Kraemer, B.A. (1996), Prevention of spinal cord injury after transient aortic
clamping with tissue factor pathway inhibitor. Surgery, 119 (3), 269-274.
Abstract: Background. Lower limb paralysis that occurs in 11% of patients after
treatment of thoracic and thoracoabdominal aortic aneurysms is unpredictable
and at present not preventable. The proposed cause for the neurologic changes is
believed to be spinal cord ischemia combined with ischemia/reperfusion injury.
Recombinant tissue factor pathway inhibitor (rTFPI), a multivalent Kunitz-type
inhibitor that binds to tissue factor- VIIa complex, was evaluated. Methods. The
effectiveness of rTFPI as an agent to limit spinal cord ischemia/reperfusion
injury teas studied in a rabbit spinal cord made ischemic for 20 minutes. rTFPI or
phosphate-buffered saline solution (control) was given in randomized blinded
fashion at the onset and conclusion of ischemia. Animals underwent neurologic
evaluation at 24 hours in a blinded fashion with a modified Tarlov Scale to rate
the lower limb paralysis (score of 4 = normal function, score of 0 = complete
paralysis). Results. Seventy-five percent of the TFPI-treated animals had Tarlov
scores of 3 to 4, whereas only 29% of the animals treated with
phosphate-buffered saline solution had such scores (p 50%) carotid
stenosis poses special clinical questions in patients scheduled to undergo general
surgical or major cardiovascular operations. With general surgical procedures,
there is no increased risk of stroke. With cardiovascular operations, however,
there may be an increased risk of stroke in patients with critical (> 90%) carotid
stenosis or occlusion. When perioperative stroke occurs, the most common cause
is embolism rather than focal hemodynamic change. For symptomatic high-
grade (> 70%) extracranial carotid stenosis, carotid endarterectomy is the
treatment of choice in patients who are not high-risk surgical candidates.
Alternatively, for high- risk patients, new drugs such as ticlopidine appear quite
promising, and percutaneous angioplasty may also prove effective. Prevention of
stroke must continue to be a major goal of national medical policy. Because
cigarette smoking is the most important risk factor for extracranial carotid
disease, more strenuous efforts must be directed toward eliminating this health
risk
Keywords: ANGIOPLASTY/ARTERIAL OCCLUSIVE
DISEASES/ATHEROSCLEROSIS/CAROTID/CAROTID ARTERY
DISEASES/CEREBROVASCULAR
DISORDERS/EMBOLISM/ENDARTERECTOMY/HEART/STROKE/TEXAS/
TRANSIENT ISCHEMIC ATTACK/TRANSLUMINAL
Takach, T.J., Ott, D.A., Reul, G.J. and Cooley, D.A. (1996), Critical decision analysis
for extracranial cerebrovascular disease. Texas Heart Institute Journal, 23 (1),
45-50.
Abstract: Results from 6 major prospective studies that have recently been either
completed or terminated prematurely provide compelling evidence of the benefit
of carotid endarterectomy in treating certain groups of patients who have carotid
stenosis. Results of these studies show that symptomatic patients (Those
experiencing transient ischemic attack amaurosis, or completed mild stroke) with
a 70% ipsilateral carotid stenosis have an absolute risk reduction of 39% to 65%
for stroke or death when treated with carotid endarterectomy as opposed to
medical therapy alone. Asymptomatic patients with a 60% ipsilateral carotid
stenosis have a 53% absolute risk reduction for stroke or death when treated with
carotid endarterectomy, rather than medical therapy alone. Combined neurologic
morbidity and perioperative mortality rates for treating carotid stenosis should
not exceed 3% in the asymptomatic patient or 5% to 7% in the symptomatic
patient, on the basis of criteria established by the American Heart Association.
These studies show that prophylactic carotid endarterectomy can effectively
reduce The risk of stroke in both asymptomatic and symptomatic patients.
Centers specializing in vascular surgery can benefit patients by minimizing the
operative risk to levels well below those established by the American Heart
Association
Keywords: absolute risk/arterial occlusive diseases/ARTERY STENOSIS/aspirin
therapeutic use/ASYMPTOMATIC CAROTID STENOSIS/CARDIAC
RISK/carotid/carotid arteries surgery/carotid endarterectomy/carotid
stenosis/carotid stenosis surgery/cerebrovascular disease/cerebrovascular
ischemia/cerebrovascular ischemia prevention and
control/CORONARY-BYPASS/ENDARTERECTOMY/endarterectomy/HEAR
T/MINNESOTA HEART SURVEY/morbidity/MORTALITY/PERIPHERAL
VASCULAR-DISEASE/prospective
studies/risk/STROKE/surgery/SURGICAL-PROCEDURES/TEXAS/transient/tr
ansient ischemic attack
Hernandez-Vila, E., Strickman, N.E., Skolkin, M., Toombs, B.D. and Krajcer, Z. (2000),
Carotid stenting for post-endarterectomy restenosis and radiation-induced
occlusive disease. Texas Heart Institute Journal, 27 (2), 159-165.
Abstract: Surgical treatment of carotid restenosis and radiation-induced occlusive
disease is challenging because of the high morbidity and mortality associated
with this procedure. Carotid stenting has been proposed as an alternative
approach. We report a series of 8 patients who were treated via the percutaneous
approach for either carotid restenosis (n = 4) or radiation- induced occlusive
disease (n = 4). Technical success was achieved in all of the cases. There have
been no deaths or strokes during the periprocedural or follow-up period. After
dilation of the extracranial vessel, 1 patient experienced severe intracranial
internal carotid arterial spasm that required stent placement. Wallstents(R) were
used in 6 patients and S.M.A.R.T(TM) stents were used in the remaining 2.
Restenosis occurred in 2 patients and was treated successfully with redilation or
restenting. Carotid stenting appears to be a feasible and safe alternative to
surgery for restenosis after carotid endarterectomy and for radiation-induced
occlusive disease
Keywords: ANGIOPLASTY/ARTERIAL-DISEASE/blood vessel
prosthesis/carotid/carotid arteries/surgery/carotid endarterectomy/carotid
stenosis/surgery/cerebrovascular disorders/prevention &
control/COMPLICATIONS/endarterectomy/EXPERIENCE/HEART/morbidity/
mortality/NECK/radiotherapy/adverse
effects/RECURRENT/RISK/STENOSIS/stenting/stents/STROKE/surgery/SUR
GICAL-MANAGEMENT/TEXAS/treatment
Grooters, R.K., Thieman, K.C., Schneider, R.F. and Nelson, M.G. (2000), Assessment
of perfusion toward the aortic valve - Using the new dispersion aortic cannula
during coronary artery bypass surgery. Texas Heart Institute Journal, 27 (4),
361-365.
Abstract: When there is an echocardiographic diagnosis of severe mobile atherosclerotic
plaque in the aortic arch or descending aorta, perfusion toward the aortic arch
during cardiopulmonary bypass may create a high risk of embolic neurologic
injury. Other perfusion methods, such as cannulation of the femoral or axillary
arteries, are not always possible, due to atherosclerosis. The ascending aorta may
be an alternative site for perfusion, since it is less frequently diseased. We
assessed a new technique of perfusion toward the aortic valve using a new
cannula designed for this purpose (Dispersion aortic cannula). Our study
included 100 consecutive patients, 72 men and 28 women, with an average age
of 68 +/- 7.0 years (range, 39-89 years). There were no complications related to
insertion of The cannula or perfusion. The ascending aorta could be
cross-clamped and side-clamped without perfusion problems. Three deaths
occurred; none was related to the cannulation technique. No intra-operative
stroke occurred. Two patients suffered neurologic events, one on day 1 and the
other on day 6, both had been fully alert after surgery. Perfusion toward the
aortic valve appears to be sale and hemodynamically effective. This cannulation
technique appears to be an acceptable alternative to present methods,
Comparative studies will be needed to determine whether this alternative
technique is effective in patients with severe aortic arch disease
Keywords: age/aorta/arteries/ASCENDING
AORTA/atherosclerosis/BRAIN-DAMAGE/bypass/bypass surgery/cardiac
surgical procedures/CARDIOPULMONARY BYPASS/cardiopulmonary
bypass/methods/cerebrovascular accident/prevention and
control/cholesterol/prevention and
control/complications/diagnosis/DISEASE/embolism/HEART/high
risk/INJURY/men/MYOCARDIAL REVASCULARIZATION/OPEN-HEART
SURGERY/plaque/PREVENTION/risk/STROKE/surgery/surgical
instruments/TEXAS/thoracic/surgery/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/women
Tan, W.A., Jarmolowski, C.R., Wechsler, L.R. and Wholey, M.H. (2000), New
developments in endovascular interventions for extracranial carotid stenosis.
Texas Heart Institute Journal, 27 (3), 273-280.
Abstract: We provide an overview of recent developments in carotid interventional
technique and equipment including new stents and emboli protection devices.
The newer self-expanding stents lessen the problem of external stent
compression associated with balloon expandable stents, but precise deployment
and the matching (by length) of stents to lesions remain problematic. We also
discuss emerging pharmacologic strategies for cerebral protection in stroke.
Multiple randomized clinical trials and multicenter registries are under way to
compare percutaneous with surgical strategies for the treatment of carotid
stenosis. These include the evaluation, of emboli protection devices, and, to a
lesser degree, intravenous glycoprotein IIb/IIIa antagonists. Other clinical trials
are aimed towards refining the ability to stratify patients by risk, in order to
identify the subsets that would benefit most from these complex and expensive
procedures
Keywords: ACUTE ISCHEMIC STROKE/angioplasty/BALLOON
ANGIOPLASTY/balloon/adverse effects/blood vessel prosthesis
implantation/brain ischemia/drug therapy/prevention & control/carotid/carotid
artery diseases/therapy/carotid stenosis/cerebral/cerebrovascular
disorders/prevention & control/clinical trials/COATED
STENTS/emboli/endarterectomy/ENDOTHELIAL-CELLS/evaluation/GENE-T
HERAPY/HEART/MUSCLE CELL-PROLIFERATION/NEOINTIMA
FORMATION/PORCINE CORONARY-ARTERIES/prosthesis
design/randomized/risk/SHAPE-MEMORY
METAL/stenosis/stents/stents/utilization/stroke/TEXAS/treatment/TRIAL/trials
Kumral, E., Yuksel, M., Buket, S., Yagdi, T., Atay, Y. and Guzelant, A. (2001),
Neurologic complications after deep hypothermic circulatory arrest - Types,
predictors, and timing. Texas Heart Institute Journal, 28 (2), 83-88.
Abstract: To determine the nature of neurologic dysfunction after deep hypothermic
circulatory arrest during aortic arch surgery, we reconsidered the cases of 154
patients who had undergone aortic arch surgery (either of the ascending or
transverse aorta, or both) between November 1993 and July 1999. Temporary
postoperative neurologic dysfunction was seen in 9 patients (5.8%), and another
3 patients (1.9%) experienced stroke. Patients with temporary neurologic
dysfunction had no new infarct and were discharged home with no residual
symptoms. Computed tomographic scans revealed hat 2 patients with stroke had
multiple infarcts in the brainstem, and the 3rd had bilateral border-zone infarcts.
The patients with brainstem infarcts died on postoperative days 7 and 15, and he
patient with border-zone infarct was discharged home with no symptoms 3
months after surgery. Univariate analysis revealed that patients with neurologic
deficits had significantly higher rates of history of hypertension, concomitant
coronary artery bypass grafting, cardiac ischemia times longer than 90 minutes,
and chronic renal failure. A multivariale logistic regression analysis revealed that
the significant preoperative variables associated with neurologic deficits were a
history of hypertension and a cardiac ischemia time longer than 90 minutes.
Deep hypothermic circulatory arrest is a safe and useful technique for protection
of he brain during surgery for complex aortic problems. in future, some patients
at extreme risk for perioperative neurologic complications might be offered
novel neuroprotective agents, in combination with deep hypothermia
Keywords: aneurysm/aorta/body temperature/BRAIN/brain
injuries/diagnosis/prevention & control/brain ischemia/brain/metabolism/bypass
grafting/cardiac/combination/complications/DETERMINANTS/dissecting/surger
y/EXCITATORY
AMINO-ACIDS/HEART/history/HUMANS/hypertension/hypothermia/ISCHE
MIA/neurologic dysfunction/NITRIC-
OXIDE/postoperative/predictors/protection/renal/renal
failure/residual/RETROGRADE CEREBRAL
PERFUSION/risk/STROKE/SURGERY/symptoms/TEMPERATURE/TEXAS/ti
ming
Keyser, A. (1991), Antiplatelet Agents and Secondary Stroke Prevention.
Tgo-Tijdschrift Voor Therapie Geneesmiddel en Onderzoek Jdr- Journal for
Drugtherapy and Research, 16 (4), 105-114.
Abstract: This review of the literature reports on secondary prevention of ischemic
stroke. The aim of secondary prevention is to protect patients who belong to a
risk-group from the occurrence of brain infarction. Symptomatic patients with a
demonstrated carotid artery stenosis of 70 percent and above, most probably will
benefit from carotid endarterectomy if performed by a skilled surgeon in the
absence of contraindications. Oral anticoagulant drugs do play a minor role in
medical prevention of brain infarction. Antiplatelet drugs, however, are in use for
almost two decades and (meta-) analysis of clinical trials points to acetylsalicylic
acid (ASA) as a drug with a modest but certain contribution of about 15% in the
endpoint reduction, even in lower dosages. The addition of dipyridamole (DP) to
the classic ASA dose appears to increase the end-point reduction to 30%. Neither
DP nor sulfinpyrazone (SP) as monotherapy have been demonstrated to be
efficaceous in the secondary prevention of ischemic stroke. Ticlopidine (TC)
seems a promising alternative for ASA in those patients that suffer adverse
effects from ASA. TC, however, itself has a number of different side effects that
limit its application. New clinical trials are under way in order to improve the
efficacy of drug treatment in the secondary prevention of brain infarction
Bambauer, R., Schiel, R. and Latza, R. (2001), Current topics on low-density lipoprotein
apheresis. Therapeutic Apheresis, 5 (4), 293-300.
Abstract: The prognosis of patients suffering from severe hyperlipidemia, sometimes
combined with elevated lipoprotein (a) (Lp[a]) levels, and coronary heart disease
(CHD) refractory to diet and lipid-lowering drug is poor. For such patients,
regular treatment with low-density lipoprotein (LDL) apheresis is the therapeutic
option. today, there are four different LDL- apheresis systems available:
immunoadsorption. heparin-induced extracorporeal LDL/fibrinogen precipitation,
dextran sulfate LDL-adsorption. and LDL-hemoperfusion. Despite substantial
progress in diagnostics. drug therapy. and cardiosurgical procedures,
atherosclerosis with myocardial infarction. stroke, and peripheral cellular disease
still maintains its position at the top of morbidity and mortality statistics in
industrialized nations. Established risk factors widely accepted are smoking,
arterial hypertension. diabetes mellitus, and central obesity. Furthermore, there is
a strong correlation between hyperlipidemia and atherosclerosis. Besides the
elimination of other risk factors, in severe hyperlipidemia (HLP) therapeutic
strategies should focus on a drastic reduction of serum lipoproteins. Despite
maximum conventional therapy with a combination of different kinds of
lipid-lowering drugs, however, sometimes the goal of therapy cannot be reached.
Mostly, the prognosis of patients suffering from severe HLP, sometimes
combined with elevated Lp(a) levels and CHD refractory to diet and
lipid-lowering drugs is poor. Hence. in such patients. treatment with
LDL-apheresis can be useful. Regarding the different LDL-apheresis systems
used, there were no significant differences with respect to the clinical outcome or
concerning total cholesterol. LDL, high-density lipoprotein, or triglyceride
concentrations. With respect to elevated Lp(a) levels, however. the
immunoadsorption method seems to be the most effective. The published data
clearly demonstrate that treatment with LDL-apheresis in patients suffering from
severe hyperlipidemia refractory to maximum conservative therapy is effective
and safe in long-term application
Keywords: ACE INHIBITORS/ANAPHYLACTOID
REACTIONS/ANGIOGRAPHICALLY ASSESSED TRIAL/arterial/arterial
hypertension/atherosclerosis/CARDIOVASCULAR-DISEASE/CHD/cholesterol
/combination/coronary heart disease/CORONARY
HEART-DISEASE/DEXTRAN SULFATE/dextran sulfate low-density
lipoprotein-adsorption/diabetes/diabetes
mellitus/diagnostics/diet/disease/drug/drug therapy/drugs/FAMILIAL
HYPERCHOLESTEROLEMIA/Germany/heart/heart
disease/HELP-LDL-APHERESIS/heparin-induced extracorporeal low-density
lipoprotein/fibrinogen precipitation/high density lipoprotein/HUMAN
WHOLE-BLOOD/hyperlipidemia/hypertension/immunoadsorption/infarction/L
DL/lipid lowering/lipid-lowering/lipoproteins/low density
lipoprotein/low-density lipoprotein apheresis/low-density
lipoprotein-apheresis/low-density
lipoprotein-hemoperfusion/morbidity/morbidity and
mortality/mortality/myocardial/myocardial
infarction/obesity/outcome/prognosis/risk/risk factors/SECONDARY
PREVENTION/serum/smoking/statistics/stroke/therapy/treatment
Jaeger, B.R., Kreuzer, E., Knez, A., Leber, A., Uberfuhr, P., Borner, M., Milz, P.,
Reichart, B. and Seidel, D. (2002), Case reports on emergency treatment of
cardiovascular syndromes through heparin-mediated low-density
lipoprotein/fibrinogen precipitation: A new approach to augment cerebral and
myocardial salvage. Therapeutic Apheresis, 6 (5), 394-398.
Abstract: We report the first experiences with HELP apheresis as an emergency
treatment for acute cardiovascular syndromes two patients who were not eligible
for lysis therapy and catheter intervention were treated with HELP apheresis
instead. Both patients had a most severe, generalized atherosclerosis and reached
the hospital too late for conventional measures. In both cases, the use of the
apheresis dramatically improved the clinical situation to such an extent that the
possibilities of this apheresis system urge further investigation
Keywords: acute/ANGIOGRAPHICALLY ASSESSED
TRIAL/atherosclerosis/cardiovascular/cerebral/CHOLESTEROL/CORONARY
HEART-DISEASE/FIBRINOGEN/fibrinolytic drugs/Germany/GIIb/IIIa
inhibitors/HELP/hospital/LDL- APHERESIS MULTICENTER/low-density
lipoprotein apheresis/myocardial/myocardial infarction/plasma
treatment/REDUCTION/SECONDARY
PREVENTION/stroke/therapy/treatment/unstable angina/use
Vanderlinde, F. (1981), Risk-Factors for Stroke and Implications for Prevention.
Therapeutische Umschau, 38 (8), 709-716
Chalon, S., Brudi, P. and Lechat, P. (1996), Treatment of essential hypertension:
Ongoing randomized controlled trials. Therapie, 51 (6), 631-638.
Abstract: In this review, the design and objectives of ongoing clinical trials in essential
hypertension are discussed along with the main results obtained from previously
published therapeutic trials. In a meta-analysis of 14 of the major primary
prevention trials in hyper tension, the difference in diastolic blood pressure
between the intervention groups and the control groups was only 5-6 mmHg.
This difference was associated with significant reductions in all stroke events (42
per cent), all coronary heart disease events (14 per cent) and in cardiovascular
mortality (21 per cent). In elderly hypertensive patients, available studies have
shown that antihypertensive treatment reduces the incidence of non-fatal
cardiovascular events without significantly modifying cardiovascular mortality.
Most of these results were obtained with beta- blockers or diuretics. Despite
official recommendation as first line monotherapy, none of the three new
antihypertensive classes has been shown to have beneficial effects on hard
primary endpoints such as cardiovascular morbidity and mortality. several
ongoing large scale randomized controlled trials vs. P-blockers or diuretics are
addressing this important issue. Moreover, other effects of antihypertensive
treatment such as the 'J-curve phenomenon', the rare of change in the carotid wall
thickness or the exact beneficial effects in elderly patients are being investigated
in some of these studies
Keywords: antihypertensive agents/antihypertensive
treatment/atheroma/ATHEROSCLEROSIS/blood
pressure/BLOOD-PRESSURE/cardiovascular events/cardiovascular
morbidity/cardiovascular mortality/carotid/clinical trials/control/coronary heart
disease/CORONARY-ARTERY
DISEASE/design/elderly/ENGLAND/FOLLOW-
UP/heart/HEART-DISEASE/hypertension/incidence/meta-analysis/morbidity/M
ORTALITY/prevention/primary
prevention/PROGRESSION/randomized/REGRESSION/stroke/treatment/trials
Barry, S. and Mercier, S. (1997), Antiplatelet agents and cardiovascular prevention.
Therapie, 52 (1), 53-58.
Abstract: The main contributions of meta-analysis methodology to antiplatelet therapy in
the field of cardiovascular prevention are presented with regard to the different
sectors of the health system: help with therapeutic information, help in the
planning of clinical trials for the pharmaceutical industry and help in
decision-making for Health Authorities. The results of meta-analysis of available
data concerning aspirin in cardio- vascular prevention are discussed, in an
attempt to define optimal daily dose and duration of aspirin treatment
Keywords: antiplatelet agents/antiplatelet therapy/ARTICLE/ASPIRIN/aspirin/aspirin
treatment/cardiovascular prevention/clinical
trials/CLINICAL-TRIALS/decision-making/DRUGS/ENGLAND/health/MEDI
CAL
LITERATURE/meta-analysis/METAANALYSES/methodology/prevention/RA
NDOMIZED CONTROL
TRIALS/STROKE/THERAPY/treatment/trials/USERS GUIDES/vascular
Bergmann, J.F., Kevorkian, J.P. and Chassany, O. (1998), Synthesis: certainties
uncertainties in the prevention of deep vein thrombosis in medical patients.
Therapie, 53 (6), 571-574.
Abstract: In medical patients there are numerous and variable risk factors for deep vein
thrombosis. Placebo-controlled clinical trials are rare. The efficacy of standard
heparin or low molecular weight heparin for the prevention of deep vein
thrombosis is clearly demonstrated for patients with recent myocardial infarction,
ischaemic stroke with hemiplegia or severe pulmonary sepsis with lung failure.
Pharmacological prophylaxis is probably also efficient in patients with a severe
actue disease and a certain history of deep vein thrombosis. For all other medical
and especially for bedridden elderly patients, use of low molecular weight
heparin might decrease the incidence of deep vein thrombosis but might not
modify the overall mortality. In these situations, placebo- controlled clinical
trials are needed for best evaluation of the benefit-risk ratio
Keywords: clinical trials/deep vein
thrombosis/elderly/ENGLAND/evaluation/hemiplegia/heparin/HEPARIN-PROP
HYLAXIS/history/incidence/infarction/ischaemic stroke/low molecular weight
heparin/medical patient/medical patients/mortality/myocardial/myocardial
infarction/prevention/prophylaxis/risk/risk factors/stroke/thrombosis/trials
McGregor, J., Berdeaux, A., Bonnet, J., Cambien, F., Fitzgerald, D., Lacolley, P., Lu, H.,
Narjoz, A.L., Miossec, P., Netter, P., Poston, R. and Laurent, S. (1998), Cell
adhesion molecules as pharmacological targets. Therapie, 53 (4), 371-379.
Abstract: This workshop intended to perform a "state-of-the art" of current research on
adhesion molecules in various pathophysiologies, and to determine
pharmacological targets. Indeed, recent important progress concerning the
cellular and molecular physiology of adhesion molecules led to the development
of various integrin antagonists in several domains, like cardiovascular disease,
inflammation and cancer. Integrins play a major role in numerous process like
embryonic development, tumor growth and metastasis, apoptosis, hemostasis,
leucocyte recruitment and activation, and bone resorption. The development of
integrin antagonists is well advanced in the cardiovascular domain, since the first
marketed drug (abciximas, Reopro(R)) is an antibody directed against the
GPIIb/IIIa complex (integrin alpha IIb/beta 3) involved in the final pathway of
platelet aggregation. Another active domain of research in pharmacology is
'cardioprotection', i.e. the prevention of cardiac damages induced by the
reperfusion of the coronary bed after an ischemia secondary to thrombolysis,
angioplasty, of coronary bypass. The pharmacological targets of these
antagonists are integrins involved in various process like leucocyte and platelet
adhesion and endothelial function. Other potential indications in the
cardiovascular field are restenosis after angioplasty, and atherosclerosis
Keywords: adhesion
molecules/aggregation/angioplasty/apoptosis/ARTERY/atherosclerosis/BLOOD-
VESSELS/bone disease/cardiovascular
disease/development/ENGLAND/EXTRACELLULAR-MATRIX/integrins/INT
EGRINS/ischemia/MYOCARDIAL-INFARCTION/pharmacology/platelet
aggregation/PLATELET GLYCOPROTEIN
IIIA/POLYMORPHISM/prevention/SIGNAL-
TRANSDUCTION/STROKE/thrombolysis/THROMBOSIS
Mismetti, P., Juillard-Delsart, D., Tardy, B., Laporte-Simitsidis, S. and Decousus, H.
(1998), Evaluation of the venous thromboembolic risk in medical patients.
Therapie, 53 (6), 565-570.
Abstract: The venous thromboembolic risk seems to be demonstrated in medical patients
since the incidence of symptomatic and symptomatic deep vein thrombosis
(DVT) without any prophylactic methods is respectively about 50 per cent in
stroke, 25 per cent in acute myocardial infarction (AMI) and 15 per cent in
internal medicine. A synthesis of clinical trials performed in medical patients
shows that prophylactic doses of heparins (unfractionated heparin or low
molecular weight heparins) reduce the incidence of DVT by 40 to GO per cent
compared with the lack of ano antithrombotic agents but without any significant
effect on total;mortality. Other antithrombotic agents such as antiplatelet agents
seem to reduce the incidence of DVT by about 40 per cent associated,vith a
significant decrease in total mortality of stroke or AMI. But the
recommendations made on the basis of these results have to be extremely
cautious since the number of medical patients included in clinical trials is quite
limited compared with the surgical area. Moreover, each of these
recommendations is not sufficiently proven. Thus more clinical trials have to be
carried out with a placebo control group in internal medicine and an aspirin
control group for stroke and AMI
Keywords: acute/acute myocardial infarction/antiplatelet/antiplatelet
agents/antithrombotic/aspirin/clinical trials/control/deep vein
thrombosis/DEEP-VEIN
THROMBOSIS/DVT/ENGLAND/heparin/heparins/incidence/infarction/medical
patients/mortality/myocardial/myocardial
infarction/PREVENTION/prophylaxis/risk/stroke/thrombosis/TRIAL/trials/unfra
ctionated heparin/WARFARIN
Aouizerate, P., Mabiala, H., Perrot, F. and Guizard, M. (1998), Preventive treatment of
thrombosis: Audit on heparin prescription. Therapie, 53 (2), 101-106.
Abstract: An audit has been carried out, in a French general hospital, studying the use of
heparins in preventive indications, to assess concordance between prescriptions
and thrombotic risk, before and one year after the diffusion of national guidelines.
Platelet monitoring frequency has also been studied. On a defined day, 550
patients were admitted, and 113 treated with preventive heparinotherapy (low
molecular-weight heparin: 98 per cent). 52.2 per cent of patients received a
correct regimen, while 4.4 per cent of underprescriptions and 43.4 per cent of
overprescriptions were observed. Platelet monitoring protocol was respected in
44 per cent of cases, while it was insufficient for 41 per cent and not carried out
in 15 per cent. The results of this study have been communicated to all the
prescriptors. Another audit done one year later showed that 81 per cent of doses
were adapted to the thrombotic risk, 2 per cent were too low, and 17 per cent too
high. The efficiency of this kind of process shows that it should be generalized to
all the sensitive therapeutic classes
Keywords: ACUTE STROKE/audit/CLINICAL-TRIALS/DEEP-VEIN
THROMBOSIS/ENGLAND/guidelines/heparin/hospital/LOW-DOSE
HEPARIN/MEDICAL INPATIENTS/MOLECULAR-WEIGHT
HEPARIN/prevention/risk/SPINAL-CORD INJURY/STANDARD
HEPARIN/thrombosis/TOTAL HIP-REPLACEMENT/treatment/VENOUS
THROMBOEMBOLISM
Plu-Bureau. (1999), Hormone replacement therapy and cardiovascular risk. Therapie, 54
(3), 375-380.
Abstract: Cardiovascular risk associated with hormone replacement therapy (HRT) has
been analysed by large epidemiological studies. This treatment has different
effects depending on the type of vessel (venous or arterial) or site (heart or brain).
The several meta-analyses which have been published conclude that there is a
significant decrease of about 30 to 50 per cent in ischaemic heart disease
associated with HRT. In addition, oestrogen replacement therapy is associated
with a 25 per cent decrease in cardiovascular mortality. A recent meta-analysis
has analysed the effect of HRT on cerebrovascular risk. A significant 20 per cent
increase in ischaemic stroke associated with the use of HRT has been shown.
However, a protective association of about 30 per cent has been observed in
haemorrhagic stroke with HRT use. Recent epidemiological studies have
suggested an increased risk of thromboembolic disease associated with HRT.
The results of a randomized blind placebo-controlled secondary prevention trial
have recently been published. In this clinical trial, women who receive oestrogen
(0.625 mg conjugated equine oestrogen daily) plus progestin (2.5 mg
medroxyprogesterone acetate daily) therapy did not experience a reduction in
overall risk of non-fatal myocardial infarction and cardiovascular heart disease
death. This treatment also significantly increases the rate of thromboembolic
events. Other randomized trials of HRT for primary prevention are scheduled to
yield results by 2000 or 2005. All these studies have been conducted essentially
in Anglo-Saxon countries and have analysed the effects of conjugated equine
oestrogens alone or combined with medroxyprogesterone acetate. This treatment
is not currently used in France. But no randomized trials are under way with the
HRT common in France (transdermic oestrogen combined with natural
progesterone). The effects of this treatment on cardiovascular disease remain
unknown
Keywords: brain/BREAST-CANCER/cardiovascular/cardiovascular
disease/cardiovascular mortality/cardiovascular
risk/cerebrovascular/CORONARY
HEART-DISEASE/ENGLAND/epidemiology/heart/hormone replacement
therapy/HRT/infarction/ischaemic heart disease/ischaemic
stroke/menopause/meta-analysis/mortality/myocardial/myocardial
infarction/POSTMENOPAUSAL WOMEN/PREVENTION/primary
prevention/randomized/RANDOMIZED TRIAL/randomized
trials/risk/secondary prevention/stroke/TAMOXIFEN/therapy/thromboembolic
events/thromboembolism/treatment/trials/USERS/VENOUS
THROMBOEMBOLISM/women
Lechat, P., Lardoux, H., Mallet, A., Sanchez, P., Derumeaux, G., Lecompte, T., Maillard,
L., Mas, J.L., Mentre, F., Pousset, F., Lacomblez, L., Pisica, G.,
Solbes-Latourette, S., Raynaud, P. and Chaumet-Riffaud, P. (2000),
Anticoagulant (fluindione)-aspirin combination in patients with high-risk atrial
fibrillation. A randomized trial (FFAACS). Therapie, 55 (6), 681-689.
Abstract: Background: A combination of low-dose aspirin (A) and anticoagulation (AC)
may provide better protection against thromboembolic events compared with AC
alone in high-risk patients with atrial fibrillation (AF). Methods: We performed a
multicentric placebo-controlled double blind-trial to test the preventive efficacy
against thromboembolic events of the addition of aspirin (A) (100 mg) or
placebo (P) to anticoagulant treatment in patients with high-risk atrial fibrillation.
A total of 157 patients were included, with atrial fibrillation and previous
thromboembolic event ol older than 65 years with either a history of
hypertension, a recent episode of heart failure or a left ventricular dysfunction.
All patients received fluindione (F) and P or F and A, with an INR target
between 2 and 2.6. The primary endpoint was a combined endpoint of stroke
(ischaemic or haemorrhagic), myocardial infarction, systemic arterial emboli or
vascular death. Results: The study had to be stopped prematurely owing to a too
low recruitment rate. During follow-up (0.84 years) 3 non-fatal thromboembolic
events were recorded (1P, 2A) and 6 patients died (3P, 3A), none of them from a
thromboembolic complication. However, 3 deaths were secondary to severe
haemorrhagic complications (1P, 2A). Non-fatal haemorrhagic complications
occurred more often in group A (n = 10, 13.1 pour cent) compared with group P
(n = 1, 1.2 pour cent), p = 0.003. Conclusion: The FFAACS study was not able
to show any of aspirin to anticoagulant therapeutic benefit from the addition in
patients with high-risk AF. Such a combination increased the incidence rate of
bleeding complications, which therefore greatly reduces its potential overall
benefit
Keywords: AF/anticoagulant/anticoagulant
treatment/anticoagulants/anticoagulation/ANTITHROMBOTIC
THERAPY/arterial/ASPIRIN/aspirin/atrial fibrillation/bleeding/bleeding
complications/combination/complications/death/emboli/ENGLAND/fibrillation/f
luindione/FLUINDIONE/heart/heart failure/HEART-VALVE
REPLACEMENT/high
risk/history/hypertension/incidence/infarction/INR/ischaemic/left ventricular/left
ventricular dysfunction/LONDON/myocardial/myocardial
infarction/PLACEBO/PREVENTION/primary/protection/randomized/randomize
d trial/recruitment/secondary/STROKE/thromboembolic
complications/thromboembolic
events/THROMBOEMBOLISM/treatment/trial/vascular/WARFARIN
Tzourio, C. (2002), Epidemiology and risk factors for stroke. Therapie, 57 (6), 569-576
Keywords:
AUCKLAND/DISEASE/HEALTH/HYPERTENSION/MORTALITY/NEW-ZE
ALAND/PREVENTION/risk/risk factors/risk factors for stroke/stroke
Bordet, R. (2002), Preventive neuroprotection: from experimental data to therapeutic
strategies. Therapie, 57 (6), 540-547.
Abstract: The concept of preventive neuroprotection is based on experimental concept of
brain ischemic tolerance in which a cerebral resistance against ischemia
consequences is induced prior to its occurence. Pharmacological agents
mimicking the biological mechanisms observed in brain ischemic tolerance
might increase the resistance of patients with high stroke risk to the deleterious
effects of brain ischemia. Activation of cytoprotective proteins or regulation of
deleterious molecular pathways could constitute the main pharmacological
targets to induce preventive neuroprotection. Several pharmacological agents
such as statins or fibrates have been demonstrated experimentally to induce a
preventive neuroprotection related to their pleiotropic anti-inflammatory and
antioxidant properties. In future, the prevention treatment of stroke occurrence
may be completed by preventive neuroprotective treatment. Moreover, some
drugs could have potentially both preventive and neuroprotective properties,
which are likely linked
Keywords: ACTIVATION/antioxidant/AUCKLAND/brain/brain
ischemia/cerebral/cerebral ischemia/drugs/experimental/fibrates/FOCAL
CEREBRAL-ISCHEMIA/inflammation/ischemia/ischemic/ischemic
tolerance/mechanisms/NEONATAL
RAT/neuroprotection/NEW-ZEALAND/NITRIC-OXIDE
SYNTHASE/POTENTIAL
MECHANISM/prevention/RAT-BRAIN/REDUCTASE
INHIBITORS/risk/statins/STROKE/SUPEROXIDE-DISMUTASE/TOLERANC
E/treatment
Leys, D. and Deplanque, D. (2003), Statins and stroke. Therapie, 58 (1), 49-58.
Abstract: An important issue for stroke prevention is the identification and treatment of
risk factors such as hypercholesterolaemia. The 4 reasons to test if the statins
have a role in stroke prevention are: (i) a statistical link between elevated low
density lipoprotein-cholesterol or decreased high density lipoprotein-cholesterol
and ischaemic stroke; (ii) a reduction in vascular risk with statins in randomised
trials in patients with coronary heart disease; (iii) evidence of a decreased plaque
progression under statins; and (iv) pooled analyses of primary and secondary
prevention trials showing that reduction of total serum cholesterol reduces the
incidence of stroke, especially with the highest rate of cholesterol reduction, and
in patients with the highest risk of stroke (i.e. with statins in secondary
prevention trials). The question of whether statins also have a neuroprotective
effect in humans and reduce the risk of post-stroke dementia remains unsettled
Keywords: AUCKLAND/AVERAGE CHOLESTEROL LEVELS/BRAIN ISCHEMIC
TOLERANCE/CAROTID ATHEROSCLEROSIS/cholesterol/COA
REDUCTASE INHIBITORS/COENZYME-A REDUCTASE/coronary heart
disease/CORONARY HEART-DISEASE/dementia/DENSITY-LIPOPROTEIN
CHOLESTEROL/disease/heart/heart
disease/humans/hypercholesterolaemia/incidence/ischaemic/ischaemic
stroke/NEW-ZEALAND/NITRIC-OXIDE
SYNTHASE/plaque/prevention/primary/primary and secondary
prevention/progression/risk/risk factors/RISK-FACTORS/secondary/secondary
prevention/serum/SERUM- CHOLESTEROL/statins/statistical/stroke/stroke
prevention/treatment/trials/vascular/vascular risk
Bordet, R., Gele, P., Deplanque, D. and Duriez, P. (2003), Lipid-lowering drugs: From
prevention to protection. Therapie, 58 (1), 69-76.
Abstract: Statins and fibrates have been demonstrated to prevent both cardiovascular
events and stroke. While this preventive effect was initially thought to be related
to their lipid-lowering effects, in particular hypocholesterolaemic effect, analysis
of primary and secondary prevention trials suggest that these preventive effects
could be partly independent of their effects on lipid disorders. The pleiotropic
effects, such as vascular, anti-inflammatory or anti-oxidants effects, were
described for both the statins and fibrates. In addition to the preventive effects,
these pleiotropic effects could partially explain the decrease in myocardial or
cerebral ischemia consequences in experimental models. These cellular
protective effects may have a therapeutic interest to decrease severity of stroke or
coronary acute syndrome. They could also explain the drugs' lipid-lowering
preventive effects independent of the treatment of lipid disorders. Beyond
vascular pathologies, the pleiotropic effects of lipid-lowering drugs could explain
their potentially beneficial effect in different diseases, such as dementia or cancer
Keywords: acute/antioxidants/AUCKLAND/AVERAGE CHOLESTEROL
LEVELS/cancer/cardioprotection/cardiovascular/cardiovascular
events/cerebral/cerebral ischemia/CEREBRAL-ISCHEMIA/COA REDUCTASE
INHIBITOR/coronary acute disorders/CORONARY
HEART-DISEASE/dementia/diseases/drugs/experimental/fibrates/ischemia/KA
PPA-B/lipid lowering/lipid-lowering/lipid-lowering
drugs/myocardial/neuroprotection/NEW-ZEALAND/NITRIC-OXIDE
SYNTHASE/PPAR-ALPHA/prevention/primary/primary and secondary
prevention/protection/secondary/secondary
prevention/severity/SMOOTH-MUSCLE
CELLS/STATINS/STROKE/stroke/treatment/trials/vascular
Corvol, J.C., Bouzamondo, A., Sirol, M., Hulot, J.S., Sanchez, P. and Lechat, P. (2003),
Differential effects of lipid-lowering therapies on stroke prevention: A
meta-analysis of randomised trials. Therapie, 58 (1), 37-48.
Abstract: Background: Previous overviews have suggested that the FIMG-CoA
reductase inhibitors (statins), but not other lipid lowering therapies (LLTs), may
reduce stroke incidence in coronary patients. Our objective was to investigate the
amplitude and sources of heterogeneity of LLT effects on stroke prevention.
Methods: A literature search was performed from 1966-2001 to identify all
English-language published trials testing LLT. We then conducted a
meta-analysis including randomised primary and secondary coronary heart
disease prevention trials, which tested statins, nonstatins, diet or other
interventions, and providing data on stroke incidence. Results: The overall meta-
analysis (38 individual trials, 83 161 patients, mean follow-up of 4.7 years)
showed a significant relative risk reduction (RRR) of strokes by LLTs of 17% (p
0) and no effect (RRR 15 min, 30 min after
clopidogrel and remained prolonged even after 24 h). ADP-induced platelet
aggregation was inhibited (more than 78%). Comparatively, aspirin had a
moderate and no dose- dependent effect. Aspirin 2.5 mg kg-1 (n = 6) abolished
cyclic flow reductions in 2 animals, CFR reoccurred spontaneously in one animal
and epinephrine restored it in a second animal. Aspirin 5 mg kg-1 (n = 6)
abolished cyclic flow reductions in only 3 animals and epinephrine always
restored it. Aspirin 100 mg kg-1 (n = 3) was unable to abolish cyclic flow
reductions. On the right femoral artery, aspirin did not significantly prevent
cyclic flow reductions which occurred in all animals after one (n = 14) or two
injuries (n = 1), except for one animal. Basal bleeding time was lengthened but it
shortened rapidly, reaching its basal value after 24 h. ADP-induced aggregation
was not significantly inhibited, whereas arachidonic acid induced aggregation
was always inhibited. Clopidogrel appears as a more potent antithrombotic drug
than aspirin in this model, in treating and preventing spontaneous or
epinephrine-induced cyclic flow reductions and lengthening bleeding time
Keywords: AGGREGATION/ASPIRIN/BLOOD/CANINE
CORONARY-ARTERIES/INHIBITION/PLATELET THROMBUS
FORMATION/PREVENTION/RATS/STROKE/TICLOPIDINE
Heptinstall, S., May, J.A., Glenn, J.R., Sanderson, H.M., Dickinson, J.P. and Wilcox,
R.G. (1995), Effects of Ticlopidine Administered to Healthy-Volunteers on
Platelet-Function in Whole-Blood. Thrombosis and Haemostasis, 74 (5),
1310-1315.
Abstract: Ticlopidine is thought to be a selective inhibitor of ADP- induced platelet
function. Here we have investigated the effects of ticlopidine on platelet function
in whole blood induced by ADP and by other platelet agonists. Whole blood was
used because it was considered that ADP derived from led cells might act
synergistically with other platelet agonists to enhance platelet responses, and that
ticlopidine might interfere with this process. Measurements were performed
using blood from 16 healthy volunteers before ticlopidine administration, after
taking ticlopidine 250 mg daily for 10 days, after taking ticlopidine 250 mg twice
daily for a further 10 days, and after 14 days off treatment. Ticlopidine proved to
be a very effective inhibitor of the platelet aggregation induced by ADP; it was
most effective in enhancing the reversibility of the aggregation response. The
drug modestly but significantly reduced streptokinase, adrenaline, collagen,
sodium arachidonate, PAF and U46619 - induced platelet aggregation. The drug
significantly reduced the extent of the release reaction (C-14-5HT release)
induced by ADP, streptokinase, PAF, ristocetin and sodium arachidonate, and
also reduced the extent of the synergistic C-14-5HT release induced by
combinations of ADP and PAF, ADP and adrenaline and PAF and adrenaline.
The various inhibitory effects of ticlopidine were evident after treatment with
250 mg daily but were more pronounced after 250 mg tn ice daily. AU values
had returned to normal after 14 days off treatment. Ticlopidine had no effect on
serum thromboxane B-2 production nor an several parameters of coagulation and
fibrinolysis. We conclude that ticlopidine is an effective inhibitor of
ADP-induced platelet aggregation and also the platelet aggregation and
C-14-5HT release induced in whole blood by a number of platelet agonists and
combinations of agonists. These latter effects are probably mainly via a selective
effect on ADP. The inhibitory effects of the drug are dose-related
Keywords:
ADENYLATE-CYCLASE/ADP/AGGREGATION/CLOPIDOGREL/coagulatio
n/platelet aggregation/PREVENTION/STROKE/ticlopidine/treatment
Bergmann, J.F. and Neuhart, E. (1996), A multicenter randomized double-blind study of
enoxaparin compared with unfractionated heparin in the prevention of venous
thromboembolic disease in elderly in-patients bedridden for an acute medical
illness. Thrombosis and Haemostasis, 76 (4), 529-534.
Abstract: A multicenter, randomized double-blind study compared in two parallel groups
the efficacy and safety of a low molecular weight heparin (LMWH) enoxaparin
20 mg once daily, with unfractionated heparin (UFH) 5000 IU twice daily,
administered subcutaneously for 10 days, in the prevention of venous thrombosis
disease in 442 hospitalized elderly patients bedridden for an acute medical illness.
The main efficacy endpoint was defined as the occurrence of venous thrombosis,
diagnosed by a daily fibrinogen uptake test, and/or documented clinical
pulmonary embolism. Intention-to-treat analysis of efficacy showed that the
incidence of venous thromboembolic events was low: 4.8% (10/207) in the
LMWH group (9 episodes of isotopic venous thrombosis and one of
scintigraphic pulmonary embolism), and 4.6% (10/216) in the UFH group (10
episodes of isotopic venous thrombosis). The two treatments were equivalent,
where equivalence was defined as a maximum difference of 7% between the two
groups (p = 0.0005). There were no significant differences in terms of safety
between the 216 patients in the LMWH group and the 223 patients in the UFH
group who received at least one injection of the randomized treatment. During
the study period, 15 patients (3.4%) died (7 in the LMWH group and 8 in the
UFH group): 2 sudden deaths, one in each group, including one case in which
pulmonary embolism could not be excluded since no autopsy was performed,
and 13 others deaths unrelated to the study treatments. Six patients (1.4%)
presented a bleeding complication: 2 (0.9%) in the enoxaparin group (one major
and one minor hemorrhage), and 4 (1.8%) in the UFH group (2 major and 2
minor hemorrhages). These results indicate that subcutaneous enoxaparin 20 mg
once daily for 10 days is as effective and well tolerated as subcutaneous UFH
5000 IU twice daily in the prevention of venous thromboembolic disease in
bedridden elderly in-patients presenting an acute medical illness
Keywords:
DEEP-VEIN-THROMBOSIS/DIAGNOSIS/DVT/elderly/EPIDEMIOLOGY/IN
PATIENTS/MOLECULAR-WEIGHT
HEPARIN/PROPHYLAXIS/RISK-FACTORS/STROKE/thrombosis/treatment/
TRIAL
Herbert, J.M., Bernat, A., Samama, M. and Maffrand, J.P. (1996), The antiaggregating
and antithrombotic activity of ticlopidine is potentiated by aspirin in the rat.
Thrombosis and Haemostasis, 76 (1), 94-98.
Abstract: Since ticlopidine specifically inhibits ADP-induced platelet aggregation
without affecting prostaglandin metabolism, it seemed interesting to evaluate the
effect of aspirin with regard to the antithrombotic efficacy of ticlopidine,
Ticlopidine was administered orally to rats alone or in combination with aspirin
and the efficacy of the association was determined in several experimental
models. A synergistic effect of the ticlopidine/aspirin association was
demonstrated with regard to ADP- and collagen-induced platelet aggregation
measured ex vivo but also in several experimental thrombosis models including
silk thread-induced thrombosis in an arteriovenous shunt, Mire coil-induced
thrombosis and In-111- labelled platelet deposition an the subendothelium
following air drying injury of the rat carotid artery. Similar results were obtained
with regard to myointimal proliferation following air-induced injury of the rat
carotid artery which occurred as a consequence of vascular injury, The
ticlopidine/aspirin combination showed only additive-type effects on bleeding
time prolongation induced by tail transection in the rat
Keywords:
ADP/aggregation/aspirin/BLEEDING-TIME/CLOPIDOGREL/INHIBITION/IN
VIVO/platelet
aggregation/PLATELETS/PREVENTION/RABBITS/rat/rats/STROKE/THRO
MBOSIS/ticlopidine
Koefoed, B.G., Gullov, A.L. and Petersen, P. (1997), Prevention of thromboembolic
events in atrial fibrillation. Thrombosis and Haemostasis, 78 (1), 377-381
Keywords: atrial fibrillation/CEREBRAL
BLOOD-FLOW/COAGULATION/COPENHAGEN/fibrillation/FIXED
MINIDOSE WARFARIN/PROPHYLAXIS/RISK/SPONTANEOUS ECHO
CONTRAST/STROKE/SURGERY/thromboembolic events/THROMBOSIS
Koefoed, B.G., Feddersen, C., Gullov, A.L. and Petersen, P. (1997), Effect of fixed
minidose warfarin, conventional dose warfarin and aspirin on INR and
prothrombin fragment 1+2 in patients with atrial fibrillation. Thrombosis and
Haemostasis, 77 (5), 845-848.
Abstract: The efficacy of conventional dose adjusted oral anticoagulation for stroke
prevention in patients with non-valvular atrial fibrillation is well-documented but
not considered ideal as primary antithrombotic treatment in elderly patients. The
antithrombotic effect of fixed minidose warfarin 1.25 mg/day alone or in
combination with aspirin 300 mg/day, of conventional dose adjusted warfarin
(INR 2.0-3.0), and of aspirin 300 mg/day have been investigated in outpatients
with chronic nonvalvular atrial fibrillation in the second Copenhagen Atrial
Fibrillation, Aspirin and Anticoagulant Therapy Study (AFASAK 2). In order to
investigate the effect on the coagulation system of the treatments, the
International Normalized Ratio of the prothrombin time (WR) and prothrombin
fragment 1+2(F1+2) were monitored at baseline and after three months of
treatment in 100 patients consecutively included in the trial. At baseline no
differences in INR and F1+2 between the four treatment groups were present.
After three months of therapy the level of INR increased significantly from
baseline in patients receiving warfarin in any dose and the level of F1+2
decreased significantly by combined minidose warfarin- aspirin and by dose
adjusted warfarin. When comparing the changes over time in F1+2 (three-month
value minus baseline value) during therapy with fixed minidose warfarin,
combined minidose warfarin-aspirin and aspirin alone no significant difference
between the groups was found. In conclusion, INR was changed by all three
warfarin regimens but only dose adjusted warfarin (INR 2.0-3.0) had a marked
effect on F1+2
Keywords: ANTICOAGULATION/antithrombotic/aspirin/atrial
fibrillation/COAGULATION/COPENHAGEN/elderly/fibrillation/INR/Internati
onal Normalized Ratio/oral
anticoagulation/prevention/PROPHYLAXIS/prothrombin time/STROKE/stroke
prevention/SURGERY/therapy/THROMBOSIS/treatment/warfarin
Herbert, J.M., Dol, F., Bernat, A., Falotico, R., Lale, A. and Savi, P. (1998), The
antiaggregating and antithrombotic activity of clopidogrel is potentiated by
aspirin in several experimental models in the rabbit. Thrombosis and
Haemostasis, 80 (3), 512-518.
Abstract: It is unknown whether the addition of aspirin might increase both the efficacy
and the potency of clopidogrel, a potent and selective ADP blocker. For that
purpose, the efficacy of clopidogrel (1-20 mg/kg, p.o.) administered orally to
rabbits alone or: in combination with aspirin (0.1-10 mg/kg, p.o.) was determined
in several experimental models. A potent synergistic effect of the
clopidogrel/aspirin association was demonstrated with regard to
collagen-induced platelet aggregation measured ex vivo. Similarly, aspirin
potentiated the antithrombotic activity of clopidogrel measured with regard to
experimental thrombosis induced by a silk thread or an stents placed in an
arteriovenous shunt, thrombus formation following electrical stimulation of the
rabbit carotid artery and with regard to In- 111-labeled platelet deposition on a
stent implanted in an arteriovenous shunt or on the subendothelium following air
drying injury of the rabbit carotid artery. A similar potentiating effect of aspirin
was obtained with regard io myointimal proliferation (restenosis) in the femoral
arteries of atherosclerotic rabbits which occurred as a consequence of stent
placement. The clopidogrel/aspirin combination showed only additive-h pe
effects on bleeding rime prolongation induced by ear transection in the rabbit,
therefore showing that combined inhibition of cyclooxygenase and ADP's effects
provide a marked enhanced antithrombotic efficacy, Such a combination may
provide substantial protection against platelet aggregation leading to thrombotic
occlusion at sites of endothelial injuries and coronary artery stenosis in humans
Keywords: ADP/aggregation/ANTIPLATELET/ARTERY/aspirin/BALLOON
ANGIOPLASTY/carotid/clopidogrel/formation/MULTICENTER/platelet
aggregation/PREVENTION/RAT/STENT
IMPLANTATION/stents/STROKE/thrombosis/thrombus/TICLOPIDINE/TRAN
S-LUMINAL ANGIOPLASTY
Feinberg, W.M., Macy, E., Cornell, E.S., Nightingale, S.D., Pearce, L.A., Tracy, R.P.
and Bovill, E.G. (1999), Plasmin-alpha(2)-antiplasmin complex in patients with
atrial fibrillation. Thrombosis and Haemostasis, 82 (1), 100-103.
Abstract: Plasmin-alpha(2)-antiplasmin complex (PAP) is an index of recent fibrinolytic
activity. We examined PAP levels in patients with atrial fibrillation (AF) to
determine whether these levels are correlated with clinical characteristics
associated with stroke risk. We obtained blood for measurement of PAP in a
non-random sample of 586 patients with AF on entering the Stroke Prevention in
Atrial Fibrillation ill Study. PAP levers were measured with an ELISA assay.
PAP Values were transformed with a natural logarithm (PAP(ln)) prior to all
analyses. Older age, female gender, recent congestive heart failure, decreasing
fractional shortening, recent onset of AF, and coronary artery disease were each
univariately associated with higher levels of PAP (all p 160 mm Hg, prior
thromboembolism, recent congestive heart failure, poor left ventricular function,
and women over age 75) had higher PAP levels than low-risk patients (antilog
mean PAP(ln) 5.6 vs 4.9, p 75 years of age (6 events, 5.1% per year) than in younger
patients (5 events, 1.0% per year). The cumulative incidence of major bleeding in
patients over 75 years of age (10.8%; 95% CI, 1.8-19.8) was significantly higher
than in younger patients (2.8%; 95% CI, 0.3-5.3, p = 0.006). Major primary
bleeding unrelated to organic lesions (7 patients, 1 male and 6 females) occurred
in 5 elderly patients (>75 years old) with a cumulative incidence (9.6%; 95% CI
0.8-18.4) significantly higher than in younger patients (1.2%; 95% CI, 0-3.0, p =
0.0003). Univariate analysis revealed a higher frequency of major primary
bleeding in females, in diabetic patients and in in those who had suffered a
previous thromboembolic event. Multivariate analysis revealed that only age
grater than 75 years was independently related to major primary bleedings (RR
6.6; 95% CI 1.2-37, p = 0.032). Minor bleedings (n = 27) were not more frequent
in elderly patients (6% vs 4% per year, p = ns). Patients were kept at optimal
intensity of treatment for 63% of the time. These data confirm the efficacy of OA
but identify elderly patients as a high risk group of major bleeding
Keywords: age/anticoagulant/anticoagulant
therapy/anticoagulants/anticoagulation/ASPIRIN/atrial
fibrillation/bleeding/clinical trials/cohort
study/COMPLICATIONS/death/elderly/elderly patients/fibrillation/FIXED
MINIDOSE WARFARIN/high
risk/HOSPITALS/incidence/INTENSITY/ischemic/ischemic
stroke/non-rheumatic atrial fibrillation/nonrheumatic/oral
anticoagulants/PREVENTION/primary/QUALITY/randomized/randomized
clinical trials/risk/safety/STROKE/stroke
prevention/therapy/THROMBOEMBOLISM/thrombosis/treatment/TRIAL/trials
/vascular
Bousser, M.G. (2001), Antithrombotic strategy in stroke. Thrombosis and Haemostasis,
86 (1), 1-7.
Abstract: Numerous randomised controlled trials have been devoted to antithrombotic
strategy in stroke, thus making evidence-based recommendations possible. The
use of antithrombotic drugs is crucial in the treatment of ischemic stroke though
often limited by the inherent risk of intra-cerebral bleeding. In the prevention of
stroke, the strategy depends on the underlying etiology: (i) antiplatelet drugs
(with aspirin as first choice) in atherothrombotic stroke, and (ii) oral
anticoagulants in cardioembolic stroke. In the acute treatment, the strategy
depends on whether IV rt-PA can be performed; if rt-PA is available and
approved, its use is recommended within 3 h of the onset of symptoms provided
there is strict adherence to the inclusion and exclusion criteria. In all other cases,
aspirin is the treatment of choice, associated with low dose LMWH in the event
of restricted mobility. There is no evidence for efficacy of high dose heparin (or
LMWH) in stroke, except in cerebral venous thrombosis
Keywords: ACETYLSALICYLIC-ACID/acute/ACUTE ISCHEMIC STROKE/acute
treatment/adherence/anticoagulants/antiplatelet/antiplatelet
drugs/antithrombotic/ASPIRIN/ATRIAL-FIBRILLATION/bleeding/cardioembo
lic/cardioembolic stroke/cerebral/cerebral
infarction/CEREBRAL-ISCHEMIA/drugs/etiology/FIRST-LINE
TREATMENT/HEPARIN/intracerebral/ischemic/ischemic stroke/mobility/oral
anticoagulants/prevention/RANDOMIZED CONTROLLED
TRIALS/risk/rtPA/SECONDARY
PREVENTION/stroke/symptoms/thrombolysis/THROMBOLYTIC
THERAPY/thrombosis/treatment/trials/use/venous thrombosis
Vanschoonbeek, K., Feijge, M.A.H., Keuren, J.F.W., Hemker, H.C., Lodder, J.J.,
Hamulyak, K., van Pampus, E.C.M. and Heemskerk, J.W.M. (2002),
Thrombin-induced hyperactivity of platelets of young stroke patients -
Involvement of thrombin receptors in the subject- dependent variability in Ca2+
signal generation. Thrombosis and Haemostasis, 88 (6), 931-937.
Abstract: Activated platelets are implicated in the development of premature arterial
vascular diseases, in particular ischemic stroke. Since elevated cytosolic [Ca2+](i)
is an integrative marker of platelet activation, we determined the generation of
Ca2+ signal in stimulated platelets from 26 young patients recuperating from
stroke, 20 patients with symptomatic peripheral arterial disease, and 56 healthy
volunteers. Even in the presence of aspirin, the platelets from various individuals
showed highly different thrombin-induced Ca2+ responses. On average, the
thrombin-induced Ca2+ responsemas increased for platelets from either patient
group in comparison to the controls (P 1.25) (= secondary ASA-nonresponder (SNR)). Single ASA
dosages of 500 mg or 200 mg were of identical effectiveness. Additional
administration of metoclopramide in combination with 100 mg ASA was more
effective as compared to a single dosage of 1000 mg ASA. Those who were SNR
at onset of ASA therapy remained SNR as well 28 days later. The change from a
normal, ASA corrected PR, to pathological PR values before a period of 12 hours
ended seemed a sudden and irreversible event that could only be corrected by the
next ASA application
Keywords: ACETYLSALICYLIC ACID DOSAGE/ASPIRIN/PLATELET
REACTIVITY/PREVENTION/STROKE/TRIAL
Dembinskakiec, A., Virgolini, I., Rauscha, F. and Sizinger, H. (1992), Ticlopidine and
Platelet-Function in Healthy-Volunteers. Thrombosis Research, 65 (4-5),
559-570.
Abstract: The influence of a 4-weeks therapy with 500 mg ticlopidine daily on platelet
function parameters was examined in 10 male healthy volunteers aged 20-33
years in order to extend the knowledge on the antiplatelet activity of this
substance. Ticlopidine significantly (p < 0.01) affected ex-vivo platelet
aggregation induced by ADP and increased platelet sensitivity to the
antiaggregatory action of PGI2. Generation of TXB2 from endogenous substrate
during spontaneous clotting of blood (serum-TXB2), conversion of exogenous
radio-labelled labelled arachidonic acid into TXB2 and MDA-formation in
isolated platelets were unaffected by the treatment. The TXB2- level in plasma of
volunteers, however, was decreased, after administration of the drug. The
diminished alpha-granule content liberation (beta-thromboglobulin: p < 0,01;
PDGF: p < 0.01; PF4 not significant) indicates that ticlopidine induces a
decrease in platelet activity. The beneficial effect on release reaction is not
associated with a decrease in TXA2-formation. Our results demonstrate that
ticlopidine inhibits platelet activity, especially the PDGF-release. These results
confirm the value of this drug in the prevention of atherosclerosis and its
thromboembolic complications
Keywords:
ACTIVATION/ASPIRIN/ATHEROSCLEROSIS/DOSE-LEVELS/DOUBLE-B
LIND/ISCHEMIC
HEART-DISEASE/MYOCARDIAL-INFARCTION/PLATELET DERIVED
GROWTH FACTOR/PLATELET
FUNCTION/PREVENTION/STROKE/THROMBOXANE-B2/TICLOPIDINE/
TRIAL
Grotemeyer, K.H., Scharafinski, H.W. and Husstedt, I.W. (1993), 2-Year Follow-Up of
Aspirin Responder and Aspirin Nonresponder - A Pilot-Study Including 180
Poststroke Patients. Thrombosis Research, 71 (5), 397-403.
Abstract: Aspirin is proposed to be effective in stroke-prophylaxis because it completely
inhibits the platelet prostanoid-pathway. In about 90% of stroke victims,
increased platelet reactivity (PR) can be reduced to the normal range by aspirin.
Twelve hours later, about one third of them show an enhanced PR again. These
patients are called secondary aspirin non responders (SANR). In this study the
potential pathogenetic and prognostic impact of this biological feature on stroke
recurrence was evaluated. Before discharge from the hospital, PR was
determined 12 hours after an oral administration of 500 mg aspirin in 180
patients aged 58 +/- 15 years; 74 were female and 106 male. All had suffered a
stroke in the internal carotid artery territory. Patients were treated with 3 x 500
mg aspirin/d and were followed up over a 24-month period. Major endpoints of
this study were stroke, myocardial infarction or vascular death. On discharge
from the hospital, 120 of the 180 patients showed a normal PR under aspirin
treatment. High test values were found in 60 patients (SANR). Six patients were
lost for follow-up. Because of side effects 36 (20%) of the 180 patients enrolled
discontinued medication. Major endpoints occurred in 4 of these 36 patients
(11%) and in 25 of the 138 remaining patients (18.1%); 19 patients died in
consequence of a vascular event during the observation period. Major endpoints
were seen in only 5 of 114 (4.4%) of the aspirin responders, but in 24 out of 60
SANR (40%, p < 0.0001). It may be assumed that early identification of SANR's
is a clinically useful tool to classify patients at high risk for recurrence of
vascular events. This may be an important step to a more effective prevention in
post-stroke patients
Keywords: ACETYLSALICYLIC ACID NONRESPONDER/ACID/PLATELET
REACTIVITY/PREVENTION/RANDOMIZED
TRIAL/STROKE/TICLOPIDINE
Fisher, T.C. and Meiselmann, H.J. (1994), Polymorphonuclear Leukocytes in Ischemic
Vascular-Disease. Thrombosis Research, 74 S21-S34.
Abstract: Over the last decade, an extensive amount of evidence has accumulated which
implicates PMN in the etiology and pathophysiology of ischemic/thrombotic
diseases. Tt has become apparent that PMN infiltration is not, as once thought,
an innocent secondary phenomenon following ischemia. Rather, PMN are active
participants in the pathophysiology of infarction, exacerbating the tissue damage.
Since the development of means to achieve reperfusion after thrombosis, this
phenomenon has become of critical importance. Many different approaches,
targeted at prevention of PMN trapping in the capillaries of the ischemic, area,
have been shown to effectively reduce the final infarct size, and will likely prove
valuable adjuncts to reperfusion. However, perhaps the most significant aspect of
the realization that PMN play a significant role in thrombotic disease may prove
to be the potential for early intervention: Elevated PMN counts are predictive of
ischemic events, and there is preliminary evidence that the elevated PMN count
may be also associated with increased PMN activation, suggesting that research
directed at the prophylactic use of anti-PMN agents might someday prove
effective in reducing the incidence of MI and stroke
Keywords: ACTIVATING- FACTOR PAF/ACUTE
MYOCARDIAL-INFARCTION/ANTIINFLAMMATORY
DRUGS/CULTURED ENDOTHELIAL-CELLS/DEPENDENT
DIABETES-MELLITUS/development/diseases/early
intervention/ENGLAND/etiology/incidence/ischemia/NEUTROPHIL
ELASTASE ACTIVITY/NO-REFLOW
PHENOMENON/PLATELETS/POLYMORPHONUCLEAR
LEUKOCYTES/prevention/SICKLE-CELL DISEASE/SKELETAL- MUSCLE
CAPILLARIES/stroke/thrombosis/TUMOR-NECROSIS-FACTOR/VASCULA
R DISEASE
Riess, H. and Riewald, M. (1994), The Clinical Impact of Platelet-Function Testing.
Thrombosis Research, 74 S69-S78
Keywords:
ACTIVATION/AGGREGATION/ATHEROSCLEROSIS/BLEEDING-TIME/C
OMPLICATIONS/ENGLAND/HEALTHY-SUBJECTS/LOW-DOSE
ASPIRIN/MYOCARDIAL-INFARCTION/PLATELET
AGGREGATION/PLATELET FUNCTION/PREVENTION/STROKE
Umemura, K., Ishihara, H. and Nakashima, M. (1995), Antiplatetlet Effects of
Clopidogrel in Rat Middle Cerebral- Artery Thrombosis Model. Thrombosis
Research, 80 (3), 209-216.
Abstract: We have developed a model whereby the middle cerebral artery (MCA) in an
experimental animal can be occluded by photochemical reaction between rose
bengal and green light which causes endothelial injury followed by platelet
adhesion, aggregation and formation of a platelet and fibrin-rich thrombus at the
site of photochemical reaction. Using this model, we investigated the effect of
clopidogrel, an analogue of ticlopidine which is a potent inhibitor of adenosine
5'- diphosphate (ADP)-induced platelet aggregation. Oral clopidogrel
(3-10mg/kg) inhibited ex-vivo platelet aggregation induced by ADP, thrombin or
the thromboxane A(2) mimetic, and U46619, when platelets had been primed
with low concentration of phorbol myristate acetate. At these doses, clopidogrel
significantly (P<0.001) prolonged the time to produce thrombotic occlusion of
the MCA and induced a significant (P<0.001) reduction in the size of ischaemic
cerebral damage examined 24 hours after photochemical reaction. The results
suggest that ADP has a key role in the thrombotic occlusion of the MCA in this
model. Clopidogrel may be beneficial in the prevention of arterial thrombosis
Keywords: ADP/AGGREGATION/animal/arterial
thrombosis/CLOPIDOGREL/ENGLAND/formation/MIDDLE CEREBRAL
ARTERY/platelet aggregation/PLATELET- AND FIBRIN-RICH
THROMBOSIS/platelets/PREVENTION/STROKE/thrombosis/thrombus/TICL
OPIDINE
Mieszczak, C. and Winther, K. (1996), Does Warfarin enhance platelet activity?
Thrombosis Research, 84 (4), 285-287.
Abstract: It has been shown in stroke patients with atrial fibrillation as well as those in
regular cardiacrhythm - that platelet aggregation is enhanced (1,2) Whether this
is a result of the disease itself or possibly a result of warfarin therapy, is not clear.
If the enhancement of platelet activation is indeed caused by Warfarin, this could
blunt the beneficial effect that warfarin exerts on stroke patients, and would
favour the addition of a platelet inhibitor. (3) To the best of our knowledge, the
impact of warfarin on platelet function has never been examined in healthy
human volunteers. The aim of the present study therefore was to test if warfarin
affects platelet aggregation induced by ADP, adrenaline and collagen
Keywords:
ADP/aggregation/anticoagulation/ASPIRIN/ATRIAL-FIBRILLATION/coagulat
ion/platelets/PREVENTION/stroke/THROMBOEMBOLIC
COMPLICATIONS/Warfarin
Lee, T.K., Chan, K.W.A., Huang, Z.S., Ng, S.K., Lin, R.T., Po, H.L., Yuan, R.Y., Lai,
M.L., Chang, T.W., Yan, S.H., Deng, J.C., Liu, L.H., Lee, K.Y., Lie, S.K., Sung,
S.M. and Hu, H.H. (1997), Effectiveness of low-dose ASA in prevention of
secondary ischemic stroke, the ASA Study Group in Taiwan. Thrombosis
Research, 87 (2), 215-224.
Abstract: This randomized double-blind controlled study was carried out to investigate
the effect of 100 mg acetylsalicylic acid(ASA) per day on the secondary
prevention of ischemic stroke. Patients who suffered a first ischemic stroke from
13 participating hospitals were enrolled. They were independent or only partially
dependent in activities of daily living and all had received brain CT for diagnosis.
Eligible patients were randomly allocated to the 100 mg ASA or the nicametate
citrate(a vasodilator) groups, and trial medications were started within three to
six weeks after the onset of stroke. The primary end point was cerebral
reinfarction, and intracranial hemorrhage was classified as an adverse event.
Four hundred and sixty-six patients participated in this study; and 222 cases (136
males and 86 females) were allocated to the ASA group while 244 cases (150
males and 94 females) were assigned to the nicametate group. No significant
difference in baseline characteristics between the two groups was observed.
Cerebral reinfarction developed 6.3% (14/222) in the ASA group and 11.9%
(29/244) in the nicametate group. According to the Cox's proportional hazards
model, the estimated risk ratio (ASA group vs. nicametate group) was 0.538,
with a 95% confidence interval of 0.284-1.019. The result was of borderline
statistical significance. The risk for cerebral reinfarction was reduced by almost
50% among those who took 100 mg ASA versus those who took nicametate. (C)
1997 Elsevier Science Ltd
Keywords:
ACETYLSALICYLIC-ACID/ACTIVATION/AGGREGATION/aspirin/ASPIRI
N/brain/cerebral/CEREBRAL ISCHEMIA/Chinese/clinical
trials/CT/diagnosis/ENGLAND/hemorrhage/ischemic/ischemic
stroke/PLATELET-FUNCTION/prevention/randomized/risk/secondary
prevention/stroke/stroke prevention/TRIAL
Yang, L.H., Hoppensteadt, D. and Fareed, J. (1998), Modulation of vasoconstriction by
clopidogrel and ticlopidine. Thrombosis Research, 92 (2), 83-89.
Abstract: Clopidogrel is an antiplatelet drug which has undergone extensive clinical
trials in the management of stroke and other arterial disorders related to platelet
activation. This agent is believed to produce the inhibition of ADP mediated
direct and indirect actions leading to platelet adhesion/aggregation and other
activation processes. Several other observed pharmacologic actions suggest that
this drug may have additional sites of action. Ticlopidine also belongs to the
same class of ADP receptor inhibitors and is extensively used for stroke
prevention. To study the vasomodulatory action of clopidogrel and ticlopidine,
the drugs were administered intravenously into canines at a dose of 10 mg/kg.
Thirty minutes later femoral and pulmonary arteries were removed and taken for
isolated tissue preparations. The intravenous injection of clopidogrel and
ticlopidine caused significant vasomodulatory actions in both femoral and
pulmonary ring preparations showing a marked desensitization to serotonin,
endothelin-1, serum, and platelet rich plasma/arachidonic acid mixtures. In
contrast, when the drugs were added directly to the organ bath containing
femoral or pulmonary ring preparations from untreated animals, both clopidogrel
and ticlopidine did not produce any effect on contractile response induced by
serotonin, endothelin-1, serum, and platelet rich plasma/arachidonic acid
mixtures. These data suggest that endogenous transformation of clopidogrel and
ticlopidine plays an important role in producing their vasomodulatory actions.
Furthermore, these observations indicate that both clopidogrel and ticlopidine
also modulate the vascular sites which may be contributory to the observed
clinical effects. (C) 1998 Elsevier Science Ltd
Keywords: activation/ADP/ADP receptor/ADP receptor
antagonist/ANTIAGGREGATING ACTIVITY/ANTIPLATELET
THERAPY/ASPIRIN/BINDING/canine smooth muscle
preparation/CEREBROVASCULAR-DISEASE/clinical
trials/clopidogrel/ENGLAND/prevention/RAT PLATELETS/stroke/stroke
prevention/THROMBOSIS/ticlopidine/trials/vascular
Patrono, C. (1998), Prevention of myocardial infarction and stroke by aspirin: Different
mechanisms? Different dosage? Thrombosis Research, 92 (1), S7-S12.
Abstract: More than 50 randomized trials have documented the efficacy and safety of
aspirin as an antiplatelet agent and a cardiovascular drug. However, the optimal
dose for preventing coronary and cerebral thrombosis has long been a cause of
debate, For patients with ischaemic heart disease the range recommended for the
prevention of a secondary event, based on strong clinical evidence, is 75-160 mg
aspirin/day. For patients with cerebrovascular disease, recommendations range
from 30-1300 mg/day, If these patients require a higher dose of aspirin it
suggests that a different mechanism of action is involved. This paper considers
hypotheses and reports the findings of recent clinical trials. The SALT study
compared aspirin with placebo in 1360 patients with TIA or minor ischaemic
stroke. It showed an 18% reduction in the risk of stroke or death in patients
receiving 75 mg aspirin/day, Five other trials of 55,000 patients with ischaemic
cerebrovascular disease compared the protective effect of aspirin (range 30-300
mg/day) with placebo, clopidogrel, or oral anticoagulants, Aspirin was better
than placebo, safer than oral anticoagulants, and no different from clopidogrel,
The implications of these findings are discussed. Mechanistic studies and
randomized clinical trials strongly suggest that the mechanism of action and dose
requirement of the antithrombotic effect of aspirin in patients with
cerebrovascular dis ease is the same as that for ischaemic heart disease, (C) 1998
Elsevier Science Ltd
Keywords: ACUTE ISCHEMIC STROKE/anticoagulants/aspirin/cerebrovascular
disease/clinical
trials/clopidogrel/dipyridamole/DISEASE/ENGLAND/HEALTHY-
SUBJECTS/heart/INHIBITION/LOW-DOSE ASPIRIN/myocardial
infarction/PLATELET ACTIVATION/prevention/PROSTAGLANDIN
SYNTHESIS/randomized trials/risk/safety/SALT/SECONDARY
PREVENTION/stroke/THERAPY/thrombosis/TIA/ticlopidine/trials/UNSTABL
E ANGINA
Dippel, D.W.J. (1998), The Results of Caprie, Ist and Cast. Thrombosis Research, 92 (1),
S13-S16.
Abstract: The role of aspirin in the secondary prevention of ischaemic events is being
challenged. CAPRIE, a blinded multicenter randomized trial of over 19000
patients followed for 1-3 years, assessed the effect of clopidogrel in the
secondary prevention of major vascular events. Patients with a recent myocardial
infarction, stroke or peripheral arterial disease were randomized to treatment
with clopidogrel or aspirin. Clopidogrel was associated with a statistically
significant, overall 8.7%, relative reduction in the risk of ischaemic events, but
the direction and size of the effect was not homogeneous with respect to three
predefined clinical subgroups. Clopidogrel may be slightly better in preventing
major ischaemic events in high-risk patients, but the results of CAPRIE suggest
that there is room for doubt. It remains to be seen whether treatment with
clopidogrel is cost-effective compared with aspirin. However, aspirin may still
be of value in the early treatment of acute stroke. IST was a 20,000 patient,
randomized, open-label study of aspirin plus heparin or neither in patients with
acute ischaemic stroke that should be treated in 48 hours. There was a small but
statistically nonsignificant reduction in mortality and disability at 6 months for
patients allocated to early treatment with aspirin compared with those who were
scheduled to avoid aspirin in the first 2 weeks after the stroke. Similar results
were seen in CAST, a double-blind trial of aspirin vs, placebo in patients with
suspected ischaemic stroke treated within 48 hours. A meta-analysis of the
results of IST, CAST and MAST-I showed a statistically significant effect of
early aspirin treatment. The role of aspirin in the treatment of acute stroke within
48 hours appears to be established. (C) 1998 Elsevier Science Ltd
Keywords: ACUTE ISCHEMIC
STROKE/ASPIRIN/aspirin/clopidogrel/ENGLAND/heparin/ischaemia/mortality
/myocardial infarction/Netherlands/PLATELET
ACTIVATION/prevention/risk/secondary
prevention/stroke/TICLOPIDINE/treatment/vascular
Morishita, K. and Iwamoto, M. (1998), Synergistic antithrombotic effects of argatroban
and ticlopidine in the rat venous thrombosis model. Thrombosis Research, 92 (6),
261-266.
Abstract: Argatroban, a synthetic thrombin inhibitor, and ticlopidine, an anti-platelet
agent, are major antithrombotic agents. We investigated the antithrombotic
effects of a combination of argatroban and ticlopidine in the rat venous
thrombosis model. Argatroban or ticlopidine inhibited thrombus formation in a
dose-dependent manner; 50% inhibition (ED,) is obtained with 1.0 mg/kg/h
(infusion) argatroban or 30 mg/kg (p.o.) ticlopidine. The combination of
argatroban and ticlopidine inhibited thrombus formation in a dose-dependent
manner; ED50 is obtained with 0.25 mg/kg/h argatroban plus 10 mg/kg
ticlopidine and 0.5 mg/kg/h argatroban plus 3 mg/kg ticlopidine, whereas 0.5
mg/kg/h argatroban alone or 10 mg/kg ticlopidine alone had negligible effect
(<20% inhibition). Isobole analysis showed that the antithrombotic effects of the
combination of argatroban and ticlopidine involved synergism with potentiation.
In contrast, the combination of argatroban and ticlopidine did not prolong the
bleeding time synergistically. These data showed that the combination therapy of
argatroban and ticlopidine should be clinically beneficial, but the different
administration route may restrict the clinical usage. (C) 1998 Elsevier Science
Ltd
Keywords: anticoagulant/argatroban/bleeding
time/BRAIN-DAMAGE/ENGLAND/experimental venous
thrombosis/formation/INHIBITOR/NO-805/PREVENTION/rat/STROKE/throm
bin inhibitor/thrombosis/thrombus/ticlopidine/VEIN/venous thrombosis
Forbes, C.D. (1998), Secondary stroke prevention with low-dose aspirin, sustained
release dipyridamole alone and in combination. Thrombosis Research, 92 (1),
S1-S6.
Abstract: Patients who had survived a stroke or transient ischaemic attacks (TIA) were
admitted to a trial of low-dose aspirin (50 mg) alone, sustained release
dipyridamole (400 mg/day) alone, or a combination of the two agents, and results
compared with a placebo over 24 months. This low-dose aspirin regimen
produced in pairwise comparisons a significant risk reduction of 18% for stroke,
13% for stroke and/or death but no reduction in all cause mortality. The
sustained release dipyridamole produced a significant risk reduction of 16% for
stroke, 15% for stroke and/or death but no significant reduction of mortality. In
combination, aspirin and dipyridamole produced a risk reduction of 37 % in
stroke, 24% in stroke and/or death, and no reduction in mortality. Similar
findings were found in TIA, which was a secondary endpoint. These results are
highly significant in comparison with placebo. As expected, there were enhanced
reports of alimentary side-effects in the aspirin groups and also enhanced
bleeding. Dipyridamole was associated with a slight increase in headache, which
resolved in most patients if therapy was continued. The conclusions are that 50
mg/day of aspirin alone or 400 mg/day of sustained release dipyridamole alone
are equally effective in stroke and TIA prevention. When used in combination
the effects were additive and were significantly more effective than the single
agents. (C) 1998 Elsevier Science Ltd
Keywords: ACETYLSALICYLIC-ACID/aspirin/dipyridamole/drug
combination/ENGLAND/ischaemia/mortality/prevention/risk/stroke/stroke
prevention/TIA/transient
Wade, W.E. (1998), Cost-effectiveness of venous thrombosis prophylaxis following
ischemic stroke: An assessment of currently available literature. Thrombosis
Research, 89 (4), 199-202
Keywords: cost/DEEP-VEIN THROMBOSIS/DOUBLE-BLIND/ENGLAND/ischemic
stroke/LOW-DOSE
HEPARIN/ORG-10172/PREVENTION/prophylaxis/stroke/thrombosis/thrombos
is prophylaxis/venous thrombosis
Kohda, N., Tani, T., Nakayama, S., Adachi, T., Marukawa, K., Ito, R., Ishida, K.,
Matsumoto, Y. and Kimura, Y. (1999), Effect of cilostazol, a phosphodiesterase
III inhibitor, on experimental thrombosis in the porcine carotid artery.
Thrombosis Research, 96 (4), 261-268.
Abstract: Thrombus formation in the carotid artery is one of the common causes of
transient ischemic attacks and stroke. Platelet aggregation seems to be an
essential component in these processes. The present study was conducted to
determine the ability of cilostazol, a phosphodiesterase III inhibitor, to prevent
formation of totally occlusive thrombus in a porcine carotid artery, in
comparison with ticlopidine. Castrated male Yorkshire pigs were allocated to
control(n = 8), cilostazol (30 mg/kg, twice a day [b.i.d] for 2 days, n = 8), and
ticlopidine (50 mg/kg, b.i.d. for 3 days, n = 7) groups. The endothelium of the
right common carotid artery was injured with electrical stimulation (150 mu A)
without constriction and blood flow in this region was monitored by Doppler
flow probe. Arterial blood was sampled during electrical stimulation for the
measurement of platelet aggregation. Total occlusion rates within 240 minutes
were 87.5% (7.8), 37.5% (3:8), and 85.7% (6:7) in the control, cilostazol, and
ticlopidine groups, respectively. Compared with the control group, the time to
total occlusion was significantly prolonged in the cilostazol group, but not in the
ticlopidine group. Consistently, platelet aggregation was significantly inhibited
only in the cilostazol group. Because ticlopidine increases blood flow in the
intact carotid artery before injury to a greater extent than cilostazol, direct
antiplatelet action is thought to be responsible for cilostazol's beneficial effect in
preventing thrombotic occlusion. These results suggest that cilostazol may be
useful for the inhibition of the thrombus formation in the carotid artery and for
the prevention of cerebral ischemic events. (C) 1999 Elsevier Science Ltd. All
rights reserved
Keywords: aggregation/ANTAGONIST/carotid/carotid
artery/cerebral/cilostazol/control/Doppler/endothelium/ENGLAND/formation/IN
TERMITTENT CLAUDICATION/ischemic/platelet
aggregation/PREVENTION/RETHROMBOSIS/STROKE/thrombosis/thrombus/
TICLOPIDINE/transient/transient ischemic attacks/TRIAL
Agnelli, G. and Sonaglia, F. (2000), Prevention of venous thromboembolism.
Thrombosis Research, 97 (1), V49-V62.
Abstract: Venous thromboembolism is the most common cause of preventable death
among hospitalised patients. Systematic prophylaxis with antithrombotic agents
in patients at risk for venous thromboembolism is the most effective approach to
reduce morbidity and mortality. Despite this evidence, antithrombotic
prophylaxis is still underused, due to the underestimation of incidence of venous
thromboembolism and to the unjustified fear of bleeding complications. Both the
characteristics of the individual patient and the clinical setting contribute to the
definition of the risk for venous thromboembolism. Patient- related risk factors
include clinical and molecular abnormalities. The grade of risk for venous
thromboembolism is defined better by the clinical setting than by the patient
characteristics. Prophylactic studies have been extensively carried out in surgical
patients and, only more recently, in medical patients. Prophylactic methods
include pharmacological agents, such as heparin, low molecular weight heparins,
warfarin, and hirudin, as well as mechanical methods such as compression
stockings and intermittent pneumatic compression. (C) 2000 Elsevier Science
Ltd. All rights reserved
Keywords: ACUTE ISCHEMIC STROKE/antithrombotic/bleeding/BLIND
RANDOMIZED TRIAL/complications/death/deep vein
thrombosis/DEEP-VEIN-THROMBOSIS/ENGLAND/FATAL
PULMONARY-EMBOLISM/GRADUATED COMPRESSION
STOCKINGS/heparin/heparins/hirudin/incidence/low molecular weight
heparin/LOW-DOSE HEPARIN/LOW-MOLECULAR-WEIGHT/MAJOR
ABDOMINAL- SURGERY/medical
patients/morbidity/mortality/prophylaxis/pulmonary embolism/risk/risk
factors/thromboembolism/TOTAL
HIP-REPLACEMENT/UNFRACTIONATED HEPARIN/venous
thromboembolism/warfarin
Ringelstein, E.B. and Nabavi, D. (2000), Long-term prevention of ischaemic stroke and
stroke recurrence. Thrombosis Research , 98 (3), V83-V96.
Abstract: Stroke is the third most important cause of mortality, but the leading cause of
severe handicap, dependency, and loss of social competence, Because of the high
recurrence rate, active secondary prevention is mandatory once a stroke has
occurred. Secondary prevention of stroke implies the primary prevention of
cardiovascular disorders as well. Among the modifiable risk factors hypertension
is worst and should be normalized according to recent WHO criteria, also in the
elderly. Smoking is another major risk factor and hard to delete. Diabetes
mellitus and hyperlipidaemia are also important risk factors and should be treated
consequently by diet and medication. Moderate alcohol intake, normalization of
body weight and regular physical activity also contribute considerably to
prevention of stroke. Whether hyperhomocysteinaemia should be normalized has
not yet been clarified. Cardiovascular disorders are an important source of
ischemic strokes, particularly atrial fibrillation. Low dose anticoagulation can
dramatically reduce stroke risk. Carotid endarterectomy in symptomatic stenoses
is the most expensive means of stroke prevention. In less severe stenoses, or ICA
occlusions, antiplatelet agents are the treatment of choice. Composite drugs with
ASS and other antiplatelet agents seem to be superior to either compound alone,
Dissections of the cervical arteries should not be operated on but may be treated
by anticoagulation or antiplatelet agents in the acute and subacute phase. The
potency of a consequent and comprehensive stroke prevention in preventing
disability and death is much greater than any sophisticated acute stroke treatment.
(C) 2000 Elsevier Science Ltd. All rights reserved
Keywords: acute/acute stroke/acute stroke
treatment/alcohol/anticoagulation/antiplatelet/antiplatelet
agents/arteries/ASS/atrial fibrillation/ATRIAL SEPTAL
ANEURYSM/cardiovascular/CAROTID-ARTERY
STENOSIS/death/diet/disability/drugs/elderly/endarterectomy/ENGLAND/FAC
TOR-V-LEIDEN/fibrillation/Germany/HONOLULU-HEART-PROGRAM/hype
rlipidaemia/hypertension/ischaemic stroke/ischemic/ISOLATED SYSTOLIC
HYPERTENSION/MIDDLE-AGED MEN/MODERATE
ALCOHOL-CONSUMPTION/mortality/PATENT FORAMEN
OVALE/physical activity/prevention/primary/primary
prevention/recurrence/risk/risk factor/risk factors/RISK-FACTORS/secondary
prevention/stroke/stroke prevention/stroke recurrence/stroke
treatment/treatment/US MALE PHYSICIANS
Wu, T.H., Chen, T.H.H. and Lee, T.K. (2000), Factors affecting the first recurrence of
noncardioembolic ischemic stroke. Thrombosis Research, 97 (3), 95-103.
Abstract: Studies of the factors affecting the first recurrence of ischemic stroke have
reported inconsistent findings. Types of initial stroke and the racial differences in
study samples are among the explanations that may account for this
inconsistency. The aims of this study were to estimate the cumulative recurrence
rates of noncardioembolic ischemic stroke and identify the factors that influence
the first recurrence of noncardioembolic ischemic: stroke in the Taiwanese
Chinese population. Four hundred and sixty-six patients with noncardioembolic
ischemic stroke from thirteen hospitals in Taiwan were, followed up in this study
to ascertain first recurrence of noncardioembolic ischemic stroke between
October 1992 and April 1995. The Kaplan-Meier method was used to estimate
the cumulative recurrence rate. The Cox regression model was used to ascertain
the significant factors affecting the first recurrence of noncardioembolic ischemic
stroke. The overall cumulative recurrence rate was 10.5% (49/466) from the
fellow-up period of 30 months. After adjustment for age, sex, treatment modes,
and variables pertinent to blood pressure, the site of brain lesion remained a
significant factor. The relative risk of first recurrence for the basal ganglion vs.
the region of middle cerebral artery was 3.06 (95% CI: 1.29- 7.26). The brain
lesion site was demonstrated to be an independent predictor of risk for the first
recurrence of noncardioembolic ischemic stroke among the Taiwanese Chinese
population. Whether this finding was also seen in other populations should be
corroborated in future research. (C) 2000 Elsevier Science Ltd. All rights
reserved
Keywords: age/blood pressure/brain/cerebral/cerebral artery/CEREBRAL
INFARCTION/Chinese/COMMUNITY/DISEASE/ENGLAND/hospitals/ischem
ic/ischemic stroke/middle cerebral artery/MORTALITY/noncardioembolic
stroke/population/PREDICTORS/PREVENTION/PROGNOSIS/PROJECT/racia
l differences/recurrence/relative risk/risk/risk
factors/RISK-FACTORS/sex/stroke/SURVIVAL/treatment
Horisawa, S., Kaneko, M. and Sakurama, T. (2001), Protective effects of SM-20302, an
orally active GPIIb/IIIa antagonist, in an ADP/epinephrine-induced guinea pig
model of transient cerebral ischemia. Thrombosis Research, 101 (3), 119-126.
Abstract: The potential benefits of SM-20302, (2S)-3-(3-(4-
amidinobenzoylamino)propanoylamino)-2-(4-
ethyl)benzensulfonylaminopropionic acid hydrochloride, a nonpeptide GPIIb/IIIa
receptor antagonist, were compared with those of aspirin and ticlopidine in a
transient cerebral ischemia model in guinea pigs. Transient cerebral ischemia
was induced in guinea pigs by an infusion of ADP/epinephrine into the left
internal carotid artery. Each compound was orally administered 1 h (SM-20302
and aspirin) or 3 h (ticlopidine) before the ADP/epinephrine infusion. The
ischemic area in coronal brain slices was assessed 1 min after the cessation of
ADP/epinephrine infusion by a carbon black perfusion method, in a separate
experiment, neurological deficits and lactate contents of ipsilateral hemispheres
were evaluated 60 min after the cessation of ADP/epinephrine infusion by
neurological scores and the standard enzymatic method, respectively. SM- 20302
(0.3 and 1 mg/kg po) significantly reduced the ischemic area, neurological
deficits and lactate contents in comparison with the vehicle control. Aspirin (100
mg/ kg po) had no significant effect on either parameter. Ticlopidine (300 mg/kg
po) reduced the lactate content. Although a combination of aspirin (100 mg/kg
po) and ticlopidine (300 mg/kg po) also reduced the lactate content, no additive
effect was observed. These results suggest that SM-20302 is of potential clinical
benefit in the treatment of thromboembolic diseases. (C) 2001 Elsevier Science
Ltd. All rights reserved
Keywords: ASPIRIN/brain/carotid/carotid artery/carotid artery
thrombosis/cerebral/cerebral
ischemia/combination/control/diseases/ENGLAND/GLYCOPROTEIN
IIB/IIIA/GPIIb/IIIa/GPIIb/IIIa receptor antagonist/INHIBITION/internal carotid
artery/ischemia/ischemic/Japan/OCCLUSION/platelet
aggregation/PLATELETS/PREVENTION/RECEPTOR
ANTAGONIST/SM-20302/STROKE/THROMBOSIS/TICLOPIDINE/transient/
treatment
Ginsberg, J.S., Bates, S.M., Oczkowski, W., Booker, N., Magier, D., MacKinnon, B.,
Weitz, J., Kearon, C., Cruickshank, M., Julian, J.A. and Gent, M. (2002),
Low-dose warfarin in rehabilitating stroke survivors. Thrombosis Research, 107
(6), 287-290.
Abstract: Background: Patients undergoing rehabilitation after thromboembolic stroke
have a relatively high incidence of venous thromboembolism (VTE). Warfarin,
with a target international normalized ratio (INR) of 2.0-3.0 is effective for the
prevention of VTE. However, because stroke is a major risk factor for bleeding
with warfarin, a less intense regimen (target INR < 2.0), might safely prevent
VTE in stroke rehabilitation patients. Methods: This study was a randomized,
double-blind, placebo-controlled trial of 2 mg of warfarin in patients undergoing
rehabilitation following completed stroke. The major efficacy endpoint. was
symptomatic, objectively proven VTE or asymptomatic VTE detected by
monthly duplex ultrasonography (DU) of the proximal leg veins or mandatory
bilateral contrast venography performed at the end of the study. The major safety
endpoint was bleeding. Results: There were 475 patients screened for enrollment,
355 had one or more exclusion criterion, and 17 had previously undetected
proximal DVT on admission. Of the 103 eligible and consenting patients, 56
received warfarin and 47 received placebo. Of the randomized patients, 88 had
successful venography (47 warfarin and 41 placebo). In the warfarin group, three
(8%) patients had DVT and one (2%) had proximal DVT whereas in the placebo
group, seven (20%) had DVT and five (13%) had proximal DVT. The risk ratio
for any DVT in warfarin-treated patients relative to placebo-treated patients was
0.39 (95% confidence interval (CI), 0.13-1.37). For proximal DVT, the risk ratio
was 0.17 (95% CI, 0.01-1.4). No patients suffered major bleeding. Conclusions:
A fixed dose of 2 mg of warfarin per day in patients undergoing stroke
rehabilitation is safe and associated with a relative risk reduction of about 80% in
the incidence of proximal DVT and 60% in overall DVT. (C) 2002 Elsevier
Science Ltd. All rights reserved
Keywords: asymptomatic/bleeding/BLIND RANDOMIZED TRIAL/DEEP VENOUS
THROMBOSIS/DIAGNOSIS/duplex/DVT/ENGLAND/incidence/INR/internati
onal normalized ratio/PREVENTION/randomized/rehabilitation/relative
risk/risk/risk
factor/safety/stroke/SURGERY/thromboembolic/THROMBOEMBOLISM/trial/
ultrasonography/VEIN THROMBOSIS/venous thromboembolism/warfarin
Yasaka, M., Sakata, T., Minematsu, K. and Naritomi, H. (2002), Correction of INR by
prothrombin complex concentrate and vitamin K in patients with warfarin related
hemorrhagic complication. Thrombosis Research, 108 (1), 25-30.
Abstract: We investigated the effect of prothrombin complex concentrate (PCC, median
500 IU) and vitamin K (10-20 mg) or either on blood coagulation and clinical
findings in 17 patients with major hemorrhagic complication during warfarin
treatment. Their international normalized ratio (INR) at admission was median
2.7 (2.0-above 10.0). In 11 patients treated with PCC and vitamin K, INR
decreased to median 1.13 (0.91-1.36) 10 min after the administration with
elevation of plasma levels of coagulant factors II, VII, IX, X and protein C. INR
decreased abruptly after the administration of PCC without vitamin K in two
patients but it increased again 12-24 h after, with decrease of coagulant factors
levels. In one of them, a hematoma of the brain enlarged with INR re-increase
12-24 h after the administration. In four patients treated with vitamin K alone,
INR decreased slowly from 2.69 (1.03-3.35) to 1.28 (1.25-1.44) 12-24 h after the
administration in parallel with gradual increase of the coagulant factors. PCC
administration with or without vitamin K seems to be more effective in rapidly
correcting increased INR levels than vitamin K treatment without PCC. PCC
without vitamin K may result in re-increase of INR and clinical deterioration. (C)
2002 Elsevier Science Ltd. All rights reserved
Keywords: administration/brain/clinical
findings/coagulation/complication/EFFICACY/ENGLAND/hematoma/HEMAT
OMAS/hemorrhagic/hemorrhagic complication/INR/international normalized
ratio/INTRACEREBRAL HEMORRHAGE/INTRACRANIAL
HEMORRHAGE/intracranial
hemorrhage/Japan/MANAGEMENT/NONVALVULAR
ATRIAL-FIBRILLATION/ORAL ANTICOAGULANT
REVERSAL/PREVENTION/prothrombin complex
concentrate/STROKE/THERAPY/treatment/vitamin/warfarin
Haas, S. (2003), Medical indications and considerations for future clinical decision
making. Thrombosis Research, 109 S31-S37.
Abstract: There are many well-known drawbacks associated with the currently used
antithrombotic agents, warfarin, heparin, and low-molecular-weight heparins
(LMWHs). Because heparins can be administered only parenterally, their
application is limited. Though warfarin can be administered orally, its
unpredictable anticoagulant effect means that it must be regularly monitored.
Ximelagatran (Exanta(TM), AstraZeneca) is a novel, oral direct thrombin
inhibitor (oral DTI) that is rapidly converted to its active form, melagatran, upon
administration. The antithrombotic effects of melagatran have been demonstrated.
Following the oral administration of ximelagatran, melagatran has stable and
reproducible pharmacokinetic and pharmacodynamic properties that enable
ximelagatran to be administered orally, twice daily, according to a fixed-dose
regimen, with no need for routine coagulation monitoring. In view of its
favourable profile, a clinical trial programme has been designed to evaluate the
efficacy and tolerability of ximelagatran compared with standard therapies, for
the prophylaxis and treatment of venous thromboembolism (VTE), the
prevention of stroke in patients with atrial fibrillation (AF), and the prevention of
cardiovascular events in patients with previous acute coronary syndromes. These
studies show that oral ximelagatran is well tolerated at doses of up to 60 mg,
twice daily (bid), and that it is as effective as standard therapy for the prevention
of thromboembolic events in patients undergoing hip or knee replacement
surgery, for the treatment of clinically verified acute deep vein thrombosis
(DVT), and in patients with nonvalvular AF who have a moderate to high risk of
stroke. The protocols and results of some of these studies-and a study that
investigates the use of ximelagatran in combination with aspirin for the
management of acute coronary artery disease-are described in this paper. (C)
2003 Elsevier Science Ltd. All rights reserved
Keywords: ACTIVE FORM/acute/acute coronary
syndromes/administration/AF/anticoagulant/antithrombotic/antithrombotic
agents/ANTITHROMBOTIC THERAPY/aspirin/atrial/atrial
fibrillation/ATRIAL- FIBRILLATION/cardiovascular/cardiovascular
events/clinical trial/coagulation/combination/coronary artery
disease/CORONARY-ARTERY/decision making/decision-making/deep vein
thrombosis/DIRECT THROMBIN
INHIBITOR/DVT/ENGLAND/fibrillation/Germany/heparin/heparins/high
risk/management/MELAGATRAN/MOLECULAR-WEIGHT
HEPARIN/monitoring/oral
administration/prevention/prophylaxis/protocols/results/risk/stroke/surgery/thera
py/thrombin/thrombin inhibitor/thromboembolic
events/thromboembolism/thrombosis/treatment/trial/use/VEIN-THROMBOSIS/
VENOUS THROMBOEMBOLISM/VTE
treatment/warfarin/XIMELAGATRAN/ximelagatran
Sato, Y., Nakatsuka, H., Watanabe, T., Hisamichi, S., Shimizu, H., Fujisaku, S.,
Ichinowatari, Y., Ida, Y., Suda, S., Kato, K. and Ikeda, M. (1989), Possible
Contribution of Green Tea Drinking Habits to the Prevention of Stroke. Tohoku
Journal of Experimental Medicine, 157 (4), 337-343
Keywords: JAPAN
Tomatis, L. (1995), How Much of the Human-Disease Burden Is Attributable to
Environmental Chemicals. Toxicology Letters, 77 (1-3), 1-8.
Abstract: According to the evaluations made by IARC, 66 agents or exposures have
been recognised as human carcinogens. About 60% of all cancer cases occur in
people over 65 years of age, which is indeed the most important risk factor for
cancer, including both the duration of exposure to the variety of carcinogenic
agents and allowing expression of genetically determined disorders. Diet as a
source of mutagens as well as other environmental mutagens may affect blood
pressure either directly or by favouring the development of arteriosclerosis:
mutagens have been shown to accelerate arteriosclerotic plaque development.
Some concern has also been expressed on the possible adverse effect that
environmental chemicals may have on reproductive ability, on the basis of the
decline in semen quality reported over the past decades. Better defining the role
of aetiological agents would result in a more precise definition of attributable
risks. Of particular interest to the latter goal are the studies of inter-individual
variability in the susceptibility to carcinogens, which will hopefully contribute to
define the role of low-level exposure to carcinogens
Keywords: blood
pressure/CANCER/CARCINOGENESIS/carcinogens/CHEMICALS/DEGENER
ATIVE
DISEASES/development/EPIDEMIOLOGY/ETIOLOGY/MUTATIONS/P53/P
REVENTION/risk/STROKE
Nifong, T.P., Bongiovanni, M.B. and Gerhard, G.S. (2001), Mathematical modeling and
computer simulation of erythrocytapheresis for SCD. Transfusion, 41 (2),
256-263.
Abstract: BACKGROUND: Erythrocytapheresis is used to prevent acute chest syndrome
and stroke in patients with sickle cell disease (SCD). However, such regimens
are associated with significant risks, such as iron overload and potential exposure
to transfusion- transmitted infectious diseases. Computer modeling of
erythrocytapheresis procedures may help optimize treatments and minimize risks.
STUDY DESIGN AND METHODS: Mathematical models based upon material
balance equations and patient-specific statistical analyses were developed to
estimate HbS levels immediately after erythrocytapheresis and immediately
before the next treatment. The equations were incorporated into a software
application that was used to model the effects of various treatment values on four
patients treated with 90 erythrocytapheresis procedures. RESULTS: Immediate
postprocedure HbS values were accurately estimated with correlations between
measured and calculated values ranging from R-2 = 0.83 to 0.96. Estimates of
HbS just before the next treatment correlated well in three patients (R-2 = 0.71 to
0.83) but poorly in one (R-2 = 0.28 to 0.46). Varying the treatment values by
computer simulation led to a wide variation in the number of RBC units and the
net RBC volume transfused. CONCLUSION: Computer modeling of
erythrocytapheresis can be used to optimize chronic treatment regimens for SCD
patients and potentially to minimize the risks of overtransfusion
Keywords:
acute/ANEMIA/BLOOD/chest/CHILDREN/DESIGN/disease/diseases/erythrocy
tapheresis/HEMOGLOBIN-S/IRON
OVERLOAD/POLYMERIZATION/PREVENTION/sickle cell
disease/SICKLE-CELL DISEASE/simulation/statistical/stroke/TERM
TRANSFUSION REGIMEN/THERAPY/TRANSFUSION/treatment
Vichinsky, E.P., Luban, N.L.C., Wright, E., Olivieri, N., Driscoll, C., Pegelow, C.H. and
Adams, R.J. (2001), Prospective RBC phenotype matching in a stroke-prevention
trial in sickle cell anemia: a multicenter transfusion trial. Transfusion, 41 (9),
1086-1092.
Abstract: BACKGROUND: Most sickle cell anemia patients undergo transfusion
therapy to prevent complications. The Stroke Prevention Trial in Sickle Cell
Anemia showed that transfusion therapy is effective in the primary prevention of
stroke. Despite its efficacy, transfusion therapy is limited by alloimmunization.
The purpose of this study was to determine if a multicenter trial could implement
a transfusion program utilizing phenotypically matched blood to reduce
alloimmunization. STUDY DESIGN AND METHODS: One hundred thirty
children underwent RBC phenotyping and antibody screening with review of
blood bank records. The protocol required use of WBC- reduced RBCs, which
were matched for E, C, and Kell. Monthly alloantibody testing and review of
transfusion forms were performed to determine compliance and the occurrence
of any adverse events. RESULTS: Patient RBCs expressed a low frequency of
Kell (2%), E (20%), and C (25%) antigens. Sixty-one patients received 1830
units. Ninety-seven percent of all units were WBC reduced. Only 29 units were
inadvertently not matched for E, C, and Kell. Five patients (8%) developed a
clinically significant alloantibody. Four developed a single antibody to E or Kell.
Three patients (5%) developed a warm autoantibody. There were 11 transfusion
reactions and 8 transfusion-associated events. Transfusion reactions included 6
febrile reactions (0.33%/unit), 3 allergic (0.16%/unit), and 2 hemolytic
(0.11%/unit). Associated events included 4 episodes of hypertension
(0.22%/unit), 3 crises (0.16%/unit), and 1 transient ischemic attack (0.05%/unit).
CONCLUSION: This is the first multicenter study to show that extended RBC
phenotyping can be implemented nationwide. Compared to studies, the
alloimmunization rate dropped from 3 percent to 0.5 percent per unit, and
hemolytic transfusion reactions dropped by 90 percent. It is recommended that
all transfused sickle cell anemia patients be antigen matched for E, C, and Kell.
Patients should be closely monitored during transfusions to avoid preventable
risks
Keywords: adverse
events/ALLOIMMUNIZATION/anemia/antibody/ASSOCIATION/autoantibody
/BLOOD/children/complications/DESIGN/DISEASE/EXCHANGE-TRANSFU
SION/HEMOGLOBIN/hypertension/ischemic/low
frequency/MANAGEMENT/MORBIDITY/prevention/primary/primary
prevention/RECIPIENTS/review/screening/sickle cell anemia/stroke/stroke
prevention/THERAPY/transfusion/transient/transient ischemic attack/trial/use
Hartwig, D., Schlager, F., Bucsky, P., Kirchner, H. and Schlenke, P. (2002), Successful
long-term erythrocytapheresis therapy in a patient with symptomatic sickle-cell
disease using an arterio-venous fistula. Transfusion Medicine, 12 (1), 75-77.
Abstract: The use of long-term automated erythrocytapheresis via an arterio-venous
fistula for the prevention of recurrent ischaemic stroke in a child with sickle-cell
disease (SCD) has not been described previously. We report the successful use of
this technique in a 13-year-old boy. A procedure was performed every 36 +/- 6
days, transfusing six units of donor packed red blood cells (RBCs) and
discarding 1318 +/- 174 mL of exchanged erythrocytes (Hct 60%). After
transfusion of 85 units over 17 months, there is no evidence for iron-overload,
red cell alloimmunization, transfusion-transmitted infections, or other
complications. Until now, no cerebrovascular ischaemia has been observed
Keywords: alloimmunization/arterio-venous fistula/arteriovenous fistula/blood
cells/cerebrovascular/complications/disease/ENGLAND/erythrocytapheresis/Ger
many/iron overload/ischaemia/ischaemic/ischaemic stroke/prevention/REDUCE
IRON OVERLOAD/sickle cell disease/sickle-cell
disease/STROKE/therapy/TRANSFUSION/use
Suckfull, M.M., Pieske, O., Mudsam, M., Babic, R. and Hammer, C. (1994), The
Contribution of Endothelial-Cells to Hyperacute Rejection in Xenogeneic
Perfused Working Hearts. Transplantation, 57 (2), 262-267.
Abstract: The mechanisms leading to the hyperacute rejection of a vascularized
xenograft are still incompletely understood. The first stage of the rejection
process is when blood of the recipient comes into contact with the endothelium
of the xenograft. A working heart model was used to examine
endothelium-related processes and their impact on organ function. Pig hearts
were perfused with porcine (autologous) or human (xenogeneic) blood. Cardiac
function was evaluated by calculating the stroke work index, arteriovenous
oxygen, coronary flow, and resistance. PgF1a as a marker of endothelial
activation, its antagonist TXB(2), and myoglobin reflecting myocardial damage
were measured in the hemoperfusate. H&E and PAS staining and
immunohistological demonstration of factor VIII-related antigen was performed.
Xenogeneic perfused porcine hearts showed significantly less stroke work, a
higher arteriovenous oxygen difference, and an increased coronary resistance.
Factor VIII-related antigen could not be demonstrated immunohistologically on
the endothelium after xenogeneic perfusion. PgF1a levels were significantly
higher in the xenogeneic hemoperfusate, indicating endothelial cell activation.
The concentration of myoglobin in the hemoperfusate remained within normal
values and was similar during autologous and xenogeneic perfusion. Therefore
endothelium-related processes are likely to affect the coronary circulation-thus
being one mechanism leading to diminished cardiac performance during
hyperacute rejection
Keywords: endothelium/FACTOR-VIII/heart/INJURY/NATURAL
ANTIBODIES/PLATELETS/PREVENTION/PROSTACYCLIN/RABBIT/REL
EASE/stroke/TRANSPLANTATION/XENOGRAFT REJECTION
Schmoeckel, M., Nollert, G., Shahmohammadi, M., Young, V.K., Chavez, G.,
KasperKonig, W., White, D.J.G., MullerHocker, J., Arendt, R.M.,
WilbertLampen, U., Hammer, C. and Reichart, B. (1996), Prevention of
hyperacute rejection by human decay accelerating: Factor in xenogeneic perfused
working hearts. Transplantation, 62 (6), 729-734.
Abstract: As a potential source of organs for xenotransplantation, pigs that are transgenic
for human decay accelerating factor (DAF) have been bred in order to overcome
hyperacute rejection. We investigated the protective effect of human DAF in a
porcine working heart model perfused by human blood. Hearts of normal
landrace pigs served as controls, The following parameters were measured:
stroke work index, coronary flow and arteriovenous oxygen consumption, 6-keto
prostaglandin F-1 alpha and prostaglandin E(2) as markers of endothelial cell
activation; creatine phosphokinase and lactate dehydrogenase for evaluation of
the extent of myocardial damage; TNF alpha and IL-6 as markers of
mononuclear cell activation, Histological and ultrastructural investigations from
myocardial tissue sections were done at the end of perfusion, Human (h) DAF
appeared to inhibit complement-mediated endothelial cell activation of
transgenic pig hearts successfully. This was in contrast to landrace pig hearts,
which had a sixfold increase of prostaglandin levels during perfusion with human
blood, The cardiac weight increase during perfusion time due to interstitial
edema tended to be less in the hDAF group. Myocardial damage was minimal in
transgenic hearts, whereas normal pig hearts produced a threefold increase of
creatine phosphokinase and lactate dehydrogenase levels. In these hearts,
electron microscopy revealed single cell necrosis of myocytes and vacuolization
of mitochondria with cristae rupture. According to the results obtained in the
working heart model, the breeding of pigs that are transgenic for hDAF
represents a promising step to making heart xenotransplantation a clinical reality
in the future
Keywords: CARDIOPULMONARY
BYPASS/ENDOTHELIAL-CELLS/EXPRESSION/INHIBITION/stroke/TRAN
SPLANTATION/VIVO
Howard, R.J., Patton, P.R., Reed, A.I., Hemming, A.W., Van Der Werf, W.J., Pfaff,
W.W., Srinivas, T.R. and Scornik, J.C. (2002), The changing causes of graft loss
and death after kidney transplantation. Transplantation, 73 (12), 1923-1928.
Abstract: Background. The results of kidney transplantation have improved markedly
over the last three decades. Despite this, patients still lose grafts and die. We
sought to determine whether the causes of graft loss and death have changed over
the last 30 years. Methods. We reviewed patients who underwent transplantation
or who died between January 1, 1970 and December 31, 1999. We compared the
causes of graft loss or death for three decades: 1970 to 1979, 1980 to 1989, and
1990 to 1999. Results. From January 1, 1970 to December 31, 1999, we
performed 2501 kidney transplantations in 2225 patients. For the three periods,
210, 588, and 383 patients lost their grafts, respectively. Graft survival increased
substantially. Graft loss occurred later after transplantation, with 36.0% losing
grafts in the first year during 1970 to 1970, 22.8% during 1980 to 1989, and
11.4% during 1990 to 1999. Death with a functioning graft increased from 23.8%
for 1970 to 1979 to 37.5% for 1990 to 1999. Concomitantly, rejection as a cause
of graft loss fell from 65.7% for 1970 to 1979 to 44.6% for 1990 to 1999.
Approximately two thirds of the patients who died after transplantation died with
a functioning graft and one third died after returning to dialysis. Cardiac disease
as a cause of death increased from 9.6% for 1970 to 1979 to 30.3% for 1990 to
1999. Deaths from cancer and stroke also increased significantly over the three
decades from 1.2% and 2.4%, respectively, for 1970 to 1979, to 13.2% and 8.0%,
respectively, for 1990 to 1999. Conclusions. The causes of graft loss and death
have changed over the last three decades. By better addressing the main causes
of death, cardiac disease, and stroke with better prevention, graft loss due to
death with a functioning graft will be reduced
Keywords: cancer/cardiac/cause of
death/causes/death/disease/POPULATION/prevention/PROGRESS/RECIPIENT
S/REJECTION/RENAL-TRANSPLANTATION/SINGLE-CENTER/stroke/SU
RVIVAL/TRANSPLANTATION/UNITED-STATES
Kelly, J.S. and Sharkey, J. (2001), Immunosuppressants-ligands as neuroprotectants.
Transplantation Proceedings, 33 (3), 2217-2219
Keywords: ALLOGRAFT- REJECTION/CALCINEURIN
INHIBITORS/COMPARING TACROLIMUS
FK506/CYCLOSPORINE-A/ISCHEMIC
STROKE/MANAGEMENT/NEW-YORK/PREVENTION/TRANSPLANTATI
ON/TRIAL
Ridker, P.M. (1995), An epidemiologic reassessment of lipoprotein(a) and
atherothrombotic risk. Trends in Cardiovascular Medicine, 5 (6), 225-229.
Abstract: Lipoprotein(a) [Lp(a)] is a unique lipoprotein particle, which appears to play a
critical role in both atherogenesis and fibrinolysis. On the basis of extensive
laboratory research, as well as several retrospective case-control studies that
demonstrate a positive association between Lp(cr) and vascular risk, Lp(a) has
often been considered an important atherothrombotic risk factor. However, a
controversial series of nine prospective studies evaluating plasma Lp (a) and risk
of future myocardial infarction, coronary heart disease, and stroke has provided
inconsistent evidence of association. Although some of these studies have been
criticized for potential methodologic limitations, the results of four well-
designed, large-scale prospective analyses deriving from the Physicians' Health
Study, the Lipid Research Clinics Coronary Primary Prevention Trial, the British
United Provident Association Study, and the Gottingen Risk Incidence and
Prevalence Study still provide apparently conflicting data. What emerges from an
epidemiologic overview of these studies is that routine clinical assessment of
Lp(a) is likely to have low positive predictive value in terms of screnning for
atherothrombotic disease, and that any true increase in risk associated with
plasma Lp(a) concentration probably is of small absolute magnitude. At the same
time, the available epidemiologic data must not be construed to exclude a critical
role for Lp(a) in either atherogenesis or fibrinolysis, particularly given the
strength of basic science data regarding this unique lipoprotein. Future studies
evaluating isoforms and genetic determinants of Lp(a) will therefore be required
to address the Lp(a) hypothesis fully
Keywords: ARTERY DISEASE/ASSOCIATION/ATHEROSCLEROSIS/case-control
studies/coronary heart disease/CORONARY HEART-DISEASE/EXPRESSING
HUMAN APOLIPOPROTEIN(A)/genetic/heart/LIPIDS/LP(A)/myocardial
infarction/MYOCARDIAL-INFARCTION/PLASMA
LIPOPROTEIN(A)/prospective studies/risk/SERUM
LIPOPROTEIN(A)/stroke/vascular/WOMEN
Picano, E. and Abbracchio, M.P. (1998), European Stroke Prevention Study-2 results:
serendipitous demonstration of neuroprotection induced by endogenous
adenosine accumulation? Trends in Pharmacological Sciences, 19 (1), 14-16.
Abstract: In patients with prior stroke or transient ischaemic attack, anti-platelet
treatment with dipyridamole substantially reduced stroke recurrence, with a
beneficial effect comparable to and additive with that induced by aspirin (the
European Stroke Prevention Study-2). Eugenio Picano end Maria Abbracchio
present here a platelet-independent hypothesis, according to which
cardiovascular and neuroprotective actions achieved by dipyridamole through
chronic elevation of endogenous adenosine levels may have contributed to the
therapeutic success of this study
Keywords: antiplatelet
treatment/aspirin/BRAIN/CELLS/DIPYRIDAMOLE/ENGLAND/neuroprotectio
n/PERMEABILITY/recurrence/stroke/transient/TRANSPORT/treatment/TREN
DS
Denicourt, C. and Dowdy, S.F. (2003), Protein transduction technology offers novel
therapeutic approach for brain ischemia. Trends in Pharmacological Sciences, 24
(5), 216-218.
Abstract: Transient or permanent reduction in cerebral blood flow following ischemia
can lead to severe and irreversible tissue damage to the brain. Emerging
biochemical evidence suggests a role for apoptosis in neuronal death following
cerebral ischemia. Despite the abundance of studies on the subject, therapeutic
interventions for ischemia-related cell injury have so far proved disappointing in
clinical trials. Recently, four new, exciting studies reported the use of protein
transduction technology to deliver anti-apoptotic molecules to protect neuronal
cells following ischemic stroke in vivo. These studies offer new avenues for the
treatment and prevention of cell death following brain injuries
Keywords: apoptosis/BCL-XL/blood flow/brain/brain ischemia/cerebral/cerebral blood
flow/cerebral ischemia/clinical
trials/death/DELIVERY/ENGLAND/ischemia/ischemic/ischemic
stroke/LONDON/NEURONAL
APOPTOSIS/prevention/stroke/treatment/TRENDS/trials/USA/use
Andersen, H.E., Jurgensen, K.S.L. and Boysen, G. (2001), Stroke rehabilitation: effect
of psychosocial intervention following primary rehabilitation in hospital.
Ugeskrift for Laeger, 163 (9), 1250-1254.
Abstract: Psychosocial support has been suggested as a way of easing stroke survivors'
and their carers' adjustment to a life with disability. The literature on
psychosocial support services following primary rehabilitation in hospital was
reviewed. Eleven controlled studies evaluating the effect of psychosocial support
interventions after discharge from hospital were identified. The studies differed
widely with respect to design, intervention and evaluation methods. The results
suggest that psychosocial support after discharge can improve psychological well
being and quality of life for stroke survivors and their families and improve the
social activity of patients. The effect was achieved by using different types of
intervention such as providing information, counselling and support from stroke
clubs. Psychosocial support for carers was effective as well. Future research
should elucidate this area, including evaluation of psychosocial support as a
tertiary prevention strategy
Keywords:
CARERS/CONSEQUENCES/COPENHAGEN/Denmark/design/disability/evalu
ation/hospital/INFORMATION/LEISURE/NEUROPSYCHOLOGICAL
REHABILITATION/prevention/primary/quality of life/RANDOMIZED
CONTROLLED TRIAL/rehabilitation/research/stroke/SUPPORT
Mullins, C.D., Blak, B.T. and Akhras, K.S. (2002), Comparing cost-effectiveness
analyses of anti-hypertensive drug therapy for decision making: Mission
impossible? Value in Health, 5 (4), 359-371.
Abstract: The purpose of this literature review was to compare the methodology used in
the most recently published cost- effectiveness studies of antihypertensive
treatments, and to identify methodological strengths and weaknesses that indicate
the Study's potential as a useful, decision-making tool. Based on the results of a
search of several databases, spanning the years 1995 to 2000, 10
cost-effectiveness studies were identified. Although the majority of the studies
reported their cost-effectiveness ratio in "costs per year of life gained," the
Studies also considered a varying range of components including additional end
points. The methodology used to measure effectiveness, the cost variables
included, and the characteristics of the patient population varied significantly
across studies. Due to this lack of conformity, it would be difficult, if not
impossible, to compare the results and draw conclusions about the relative
cost-effectiveness of different types of antihypertensive drug therapies. This lack
of uniform comparison across studies is likely to draw criticism from both the
clinical and health-care decision-making communities. Future studies within this
field should be thorough and useful for decision making. It is suggested that
short-term outcomes should include systolic and diastolic blood pressure
measurements and long-term outcomes should include end points such as
myocardial infarction, stroke, congestive heart failure and renal events. Other
positive outcomes such as a more favorable side-effect profile, should be used to
enhance the primary outcomes. Additionally, when subpopulations are
considered in submodels, studies should address the issue of generalizability.
Cost calculations should be transparent and related to the perspective of the study.
Modeling the cost- effectiveness of a drug may be an acceptable method
provided that data sources and assumptions are valid and transparent
Keywords: blood pressure/congestive heart failure/cost/cost
effectiveness/cost-effectiveness/decision making/decision-making/diastolic
blood pressure/DISEASE/drug/drug therapy/ENALAPRIL/end
points/guidelines/HEALTH/health care/heart/heart
failure/hypertension/infarction/literature
review/methodology/myocardial/myocardial
infarction/population/PREVENTION/primary/renal/review/stroke/therapy
Chambers, M.G., Koch, P. and Hutton, J. (2002), Development of a decision-analytic
model of stroke care in the United States and Europe. Value in Health, 5 (2),
82-97.
Abstract: Objective: Stroke places a huge burden on society in terms of premature death,
disability, and costs of care. Increasingly, the cost-effectiveness of new
interventions needs to be demonstrated before their widespread implementation.
Clinical trials are unable to measure the long-term impact of such new
interventions in stroke care, and a modeling approach is necessary. The Stroke
Outcome Model has been developed in four Countries: France, Germany, the
United Kingdom, and the United States as a flexible toot for this purpose.
Method: The decision-analytic model represents the management of acute stroke
and long-term care and prevention of recurrence for stroke survivors. The latter
consists of semi-Markov state- transition processes, with health states defined by
therapy, disability, and occurrence of Further stroke. Source S Of Clinical data
include trials, meta-analyses, and prospective cohort studies such as the
Oxfordshire Community Stroke Project and the Northern Manhattan Stroke
Study. Resource use data were obtained from published sources and expert
clinician panels. Outcome measures used were strokes averted, life years, and
quality-adjusted life-years gained. Results: The model has been used to
undertake economic analyses of antiplatelet therapy for the prevention of
recurrent strokes, and of stroke unit care and thrombolytic therapy in acute stroke.
From a health- and social-care perspective, new interventions were found to be
cost saving or to provide health benefits at modest additional cost. Result, were
sensitive to the cost perspective, mile horizon, baseline risk of stroke recurrence,
and choice of effectiveness measure. Conclusion: The development of this model
highlights the need for improved information on prognosis and resources used by
stroke survivors and the importance of differentiating between economically
distinct end points Such as death, disabled survival and nondisabled survival,
which may tic combined as outcomes in clinical trials
Keywords: ACETYLSALICYLIC-ACID/acute/ACUTE ISCHEMIC STROKE/acute
stroke/antiplatelet/antiplatelet therapy/CEREBRAL INFARCTION/cerebral
ischemia/cerebrovascular disease/clinical trials/cohort studies/cost/cost
effectiveness/COST-EFFECTIVENESS/cost-effectiveness analysis/costs/costs
and cost analysis/death/decision analysis/decision analytic
model/development/disability/ECONOMIC-EVALUATION/end
points/England/Europe/FIRST-EVER
STROKE/Germany/HEALTH/HIGH-RISK
PATIENTS/management/modeling/platelet aggregation
inhibitors/PREVENTION/prevention of recurrence/prognosis/prospective cohort
studies/quality-adjusted
life-years/QUALITY-OF-LIFE/recurrence/risk/stroke/stroke recurrence/stroke
unit/stroke units/survival/therapy/thrombolytic/thrombolytic
therapy/TRIAL/trials/United Kingdom/United States/use
Becker, E.I., Jung, A., Voller, H., Wegscheider, K., Vogel, H.P. and Landgraf, H. (2001),
Cardiogenic embolism as the main cause of ischemic stroke in a city hospital: An
interdisciplinary study. Vasa-Journal of Vascular Diseases, 30 (1), 43-52.
Abstract: Background: It is essential to understand the pathogenesis of ischemic stroke
to ensure rational acute therapy and secondary prevention. We wanted to know
the distribution of pathogenesis in patients of a city hospital and the differences
in risk factors, neurologic deficits, disability and delay in clinical admittance.
Patients and methods: During a period of one year 222 patients (mean age 76,6
years; 59% women) with complete acute ischemic stroke were admitted and
underwent complete clinical and diagnostic procedures. CCT/MRI; Doppler- and
color-coded duplex and transcranial sonography; echocardiography; use of the
NINCDS stroke scale and the Oxford disability scaler study of risk factors, and
exploration of delay in admittance. Results: The following percentages of
etiologies were evident: 31% cardiogenic embolism (60% with atrial fibrillation),
13% microangiopathy, 9% macroangiopathy, 11% cerebellar or brain stem
infarction, 18% more than one cause and 18% no cause found. The patients with
cardiogenic embolism showed significantly the highest scores on the stroke scale
and the disability scale and had the shortest delay in admittance (57% were
admitted within 3 hours). Conclusions: In a city hospital, cardiogenic embolism
is the main cause of ischemic stroke. These patients suffer significantly the most
severe neurologic deficits, dependence, and requirement of daily nursing care.
These patients have the shortest delay in clinical admittance and the best chance
of benefiting from acute therapy and early secondary prevention
Keywords: acute/acute ischemic
stroke/age/AMERICAN-HEART-ASSOCIATION/atrial
fibrillation/ATRIAL-FIBRILLATION/ATTACKS/brain/cardioembolic
stroke/CAROTID- ARTERY/CEREBRAL
INFARCTION/CEREBROVASCULAR- DISEASE/DATA-
BANK/DESIGN/diagnostic/disability/Doppler/duplex/echocardiography/embolis
m/essential/fibrillation/Germany/hospital/infarction/ischemic/ischemic
stroke/nursing/pathogenesis of stroke/prevention/risk/risk
factors/secondary/secondary prevention/SPONTANEOUS
ECHO-CONTRAST/stroke/therapy/transcranial/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/use/women
Mohler, E.R., Delanty, N., Rader, D.J. and Raps, E.C. (1999), Statins and
cerebrovascular disease: plaque attack to prevent brain attack. Vascular Medicine,
4 (4), 269-272.
Abstract: Stroke is the third leading cause of death in the USA and in the developed
world. The beneficial role of cholesterol reduction in decreasing stroke has been
uncertain. However, recent data indicate that statin treatment in patients with a
history of myocardial infarction not only reduces the risk of a second myocardial
infarction, coronary heart disease, revascularization procedures and death, but
also significantly reduces the risk of stroke. However, the mechanism(s) by
which statins reduce stroke remain uncertain. Thus, the therapeutic
armamentarium for the reduction of stroke in secondary prevention now includes
cholesterol reduction with statins
Keywords: brain/CAROTID ATHEROSCLEROSIS/CEREBRAL
INFARCTION/cerebrovascular/cerebrovascular
disease/cholesterol/CHOLESTEROL LEVELS/coronary heart
disease/CORONARY
HEART-DISEASE/ENGLAND/heart/history/infarction/LIPIDS/myocardial/myo
cardial infarction/plaque/PRAVASTATIN/prevention/REDUCTASE
INHIBITOR/risk/RISK-FACTORS/secondary prevention/SERUM-
CHOLESTEROL/statins/stroke/STROKE/treatment
Smith, N.M., Pathansali, R. and Bath, P.M.W. (1999), Platelets and stroke. Vascular
Medicine, 4 (3), 165-172.
Abstract: Platelets are anucleate cells with little or no capacity for de novo protein
synthesis. Their potential haemostatic reactivity is established at or before
thrombopoiesis by their precursor cell, the bone marrow megakaryocyte. In some
pathologic conditions, the megakaryocyte-platelet-haemostatic axis (MPHA)
becomes perturbed, resulting in the formation of hyperfunctional platelets which
may contribute to the development of vascular disease or an acute thrombotic
event such as ischaemic stroke or myocardial infarction. Laboratory
measurements of platelet function have established that platelet reactivity is
accentuated in acute ischaemic stroke, particularly following cortical rather than
lacunar infarction. Whether accentuated platelet function is a cause or a
consequence of stroke is not yet clear, but it is likely that patients with certain
risk factor profiles have some degree of platelet activation preceding the stroke.
Further work into the MPHA is required to establish whether enhanced
post-stroke platelet reactivity can be referred to the megakaryocyte. The
antiplatelet agents tested to date are effective in secondary but not primary
prevention of stroke. This probably reflects the diverse pathophysiology of stroke:
accentuated platelet function is only likely to be a significant factor in cortical
stroke
Keywords: ACTIVATION/acute/ACUTE ISCHEMIC STROKE/antiplatelet
agents/CEREBRAL-ISCHEMIA/development/England/formation/HYPERTENS
ION/infarction/ischaemic stroke/lacunar infarction/MEGAKARYOCYTE
PLOIDY/megakaryocytes/myocardial/myocardial
infarction/MYOCARDIAL-INFARCTION/P- SELECTIN/platelet
activation/platelets/prevention/primary prevention/RANDOMIZED
TRIAL/risk/risk factor/stroke/vascular/vascular
disease/VASCULAR-DISEASE/VOLUME
Nenci, G.G. and Minciotti, A. (2000), Low molecular weight heparins for arterial
thrombosis. Vascular Medicine, 5 (4), 251-258.
Abstract: The use of low molecular weight heparin (LMWH) for the prevention and
treatment of venous thromboembolism has been validated by numerous clinical
trials and meta-analyses over the past 25 years. More recently, the possibility of
extending treatment with LMWH to the arterial disease where thrombosis is a
prominent feature has led to the planning of many clinical trials, several of which
have been already published. LMWH has been tested in settings such as acute
coronary syndromes, including myocardial infarction, surgery or percutaneous
revascularization for coronary and peripheral arteries, and stroke. In most
indications, LMWH has proved to be superior to or at least as effective as
unfractionated heparin and it is also easier to administer
Keywords: acute/acute coronary syndromes/ACUTE
MYOCARDIAL-INFARCTION/ANGIOGRAPHIC
RESTENOSIS/arterial/arterial thrombosis/arteries/cardiovascular disease/clinical
trials/CORONARY ANGIOPLASTY/disease/DOUBLE-
BLIND/ENGLAND/ENOXAPARIN/heparin/heparins/infarction/LONDON/low
molecular weight heparin/MANAGEMENT/myocardial/myocardial
infarction/PREVENTION/RANDOMIZED
TRIAL/revascularization/stroke/surgery/thromboembolism/THROMBOLYSIS/t
hrombosis/treatment/trials/UNFRACTIONATED HEPARIN/use/venous
thromboembolism/weight
Leys, D. (2001), Atherothrombosis - the neurologist's point of view. Vascular Medicine,
6 (3), 17-19.
Abstract: Patients with peripheral arterial disease (PAD) have an increased risk of
cerebral ischaemia, but many transient ischaemic attacks are not recognized by
patients, or by physicians who are not neurologists. Similarly, PAD is common
in stroke patients, but often remains unrecognized by neurologists. Major
long-term risks in patients with cerebral ischaemia due to atherosclerosis are
myocardial infarction and recurrence of stroke. Neurologists should consider
concomitant PAD when choosing a treatment strategy. Patients with PAD need
to be educated about their risk for cerebral ischaemic events, and physicians
caring for PAD patients need to identify those individuals who may require
carotid surgery. The appropriate strategy for prevention of stroke in PAD
patients consists of optimal management of risk factors for stroke (smoking,
arterial hypertension, hypercholesterolaemia), antiplatelet therapy with
clopidogrel as first-choice treatment, and carotid surgery in patients with
high-grade stenosis of the internal carotid artery who are at low risk for surgery
Keywords: antiplatelet/ANTIPLATELET THERAPY/arterial/arterial disease/arterial
hypertension/ASPIRIN/atherosclerosis/atherothrombosis/carotid/carotid
artery/carotid surgery/cerebral/cerebral
ischaemia/CLOPIDOGREL/COMMUNITY STROKE PROJECT/coronary heart
disease/DISEASE/ENGLAND/hypercholesterolaemia/hypertension/infarction/in
ternal carotid artery/ischaemia/ischaemic/ISCHEMIC
STROKE/LONDON/management/myocardial/myocardial infarction/peripheral
arterial disease/prevention/recurrence/risk/risk factors/risk factors for
stroke/risks/smoking/stenosis/stroke/stroke
patients/surgery/therapy/transient/transient ischaemic
attacks/treatment/VASCULAR EVENTS
Agnelli, G. (2001), Rationale for the use of platelet aggregation inhibitors in PAD
patients. Vascular Medicine, 6 (3), 13-15.
Abstract: Peripheral arterial disease (PAD) is a major risk marker for systemic ischaemic
events. The understanding of PAD has moved from PAD as an organ-specific
disease to PAD as the lower-limb localization of a multifocal disease, i.e.
atherothrombosis. Blood platelet activation and aggregation is a common
denominator in atherothrombotic events, and use of antiplatelet agents in patients
with PAD can inhibit thrombus formation and reduce the occurrence of
myocardial infarction (MI), ischaemic stroke (IS) and vascular death. Many
studies have investigated various antiplatelet regimens for preventing acute
cardiovascular events in patients with a prior ischaemic event, although many of
these studies had a number of limitations. The Antiplatelet Trialists'
Collaboration performed a meta-analysis of 23 stroke trials and found an average
odds risk reduction of 25% for a combined endpoint of stroke, MI or vascular
death. The concept of atherothrombosis as a multifocal disease was challenged
by the Clopidogrel versus Aspirin in Patients at Risk of Ischaemic Events
(CAPRIE) trial. This study showed an 8.7 lo decrease in the relative risk
reduction for further atherothrombotic events with clopidogrel over aspirin
(p=0.043) for the overall population, in terms of the combined endpoint of IS, MI
or vascular death
Keywords: activation/acute/aggregation/antiplatelet/antiplatelet agents/arterial/arterial
disease/ASPIRIN/atherothrombosis/cardiovascular/cardiovascular
events/CLOPIDOGREL/death/DIPYRIDAMOLE/disease/DRUGS/ENGLAND/
formation/INFARCTION/ischaemic/ischaemic
stroke/LONDON/meta-analysis/multifocal/myocardial/myocardial
infarction/peripheral arterial disease/platelet/platelet activation/platelet
aggregation/platelet aggregation inhibitors/population/RECEPTOR/relative
risk/risk/SECONDARY
PREVENTION/stroke/thrombus/TRIAL/trials/use/vascular
Samson, R.H., Bandyk, D.F., Showalter, D.P. and Yunis, J.P. (2000), Carotid
endarterectomy based on duplex ultrasonography: A safe approach associated
with long-term stroke prevention. Vascular Surgery, 34 (2), 125-136.
Abstract: To evaluate the short-term and long-term safety of carotid endarterectomy
(CEA) based on duplex ultrasound without confirmatory diagnostic
arteriography. A 4-year retrospective review off CEA based on duplex
ultrasound alone (n = 653) or with confirmatory arteriography (n = 118) was
performed in 244 women and 458 men whose ages ranged from 39 to 92 years
(mean, 70 years). Practice patterns, perioperative morbidity, and stroke rate
(life-table analysis) of a community-based and university-based vascular surgical
practice were analyzed and compared. Surgical intervention based on duplex
ultrasound was judged possible in 85% of the patients (community, 93%;
university, 55%). Indications for arteriography included: testing completed prior
to surgical consultation (44%), nonfocal extracranial carotid stenosis (23%),
nonhemispheric symptoms (13%), and prior stroke (9%). This approach was safe
(with a combined operative mortality and neurologic morbidity of 1.8%),
associated with long-term stroke prevention (a 95% stroke-free survival at 4
years), and yielded results similar to CEA with arteriography (operative
morbidity, 2.6%; 91% stroke-free survival). The incidence and nature of late
neurologic deficits were similar after CEA with and without arteriography.
Twenty-three (4%) of the patients who underwent CEA based on duplex
ultrasound developed late neurologic symptoms including 9 contralateral and 4
ipsilateral strokes; and 4 ipsilateral and 4 contralateral transient ischemic attacks
(TIAs). Cardiac embolism from atrial fibrillation accounted for 6 strokes, lacunar
infarct associated with hypertension (3 strokes), intracranial atherosclerosis (3
strokes), and contralateral internal carotid artery (ICA) occlusion (1 stroke).
Forty patients (6.8%) died predominantly from cardiac events. After CEA with
arteriography 6 (5%) of the patients died. Six late strokes (4 contralateral, and 2
ipsilateral hemisphere) occurred as a result of progressive, untreated ICA
stenosis (n = 3), and lacunar infarct (n = 3). Overall, 11% of the patients
underwent contralateral CEA for progressive ICA stenosis. CEA, based on
duplex scanning, is safe and applicable for the majority of patients undergoing
surgical evaluation. Short-term and long-term outcomes were similar to
outcomes in patients having CEA based on diagnostic arteriography
Keywords: 70-PERCENT/ANGIOGRAPHY/AORTIC-ARCH/ARTERY
STENOSIS/atherosclerosis/atrial fibrillation/cardiac/carotid/carotid
artery/carotid endarterectomy/carotid
stenosis/community/CRITERIA/duplex/duplex
scanning/embolism/endarterectomy/evaluation/fibrillation/HEAD/hypertension/i
ncidence/internal carotid artery/ischemic/life
table/men/morbidity/mortality/PREOPERATIVE
ASSESSMENT/prevention/RELIABILITY/review/safety/SCANNING
SUFFICIENT/SIPHON STENOSIS/stenosis/stroke/stroke
prevention/transient/transient ischemic
attacks/ultrasonography/ULTRASOUND/vascular/women
Gorbacheva, F.Y., Gerasimova, O.B., Latveyeva, L.A., Natyazhkina, G.M., Parfenov,
V.A. and Chuchin, M.Y. (1994), Hemodynamic and Rheological Aspects of
Pathogenesis and Prevention of Cerebrovascular Diseases. Vestnik Rossiiskoi
Akademii Meditsinskikh Nauk, (8), 45-49.
Abstract: Ultrasonography was used to study carotid and central hemodynamics in
patients with cerebrovascular diseases and to analyze the factors responsible for
reduction of cerebral blood supply. Comparative studies of the regulatory system
for blood aggregation in patients elucidated the contribution of the system to the
pathogenesis of cerebral hemorrhage and ischemia, defined the modes of
preventing hemorrhagic and ischemic events in cerebrovascular disease. The
authors also discussed pathogenetic and prophylactic aspects of the diseases in
childhood
Keywords: aggregation/carotid/cerebrovascular disease/cerebrovascular
diseases/diseases/DOPPLER/FLOW/hemorrhage/ischemia/STROKE
Grol, M.E.C., Halabi, Y.T., Gerstenbluth, I., Alberts, J.F. and Oniel, J. (1997), Lifestyle
in Curacao - Smoking, alcohol consumption, eating habits and exercise. West
Indian Medical Journal, 46 (1), 8-14.
Abstract: The Curacao Health Study was carried out among a randomized sample (n =
2248, response rate = 85%) of the adult non- institutionalized population in order
to assess aspects of lifestyle that may pose health risks. Factors examined were
tobacco and alcohol use, eating habits and exercise behaviour. Outcome
variables were cross-tabulated by gender, age and socioeconomic status. 17.1%
of the participants were smokers and 20.5% were regular drinkers, including
6.3% of the men who consumed alcohol excessively (4 or more glasses of
alcohol a day). 75% of the participants did not exercise regularly, 37% did not
eat vegetables daily, and half did not eat fruit daily. Other poor eating habits
were the addition of extra sugar and salt to prepared food by 33% and 20% of the
participants, respectively. On the whole, men had less healthy lifestyles than
women, with the exception of exercise behaviour. People of high socioeconomic
status (SES) drank less alcohol, and exercised more open than those of low SES.
Considering the high prevalence of diabetes mellitus and hypertension in the
Caribbean, research on lifestyle factors in other Caribbean countries is required
to facilitate the development of regional prevention and intervention programmes
Keywords: age/alcohol/CARE/development/diabetes/diabetes
mellitus/DIET/DISEASE/exercise/fruit/HEALTH/hypertension/lifestyle/MORT
ALITY/PHYSICAL-ACTIVITY/prevention/randomized/RISK FACTOR
LEVELS/salt/socioeconomic
status/STROKE/SYSTEM/tobacco/TRENDS/WOMEN
Goodnight, S.H., Coull, B.M., Mcanulty, J.H. and Taylor, L.M. (1993), Antiplatelet
Therapy .1. Western Journal of Medicine, 158 (4), 385-392.
Abstract: We summarize current information about aspirin and other antiplatelet drugs in
patients with cardiac and vascular disease. For each indication, we briefly
summarize the rationale for the use of antiplatelet therapy and describe the
findings of relevant clinical trials. We propose recommendations for the use of
these agents in clinical practice. Part I covers the use of antiplatelet therapy for
the primary and secondary prevention of myocardial infarction, coronary
thrombolysis, unstable and chronic stable angina, and coronary artery-saphenous
vein bypass grafts. In part II we review the use of antiplatelet agents in coronary
angioplasty, atrial fibrillation, artificial cardiac valves, stroke. and peripheral
vascular disease
Keywords: ACUTE MYOCARDIAL- INFARCTION/ARTERY
BYPASS-SURGERY/CARDIOVASCULAR-DISEASE/CLINICAL-TRIALS/L
OW-DOSE ASPIRIN/MORNING INCREASE/PRIMARY
PREVENTION/TISSUE PLASMINOGEN-ACTIVATOR/UNSTABLE
ANGINA/VEIN-GRAFT PATENCY
Moore, W.S. (1993), Carotid Endarterectomy for Prevention of Stroke. Western Journal
of Medicine, 159 (1), 37-43.
Abstract: Carotid endarterectomy, a frequently performed operation, has been used as a
strategy for preventing stroke in patients with carotid bifurcation disease. The
safety and efficacy of the operation were recently challenged by a number of
sources. Three major responses to this challenge were to retrospectively review
the natural history of carotid bifurcation disease compared with the immediate
and long-term results of carotid endarterectomy, to initiate 6 prospective
randomized trials to determine the efficacy of carotid endarterectomy for a
variety of indications, and to develop appropriateness initiatives and guidelines
for using this surgical procedure by organizations concerned with health care
policy. I review the current status of these 3 areas of endeavor. In those areas
where studies are complete, carotid endarterectomy has been shown to be highly
effective in reducing stroke risk. Risk reduction has ranged from 66% to 80%
compared with medical management. Based on these sources and findings, I
present a list of indications for the operation for surgeons who are able to do the
operation safely and within the guidelines established by the Stroke Council of
the American Heart Association
Keywords: AD HOC
COMMITTEE/COMMUNITY/FOR-CARDIOVASCULAR-SURGERY/GUID
ELINES/HOSPITAL
PRIVILEGES/OPERATIONS/PROGNOSIS/STENOSIS/TRANSIENT
ISCHEMIC ATTACKS/VASCULAR-SURGERY
Rothrock, J.F. and Hart, R.G. (1994), Ticlopidine Hydrochloride Use and Threatened
Stroke. Western Journal of Medicine, 160 (1), 43-47.
Abstract: Ticlopidine hydrochloride is an antiplatelet agent of proven antithrombotic
efficacy that in December 1991 became available for general clinical use in the
United States. The relative value of ticlopidine compared with aspirin, also an
effective antiplatelet agent, has become a key clinical issue. Whereas ticlopidine
is somewhat more effective than aspirin for preventing stroke in certain
populations, it is also more expensive and potentially toxic. We recommend its
use for patients with threatened stroke who are intolerant of aspirin and for
patients who have cerebral ischemic symptoms despite aspirin therapy. Patients
surviving major ischemic stroke make up a third group for whom ticlopidine use
may be recommended in preference to aspirin. The use of ticlopidine rather than
aspirin in patients with other cerebrovascular conditions is not strongly supported
by existing data. The risk-benefit-cost equation involving ticlopidine versus other
antithrombotic therapies is complex, rendering a wide range of acceptable
management practices. If reliable laboratory monitoring for neutropenia during
the first 3 months of therapy is not feasible, ticlopidine should not be used
Keywords: ANTIPLATELET
AGENT/ASPIRIN/CALIFORNIA/CEREBROVASCULAR-DISEASE/DRUG/I
NTERMITTENT CLAUDICATION/ischemic
stroke/PREVENTION/RATES/SEVERE
APLASTIC-ANEMIA/stroke/THERAPY/ticlopidine/TRIAL
Gress, D.R. (1994), Stroke - Revolution in Therapy. Western Journal of Medicine, 161
(3), 288-291.
Abstract: Stroke remains the third leading cause of death in this country, although recent
advances in both clinical and basic science research have revolutionized the
concept of stroke. Studies of primary and secondary stroke prevention have now
documented the means to prevent thousands of cases of stroke each year. Three
distinct strategies are evolving for intervention in the acute stroke process.
Evidence is clear that ischemia leads to a toxic accumulation of intracellular
calcium, in part mediated by excitatory neurotransmitters such as glutamate.
Glutamate antagonists have shown clear benefit in experimental stroke models,
and early clinical trials are underway Acute revascularization to restore perfusion
is also feasible and may minimize the extent of infarction. Studies of fibrinolytic
agents are promising, with randomized clinical studies being done. While
reperfusion is desired, it may be associated with additional neuronal injury. The
development of anaerobic metabolism followed by reperfusion and aerobic
conditions favors oxidation and free-radical formation. This mechanism of injury
can be decreased by agents known to scavenge free radicals, and clinical trials
are also testing this. This revolution in the understanding of ischemia, as well as
the outpouring of new pharmacologic agents, is making stroke a true neurologic
emergency requiring immediate intervention
Keywords: CALIFORNIA/clinical
trials/DAMAGE/development/DISEASE/formation/free
radicals/FREE-RADICALS/GERBILS/glutamate/ISCHEMIA/MINUTES/preve
ntion/stroke/stroke prevention/TISSUE
PLASMINOGEN-ACTIVATOR/trials/URGENT THERAPY
Stettin, G.D. (1995), Treatment of Nonvalvular Atrial-Fibrillation. Western Journal of
Medicine, 162 (4), 331-339.
Abstract: Nonvalvular atrial fibrillation is an increasingly common condition. It may
cause disabling symptoms and is an important risk factor for stroke. The goals of
treatment include the relief and prevention of rate- and rhythm-related symptoms
and the prevention of stroke and systemic emboli. Three principal treatments
should be considered: pharmacologic rate control, cardioversion and
antiarrhythmic therapy to restore and maintain sinus rhythm, and prophylactic
anticoagulation or antiplatelet therapy to reduce the risk of stroke. The risks and
benefits of each of these therapies have been reviewed. Symptoms, if present,
can often be managed safely with rate- directed therapy alone. Until issues
regarding safety and long-term efficacy are resolved, cardioversion and
antiarrhythmic therapy should be limited to those patients whose symptoms
cannot otherwise be controlled. The benefits of warfarin anticoagulation for the
primary and secondary prevention of stroke in nonvalvular atrial fibrillation have
been demonstrated convincingly by several randomized clinical trials. These
benefits must be weighed against the real risk of major hemorrhage. For patients
at low risk of stroke, the use of aspirin may be an acceptable alternative to
warfarin sodium therapy
Keywords: anticoagulation/antiplatelet therapy/aspirin/atrial
fibrillation/cardioversion/clinical trials/CURRENT ELECTRICAL
CARDIOVERSION/DIGOXIN/emboli/fibrillation/FLUTTER/FOLLOW-UP/FR
AMINGHAM/hemorrhage/MAINTENANCE/prevention/RANDOMIZED
TRIAL/RECENT-ONSET/risk/safety/secondary prevention/SINUS
RHYTHM/stroke/STROKE-REGISTRY/treatment/trials/warfarin
Albers, G.W. (1997), Management of acute ischemic stroke - An update for primary care
physicians. Western Journal of Medicine, 166 (4), 253-262.
Abstract: Few areas of medicine have had as many major advances in recent years as the
treatment and prevention of ischemic stroke. During the 1990s- ''the decade of
the brain'' -carotid endarterectomy was demonstrated to be effective for
preventing stroke in patients with significant carotid stenosis. Large clinical
studies have documented the effectiveness of new antiplatelet agents and oral
anticoagulant therapy for stroke prevention in specific patient groups, and
recently tissue plasminogen activator was approved for the treatment of acute
ischemic stroke. Because the use of these new therapies is restricted to specific
patient subgroups, the accurate determination of the cause of stroke is now
mandatory. Fortunately, advances in diagnostic methods, including cardiac and
vascular ultrasonographic techniques and brain imaging, facilitate the
determination of the stroke subtype in most patients. Additional advances in
stroke treatment and prevention are on the immediate horizon. New therapeutic
agents, including neuroprotective medications, and new treatment modalities
such as cerebral angioplasty are promising investigational therapies
Keywords: acute ischemic
stroke/AMERICAN-HEART-ASSOCIATION/angioplasty/anticoagulant/antiplat
elet agents/ASPIRIN/brain/carotid/carotid endarterectomy/carotid
stenosis/cerebral/COUNCIL/endarterectomy/GLUTAMATE/GUIDELINES/HE
PARIN/ischemic/ischemic stroke/oral anticoagulant therapy/plasminogen
activator/PREVENTION/primary care/STENOSIS/stroke/stroke
prevention/stroke treatment/therapy/treatment/TRIAL/vascular
LaCroix, A.Z., Newton, K.M., Leveille, S.G. and Wallace, J. (1997), Healthy aging - A
women's issue. Western Journal of Medicine, 167 (4), 220-232.
Abstract: The life expectancy of women currently exceeds that of men by almost seven
years, yet women spend approximately twice as many years disabled prior to
death as their male counterparts. The diseases that account for death and health
care utilization in older women (heart disease, cancer, stroke, fracture,
pneumonia, osteoarthritis, cataracts) are also major contributors to disability.
This paper reviews the scientific evidence that supports specific
recommendations for older women that may prevent or delay these conditions for
as long as possible. Risk factors for falls and fractures should be assessed and,
where possible, modified. Adequate intakes of calcium, vitamin D, fruits, and
vegetables should be encouraged. Weight should be monitored and weight loss
discouraged for most women. Screening for B12 deficiency is recommended.
Engaging women in a shared decision-making process about the use of hormone
replacement therapy for longterm prevention of heart disease and fractures is
important, as is regular screening for breast and cole-rectal cancer. Women
should be encouraged to engage in enjoyable physical activities, including
walking, for 30 minutes daily. These interventions have the potential to delay the
onset and improve the course of many chronic conditions that prevail in later life
Keywords: aging/BONE-MINERAL DENSITY/CORONARY
HEART-DISEASE/decision-making/diseases/ESTROGEN
REPLACEMENT/fractures/health/health care/heart/HIP FRACTURE/hormone
replacement therapy/life expectancy/MAINTAINING MOBILITY/OLDER
ADULTS/OSTEOPOROTIC FRACTURES/PHYSICAL-
ACTIVITY/POSTMENOPAUSAL WOMEN/prevention/RANDOMIZED
TRIAL/stroke/therapy/women
Ragland, D.R., Buffler, P.A., Reingold, A.L., Syme, S.L. and Buffler, M.L. (1998),
Disease and injury in California with projections to the year 2007 - Implications
for medical education. Western Journal of Medicine, 168 (5), 378-399.
Abstract: In this article, as part of an evaluation of the future of medical education in
California, we characterize the distribution of disease and injury in California;
identify major factors that affect the epidemiology of disease and injury in
California, and project the burden of disease and injury for California's
population to the year 2007. Our goal is to elucidate the major causes of illness
and disability at present and in the near future in order to focus state resources on
the interventions likely to have the greatest impact. Data from various
governmental agencies were utilized; the base year, 1993, is the most recent year
with sufficient information available when this report was prepared. Several
major risk factors have decreased, including smoking (30% decline from 1984 to
1993) and drinking and driving. However, hypertension prevalence has not
changed, and overweight has increased dramatically. Poverty continues to burden
about 15% of Californians, with poverty highest among children. During 1993,
220,271 Californians died, with 3 major causes accounting for 61% of these
deaths: coronary heart disease (31%), cancer (23%), and stroke (7%). In terms of
potential years of life lost (years lost before age 65), the most important causes of
death in 1993 were unintentional injury (756 years lost/100,000 population),
cancer (632 years), and the acquired immunodeficiency syndrome (AIDS; 491
years). Mortality rates were highest among blacks and lowest among Asians.
Overall mortality in California has been declining for decades; ire just 1 decade,
from 1980 to 1991, mortality declined from 780 to 680 deaths per 100,000
population. Several major causes of death have declined, including coronary
heart disease, stroke, unintentional injury, cirrhosis, and suicide, while others
have increased, for example, chronic obstructive lung disease and diabetes
mellitus. Death from AIDS increased dramatically in the past decade, but is
leveling off, and death from cancer is beginning to decline. Rates for overall
mortality and morbidity, and for most specific conditions, should continue to
decline. A projected 28% population increase by 2007 will yield a corresponding
increase in the absolute level of disease cages and death; a disproportionate
increase in younger and older groups will yield increased conditions affecting
young (unintentional injury, AIDS) and older (heart disease, cancer, stroke,
diabetes mellitus) people. Californians should experience overall improved
health in coming years, reaping benefits of reduced environmental and
behavioral risk factors as well as improved medical treatment and rehabilitation.
Coordinated strategies for health promotion, disease prevention, delivery of
medical treatment, and rehabilitation are needed to maintain and improve present
levels of health across the life span
Keywords: age/coronary heart disease/diabetes/diabetes
mellitus/education/epidemiology/evaluation/HEALTH/health
promotion/heart/hypertension/medical
treatment/morbidity/mortality/prevention/rehabilitation/risk/risk
factors/smoking/SOCIOECONOMIC-STATUS/stroke/treatment
Lees, K.R., Bath, P.M.W. and Naylor, A.R. (2000), Secondary prevention of transient
ischemic attack and stroke. Western Journal of Medicine, 173 (4), 254-258
Keywords: ischemic/prevention/stroke/transient/transient ischemic attack
Lechner, H., Schmidt, R., Reinhart, B., Grieshofer, P., Eber, B., Fazekas, F.,
Schumacher, M., Horner, S., Freidl, W., Niederkorn, K. and Koch, M. (1993),
Cerebrovascular Risk-Factors in An Elderly Austrian Population - 1St Year
Results of the Austrian-Stroke-Prevention-Study (Asps). Wiener Klinische
Wochenschrift, 105 (14), 398-403.
Abstract: During the first year the Austrian Stroke Prevention Study enrolled 599
volunteers without clinical signs or symptoms of cerebrovascular disease aged 50
to 70 years. Study participants were randomly selected, from the official register
of the city of Graz. The rate of positive response was 26.9 per cent. All subjects
underwent an extensive risk factor screening with Duplex scanning of the carotid
arteries obtained from a subset of 176 individuals. The prevalence of
well-documented cerebrovascular risk factors was 40.6% for arterial
hypertension, 35.4% for cardiac disease, 8.5% for diabetes mellitus und 3% for
elevated haematocrit. The less well- documented cerebrovascular risk factors
dyslipidemia, overweight, physical inactivity, hyperfibrinogenemia and smoking
were noted in 75%, 33.7%, 27.2%, 14.9% and 12.2% of subjects, respectively.
Multiple well-documented risk factors were noted in 23.7% of the examined
volunteers. Multiple linear regression analysis revealed body mass index (p <
0.0001) and age (p < 0.0001) as independent predictors of the frequency of
well-documented risk factors observed in any individual. Atherosclerotic carotid
disease occurred in 61.9% of study participants investigated by Doppler
sonography and was significantly associated with age (p < 0.00001), life-time
tobacco consumption (p < 0.0001) and the concentration of apolipoprotein B (p <
0.05). This study demonstrates high prevalence rates of vascular risk factors in
an elderly Austrian community. Implications for stroke prevention result from
the conjunction of overweight and frequency of risk factors noted in any study
participant, as well as from the relationship of carotid atherosclerosis to smoking
and dyslipidemia
Keywords:
ATHEROSCLEROSIS/BLOOD-PRESSURE/CEREBRAL-HEMORRHAGE/C
EREBROVASCULAR RISK FACTORS/DISEASE/DOPPLER
SONOGRAPHY/INFARCTION/LIPIDS/PREVALENCE
Deecke, L. and Zeiler, K. (1993), Low-Dose Acetylsalicylic-Acid (Asa) As Secondary
Prophylaxis After Ischemic Cerebrovascular Events. Wiener Klinische
Wochenschrift, 105 (17), 485-487.
Abstract: Acetylsalicylic acid (ASA) as secondary prophylaxis after ischaemic
cerebrovascular events is well established and its efficacy unquestioned since
over 15 years. According to the results of two European studies a dose of 100mg
per day is sufficient to reduce the incidence of further stroke, myocardial
infarction, and death due to cardiovascular causes. This satisfactory response to
low-dose ASA applies to patients with transient ischaemic attacks, reversible
ischaemic events, and minor strokes. In cases with severe cardiac disease,
however, a high dosage of ASA or anticoagulation therapy may be necessary to
prevent further vascular events
Keywords: ACETYLSALICYLIC
ACID/ASPIRIN/CEREBRAL-ISCHEMIA/CONTROLLED
TRIAL/PREVENTION/PROPHYLAXIS/STROKE
Polzl, G. and Kuhn, P. (1997), Cerebrovascular event: A rational algorithm for
cardiologic evaluation and treatment. Wiener Klinische Wochenschrift, 109 (10),
366-372.
Abstract: Stroke continues to be a serious socioeconomic problem in the industrialized
countries, The three disease processes responsible for most ischemic
cerebrovascular events (CVE) are large-vessel and small-vessel atherothrombotic
disease and, in up to 20-30% of cases. cardiac embolism. Data from the literature
show that life expectancy after CVE is mainly dependent on the coexistence of
cardiac disease. It is the responsibility of the cardiologist to exclude or identify
the source of cardiac embolism and to initiate adequate treatment for the
prevention of recurrences, as well as to diagnose, and treat any concomitant
cardiac disease which may be present. We propose a cost-effective algorithmic
approach to help the cardiologist in the diagnosis and treatment of patients with
transient ischemic attacks and ischemic stroke
Keywords: ARTERY/CARDIAC SOURCE/cerebrovascular/cerebrovascular
event/diagnosis/diagnostic
algorithm/DISEASE/EMBOLISM/evaluation/improvement of
prognosis/ischemic/ischemic stroke/LACUNAR INFARCTION/life
expectancy/prevention/prevention of recurrence/RISK/stroke/STROKE
PATIENTS/SUBTYPES/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/transient/TRANSIENT ISCHEMIC
ATTACKS/treatment
Sinzinger, H. and Kritz, H. (1997), Acetylsalicylic acid after myocardial infarction.
Wiener Klinische Wochenschrift, 109 25-28.
Abstract: There is no doubt about the positive influence of acetylsalicylic acid on
vascular disease. The antithrombotic therapy with acetylsalicylic acid is a
fundamental of secondary prevention of vascular events, especially in nonfatal
myocardial infarction, instable angina pectoris, stroke and in patients with
amaurosis fugax. Clinical studies done since 1990 about the effect of a low-dose
therapy confirmed the experimental results, which showed that 25-50 mg
acetylsalicylic acid per day are enough, to suppress platelet function as far as
necessary, without influencing the protective function of prostacyclin synthesis.
Side-effects can be reduced to a minimum with a reduced dosage. The
wide-spread use of a low-dose acetylsalicylic acid therapy in primary prevention
especially in patients at high risk has to be reevaluated in further studies
Keywords: acetylsalicylic acid/ACUTE CORONARY
SYNDROMES/angina/antithrombotic therapy/ARTERY
DISEASE/ASPIRIN/infarction/MECHANISMS/MORTALITY/myocardial
infarction/PATHOGENESIS/PLATELETS/PREVENTION/primary
prevention/risk/secondary prevention/stroke/therapy/TRIAL/UNSTABLE
ANGINA/vascular/vascular disease
Esterbauer, E., Anders, I., Ladurner, G., Huemer, M. and Wranek, U. (2001), Stress
coping strategies and heart diseases, obesity, nicotine and alcohol consumption.
Wiener Klinische Wochenschrift, 113 (23-24), 947-953.
Abstract: Introduction: Heart diseases, obesity, nicotine and alcohol abuse are all
relevant stroke risk factors. Some studies refer to stress stimuli and coping
strategies as modulators for stroke risk factors. Aim: This study investigated
differences between stroke prevention patients with heart complaints, obesity,
nicotine or alcohol abuse and stroke prevention patients without these risk factors.
Method: 5993 stroke prevention patients participated in a medical-psychological
stroke risk investigation at the Christian Doppler Clinic in Salzburg. The
differences in coping strategies between groups of patients with risk factors and
groups without were investigated by means of multivariate analysis of
covariance. Results: Significant differences in stress coping were found for every
risk factor (split by sex). Men suffering from heart diseases showed higher values
in the coping strategy tendency to flee. Women with heart complaints
demonstrated significantly lower values in minimising by comparison.
Obese/adipose patients performed significantly higher values in the coping
strategies vicarious satisfaction and aggression (men). Nicotine abusing
prevention patients showed significantly higher values in drug intake and lower
scores in continued thoughts. Non-smoking men furthermore reached higher
values in vicarious satisfaction and non-smoking women in minimising. Persons
not consuming alcohol demonstrated higher drug intake and aggression (men).
Wine drinkers showed lower scores of self-pity and increased situation control
attempts (women). Conclusion: Prevention patients with risk factors
demonstrated significant differences in coping strategies in comparison to those
without risk factors. Persons with heart diseases demonstrate a more defensive
behaviour. The risk factors obesity, nicotine and alcohol consumption are
associated with a risk factor supporting stress coping behaviour. The
modification of the coping strategies drug intake and vicarious satisfaction
towards a more active confrontation could probably influence various risk factors
(nicotine, alcohol consumption, obesity) simultaneously
Keywords: ADOLESCENTS/alcohol/alcohol
consumption/Austria/BLOOD-PRESSURE/CIGARETTE-SMOKING/control/di
seases/Doppler/drug/heart/heart disease/heart
diseases/LIFE-STYLE/men/MIDDLE-AGED MEN/multivariate
analysis/nicotine/obesity/PREVENTION/risk/risk factor/risk
factors/RISK-FACTORS/sex/stress/stress coping/STROKE/stroke/stroke
prevention/WOMEN/YOUNG- ADULTS
Anders, I., Esterbauer, E., Ladurner, G. and Wranek, U. (2001), Stress coping styles and
blood viscosity in stroke prevention patients. Wiener Klinische Wochenschrift,
113 (10), 378-383.
Abstract: Introduction: Hematocrit, fibrinogen and blood viscosity influence blood
fluidity and are well known stroke risk factors. Studies have shown relationships
between these factors and psychological stress. Aim: The aim of this study was
to investigate how stroke risk patients with increased hematocrit, increased
fibrinogen, or increased plasma viscosity differ from patients free of these risk
factors in their ways of stress coping. Method: 6503 persons participated in the
following stroke risk investigations: biographical and risk factor orientated
anamnesis, neurological status investigation, laboratory investigation,
sonographic investigation and psychological investigation. After assessment of
several risk factors, differences in stress coping between risk factor and non-risk
factor groups were investigated by means of the t-test and the Wilcoxon-test.
Results: Men with pathological hematocrit showed significantly higher scores in
the coping strategy resignation and a tendency to less positive self instruction
and response control attempts. Women with higher values of hematocrit
demonstrated higher values in resignation and drug intake. Men with higher
fibrinogen showed significantly higher scores in distraction, vicarious
satisfaction, minimising by comparison and tendency to flee as well as a
tendency towards drug intake. Women with increased fibrinogen showed no
differences. Men with normal plasma viscosity had significantly higher values in
tendency to flee and tendencially in desire for social support and lower values in
minimising by comparison. Women with increased plasma viscosity
demonstrated higher scores in resignation and aggression. Conclusions: The
presence of elevated values in parameters of blood viscosity coincides with
increased passive and defensive coping mechanisms, whereas non-risk factor
persons show raised values in active coping styles
Keywords: ACUTE PSYCHOLOGICAL STRESS/Austria/blood
viscosity/COAGULATION/control/FIBRINOGEN/fibrinogen/FIBRINOLYSIS/
hematocrit/HEMOCONCENTRATION/mechanisms/prevention/risk/RISK
FACTOR/risk factors/social support/status/stress/stress coping/stroke/stroke
prevention/viscosity/WOMEN
Hirschl, M., Palkovits, J., Katzenschlager, R., Bialek, C. and Kundi, M. (2002), Duplex
sonographic predictors of restenosis, vascular and neurological events after
carotid endarterectomy. Wiener Klinische Wochenschrift, 114 (8-9), 327-333.
Abstract: Background: Although excellent short- and long-term results have been
achieved with surgery in extracranial internal carotid artery stenosis, recurrent
stenosis continues to play an important role in post-endarterectomy. Therefore, a
close follow-up of patients is warranted. The value of postoperative duplex
sonographic evaluations in postoperative follow-up is highly disputed. The study
evaluates duplex sonographic parameters as predictors of carotid restenosis,
general vascular events and ipsilateral neurological symptoms, in order to assess
the role of duplex sonography in follow-up after carotid endarterectomy.
Methods: A retrospective cohort study with a follow-up period ranging from 7
months to 7.5 years was performed in 150 patients who underwent carotid
endarterectomy. Pre- and postoperative duplex sonographic and clinical data
were analyzed by life-table analysis and multivariate Cox regression with respect
to carotid restenosis, vascular and ipsilateral neurological events. Main findings:
Duplex sonographic predictors of carotid restenosis include the postoperative
degree of stenosis (residual stenosis greater than or equal to 30% or more:
relative risk (RR) = 1.56; 1.05- 2.32), pre- to postoperative reduction of stenosis
(higher than 50%: RR = 0.61; 0.45-0.83), and residual plaques in the operated
carotid artery (RR = 1.96; 1.31-2.93). Some of these morphological parameters
such as reduction of stenosis are also predictive of vascular events (RR = 1.25;
1.01-1.56) and ipsilateral neurological events (RR = 1.52; 1.05-2.19). In 12 cases
restenosis was discovered by duplex sonography and in 3 cases by evaluation of
clinical symptoms. In 5 cases restenosis was treated by repeat surgery.
Contralaterally, progressive or newly developed carotid stenoses were observed
in 17 cases, and only 5 were discovered on the basis of clinical symptoms.
Fourteen contralateral stenoses required surgery. Overall, 12 patients underwent
treatment for stroke prevention on the basis of duplex follow-up findings (8% of
the study population). Conclusions: Postoperative duplex sonography allows for
the identification of patients at risk for carotid restenosis as well as those at risk
for other vascular events, As expected, regular examinations permit early
detection of restenosis requiring surgical treatment. However, a large number of
contralateral stenoses requiring surgical treatment were detected by routine
duplex sonographic examinations. The timing of follow-up intervals may be
oriented towards the perioperative outcome of duplex sonography
Keywords: ACCURACY/ANGIOGRAPHY/ARTERY
STENOSIS/Austria/carotid/carotid artery/carotid artery stenosis/carotid
endarterectomy/cohort study/detection/DISEASE/duplex/duplex
sonography/endarterectomy/evaluation/FOLLOW-UP/internal carotid artery/life
table/MANAGEMENT/outcome/population/postoperative/predictors/prevention/
RECURRENT/relative risk/residual/restenosis/risk/stenosis/STROKE/stroke
prevention/SURGERY/surgical
treatment/SURVEILLANCE/symptoms/timing/treatment/vascular/vascular
events
Knudsen, J.B., Bastain, W., Sefton, C.M., Allen, J.G. and Dickinson, J.P. (1992),
Pharmacokinetics of Ticlopidine During Chronic Oral- Administration to
Healthy-Volunteers and Its Effects on Antipyrine Pharmacokinetics. Xenobiotica,
22 (5), 579-589.
Abstract: 1. The pharmacokinetics of ticlopidine, a novel antithrombotic agent, have
been investigated in 10 healthy volunteers dosed orally with the drug (250 mg 12
hourly for 21 days), to determine the basic pharmacokinetic parameters in
humans, to investigate its accumulation during repeated administration, and to
assess its effects on hepatic drug-metabolizing enzymes. 2. After the first dose,
peak plasma concentrations (median 0.31, range 0.08-0.80mg/l) were generally
found at 2 h. The levels decreased rapidly to a median concentration of 0.087
mg/l by 4 h then declined to 0.022 (range<0.005-0.128) mg/l at 12 h after
administration, with apparent half-lives of approx. 4 h. The median AUC value
for this first dosage interval (AUC(tau)) was 0.97 (range 0.41-3.49) mg h l-1. 3.
Pre-dose plasma concentrations indicated that steady state was reached after 5-10
days, and then remained essentially unchanged through to the end of the study.
From 30 h after the final dose, drug levels declined exponentially with a median
half- life of 28.8 (range less-than-or-equal-to 20-50) h. 4. Following the final
dose, the median peak concentration and AUC(tau) were 0.99(range
0.22-2.12)mg/l and 4.06 (range 0.90- 15.2) mg h l-1 respectively. Based on AUC
values, the mean accumulation factor+/-SD was 3.73+/-1.14. 5. The metabolic
status of subjects was assessed by administration of single doses of antipyrine
(700 mg orally) 7 days before the first dose of ticlopidine and 2 days after the
final dose. Treatment with ticlopidine decreased antipyrine clearance,
demonstrating that it inhibited drug-metabolizing enzymes. Significant
correlations (r2=0.84, p<0.01) were found between the AUC values for
ticlopidine and antipyrine, indicating that the interindividual variation in the
pharmacokinetics of ticlopidine are explained by differences in metabolic
clearance
Keywords: PLATELET-AGGREGATION/PREVENTION/STROKE
Park, D.C., Nam, H.S., Lim, S.R., Lee, P.H., Heo, J.H., Lee, B.I. and Kim, D.I. (2000),
MRI features of infarcts with potential cardiac source of embolism in the Yonsei
Stroke Registry (YSR), Korea. Yonsei Medical Journal, 41 (4), 431-435.
Abstract: The determination of the embolic source is crucial to understanding the
pathogenesis of ischemic stroke, the initiation of appropriate therapy, and the
prevention of recurrent infarctions. In this study we undertook to identify the
characteristic features on magnetic resonance images of patients who had
suffered from stroke due co cardiac embolism (CE), as classified by TOAST
(possible and probable). We retrospectively studied magnetic resonance imaging
(MRI) findings of patients with ischemic stroke from the Yonsei Stroke Registry
(YSR). On the basis of the TOAST classification, 92 patients were identified to
have a potential cardiac source of embolism (PCSE), in which 69 patients were
found to have high-risk PCSE and 23 patients medium-risk PCSE. To compare
their imaging characteristics, another group of 49 patients who were found to
have had a stroke due to large artery-to-artery (ATA) embolism-common or
internal carotid artery (CCA, ICA)-were identified. Involvement of the
simultaneous superficial and deep territories (58.7%; 6.1%, p<0.001), and
combined new anterior and old posterior circulation (15.2%; 2.0%, p=0.016)
were more frequent in PCSE than ATA embolism. Bilateral anterior hemispheric
involvement was also more frequent in the PCSE group, but it did nor reach
statistical significance (13.0%; 4.1%, p=0.090). ATA embolism tended to
involve only superficial territories compared to PCSE (71.4%; 28.3%, p<0.001).
There were no topographic differences between the high-risk and medium-risk
groups. With respect to the etiology of PCSE in our population, atrial fibrillation
was the most common. Characteristic MRI features of patients with PCSE, which
were not documented previously by computed tomography (CT) included: old
and new, involvement of multiple different vascular territories, bilateral anterior
hemisphere, as well as anterior and posterior circulation. These MRI features,
together with simultaneous superficial and deep territorial involvement, help to
differentiate the underlying embolic sources, whether they are cardiac or ATA in
origin
Keywords: atrial fibrillation/BRAIN INFARCTIONS/carotid/carotid artery/cerebral
infarction/computed
tomography/CT/DATA-BANK/embolism/etiology/fibrillation/high
risk/ischemic/ischemic stroke/magnetic resonance
imaging/MEDICINE/MIDDLE
CEREBRAL-ARTERY/MRI/PATHOGENESIS/population/potential cardiac
source of embolism/prevention/stroke/therapy/TOAST/vascular
Pitsavos, C., Stefanadis, C. and Toutouzas, P. (2000), Contraception in women at high
risk or with established cardiovascular disease. Young Woman at the Rise of the
21St Century: Gynecological and Reproductive Issues in Health and Disease,
900 215-227.
Abstract: Oral contraceptives are one of the most effective and widely used reversible
contraceptive methods, Over 90 million women worldwide, including over 44
million in developing countries, are now using oral contraceptives. Despite their
advantages, there is concern about the links between combined oral
contraceptives and the risk of cardiovascular disease. The risk attributable to oral
contraceptive use in women <35 years of age is small, even if they smoke, but
there are substantially increased risks in older women who both smoke and use
oral contraceptives. Differences between oral contraceptive types ih the relative
risk of venous thromboembolism contribute little to the total cardiovascular
mortality associated with oral contraceptive use, even though the total number of
cardiovascular events is increased. It is important to consider the user's age and
smoking status when determining oral contraceptive-attributable risks. Hormonal
oral contraceptives have changed and now contain lower doses of estrogen and
progestagen
Keywords: age/cardiovascular/cardiovascular disease/cardiovascular
events/cardiovascular mortality/disease/DISORDERS/estrogen/high
risk/HORMONAL CONTRACEPTION/mortality/NEW-YORK/oral
contraceptives/ORAL-CONTRACEPTIVES/PREVENTION/relative
risk/risk/smoking/status/STROKE/thromboembolism/use/venous
thromboembolism/women
Hrastnik, F. (1988), Prevention of Stroke. Zdravstveni Vestnik, 57 (4), 127-129
Feurle, G.E., Bartz, K.O. and Schmitt-Graff, A. (1999), Lymphocytic colitis, induced by
ticlopidine. Zeitschrift fur Gastroenterologie, 37 (11), 1105-1108.
Abstract: Lymphocytic colitis is a chronic inflammatory colonic disease characterized
by watery diarrhea and a dense infiltration of the colonic mucosa with
lymphocytes. The etiology is unknown but an immune reaction to various
immunostimulatory agents including pathogenic or commensal bacteria, products
of bacterial metabolism of dietary degradation, or antigens derived directly from
the diet, and autoimmune phenomena are discussed. We observed a patient with
all features of lymphocytic colitis characterized by a prominent intraepithelial
T-cell component. The colitis resolved completely when therapy with ticlopidine
- an agent inhibiting platelet aggregation - was stopped. This observation
suggests that medical history concerning drug ingestion may reveal the etiology
of lymphocytic colitis and allows cure of this otherwise difficult to treat disorder
Keywords: aggregation/case report/CHRONIC DIARRHEA/COLLAGENOUS
COLITIS/diet/drug-induced/EFFICACY/etiology/FORMS/Germany/history/intr
aepithelial lymphocytes/lymphocytic colitis/metabolism/MICROSCOPIC
COLITIS/microscopic colitis/PHARMACOLOGY/platelet
aggregation/PREVENTION/STROKE/T-lymphocytes/therapy/ticlopidine
Berent, R., Hinterholzer, G., Hobling, W., Auer, J., Haidenthaler, A. and Knoflach, P.
(2000), Cholestatic hepatitis due to a therapy with ticlopidine. Zeitschrift fur
Gastroenterologie, 38 (7), 587-591.
Abstract: A 71-year-old man with chronic atrial fibrillation was treated with aspirin
because of a right cerebral infarction. Oral anticoagulation was not initiated
because of a secondary hemorrhagic transformation. Six years later after a left
cerebral transient ischemic attack aspirin was replaced by ticlopidine. Two weeks
after starting ticlopidine he experienced abdominal cramps and diarrhea. Also
dark urine and gray-colored stools were noticed, so that the patient stopped
taking ticlopidine. 40 days after starting ticlopidine he was admitted to our
hospital because of cholestatic jaundice. Serum alkaline phosphatase (305 U/I)
and gamma GT (143 U/I) were elevated, the total bilirubin was 18,6 mg/dl at
peak. COT and GPT were 2,7 fold increased. After exclusion of a viral infection
and autoimmune disease liver biopsy was performed, which showed a
centroacinar cholestasis compatible with a drug- induced liver damage. 79 days
after discontinuation of the drug laboratory signs of cholestasis had disappeared.
In patients in whom long-term therapy with ticlopidine is indicated regularly
laboratory tests and clinical examinations should be done to recognize infrequent
side effects such as the cholestatic hepatitis in time
Keywords: anticoagulation/ANTIPLATELET/aspirin/atrial
fibrillation/Austria/cerebral/cerebral infarction/cholestasis/cholestatic/cholestatic
hepatitis/fibrillation/hepatitis/hospital/INDUCED PROLONGED
CHOLESTASIS/infarction/infection/ischemic/JAUNDICE/LIVER/PREVENTI
ON/STROKE/therapy/ticlopidine/transient/transient ischemic attack/TRIAL
Luttje, D., Krause, D. and Lucke, C. (1993), Secondary Prevention in Clinical Geriatrics.
Zeitschrift fur Gerontologie, 26 (6), 453-458.
Abstract: Secondary prevention is of importance when the patient is already suffering
from a serious disease, e. g., from arterial obstruction causing a stroke or an
amputation, from a hip fracture or other diseases that might threaten his
independence. Secondary prevention covers a wide field of topics. First of all,
the patient must recover from his acute disease. It is important to avoid
complications which are not specific for the disease, but are typical for a
bedridden old person (decubital ulcer, dehydration and others). Prevention also
means to avoid recurrence of the same disease as well as complications that
frequently occur during the clinical course and may influence the outcome
(spasticity in stroke patients, muscular calcification following hip replacement).
Frequently, old persons do not completely recover following serious disease,
they are limited in their daily activities and their capability to leave home.
Secondary prevention tries to fight isolation; the patient should live a meaningful
life
Keywords:
AMPUTATION/complications/diseases/ELDERLY/OSTEOPOROSIS/preventio
n/REHABILITATION/SECONDARY PREVENTION/SOCIAL
ISOLATION/STROKE
Gosch, M. (2000), The role of ACE inhibitors in the treatment of hypertensive elderly
patients. Zeitschrift fur Gerontologie und Geriatrie, 33 (6), 433-437.
Abstract: Hypertension has a high prevalence among elderly patients. Randomised trials
have already demonstrated that treating healthy older persons with hypertension
is highly efficacious. Nevertheless some questions have arisen. On the one hand
the generalisability of these trial results, particulary for older persons with
serious medical comorbidities and poor functional status, is not clear. On the
other hand different antihypertensive drugs have shown to be effective. Which
drug for which patient? Even data from randomised intervention trials showing
that the treatment affects cardiovascular morbidity and mortality, were missing,
ACE inhibitors have been used for more than a decade to treat high blood
pressure. For a younger population the captopril prevention project showed no
differences between ACE inhibitors and conventional antihypertensive treatment
(diuretics, beta-blocker) concerning the primary endpoints (myocardial infarction,
stroke and other cardiovascular death). The STOP-2 study also confirmed these
results for elderly patients. When treating elderly patients one must be aware of
physiological changes with age and the comorbidities. Of significance among
this patient group is declining renal function. Admissions for uraemia that are
related to the use of ACE inhibitors are still commonplace, although many cases
are preventable by monitoring renal function, but guidelines are still missing.
Concerning the comorbidities ACE inhibitors have benefits compared to other
antihypertensive drugs, especially in cases of heart failure, diabetes and coronary
heart disease
Keywords: ACE inhibitors/age/angiotensin-converting-enzyme inhibitor
hypertension/antihypertensive drugs/antihypertensive treatment/Austria/blood
pressure/captopril/cardiovascular/cardiovascular
morbidity/comorbidities/CONVERTING-ENZYME-INHIBITORS/coronary
heart disease/death/diabetes/disease/diuretics/drugs/elderly/elderly
patients/functional status/guidelines/heart/heart disease/heart
failure/HEART-FAILURE/high blood
pressure/hypertension/infarction/LIFE/medical/monitoring/MORBIDITY/MORT
ALITY/myocardial/myocardial
infarction/population/prevalence/prevention/primary/PROJECT/QUALITY/RA
NDOMIZED TRIAL/renal/renal
function/status/stroke/THERAPY/treatment/trial/trials/use
Renteln-Kruse, W., Nogaschewski, K. and Meier-Baumgartner, H.P. (2002), Knowledge
of disease, expectations in and judgements about therapy in elderly stroke
patients and their proxies - a prospective study during in-hospital treatment.
Zeitschrift fur Gerontologie und Geriatrie, 35 (3), 241-249.
Abstract: Fourty-five stroke patients and their 45 proxies were interviewed after the
patients' hospital admission and before discharge. The topics of the interviews
were disease knowledge, expectations in and judgement about therapy,
estimation of functional health status (CCOP/WONCA Charts), and prognosis.
The patients and proxies were also asked to name the patient's actual three most
important health problems. The depressive symptomatology in the patients
(geriatric depression scale) and their ADL status (Barthel Index) were evaluated
on admission and before hospital discharge. The proxies' general knowledge of
disease was superior compared to that of the patients. There were knowledge
deficits regarding individual risk factors and secondary prevention, in particular.
Information was predominantly obtained from physicians. However, an
additional need for information on prognosis and prevention, in particular, was
expressed by patients and proxies before hospital discharge. There was a high
agreement between the patients and their proxies in mentioning the patients'
actual three most important health problems, apart from psychological problems.
These were mentioned only by the proxies but not by the patients themselves.
Depressive symptomatology in the patients increased significantly. There were
associations of depression with the level of the Barthel Index score and the
patients' self-estimation of functional health status before and after the stroke.
Full recovery was expected by one half of the patients, on admission. The
patients' primary therapeutic goal was the ability to walk again. Their ADL status
improved significantly, as measured by a mean increase in the Barthel Index
score by 22 points. The patients and their proxies, as well, judged the result of
treatment equally high. The proxies' total satisfaction with patient care was
significantly related to their ratings of separate parts of patient care regarding
nurses, therapists, and physicians, to their expectations in therapy, and the
satisfaction of their own personal needs. The results of the study revealed a
particular need for information on prognosis and secondary prevention of stroke.
Furthermore, depression and coping with consequences of the disease should be
important issues in counselling of stroke patients and their proxies. The results
regarding patient and proxy satisfaction with care were of importance for internal
discussion in the clinic
Keywords: ADL/BURDEN/CARERS/depression/disease/elderly/expectations in and
judgement about therapy patient and proxy
satisfaction/Germany/health/hospital/IMPACT/knowledge/knowledge of
disease/prevention/primary/prognosis/prospective study/proxies/risk/risk
factors/SATISFACTION/SCALE/secondary/secondary
prevention/status/stroke/stroke patients/therapy/treatment
Kottkamp, H., Willems, S., Hindricks, G., Chen, X., Haverkamp, W., Hasfeld, M.,
Borggrefe, M. and Breithardt, G. (1993), Oral Anticoagulation for Prevention of
Thromboembolism in Nonrheumatic Atrial-Fibrillation - Indications, Efficacy,
and Risk. Zeitschrift fur Kardiologie, 82 (11), 667-673.
Abstract: Oral anticoagulation in patients with rheumatic heart disease tor prevention of
systemic thromboembolism is accepted clinical practice. The incidence of stroke
in patients with nonrheumatic atrial fibrillation is about five times the rate of
patients in sinus rhythm. However, contradictory findings in several small
retrospective studies have precluded determination of a gold standard for patients
with nonrheumatic atrial fibrillation so far. Recently, the results of five
prospective, placebo- controlled studies in patients with nonrheumatic atrial
fibrillation treated with anticoagulation have been published. A consistent risk
reduction of thromboembolism ranging from 37 to 87% in patients treated with
warfarin was reported. This risk reduction occurred in excess of a relatively low
incidence of intracerebral and/or fatal bleeding complications. The efficacy of
prevention of thromboembolism was comparable for high intensity
anticoagulation (International Normalized Ratio (INR) 2.8-4.2) and low dose
anticoagulation (INR 1.5-2.7). However, fatal and/or intracerebral bleedings only
occurred with INR greater-than-or-equal-to 2.6. In subgroup analysis, recent
congestive heart failure, arterial hypertension, and previous apoplex or arterial
thromboembolism were independent clinical predictors of increased risk for
thromboembolism, whereas results in patients with chronic and intermittent atrial
fibrillation were comparable. In 69 patients with lone atrial fibrillation, no single
event occurred in the follow-up period. Thus, lone atrial fibrillation does not
seem to carry an increased risk for stroke when strict criteria for diagnosis of
lone atrial fibrillation are applied. In two of the five studies, aspirin was
additionally randomized. Since contradictory findings resulted, the role of aspirin
for prophylaxis of stroke still needs to be determined. However, at present, all
patients with nonrheumatic chronic or intermittent atrial fibrillation should be
considered as candidates for oral anticoagulation for prevention of
thromboembolism, except in young patients with lone atrial fibrillation, which
seems to carry no increased risk of thromboembolism
Keywords:
ASPIRIN/COMPLICATIONS/FRAMINGHAM/INTENSITIES/NONRHEUMA
TIC ATRIAL FIBRILLATION/ORAL
ANTICOAGULATION/POPULATION/PREVENTION OF
THROMBOEMBOLISM/STROKE/SYSTEMIC
EMBOLISM/THERAPY/WARFARIN
Kienast, J. (1994), Prevention of Thromboembolism in Atrial-Fibrillation - Antiplatelet
and Anticoagulant-Therapy. Zeitschrift fur Kardiologie, 83 49-58.
Abstract: Over the past five years, the results of six prospective randomized trials have
set new standards in the primary and secondary prevention of thromboembolism
in nonvalvular (''nonrheumatic'') atrial fibrillation. On the one hand, they have
confirmed the increased risk of stroke in these patients amounting to about 5%
per year and an annual recurrence rate after a recent transient ischaemic attack or
minor stroke of 12%. On the other hand, the results of these trials have
unanimously demonstrated a greater than or equal to 60% risk reduction with
oral anticoagulation at an acceptable risk of major bleeding complications. A
reduced intensity of anticoagulant therapy with a target INR of 2,0 - 3,0 is
effective in most of these patients. Both clinical and echocardiographic features
allow the identification of subgroups at low or high risk of thromboembolic
complications and provide the basis for the individual benefit-to-risk assessment
of anticoagulant therapy. Aspirin is currently recommended as a second choice
therapy for patients who are poor candidates for oral anticoagulants or who are
considered to be at low risk for thromboembolism
Keywords: anticoagulants/anticoagulation/ARTERIAL
EMBOLISM/ASPIRIN/ATRIAL FIBRILLATION/CEREBRAL
INFARCTION/COMPLICATIONS/fibrillation/FRAMINGHAM/HYPERCOAG
ULABLE STATE/MITRAL VALVE DISEASE/ORAL
ANTICOAGULANTS/oral anticoagulation/prevention/randomized
trials/risk/RISK-FACTORS/secondary prevention/STROKE/SYSTEMIC
EMBOLIZATION/THROMBOEMBOLISM/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/transient/trials
Piper, C. and Horstkotte, D. (1998), Intracardiac thrombosis and cardiogenic embolism
in patients with heart valve disease: Predisposition and prevention strategies.
Zeitschrift fur Kardiologie, 87 1-6.
Abstract: For patients with acquired heart valve lesions with increased risk for
intracardiac thrombosis and consequent cardiogenic embolism there is consensus
that oral anticoagulation therapy improves the overall prognosis. In mitral valve
lesions anticoagulation is necessary after manifestation of atrial fibrillation or in
cases of unstable sinus rhythm. The risk for thrombembolic events is increasing
parallel to the enlargement of the left ventricular enddiastolic diameter, the left
atrial size and dropping cardiac index. Spontaneous echo contrast (so called
smoke like echos) indicate a prethrombotic state. In these cases an intensive
anticoagulation is indicated. Aortic valve lesions require anticoagulation after
manifestation of atrial fibrillation, the first manifestation of a thrombembolism or
of spontaneous echo contrast. The risk for thrombembolism is increasing parallel
to the reduction of left ventricular pump function. Life long oral anticoagulation
therapy should be managed by use of the International Normalized Ratio (INR),
and should be individualized taking into account patient related cardiac
morphology and physiology, which may predispose to cardiogenic embolism.
The target INR can range between 2.0 and 4.0
Keywords: ADULTS/anticoagulation/ANTITHROMBOTIC THERAPY/aortic valve
lesions/atrial
fibrillation/ATRIAL-FIBRILLATION/consensus/fibrillation/heart/heart valve
lesions/International Normalized Ratio/mitral valve lesions/oral
anticoagulation/prevention/prognosis/risk/STROKE/thrombosis
Fetsch, T., Burschel, G., Breithardt, G., Engberding, R., Koch, H.P., Lukl, J., Trappe,
H.J. and Treese, N. (1999), Antiarrhythmic drug therapy after DC cardioversion
of chronic atrial fibrillation - rationale and design of the PAFAC trial. Zeitschrift
fur Kardiologie, 88 (3), 195-+.
Abstract: Atrial fibrillation (AF) is the most frequent cardiac arrhythmia. However,
despite manifold publications reflecting numerous clinical trials about treatment
of AF, the management of this arrhythmia is still under controversial. discussion,
in daily clinical work as well as in research. The present study concentrates on
three major questions: 1. How frequent are recurrences of AF in long-term
follow-up? Most of the previous studies used the occurrence of symptoms as a
surrogate parameter for recurrences of AF, despite the expected high rate of
asymptomatic relapses. In the present study a daily transtelephonic ECG
transmission enables a rhythm monitoring independent of symptoms. 2. Is the
frequency of AF recurrences significantly reduced by antiarrhythmic medication?
A direct comparison of class I and III antiarrhythmic drugs, which still are most
frequently used for this indication,and of placebo will answer this question. 3.
How safe is the long-term treatment for the prevention of AF recurrences with
special respect to proarrhythmic effects? The daily transtelephonic ECG
transmission enables a quantitative and qualitative monitoring of tachy- and
bradyarrhythmias independent of symptoms. Additionally, the daily analysis of
ECG measures may detect parameters predicting subsequent life threatening
arrhythmias. The study design provides a prospective, randomised, double- blind,
placebo controlled, multicenter parallel group comparison. In Germany and in
the Czech Republic about 90 hospitals will include 900 patients with documented
chronic AF, age 18 to 80 years, if they are eligible for electrical cardioversion
without concomitant antiarrhythmic drug therapy and if they are anticoagulated
for at least three weeks prior to inclusion. Neither the size of the left atrium nor
the duration of chronic AF are exclusion criteria. A few hours after successful
electrical cardioversion the patients are randomised either to sotalol (2x 160 mg)
or quinidine + verapamil (3x 160 mg 3x 80 mg) or placebo. Starting at the day
after cardioversion, the patient is asked to record and transmit electrocardiograms
of one minute duration at least once a day using his personal transtelephonic
ECG recording unit (Tele-ECG recorder, credit card size), in case of symptoms
as often as necessary. The ECGs can be transmitted at any time by any regular
phone without additional equipment using a toll free number. A custom made,
computer based, fully automated receiving centre is handling the patient calls
interactively with voice control, including a voice recording of the patient's
symptoms. The ECG tracings and the patient's voice messages are subsequently
computer based analysed by experienced technicians. All ECG measures are
stored in a database. In case of AF recurrence, any other relevant arrhythmia or
additional abnormalities (e.g. QT prolongation) the correspondent hospital is
immediately informed by fax. In case of AF recurrence, a subsequent Holter
recording discriminates in paroxysmal and permanent AE Study medication is
ended if either permanent AF or the third episode of paroxysmal AF are detected
or after 12 months of follow-up. Regular follow-up visits are performed monthly.
Major endpoints are the time to first recurrence of AF or the time to death,
secondary parameters are the number of AF recurrences, the time to end of
medication and AF related symptoms. The recruitment started in the last days of
1996. Until the end of June 1998, 424 patients have been randomised. It is
expected to end recruitment in spring 1999 and to close the study in spring 2000.
Final results will be available in summer 2000
Keywords: AF/age/antiarrhythmic drugs/arrhythmia/arrhythmias/asymptomatic/atrial
fibrillation/cardiac arrhythmia/cardioversion/clinical
trials/control/CONVERSION/design/drug
therapy/drugs/fibrillation/FLUTTER/FOLLOW-UP/FRAMINGHAM/hospital/h
ospitals/left
atrium/MAINTENANCE/monitoring/prevention/quinidine/QUINIDINE/recruit
ment/recurrence/SINUS RHYTHM/sotalol/SOTALOL/STROKE/Tele-EGG
recording/therapy/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/treatment/trials
Ochsenfahrt, C., Hemmer, W., Oertel, F. and Hannekum, A. (1999), The surgical
treatment of atrial septal aneurysm with patent foramen ovale in patients with
cerebral ischemia as an alternative to life-long anticoagulant therapy: operative
strategy and results in 5 cases. Zeitschrift fur Kardiologie, 88 (11), 941-947.
Abstract: There is a significantly higher incidence of cerebral ischemia among patients
with an atrial septal aneurysm and/or a patent foramen ovale. According to the
information provided by modern diagnostic procedures - and in particular by
transesophageal echocardiography - two pathogenic mechanisms should be
considered as possible causes of the cerebral ischemia. Thrombi may develop
locally in the left atrium or atrial septal aneurysm and lead to embolization or,
alternatively, thrombi from the inflow region of the inferior vena cava may
become trapped in the atrial septal aneurysm and pass through the patent
foramen ovale to bring about embolization in the arterial bloodstream. Current
treatment consists of life-long anticoagulation with cumarin derivatives in order
to prevent further neurological complications. With this treatment, however, the
risk of producing hemorrhages cannot be regarded as trivial, especially in old
people. Surgical intervention with the insertion of a button device has so far only
been attempted in a few isolated cases, and it is in any case no use if there is only
an atrial septal aneurysm without a patent foramen ovale. As an alternative to
administering anticoagulants for the rest of the patient's life, we operated on five,
cases of atrial septal aneurysm with patent foramen ovale followed by the
appearance of cerebral ischemia. As with the surgical treatment of atrial septal
defects in general, the risk of the operation (or of subsequent complications) is
very slight indeed. No such problems arose in any of our patients, no blood
transfusions were necessary, and after short postoperative treatment they could
all be discharged. For younger patients with little risk from the treatment itself,
we regard surgical intervention in cases of atrial septal aneurysm with a patent
foramen ovale and cerebral ischemia as an important therapeutic alternative
Keywords: aneurysm/anticoagulant/anticoagulant
therapy/anticoagulants/anticoagulation/atrial septal aneurysm/atrial septal
defect/BLEEDING COMPLICATIONS/cerebral/cerebral
ischemia/CEREBROVASCULAR
EVENTS/CLOSURE/complications/echocardiography/ELDERLY
PATIENTS/EMBOLISM/embolization/epidemiology of cerebral
ischemia/foramen ovale/Germany/incidence/ischemia/left atrium/ORAL
ANTICOAGULATION/patent/patent foramen ovale/postoperative/POTENTIAL
CARDIOEMBOLIC SOURCES/PREVENT STROKE/prevention of cerebral
ischemia/risk/side effects of anticoagulants/STROKE RECURRENCE/surgical
treatment/therapy/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/treatment/use
Jung, W. and Luderitz, B. (2000), Implantable atrial defibrillator. Zeitschrift fur
Kardiologie, 89 206-214.
Abstract: Atrial fibrillation (AF) is a frequent and costly health care problem
representing the most common arrythmia resulting in hospital admission. Total
mortality and cardiovascular mortality are significantly increased in patients with
AF compared to controls. In addition to symptoms of palpitations, patients with
AF have an increased risk of stroke and may also develop decreased exercise
tolerance and left ventricular dysfunction. All of the-se problems may be
reversed with restoration and maintenance of sinus rhythm. External electrical
cardioversion has been a remarkably effective and safe method for termination of
this arrhythmia. Originally described by Lown et al. in 1963, it has been a well
accepted mode of acute therapy. However, this technique requires general
anesthesia or heavy sedation. Internal atrial defibrillation has been evaluated as
an alternative approach to the external technique for over 2 decades. Recent
studies have shown that low-energy internal atrial defibrillation using biphasic
shocks is an effective and safe means in restoring sinus rhythm in patients with
AF and should be considered especially in patients in whom external
cardioversion attempts have failed. Implantable Atrial Defribrillator: Recently, a
stand alone IAD, the Metrix(TM) System (models 3000 and 3820), has entered
clinical investigation. Atrial defibrillation is accomplished by a shock delivered
between electrodes in the right atrium and the coronary sinus. The right atrium
lead has an active fixation in the right atrium. The coronary sinus lead has a
natural spiral configuration for retention in the coronary sinus, and can be
straightened with a stylet. Both leads are 7 French in diameter and the
defibrillation coils are each 6 cm in length. The electrodes may be placed using
separate leads, or very soon by using a single bipolar lead. A separate bipolar
right ventricular lead is used for R wave synchronization and post shock pacing.
The Metrix(TM) defibrillator can be used to induce AF by using R wave
synchronous shocks and can store intracardiac electrograms (EGMs) for up to 2
minutes from the most recent 6 AF episodes. The device can be programmed into
one of the following operating modes: fully automatic, patient activated, monitor
mode, bradycardia pacing only, and off. As AF is not life-threatening, in the
automatic mode the device is only intermittently active in detecting and treating
AE and this "sleep wake-up" cycle interval is programmable. The device
employs extensive processing both for detection and R wave synchronization. In
April 1996, the phase I Metrix(TM) multicenter clinical trial was started. As of
May 1997, a total of 51 Metrix(TM) systems had been implanted as part of the
phase I multicenter clinical trial. Preliminary data suggest that both defibrillation
thresholds and electrograms are stable over time (implant to 3 months).
Detection accuracy has been excellent (100 % specificity, 92.3 % sensitivity) and
there have been no errors of R wave selection for synchronization. No
proarrhythmias have resulted from over 3700 shocks delivered. The device is
effective in electrically converting 96 % of the spontaneous episodes of AF. In
27 % of episodes several shocks were required because of early recurrence of AF.
In 5 patients, the atrial defibrillator was removed: 2 infections, 1 cardiac
tamponade, 1 permanent loss of telemetry, 1 patient required His-Bundle
ablation because of frequent episodes of drug refractory AF with rapid
ventricular response. Initial clinical experience under controlled conditions with
the Metrix(TM) system suggests that the implantable atrial defibrillator may
offer a therapeutic alternative for a subgroup of patients with drug refractory,
symptomatic, long lasting, and infrequent episodes of AE Further efforts must be
undertaken to reduce the patient discomfort associated with internal atrial
defibrillation in an attempt to make this new therapy acceptable to a larger
patient population with AF. Combined Atrioventricular Defibrillator: Recently, a
new dual-chamber defibrillator, the 7250 Jewel(R) AF AMD, has entered clinical
evaluation. Concern has been raised whether or not a stand alone implantable
atrial defibrillator is safe enough or should provide ventricular backup
defibrillation in the rare case of shock induced ventricular proarrhythmia. The
availability of a dual-chamber defibrillator has reactivated the discussion about
the safety of a stand alone implantable atrial defibrillator. The most important
new features of the 7250 Jewel(R) AF AMD system include dual-chamber
pacing, a new dual-chamber detection criterion for rejection of supraventricular
tachycardias, detection and treatment modalities of atrial arrhythmias, prevention
strategies for atrial arrhythmias. Initial clinical experience with the 7250 Jewel(R)
AF AMD device that combines both detection and treatment in the atrium as well
as in the ventricle indicates a significant improvement in the management of
patients with both supraventricular and ventricular tachyarrhythmias
Keywords: acute/AF/arrhythmia/arrhythmias/atrial arrhythmias/atrial
fibrillation/cardiac/cardiovascular/cardiovascular
mortality/cardioversion/combined atrioventricular
defibrillator/CONVENTIONAL EXTERNAL
CARDIOVERSION/detection/ENERGY INTRACARDIAC
CARDIOVERSION/evaluation/exercise/FIBRILLATION/Germany/health/healt
h care/hospital/implantable atrial defibrillator/internal cardioversion/left
ventricular
dysfunction/mortality/pacing/population/prevention/recurrence/risk/safety/sinus
rhythm/stroke/SYSTEM/therapy/treatment
Budoff, M.J. (2000), Electron beam computed tomography: calcification and lipid
lowering interventions. Zeitschrift fur Kardiologie, 89 130-134.
Abstract: Over 50 % of myocardial infarctions lead to sudden death without any prior
warning signs or previously known coronary disease (1). Thus, persons with
preclinical atherosclerosis must be identified prior to the onset of angina, MI,
stroke or death. It has been estimated that primary prevention can avert more
than 100,000 premature deaths each year in the United States alone and 10 times
that worldwide (2). New modalities are being investigated to look for
atherosclerotic plaque burden, plaque morphology, and endothelial function.
Multiple trials on cholesterol reduction have reproducibly demonstrated a
positive mortality benefit in primary (3, 4) and secondary (5-6) prevention
combining diet with statins. Newer therapies, including antibiotics, antioxidants,
and angiogenesis medications ale being introduced for the possible prevention or
treatment of coronary artery disease. The ability to track the progression or
regression of atherosclerosis non-invasively would allow better evaluation of
these therapies
Keywords:
angina/angiogenesis/ANGIOGRAPHY/antibiotics/antioxidants/atherosclerosis/A
VERAGE CHOLESTEROL
LEVELS/calcification/CALCIUM/cholesterol/computed tomography/coronary
artery disease/coronary calcification/coronary disease/CORONARY-ARTERY
DISEASE/death/diet/disease/EBCT/endothelial
function/evaluation/EVENTS/FOLLOW-UP/HUMAN ATHEROSCLEROTIC
LESIONS/lipid
lowering/MEN/mortality/myocardial/plaque/PRAVASTATIN/prevention/primar
y/primary
prevention/REPRODUCIBILITY/statins/stroke/sudden/treatment/trials/United
States
Carlsson, J., Miketic, S., Flicker, E., Erdogan, A., Haun, S., Cuneo, A. and Tebbe, U.
(2000), Neurologic events in patients with atrial fibrillation: outcome and
prevention practices. Zeitschrift fur Kardiologie, 89 (12), 1090-1097.
Abstract: Background: Atrial fibrillation (AF) is associated with neurologic events
(transient ischemic attack (TIA) and stroke). The objective of the present study
was to determine the outcome of patients with neurological events and atrial
fibrillation (AF) in comparison with patients in sinus rhythm (SR), and to
investigate the primary and secondary prevention practices in patients with
neurological events and AF. Patients and methods: In a prospective,
observational, single center study in a large public, university-affiliated hospital
all patients admitted between 1/97 and 1/98 with acute neurologic events were
registered (n = 369). The association between outcome of neurologic events as
assessed by survival status, functional status (Rankin scale) and severity of event
(European Stroke Scale) and heart rhythm was investigated by use of logistic
regression. Antithrombotic medication on admission and at discharge was
recorded. Results: The mean age of the 369 patients was 75.1+/-10.9 years;
56.1% were female. A TIA was present in 26.2% and stroke in 73.8%. 287
patients (77.8%) were in SR and 82 in AF on admission (22.2%). In-hospital
mortality was 12.7% in all patients. In patients with AE mortality was 23.2% and
9.8% in patients with SR (p = 0.0013). Patients with AF were significantly older
than patients with SR (80.4+/-7.5 versus 73.5+/-11.2 years; p<0.001).
Multivariate analysis identified heart rhythm as an independent predictor of
survival (p<0.01). Patients with AF did suffer from a more severe neurological
deficit on admission and at discharge than patients with SR. In 46.3% of patients
with AF severe dependency was present (Rankin 4/5), while this was the case in
28.5% of patients with SR (p<0.01). The ESS score of patients with AF was
77.4+/-30.6 at discharge compared to 88.1+/-20.3 in patients with SR (p<0.01).
In 50 of 82 patients (61%) AF was previously known. Of these 50 patients 36%
did not receive any kind of antithrombotic treatment and only 12% were
receiving oral anticoagulants before the event. Of 63 surviving patients with AF
32 did not have any contraindications against anticoagulation treatment. At
discharge, 14 (43.8%) of these patients were receiving oral anticoagulants, 17
aspirin or ticlopidine (53.1%) and 1 patient (3.1%) no type of antithrombotic
medication. Conclusions: Neurologic events in patients with AF are more severe
and outcome is significantly poorer than in patients with SR. Anticoagulation as
the effective therapy for primary and secondary prevention of neurologic events
is seriously underused in daily practice
Keywords: acute/ACUTE ISCHEMIC
STROKE/AF/age/anticoagulants/anticoagulation/antithrombotic/ANTITHROM
BOTIC THERAPY/aspirin/atrial
fibrillation/COMMUNITY/dependency/fibrillation/FOLLOW-UP/functional
status/Germany/heart/hospital/HOSPITALS/ischemic/MORTALITY/oral
anticoagulants/outcome/PATTERNS/PREVALENCE/prevention/primary/primar
y and secondary prevention/RISK-FACTORS/secondary/secondary
prevention/severity/sinus
rhythm/status/stroke/survival/therapy/TIA/ticlopidine/transient/transient
ischemic attack/treatment/use/WARFARIN USE
Voller, H., Glatz, J., Taborski, U., Bernardo, A., Dovifat, C., Burkard, G. and Heidinger,
K. (2000), Rationale and design of the self-management of anticoagulation in
patients with non-valvular atrial fibrillation (SMAAF) study. Zeitschrift fur
Kardiologie, 89 (4), 284-288.
Abstract: The objective of this open, randomized, multicenter study is to investigate the
benefits and economic efficiency of self- management of oral anticoagulation in
patients with atrial fibrillation (SMAAF study) in comparison with a group of
patients given conventional care by a general practi tioner or specialist. Two
thousand patients suitable for self-management will be assigned at random to
either the self-management group or the control group. The numbers of
thromboembolic and hemorrhagic complications requiring treatment during the
2-year follow-up period will be recorded as the primary end point. The secondary
endpoint variables will be maintenance of the INR value in the individual target
range, INR variance, the course of complications over time, and the cost
efficiency of self- management compared with the routine procedures. The last
of these parameters will include the diagnostic and/or therapeutic measures
carried out, the duration of inpatient hospital treatment, and the social
consequences (subsequent rehabilitation treatment, inability to work, forced
rentirement). The estimate of the required number of patients was based on the
assumption that during longterm anticoagulant therapy within the framework of
primary and secondary prevention 4 % of patients with chronic non-valvular
atrial fibrillation would have severe thromboembolic of hemorrhagic
complications each year. Since this rate can be halved by selfmanagement, a
one-tailed chi(2)-test of 80 % power and a 5 % significance threshold would
require n = 997 patients per group. The results of the SMAAF study will
establish the socioeconomic benefits of selfmanagement in patients with non-
valvular atrial fibrillation
Keywords: anticoagulant/anticoagulant therapy/anticoagulation/atrial
fibrillation/complications/control/cost/design/fibrillation/Germany/hospital/INR/
non-valvular atrial fibrillation/nonvalvular atrial fibrillation/ORAL
ANTICOAGULATION/prevention/primary/randomized/rehabilitation/secondary
prevention/self-management/STROKE/THERAPY/treatment
Diener, H.C., Darius, H., Bertrand-Hardy, J.M. and Humphreys, M. (2001), Cardiac
events during secondary stroke prevention with dipyridamole. Zeitschrift fur
Kardiologie, 90 (5), 348-351.
Abstract: In a post hoc analysis of the European Stroke Prevention Study 2 (ESPS2), we
investigated whether dipyridamole given as antiplatelet drug in patients with TIA
or stroke increases the risk of cardiac events. ESPS2 was a secondary prevention
trial including 6602 patients with TIA or stroke. Patients were randomized into
one of four treatment arms: 2x25 mg acetylsalicyclic acid (ASA), 2x200 mg slow
release dipyridamole (DP), the combination of DP and ASA and placebo. DP did
not result in a higher number of cardiac events, e.g., angina pectoris, myocardial
infarction or death. The combination of ASA plus DP was superior to either drug
alone in the prevention of strokes
Keywords: acetylsalicyclic acid/angina/angina pectoris/antiplatelet/antiplatelet
drug/aspirin/cardiac/combination/coronary heart
disease/death/dipyridamole/Germany/infarction/myocardial/myocardial
infarction/MYOCARDIAL-ISCHEMIA/prevention/randomized/risk/secondary/s
econdary prevention/secondary stroke prevention/stroke/stroke
prevention/TIA/treatment/trial
Stollberger, C., Finsterer, J., Ernst, G. and Schneider, B. (2002), Is left atrial appendage
occlusion useful for prevention of stroke or embolism in atrial fibrillation?
Zeitschrift fur Kardiologie, 91 (5), 376-379.
Abstract: Since in atrial fibrillation more than 90% of the thrombi are located in the left
atrial appendage, an "elimination" of the left atrial appendage, either by resection
or occlusion, seems an attractive alternative to oral anticoagulation. Although
frequently regarded as an useless appendage, data from animal and human
investigations show that the left atrial appendage may play an important role in
the maintenance and regulation of the cardiac function, especially in arterial
hypertension, atrial fibrillation, coronary heart disease, valvular heart disease and
heart failure. Elimination of the left atrial appendage may impede thirst in
hypovolemia, deteriorate hemodynamic responses to volume or pressure
overload, decrease cardiac output and promote heart failure. Instead of
preventing stroke, the consequences of left atrial appendage elimination may
create new risk factors for stroke and thus might induce more harm than benefit
to patients with atrial fibrillation. As long as the physiologic and
pathophysiologic role of the left atrial appendage is not fully understood, left
atrial appendage elimination should not be an alternative to oral anticoagulation
Keywords: animal/anticoagulation/APPENDECTOMY/arterial/arterial
hypertension/atrial/atrial appendage/atrial fibrillation/Austria/cardiac/cardiac
output/coronary heart disease/disease/embolism/fibrillation/heart/heart
disease/heart failure/human/hypertension/hypovolemia/left atrial
appendage/MAZE
PROCEDURE/MORPHOLOGY/NATRIURETIC-PEPTIDE/OBLITERATION/
oral anticoagulation/prevention/RISK/risk factors/risk factors for
stroke/stroke/stroke Maze procedure/TRANSESOPHAGEAL
ECHOCARDIOGRAPHY/transesophageal echocardiography
Schneider, J., Voit, R., Debus, S., Vanseil, B. and Franke, S. (1995), Carotid
Endarterectomy with Routine Shunting, A Safe Method for Reducing the Risk of
Stroke - Results of 11 Years Experience with 546 Consecutive Elective
Operations. Zentralblatt fur Chirurgie, 120 (8), 624-629.
Abstract: The operative removal of haemodynamical significant carotid artery stenosis
by endarterectomy nowadays is one of the vascular surgical standard procedures.
Purpose of the operation is prevention of ischemic strokes, For a long-term
prognostic advantage the patient has to take the risk of perioperative mortality
and morbidity. While efforts are being made to minimize this risk, the question
of optimal surgical strategy has not get finally been solved. Since 1982 in our
hospital all carotid endarterectomies are carried out with routine insertion of an
intraluminal shunt. The distal intima step of the internal carotid artery is secured
by a running suture and closure of the longitudinal arteriotomy is accomplished
by dacron patch plasty. In this manner 546 successive operations have been
performed under general anaesthesia until 1993. Intra- and postoperative
mortality,vas 0,9% with an ischemic cerebral infarction rate of 1,8% . According
to the preoperative stage of cerebrovascular insufficiency the frequencies for
mortality and perioperative ischemic stroke were 0,6% and 1,3% for CVI I, 0,4%
and 0,7% for CVI II and 2,8% and 5,7% for CVI IV. Apart from perioperative
mortality for patients with CVI IV, these complication rates are clearly below the
suggested limits of the Ad hoc Commitee on Carotid Surgery Standards by the
Stroke Council of the American Heart Association. Routine use of a temporary,
intraluminal shunt in carotid artery operations therefore can be considered as a
safe measure, with complication rates still not underbid by those achieved with
intraoperative cerebral monitoring and selective shunting
Keywords: carotid/CAROTID ENDARTERECTOMY/CAROTID
STENOSIS/CEREBROVASCULAR INSUFFICIENCY
(CVI)/endarterectomy/INTRALUMINAL SHUNTING/ischemic
stroke/morbidity/mortality/prevention/risk/stroke/vascular
Mast, H., Chambless, L.E., Mohr, J.P. and Toole, J.F. (1996), Endarterectomy for
asymptomatic carotid artery stenosis - Results of the ACAS-study. Zentralblatt
fur Chirurgie, 121 (12), 1033-1035.
Abstract: Objective: To determine the effect of endarterectomy on the primary
prevention of ischemic stroke in patients with asymptomatic carotid artery
stenosis. Methods: In a prospective, randomized, multicenter trial 1659 patients
with asymptomatic carotid stenosis of 60 % or more were studied in two
treatment arms (endarterectomy: n=825; medical therapy: n=834). Endpoints
were: (1) ischemic stroke in the vascular territory of the study artery, (2) any
perioperative stroke or any perioperative death. Results: The Kaplan-Meier
5-year-risk estimation showed a relative risk reduction of 53% (confidence
interval: 22 %-72 %) for patients in the surgical arm. The combined
perioperative morbidity and mortality rate was 2.3 %. Conclusion:
Endarterectomy of asymptomatic carotid artery stenosis performed with a
perioperative complication rate of less than 3% reduces the 5-year risk of
ipsilateral stroke
Keywords: asymptomatic/carotid/carotid artery/carotid artery stenosis/carotid
stenosis/endarterectomy/ischemic/ischemic
stroke/morbidity/mortality/prevention/primary prevention/randomized/relative
risk/risk/stroke/symptomatic carotid artery
stenosis/therapy/thromboendarterectomy/treatment/vascular
Schweiger, H. (2000), Natural history of carotid artery stenosis and indication for
surgery. Zentralblatt fur Chirurgie, 125 (3), 221-227.
Abstract: Atherosclerotic stenoses of the internal carotid artery are often the underlying
cause for ischemic stroke. Several studies show a strong correlation between the
grade of stenosis and stroke risk. When cerebral symptoms occur in patients with
a carotid artery stenosis of 60% or more the risk of stroke within the following
12 months is over 10%. Large randomised studies show that patients with a high
grade carotid artery stenosis benefit clearly from carotid endarterectomy.
Surgical treatment reduces stroke risk by more than 70% in these patients.
Symptomatic patients with stenoses less than 40% do not benefit by
endarterectomy even when surgical complication rate is low. The benefit of
carotid endarterectomy is proven for asymptomatic stenoses, too. Zn
asymptomatic patients, however, an operative procedure is justified only when
surgical complication rate is 3% or less
Keywords: asymptomatic/ASYMPTOMATIC PATIENTS/BRUITS/carotid/carotid
artery/carotid artery stenosis/carotid
endarterectomy/cerebral/DISEASE/ENDARTERECTOMY/Germany/history/ind
ication for surgery/internal carotid artery/ischemic/ischemic stroke/natural
course/OCCLUSION/PREVENTION/risk/stenosis/STROKE/surgery/treatment/
TRIAL
Reber, P.U., Ghisletta, N., Hakki, H., Zwahlen, I., Baumgartner, I. and Kniemeyer, H.W.
(2001), Assessment of intraoperative duplexsonography during carotid
endarterectomy. Zentralblatt fur Chirurgie, 126 (12), 969-974.
Abstract: Introduction: Carotid endarterectomy (CEA) for prevention of strokes
mandates a high amount of experience and a meticulous surgical technique.
Intraoperative morphologic as well as hemodynamic monitoring of the
endarterectomized arteries is rarely performed. The purpose of this study was to
determine the value of intraoperative colour-coded-duplex-sonography to
recognize eventual intraoperative technical problems that might result in serious
cerebral damage. Methods: Prospective analysis of the medical data of all
patients who underwent CEA for treatment of high-grade carotid stenosis
between 1996 and 1999. Adequacy of the repair was assessed intraoperatively by
duplexsonography. Results: Of 142 consecutive patients with a median age of 68
(43-84) years, 104 (73%) were men and 38 (27%) were women. 9 patients (6%)
had bilateral CEAs. intraoperative duplexsonography revealed abnormalities
during 11 (7%) of 151 CEAs. 4(3%) were considered major and underwent
immediate revision. There was one (0.7%) temporary neurologic deficit
(hyperperfusion syndrome) and 2 (1.3%) cases of fatal intracerebral hemorrhage.
6 (4%) postoperative surgical complications occurred, i.e. 3 cases of major
wound hematoma (with revision) and 3 cases of temporary cranial nerve palsy.
Median length of follow-up was 11 (3-35) months. No late neurologic event
occurred during follow-up. 5 (3%) patients developed asymptomatic restenosis.
Discussion: Routine intraoperative duplexsonography is a valuable and reliable
diagnostic tool to detect correctable technical problems during CEA that
subsequently may lead to neurological deficits, fatal stroke or a high incidence of
restenosis
Keywords: age/ANGIOSCOPY/arteries/ARTERY/asymptomatic/carotid/carotid
artery/carotid endarterectomy/carotid
stenosis/cerebral/complications/diagnostic/duplex
sonography/endarterectomy/FOLLOW-UP/hematoma/hemorrhage/incidence/intr
acerebral/intracerebral
hemorrhage/medical/men/monitoring/postoperative/prevention/restenosis/results/
STENOSIS/STROKE/Switzerland/TECHNICAL DEFECTS/treatment/women
Stolyarova, L.G., Kadykov, A.S., Chernikova, L.A., Razinkina, T.P. and Shvedkov, V.V.
(1989), Prevention and Treatment of Contractures in Post-Stroke Arthropathies.
Zhurnal Nevropatologii I Psikhiatrii Imeni S S Korsakova, 89 (9), 63-65
Vereschagin, N.V. and Varakin, Y.Y. (1996), Prophylaxis of acute cerebrovascular
disorders: Theory and reality. Zhurnal Nevropatologii I Psikhiatrii Imeni S S
Korsakova, 96 (5), 5-9.
Abstract: It would be valid to conduct prophylaxis of acute cerebrovascular disturbances
(ACVD) in the context of state Integral program of prophylaxis of the main
noninfectious diseases. Its basic principles are: control of risk factors, Integral
approach and priority of populational strategy. The main medical directions of
ACDV prophylaxis are: control of arterial hypertension and prevention of
cardioembolic insult in patients with heart rhythm disorders. It is also possible to
prevent repeated ACDV in patients with transitory Ischemic attacks and minor
Insults. The best result is prognosed in combination of the state policy of
providing the healthy mode of life of population and medical prophylaxis of
ACVD in high risk groups
Keywords: acute/arterial hypertension/cerebrovascular/cerebrovascular
disorders/control/CORONARY
HEART-DISEASE/diseases/heart/hypertension/MORTALITY/prevention/proph
ylaxis/risk/risk factors/STROKE
Pokrovsky, A.V., Dzhibladze, D.N., Orekhov, P.Y., Lagoda, O.V. and Shekhonin, B.V.
(1998), Clinical course of restenoses after carotid endarterectomy. Zhurnal
Nevropatologii I Psikhiatrii Imeni S S Korsakova, 98 (1), 10-15.
Abstract: Angiologic and neurologic examinations, ultrasonic dopplerography were
performed in 89 patients after operation of carotid endarterectomy. Period of
observation was 6-182 months after operation (61 months on the average).
Positive clinical effect (absence of disorders of cerebral circulation -DCC) was
achieved in 91% of cases. The frequency of both repeated transitory ischemic
attacks and the strokes was 9%, the best frequency being in patients with initially
asymptomatic course. It was found that the degree of restenosis directly
correlated with frequency of neurologic symptom development: there were no
repeated DCC in normal state of the operated artery. Meanwhile DCC frequency
was less than 4% In cases with the degree of restenoses less than 60% and was
equal to 15,8% in more than 60% restenoses. DCC were more frequently found
in occlusion of internal carotid artery. Rather favourable course of restenoses of
carotid artery was also conditioned by low content of the plaques dangerous in
terms of embolism. Progression of atherosclerotic damages in other parts of
extracranial arteries promoted clinical manifestation of cerebral ischemia.
Moreover, negative neurologic dynamics developed in 7% Of the patients with
restenoses less than 60%, and in 13,8% of cases with restenoses more than 60%.
The conclusion was made about efficiency of carotid endarterectomy in patients
with atherosclerotic damages of carotid arteries. For prevention of repeated DCC
it is recommended both to perform conservative therapy after the operation and
to examine dynamically the patients using ultrasonic dopplerography beginning 6
months after the operation
Keywords: ARTERY STENOSIS/carotid/carotid arteries/carotid
endarterectomy/cerebral/cerebral
ischemia/development/DISEASE/embolism/endarterectomy/ischemia/MANAGE
MENT/META-ANALYSIS/OCCLUSION/POLYTETRAFLUOROETHYLENE
PATCH/prevention/RECURRENT STENOSIS/STROKE/TERM
FOLLOW-UP/therapy/ultrasonic/VEIN PATCH ANGIOPLASTY
Stakhovskaya, L.V., Kvasova, O.V., Pryanikova, N.A., Efremova, N.M. and Skvortsova,
V.I. (2000), The application of dipyridamole (curantyl) for the secondary
prevention of ischemic stroke. Zhurnal Nevropatologii I Psikhiatrii Imeni S S
Korsakova, 100 (4), 28-31
Keywords: dipyridamole/ischemic/ischemic stroke/prevention/secondary
prevention/stroke
Stakhovskaya, L.V., Pryanikova, N.A., Kvasova, O.V., Guseva, O.I., Buvaltsev, V.I. and
Skvortsova, V.I. (2001), Comparative analysis of treatment with either
dipyridamol or combination dipyridamol plus aspirin in patients selected for
secondary stroke prevention. Zhurnal Nevropatologii I Psikhiatrii Imeni S S
Korsakova, 66-71.
Abstract: 57 patients were treated with dipyridamol (225 mg/day) alone and in
combination with aspirin (150 mg/ and 50 mg/day respectively) since the 15th
day of stroke onset. 16 patients were enrolled as controls. Development of
vascular events and results of spontaneous and ADP induced aggregation rates
were assessed. We found that such therapy applied for six months could prevent
the development of myocardial infarction, ischemic stroke and other vascular
events whereas in 19% of patients who weren't treated recurrent ischemic stroke
occurred. It is shown that both monotherapy with dipyridamol and combination
therapy with dipyridamol+aspirin has stabilized aggregation within normal
parameters by the middle of the treatment course irrespectively of platelet
functional activity registered before treatment start
Keywords: ADP/aggregation/aspirin/combination/combination
therapy/development/infarction/ischemic/ischemic stroke/myocardial/myocardial
infarction/PLATELET-AGGREGATION/prevention/secondary/secondary stroke
prevention/stroke/stroke prevention/therapy/treatment/vascular
Olbinskaya, L.I. (2001), Therapy of arterial hypertension and stroke prevention. Zhurnal
Nevropatologii I Psikhiatrii Imeni S S Korsakova, 45-47
Keywords: arterial
hypertension/BLOOD-PRESSURE/DISEASE/hypertension/prevention/RISK/str
oke/stroke prevention
Harakoz, O.S., Kanorsky, S.G., Schelchkova, I.S. and Kizhvatova, N.V. (2001), First
results of stroke register in Krasnodar. Zhurnal Nevropatologii I Psikhiatrii
Imeni S S Korsakova, 26-30.
Abstract: The stroke register started in Krasnodar revealed that the age- standardized
stroke morbidity in male patients was 232.3 in 1998, among female - 146.6 per
100 000 (p<0.01), and mortality - 90.4 and 69.5 for 100 000, respectively
(p<0.05). At the age before 50 mortality among males is 1.8 times higher, aged
50-69 - in 1.4 times higher than in females of the same ages, but after 70 years
old, vice versa, it is 1.6 times lower. 39.7% patients were admitted to the hospital,
62.1% of them had mild and moderate stroke. 74.7% patients with severe stroke
were treated. In these cases mortality was 61.4% while that in in- patient, 17.8%
(p<0.01). Hypertension appeared to be the main risk factor of stroke (65.7%).
Despite the patient's well awareness of this disease (81.8%) 65.2% patients
refused to take hypotensive therapy and only 16.9% afflicted with stroke later
were regularly treated in appropriate way
Keywords: age/aged/awareness/CARDIOVASCULAR-DISEASE/CEREBRAL
INFARCTION/disease/HEART-DISEASE/hospital/HYPERTENSION/hypotens
ive
therapy/MEN/morbidity/MORTALITY/MYOCARDIAL-INFARCTION/PREV
ENTION/risk/risk factor/RISK-FACTORS/stroke/therapy/WOMEN
Preobrazhensky, D.V., Sidorenko, B.A., Batyraliev, T.A., Nosenko, N.S. and Pataraya,
S.A. (2002), Primary prevention of cerebral stroke. Part I. Zhurnal
Nevropatologii I Psikhiatrii Imeni S S Korsakova, 19-23.
Abstract: Prevalence of stroke in Russia is compared to that in North American and
West European developed countries. The lifestyle modification is highlighted as
beneficial both for primary and secondary stroke prevention. The randomized
controlled trials concerned with antihypertensive therapy influence on the risk of
stroke were reviewed. Diuretics, beta-blockers, ACE inhibitors and calcium
antagonists are concluded to be equipotent for stroke prevention in patients with
arterial hypertension
Keywords: ACE inhibitors/ACE inhibitors and calcium
antagonists/ANTIHYPERTENSIVE THERAPIES/antihypertensive
therapy/antihypertensive treatment/arterial/arterial hypertension/beta-
blockers/beta-blockers/BLOOD-PRESSURE/calcium/calcium
antagonists/calcium-antagonists/cerebral/diuretics/hypertension/lifestyle/lifestyle
modification/lifestyle modifications/METAANALYSIS/North
American/prevention/primary/primary prevention/randomized/RANDOMIZED
CONTROLLED TRIALS/RISK/risk factors/secondary/secondary stroke
prevention/stroke/stroke prevention/therapy/trials
Fedin, A.I., Efimov, V.S., Kashezheva, A.Z. and Kromm, M.A. (2002),
Hyperhomocysteinemia as a risk factor for stroke. Zhurnal Nevropatologii I
Psikhiatrii Imeni S S Korsakova, 24-28.
Abstract: The importance of stroke investigation stipulates by higher prevalence and
morbidity of the disease as well as severe disablement of patients.
Atherosclerotic plaques and major arteries stenosis, arterial hypertension, arterial
aneurisms, etc., are reported to be the most known etiological factors for stroke.
Arterial hypertension, smoking, diabetes mellitus, older age, physical activity
reduction, obesity, hyperlipoproteinemia with distinct increase of total blood
cholesterol and low and very low density lipoproteins are considered as most
known risk factors for stroke irrespective of its subtypes. For the last years, an
association between intracerebral arteries thrombosis development and abnormal
metabolism of amino acid methionine and its metabolite homocysteine has been
studied intensively. The article addresses the biochemical aspects of this
phenomenon and main etiological causes both of genetic and iatrogenic origin.
Much attention is drawn to prevention and treatment of hyperhomocysteinemia.
The relationship between a chain of atherosclerotic processes development and
oxidative stress activation in relation to cell membrane lipids, extracerebral
hyperhomocysteinemia symptoms is shown. Modem mechanisms of
hemocoagulation system activation in hyperhomocysteinemia are regarded
Keywords: activation/age/arterial/arterial
hypertension/arteries/atherosclerosis/causes/cholesterol/development/diabetes/di
abetes mellitus/disease/genetic/homocysteine/HOMOCYSTEINE
METABOLISM/hyperhomocysteinemia/hypertension/intracerebral/lipids/lipopr
oteins/main head artery
stenosis/mechanisms/metabolism/methionine/morbidity/obesity/oxidative
stress/physical activity/PLASMA
HOMOCYSTEINE/prevalence/prevention/risk/risk factor/risk factors/risk
factors for stroke/smoking/stenosis/stress/stroke/stroke
prevention/symptoms/thrombosis/treatment/VASCULAR-DISEASE
Kharakoz, O.S., Chirva, N.N., Kanorsky, S.G., Ovcharov, V.K. and Skvortsova, V.I.
(2002), Secondary stroke prevention: the advantages of care in neurological
center for specialized outpatient treatment. Zhurnal Nevropatologii I Psikhiatrii
Imeni S S Korsakova, 59-61.
Abstract: In neurological center for specialized course outpatient treatment, a higher
level of medical care, comparing to general clinics, is provided for post- stroke
patients. The continuous antiaggregants intake and modern antihypertensive
therapy allowed to reduce significantly a frequency of secondary stroke in
comparison to standard care for such patients in general outpatient clinics (4.6%
versus 24% during a year; p<0.05). A combined treatment in neurological center
promoted a decrease of neurological deficit in 92.6% of all the cases. Positive
experience of the secondary stroke prevention unit gives grounds for its
introduction in clinical practice
Keywords: antihypertensive therapy/center of specialized outpatient treatment/clinical
practice/medical/prevention/secondary/secondary stroke prevention/stroke/stroke
patients/stroke prevention/THERAPY/TIA/treatment
Vizir, V.A. and Berezin, A.E. (2002), The influence of lacidipin on brain hemodynamics
in patients with arterial hypertension due to carotid artery stenosis. Zhurnal
Nevropatologii I Psikhiatrii Imeni S S Korsakova, 45-51.
Abstract: Eighteen pairs of patients, 18 men and 18 women, aged 57 years, with arterial
hypertension (AH) of 15.7 year duration, were ascertained. Each patient with AH
and carotid artery stenosis has been matched with the patient without carotid
artery stenosis for gender, age, illness duration, degree of target organs damage
and All severity. All the patients were treated with lacidipin in average dosage 6
mg per day for 2-13 weeks. The cerebral blood flow state was evaluated using
duplex insonation with color pulse wave and energetic Doppler. The results
obtained revealed that the lacidipin dosage used in the study promoted an
adequate control over arterial pressure in the AH patients with- or without
carotid artery stenosis. The drug application reduces an exuberant perfusion in
stenosis side of the middle cerebral artery. Lacidipin usage in patients with AH
due to carotid artery stenosis may be taken into account in cerebral stroke
prevention
Keywords: age/aged/arterial/arterial hypertension/brain/brain
hemodynamics/carotid/carotid artery/carotid artery stenosis/cerebral/cerebral
artery/cerebral blood
flow/control/Doppler/duplex/gender/hemodynamics/hypertension/ISCHEMIC
STROKE/lacidipin/men/middle cerebral artery/MILD
HYPERTENSION/prevention/RISK/severity/stenosis/stroke/stroke
prevention/treatment/TRIAL/women
Gorbacheva, F.E., Buvaltsev, V.I., Natyazhkina, G.M., Matveeva, L.A., Kvasov, V.T.,
Telysheva, J.B. and Nosko, V.N. (2002), Effect of nebivolol on systemic and
cerebrovascular hemodynamics in patients with cerebrovascular lesions and
arterial hypertension. Zhurnal Nevropatologii I Psikhiatrii Imeni S S Korsakova,
52-56.
Abstract: The effect of nebivolol on cerebrovascular blood flow state was studied in 25
patients with discirculatory encephalopathy (DEP) due to arterial hypertension
and cerebrovascular artherosclerosis after transient ischemic attacks (TIAs) and
with residual stroke symptoms in the subcompensation stage. Major
cerebrovascular arteries blood flow was studied using triplex ultrasonic scanning
and regional blood flow - with radionuclide Tc-99m scintigraphy.
Atherosclerotic stenosis (30- 70% of extra- and intra-cerebral arteries up to
occlusion) has been detected in the majority of the patients. Monotherapy with
nebivolol in dosage 2.5-5 mg per day for 8 weeks had hypotensive effect without
severe bradycardia and cerebrovascular hemodynamic deterioration. Significant
cerebrovascular blood flow improvement has been found in the patients with
TIAs. Therefore, nebivolol therapy proved to have a hypotensive effect and
improve cerebrovascular hemodynamics
Keywords: arterial/arterial
hypertension/arteries/artherosclerosis/cerebrovascular/cerebrovascular blood
flow/hemodynamics/hypertension/intracerebral/ischemic/nebivolol/residual/seco
ndary stroke prevention/stenosis/stroke/symptoms/therapy/transient/transient
ischemic attacks/treatment/ultrasonic