Atrial fibrillation in a primary care population: how close to NICE guidelines are we?

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					■ ORIGINAL PAPERS                                                                          Clinical Medicine 2009, Vol 9, No 3: 219–23




Atrial fibrillation in a primary care population:
how close to NICE guidelines are we?

Bryan Loo, Cath Parnell, Gerald Brook, Ed Southall and Ian Mahy

ABSTRACT – The National Institute for Health and Clinical                 increased access to secondary care services (for example for car-
Excellence (NICE) guidelines for the management of atrial                 dioversion) and require additional resources for monitoring
fibrillation were published in June 2006. It was anticipated              anticoagulation. A survey was therefore initiated in South
that they would potentially lead to increased demand for                  Devon, in advance of publication of the guidelines as a snapshot
echocardiography (ECHO), increased access to secondary                    of existing practice, to determine any additional resources and
care services (for example for cardioversion), and require                education required to meet the new standards.
additional resources for monitoring anticoagulation. A pri-                  South Devon has a mixed urban and rural population with a
mary care survey was therefore initiated in South Devon, in               high proportion of elderly patients. Well-established open
advance of publication of the guidelines as a snapshot of                 access ECHO services are available to local general practi-
existing practice, to determine any additional resources and              tioners (GPs), and many practices have access to cardiac moni-
education required to meet the new standards. The main                    toring independent of secondary care services. The main aim
aim was to determine what proportion of patients were                     was to determine what proportion of patients were managed
managed exclusively in primary care, how frequently                       exclusively in primary care, how frequently patients were inves-
patients were investigated by ECHO and whether anticoag-                  tigated by ECHO and whether anticoagulation was being appro-
ulation was being appropriately targeted at patients at high              priately targeted at patients at high risk of thromboembolic
risk of thromboembolic events.                                            events.

KEY WORDS: anticoagulation, atrial fibrillation, echocardiog-
                                                                          Methods
raphy, National Institute for Health and Clinical Excellence
guidelines, primary care                                                  All GP practices in South Devon were invited to take part in a
                                                                          systematic audit of a random sample of patients with AF
Introduction                                                              during 2006. Participating practices made practice registers
                                                                          and records available for access by a specialist cardiac audit
Atrial fibrillation (AF) is the most common sustained cardiac             nurse. For each participating practice four patients were
arrhythmia. Its prevalence and incidence is believed to be                selected at random from the register of patients with AF for
increasing because of population ageing and increased survival            detailed review of case notes and source documentation. The
from chronic conditions that predispose to having the condi-              audit addressed documentation of AF, investigations con-
tion.1 Several UK studies have demonstrated this trend.2,3 Atrial         ducted, associated comorbidities (particularly in relation to
fibrillation is associated with increased morbidity and mortality         cerebrovascular event (CVE) risk), thromboembolism pro-
particularly from thromboembolic stroke.4–6 Anticoagulation               phylaxis and whether patients were referred to secondary care.
has been shown to reduce this risk and is an essential compo-             Results were analysed using the paired t test (Strata v9.2 for
nent of management, irrespective of whether a strategy of ‘rate           windows) and a p value of 0.05 was considered statistically
control’ or ‘rhythm control’ is adopted.7,8                               significant.
   Despite established principles for the management of AF, it               The audit nurse extracted relevant data from primary care
has been recognised that there is considerable variation in the           case notes according to a predetermined t
				
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