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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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