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Background: The annual stroke rate in atrial fibrillation is around 5 per cent with increased risk in those with hypertension, diabetes, left ventricular dysfunction and other cardiovascular risk factors. This study set out to identify the patients with atrial fibrillation and modifiable risk factors for stroke. Method: Analysis of practice computer data taken from eight general practices (81 811 patients) in the south of England. 944 patients with a diagnosis of atrial fibrillation, of whom 782 (82.8 per cent) were aged 65 years and over. Results: The age standardised prevalence of diagnosed atrial fibrillation was 1.23 per cent (1.28 per cent for men and 1.18 per cent for women). It was much more prevalent in the older population, 8.28 per cent and 6.66 per cent for males and females over 65, respectively. Cardiovascular co-morbidities were more frequent with increasing age. Blood pressure (BP) was recorded in over 95 per cent of patients with atrial fibrillation though there was scope for improving control; 25 per cent of men and 31 per cent women had a BP over 150/90. Inconsistent recording of ECG and echocardiography made it hard to identify patients with left ventricular dysfunction. Forty six per cent of men and 37 per cent of women were either being prescribed Warfarin, or had contraindications to its use; of those on Warfarin 75.9 per cent have an international normalized ratio in range. Forty four per cent were treated with aspirin. People at high risk of stroke were no more likely to be treated with Warfarin or aspirin than those at moderate risk. Conclusions: The rate of use of Warfarin remains low, and there is scope for better recording and management of risk factors particularly BP. © The Author 2005, Published by Oxford University Press on behalf of Faculty of Public Health. All rights reserved.

Original publication

DOI

10.1093/pubmed/fdh201

Type

Journal article

Journal

Journal of Public Health

Publication Date

19/04/2005

Volume

27

Pages

85 - 92