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Risk of cerebrovascular accident after a first diagnosis of atrial fibrillation
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Family Medicine and Clinical Epidemiology.
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2007 (English)In: Clinical Cardiology, ISSN 0160-9289, E-ISSN 1932-8737, Vol. 30, no 12, 624-628 p.Article in journal (Refereed) Published
Abstract [en]


Atrial fibrillation is the most common cardiac arrhythmia and a major risk factor for cerebrovascular accident, including ischemic stroke and transient ischemic attack.


Ischemic cerebrovascular accident is associated with increasing age and cardiovascular and cerebrovascular disease in primary care patients with atrial fibrillation.


Using the U.K. General Practice Research Database, we identified patients with chronic atrial fibrillation who were alive 1 month after initial diagnosis (n = 906). Potential cases of cerebrovascular accident were identified and confirmed by the primary care physician. The incidence of cerebrovascular accident was calculated. A nested case-control analysis was performed to identify factors associated with cerebrovascular accident among patients with chronic atrial fibrillation.


During a mean follow-up period of 1.8 years (range: 0-3.9 years), 60 patients with atrial fibrillation were diagnosed with a new cerebrovascular accident (22 cases with transient ischemic attack and 38 with ischemic stroke). The incidence of new cerebrovascular accident was 3.6 per 100 patient-years (95% confidence interval [CI]: 2.8-4.6). Increased age (odds ratios [OR] compared with age 40-69 years: 3.5 [95% CI: 1.2-10.5] for age 70-79 years and 4.9 [95% CI: 1.6-15.0] for age > or = 80 years), prior cerebrovascular event (OR: 3.4; 95% CI: 1.9-6.1) and diabetes (OR: 2.2; 95% CI: 1.0-4.9) were identified as risk factors for a new cerebrovascular accident.


Among patients with atrial fibrillation, risk factors for a new ischemic cerebrovascular accident include previous ischemic stroke or transient ischemic attack, comorbid diabetes, and increasing age.

Place, publisher, year, edition, pages
2007. Vol. 30, no 12, 624-628 p.
Keyword [en]
Atrial fibrillation, ischemic stroke, transient ischemic attack, cerebrovascular accident, primary health care, epidemiology
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-105641DOI: 10.1002/clc.20178ISI: 000251704000006PubMedID: 18069679OAI: oai:DiVA.org:uu-105641DiVA: diva2:221807
Available from: 2009-06-05 Created: 2009-06-05 Last updated: 2011-08-15Bibliographically approved

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