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Document Details :

Title: Prevalence of atrial fibrillation in adults participating in a large-scale voluntary screening programme in Belgium
Author(s): N. Claes , C. Van Laethem , M. Goethals , P. Goethals , G. Mairesse , B. Schwagten , D. Nuyens , W. Schrooten , J. Vijgen
Journal: Acta Cardiologica
Volume: 67    Issue: 3   Date: 2012   
Pages: 273-278
DOI: 10.2143/AC.67.3.2160714

Abstract :
Objective: Atrial fibrillation (AF) is a common arrhythmia in clinical practice. AF fulfils many of the criteria for a screening programme. No data about the prevalence of AF in non-hospitalized patients are available in Belgium. The aim of the study was to assess feasibility and effectiveness of a nationwide-organized voluntary screening programme in the general population in Belgium.
Methods: A total of 13.564 participants were screened, of whom 10,758 were older than 40 years (GSP group). Participants filled in stroke risk stratification questionnaires (CHADS2 and CHA2DS2-VASc). A one-lead electrocardiogram was performed.
Results: 228 participants had AF at the time of screening (AF group), with 125 women and 103 men (i.e. 1.9% and 2.6% of total women and men), representing a prevalence of 2.2% (95% CI 1.3% and 3.0%) of the screened population. Age of the AF group was 67 ± 12 y (range 40-87 y). Using the CHADS2-score, 58% of participants with a positive AF screening had a high risk score, and 21% had an intermediate risk score. Using the CHA2DS2-VASc-score, 72% of the participants had a high risk score, and 21% had an intermediate risk score.
Conclusion: AF was present in 2.2% of the respondents. At least 60% of AF group had an increased risk for thrombo-embolism. Although substantial methodological issues limit the exact interpretation of these results, the present study shows that a volunatry screening programme with a simple screening protocol is able to detect an important number of patients with previously undetected AF.