Cited by 327Atrial Fibrillation Management and OutcomesAcute Ischemic Stroke ManagementHealth Promotion and Cardiovascular Prevention

Screening to identify unknown atrial fibrillation: A systematic review

Lowres, Nicole, Neubeck, Lis, Redfern, Julie, Freedman, S. Ben·2013·Thrombosis and Haemostasis

Abstract

Summary Atrial fibrillation (AF) is associated with a significantly increased stroke risk which is highly preventable with appropriate oral anticoagulant therapy (OAC). However, AF may be asymptomatic and unrecognised prior to stroke. We aimed to determine if single time-point screening for AF could identify sufficient numbers with previously undiagnosed AF, to be effective for stroke prevention. This is a systematic review of clinical trials, by searching electronic medical databases, reference lists and grey literature. Studies were included if they evaluated a general ambulant adult population, using electrocardiography or pulse palpation to identify AF. We identified 30 individual studies (n=122,571, mean age 64 years, 54% male) in nine countries. Participants were recruited either from general practitioner and outpatient clinics (12 studies) or population screening/community advertisements (18 studies). Prevalence of AF across all studies was 2.3% (95% CI, 2.2–2.4%), increasing to 4.4% (CI, 4.1–4.6%) in those ≥65 years (16 studies, n= 27,884). Overall incidence of previously unknown AF (14 studies, n=67,772) was 1.0% (CI, 0.89–1.04%), increasing to 1.4% (CI, 1.2–1.6%) in those ≥65 years (8 studies, n= 18,189) in whom screening setting did not influence incidence identified. Of those with previously unknown AF, 67% were at high risk of stroke. Screening can identify 1.4% of the population ≥65 years with previously undiagnosed AF. Many of those identified would be eligible for, and benefit from OAC to prevent stroke. Given this incidence, community AF screening strategies in at risk older age groups could potentially reduce the overall health burden associated with AF.

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Crossref · 10.1160/th13-02-0165

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Authors
Lowres, N., Neubeck, L., Redfern, J., & Freedman, S. B.
Affiliations
  • Concord Repatriation General Hospital (AU)
  • The George Institute for Global Health (AU)
Venue
Thrombosis and Haemostasis
Published
2013
Volume
110
Issue
08
Pages
213-222
ISSN
  • 0340-6245 (ISSN-L)
  • 2567-689X
OpenAlex
W1614663039
Cited by
327
References
63
Citations by year
2026: 7 · 2025: 16 · 2024: 15 · 2023: 15 · 2022: 27 · 2021: 24 · 2020: 34 · 2019: 30 · 2018: 39 · 2017: 36 · 2016: 28 · 2015: 26 · 2014: 28 · 2013: 2
FWCI
4.76
Type
journal article
Language
en
Open access
closed
Locations
Thrombosis and Haemostasis (publishedVersion)
Funders
  • National Heart Foundation Postgraduate Scholarship (PP12S6990)
  • NHMRC early career fellowship (1036763)
  • Postdoctoral Fellowship
  • NHMRC and National Heart Foundation (632933)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Health Promotion and Cardiovascular Prevention
Keywords
atrial fibrillation, asymptomatic atrial fibrillation, stroke prevention, oral anticoagulation, electrocardiography screening, pulse palpation, community-based screening, older adults, atrial fibrillation prevalence, atrial fibrillation incidence, stroke risk

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