Cited by 207Atrial Fibrillation Management and OutcomesAcute Ischemic Stroke ManagementVenous Thromboembolism Diagnosis and Management

Benefit of anticoagulation unlikely in patients with atrial fibrillation and a CHA2DS2-VASc score of 1

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Friberg, Leif, Skeppholm, Mika, Terént, Andreas·2015·Journal of the American College of Cardiology

Abstract

Background Patients with atrial fibrillation (AF) and ≥1 point on the stroke risk scheme CHA2DS2-VASc (congestive heart failure, hypertension, age ≥75 years, diabetes mellitus, stroke/transient ischemic attack, vascular disease, age 65-74 years, sex category) are considered at increased risk for future stroke, but the risk associated with a score of 1 differs markedly between studies.Objectives The goal of this study was to assess AF-related stroke risk among patients with a score of 1 on the CHA2DS2-VASc.Methods We conducted this retrospective study of 140,420 patients with AF in Swedish nationwide health registries on the basis of varying definitions of "stroke events."Results Using a wide "stroke" diagnosis (including hospital discharge diagnoses of ischemic stroke as well as unspecified stroke, transient ischemic attack, and pulmonary embolism) yielded a 44% higher annual risk than if only ischemic strokes were counted. Including stroke events in conjunction with the index hospitalization for AF doubled the long-term risk beyond the first 4 weeks. For women, annual stroke rates varied between 0.1% and 0.2% depending on which event definition was used; for men, the corresponding rates were 0.5% and 0.7%.Conclusions The risk of ischemic stroke in patients with AF and a CHA2DS2-VASc score of 1 seems to be lower than previously reported.

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Crossref · 10.1016/j.jacc.2014.10.052

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  • Rates of stroke and thromboembolism vary considerably in patients with CHA2DS2-VASc scores of 1 or 2 due to differences in outcomes, populations, and anticoagulation status.

    “The rates of stroke and thromboembolism vary considerably in patients with CHA 2 DS 2 -VASc scores of 1 or 2 due to differences in outcomes, populations, and anticoagulation status (Web Addenda Table 1).371,376,377,1041”

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  1. Lip GY, Frison L, Halperin JL, Lane DA. Identi- fying patients at high risk for stroke despite anti- coagulation: a comparison of contemporary stroke risk stratification schemes in an anticoagulated atrial fibrillation cohort. Stroke 2010;41:2731-8.

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Authors
Friberg, L., Skeppholm, M., & Terént, A.
Affiliations
  • Danderyds sjukhus (SE)
  • Uppsala University Hospital (SE)
Corresponding author
Friberg, Leif
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
2015-01
Volume
65
Issue
3
Pages
225-232
ISSN
0735-1097 (ISSN-L)
OpenAlex
W2101501864
Cited by
207
References
32
Citations by year
2026: 4 · 2025: 9 · 2024: 7 · 2023: 9 · 2022: 10 · 2021: 11 · 2020: 22 · 2019: 17 · 2018: 18 · 2017: 29 · 2016: 43 · 2015: 28
FWCI
28.60
Type
journal article
Language
en
Open access
Locations
  • Journal of the American College of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Bristol-Myers Squibb
  • AstraZeneca
  • Sanofi
  • Stockholms Läns Landsting
  • Svenska Läkaresällskapet
  • St. Jude Medical
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
  • Health Sciences › Medicine › Internal Medicine › Venous Thromboembolism Diagnosis and Management
Keywords
atrial fibrillation, CHA2DS2-VASc score, stroke risk, ischemic stroke, anticoagulation, sex differences, long-term stroke risk
MeSH terms
Aged, Anticoagulants, Atrial Fibrillation, Brain Ischemia, Female, Humans, Male, Registries, Retrospective Studies, Sweden, Warfarin, Risk Assessment, Stroke

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