Cited by 91Atrial Fibrillation Management and OutcomesVenous Thromboembolism Diagnosis and ManagementAcute Ischemic Stroke Management

Major bleeding in patients with atrial fibrillation receiving vitamin K antagonists: a systematic review of randomized and observational studies

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Roskell, Neil S., Samuel, Miny, Noack, Herbert, Monz, Brigitta U.·2013·EP Europace

Abstract

AIMS: Clinical trials have shown that anticoagulation with vitamin K antagonists (VKAs), e.g. warfarin, decreases the risk of stroke in patients with atrial fibrillation (AF); however, increased bleeding risk is one of the safety concerns. The primary objective was to conduct a systematic review of the published literature, assessing the risk of major bleeding and mortality in patients with AF treated with VKAs. METHODS AND RESULTS: Online searches of MEDLINE, EMBASE, BIOSIS, and the Cochrane Library were performed to a pre-specified protocol from 1960 to March 2012 for randomized controlled trials (RCTs) and from January 1990 to March 2012 for observational studies. A total of 47 studies (16 RCTs and 31 observational studies) were included. Cumulative follow-up was 61,563 patient-years for RCTs and 484 241 patient-years for observational studies. The overall median incidence of major bleeding was 2.1 per 100 patient-years (range, 0.9-3.4 per 100 patient-years) for RCTs and 2.0 per 100 patient-years (range, 0.2-7.6 per 100 patient-years) for observational studies. With study year as a proxy for changing management patterns, some evidence of bleeding rates and/or their reporting increasing over time was noted. Mortality rates from observational studies were inadequately reported to allow comparison with those from RCT data. CONCLUSION: The median rate of major bleeding in observational studies and RCTs is similar. The larger heterogeneity in bleeding rates observed in a real-life setting could reflect a high variability in standard of care of patients on VKAs and/or methodological differences between observational studies and/or variability in data sources.

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  • In a meta-analysis of 47 studies, the overall incidence of major bleeding with VKAs was 2.1 (range 0.9-3.4) per 100 patient-years in controlled trials and 2.0 (range 0.2-7.6) per 100 patient-years for observational data sets.

    “In a meta-analysis of 47 studies, the overall incidence of major bleeding with VKAs was 2.1 (range 0.9-3.4) per 100 patient-years in controlled trials and 2.0 (range 0.2-7.6)per 100 patient-years for observational data sets.488”

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Authors
Roskell, N. S., Samuel, M., Noack, H., & Monz, B. U.
Affiliations
  • RTI Health Solutions (US)
  • Boehringer Ingelheim (Germany) (DE)
Corresponding author
Roskell, Neil S.
Venue
EP Europace
Published
2013-06
Volume
15
Issue
6
Pages
787-797
ISSN
  • 1099-5129 (ISSN-L)
  • 1532-2092
OpenAlex
W1976575956
Cited by
91
References
65
Citations by year
2026: 1 · 2025: 4 · 2024: 6 · 2023: 5 · 2022: 8 · 2021: 3 · 2020: 3 · 2019: 8 · 2018: 11 · 2017: 12 · 2016: 11 · 2015: 9 · 2014: 6 · 2013: 4
FWCI
1.70
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • EP Europace (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Internal Medicine › Venous Thromboembolism Diagnosis and Management
  • Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
Keywords
atrial fibrillation, vitamin K antagonists, warfarin, major bleeding, bleeding risk, mortality, anticoagulant safety, stroke prevention, observational studies, randomized controlled trials
MeSH terms
Anticoagulants, Atrial Fibrillation, Hemorrhage, Humans, Thromboembolism, Vitamin K, Comorbidity, Incidence, Survival Analysis, Randomized Controlled Trials as Topic, Risk Assessment, Evidence-Based Medicine, Observational Studies as Topic

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