Cited by 204Atrial Fibrillation Management and OutcomesAcute Ischemic Stroke ManagementVenous Thromboembolism Diagnosis and Management

Warfarin in atrial fibrillation patients with moderate chronic kidney disease

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Hart, Robert G., Pearce, Lesly A., Asinger, Richard W., Herzog, Charles A.·2011·Clinical Journal of the American Society of Nephrology

Abstract

BACKGROUND AND OBJECTIVES: The efficacy of adjusted-dose warfarin for prevention of stroke in atrial fibrillation patients with stage 3 chronic kidney disease (CKD) is unknown. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Patients with stage 3 CKD participating in the Stroke Prevention in Atrial Fibrillation 3 trials were assessed to determine the effect of warfarin anticoagulation on stroke and major hemorrhage, and whether CKD status independently contributed to stroke risk. High-risk participants (n = 1044) in the randomized trial were assigned to adjusted-dose warfarin (target international normalized ratio 2 to 3) versus aspirin (325 mg) plus fixed, low-dose warfarin (subsequently shown to be equivalent to aspirin alone). Low-risk participants (n = 892) all received 325 mg aspirin daily. The primary outcome was ischemic stroke (96%) or systemic embolism (4%). RESULTS: Among the 1936 participants in the two trials, 42% (n = 805) had stage 3 CKD at entry. Considering the 1314 patients not assigned to adjusted-dose warfarin, the primary event rate was double among those with stage 3 CKD (hazard ratio 2.0, 95% CI 1.2, 3.3) versus those with a higher estimated GFR (eGFR). Among the 516 participants with stage 3 CKD included in the randomized trial, ischemic stroke/systemic embolism was reduced 76% (95% CI 42, 90; P < 0.001) by adjusted-dose warfarin compared with aspirin/low-dose warfarin; there was no difference in major hemorrhage (5 patients versus 6 patients, respectively). CONCLUSIONS: Among atrial fibrillation patients participating in the Stroke Prevention in Atrial Fibrillation III trials, stage 3 CKD was associated with higher rates of ischemic stroke/systemic embolism. Adjusted-dose warfarin markedly reduced ischemic stroke/systemic embolism in high-risk atrial fibrillation patients with stage 3 CKD.

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  1. [2]2. U.S. Renal Data System USRDS 2009 annual data report. USRDS web site, www.usrds.org/reference National Institute of Diabetes, Digestive, and Kidney Diseases, Bethesda, Maryland [Google Scholar]
  2. [14]14. National Kidney Foundation. K/DOQI Clinical practice guidelines for chronic kidney disease: Evaluation, classification and stratification. Part 4. Definition and classification of stages of chronic kidney disease. Am J Kidney Dis 39[suppl 1]: S46–S57, 2002 [PubMed] [Google Scholar]

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Authors
Hart, R. G., Pearce, L. A., Asinger, R. W., & Herzog, C. A.
Affiliations
  • The University of Texas at San Antonio Health Science Center (US)
  • Hennepin County Medical Center (US)
Corresponding author
Hart, Robert G.
Venue
Clinical Journal of the American Society of Nephrology
Published
2011-11
Volume
6
Issue
11
Pages
2599-2604
ISSN
1555-9041 (ISSN-L)
OpenAlex
W2130977972
Cited by
204
References
28
Citations by year
2026: 5 · 2025: 5 · 2024: 5 · 2023: 13 · 2022: 3 · 2021: 7 · 2020: 11 · 2019: 14 · 2018: 21 · 2017: 14 · 2016: 19 · 2015: 21 · 2014: 34 · 2013: 22 · 2012: 10
FWCI
14.47
Type
journal article
Language
en
Open access
Locations
  • Clinical Journal of the American Society of Nephrology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01ns024224-11)
  • National Institute of Neurological Disorders and Stroke (R01NS24224)
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
warfarin, atrial fibrillation, chronic kidney disease stage 3, stroke prevention, ischemic stroke, systemic embolism, major bleeding, aspirin, anticoagulation, estimated glomerular filtration rate
MeSH terms
Aged, Anticoagulants, Aspirin, Atrial Fibrillation, Blood Coagulation, Canada, Chronic Disease, Drug Therapy, Combination, Female, Hemorrhage, Humans, Kidney Diseases, Male, Platelet Aggregation Inhibitors, Risk Factors, Severity of Illness Index, Time Factors, United States, Warfarin, Chi-Square Distribution, Proportional Hazards Models, Treatment Outcome, Risk Assessment, International Normalized Ratio, Stroke, Kaplan-Meier Estimate

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