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Myocardial Ischemic Events in Patients With Atrial Fibrillation Treated With Dabigatran or Warfarin in the RE-LY (Randomized Evaluation of Long-Term Anticoagulation Therapy) Trial
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. (Kardiologi)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. (Kardiologi)
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2012 (English)In: Circulation, ISSN 0009-7322, E-ISSN 1524-4539, Vol. 125, no 5, 669-676 p.Article in journal (Refereed) Published
Abstract [en]

Background: There is a modest risk of myocardial infarction (MI) and myocardial ischemic events in patients with atrial fibrillation.

Methods and Results: Data from the RE-LY study (Randomized Evaluation of Long-Term Anticoagulation Therapy) were used to report rates of MI, unstable angina, cardiac arrest, and cardiac death and the prespecified net clinical benefit and treatment effects of dabigatran versus warfarin. MI occurred at annual rates of 0.82% and 0.81% with dabigatran 110 or 150 mg BID compared with 0.64% with warfarin (hazard ratio [HR] 1.29, 95% confidence interval [CI] 0.96-1.75, P=0.09 for dabigatran 110 mg; HR 1.27, 95% CI 0.94-1.71, P=0.12 for dabigatran 150 mg). Annual rates of a composite of MI, unstable angina, cardiac arrest, and cardiac death were 3.16% per year with dabigatran 110 mg, 3.33% per year with dabigatran 150 mg, and 3.41% per year with warfarin (HR versus warfarin 0.93, 95% CI 0.80-1.06, P=0.28 for dabigatran 110 mg and HR 0.98, 95% CI 0.85-1.12, P=0.77 for dabigatran 150 mg). Events prespecified as "net clinical benefit" (all strokes, systemic embolism, MI, pulmonary embolism, major bleeding, and all-cause death) occurred at a rate of 7.34% per year with dabigatran 110 mg, 7.11% per year with dabigatran 150 mg, and 7.91% per year with warfarin (HR 0.92, 95% CI 0.84 -1.01, P=0.09 for dabigatran 110 mg and HR 0.90, 95% CI 0.82-0.99, P=0.02 for dabigatran 150 mg). The relative effects of dabigatran versus warfarin on myocardial ischemic events were consistent in patients with or without a baseline history of MI or coronary artery disease.

Conclusions: There was a nonsignificant increase in MI with dabigatran compared with warfarin, but other myocardial ischemic events were not increased. Treatment effects of dabigatran were consistent in patients at higher and lower risk of myocardial ischemic events.

Place, publisher, year, edition, pages
2012. Vol. 125, no 5, 669-676 p.
Keyword [en]
atrial fibrillation, stroke, myocardial infarction, coronary artery disease, dabigatran
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-170349DOI: 10.1161/CIRCULATIONAHA.111.055970ISI: 000300391400012OAI: oai:DiVA.org:uu-170349DiVA: diva2:509108
Available from: 2012-03-12 Created: 2012-03-12 Last updated: 2017-12-07Bibliographically approved

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Oldgren, JonasWallentin, Lars

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