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Changes in Renal Function in Patients With Atrial Fibrillation An Analysis From the RE-LY Trial
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2015 (English)In: Journal of the American College of Cardiology, ISSN 0735-1097, E-ISSN 1558-3597, Vol. 65, no 23, 2481-2493 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND Vitamin K-dependent factors protect against vascular and renovascular calcification, and vitamin K antagonists may be associated with a decreased glomerular filtration rate (GFR). OBJECTIVES This study analyzed changes in GFR during long-term treatment with warfarin or dabigatran etexilate (DE) in patients enrolled in the RE-LY (Randomized Evaluation of Long Term Anticoagulation Therapy) trial. METHODS Of the 18,113 patients in the RE-LY study randomized to receive DE (110 mg or 150 mg twice daily) or warfarin, 16,490 patients with atrial fibrillation had creatinine values measured at baseline and at least 1 follow-up visit. Changes in GFR for up to 30 months were evaluated. RESULTS GFR declined in all treatment groups. After an average of 30 months, the mean +/- SE decline in GFR was significantly greater with warfarin (-3.68 +/- 0.24 ml/min) compared with DE 110 mg (-2.57 +/- 0.24 ml/min; p = 0.0009 vs. warfarin) and DE 150 mg (-2.46 +/- 0.23 ml/min; p = 0.0002 vs. warfarin). A decrease in GFR >25% was less likely with DE 110 mg (hazard ratio: 0.81 [95% confidence interval: 0.69 to 0.96]; p = 0.017) or DE 150 mg (hazard ratio: 0.79 [95% confidence interval: 0.68 to 0.93]; p = 0.0056) than with warfarin in the observation period >18 months. Patients with poor international normalized ratio control (i.e., time in therapeutic range <65%) exhibited a faster decline in GFR. A more pronounced decline in GFR was associated with previous warfarin use and with the presence of diabetes. CONCLUSIONS Patients with atrial fibrillation receiving oral anticoagulation exhibited a decline in renal function that was greater in those taking warfarin versus DE, and it was amplified by diabetes and previous vitamin K antagonist use.

Place, publisher, year, edition, pages
2015. Vol. 65, no 23, 2481-2493 p.
Keyword [en]
anticoagulation, atrial fibrillation, renal function, thrombin inhibition, vitamin K antagonist
National Category
Cardiac and Cardiovascular Systems
Identifiers
URN: urn:nbn:se:uu:diva-256988DOI: 10.1016/j.jacc.2015.03.577ISI: 000356002800003PubMedID: 26065986OAI: oai:DiVA.org:uu-256988DiVA: diva2:836035
Available from: 2015-06-30 Created: 2015-06-29 Last updated: 2017-12-04Bibliographically approved

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Hijazi, ZiadWallentin, Lars

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