کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5872978 | 1144462 | 2016 | 15 صفحه PDF | دانلود رایگان |
BackgroundPrior ischemic stroke or transient ischemic attack (TIA) is a high risk for thromboembolism in patients with nonvalvular atrial fibrillation (NVAF). To clarify rates of thromboembolic and hemorrhagic events, and target intensities of warfarin for secondary prevention, a subanalysis was performed using data from the J-RHYTHM Registry.MethodsOf 7937 outpatients with atrial fibrillation, 7406 with NVAF (men 70.8%, 69.8â±â10.0 years) were followed for 2 years or until an event occurred. Event rates and effect of warfarin were compared between patients with (secondary prevention) and without (primary prevention) prior stroke/TIA.ResultsPrevalence of male sex, diabetes mellitus, and mean age were higher in the secondary prevention group, showing a higher CHADS2 (congestive heart failure, hypertension, age 75 years or older, diabetes mellitus, and history of stroke or TIA) score than the primary prevention group (3.5â±â1.0 versus 1.4â±â1.0, Pâ<â.001). In the secondary prevention group, 93.4% of patients received warfarin and their time in therapeutic range was 62.8%. During follow-up, thromboembolism occurred more frequently in the secondary than in the primary prevention group (2.8% versus 1.5%, Pâ=â.004), especially in patients without warfarin. Major hemorrhage also occurred more frequently in the secondary prevention group (3.0% versus 1.7%, Pâ=â.006). Compared with patients not taking warfarin, combined rates of both events were lower at an international normalized ratio (INR) of 1.6-2.59 in patients taking warfarin in the secondary as well as in the primary prevention groups.ConclusionsBoth thromboembolism and major hemorrhage occurred more frequently in NVAF patients with prior ischemic stroke/TIA. Target INR should be 1.6-2.59 for secondary as well as primary prevention of thromboembolism in Japanese NVAF patients.
Journal: Journal of Stroke and Cerebrovascular Diseases - Volume 25, Issue 3, March 2016, Pages 585-599