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Novel Oral Anticoagulants for Primary Stroke Prevention in Hypertrophic Cardiomyopathy Patients With Atrial Fibrillation.

Abstract：

:Background and Purpose- Hypertrophic cardiomyopathy patients with atrial fibrillation are at increased risk of stroke, and anticoagulation is strongly recommended. However, limited data are available regarding the safety and effectiveness of non-vitamin K antagonist oral anticoagulants (NOACs) for primary prevention of stroke. Methods- Using the Korean Health Insurance Review and Assessment Service database, we identified 2397 patients with hypertrophic cardiomyopathy and nonvalvular atrial fibrillation on oral anticoagulation from 2013 to 2016 without history of ischemic stroke, intracranial hemorrhage (ICH), or gastrointestinal bleeding (992 on warfarin and 1405 on NOACs). Inverse probability of treatment weighting with propensity scores was used to balance covariates between treatment groups. Risk for ischemic stroke, ICH, gastrointestinal bleeding, death, and their composite outcome associated with NOAC use was assessed with warfarin use as the reference. Results- During a mean follow-up of 1.6 years, the incidence rates of ischemic stroke, ICH, gastrointestinal bleeding, death, and composite outcome were all significantly lower in the NOAC than in the warfarin group (stroke, 2.8 versus 5.0; ICH, 0.5 versus 1.3; gastrointestinal bleeding, 2.3 versus 3.0; death, 3.0 versus 5.1; composite, 7.5 versus 12.5 events per 100 person-years). NOACs were associated with significantly lower risks of ischemic stroke (hazard ratio [HR], 0.47; 95% CI, 0.32-0.68), ICH (HR, 0.31; 95% CI, 0.14-0.69), gastrointestinal bleeding (HR, 0.62; 95% CI, 0.40-0.96), death (HR, 0.45; 95% CI, 0.31-0.65), and the composite outcome (HR, 0.48; 95% CI, 0.38-0.61) than warfarin. The same trend was observed regardless of the NOAC dose and across various high-risk subgroups. In analysis of individual NOACs, all NOACs were associated with lower risks of ischemic stroke and composite outcome. Conclusions- NOACs showed superior effectiveness and safety versus warfarin in the primary prevention of stroke versus warfarin in real-world Asian hypertrophic cardiomyopathy with atrial fibrillation.

journal_name

Stroke

journal_title

Stroke

authors

Lee HJ,Kim HK,Jung JH,Han KD,Lee H,Park JB,Kim HM,Kim YJ,Ommen SR

doi

10.1161/STROKEAHA.119.026048

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

2582-2586

issue

eissn

0039-2499

issn

1524-4628

journal_volume

pub_type

杂志文章

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Novel Oral Anticoagulants for Primary Stroke Prevention in Hypertrophic Cardiomyopathy Patients With Atrial Fibrillation.