In Korean patients with atrial fibrillation and prior ischemic stroke, long-term warfarin therapy yields a low mean time in therapeutic range (49.1%), highlighting inadequate real-world anticoagulation quality in this high-risk population.
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May warrant closer INR monitoring in high-risk AF; leaves open whether NOACs yield better control in Asian stroke cohorts.
Hong et al. (2017) studied this question.
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