Letter by Yang et al Regarding Article, “Use of Oral Anticoagulants for Stroke Prevention in Patients With Atrial Fibrillation Who Have a History of Intracranial Hemorrhage”
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To the Editor:
The research of Chao et al1 based on the National Health Insurance Research Database shows that warfarin use may be beneficial for patients with atrial fibrillation (AF) with prior intracranial hemorrhage (ICH) who have a CHA2DS2-VASc score ≥6. It provides excellent evidence to guide the use of oral anticoagulants (OACs) in patients with AF with prior ICH. However, an unanswered question is how to decrease the risk of ischemic stroke in the AF patients with prior ICH who have a CHA2DS2-VASc score between 2 and 5.