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ModerateCardiologyAtrial Fibrillationus-abimus-abfmus-usmle-step-2us-usmle-step-3

A 72-year-old with atrial fibrillation (CHA₂DS₂-VASc 4) and normal renal function presents for stroke prevention. He has no mechanical valve or moderate-to-severe mitral stenosis. Which is the preferred long-term anticoagulant?

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