us-abim MCQ (SBA): Atrial Fibrillation

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

A 72-year-old with nonvalvular atrial fibrillation has hypertension, type 2 diabetes, and symptomatic heart failure. eGFR is 55 mL/min/1.73 m². CHA₂DS₂-VASc = 4. What is the best antithrombotic strategy?

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