us-abim MCQ (SBA): HFrEF Rate Control

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ModerateCardiologyHFrEF Rate Controlus-abimus-usmle-step-3

A 70-year-old with HFrEF and sinus rhythm remains tachycardic (HR 92) despite maximized metoprolol succinate. He has no AF. What rate-lowering add-on may reduce HF hospitalization?

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us-abim MCQ: HFrEF Rate Control — Answer & Explanation | iatroX