us-abim MCQ (SBA): Heart Failure (HFrEF)

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ModerateCardiologyHeart Failure (HFrEF)us-abimus-usmle-step-3

A 72-year-old with HFrEF (EF 25%) is euvolemic on ARNI, beta-blocker, MRA, and SGLT2 inhibitor. BP 110/70, HR 62. Which addition is appropriate for resting HR ≥70 in sinus rhythm despite optimal therapy?

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