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ModerateCardiologyHFrEF-Ivabradine Useus-abimus-usmle-step-3

A 66-year-old with HFrEF (LVEF 28%) is euvolemic on ARNI, beta-blocker, MRA, and SGLT2i. HR 84 bpm in sinus rhythm despite maximally tolerated beta-blocker. Next step to lower hospitalization risk?

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