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MediumMRAHeart Failure with reduced Ejection Fraction (HFrEF)USMLEInternal Medicine Boards

A 58-year-old with HFrEF (EF 30%) stable on carvedilol and enalapril presents for optimization. No hyperkalemia; eGFR 70 mL/min/1.73 m². Which additional therapy most reduces HF hospitalization and CV mortality regardless of diabetes?

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