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ModerateCardiologyHeart Failure with Reduced Ejection Fractionus-abimus-usmle-step-2

A 51-year-old woman with HFrEF (EF 32%) on ARNI, beta-blocker, and MRA remains symptomatic. eGFR 62 mL/min/1.73 m², potassium 4.5 mEq/L, A1C 6.1%. Which addition provides morbidity/mortality benefit independent of diabetes status?

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