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ModerateCardiologyHeart Failure (HFrEF)us-abimus-usmle-step-2us-usmle-step-3

A 66-year-old with HFrEF (LVEF 28%) on lisinopril and furosemide remains symptomatic. No contraindications. Which addition provides mortality benefit and is part of guideline-directed quadruple therapy?

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