us-abim MCQ (SBA): HFrEF

Instant feedback + full explanation. One question, done properly.

A 59-year-old with symptomatic HFrEF (LVEF 30%) on ACE inhibitor, beta-blocker, and loop diuretic is euvolemic. Which addition confers proven mortality benefit and should be initiated now?

Educational content. Not a substitute for clinical judgement or local policy.