In heart failure with reduced EF, which drug class is added after the patient is stable and compensated?

• A. Beta-blockers
• B. ACE inhibitors
• C. ARBs
• D. Spironolactone

Answer: (A)

Beta-blockers are added after stabilization because, in chronic heart failure with reduced ejection fraction, they provide a survival benefit when the patient is euvolemic and hemodynamically stable. Starting them during acute decompensation or when the patient is unstable can worsen cardiac function. Once stable, beta-blockers such as carvedilol, metoprolol succinate, or bisoprolol are started at low doses and titrated gradually, leading to reduced mortality and fewer hospitalizations by blunting the harmful chronic sympathetic activation that drives remodeling. Foundational therapies like ACE inhibitors (or ARBs) and diuretics are typically established first; spironolactone may be added in appropriate patients, but the moment to add a mortality-improving agent after stability is with a beta-blocker.