Beta Blockers USMLE Step 1 Practice Question
A 61-year-old man with stable chronic heart failure and reduced ejection fraction (EF 32%) presents with dyspnea on exertion. Vital signs: BP 128/76 mmHg, HR 89 bpm, RR 18, SpO2 98% on room air. He has moderate asthma without current wheezing. The team initiates evidence-based heart failure therapy but requires an agent with relative beta-1 selectivity to minimize bronchospasm risk. He takes no current beta blockers. Which drug is most appropriate?
Answer choices
- ACarvedilol only because it is beta-2 selective
- BPhenoxybenzamine
- CMetoprololCorrect answer
- DPropranolol
- ETimolol
- FLabetalol
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