Cardiovascular Drugs USMLE Step 1 Practice Question
A 66-year-old man develops frequent premature ventricular complexes 6 hours after acute anterior wall myocardial infarction. Vital signs show BP 118/76 mmHg, HR 102 bpm, RR 20/min, and troponin I elevation to 8.5 ng/mL. He denies chest pain currently and has normal oxygen saturation. He is not on beta-blockers or ACE inhibitors. An antiarrhythmic agent that preferentially binds inactivated sodium channels in ischemic tissue and shortens action potential duration is administered. Which drug was most likely used?
Answer choices
- AVerapamil
- BDigoxin
- CLidocaineCorrect answer
- DSotalol
- EQuinidine
- FProcainamide
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