Which antiarrhythmic agent is listed as part of myocardial infarction management?

• A. Aspirin
• B. Amiodarone
• C. Nitrates
• D. Morphine

Answer: (B)

Arrhythmias that occur during a myocardial infarction need control with an antiarrhythmic that is effective in the ischemic heart. Amiodarone fits this role well because it is a broad-spectrum antiarrhythmic that works effectively in ventricular tachyarrhythmias and ventricular fibrillation, which are common life-threatening events in ACS. It has a wide safety margin in ischemic tissue and can be given intravenously to rapidly stabilize rhythm, making it a preferred choice in the acute MI setting.

Aspirin, while essential for reducing thrombosis in MI, is an antiplatelet, not an antiarrhythmic. Nitrates help relieve ischemia by dilating vessels, and morphine provides analgesia and can decrease sympathetic drive; neither acts as an antiarrhythmic. So among these options, amiodarone is the antiarrhythmic agent listed for MI management.