system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 55-year-old woman comes to the emergency room 30 minutes after the sudden onset of chest pain radiating to the left shoulder. Prior to the onset of her symptoms, she was lying in bed because of a migraine headache. Episodes of similar chest pain usually resolved after a couple of minutes. She has smoked one pack of cigarettes daily for 20 years. Her only medication is sumatriptan. An ECG shows ST-segment elevations in the anterior leads. Serum troponins are negative on two successive blood draws and ECG shows no abnormalities 30 minutes later. Administration of which of the following is most likely to prevent further episodes of chest pain in this patient?
assistant
Diltiazem
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