A 68-year-woman with hypertension and dyslipidemia presents with 30 minutes of retrosternal chest pain radiating to her neck. She is diaphoretic and in moderate distress. The ECG shows ST-segment elevation in the inferior leads. Which of the following mechanisms is the most likely cause of her condition?
Correct Answer: coronary plaque rupture
Description: Acute rupture of an atherosclerotic plaque is now recognized as the most common cause of ST-elevation MI. Pericarditis has diffuse ST elevation in multiple leads and aortic stenosis does cause angina but not ST elevation.
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