2 MCQs in Medicine for NEET PG
A 48-year-old man with a history of myocardial infarction 6 months ago presents with recurrent chest pain. His 12-lead ECG shows ST-segment elevation in leads II, III, and aVF, with reciprocal ST-segment depression in leads I and aVL. Additionally, there is ST-segment elevation in lead V4R. Which of the following coronary arteries is MOST likely to be occluded?
A 58-year-old man with a history of hypertension and diabetes mellitus presents to the emergency department with acute chest pain radiating to the left arm for 2 hours. His blood pressure is 165/95 mmHg and heart rate is 92 bpm. An ECG is recorded and shows ST-segment elevation of 3 mm in leads II, III, and aVF, with reciprocal ST-segment depression in leads I and aVL. Additionally, there is ST-segment elevation of 2 mm in lead V4R. What is the most likely diagnosis and which coronary artery is occluded?
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