SECTION 1: CARDIOLOGY & CARDIOVASCULAR SYSTEM (Questions 1-44) Question 1: A 58-year-old man presents with crushing chest pain radiating to the jaw. ECG shows ST elevations in leads V1–V4. Which artery is most likely occluded? A. Right coronary artery B. Left circumflex artery C. Left anterior descending artery D. Posterior descending artery Answer: C. Left anterior descending artery Rationale: ST elevations in V1–V4 indicate an anterior wall myocardial infarction. The left anterior descending (LAD) artery supplies the anterior wall of the left ventricle and the interventricular septum, making it the most common culprit in anterior MI . Question 2: A patient with hypertension is started on an ACE inhibitor. Which change is expected with this medication? A. Increased aldosterone secretion B. Decreased bradykinin levels C. Increased angiotensin II levels
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