1
A 64-year-old man with diabetes presents with exertional chest pain relieved by rest. ECG at rest is normal. Stress test shows 2 mm horizontal ST depression in leads V4–V6 at moderate workload. What is the underlying pathophysiology?
A
Acute plaque rupture with thrombosis
B
Fixed atherosclerotic coronary artery stenosis
D
Microvascular embolization