Question 1
Chest pressure and diaphoresis persist in a 62-year-old man whose first high-sensitivity troponin is below the assay's upper reference limit. His ECG shows horizontal ST depression confined to V1-V3, tall R waves in those leads, upright T waves, and a narrow QRS complex. Which investigation would most rapidly clarify whether an acute coronary occlusion is being missed?
Show answer & explanation
Correct answer: B - Obtain an immediate ECG with posterior leads V7-V9.