A 58-year-old man with hypertension presents to the emergency department with acute-onset chest pain radiating to the back. His 12-lead ECG shows horizontal ST-segment depression ≥0.5 mm in leads V1–V3 with tall, wide R waves (R/S ratio >1) in V2. The structure marked **A** in the diagram is suspected. Which of the following coronary arteries is MOST likely occluded in this clinical scenario?
Ready to test yourself?
Test your Medicine knowledge with AI-powered MCQs and detailed explanations — no signup required to try.
Sign up free and practice all 1 Posterior MI MCQs with AI-powered explanations tailored to your performance.
Create Free Account