04-09-2011, 03:18 PM
A 70 year old man was brought in the hospital by ambulance subsequent to chest pain that lasted 40 minutes. In order to assess the degree of stenosis of his coronary arteries, he underwent coronary angiography, a procedure during which a contrast dye was injected in his coronary vessels. To which phase of the ventricular action potential does visualization of the stenotic lesion correspond?
A. Phase 0
B. Phase 1
C. Phase 2
D. Phase 3
E. Phase 4
A. Phase 0
B. Phase 1
C. Phase 2
D. Phase 3
E. Phase 4