A 72-year-old man was admitted to the hospital diagnosed with non-ST elevation MI. The patient is scheduled for cardiac catheterization in the following murmur. During the night round, the attending doctor notices a new-onset first-degree atrioventricular block. The patient is known to be left-dominant circulation, what is the affected artery?

Question

Quizplus · Accepted Answer

Eductional Objective: Low degree AV block results from the occlusion of the AV nodal artery. The AV nodal artery branches from the right coronary artery in right-dominant circulation patients. In left-dominant circulation patients, it is derived from the left circumflex artery.

A 72-Year-Old Man Was Admitted to the Hospital Diagnosed with Non-ST