This illustration shows the anterior view of the heart in a pre-operative and post-operative condition with interruption of the cardiac conduction system. The pre-operative condition highlights the sinoatrial (SA) node, coronary artery, and atrioventricular (AV) node demonstrating forceful contraction of the ventricles due to electrical impulses. The post-operative condition highlights the repositioning of the coronary artery, a small area of ischemia, and demonstrates weaker contraction of the ventricles due to reduced impulses in the area of ischemia.
