Coronary artery disease (CAD), is a narrowing (stenosis) of one or more of the epicardial coronary arteries. It is most commonly due to the buildup of plaque (atherosclerosis), which impedes the ability of these blood vessels to deliver oxygenated blood to the heart muscle (myocardium). Revascularization of the stenotic vessel either by dilatation using a balloon (also known as angioplasty) or by using a bypass venous graft (also known as coronary...