الفهرس 
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Abstract
CAD is the symptomatic presentation of coronary atherosclerosis, which causes narrowing of the coronary vessel lumen, which leads to a reduction in blood and oxygen supply induce ischemia in the myocardium.
Coronary arteries disease (CAD) is a leading cause of death for both men and women in developed countries, about 50% of CAD patients die after myocardial infarction (MI) without prior symptoms.
Coronary artery bypass graft (CABG) surgery is the standard of care in the treatment of advanced coronary artery disease at this operation various conduits are used and could be divided into arterial and venous grafts.
Venous grafts have the tendency to develop partial or complete occlusions with time, but arterial grafts have shown relative resistance to plaque formation and obstruction.
However, arterial grafts are more limited in their availability in comparison to venous grafts, specifically the saphenous vein grafts, therefore saphenous vein grafts (SVGs) remain the most commonly used conduit.