How long do the grafts used in a coronary artery bypass last?

May last several yea: Saphenous vein grafts, if properly harvested and in excellent condition, may last 6-10 years; sometimes longer depending on patients genetics and lifestyle and general medical condition. Arterial conduits, such as radial artery or internal mammary artery, typically last longer by a few years and is the preferred choice whenever possible.

Veins vs arteries: Vein grafts do not last as long as arterial grafts ... Usually less than 10 years for vein grafts ... Left internal mammary artery graft to left anterior descending coronary artery is best ...