Which vessel is most commonly harvested for a coronary artery bypass graft (CABG)?

The most commonly harvested vessel for a coronary artery bypass graft (CABG) is the greater saphenous vein. This vein is preferred due to its adequate length and diameter, making it suitable for bypassing occluded coronary arteries. The saphenous vein is easy to access during surgery, and because it is a superficial vein, it can often be harvested with minimal complications.

The greater saphenous vein is also highly effective in creating a bypass due to its ability to withstand the hemodynamic pressures present in the coronary circulation after being grafted. Surgeons frequently utilize this vein, especially in cases where multiple bypasses are needed or when other arterial grafts may not be available or suitable.

While the internal mammary artery is also used for CABG and is considered an excellent graft with long-term patency rates, it is not as commonly harvested as the greater saphenous vein, primarily because it is tissue being used from near the chest cavity. The radial artery and femoral artery are less frequently used due to considerations related to their accessibility and potential complications associated with harvesting them.