Coronary-artery bypass grafting (CABG) has traditionally been performed with the use of cardiopulmonary bypass (on-pump CABG).
On-pump CABG surgery is performed by taking a small part of a blood vessel from another part of the body, usually a vein from the leg, for use as the graft vessel. In the majority of CABG procedures performed the patient’s heart is stopped temporarily while surgeons use a continuous thread to hand sew vessels together, bypassing the blockages. During this procedure, a mechanical cardiopulmonary bypass machine keeps the blood circulating through the body. The blood is rerouted through the healthy vessel and blood flow is restored to the heart muscle.