On-pump coronary artery bypass graft!
CABG involves the strategic placement of bypass grafts that will provide an alternative route for the blood to flow around the blockage or obstructed arteries. These bypass grafts are composed of other arteries and veins from the body of the patient that are harvested only when they are numerous in their location or their function in their primary location can be safely and effectively taken over by another vein or artery alongside it. The grafts are sewn onto a source of blood supply, most commonly the aorta (the large vessel that arises from the heart), and then in turn onto the coronary artery in a location beyond the blockage. Two types of surgical grafts are used. The first employs native veins, typically a section of the saphenous vein that is sutured from the base of the aorta to a coronary segment downstream from the region of stenosis. The second method uses arterial grafts, commonly an internal mammary artery that can be directly anastomosed distal to a stenotic coronary site. Vein grafts are more vulnerable to atherosclerosis years after the operation compared to arteries.
