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MEDICAL ANIMATION TRANSCRIPT: Different blood vessels may typically be used for the grafts. The internal thoracic arteries in the chest, also known as internal mammary arteries, or the saphenous veins in the legs. For the internal thoracic artery graft, your surgeon will leave the upper end attached to the subclavian artery, and divert the lower end from your chest wall to your coronary artery just beyond the blockage. Your surgeon will then sew the graft into place. For the saphenous vein graft, your surgeon will suture one end to the aorta and the other end to the narrowed artery just beyond the blockage. more