Aortocoronary saphenous vein bypass grafts. Long-term patency, morphology and blood flow in patients with patent grafts early after surgery.

SUMMARYEarly and late (range 5-73 months, average 2.5 years) postoperative arteriographic studies were performed in 85 patients after saphenous vein aortocoronary bypass surgery. In a prior study (≤ 2 weeks postoperative) of 570 patients with 1197 grafts, arteriography revealed 89.6% early patency o