What is the patency rate of saphenous vein grafts?
Saphenous vein grafts (SVGs) have a declining patency rate with time. Approximately 10% to 25% of them occlude within 1 year of CABG, 1% to 2% occlude each year during the 1 to 5 years after surgery, and 4% to 5% occlude each year between 6 and 10 years postoperatively. After 10 years, 50% to 60% of SVGs are patent, only half of which have no angiographic evidence of atherosclerosis.