文摘
BackgroundThe saphenous vein graft (SVG) is widely used in coronary artery bypass grafting because of its availability and ease of use. However, the patency rate of the SVG grafted to the right coronary artery (RCA) is poor. Diameter mismatch between the coronary artery and SVG is an important cause of graft occlusion. In this study, we assessed how the degree of diameter mismatch affects SVG patency.