Coronary Artery Bypass Grafting for Isolated Stenosis of Left Main Trunk : Direct Bypass Grafting to Left Main Trunk

摘要

This study was performed to evaluate the possible advantages of coronary artery bypass grafting (CABG) to left main trunk (LMT) in the treatment of isolated stenosis of LMT. The procedure was that saphenous vein graft (SVG) was anastomosed from the right side of the ascending aorta to LMT, and passed through the transverse sinus. From January 1970 to January 2000, patients with isolated stenosis of LMT underwent CABG to LMT (n=18, group A) or underwent conventional CABG (n=30, group B). Graft patency rate was 100% in group A and 96.1% in group B. Kaplan-Meier actuarial survival rate at 10 years was 100% versus 93.3% (p=0.912) and cardiac event-free rate at 10 years was 100% versus 66.0% (p=0.016) , respectively. These events were 3 underwent reoperation and 7 underwent percutaneous transluminal coronary angioplasty a total of 11 times in only group B. No early postoperative or late cardiac death occurred in either group. We concluded that CABG to LMT was better than conventional CABG in this study. It appeared that CABG to LMT could become one of the standard procedures for isolated stenosis of LMT.