Variables Influencing Patency of Coronary Artery Bypass Grafts

Of 2700 consecutive patients who had coronary artery bypass surgery during the years 1974–1981, 710 patients (26%) with 1261 coronary anastomosis underwent repeat coronary angiography at a mean interval of 11.6 months after surgery. In addition, 24 patients with 49 grafts were studied at autopsy.