Total revascularization with T grafts

Abstract

The T graft is constructed by anastomosing the proximal end of the free right internal thoracic artery to the side of the attached left internal thoracic artery. Besides adding considerable reach to the right internal thoracic artery, this technique allows the left anterior descending coronary artery and its branches to be bypassed with the attached left internal thoracic artery. Two hundred eight-seven patients, aged 34 to 86 years (mean age, 64.6 years) received an average of 4.4 internal thoracic artery to coronary artery anastomoses. Sixty-nine patients had left main disease, 33 were undergoing first-time reoperations, and two were reoperated on for the second time. Ejection fraction ranged from 0.20 to 0.70. Operative mortality was 1.7%. Twenty-six patients had postoperative graft visualization, and 94.7% of the grafts were open. All 45 bypass grafts from the left internal thoracic artery were patent, and 91% of those from the right internal thoracic artery were unobstructed. This procedure requires technical skill with internal thoracic arteries, but it has the potential of significantly improving long-term event-free survival and reducing the need for reoperation in patients undergoing coronary artery bypass grafting.