Improvement of Myocardial Stress Perfusion After Off-Pump Revascularization Using Bilateral Internal Thoracic In Situ Grafts Versus Y-Composite Grafts

Myocardial SPECT demonstrated that revascularization using bilateral in situ ITAs exhibited a greater level of improvement with regard to stress perfusion postoperatively compared with Y-composite grafts. However, because there was no considerable difference with regard to postoperative stress perfusion between the two groups, revascularization using a Y-composite graft might also be sufficient for revascularization of the left coronary territory.