[Demonstration of aortocoronary venous bypasses using digital subtraction angiography].

In 43 patients with a total of 86 aortocoronary bypass grafts digital subtraction angiography was employed in the early post-operative period. Contrast injection into the aortic root allowed in all instances a definitive answer whether the aortocoronary bypass was free or obstructed. The method makes it possible also to assess distal anastomoses and their connected coronary vascular bed.