Percutaneous Angioplasty of Totally Occluded Coronary Vein Bypass Grafts: Case Histories

Abstract

Seven patients with totally occluded coronary artery bypass vein grafts underwent percutaneous transluminal angioplasty. All patients had either acute or recent occlusion of the graft itself. In 2 patients the proximal and in 3 the distal anastomosis were also narrowed. The vein graft was successfully dilated in all the patients. Six patients also received direct intragraft thrombolytic therapy during the procedure. Five uncomplicated patients improved clinically. One patient was studied routinely as part of a myocardial infarction-streptokinase protocol and had no symptoms. This patient had a no-reflow phenomenon. One patient did not receive intragraft thrombolytic therapy and the procedure was complicated by embolization with myocardial infarction and a cerebral embolus. In 2 patients, a routine angiogram was performed two to six months after graft dilatation and in both the grafts were patent. Another patient, initially successfully dilated, had recurrent angina and restenosis of the proximal anastomosis ten months after angioplasty; this was successfully redilated.

Angioplasty of acutely or recently totally occluded coronary vein grafts is feasible and improves angina when present. Additional thrombolytic therapy prevents embolization.

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