Combined repair of peripheral vascular disease and myocardial revascularization has become accepted treatment in selected patients. Two of our patients underwent such a procedure. One patient suffered an intraoperative dissection of the ascending aorta following myocardial revascularization. Ascending aortic replacement and vein graft reimplantation was accomplished as well as repair of the abdominal aortic aneurysm. Because of this experience we recommend that following myocardial revascularization, aortic cannulation be maintained during repair of the abdominal aortic aneurysm. This allows immediate access to cardiopulmonary bypass should untoward cardiovascular events occur during aneurysm repair.