<prompt> The most common cause of morbidity and mortality in patients undergoing major vascular surgery isRenal complicationsThromboembolic phenomenonCoagulopathiesCardiac complications  <response>: Myocardial performance is the single most important determinant of outcome following a major vascular operation. Non fatal and fatal MIs are the most important and specific outcomes that determine perioperative cardiac morbidity in patient for vascular surgery. 