Heart disease, particularly coronary artery disease is a major cause of morbidity and mortality among patients with diabetes mellitus . In addition to the increased clinical incidence of coronary artery disease , the extent of coronary arteries stenosed is also greater among diabetics . T his study showes that diabetics, compared to non-diabetics ,have a higher incidence of multiple vessel disease (٨٤٪ vs ٤٨٪) and lower incidence of one vessel disease . It also showes that left ventricular function and left ventricular wall movement are more impaired in diabetics .