-HypertensionCongestive Heart Failure-insulin dependent diabetic nephropathy in hypertensive and non hypertensive patients in cases where the serum creatinine level < 2.5 mg/dl.-improve survival following myocardial infarction in clinically stable patients with left ventricular dysfunction manifested as an ejection fraction less or equals to 40% and to reduce the incidence of overt heart failure and subsequent hospitalization for congestive heart failure in these patients.