Treatment & prevention of angina pectoris attacks. Maintenance therapy after MI. Acute MI w/ left ventricular failure. Acute left ventricular failure of other origin w/ impending or existing pulmonary edema. Long-term treatment of CHF (alone or w/ cardiac glycosides & diuretics). Chronic right ventricular failure, chronic cor pulmonale.
Very low BP & acute circulatory failure, acute MI w/ low-filling pressure, marked anemia, head trauma, cerebral hemorrhage, severe hypotension or hypovolemia.