Not to be used in hypotensive patients in whom circulatory collapse is associated w/ hypovolaemia except as an emergency measure to maintain supply to the coronary & cerebral arteries until blood vol replacement therapy can be instituted. Major left ventricular dysfunction, acute coronary insufficiency, recent MI, heart rhythm disorders arriving during treatment. Continuously check arterial BP & heart rate during infusion. Must be administered separately w/ total blood or blood plasma.