Angiographic Evolution of Coronary Atherosclerosis in Patients Receiving Propranolol

To test whether propranolol may influence the progression of coronary atherosclerosis. Repeat coronary angiography after two year treatment and evaluation of changes in coronary narrowings. Subjects with effort angina of recent onset requiring coronary angiography and medical treatment. 80 untreated patients, with a ≥50 percent focal narrowing on a major coronary branch associated or not with a