- Subject with a contraindication to propranolol (ie cardiogenic shock; sinus bradycardia and greater than first-degree block; Chronic Obstructive Pulmonary Disease and bronchial asthma; patients with known hypersensitivity to Propranolol; assessed by cardiovascular and pulmonary history and examinations including blood pressure, ECG; untreated Pheochromocytoma, Congestive heart failure not controlled by treatment, Prinzmetal's angina)