1. at receptor antagonists D (4) Acute myocardial infarction and congestive heart failure after -load v 口 cardiac output个 a (5)Pheochromocytoma I pre-and post-operation 口 diagnosis I (6) Others: impotency(4) Acute myocardial infarction and congestive heart failure after-load  cardiac output  (5) Pheochromocytoma pre- and post-operation diagnosis (6) Others: impotency 1.  receptor antagonists