during induced hypotension , plasma epinephrine and norepinephrine concentrations increased significantly in both groups ( 454 +/- 42 and 730 +/- 58 pg/ml in the untreated patients , 160 +/- 48 and 419 +/- 67 pg/ml in the propranolol premedicated patients ) , but the increase in catecholamines was significantly greater in the untreated patients .
C0014563
epinephrine
C0028351
norepinephrine