before the start of anesthesia , the untreated patients had a mean arterial pressure of 102 +/- 3 mm hg , a heart rate of 76 +/- 2 beats/min , and plasma epinephrine and norepinephrine concentrations of 114 +/- 21 and 258 +/- 34 pg/ml , respectively .
C0014563
epinephrine
C0028351
norepinephrine