during epidural anesthesia alone , vasopressin increased tenfold ( 1.7 pg/ml +/- 1.0 sd to 16.8 +/- 13.8 , p less than 0.05 ) , norepinephrine decreased ( 90 pg/ml +/- 31 to 61 +/- 28 , p less than 0.05 ) while epinephrine and renin concentrations remained unchanged .
C0028351
norepinephrine
C0014563
epinephrine