in untrained dogs , sampled by venipuncture , pentobarbital ( 30 mg/kg iv ) decreased the plasma concentration of epinephrine ( e ) from 146 +/- 9 to 38 +/- 8 ( se ) pg/ml ( n = 46 ) and norepinephrine ( ne ) from 276 +/- 13 to 91 +/- 10 pg/ml ( both p less than 0.0005 ) , suggesting that barbiturate anesthesia suppresses sympathetic outflow in these mildly stressed animals .
C0014563
epinephrine
C0028351
norepinephrine