[Intrabiliary pressure changes produced by inhalational anesthetics in dogs].
The common bile duct pressure was studied in dogs under inhalation of 1.0 MAC and 2.0 MAC of halothane, enflurane, isoflurane or sevoflurane. A double lumen catheter was inserted into the common bile duct through the cholecystic duct for the measurement of intraductal pressure in the choledochoduodenal junction. The intra-bile-ductal pressure (IBP) was measured with constant rate infusion methods every 10 minutes for one hour. After obtaining control IBP measurements, 44 dogs received randomly either 1.0 MAC (n = 6 in each group) or 2.0 MAC (n = 5 in each group) of each four inhalational anesthetics, through a non-rebreathing system. The decreases in IBP produced by 1.0 MAC concentrations of four inhalation anesthetics were not statistically significant although there was a decline from control measurements obtained for each group. The elevations of IBP following 2.0 MAC halothane, isoflurane or sevoflurane were significantly depressed and were 38.3 +/- 21.2, 67.5 +/- 23.8, 63.7 +/- 23.7 (%, mean +/- SD) of the control levels, respectively. However, 2.0 MAC enflurane produced no significant decrease in IBP.
Iwasaki
H
H
Department of Anesthesiology, Sapporo Medical College & Hospital.
Igarashi
M
M
Yamasawa
Y
Y
Namiki
A
A
D000769:Anesthesia, Inhalation; D000777:Anesthetics / Q000494:pharmacology*; D000818:Animals; D003135:Common Bile Duct / Q000187:drug effects* / Q000502:physiology; D004285:Dogs; D011312:Pressure
D000777:Anesthetics