[The influences of anesthetic methods on intraoperative cholangiometry (author's transl)].

The influence of several anaesthetic methods on the tonus of the sphincter of Oddi was investigated in 45 selected patients undergoing cholecystectomy (halothane; fentanyl; fentanyl-droperidol (DHB); all in combination with N2O:O2 and relaxant). The fentanyl collective showed a significant rise of the common bile duct pressure, while the fentanyl-DHB and the halothane collectives did not show any statistical difference in their parameters. From these results neuroleptanalgesia appears to be a surtable method for biliary surgery.