title: Intraoperative sphincter of Oddi manometry in patients with gallstones.
abstract: In seven patients operated on with cholecystectomy for simple gallstones, sphincter of Oddi manometry was performed during surgery. The sphincter was localized as a zone with elevated base-line pressure and phasic contractile activity. Mean value of the amplitude was 90 mm Hg; wave duration, 4 sec; frequency, 5/min; and base-line pressure, 10 mm Hg. No activity was seen in the antrum or duodenum. The plotting of peak-to-peak intervals in a histogram showed that these were evenly distributed around 6 sec or at integrated multiples of this value. This indicates that the sphincter of Oddi is paced. The origin of the pacing is not yet established.
mesh_terms: D000328:Adult; D014670:Ampulla of Vater / Q000503:physiopathology*; D002763:Cholecystectomy; D002769:Cholelithiasis / Q000503:physiopathology*; D004386:Duodenum / Q000503:physiopathology; D005260:Female; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008365:Manometry; D008875:Middle Aged; D011706:Pyloric Antrum / Q000503:physiopathology; D009803:Sphincter of Oddi / Q000503:physiopathology*