title: Effects of meperidine on the pancreatic and biliary sphincter.
abstract: BACKGROUND
  Opioids are traditionally avoided during sphincter of Oddi manometry because of indirect evidence suggesting that these agents cause sphincter of Oddi spasm. This study was undertaken to determine the direct effects of meperidine on the biliary and pancreatic sphincter.
  
  
  METHODS
  Forty-seven patients were prospectively evaluated by sphincter of Oddi manometry in the conventional retrograde fashion. Manometry was initially performed with intravenous diazepam sedation alone. The manometry was repeated 3 to 5 minutes after meperidine was administered.
  
  
  RESULTS
  The basal sphincter pressure of the biliary sphincter, pancreatic sphincter, and the combined sphincter group were not significantly altered by meperidine. Concordance (normal versus abnormal) between the basal sphincter pressure before and after meperidine was seen in 44 of 47 patients (94%). Meperidine produced a significant increase in the pancreatic, biliary, and combined sphincter phasic frequency and a significant decrease in the phasic duration. The pancreatic and combined sphincter phasic pressures were significantly reduced following meperidine administration. Seventeen manometry tracings (36%) were believed to be qualitatively better after meperidine, while only four (8.5%; p < .001) were qualitatively better with diazepam alone.
  
  
  CONCLUSIONS
  Meperidine can be used for additional analgesia during sphincter of Oddi manometry if the basal sphincter pressure is the parameter used to determine therapy.
authors.affiliation: Department of Medicine, Indiana University School of Medicine, Indianapolis 46202-5000, USA.
authors.forename: S
authors.initials: S
authors.lastname: Sherman
authors.forename: K
authors.initials: K
authors.lastname: Gottlieb
authors.forename: M F
authors.initials: MF
authors.lastname: Uzer
authors.forename: M T
authors.initials: MT
authors.lastname: Smith
authors.forename: Q E
authors.initials: QE
authors.lastname: Khusro
authors.forename: D T
authors.initials: DT
authors.lastname: Earle
authors.forename: R L
authors.initials: RL
authors.lastname: Brunelle
authors.forename: R H
authors.initials: RH
authors.lastname: Hawes
authors.forename: G A
authors.initials: GA
authors.lastname: Lehman
mesh_terms: D006801:Humans; D008365:Manometry; D008614:Meperidine / Q000494:pharmacology*; D009294:Narcotics / Q000494:pharmacology*; D010179:Pancreas / Q000187:drug effects*; D011446:Prospective Studies; D009803:Sphincter of Oddi / Q000187:drug effects*
chemical_list: D009294:Narcotics; D008614:Meperidine