Risk Factors for Post-ERCP Pancreatitis: A Prospective Multicenter Study
METHODS: A 160-variable database was prospectively collected by a defined protocol on patients undergoing diagnostic or therapeutic ERCP at 15 centers in the Midwest Pancreaticobiliary Group and participating in a randomized controlled study evaluating whether prophylactic corticosteroids will reduce the incidence of post-ERCP pancreatitis. Data were collected prior to the procedure, at the time of procedure, and 24–72 h after discharge. Post-ERCP pancreatitis was diagnosed and its severity graded according to consensus criteria.
RESULTS: Of the 1,115 patients enrolled, diagnostic ERCP with or without sphincter of Oddi manometry (SOM) was performed in 536 (48.1%) and therapeutic ERCP in 579 (51.9%). Suspected sphincter of Oddi dysfunction (SOD) was the indication for the ERCP in 378 patients (33.9%). Pancreatitis developed in 168 patients (15.1%) and was graded mild in 112 (10%), moderate in 45 (4%), and severe in 11(1%). There was no difference in the incidence of pancreatitis or the frequency of investigated potential pancreatitis risk factors between the corticosteroid and placebo groups. By univariate analysis, the incidence of post-ERCP pancreatitis was significantly higher in 19 of 30 investigated variables. In the multivariate risk model, significant risk factors with adjusted odds ratios (OR) were: minor papilla sphincterotomy (OR: 3.8), suspected SOD (OR: 2.6), history of post-ERCP pancreatitis (OR: 2.0), age <60 yr (OR: 1.6), ≥2 contrast injections into the pancreatic duct (OR: 1.5), and trainee involvement (OR: 1.5). Female gender, history of recurrent idiopathic pancreatitis, pancreas divisum, SOM, difficult cannulation, and major papilla sphincterotomy (either biliary or pancreatic) were not multivariate risk factors for post-ERCP pancreatitis.
CONCLUSION: This study emphasizes the role of patient factors (age, SOD, prior history of post-ERCP pancreatitis) and technical factors (number of PD injections, minor papilla sphincterotomy, and operator experience) as the determining high-risk predictors for post-ERCP pancreatitis.
(Am J Gastroenterol 2006;101:139–147)
Document Type: Research Article
Affiliations: 1: Indiana University Medical Center, Indianapolis, Indiana 2: University of Wisconsin, Madison, Wisconsin 3: University of Michigan, Ann Arbor, Michigan 4: Hennepin County Medical Center, Minneapolis, Minnesota 5: GI Consultants Ltd., Milwaukee, Wisconsin 6: The Marshfield Clinic, Marshfield, Wisconsin 7: Milwaukee GI Specialists, Milwaukee, Wisconsin 8: Rockford Gastroenterology Associates, Ltd., Rockford, Illinois 9: University of Pittsburgh, Pittsburgh, Pennsylvania 10: Medical College of Wisconsin, Milwaukee, Wisconsin 11: Washington University, St. Louis, Missouri 12: University of Minnesota Hospital, Minneapolis, Minnesota 13: Rush Presbyterian, Chicago, Illinois 14: University of Louisville, Louisville, Kentucky 15: Gastroenterology Associates, P.C., Arvada, Colorado
Publication date: January 1, 2006