title: Comparison of double-balloon and single-balloon enteroscope for therapeutic endoscopic retrograde cholangiography after Roux-en-Y small bowel surgery.
abstract: BACKGROUND
  Roux-en-Y reconstructive surgery excludes the biliopancreatic system from conventional endoscopic access. Balloon-assisted enteroscopy allows therapeutic endoscopic retrograde cholangiopancreatography (ERCP) in these patients, avoiding rescue surgery. The objective of the current study is to compare success and complication rate of double-balloon (DBE) and single-balloon enteroscope (SBE) to perform ERCP in Roux-en-Y patients.
  
  
  METHODS
  Seventy three Roux-en-Y patients with suspected biliary tract pathology underwent balloon-assisted enteroscopy in a tertiary-care center. Retrospective analysis of 95 consecutive therapeutic ERCP procedures was performed to define and compare success and complication rate of DBE and SBE.
  
  
  RESULTS
  Male-female ratio was 28/45 with a mean age of 58 ± 2 years. 30 (32 %) procedures were performed with DBE and 65 (68 %) with SBE. Overall ERCP success rate was 73 % for DBE and 75 % for SBE (P = 0.831). Failure was due to inability to reach or cannulate the intact papilla or bilioenteric anastomosis. Success rate was significantly higher when performed at the bilioenteric anastomosis (80 % success in 56 procedures) or at the intact papilla in short-limb Roux-en-Y (80 % in 15 procedures) as compared to the intact papilla in long-limb (58 % in 24 procedures; P = 0.040). Adverse event rates were 10 % (DBE) and 8 % (SBE) (P = 0.707) and mostly dealt with conservatively.
  
  
  CONCLUSIONS
  ERCP after Roux-en-Y altered small bowel anatomy is feasible and safe using both DBE and SBE. Both techniques are equally competent with high success rates and acceptable adverse events rates. ERCP at the level of the intact papilla in long limb Roux-en-Y is less successful as compared to short-limb or bilioenteric anastomosis.
authors.affiliation: Department of Gastroenterology & Hepatology, Antwerp University Hospital, Wilrijkstraat 10, B-2650, Antwerp, Belgium.
authors.forename: Michael
authors.initials: M
authors.lastname: De Koning
authors.affiliation: Department of Gastroenterology & Hepatology, Antwerp University Hospital, Wilrijkstraat 10, B-2650, Antwerp, Belgium. tmoreels@gmail.com.
authors.forename: Tom G
authors.initials: TG
authors.lastname: Moreels
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000713:Anastomosis, Roux-en-Y; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000009:adverse effects / Q000379:methods*; D058582:Double-Balloon Enteroscopy / Q000009:adverse effects; D005260:Female; D006801:Humans; D007421:Intestine, Small / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D000071085:Single-Balloon Enteroscopy / Q000009:adverse effects
keywords: Balloon-assisted enteroscopy; ERCP; Roux-en-Y