title: Evaluation of endoscopic retrograde cholangiopancreatography using a newly developed short-type single-balloon endoscope in patients with altered gastrointestinal anatomy.
abstract: OBJECTIVE
  Endoscopic approaches for pancreatobiliary diseases in patients with altered gastrointestinal anatomy had been impractical until the development of balloon-assisted endoscope (BAE) made it feasible. The aim of the present study was to evaluate the usefulness of a newly developed short-type single-balloon endoscope (s-SBE) for endoscopic retrograde cholangiopancreatography (ERCP) in patients with altered gastrointestinal anatomy.
  
  
  METHODS
  From March 2013 to November 2013, s-SBE-assisted ERCP was done in our hospital in 26 postoperative patients who had surgically altered anatomy. We retrospectively evaluated the success rate of reaching the blind end, the mean time required to reach the blind end, the diagnostic success rate, the therapeutic success rate, the mean procedure time, and complications.
  
  
  RESULTS
  The success rate of reaching the blind end was 92.3%. The mean time required to reach the blind end was 25.3 min. The diagnostic success rate was 91.7%. The diagnostic success rate for naïve papilla was 75%. The mean procedure time was 56.0 min. The success rate of overall s-SBE-assisted ERCP was 84.6%. The complication rate was 3.8%.
  
  
  CONCLUSIONS
  Diagnostic and therapeutic ERCP using a newly developed s-SBE is sufficiently effective.
authors.affiliation: Third Department of Internal Medicine, Kansai Medical University, Osaka, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Shimatani
authors.forename: Makoto
authors.initials: M
authors.lastname: Takaoka
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Ikeura
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Mitsuyama
authors.forename: Kazuichi
authors.initials: K
authors.lastname: Okazaki
mesh_terms: D000328:Adult; D000713:Anastomosis, Roux-en-Y / Q000379:methods; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000295:instrumentation* / Q000379:methods; D015331:Cohort Studies; D020776:Endoscopes, Gastrointestinal; D004867:Equipment Design; D004869:Equipment Safety; D005260:Female; D005500:Follow-Up Studies; D005743:Gastrectomy / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D061646:Operative Time; D016577:Pancreaticoduodenectomy / Q000379:methods; D011446:Prospective Studies; D012086:Reoperation / Q000379:methods; D018570:Risk Assessment; D016896:Treatment Outcome
keywords: Billroth-II gastrectomy; Roux-en-Y reconstruction; biliary cannulation; endoscopic retrograde cholangiopancreatography (ERCP); single-balloon endoscopy