title: Clinical usefulness of a short-type, prototype single-balloon enteroscope for endoscopic retrograde cholangiopancreatography in patients with altered gastrointestinal anatomy: preliminary experiences.
abstract: OBJECTIVE
  A limited number of endoscopic retrograde cholangiopancreatography (ERCP) accessories are compatible with the conventional single-balloon enteroscope (SBE) because of the latter's dimensions. The aim of the present study was to assess the utility of a prototype SBE that has a shorter working length and a wider channel than the conventional SBE.
  
  
  METHODS
  ERCP procedures carried out between January 2012 and July 2013 using the short SBE prototype were reconstructions such as Billroth II (B-II), post-gastrectomy with Roux-en-Y (RY-G), and post-choledochojejunostomy with Roux-en-Y (RY-CJ). We retrospectively analyzed the rate of reaching the blind end of the intestine, the diagnostic success rate, the interventional success rate, and the frequency of related complications.
  
  
  RESULTS
  Twenty-seven ERCP procedures on 18 patients analyzed comprised two B-II, 15 RY-G, and 10 RY-CJ reconstructions. With a mean procedure time of 56 min (range 40-150 min), the rate of reaching the blind end, the diagnostic success rate, and the interventional success rate were 24/27 (89%), 20/27 (74%), and 19/27 (70%), respectively. There were no major ERCP-related complications in any patient.
  
  
  CONCLUSIONS
  The prototype short-type SBE appears safe and effective for use in ERCP, and is compatible with conventional endoscopy accessories.
authors.affiliation: Department of Gastroenterology, Kyoto Second Red Cross Hospital, Kyoto, Japan; Department of Stress Science, Institute of Health Biosciences, Tokushima University Graduate School, Tokushima, Japan.
authors.forename: Takuji
authors.initials: T
authors.lastname: Kawamura
authors.forename: Koji
authors.initials: K
authors.lastname: Uno
authors.forename: Azumi
authors.initials: A
authors.lastname: Suzuki
authors.forename: Koichiro
authors.initials: K
authors.lastname: Mandai
authors.forename: Kojiro
authors.initials: K
authors.lastname: Nakase
authors.forename: Kiyohito
authors.initials: K
authors.lastname: Tanaka
authors.forename: Kenjiro
authors.initials: K
authors.lastname: Yasuda
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000295:instrumentation*; D020776:Endoscopes, Gastrointestinal; D004867:Equipment Design; D005260:Female; D041981:Gastrointestinal Tract / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis / Q000601:surgery*; D012189:Retrospective Studies
keywords: altered gastrointestinal anatomy; balloon-assisted enteroscopy (BAE); endoscopic retrograde cholangiopancreatography (ERCP); prototype; single-balloon enteroscopy (SBE)