title: Passive-bending, short-type single-balloon enteroscope for endoscopic retrograde cholangiopancreatography in Roux-en-Y anastomosis patients.
abstract: OBJECTIVE
  To evaluate short-type-single-balloon enteroscope (SBE) with passive-bending, high-force transmission functions for endoscopic retrograde cholangiopancreatography (ERCP) in patients with Roux-en-Y anastomosis.
  
  
  METHODS
  Short-type SBE with this technology (SIF-Y0004-V01; working length, 1520 mm; channel diameter, 3.2 mm) was used to perform 50 ERCP procedures in 37 patients with Roux-en-Y anastomosis. The rate of reaching the blind end, time required to reach the blind end, diagnostic and therapeutic success rates, and procedure time and complications were studied retrospectively and compared with the results of 34 sessions of ERCP performed using a short-type SBE without this technology (SIF-Y0004; working length, 1520 mm; channel diameter, 3.2 mm) in 25 patients.
  
  
  RESULTS
  The rate of reaching the blind end was 90% with SIF-Y0004-V01 and 91% with SIF-Y0004 (P = 0.59). The median time required to reach the papilla was significantly shorter with SIF-Y0004-V01 than with SIF-Y0004 (16 min vs 24 min, P = 0.04). The diagnostic success rate was 93% with SIF-Y0004-V01 and 84% with SIF-Y0004 (P = 0.17). The therapeutic success rate was 95% with SIF-Y0004-V01 and 96% with SIF-Y0004 (P = 0.68). The median procedure time was 40 min with SIF-Y0004-V01 and 36 min with SIF-Y0004 (P = 0.50). The incidence of hyperamylasemia was 6.0% in the SIF-Y0004-V01 group and 14.7% in the SIF-Y0004 group (P = 0.723). The incidence of pancreatitis was 0% in the SIF-Y0004-V01 group and 5.9% in the SIF-Y0004 group (P > 0.999). The incidence of gastrointestinal perforation was 2.0% (1/50) in the SIF-Y0004-V01 group and 2.9% (1/34) in the SIF-Y0004 group (P > 0.999).
  
  
  CONCLUSIONS
  SIF-Y0004-V01 is useful for ERCP in patients with Roux-en-Y anastomosis and may reduce the time required to reach the blind end.
authors: Hiroshi Yamauchi, Mitsuhiro Kida, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Shuko Tokunaga, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi, Department of Gastroenterology, Kitasato University East Hospital, Kanagawa 252-0380, Japan.
authors: Hiroshi
authors: H
authors: Yamauchi
authors: Hiroshi Yamauchi, Mitsuhiro Kida, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Shuko Tokunaga, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi, Department of Gastroenterology, Kitasato University East Hospital, Kanagawa 252-0380, Japan.
authors: Mitsuhiro
authors: M
authors: Kida
authors: Hiroshi Yamauchi, Mitsuhiro Kida, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Shuko Tokunaga, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi, Department of Gastroenterology, Kitasato University East Hospital, Kanagawa 252-0380, Japan.
authors: Kosuke
authors: K
authors: Okuwaki
authors: Hiroshi Yamauchi, Mitsuhiro Kida, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Shuko Tokunaga, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi, Department of Gastroenterology, Kitasato University East Hospital, Kanagawa 252-0380, Japan.
authors: Shiro
authors: S
authors: Miyazawa
authors: Hiroshi Yamauchi, Mitsuhiro Kida, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Shuko Tokunaga, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi, Department of Gastroenterology, Kitasato University East Hospital, Kanagawa 252-0380, Japan.
authors: Tomohisa
authors: T
authors: Iwai
authors: Hiroshi Yamauchi, Mitsuhiro Kida, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Shuko Tokunaga, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi, Department of Gastroenterology, Kitasato University East Hospital, Kanagawa 252-0380, Japan.
authors: Shuko
authors: S
authors: Tokunaga
authors: Hiroshi Yamauchi, Mitsuhiro Kida, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Shuko Tokunaga, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi, Department of Gastroenterology, Kitasato University East Hospital, Kanagawa 252-0380, Japan.
authors: Miyoko
authors: M
authors: Takezawa
authors: Hiroshi Yamauchi, Mitsuhiro Kida, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Shuko Tokunaga, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi, Department of Gastroenterology, Kitasato University East Hospital, Kanagawa 252-0380, Japan.
authors: Hiroshi
authors: H
authors: Imaizumi
authors: Hiroshi Yamauchi, Mitsuhiro Kida, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Shuko Tokunaga, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi, Department of Gastroenterology, Kitasato University East Hospital, Kanagawa 252-0380, Japan.
authors: Wasaburo
authors: W
authors: Koizumi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000713:Anastomosis, Roux-en-Y / Q000009:adverse effects; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000009:adverse effects / Q000295:instrumentation*; D004066:Digestive System Diseases / Q000175:diagnosis* / Q000601:surgery*; D020776:Endoscopes, Gastrointestinal; D004867:Equipment Design; D005260:Female; D006801:Humans; D034321:Hyperamylasemia / Q000209:etiology; D007416:Intestinal Perforation / Q000209:etiology; D007421:Intestine, Small / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D061646:Operative Time; D010195:Pancreatitis / Q000209:etiology; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome
keywords: Endoscopic retrograde cholangiopancreatography; Passive bending; Roux-en-Y anastomosis; Short type; Single-balloon enteroscope