title: A multicenter, prospective trial of total colonoscopy using a short double-balloon endoscope in patients with previous incomplete colonoscopy.
abstract: BACKGROUND
  There is no specific insertion method for patients who previously underwent an incomplete colonoscopy. No multicenter prospective study using a double-balloon endoscope (DBE) for total colonoscopy was previously performed.
  
  
  OBJECTIVE
  To demonstrate the effectiveness and safety of using short DBEs in patients who previously underwent incomplete colonoscopies.
  
  
  METHODS
  A multicenter, prospective trial.
  
  
  METHODS
  Four tertiary care academic centers and 6 community hospitals.
  
  
  METHODS
  Patients with a history of incomplete colonoscopy, ages 20 to 79 years, were included. Exclusion criteria were colonoscopy performed by endoscopists with experience in fewer than 1000 cases, history of colectomy, poor bowel preparation, inflammatory bowel disease, active bowel obstruction, and active bleeding.
  
  
  METHODS
  Total colonoscopies using short DBEs were attempted in all patients.
  
  
  METHODS
  Primary endpoint was the cecal intubation rate. Secondary endpoints were time to cecal intubation, complications, and tolerability.
  
  
  RESULTS
  A total of 110 patients (62 males, median age 66.5 years) were included. Fifty-four patients had a history of abdominal surgery. The cecal intubation rate was 100% (110/110). Median intubation time was 12 minutes (range 4-47 minutes). Mild mucosal tears without symptoms occurred in 1 patient. For 64.5% of patients, intravenous sedatives and/or analgesics were used during examinations. Based on questionnaires, 50.9% had no pain, 31.8% slight pain, and 17.3% tolerable pain. Moreover, 96.4% of patients answered that their examination was more comfortable than their previous colonoscopy.
  
  
  CONCLUSIONS
  Uncontrolled trial.
  
  
  CONCLUSIONS
  The use of a short DBE is an effective and safe method for total colonoscopy in patients who previously underwent incomplete colonoscopies. (
  
  
  BACKGROUND
  UMIN3464.).
authors.affiliation: Department of Gastroenterology, Saku Central Hospital, Saku, Japan.
authors.forename: Kinichi
authors.initials: K
authors.lastname: Hotta
authors.forename: Shinichi
authors.initials: S
authors.lastname: Katsuki
authors.forename: Ken
authors.initials: K
authors.lastname: Ohata
authors.forename: Takashi
authors.initials: T
authors.lastname: Abe
authors.forename: Masaki
authors.initials: M
authors.lastname: Endo
authors.forename: Masaaki
authors.initials: M
authors.lastname: Shimatani
authors.forename: Tadanobu
authors.initials: T
authors.lastname: Nagaya
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Kusaka
authors.forename: Tomoki
authors.initials: T
authors.lastname: Matsuda
authors.forename: Toshio
authors.initials: T
authors.lastname: Uraoka
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Yamaguchi
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Murakami
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Saito
mesh_terms: D000328:Adult; D000368:Aged; D002432:Cecum; D016009:Chi-Square Distribution; D002983:Clinical Competence; D003113:Colonoscopy / Q000009:adverse effects / Q000295:instrumentation*; D054810:Deep Sedation; D058582:Double-Balloon Enteroscopy / Q000009:adverse effects; D005260:Female; D006801:Humans; D007440:Intubation / Q000009:adverse effects; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000209:etiology; D017060:Patient Satisfaction; D013997:Time Factors; D055815:Young Adult