title: Transenteral bowel preparation for colonoscopy is more comfortable than the traditional method with no inferiority in efficacy.
abstract: BACKGROUND
  Transenteral (TE) administration of a bowel cleanser prior to colonoscopy avoids the discomfort associated with drinking a large volume of unpalatable cleanser.
  
  
  OBJECTIVE
  To explore patient comfort, preference for future colonoscopy, the efficacy and adverse events associated with TE bowel preparation.
  
  
  METHODS
  Bowel preparation is traditionally practised using polyethylene glycol (PEG) + ascorbic acid (ASC), which was the treatment used in the control group (peroral group; PO group). In the study group (TE group), PEG + ASC were administered directly to the third portion of the duodenum through a scope immediately after completing upper gastrointestinal endoscopy.
  
  
  RESULTS
  A higher proportion of subjects in the TE group graded their degree of comfort as very or rather comfortable (28.4 % in the PO group, 65.1 % in the TE group; p = 0.000) and had greater preference for future colonoscopy (69.6 % in the PO group, 82.5 % in the TE group; p = 0.030), compared with the PO group. The TE group had non-inferiority in efficacy compared with the PO group (non-inferiority margin -15 %; lower limit of 95 % confidence interval for difference between success rates -6.4 %, when using the Aronchick Scale, and -7.1 % when using the Ottawa Scale). Nausea or vomiting were more prevalent during preparation in the PO group (46.1 vs. 17.5 %; p = 0.000), and dizziness was more common in the TE group (0 vs. 12.6 %; p = 0.000).
  
  
  CONCLUSIONS
  TE preparation was found to be more comfortable than the traditional peroral method and not inferior in efficacy. The adverse events rate was acceptable.
authors.affiliation: Department of Interanl Medicine, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, 1, Singil-ro, Youngdeunpo-gu, Seoul, 150-950, South Korea, mocjsw@gmail.com.
authors.forename: Sung-Won
authors.initials: SW
authors.lastname: Jung
authors.forename: Da Hye
authors.initials: DH
authors.lastname: Jung
authors.forename: Young Chul
authors.initials: YC
authors.lastname: Shin
authors.forename: In Ho
authors.initials: IH
authors.lastname: Moh
authors.forename: Hana
authors.initials: H
authors.lastname: Yoo
authors.forename: Sung Il
authors.initials: SI
authors.lastname: Jang
authors.forename: Su Rin
authors.initials: SR
authors.lastname: Shin
authors.forename: Jin Bae
authors.initials: JB
authors.lastname: Kim
authors.forename: Sang Hoon
authors.initials: SH
authors.lastname: Park
authors.forename: Myung Seok
authors.initials: MS
authors.lastname: Lee
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001205:Ascorbic Acid / Q000008:administration & dosage; D002400:Cathartics / Q000008:administration & dosage*; D003113:Colonoscopy / Q000379:methods*; D016099:Endoscopy, Gastrointestinal; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D011092:Polyethylene Glycols / Q000008:administration & dosage; D011446:Prospective Studies; D016037:Single-Blind Method; D055815:Young Adult
chemical_list: D002400:Cathartics; D011092:Polyethylene Glycols; D001205:Ascorbic Acid