title: Impact of previous gastric or colonic resection on polyethylene glycol bowel preparation for colonoscopy.
abstract: BACKGROUND
  Adequate bowel preparation is essential for successful completion of colonoscopy. This study examines whether previous bowel resection affects the quality of bowel preparation.
  
  
  METHODS
  This study prospectively included patients who had gastric or colonic resection (bowel resection group, n = 92) and a control group (n = 92). All patients received 4 L polyethylene glycol (PEG) for bowel preparation. Quality of colonic preparation was assessed using the Aronchick scale (excellent, good, fair, or poor) and was categorized as satisfactory (excellent or good) or unsatisfactory (fair or poor). We analyzed whether previous gastric or colonic resection is associated with unsatisfactory preparation.
  
  
  RESULTS
  Bowel preparation quality was significantly different between the resection group (0, 39.1, 43.5, and 17.4%, for excellent, good, fair, and poor) and control group (3.3, 53.3, 38.0, and 5.5% for excellent, good, fair, and poor, P = 0.011). Inadequate bowel preparation was significantly higher in the resection group than in the control group (60.9% vs. 43.5%, P = 0.018). Univariate analysis revealed height, weight, body mass index, and bowel resection to be predictors of unsatisfactory preparation. Multivariate analysis revealed bowel resection [odds ratio (OR) 2.12; 95% confidence interval (CI): 1.16-3.86] and obesity (body mass index ≥ 25 kg/m(2)) (OR 2.16; 95% CI: 1.13-4.12) to be independent predictors of unsatisfactory preparation. The prevalence of unsatisfactory and poor bowel preparation quality was 79.3 and 37.9% in obese patients with previous bowel resection.
  
  
  CONCLUSIONS
  Previous bowel resection was an independent predictor of unsatisfactory PEG bowel preparation. More attention is needed for patients with previous bowel resection, especially for obese patients.
authors.affiliation: Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong Gangnam-gu, Seoul, Korea.
authors.forename: Seong Woo
authors.initials: SW
authors.lastname: Lim
authors.forename: Yong Woo
authors.initials: YW
authors.lastname: Seo
authors.forename: Dong Hyun
authors.initials: DH
authors.lastname: Sinn
authors.forename: Jin Yong
authors.initials: JY
authors.lastname: Kim
authors.forename: Dong Kyung
authors.initials: DK
authors.lastname: Chang
authors.forename: Jae J
authors.initials: JJ
authors.lastname: Kim
authors.forename: Jong Chul
authors.initials: JC
authors.lastname: Rhee
authors.forename: Sang Goon
authors.initials: SG
authors.lastname: Shim
authors.forename: Young-Ho
authors.initials: YH
authors.lastname: Kim
mesh_terms: D000368:Aged; D016022:Case-Control Studies; D002400:Cathartics / Q000627:therapeutic use*; D003113:Colonoscopy / Q000379:methods* / Q000592:standards; D013505:Digestive System Surgical Procedures; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011092:Polyethylene Glycols / Q000627:therapeutic use*; D011446:Prospective Studies; D011787:Quality of Health Care; D024162:Second-Look Surgery
chemical_list: D002400:Cathartics; D011092:Polyethylene Glycols