Intest Res.  2018 Apr;16(2):293-298. 10.5217/ir.2018.16.2.293.

Prospective analysis of factors associated with inadequate bowel preparation for colonoscopy in actual clinical practice

Affiliations
  • 1Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea. kokim@yu.ac.kr

Abstract

BACKGROUND/AIMS
Inadequate bowel preparation can result in prolonged procedure time and increased missed lesion and complication rates. This prospective study aimed to evaluate bowel preparation quality and identify the predictive factors for inadequate bowel preparation in actual clinical practice.
METHODS
We included 399 patients who underwent colonoscopy between June 2015 and July 2016. Using the Aronchick bowel preparation scale, we defined a score ≤2 as adequate preparation and a score >2 as inadequate preparation.
RESULTS
Mean patient age was 58.38±12.97 years; 60.6% were male. Indications for colonoscopy included screening (69.7%) and surveillance after polyp removal (21.3%). A split-dose regimen was prescribed to 55.4% of patients. The inadequate bowel preparation rate was 28.1%. Overall, the median time between the last bowel preparation agent dose and start of colonoscopy was 5.0 hours (range, 1.5-16.0 hours); that of the adequate group was 5.0 hours (range, 1.5-16.0 hours); and that of the inadequate group was 5 hours (range, 2-23 hours). The mean bowel preparation scale score of the ascending colon (1.94±0.25) was significantly higher than that of other colon segments. On multivariate analysis, elderly age, history of cerebrovascular disease, history of gastrectomy or appendectomy, and total preparation solution uptake < 2 L were the independent predictors of inadequate bowel preparation.
CONCLUSIONS
The inadequate bowel preparation rate was 28.1%. Risk factors included elderly age and history of cerebrovascular disease or abdominal surgery. Patients with these risk factors require special care and education.

Keyword

Bowel preparation; Colonoscopy; Polyethylene glycols; Quality; Risk factors

MeSH Terms

Aged
Appendectomy
Cerebrovascular Disorders
Colon
Colon, Ascending
Colonoscopy*
Education
Gastrectomy
Humans
Male
Mass Screening
Multivariate Analysis
Polyethylene Glycols
Polyps
Prospective Studies*
Risk Factors
Polyethylene Glycols

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