Gut Liver.  2013 Nov;7(6):681-687.

A Clear Liquid Diet Is Not Mandatory for Polyethylene Glycol-Based Bowel Preparation for Afternoon Colonoscopy in Healthy Outpatients

• Jung YS
• Seok HS
• Park DI
• Song CS
• Kim SE
• Lee SH
• Eun CS
• Han DS
• Kim YS
• Lee CK

Abstract

BACKGROUND/AIMS
A dietary regimen consisting of a clear liquid diet (CLD) for at least 24 hours is recommended for colonoscopy preparation. However, this requirement results in problems in patient compliance with bowel preparation. The aim of this study was to evaluate the efficacy of a CLD compared with a regular diet (RD) for colonoscopy preparation using a polyethylene glycol (PEG) solution.
METHODS
This was a multicenter, randomized, investigator-blind prospective study. A total of 801 healthy outpatients undergoing afternoon colonoscopy were randomized to either a CLD or RD in addition to a 4 L PEG regimen.
RESULTS
The quality of bowel cleansing was not different between the CLD and RD groups in terms of the proportion with excellent or good preparation. In addition, no significant differences were observed between the two groups for polyp and adenoma detection rates and overall adverse events. Good compliance with bowel preparation was higher in the RD group than in the CLD group.
CONCLUSIONS
A CLD for a full day prior to colonoscopy should not be mandatory for PEG-based bowel preparation. Dietary education concerning the avoidance of high-fiber foods for 3 days before colonoscopy is sufficient, at least for healthy outpatients.

Keyword

Clear liquid diet; Regular diet; Afternoon colonoscopy; Bowel preparation

MeSH Terms

Adenoma/*diagnosis
Adult
Aged
Ambulatory Care
Cathartics/administration & dosage
Colonic Neoplasms/*diagnosis
Colonic Polyps/diagnosis
Colonoscopy/*methods
*Diet/adverse effects
Dietary Fiber/administration & dosage
Female
Humans
Male
Middle Aged
Operative Time
Patient Compliance
Patient Education as Topic
Polyethylene Glycols/administration & dosage
Single-Blind Method
Time Factors
Cathartics
Polyethylene Glycols