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Clinical Trial Summary

High quality bowel preparation is essential for successful colonoscopy. This study aimed to assess the impact of the dose of Polyethylene Glycol(PEG) on the quality of bowel preparation. This prospective, endoscopist-blinded, randomized, controlled study was conducted. 3L-group received 3 bags of PEG and were instructed to drink 1L at 19:00 in the evening before the day of colonoscopy at a rate of 250 mL every 15 minutes, and to drink the remaining 2L 4 to 6 h before colonoscopy at the same rate. 4L-group received 4bags of PEG and were instructed to drink 2 L at 19:00 in the evening before the day of colonoscopy at a rate of 250 mL every 15 minutes, and to drink the remaining 2L 4 to 6 h before colonoscopy at the same rate. The primary outcome was the quality of the bowel preparation according to the Boston Bowel Preparation Scale (BBPS). The secondary outcomes included polyp detection rate (PDR), adenoma detection rate (ADR), tolerance, and subjective feelings of patients.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT03356015
Study type Interventional
Source Changhai Hospital
Contact Zhaosheng Li, MD
Phone +86-21-25070552
Email zhaoshenlismmu@gmail.com
Status Not yet recruiting
Phase Phase 4
Start date December 1, 2017
Completion date February 1, 2018

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