• Gastrointest. Endosc. · Jul 2017

    Randomized Controlled Trial

    Impact of gum chewing on the quality of bowel preparation for colonoscopy: an endoscopist-blinded, randomized controlled trial.

    • Jun Fang, Shu-Ling Wang, Hong-Yu Fu, Zhao-Shen Li, and Yu Bai.
    • Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, China.
    • Gastrointest. Endosc. 2017 Jul 1; 86 (1): 187-191.

    Background And AimsGum chewing can accelerate motility in the GI tract; clinical studies suggested gum chewing can reduce postoperative ileus. However, no trial has investigated the effect of gum chewing on bowel preparation for colonoscopy in addition to polyethylene glycol (PEG). The objective of this study was to investigate whether gum chewing before colonoscopy can increase the quality of bowel preparation.MethodsThis was a single-center, randomized controlled trial. Consecutive patients undergoing colonoscopy were randomized to the gum group or the control group. Patients in the gum group chewed sugar-free gum every 2 hours for 20 minutes each time from the end of drinking 2 L of PEG to the beginning of colonoscopy. Patients in the control group only received 2 L of PEG before colonoscopy. The quality of bowel preparation, procedure time, adenoma detection rate, patients' tolerance, and adverse events were compared.ResultsThree hundred patients were included in the study (150 in the control group, 150 in the gum group). More than 90% of patients in both groups were satisfied with the process of bowel preparation, and the incidence of adverse events was comparable in the 2 groups (41.3% vs 46.0%, P = .42). The mean Boston Bowel Preparation Scale score was 6.2 ± 1.4 and 6.1 ± 1.2 in the control group and the gum group, respectively, and the difference between the 2 groups was not significant (P = .51).ConclusionsThis study indicates that gum chewing does not improve the quality of bowel preparation for colonoscopy, but it can improve patients' satisfaction with the process of bowel preparation and does not have negative effects on cleanliness. (Clinical trials registration number: NCT02507037.).Copyright © 2017 American Society for Gastrointestinal Endoscopy. Published by Elsevier Inc. All rights reserved.

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