A preliminary research of the effect of linaclotide combined with compound polyethylene glycol on bowel preparation for colonoscopy / 中华消化内镜杂志

ABSTRACT

Objective:To evaluate the effect of linaclotide combined with compound polyethylene glycol (PEG) on bowel preparation for colonoscopy.Methods:This trial was a multicenter randomized controlled study. Subjects scheduled for colonoscopy in 3 digestive endoscopy centers of The First Affiliated Hospital of Naval Medical University, Shanxi Province People's Hospital and the 900th Hospital of Joint Logistics Support Force from November 2021 to March 2022 were randomly assigned to 3 groups using completely random method. The bowel preparation of group A was 3-day linaclotide with 3 L PEG, that of group B was only 3 L PEG, and group C was 3-day linaclotide with 2 L PEG. The primary outcome was the rate of adequate bowel preparation, and the secondary outcomes were the rate of excellent bowel preparation, the completion rate of bowel preparation and the willingness to repeat the corresponding bowel preparation regimen.Results:A total of 130 subjects were enrolled, including 46 in group A, 43 in group B, and 41 in group C. There was no significant difference among the 3 groups in the rate of adequate bowel preparation [95.7% (44/46), 93.0% (40/43) and 95.1% (39/41), χ2=0.465, P=0.893], the rate of excellent bowel preparation [43.5%(20/46), 25.6% (11/43) and 34.1% (14/41), χ2=3.151, P=0.207], or the completion rate of bowel preparation [95.7% (44/46), 95.3% (41/43) and 100.0% (41/41), χ2=1.909, P=0.544]. However, there were significant differences in the willingness to repeat the corresponding bowel preparation regimen among the 3 groups [89.1% (41/46), 74.4% (32/43) and 100.0% (41/41), χ2=12.862, P=0.002]. The bowel preparation completion and willingness rate of subjects in group C were both 100.0%, which were higher than those in group A and group B. Conclusion:Linaclotide is able to improve the quality of bowel preparation and reduce the amount of PEG.