Abstract
Objectives
Inadequate bowel preparation (BP) negatively affects the efficacy and quality of colonoscopy. Although constipation has already been reported as one of the most important predictors of inadequate BP, there is limited information on the relation between inadequate BP and bowel habits including constipation-related symptoms, medications, and severity of constipation.
Methods
This single-center, prospective observational study was conducted between August 2019 and May 2020. All participants answered questionnaires regarding personal bowel habits and received low-volume polyethylene glycol plus ascorbic acid for outpatient colonoscopy. Severity of constipation was evaluated by constipation scoring system. Bowel preparation cleansing was evaluated using Boston Bowel Preparation Scale (BBPS). Potential predictors of inadequate BP were analyzed using multivariate logistic regression models.
Results
Overall, 1054 patients were enrolled, of which, 105 (10%) had inadequate BP (total BBPS ≤ 6 or any segmental BBPS < 2). The risk of inadequate BP increased with constipation severity (P = 0.01). Multivariate analysis showed that frequent straining (> 25% of defecations) (OR 2.09, 95% CI: 1.33–3.28) and chronic use of stimulant laxatives (OR 2.57, 95% CI: 1.59–4.17) were significant predictors of inadequate BP, among personal bowel habits.
Conclusion
Frequent straining and chronic use of stimulant laxatives were predictors of inadequate BP. An intensified preparation regimen should be considered for severely constipated patients with straining and chronic use of stimulant laxatives.
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Acknowledgments
We would like to thank our medical staff, who helped with data collection.
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This research received no specific grants from any funding agency in the public, commercial, or not-for-profit sectors. Yasuhiro Fujiwara received lecture fees and research grants from EA Pharma Co. Ltd.
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Conception and design: AH, NM, MNa, and TF. Analysis and interpretation of the data: AH, NM, MN, IY, TY, DK, YM, KM, and ES. Writing, review, and/or revision of the manuscript: AH and NM. Study supervision: MN, TF, TA, and YF. All authors reviewed and approved the final manuscript.
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Higashimori, A., Maeda, N., Nakatani, M. et al. Importance of Bowel Habits in Predicting Inadequate Bowel Preparation: A Prospective Observational Study. Dig Dis Sci 68, 4148–4155 (2023). https://doi.org/10.1007/s10620-023-08089-8
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DOI: https://doi.org/10.1007/s10620-023-08089-8