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Which Patient-Related Factors Determine Optimal Bowel Preparation?

  • Endoscopy (P Siersema, Section Editor)
  • Published:
Current Treatment Options in Gastroenterology Aims and scope Submit manuscript

Abstract

Purpose of review

Adequate bowel cleansing before colonoscopy is a simple concept but the high rate of inadequate or incomplete bowel cleanliness and its consequences have been the subject of many studies, guidelines, and meta-analysis. The complexity resides in all the factors surrounding preparation intake such as type and regimen of bowel preparation, diets, compliance, and also patient-related factors that all influence quality of the bowel preparation. The purpose of this review is to focus specifically on patient-related factors and their challenges. Patients with lower GI bleeding are excluded from this review.

Recent findings

Patient factors that may be associated with a poor bowel preparation were searched for in the literature. With regard to patient’s characteristics, higher age, male gender, and socio-economic status (lower income, Medicaid, and lower education) were all associated with higher rates of inadequate bowel preparation. Comorbidities such as inflammatory bowel disease (IBD), in-patients, body mass index (BMI), cirrhosis, constipation, and neurological condition as well as some pharmacotherapy were also associated with inadequate bowel preparation. Studies identifying predictive patient factors as well as those studying these patients in particular showed variability in the strength of the patient factor associations. Patients taking tricyclic antidepressant, narcotics, and those with neurological conditions were identified to have a stronger association with worse bowel cleanliness. Those can be implemented with the current recommendations of split-dosing.

Summary

Identifying individual factors that can impact the quality of bowel cleanliness can be challenging. Some have been well-studied in the literature such as age, in-patient status, or constipation and others such as male gender or higher BMI have required more studies to clearly conclude on any possible association. In many studies, simple recommendations like walking 30 min during the preparation, and additional instructions or support have also been added to instructions to improve motility and compliance.

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Authors and Affiliations

  1. Division of Gastroenterology, McGill University Health Center, McGill University, Montreal, Canada

    Myriam Martel MSc, Maïté Bouchard & Alan N. Barkun MD, CM, FRCP(C), FACP, FACG, AGAF, MSc

  2. Medicine, University of Sherbrooke, Sherbrooke, Canada

    Charles Ménard B.Pharm, MD, FRCPC

  3. Department of Specialties of Internal Medicine, Division of Gastroenterology, Geneva University Hospital, Geneva, Switzerland

    Sophie Restellini MD

  4. Internal Medicine, La Tour Hospital, University of Geneva, Geneva, Switzerland

    Omar Kherad MD, MPH

  5. Division of Gastroenterology, King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia

    Majid Almadi MBBS, MSc, FRCP(C)

  6. Epidemiology and Biostatistics and Occupational Health, McGill University Health Center, McGill University, 1650 Cedar Avenue, D7.346, Montréal, Québec, H3G1A4, Canada

    Alan N. Barkun MD, CM, FRCP(C), FACP, FACG, AGAF, MSc

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  1. Myriam Martel MSc
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  2. Charles Ménard B.Pharm, MD, FRCPC
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  3. Sophie Restellini MD
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  4. Omar Kherad MD, MPH
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  5. Majid Almadi MBBS, MSc, FRCP(C)
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  6. Maïté Bouchard
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  7. Alan N. Barkun MD, CM, FRCP(C), FACP, FACG, AGAF, MSc
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Correspondence to Alan N. Barkun MD, CM, FRCP(C), FACP, FACG, AGAF, MSc.

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Conflicts of Interest

Alan Barkun is a consultant for Pendopharm, Boston Scientific, Olympus Canada, and Cook, and has received arms-length grant funding from Pendopharm. Myriam Martel, Charles Ménard, Sophie Restellini, Omar Kherad, Majid Almadi, and Maïté Bouchard, declare no conflict of interest.

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Martel, M., Ménard, C., Restellini, S. et al. Which Patient-Related Factors Determine Optimal Bowel Preparation?. Curr Treat Options Gastro 16, 406–416 (2018). https://doi.org/10.1007/s11938-018-0208-9

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  • DOI: https://doi.org/10.1007/s11938-018-0208-9

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