Effect of Use of Straw on Tolerability and Quality of Split Dose 4l-PEG Preparation


The purpose of this study is to determine whether patients drinking their bowel preparation solution with a straw will have improved tolerability for ingestion of their bowel preparation solution and achieve a higher bowel preparation quality score than patients drinking their bowel preparation solution without a straw.

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Parallel Assignment
    • Masking: Single (Investigator)
  • Study Primary Completion Date: November 2015


  • Other: Straw
    • Bowel preparation ingestion with a straw

Arms, Groups and Cohorts

  • No Intervention: Routine
    • Subjects will ingest the bowel preparation from a cup
  • Experimental: Straw
    • Subjects will ingest the bowel preparation with a straw

Clinical Trial Outcome Measures

Primary Measures

  • Bowel preparation quality
    • Time Frame: 1 day
    • Bowel preparation quality will be measured using a validated scoring system (Boston Bowel Preparation Score) for bowel preparation

Secondary Measures

  • Tolerability will be measured by subjective survey including a 5-point scale and a visual analog scale filled by the subjects the day of the colonoscopy
    • Time Frame: 1 day

Participating in This Clinical Trial

Inclusion Criteria

  • Patients over 18 y/o scheduled for elective outpatient colonoscopy Exclusion Criteria:

  • History of colonic surgery, Contra-indication for preparation (PEG solution), History of inflammatory bowel disease

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Yale University
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Official(s)
    • Louis A Chaptini, MD, Principal Investigator, Yale School of Medicine

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