Patients Judging Bowel Preparation by Using SMARTPHONE Application


High-quality bowel preparation is a prerequisite for colonoscopy. Few studies have evaluated visual aids as a means of improving the quality of bowel preparation. We assess the effect of patient-judging dose adjustment of bowel preparation solution for bowel preparation using SMARTPHONE application on the quality of bowel preparation.

Full Title of Study: “Patients Judging Dose Adjustment of Bowel Preparation Solution for Bowel Preparation by Using SMARTPHONE Application: A Pilot Study”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Parallel Assignment
    • Masking: None (Open Label)
  • Study Primary Completion Date: January 2014

Detailed Description

This was a randomized, prospective, endoscopist-blinded clinical trial in which the efficacy of SMARTPHONE application on the bowel cleansing was inspected. A intervention patients take the picture of stool using SMARTPHONE camera application, and then assess the bowel cleansing result. If the result is "Pass", they stop the addition of bowel preparation agent. but the result is "Fail", so they have the additive bowel preparation agent and repeat using the SMARTPHONE application. After the bowel preparation, Endoscopists, who were blinded to the study group of the patient, immediately completed the Ottawa scale after procedure.


  • Device: SMART arm
    • The SMARTPHONE application for self judging bowel preparation by taking the picture of stool form.

Arms, Groups and Cohorts

  • Experimental: SMART arm
    • Using SMARTPHONE application for self judging bowel preparation
  • No Intervention: Conventional arm
    • Non-using SMARTPHONE application for bowel preparation

Clinical Trial Outcome Measures

Primary Measures

  • bowel cleaning quality according to Ottawa scale scores
    • Time Frame: 3 months

Secondary Measures

  • The consistency of bowel cleansing result by SMARTPHONE application with Ottawa scale scores by colonoscopy
    • Time Frame: 3 months

Participating in This Clinical Trial

Inclusion Criteria

  • Patient who are scheduled for colonoscopy Available to use the SMARTPHONE application and smartphone camera Exclusion Criteria:

  • known or suspected bowel obstruction known pregnancy, breast feeding known allergy to PEG presence of severe illness(renal failure, congestive heart failure, liver failure,), refusal of consent to participate in the study not available to use the SMARTPHONE application and SMARTPHONE camera

Gender Eligibility: All

Minimum Age: 19 Years

Maximum Age: 65 Years

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • Inje University
  • Provider of Information About this Clinical Study
    • Principal Investigator: Jongha Park, Study principal investigator – Inje University
  • Overall Contact(s)
    • Jongha Park, M.D., +82-51-797-0200,

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