App-Based Education and Low-Residue Diet for Colonoscopy Preparation

Starting soon · Not applicable

Conditions studied: Bowel Preparation Solution

In brief

This prospective, randomized, evaluator-blind, parallel-group trial is designed to objectively compare the effectiveness of Advanced Bowel Preparation versus Traditional Bowel Preparation in patients undergoing colonoscopy. In this study, "naive patients" are defined as individuals who have never used Bowklean® as a bowel cleansing agent, or those who may have previously used other bowel preparation regimens but have not undergone any bowel cleansing procedure within the past three years. The Traditional Bowel Preparation approach consists of standard paper-based educational handouts and self-managed low residue dietary restrictions. In contrast, the Advanced Bowel Preparation integrates a smartphone based educational app with a Prepackaged Low-Residue Diet. All participants will use Bowklean®, a bowel preparation agent combining sodium picosulfate, magnesium oxide, and anhydrous citric acid. The primary endpoint is the percentage of subjects that achieve adequate cleansing (score ≧ 6) in the Boston Bowel Preparation Scale (BBPS). The secondary endpoints include the percentage of subjects that achieve excellent cleansing (score ≧ 8) in the BBPS, mean score in different colon segments (right, transverse, left), which are assessed with the BBPS, adenoma detection rate, sessile serrated polyp detection rate, and patient satisfaction.

Key facts

Study ID

NCT07395492

Run by

Chang Gung Memorial Hospital

People needed

420

Starts

2026-03-01

Expected to finish

2026-10-21

Last updated by the study team

2026-02-09

Who can join

Age: 18 and older, up to 75. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Male or female 18 to 75 years of age.
• Bowklean naive patient with no bowel preparation in 3 years.
• The subject is scheduled for a colonoscopy.
• Ability to complete the entire procedure and to comply with study instructions.
• Willingness and ability to provide signed informed consent.

You may not qualify if…

• Patients who are unsuitable for Bowklean use due to known contraindications, including but not limited to:
• Allergies or hypersensitivity to Bowklean or its ingredients.
• Severe gastrointestinal conditions (e.g., obstruction, perforation).
• Renal impairment or electrolyte imbalances (e.g., severe hyponatremia).
• Gastrointestinal surgery affects bowel preparation. 2. Patients deemed medically unsuitable for colonoscopy by the physician. 3. Cognitive, language, or other barriers that prevent completion of the questionnaire.
• Non-compliance with the bowel preparation protocol or inability to follow dietary restrictions (e.g., Prepackaged low residue diet, PLD).
• Inability to use or access the mobile APP (e.g., no smartphone, unfamiliarity with APP operations, or technical limitations).
• Participation in other clinical trials.

Full record on ClinicalTrials.gov

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