Colonoscopy: Bowel PreparationNCT07165470
Pre-Packaged Low-Residue Diet Assisting Bowel Preparation in Patients With Inflammatory Bowel Disease
A study testing pre-packaged low-residue diet for bowel preparation in people with Colonoscopy: Bowel Preparation and IBD - Inflammatory Bowel Disease, run by Changhai Hospital at 2 sites in China.
Trial summary
The primary objectives of this study are as follows: 1.To evaluate the efficacy of Maifu Changqing® Complete Nutritional Formula Powder in bowel preparation for colonoscopy among inflammatory bowel disease (IBD) patients;2.To enhance nutritional status and procedural comfort during bowel preparation in the IBD… Read more about this study
- Who is it for?
- Ages 18 to 75 years
- Conditions the study is for
- Colonoscopy: Bowel Preparation, IBD - Inflammatory Bowel Disease
- What is being tested?
- pre-packaged low-residue diet for bowel preparation
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 500 participants
- Where
- 2 sitesChina
- Study dates
- 1 Sep 2025to 31 Dec 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 75 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Age: Adult patients between 18 and 75 years old;
- Diagnosis of IBD according to the 2023 Guidelines for the Diagnosis and Treatment of Inflammatory Bowel Disease;
- Voluntary participation in this clinical trial and provision of signed informed consent.
Who cannot join
- Patients with acute IBD, severe conditions, combined with major bleeding, suspected toxic megacolon, CD with severe intestinal stricture, gastrointestinal obstruction, or other conditions deemed unsuitable for colonoscopy by the physician;
- Patients with severe cardiac, pulmonary, hepatic, or renal dysfunction;
- History of previous colorectal surgical resection or use of medications that may affect intestinal motility within one week (e.g., antidepressants, sedatives, calcium channel blockers);
- History of stroke, spinal cord injury, or psychiatric disorders that impair compliance with bowel preparation and colonoscopy;
- Allergy to any component of the administered drugs or meal replacements;
- Pregnant or lactating women, and other individuals considered unsuitable for bowel preparation and colonoscopy by the physician.
Trial locations and contacts
2 sites in 1 country. Contact the study team or a site near you to ask about taking part.
China2 sites, 2 recruiting
- Recruiting
Changhai Hospital
Shanghai, Shanghai Municipality, 200433
Yu Bai, M.D., +8613564665324, md.baiyu@foxmail.com
Zi-xuan He, M.D., zixuan931004@163.com
- Recruiting
Changhai Hospital
Shanghai, Shanghai Municipality, 200433
Zhao-shen Li, 13386273620, zhaoshenli@hotmail.com
About this study
Official title: Pre-Packaged Low-Residue Diet Assisting Bowel Preparation in Patients With Inflammatory Bowel Disease：A National Multicenter Randomized Controlled Clinical Trial
The primary objectives of this study are as follows:
1.To evaluate the efficacy of Maifu Changqing® Complete Nutritional Formula Powder in bowel preparation for colonoscopy among inflammatory bowel disease (IBD) patients;2.To enhance nutritional status and procedural comfort during bowel preparation in the IBD population.
Read the detailed description
The project workflow comprises three consecutive phases: In the initiation phase, key activities include designing the study protocol, developing a bowel preparation assessment questionnaire, and establishing collaborative multicenter partnerships. During the implementation phase, subjects will be randomized into two arms-the control arm receiving conventional low-residue diet and the intervention arm administered Maifu Changqing® Complete Nutritional Formula Powder-with both regimens initiated 24 hours prior to colonoscopy. Clinical data will be systematically collected while Case Report Forms (CRFs) from all participating centers are centrally aggregated. The conclusion phase focuses on CRF quality control through standardized verification procedures to ensure data integrity, completeness, and objectivity according to Good Clinical Practice (GCP) standards.
- Being tested
- pre-packaged low-residue diet for bowel preparation
- Keywords
- bowel preparation, colonoscopy, IBD - Inflammatory Bowel Disease
- Medical subject headings
- Inflammatory Bowel Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
pre-packaged low-residue diet for bowel preparationDietary supplement
Participants will be provided with 6 sachets of pre-packaged low-residue diet one day prior to colonoscopy
| Study group | Role | What they receive |
|---|---|---|
| Nutrition Powder Group | Experimental | Participants will be provided with 6 sachets of pre-packaged low-residue diet one day prior to colonoscopy, to be consumed as needed in multiple servings during the day. Receives: Dietary Supplement: pre-packaged low-residue diet for bowel preparation |
| Standard Low-Residue Diet Group | No intervention | Participants follow standard low-residue diet guidelines (like ESPEN recommendations) for 24 hours before colonoscopy. This includes rice water, congee, noodles, and steamed eggs, while avoiding fruits/juices, vegetables, nuts, and other high-fiber foods. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Bowel preparation adequacy rate
Bowel preparation adequacy rate:Proportion of subjects with a Boston Bowel Preparation Scale (BBPS) score of ≥2 in each segment.The BBPS ranges from 0 to 3 per segment (total score 0-9), with higher scores indicating better bowel cleanliness.
Measured: 6 months
Secondary outcomes (1)
Subject Satisfaction
Subjects' subjective satisfaction with and willingness to repeat the entire bowel preparation process, assessed using a Visual Analogue Scale (VAS).The VAS is a 100-mm horizontal line anchored at "extremely dissatisfied" (0 mm) and "extremely satisfied" (100 mm). Higher scores indicate greater satisfaction.
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Sep 2025
- Study start1 Sep 2025
- Primary completion31 Dec 2026 (estimated)
- Study completion31 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Colonoscopy: Bowel PreparationStudies of the same condition, open and under way.
- More trials run by Changhai HospitalThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 500 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Changhai Hospital
- Sponsor type
- University, hospital or other
- Collaborators
- The First Affiliated Hospital of Anhui Medical University, Ankang Central Hospital, First People's Hospital of Hangzhou, Jiangmen Central Hospital, Subei People's Hospital of Jiangsu Province, Xijing Hospital, The Affiliated Hospital of Qingdao University, RenJi Hospital, Ruijin Hospital, Shanghai 10th People's Hospital, ShuGuang Hospital, Shengli Oilfield Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine
- Responsible party
- Principal investigator, Zhaoshen Li, Changhai Hospital
- Investigators
- Yu Bai, M.D., Principal investigator, Changhai Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07165470
- Sponsor's protocol ID
- CHEC2025-312
- Status last verified
- May 2026
- First submitted
- 1 Sep 2025
- Last updated
- 14 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 14 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Pre-Packaged Low-Residue Diet Assisting Bowel Preparation in Patients With Inflammatory Bowel Disease：A National Multicenter Randomized Controlled Clinical Trial
- ClinicalTrials.gov ID
- NCT07165470
- Acronym / sponsor ID
- CHEC2025-312
- Keywords
- bowel preparation, colonoscopy, IBD - Inflammatory Bowel Disease
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 500 participants (estimated)
- Lead sponsor
- Changhai HospitalUniversity, hospital or other
- Collaborators
- The First Affiliated Hospital of Anhui Medical University, Ankang Central Hospital, First People's Hospital of Hangzhou, Jiangmen Central Hospital, Subei People's Hospital of Jiangsu Province, Xijing Hospital, The Affiliated Hospital of Qingdao University, RenJi Hospital, Ruijin Hospital, Shanghai 10th People's Hospital, ShuGuang Hospital, Shengli Oilfield Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine
- Study start
- 1 Sep 2025 (actual)
- Primary completion
- 31 Dec 2026 (estimated)
- Study completion
- 31 Dec 2026 (estimated)
- First posted
- 10 Sep 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The primary objectives of this study are as follows:
1.To evaluate the efficacy of Maifu Changqing® Complete Nutritional Formula Powder in bowel preparation for colonoscopy among inflammatory bowel disease (IBD) patients;2.To enhance nutritional status and procedural comfort during bowel preparation in the IBD population.
Detailed description
The project workflow comprises three consecutive phases: In the initiation phase, key activities include designing the study protocol, developing a bowel preparation assessment questionnaire, and establishing collaborative multicenter partnerships. During the implementation phase, subjects will be randomized into two arms-the control arm receiving conventional low-residue diet and the intervention arm administered Maifu Changqing® Complete Nutritional Formula Powder-with both regimens initiated 24 hours prior to colonoscopy. Clinical data will be systematically collected while Case Report Forms (CRFs) from all participating centers are centrally aggregated. The conclusion phase focuses on CRF quality control through standardized verification procedures to ensure data integrity, completeness, and objectivity according to Good Clinical Practice (GCP) standards.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Nutrition Powder Group | Experimental | Dietary Supplement: pre-packaged low-residue diet for bowel preparationParticipants will be provided with 6 sachets of pre-packaged low-residue diet one day prior to colonoscopy, to be consumed as needed in multiple servings during the day. |
| Standard Low-Residue Diet Group | No intervention | –Participants follow standard low-residue diet guidelines (like ESPEN recommendations) for 24 hours before colonoscopy. This includes rice water, congee, noodles, and steamed eggs, while avoiding fruits/juices, vegetables, nuts, and other high-fiber foods. |
Who may qualify
- Ages
- 18 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Age: Adult patients between 18 and 75 years old;
- Diagnosis of IBD according to the 2023 Guidelines for the Diagnosis and Treatment of Inflammatory Bowel Disease;
- Voluntary participation in this clinical trial and provision of signed informed consent.
Key exclusion criteria (6 listed)
- Patients with acute IBD, severe conditions, combined with major bleeding, suspected toxic megacolon, CD with severe intestinal stricture, gastrointestinal obstruction, or other conditions deemed unsuitable for colonoscopy by the physician;
- Patients with severe cardiac, pulmonary, hepatic, or renal dysfunction;
- History of previous colorectal surgical resection or use of medications that may affect intestinal motility within one week (e.g., antidepressants, sedatives, calcium channel blockers);
- History of stroke, spinal cord injury, or psychiatric disorders that impair compliance with bowel preparation and colonoscopy;
- Allergy to any component of the administered drugs or meal replacements;
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| pre-packaged low-residue diet for bowel preparationParticipants will be provided with 6 sachets of pre-packaged low-residue diet one day prior to colonoscopy | Dietary supplement | Nutrition Powder Group |
Primary outcome
Bowel preparation adequacy rate
Time frame: 6 months
Bowel preparation adequacy rate:Proportion of subjects with a Boston Bowel Preparation Scale (BBPS) score of ≥2 in each segment.The BBPS ranges from 0 to 3 per segment (total score 0-9), with higher scores indicating better bowel cleanliness.
1 secondary outcome
Subject Satisfaction
Time frame: 6 months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 May 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Yu Bai, M.D. principal investigator
Changhai Hospital
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing pre-packaged low-residue diet for bowel preparation in people with Colonoscopy: Bowel Preparation and IBD - Inflammatory Bowel Disease, run by Changhai Hospital at 2 sites in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 14 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Yu Bai, M.D. (+8613564665324, md.baiyu@foxmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Bowel preparation adequacy rate (time frame: 6 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 May 2026.