Bowel Preparation QualityNCT07229066
The Effect of Video-Based Education on Colonoscopy Preparation
A study testing Video Education in people with Bowel Preparation Quality and Colonoscopy, run by Eskisehir Osmangazi University at 1 site in Turkey (Türkiye).
Trial summary
Colonoscopy is a routine procedure for evaluating gastrointestinal symptoms, detecting colorectal cancer, and removing polyps. Its effectiveness depends on patient compliance with bowel preparation instructions. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Bowel Preparation Quality, Colonoscopy, Patient Education
- What is being tested?
- Video Education
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 246 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Jun 2024to 30 Mar 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 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Voluntary participation in the study.
- Outpatient follow-up.
- No prior history of colonoscopy.
- Participant or a household member (spouse, child, parent, sibling) owns and can use a smartphone application.
Who cannot join
- History of major abdominal surgery.
- Suspected obstructive lesion in the gastrointestinal tract on cross-sectional imaging.
- Impaired swallowing reflex.
- Mental disorder.
- Communication difficulties (speech, perception, comprehension problems).
- Congestive heart failure or kidney failure.
- Pregnancy or breastfeeding.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site, 1 recruiting
- Recruiting
Eskisehir Osmangazi University
Eskişehir
Safak Meric Ozgenel, Assistant professor, +902222392979 ext. 2956, mozgenel@ogu.edu.tr
Fatmanur Ince Ozgenel, PhD, +902222392979 ext. 2950, fatmanur_ince@hotmail.com
About this study
Official title: Evaluation of the Effect of Video-Based Education on Bowel Preparation Before Colonoscopy
Colonoscopy is a routine procedure for evaluating gastrointestinal symptoms, detecting colorectal cancer, and removing polyps. Its effectiveness depends on patient compliance with bowel preparation instructions. However, inadequate bowel preparation occurs in 20-25% of colonoscopies, often due to non-adherence, medical conditions, or long waiting times. Poor preparation can reduce examination quality, prevent detection of precancerous lesions, and increase healthcare costs. Video-based education has been shown to be more effective than written or verbal instructions in improving bowel preparation. This study aims to evaluate the effect of video-based education on colonoscopy bowel preparation and contribute evidence to optimize patient compliance.
Read the detailed description
Colonoscopy is a standard procedure performed for the evaluation of gastrointestinal symptoms, colorectal cancer screening, polyp detection, and polyp removal. Colorectal cancer (CRC) is the second leading cause of cancer-related deaths in the United States , and in Türkiye, 21,718 new cases were reported in 2022. These statistics underscore the importance of colonoscopy as a preventive and diagnostic tool.
When conducted properly, colonoscopy is safe and well-tolerated, allowing visualization of the entire colon and distal terminal ileum. The procedure's optimal effectiveness relies heavily on patient compliance with bowel preparation instructions. Unfortunately, inadequate bowel preparation occurs in approximately 20-25% of colonoscopies, often due to non-adherence, medical conditions affecting bowel cleansing, or prolonged waiting times for the procedure.
While interventions addressing medical conditions or waiting times may not always be feasible, non-compliance with preparation instructions represents a modifiable, patient-related factor. Effective bowel preparation requires adherence to dietary recommendations and the use of prescribed laxatives. The quality of preparation impacts examination adequacy, procedure duration, cancellation rates, and the need for repeat colonoscopies. Inadequate preparation can hinder thorough evaluation, prevent detection of precancerous lesions such as polyps, and increase healthcare costs.
Emerging evidence suggests that video-based educational interventions are more effective than traditional written or verbal instructions, phone calls, social media applications, or messaging services in improving patient compliance and bowel preparation quality.
This study aims to assess the effect of video-based education on bowel preparation before colonoscopy. By evaluating its impact on preparation quality and patient adherence, the study seeks to provide evidence for implementing more effective educational strategies in colonoscopy units, thereby optimizing clinical outcomes and resource utilization.
- Conditions
- Bowel Preparation Quality, Colonoscopy, Patient Education
- Being tested
- Video Education
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Video EducationBehavioural
Participants receive routine written and verbal instructions about colonoscopy preparation, including dietary instructions and use of prescribed laxatives. This represents the standard care provided at the study site.
| Study group | Role | What they receive |
|---|---|---|
| Video-based education group for Sodium Picosulfate (0.1 g) sennoside b (3 mg) + Bisacodyl (5 mg) | Experimental | Participants receive a video-based education program explaining colonoscopy preparation steps, diet instructions, and use of laxatives. Receives: Behavioral: Video Education |
| Control group for Sodium Picosulfate (0.1 g) sennoside B (3 mg) + Bisacodyl (5 mg) | No intervention | Participants receive routine written and verbal instructions for colonoscopy preparation. |
| Video-based education group for Sodium Picosulfate (0.1 g) | Experimental | Participants receive a video-based education program explaining colonoscopy preparation steps, diet instructions, and use of laxatives. Receives: Behavioral: Video Education |
| Control group for Sodium Picosulfate (0.1 g) | No intervention | Participants receive routine written and verbal instructions for colonoscopy preparation. |
| Video-based education group for Sennoside A+B (1875 mg) | Experimental | Participants receive a video-based education program explaining colonoscopy preparation steps, diet instructions, and use of laxatives. Receives: Behavioral: Video Education |
| Control group for Sennoside A+B (1875 mg) | No intervention | Participants receive routine written and verbal instructions for colonoscopy preparation. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Quality of Bowel Preparation
The quality of bowel preparation will be assessed on the day of colonoscopy using the Boston Bowel Preparation Scale (BBPS). This scale evaluates cleansing in three segments of the colon. Higher scores indicate better preparation, reflecting patient compliance with dietary and laxative instructions and the effectiveness of the educational intervention.
Measured: Day of Colonoscopy
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Nov 2025
- Study start1 Jun 2024
- Primary completion30 Dec 2025 (estimated)
- Study completion30 Mar 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Bowel Preparation QualityStudies of the same condition, open and under way.
- 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
- Health services research
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Participants will be randomly assigned to either a video-based education group or a control group receiving standard written and verbal instructions. Both groups will be followed in parallel to assess the effect of the intervention on bowel preparation quality before colonoscopy.
- Masking
- None (open label)
- Enrolment
- 246 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Eskisehir Osmangazi University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Şafak Meric Ozgenel, Eskisehir Osmangazi University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07229066
- Sponsor's protocol ID
- ESOGU-OZGENEL-2025-COLONOSCOPY
- Status last verified
- Nov 2025
- First submitted
- 13 Nov 2025
- Last updated
- 14 Nov 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: All requested data can be shared.
Publications
Walker TB, Hengehold TA, Garza K, Rogers BD, Early D. An Interactive Video Educational Tool Does Not Improve the Quality of Bowel Preparation for Colonoscopy: A Randomized Controlled Study. Dig Dis Sci. 2022 Jun;67(6):2347-2357. doi: 10.1007/s10620-021-07215-8. Epub 2021 Aug 25.
PubMed 34435269Chan WK, Saravanan A, Manikam J, Goh KL, Mahadeva S. Appointment waiting times and education level influence the quality of bowel preparation in adult patients undergoing colonoscopy. BMC Gastroenterol. 2011 Jul 28;11:86. doi: 10.1186/1471-230X-11-86.
PubMed 21798022
Study at a glance
From the registry record, last updated by the sponsor on 14 Nov 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of the Effect of Video-Based Education on Bowel Preparation Before Colonoscopy
- ClinicalTrials.gov ID
- NCT07229066
- Acronym / sponsor ID
- ESOGU-OZGENEL-2025-COLONOSCOPY
- Conditions
- Bowel Preparation Quality, Colonoscopy, Patient Education
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 246 participants (estimated)
- Lead sponsor
- Eskisehir Osmangazi UniversityUniversity, hospital or other
- Study start
- 1 Jun 2024 (actual)
- Primary completion
- 30 Dec 2025 (estimated)
- Study completion
- 30 Mar 2026 (estimated)
- First posted
- 14 Nov 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.
Colonoscopy is a routine procedure for evaluating gastrointestinal symptoms, detecting colorectal cancer, and removing polyps. Its effectiveness depends on patient compliance with bowel preparation instructions. However, inadequate bowel preparation occurs in 20-25% of colonoscopies, often due to non-adherence, medical conditions, or long waiting times. Poor preparation can reduce examination quality, prevent detection of precancerous lesions, and increase healthcare costs. Video-based education has been shown to be more effective than written or verbal instructions in improving bowel preparation. This study aims to evaluate the effect of video-based education on colonoscopy bowel preparation and contribute evidence to optimize patient compliance.
Detailed description
Colonoscopy is a standard procedure performed for the evaluation of gastrointestinal symptoms, colorectal cancer screening, polyp detection, and polyp removal. Colorectal cancer (CRC) is the second leading cause of cancer-related deaths in the United States , and in Türkiye, 21,718 new cases were reported in 2022. These statistics underscore the importance of colonoscopy as a preventive and diagnostic tool.
When conducted properly, colonoscopy is safe and well-tolerated, allowing visualization of the entire colon and distal terminal ileum. The procedure's optimal effectiveness relies heavily on patient compliance with bowel preparation instructions. Unfortunately, inadequate bowel preparation occurs in approximately 20-25% of colonoscopies, often due to non-adherence, medical conditions affecting bowel cleansing, or prolonged waiting times for the procedure.
While interventions addressing medical conditions or waiting times may not always be feasible, non-compliance with preparation instructions represents a modifiable, patient-related factor. Effective bowel preparation requires adherence to dietary recommendations and the use of prescribed laxatives. The quality of preparation impacts examination adequacy, procedure duration, cancellation rates, and the need for repeat colonoscopies. Inadequate preparation can hinder thorough evaluation, prevent detection of precancerous lesions such as polyps, and increase healthcare costs.
Emerging evidence suggests that video-based educational interventions are more effective than traditional written or verbal instructions, phone calls, social media applications, or messaging services in improving patient compliance and bowel preparation quality.
This study aims to assess the effect of video-based education on bowel preparation before colonoscopy. By evaluating its impact on preparation quality and patient adherence, the study seeks to provide evidence for implementing more effective educational strategies in colonoscopy units, thereby optimizing clinical outcomes and resource utilization.
Study design
- Primary purpose
- Health services research
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 6
- Model description
- Participants will be randomly assigned to either a video-based education group or a control group receiving standard written and verbal instructions. Both groups will be followed in parallel to assess the effect of the intervention on bowel preparation quality before colonoscopy.
| Arm | Type | Receives |
|---|---|---|
| Video-based education group for Sodium Picosulfate (0.1 g) sennoside b (3 mg) + Bisacodyl (5 mg) | Experimental | Behavioral: Video EducationParticipants receive a video-based education program explaining colonoscopy preparation steps, diet instructions, and use of laxatives. |
| Control group for Sodium Picosulfate (0.1 g) sennoside B (3 mg) + Bisacodyl (5 mg) | No intervention | –Participants receive routine written and verbal instructions for colonoscopy preparation. |
| Video-based education group for Sodium Picosulfate (0.1 g) | Experimental | Behavioral: Video EducationParticipants receive a video-based education program explaining colonoscopy preparation steps, diet instructions, and use of laxatives. |
| Control group for Sodium Picosulfate (0.1 g) | No intervention | –Participants receive routine written and verbal instructions for colonoscopy preparation. |
| Video-based education group for Sennoside A+B (1875 mg) | Experimental | Behavioral: Video EducationParticipants receive a video-based education program explaining colonoscopy preparation steps, diet instructions, and use of laxatives. |
| Control group for Sennoside A+B (1875 mg) | No intervention | –Participants receive routine written and verbal instructions for colonoscopy preparation. |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- Voluntary participation in the study.
- Outpatient follow-up.
- No prior history of colonoscopy.
- Participant or a household member (spouse, child, parent, sibling) owns and can use a smartphone application.
Key exclusion criteria (7 listed)
- History of major abdominal surgery.
- Suspected obstructive lesion in the gastrointestinal tract on cross-sectional imaging.
- Impaired swallowing reflex.
- Mental disorder.
- Communication difficulties (speech, perception, comprehension problems).
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 |
|---|---|---|
| Video EducationParticipants receive routine written and verbal instructions about colonoscopy preparation, including dietary instructions and use of prescribed laxatives. This represents the standard care provided at the study site. | Behavioural | Video-based education group for Sennoside A+B (1875 mg), Video-based education group for Sodium Picosulfate (0.1 g), Video-based education group for Sodium Picosulfate (0.1 g) sennoside b (3 mg) + Bisacodyl (5 mg) |
Primary outcome
Quality of Bowel Preparation
Time frame: Day of Colonoscopy
The quality of bowel preparation will be assessed on the day of colonoscopy using the Boston Bowel Preparation Scale (BBPS). This scale evaluates cleansing in three segments of the colon. Higher scores indicate better preparation, reflecting patient compliance with dietary and laxative instructions and the effectiveness of the educational intervention.
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 Nov 2025.
- Results publication: PubMed 34435269Walker TB, Hengehold TA, Garza K, Rogers BD, Early D. An Interactive Video Educational Tool Does Not Improve the Quality of Bowel Preparation for Colonoscopy: A Randomized Controlled Study. Dig Dis Sci. 2022 Jun;67(6):2347-2357. doi: 10.1007/s10620-021-07215-8. Epub 2021 Aug 25.
- Results publication: PubMed 21798022Chan WK, Saravanan A, Manikam J, Goh KL, Mahadeva S. Appointment waiting times and education level influence the quality of bowel preparation in adult patients undergoing colonoscopy. BMC Gastroenterol. 2011 Jul 28;11:86. doi: 10.1186/1471-230X-11-86.
- Individual participant dataSharing planned: Yes. All requested data can be shared.
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A Multi-Center Randomized Controlled Trial on the Impact of Disease Subtype-Based Active Video Education on Bowel Preparation Quality in Patients With Inflammatory Bowel Disease
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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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Video Education in people with Bowel Preparation Quality and Colonoscopy, run by Eskisehir Osmangazi University at 1 site in Turkey (Türkiye).
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 4 inclusion and 7 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 Nov 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). 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 Safak Meric Ozgenel, Assistant professor (+902222392979 ext. 2956, mozgenel@ogu.edu.tr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Quality of Bowel Preparation (time frame: Day of Colonoscopy). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07229066, which also lists 2 linked publications.
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 Nov 2025.