- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05189912
Clinical Study on the Application of a Specimen Retrieving Bag to Reduce the Polyp Fragmentation Rate
Clinical Study on the Application of a Specimen Retrieving Bag in Endoscopic Polypectomy to Reduce the Polyp Fragmentation Rate
It is necessary to retrieve the resected polyp to determine the pathological nature of polyp and to judge the completeness of resection in polypectomy. For polyps with a larger diameter (>5mm), the most reliable way to retrieve them is to suck them out with the colonoscope. However, this method requires multiple colonoscope insertions, resulting in prolonged operation time and increased patient suffering. Therefore, clinicians often receive polyps by pressing the colonoscope suction valve. But it is difficult to receive polyps or even fail to receive. Even if the polyps were successfully received by this method, many polyps were fragmented. When the polyp is fragmented, the pathologist cannot be sure of the completeness of the polyp removal.
By removing the colonoscope suction valve and connecting a polyp trap to suction onto the instrument channel port, the polyp fragmentation rate was reduced greatly. To further reduce the polyp fragmentation rate, while reducing the operation time and colon insertions, we applied the polyp receiving bag in colonoscopy operations. The primary purpose of this study is to evaluate the effectiveness of the application of the polyp retrieving bag to reduce the polyp fragmentation rate.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
After polyp resection, it is necessary to retrieve the resected polyp to determine the pathological nature of polyp and to judge the completeness of resection in polypectomy. For polyps with a small diameter (≤5mm), usually by pressing the suction valve button of the colonoscope, polyps could be completely retrieved through a trap. For polyps with a larger diameter (>5mm), the most reliable way to retrieve them is to suck them out with the colonoscope. However, this method requires multiple colonoscope insertions, resulting in prolonged operation time and increased patient suffering. Therefore, clinicians often receive resected polyps with larger diameters by pressing the colonoscope suction valve. However, it is difficult to receive polyps or even fail to receive. Even if the polyps were successfully received, many polyps were fragmented, and the polyp fragmentation rate can be as high as 36.6%~ 60.3%. When the polyp is fragmented, the pathologist cannot be sure of the completeness of the polyp removal. Due to the possibility of malignant transformation in some polyps, the completeness of polyp resection is essential to guide the following treatment.
Some effective methods were developed to reduce polyp fragmentation, including removing the colonoscope suction valve and connecting a polyp trap to suction onto the instrument channel port. The resulting polyp fragmentation rates are 22.4-43.0% and 18.5%, respectively. To further reduce the polyp fragmentation rate, while reducing the operation time and improving the efficiency of the operation, we applied the polyp receiving bag in colonoscopy operations. In a previous pilot study, the polyp receiving bag has been applied in clinical practice, and its polyp fragmentation rate and polyp recovery failure rate are quite low. The primary purpose of this study is to evaluate the effectiveness of the application of the Polyp retrieving bag to reduce the polyp fragmentation rate.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Yan Liu, MD
- Phone Number: +8613911798288
- Email: 13911798288@163.com
Study Contact Backup
- Name: Jin Dong Chu, MD
- Phone Number: +8615811201126
- Email: chu465292278@163.com
Study Locations
-
-
Beijing
-
Beijing, Beijing, China, 100039
- The Fifth Medical Center of Chinese PLA General Hosptial
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Single polyp, with a diameter of 5-15mm,
- Written informed consent.
Exclusion Criteria:
- Polyps that were not removed en bloc,
- Underlying bleeding disorder,
- The platelet count less than 50×10^9/L,
- Serious cardio-pulmonary, hepatic or renal disease,
- Intolerance to endoscopy,
- Other high-risk conditions or disease (such as massive ascites, etc.),
- Pregnancy.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Specimen retrieving bag group
Resected polyps were retrieved by specimen retrieving bag.
This group was set as a experimental group.
|
Specimen retrieving bag was used to retrieve resected polyps.
|
Active Comparator: Suction group
Resected polyps were retrieved by removing the colonoscope suction valve and connecting a polyp trap to suction onto the instrument channel port. This group was set as a control group. |
Remove the colonoscope suction valve and connect a polyp trap to suction onto the instrument channel port.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Polyp fragmentation rate
Time Frame: 1 day
|
The proportion of fragmented polyps to all polyps.
|
1 day
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Retrieving failure rate
Time Frame: 1 day
|
The proportion of polyps that failed to be retrieved to all polyps removed.
|
1 day
|
The duration time of polyp resection
Time Frame: 1day
|
The duration time of polyp resection to the colonoscopy withdraw from body.
|
1day
|
The insertion times of colonoscopy
Time Frame: 1 day
|
The insertion times of colonoscopy during the operation.
|
1 day
|
Collaborators and Investigators
Investigators
- Principal Investigator: Yan Liu, MD, Beijing 302 Hospital
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Polyp bag frag
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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