Colon Disease, Colonoscopy
Conditions
Keywords
water exchange, water jet channel colonoscopy, colonoscopy, cecal insertion time, adenoma detection rate
Brief summary
This prospective randomized controlled trial compared integrated water jet channel colonoscopy with traditional accessory channel colonoscopy in cecal insertion time among patients undergoing WE method colonoscopy.
Detailed description
When the WE method colonoscopy were done with the accessory channel for both infusing and suctioning of water. The water had to be suctioned or infused alternatively and increaed the insertion time. With the new designed endoscopy that integrated a separate water jet channel for infusing water, infusing and suctioning of water can be done at the same time. Besides, water jet pumping system could provide a powerful jet to help us open the collapse lumen and keep an appropriate distance between the mucosa and the lens, thus preventing loss of visualization. It will help the colonoscopist to find the way during insertion.
Interventions
DEVICEWater jet channel
The separate water jet channel was used for infusing water.
DEVICEAccessory channel
The accessory channel was used for infusing and/or suctioning water
Sponsors
Chih-wei Tseng
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
NONE
Masking description
These codes were contained in pre-arranged opaque envelopes, which were opened immediately before insertion of the colonoscope.
Intervention model description
A total of 120 patients were allocated into one of two groups by computerized randomization. In group A (Two-channel group), clear water was infused through the water jet channel and dirty water was sucked form the accessy channel. In group B (One-channel group), water exchange was done by using the accessory channel for both infusing and suctioning of water.
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* Underwent fully sedative colonoscopy with WE method in the outpatient department
Exclusion criteria
* Age \< 18 years old or \> 80 years old * Without standard colon preparation * Allergy to meperidine or propofol * With a history of partial colectomy * Refusal to provide written informed consent.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| cecal insertion time | 2 hours | Cecal insertion time was defined as the time from insertion into the rectum to the time when the colonoscope tip passed to a point proximal to the ileocecal valve so that the base of cecum was visible. |
Countries
Taiwan
Outcome results
None listed