The efficacy of the Integrated Water Jet Channel Colonoscopy in Water Exchange Method

Not Applicable

Completed

• Conditions: Colonoscopy; Colon Disease
• Interventions: Device: Water jet channel; Device: Accessory channel

• Registration Number: NCT03279705
• Lead Sponsor: Chih-wei Tseng

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.

Study Timeline

• Study Start: 2017-05-01
• Study First Submitted: 2017-08-24
• Study First Submitted QC: 2017-09-10
• Study First Posted: 2017-09-12
• Primary Completion: 2019-04-01
• Status Verified: 2019-10
• Study Completion: 2019-10-01
• Last Update Submitted: 2019-10-25
• Last Update Posted: 2019-10-29

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 120

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.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Two-channel group	Accessory channel	The colonoscopy was done with the new designed colonoscopy that integrated a separate water jet channel for infusing water. The dirty water was removed through other accessory channel.
One-channel group	Accessory channel	The colonoscopy was done with the traditional colonoscopy. Water exchange was done by using the accessory channel for both infusing and suctioning of water.
Two-channel group	Water jet channel	The colonoscopy was done with the new designed colonoscopy that integrated a separate water jet channel for infusing water. The dirty water was removed through other accessory channel.

Primary Outcome Measures

Name	Time	Method
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.

Trial Locations

Locations (1)

Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation; 🇨🇳 Taipei, Taiwan