Minimal Water Exchange Versus Left Water Exchange in Unsedated Colonoscopy

Ningbo No. 1 Hospital

Status: Completed

Conditions: Water Exchange Colonoscopy

Treatments: Other: minimal water exchange

Study type: Interventional

Funder types: Other

Identifiers

NCT04952142

2021CR320

Details and patient eligibility

About

Minimal water exchange colonoscopy is theoretically more convenient and faster than water exchange colonoscopy. But few studies compared the differences between the two methods. Therefore, we attempted to evaluate the effect of minimal water exchange colonoscopy prospectively.

Enrollment: 230 patients

Sex: All

Ages: 18 to 75 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Patients aged 18 to 75 years for unsedated colonoscopy for colorectal cancer screening, polyp surveillance, or polyp resection were enrolled.

Exclusion criteria

• Patients who underwent sedation or analgesia before colonoscopy, and were reluctant to cooperate or provide informed consent. Those who were suffering from too serious diseases to tolerate the examination. The intestinal segment was incomplete or the colonoscopy did not reach the cecum.

Trial design

Primary purpose: Supportive Care

Allocation: Randomized

Interventional model: Single Group Assignment

Masking: Single Blind

---

230 participants in 2 patient groups

minimal water exchange

Experimental group

Description:

We suctioned the lumen and infused water by constant pressure on the air-water valve button of the endoscope at the rectum to open the lumen.

Treatment:

Other: minimal water exchange

traditional water exchange colonoscopy

No Intervention group

Description:

The water exchange colonoscopy reached the cecum through continuous infusion and suction of water in the whole colon via an additional flushing pump.