Minimal Water Exchange Versus Left Water Exchange in Unsedated Colonoscopy

Ningbo No. 1 Hospital230 enrolled

Overview

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

SUPPORTIVE_CARE

Masking

SINGLE

Enrollment

230

Conditions

Water Exchange Colonoscopy

Interventions

minimal water exchangeOTHER

Use a new technique, minimal water exchange colonoscopy, which adds the infusion of modest amounts of water by constant pressure on the air-water valve button of the endoscope to achieve intubation.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 75 YearsHealthy volunteers:

Medical Language ↔ Plain English

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.

Locations (1)

Ningbo first hospital

Ningbo, Zhejiang, China

Outcomes

Primary Outcomes

VRS-4 pain scores

a 4-point verbal rating scale (VRS-4) with self-explanatory categories (no, slight, moderate, or severe pain).

Time frame: 30 minutes.

Secondary Outcomes

Adenoma detection rate.

The proportion of patients in whom at least one adenoma is detected.

Time frame: 40 minutes.

Data from ClinicalTrials.gov

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