Leng F, Ye CG, Dai HM, Hu N, Zhu XJ, Fang J, Xiang Y, Yang L. Clinical effects of left-colon water exchange colonoscopy vs conventional air-insufflation colonoscopy.
Shijie Huaren Xiaohua Zazhi 2021;
29:972-976. [DOI:
10.11569/wcjd.v29.i16.972]
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Abstract
BACKGROUND
The left colon is difficult to detect via conventional air-injection colonoscopy, and patients may have obvious discomfort during intubation. Studies have reported that water exchange technology can significantly reduce the pain and discomfort of patients during endoscopy. However, there are still few studies comparing the clinical effects of left-colon water exchange (WE) colonoscopy with conventional air-insufflation (AI) colonoscopy.
AIM
To compare the clinical effects of left-colon WE colonoscopy and conventional AI colonoscopy.
METHODS
Consecutive patients who underwent colonoscopy at our hospital from June 2020 to December 2020 were collected and randomly divided into either a left-colon WE colonoscopy group or a conventional AI colonoscopy group at a ratio of 1:1. The success rate of ileocecal insertion, time to cecal insertion, time to colonoscope withdrawal, adenoma detection rate (ADR), visual analogue scale (VAS) score of pain, and rate of complications were recorded in the two groups.
RESULTS
A total of 276 patients were included according to the inclusion and exclusion criteria, including 139 cases in the left-colon WE colonoscopy group and 137 cases in the conventional AI colonoscopy group. There were no statistical differences in the success rate of ileocecal insertion, time to colonoscope withdrawal, or adenoma detection rate between the two groups (P > 0.05). However, time to cecal insertion was significantly shorter (4.6 min vs 5.3 min, P < 0.05) and VAS score was significantly lower (2.7 vs 3.1, P < 0.05) in the left-colon WE colonoscopy group than in the conventional AI colonoscopy group. No examination-related complications such as perforation occurred in either group.
CONCLUSION
Compared with conventional AI colonoscopy, left-colon WE colonoscopy significantly shortens the time to ileocecal insertion and reduces the pain and discomfort of the patients.
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