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Review
. 2019 Dec 19;9(1):11.
doi: 10.3390/jcm9010011.

Effects of Encircled Abdominal Compression Device in Colonoscopy: A Meta-Analysis

Toshihiro Nishizawa  1   2 , Hidekazu Suzuki  3 , Hajime Higuchi  2 , Hirotoshi Ebinuma  2 , Osamu Toyoshima  1   4
Affiliations
Review

Effects of Encircled Abdominal Compression Device in Colonoscopy: A Meta-Analysis

Toshihiro Nishizawa et al. J Clin Med. .

Abstract

: Background and Aim: The efficacy of encircling abdominal compression devices in colonoscopies is inconsistent. We performed a meta-analysis of randomized controlled trials (RCTs) in which encircling abdominal compression devices were compared with control in colonoscopies.

Methods: We systematically searched RCTs published in the Cochrane Library, PubMed, and the Igaku-Chuo-Zasshi database. The data from the eligible RCTs were combined using the random-effects model. The weighted mean differences (WMDs), pooled odds ratios (ORs), and 95% confidence intervals (CIs) were calculated.

Results: Five RCTs were included in this meta-analysis. Compared to the control group, encircling abdominal compression devices significantly reduced the caecal intubation time (WMD: -1.31, 95% CI: -2.40 to -0.23, p = 0.02). Compared to the control group, encircling abdominal compression devices significantly decreased the frequency of postural change (OR 0.30, 95% CI: 0.22 to 0.41, p < 0.00001). Compared to the control group, the use of encircling abdominal compression devices significantly reduced the need for abdominal compression (OR: 0.35, 95% CI: 0.17 to 0.70, p = 0.003).

Conclusions: Encircling abdominal compression devices in colonoscopies was found to reduce the caecal intubation time and the frequency of abdominal compression.

Keywords: colonoscopy; encircling abdominal compression device; meta-analysis.

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Conflict of interest statement

The authors declare no conflict of interest

Figures

Figure 1
Figure 1
The effect of an encircled abdominal compression device (A) The elongation of a sigmoid colon without an encircled abdominal compression device. (B) The elongation of a transverse colon without the compression device. (C) Passing of a sigmoid colon with the compression device. Arrows indicate the compression for a sigmoid colon. (D) Passing of a transverse colon with the compression device. Arrows indicate the compression for a transverse and sigmoid colon.
Figure 2
Figure 2
Flow diagram of the literature search and selection process. RCTs: randomized controlled trials.
Figure 3
Figure 3
Forest plot of the weighted mean difference and 95% confidence intervals (CI) for the caecal intubation time in colonoscopy. df: degrees of freedom.
Figure 4
Figure 4
Funnel plot of the included studies for cecal intubation time in colonoscopy.
Figure 5
Figure 5
(A) Forest plot of the odds ratio for postural change in colonoscopy. (B) Forest plot of the odds ratio for abdominal compression in colonoscopy. (C) Forest plot of the weighted mean difference for abdominal pain during colonoscopy.
See this image and copyright information in PMC

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