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Meta-Analysis
. 2023 Jul 28;29(28):4466-4480.
doi: 10.3748/wjg.v29.i28.4466.

One in four patients with gastrointestinal bleeding develops shock or hemodynamic instability: A systematic review and meta-analysis

Mahmoud Obeidat  1   2 , Brigitta Teutsch  1   2 , Anett Rancz  1   3 , Edina Tari  1   4 , Katalin Márta  1   4 , Dániel Sándor Veres  1   5 , Nóra Hosszúfalusi  1   3 , Emese Mihály  1   3 , Péter Hegyi  1   2   4 , Bálint Erőss  1   2   6
Affiliations
Meta-Analysis

One in four patients with gastrointestinal bleeding develops shock or hemodynamic instability: A systematic review and meta-analysis

Mahmoud Obeidat et al. World J Gastroenterol. .

Abstract

Background: Hemodynamic instability and shock are associated with untoward outcomes in gastrointestinal bleeding. However, there are no studies in the existing literature on the proportion of patients who developed these outcomes after gastrointestinal bleeding.

Aim: To determine the pooled event rates in the available literature and specify them based on the bleeding source.

Methods: The protocol was registered on PROSPERO in advance (CRD42021283258). A systematic search was performed in three databases (PubMed, EMBASE, and CENTRAL) on 14th October 2021. Pooled proportions with 95%CI were calculated with a random-effects model. A subgroup analysis was carried out based on the time of assessment (on admission or during hospital stay). Heterogeneity was assessed by Higgins and Thompson's I2 statistics. The Joanna Briggs Institute Prevalence Critical Appraisal Tool was used for the risk of bias assessment. The Reference Citation Analysis (https://www.referencecitationanalysis.com/) tool was applied to obtain the latest highlight articles.

Results: We identified 11589 records, of which 220 studies were eligible for data extraction. The overall proportion of shock and hemodynamic instability in general gastrointestinal bleeding patients was 0.25 (95%CI: 0.17-0.36, I2 = 100%). In non-variceal bleeding, the proportion was 0.22 (95%CI: 0.14-0.31, I2 = 100%), whereas it was 0.25 (95%CI: 0.19-0.32, I2 = 100%) in variceal bleeding. The proportion of patients with colonic diverticular bleeding who developed shock or hemodynamic instability was 0.12 (95%CI: 0.06-0.22, I2 = 90%). The risk of bias was low, and heterogeneity was high in all analyses.

Conclusion: One in five, one in four, and one in eight patients develops shock or hemodynamic instability on admission or during hospitalization in the case of non-variceal, variceal, and colonic diverticular bleeding, respectively.

Keywords: Gastrointestinal bleeding; Hemodynamic instability; Meta-analysis; Review; Shock; Statistics.

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Conflict of interest statement

Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article.

Figures

Figure 1
Figure 1
PRISMA 2020 flow chart of the screening and selection process of the studies.
Figure 2
Figure 2
Forest plot demonstrating the proportion rates for hemodynamic instability and shock in general gastrointestinal bleeding sources. GIB: Gastrointestinal bleeding.
Figure 3
Figure 3
Forest plot demonstrating the proportion rates for hemodynamic instability and shock in non-variceal bleeding. NVUGIB: Non-variceal upper gastrointestinal bleeding.
Figure 4
Figure 4
Forest plot demonstrating the proportion rates for hemodynamic instability and shock in variceal bleeding. VUGIB: Variceal upper gastrointestinal bleeding.
Figure 5
Figure 5
Forest plot demonstrating the proportion rates for hemodynamic instability and shock in lower gastrointestinal bleeding sources. LGIB: Lower gastrointestinal bleeding.
See this image and copyright information in PMC

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