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Published in: Neurocritical Care 1/2022

16-05-2022 | Edema | Review Article

Perihematomal Edema and Clinical Outcome After Intracerebral Hemorrhage: A Systematic Review and Meta-Analysis

Authors: Sarah Marchina, Jorge A. Trevino-Calderon, Sara Hassani, Joseph M. Massaro, Vasileios-Arsenios Lioutas, Filipa Carvalho, Magdy Selim

Published in: Neurocritical Care | Issue 1/2022

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Abstract

Background

Perihematomal edema (PHE) has been proposed as a radiological marker of secondary injury and therapeutic target in intracerebral hemorrhage (ICH). We conducted a systematic review and meta-analysis to assess the prognostic impact of PHE on functional outcome and mortality in patients with ICH.

Methods

We searched major databases through December 2020 using predefined keywords. Any study using logistic regression to examine the association between PHE or its growth and functional outcome was included. We examined the overall pooled effect and conducted secondary analyses to explore the impact of individual PHE measures on various outcomes separately. Study quality was assessed by three independent raters using the Newcastle–Ottawa Scale. Odds ratios (per 1-unit increase in PHE) and their confidence intervals (CIs) were log transformed and entered into a DerSimonian-Laird random-effects meta-analysis to obtain pooled estimates of the effect.

Results

Twenty studies (n = 6633 patients) were included in the analysis. The pooled effect size for overall outcome was 1.05 (95% CI 1.02–1.08; p < 0.00). For the following secondary analyses, the effect size was weak: mortality (1.01; 95% CI 0.90–1.14), functional outcome (1.04; 95% CI 1.02–1.07), both 90-day (1.06; 95% CI 1.02–1.11), and in-hospital assessments (1.04; 95% CI 1.00–1.08). The effect sizes for PHE volume and PHE growth were 1.04 (95% CI 1.01–1.07) and 1.14 (95% CI 1.04–1.25), respectively. Heterogeneity across studies was substantial except for PHE growth.

Conclusions

This meta-analysis demonstrates that PHE volume within the first 72 h after ictus has a weak effect on functional outcome and mortality after ICH, whereas PHE growth might have a slightly larger impact during this time frame. Definitive conclusions are limited by the large variability of PHE measures, heterogeneity, and different evaluation time points between studies.
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Metadata
Title
Perihematomal Edema and Clinical Outcome After Intracerebral Hemorrhage: A Systematic Review and Meta-Analysis
Authors
Sarah Marchina
Jorge A. Trevino-Calderon
Sara Hassani
Joseph M. Massaro
Vasileios-Arsenios Lioutas
Filipa Carvalho
Magdy Selim
Publication date
16-05-2022
Publisher
Springer US
Keyword
Edema
Published in
Neurocritical Care / Issue 1/2022
Print ISSN: 1541-6933
Electronic ISSN: 1556-0961
DOI
https://doi.org/10.1007/s12028-022-01512-4

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