Wendy A Brown1, Eileen M Moore2, David A Watters2. 1. Department of Surgery, Monash University, Alfred Health, Melbourne, Victoria, Australia. 2. Department of Surgery, Deakin University, Barwon Health, Geelong, Victoria, Australia.
Abstract
BACKGROUND: There have been several reports that co-infection with the novel coronavirus severe acute respiratory syndrome coronavirus 2 at the time of surgery increases mortality. The aim of this study was to estimate the effect size of coronavirus disease 2019 (COVID-19) on post-operative mortality by performing a systematic review and meta-analysis of the literature. METHODS: A systematic review and meta-analysis of the literature was performed. A search was undertaken using electronic bibliographic databases MEDLINE, EMBASE, PubMed and Cochrane Library to identify eligible studies published from 1 November 2019 until 21 August 2020. Eligible papers for meta-analysis were those that provided mortality rates following elective and emergency surgery in both COVID-19 positive and negative patients. Forest plots and estimates of odds of death related to having COVID-19 were formed using MedCalc version 9.6 software. Funnel plots to assess for publication bias and heterogeneity were formed in Meta-Essentials. RESULTS: There were 140 records screened for inclusion. Full texts of 39 articles were reviewed, and 36 articles were included in the qualitative synthesis. There were eight studies eligible for meta-analysis. There was a total of 193 operations performed on patients with a concurrent COVID-19 infection and 910 performed on patients who were COVID-19 negative. The odds ratio for mortality in patients who underwent a surgical procedure while COVID-19 positive was 7.9 (95% confidence interval: 3.2-19.4). CONCLUSION: This meta-analysis confirms that concurrent COVID-19 infection increases the risk of surgical mortality. The magnitude of this risk mandates that strategies are developed to mitigate the risk at both an individual and system level.
BACKGROUND: There have been several reports that co-infection with the novel coronavirussevere acute respiratory syndrome coronavirus 2 at the time of surgery increases mortality. The aim of this study was to estimate the effect size of coronavirus disease 2019 (COVID-19) on post-operative mortality by performing a systematic review and meta-analysis of the literature. METHODS: A systematic review and meta-analysis of the literature was performed. A search was undertaken using electronic bibliographic databases MEDLINE, EMBASE, PubMed and Cochrane Library to identify eligible studies published from 1 November 2019 until 21 August 2020. Eligible papers for meta-analysis were those that provided mortality rates following elective and emergency surgery in both COVID-19 positive and negative patients. Forest plots and estimates of odds of death related to having COVID-19 were formed using MedCalc version 9.6 software. Funnel plots to assess for publication bias and heterogeneity were formed in Meta-Essentials. RESULTS: There were 140 records screened for inclusion. Full texts of 39 articles were reviewed, and 36 articles were included in the qualitative synthesis. There were eight studies eligible for meta-analysis. There was a total of 193 operations performed on patients with a concurrent COVID-19infection and 910 performed on patients who were COVID-19 negative. The odds ratio for mortality in patients who underwent a surgical procedure while COVID-19 positive was 7.9 (95% confidence interval: 3.2-19.4). CONCLUSION: This meta-analysis confirms that concurrent COVID-19infection increases the risk of surgical mortality. The magnitude of this risk mandates that strategies are developed to mitigate the risk at both an individual and system level.
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