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Multisystem inflammatory syndrome in children: an Umbrella review

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Abstract

We conducted an Umbrella review of eligible studies to evaluate what patient features have been investigated in the multisystem inflammatory syndrome in children (MIS-C) population, in order to guide future investigations. We comprehensively searched MEDLINE, EMBASE, and Cochrane Database of Systematic Reviews from December 1, 2019 to the May 6, 2022. The time period was limited to cover the coronavirus disease-2019 (COVID-19) pandemic period. The protocol was registered in the PROSPERO registry (CRD42022340228). Eligible studies included (1) a study population of pediatric patients ≤21 years of age diagnosed with MIS-C; (2) an original Systematic review or Mata-analysis; (3) published 2020 afterward; and (4) was published in English. A total of 41 studies met inclusion criteria and underwent qualitative analysis. 28 studies reported outcome data of MIS-C. 22 studies selected clinical features of MIS-C, and 6 studies chose demographic data as a main topic. The mortality rate for children with MIS-C was 1.9% (interquartile range (IQR) 0.48), the ICU admission rate was 72.6% (IQR 8.3), and the extracorporeal membrane oxygenation rate was 4.7% (IQR 2.0). A meta-analysis of eligible studies found that cerebral natriuretic peptide in children with MIS-C was higher than that in children with COVID-19, and that the use of intravenous immunoglobulin (IVIG) in combination with glucocorticoids to treat MIS-C compared to IVIG alone was associated with lower treatment failure. In the future, for patients with MIS-C, studies focused on safety of surgery requiring general anesthesia, risk factors, treatment, and long-term outcomes are warranted.

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Acknowledgements

KA acknowledges the Department of Anesthesiology and Pain Medicine, University of Toronto, and the Hospital for Sick Children, for secured academic time to conduct the current work as a recipient of a Merit Award. All authors acknowledge Mr. Alan Yang, SickKids Research Institute, for his statistical advice.

Funding

This work was supported by Outcomes Research Award 2021–2022 (KA), Department of Anesthesia and Pain Medicine, Hospital for Sick Children, Canadian Anesthesiologists’ Society Research Award 2022–2024 (KA) and Project Grants (PJX179857, PJT183603) 2022–2024, Canadian Institutes of Health Research (KA).

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KA and NS conceived this paper. KA and NS developed the protocol. ME performed the systematic literature searches, managed database results and documentation. NS, MS and KA performed the systematic review and data extraction. NS and KA performed the analysis on the result of the literature search and extracted data. NS and KA wrote the initial draft of the manuscript, and MS, GE and MJ helped draft the final version, which was approved by all authors.

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Correspondence to Kazuyoshi Aoyama.

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Shioji, N., Sumie, M., Englesakis, M. et al. Multisystem inflammatory syndrome in children: an Umbrella review. J Anesth (2024). https://doi.org/10.1007/s00540-024-03323-7

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