Kahn R, Berg S, Berntson L, Berthold E, Brodin P, Bäckström F, Compagno M, Fasth A, Lingman Framme J, Horne A, Hätting J, Król P, Kukka AJ, Mossberg M, Månsson B, Nordenhäll C, Idring Nordström S, Khammari Nyström F, Palmblad K, Rasti R, Rudolph A, Rydenman K, Sundberg E, Säve‐Söderbergh E, Altman M. Population-based study of multisystem inflammatory syndrome associated with COVID-19 found that 36% of children had persistent symptoms.
Acta Paediatr 2022;
111:354-362. [PMID:
34806789 PMCID:
PMC9011862 DOI:
10.1111/apa.16191]
[Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/16/2021] [Accepted: 11/19/2021] [Indexed: 12/12/2022]
Abstract
Aim
Our aim was to describe the outcomes of multisystem inflammatory syndrome in children (MIS‐C) associated with COVID‐19.
Methods
This national, population‐based, longitudinal, multicentre study used Swedish data that were prospectively collected between 1 December 2020 and 31 May 2021. All patients met the World Health Organization criteria for MIS‐C. The outcomes 2 and 8 weeks after diagnosis are presented, and follow‐up protocols are suggested.
Results
We identified 152 cases, and 133 (87%) participated. When followed up 2 weeks after MIS‐C was diagnosed, 43% of the 119 patients had abnormal results, including complete blood cell counts, platelet counts, albumin levels, electrocardiograms and echocardiograms. After 8 weeks, 36% of 89 had an abnormal patient history, but clinical findings were uncommon. Echocardiogram results were abnormal in 5% of 67, and the most common complaint was fatigue. Older children and those who received intensive care were more likely to report symptoms and have abnormal cardiac results.
Conclusion
More than a third (36%) of the patients had persistent symptoms 8 weeks after MIS‐C, and 5% had abnormal echocardiograms. Older age and higher levels of initial care appeared to be risk factors. Structured follow‐up visits are important after MIS‐C.
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