Multiorgan Inflammatory Syndrome in Adults MIS-A Post SARS-CoV-2 Infection: A Novel Clinical Enigma

Abstract

Background: Multisystem inflammatory syndrome in adults (MIS-A) is an emergent heterogenous clinical syndrome seen in the convalescent phase of COVID-19 infection. MIS in children (MIS-C) is a rare but severe post-COVID-19 illness that has been recognized by the WHO and the Centre for Disease Control and Prevention (CDC). It introduced a similar illness in adults based on multiple case series, identified as MIS-A.

Objective: We present four rare cases of multiorgan inflammatory syndrome in adults (MI-A) presented in Goa Medical College (Tertiary Medical Institute). We would like to highlight the diversity of presentation of symptoms with a significant history of previous covid infection, laboratory abnormalities, the clinical course of the disease, treatment strategies, and response and follow-up findings. We seek to highlight the emergence of a serious clinical entity that can be fatal if not diagnosed or treated promptly.

Materials and methods: This was a descriptive study conducted in Goa Medical College from June 2021 to November 2021. A systematic search in the Department of General Medicine, the Department of Medical Records, and data from ICU, ITU, and critical covid wards were collected.

Results and conclusion: A total of four cases fulfilling the criteria for MIS-A as per MMWR (CDC 2020)were included, ranging from the age group of 29-70 years. All had features of severe systemic inflammatory response with multiple organ dysfunction and elevated proinflammatory markers. All four patients had a recent history of (mild) COVID-19 infection. Hence, in the current pandemic scenario, MIS-A should be considered as a possible diagnosis in patients with recent COVID infection presenting with MODS, when the obvious septic cause is excluded through thorough clinical, physical, serological, laboratory, and radiological investigations. However, the presence of a past covid infection may not be an absolute criterion due to mild symptoms of the primary covid infection which usually go unnoticed resulting in nontesting.