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An Insight into Multisystem Inflammatory Syndrome in Adults Associated with Recent SARS-COV-2 Infection: A Case

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Multisystem inflammatory syndrome in adults (MIS-A) is a serious post-COVID-19 condition affecting multiple organs. Early recognition and treatment with IVIg and steroids can improve outcomes in elderly patients.

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Area of Science:

  • Immunology
  • Infectious Diseases
  • Critical Care Medicine

Background:

  • Multisystem inflammatory syndrome in adults (MIS-A) is a rare but severe post-acute coronavirus disease 2019 (COVID-19) complication.
  • MIS-A presents with diverse clinical manifestations, necessitating a high index of suspicion for timely diagnosis and management.
  • Early intervention in MIS-A is crucial to mitigate potential long-term morbidity and mortality associated with COVID-19.

Purpose of the Study:

  • To present a case series of seven adult patients diagnosed with MIS-A following recent COVID-19 infection.
  • To detail the clinical presentations, laboratory findings, and treatment strategies employed in these MIS-A cases.
  • To evaluate the effectiveness of specific therapeutic interventions, including intravenous immunoglobulin (IVIg) and corticosteroids.

Main Methods:

  • A retrospective observational study was conducted on seven patients diagnosed with MIS-A between June and November 2021.
  • Patients met the MMWR criteria for MIS-A and were treated in a single unit post-COVID-19 second wave in India.
  • Data collected included presenting symptoms, clinical and laboratory parameters, management protocols, and patient outcomes.

Main Results:

  • The study analyzed seven MIS-A cases (6 males, 1 female) with a median age of 65 years.
  • All patients had positive COVID-19 serology, with some having prior vaccination or symptomatic infection; none were RT-PCR positive.
  • Commonly affected organs included cardiovascular, renal, gastrointestinal, and central nervous systems, with all cases exhibiting hyperinflammation. Treatment involved steroids (all patients) and IVIg (four patients).

Conclusions:

  • MIS-A is a significant, life-threatening hyperinflammatory syndrome linked to recent SARS-CoV-2 infection, impacting multiple organ systems in adults, including the elderly.
  • Prompt clinical suspicion and diagnostic testing for SARS-CoV-2 are essential for identifying and managing MIS-A.
  • Treatment with IVIg and steroids, alongside standard care, appears effective in managing MIS-A, potentially improving outcomes and reducing mortality.