ABSTRACT
Pediatric inflammatory multisystem syndrome associated with COVID-19 (PIMS) is a new entity, occurring in children and young adults, associated with the SARS-CoV-2 infection. The first cases of PIMS were found in Poland in May 2020. Since October 2020, a signi-ficant increase in this new disease incidence has been observed in Poland, reflecting the increased incidence of COVID-19 in the pediatric population. PIMS development results from dysregulation of the immune system occurring after ca. 4 weeks after the SARS-CoV-2 infection. Diagnosis is based on criteria: a set of clinical features (including fever and features of multiple organ damage) and elevated inflammatory markers, excluding other cau-ses. The most common complications involve the cardiovascular system: heart damage with decreased left ventricular ejection fraction, shock, and coronary artery abnormalities. Mortality is around 2%. Appropriate management, including vital functions support and immunomodulating treatment, allows for a quick recovery of the vast majority of patients. The following document is a guideline for the diagnostic and therapeutic management of children with suspected PIMS in Poland. © 2021, Wydawnictwo Czelej Sp. z o.o.. All rights reserved.