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Elevated IL-18 predicts poor prognosis in critically ill COVID-19 patients at a Brazilian hospital in 2020-21.

Lucyana Lc CoutinhoCaroline N OliveiraPolianna Lmm AlbuquerqueSandra Mb MotaGdayllon Cavalcante MenesesAlice Mc MartinsGeraldo Bs JuniorMarco Af ClementinoRafhaella Ndg GondimAlexandre HavtLuciano Pg CavalcantiJuliana Nu Yaochite
Published in: Future microbiology (2022)
<b>Background:</b> A dysregulated inflammatory response contributes to decline in patients with COVID-19. This cross-sectional study evaluated biomarkers of unvaccinated patients admitted to the intensive care unit of a hospital in Fortaleza, Brazil. <b>Methods:</b> Twenty cytokines were quantified upon hospital admission; clinical and laboratory data were analyzed, as well as sociodemographic data, to search for an association with clinical outcomes, including fatal (n = 40) or recovered cases (n = 38). <b>Results:</b> Fatal cases exhibited significantly higher levels of IL-18 (p = 0.009); deceased patients were older (p = 0.0001), had a lower number of platelets (p = 0.0063) and higher neutrophil-lymphocyte ratio (p = 0.0230) than those who recovered. <b>Conclusion:</b> These findings indicate that IL-18 is a possible marker to predict poor prognosis in critically ill patients with COVID-19.
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