Platelet count and risk of severe illness in hospitalised children with Influenza‐Like illness
Acta Paediatrica(2023)
Abstract
AbstractAimTo examine the clinical significance of thrombocytosis (platelets > 500 × 109/L) in admitted children with an influenza‐like illness.MethodsWe performed a database analysis consisting of patients evaluated at our medical centers with an influenza‐like illness between 2009 and 2013. We included paediatric patients and examined the association between platelet count, respiratory viral infections, and admission outcomes (hospital length of stay and admission to the paediatric intensive care unit) using regression models adjusting for multiple variables.ResultsA total of 5171 children were included in the study cohort (median age 0.8 years; interquartile range, 0.2–1.8; 58% male). Younger age, and not the type of viral infection, was associated with a high platelet count (p < 0.001). Elevated platelet count independently predicted admission outcomes (p ≤ 0.05). The presence of thrombocytosis was associated with an increased risk for a prolonged length of stay (odds ratio = 1.2; 95% Confidence interval = 1.1 to 1.4; p = 0.003) and admission to the paediatric intensive care unit (odds ratio = 1.5; 95% Confidence interval = 1.1 to 2.0; p = 0.002).ConclusionIn children admitted with an influenza‐like illness, a high platelet count is an independent predictor of admission outcomes. Platelet count may be used to improve risk assessment and management decisions in these paediatric patients.
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