Aim: Investigate 25-hydroxy
vitamin D (25(
OH)D) levels and the correlation with cardiovascular sequential organ failure assessment (CV-SOFA) and pediatric risk of mortality III (PRISM-III) scores in
critically ill children. Methods: This prospective observational cohort study was conducted on consecutive critical ill children aged 1 month to 14 years old in 1 year. The blood sample was collected upon PICU admission. 25(
OH)D deficiency was defined as<20 ng/mL. We performed univariate and multivariate analyses to evaluate associations with CV-SOFA and PRISM-III scores and other important outcomes. Results: 296
critically ill children were enrolled in the study. The mean serum 25(
OH)D level was 22.5 (IQR 16.3-31.8) ng/mL. The prevalence of 25(
OH)D deficiency was 39.2% in
critically ill children. 25(
OH)D levels were significantly decreased in
septic shock and associated with CV-SOFA and PRISM-III scores. In multivariate analysis,
vitamin D deficiency is associated with CV-SOFA and PRISM-III scores. Conclusion: 25(
OH)D deficiency is prevalent in
critically ill children at PICU admission and seems to be associated with higher CV-SOFA and PRISM-III scores. Our study provides additional data for 25 (
OH) D statuses that impact the outcomes of
critically ill children.