Vitamin D Deficiency and Critical Illness

Area of Science:

• Pediatric critical care medicine
• Nutritional deficiencies
• Biochemistry

Background:

• Vitamin D deficiency is a growing concern in pediatric populations.
• The role of vitamin D in critical illness is not fully understood.
• Assessing vitamin D status is crucial for critically ill children.

Purpose of the Study:

• To determine the prevalence of vitamin D deficiency in critically ill children.
• To assess the association between vitamin D deficiency and illness severity.
• To explore the relationship with other critical illness outcomes.

Main Methods:

• Prospective observational study of 80 children (2 mo–12 y) in a pediatric intensive care unit.
• Vitamin D levels [25-hydroxy vitamin D, 25(OH)D] measured within the first hour of admission.
• Illness severity assessed using Pediatric Risk of Mortality III (PRISM III) score.

Main Results:

• High prevalence of vitamin D deficiency (83.8%) with 25(OH)D levels < 20 ng/mL.
• Vitamin D deficient children had significantly higher PRISM III scores (10 vs. 6; p=0.0099).
• A significant negative correlation was found between 25(OH)D levels and PRISM III score (ρ=-0.3747; p=0.0006).

Conclusions:

• Vitamin D deficiency is common in critically ill children.
• Lower vitamin D levels are associated with increased illness severity.
• Vitamin D plays a critical role in the health of critically ill children.