Systematic Review Highlights Vitamin D Deficiency in Pediatric Intensive Care Units

Importance of Vitamin D

A recent systematic review and meta-analysis has evaluated the prevalence of vitamin D deficiency among children admitted to pediatric intensive care units (PICUs). Vitamin D plays a crucial role in regulating calcium levels within the body. A deficiency in this vitamin is linked to various skeletal conditions and can lead to hypocalcaemia, an electrolyte imbalance characterized by low blood calcium levels. Additionally, vitamin D deficiency can adversely affect the brain, cardiovascular system, respiratory system, and immune system. Given the significance of these systems in critical illnesses, a lack of vitamin D in children can profoundly influence the treatment and progression of several diseases.

Study Overview

A Canadian review published in the journal Critical Care compared the vitamin D levels of pediatric intensive care patients with those of healthy individuals of the same age. The research also examined how vitamin D deficiency in children contributes to increased critical illness and mortality rates. The study analyzed data from observational and case-control studies that included children under 18 years old who were admitted to intensive care. Seventeen studies from eight different countries were part of the analysis, involving a median sample size of 120 children per study, totaling 2,783 children in the systematic review and meta-analysis.

Key Findings

The findings indicated that the average vitamin D levels in PICU patients were significantly lower than those in healthy controls. Notably, 50% of the children admitted to the PICU were diagnosed with vitamin D deficiency. The researchers also found correlations between vitamin D deficiency and the severity of illness, mortality rates, and organ dysfunction.

Significance of the Study

This Canadian study substantiates previous hypotheses regarding the links between vitamin D deficiency and the severity of illnesses in children aged 18 years or younger. It represents the first systematic review focused on vitamin D deficiency in critically ill children. The research is particularly valuable due to its larger sample size compared to earlier studies on the topic. Future investigations into the relationship between increased vitamin D levels and improved health outcomes may enable healthcare professionals to offer more cost-effective and efficient treatments. This review lays a solid foundation for future randomized clinical trials.

Source

Written by Shrishti Ahuja, HBSc
Reference: Mcnally, J. D., Nama, N., O’Hearn, K., Sampson, M., Amrein, K., Iliriani, K., . . . Menon, K. (2017). Vitamin D deficiency in critically ill children: a systematic review and meta-analysis. Critical Care, 21(1). doi:10.1186/s13054-017-1875-y