Documented roles for vitamin D in calcium homeostasis, cardiovascular and respiratory health, inflammation, innate immunity, and neuromuscular function have led to the hypothesis that deficiency might represent a modifiable risk factor for outcomes in critical illness. In recent years, dozens of adult studies have reported both high deficiency rates, and associations between lower vitamin D levels and organ dysfunction, health resource utilization, and mortality in the intensive care unit (ICU). More recently, similar observations have been made in critically ill pediatric populations. The cumulative body of basic science and clinical literature demonstrates that deficiency is common in critical illness and rapid normalization of vitamin D status could improve clinical outcomes and/or reduce health care costs. However, before conducting a phase III trial to determine whether restoration of vitamin D status improves outcomes in the PICU, the appropriate dosing regimen must be identified. Consequently, the investigators propose a phase II, double blind randomized controlled trial to determine a loading therapy dosing regimen that can safely and rapidly normalize vitamin D status in critically ill children.
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Vitamin D Status
Timeframe: 7 days