The primary goal of this project is to determine whether normalizing hyperglycemia is a safe approach to improve multisystem organ function in critically ill children requiring intensive care. The will are conducting the "PedETrol" (the "Pediatric ICUs at Emory-Children's Center Glycemic Control: The PedETrol Trial) Trial, a 4-year single-center, prospective, randomized clinical trial to evaluate the outcome benefit, safety and resource utilization impact of maintaining strict glucose control in children with life-threatening conditions.