Hyperglycemia is associated with poor clinical outcomes in critically ill patients. Most medical societies recommend less stringent glucose control, in the range of 140 to 180 mg/dL, for critically ill patients. In this population, although glucose management is essential, hypoglycemia is associated with increased mortality. Enhancing the amount of time glucose levels are in the target range and minimizing glycemic variability have been associated with improved outcomes in critically ill patients.