High blood glucose levels in hospitalized patients with diabetes are associated with increased risk of medical complications. Improved glucose control with insulin injections may improve clinical outcome and prevent some of the hospital complications. It is not known; however, what is the best insulin regimen in hospitalized patients. The use of repeated injections of regular insulin (known as sliding scale regimen) is one of the most commonly used insulin regimen for glucose control in hospitalized patients with diabetes. Recently, the combination of basal and rapid acting insulins has been shown to improve glucose control with lower rate of hypoglycemia (low blood sugar).