Diabetic ketoacidosis is a common problem among known and newly diagnosed diabetic children and adolescents for which they will often seek care in the emergency department (ED). Technological advances are leading to changes in outpatient management of diabetes. The ED physician needs to be aware of the new technologies in the care of diabetic children and comfortable managing patients using continuous subcutaneous insulin infusions. This article reviews the ED management of diabetic ketoacidosis and its associated complications, as well as the specific recommendations in caring for patients using the continuous subcutaneous insulin infusion, serum ketone monitoring, and continuous glucose monitoring.