A nurse is providing teaching to an adolescent who has type 1 diabetes mellitus. Which of the following should the nurse include in the teaching?

A. Glucagon is used to treat severe hypoglycemia, not hyperglycemia. It works by stimulating the liver to release stored glucose, thereby raising blood glucose levels. Administering glucagon during hyperglycemia would worsen the condition. Therefore, this statement is incorrect. B. Insulin should be administered subcutaneously, not intramuscularly. Recommended injection sites include the abdomen, thigh, and upper outer arm (subcutaneous tissue). Injecting into the deltoid muscle can lead to unpredictable absorption and increases the risk of hypoglycemia. This statement is incorrect. C. Clients with type 1 diabetes mellitus are at increased risk for infections due to potential immune compromise and fluctuations in blood glucose levels during illness. Annual influenza vaccination is recommended to reduce the risk of complications. This statement is correct. D. Glyburide is an oral hypoglycemic agent used for type 2 diabetes mellitus. It is not appropriate for clients with type 1 diabetes, who require insulin therapy due to lack of endogenous insulin production. This statement is incorrect.