A nurse has provided diabetic teaching with the family of a client newly diagnosed with diabetes. The nurse determines that the family understands the reason for having glucagon on hand for emergency home use if the family indicates that the purpose of the medication is to treat

A. Hyperglycemia occurring on "sick days": Glucagon is not used to treat hyperglycemia. During "sick days," clients with diabetes may experience elevated blood glucose levels, but glucagon is not for managing hyperglycemia. Instead, insulin adjustments are made. B. Diabetic ketoacidosis: Glucagon is not used to treat diabetic ketoacidosis (DKA). DKA is a severe complication of diabetes often caused by insulin deficiency, and it requires insulin therapy and fluid management to correct the underlying issues. C. Hyperglycemia from insufficient insulin: Glucagon is not used for hyperglycemia due to insufficient insulin. The treatment for this condition is typically insulin therapy to lower blood glucose levels. D. Hypoglycemia from insulin overdose: Glucagon is used to treat hypoglycemia caused by an insulin overdose, as it helps to raise blood glucose levels quickly by stimulating the liver to release glucose into the bloodstream. It is essential for managing severe hypoglycemia.