A glucagon emergency kit is prescribed for a client with type 1 diabetes mellitus. When should the nurse instruct the client and family that glucagon needs to be administered?

A. Before meals to prevent hyperglycemia: Glucagon is not used to prevent hyperglycemia. Instead, it is used in emergency situations to address severe hypoglycemia. Preventing hyperglycemia is typically managed with insulin and other diabetes management strategies, not glucagon. B. When unable to eat during sick days: While it is important to manage blood glucose levels when unable to eat, glucagon is specifically used for severe hypoglycemia rather than during periods of illness where eating is difficult. During sick days, other measures, such as adjusting insulin or seeking medical advice, are more appropriate. C. When signs of severe hypoglycemia occur: This is the correct instruction. Glucagon is an emergency treatment used to rapidly raise blood glucose levels in cases of severe hypoglycemia where the person is unconscious or unable to take oral glucose. Recognizing and administering glucagon during severe hypoglycemic episodes is crucial for preventing complications. D. At the onset of signs of diabetic ketoacidosis: Glucagon is not used to treat diabetic ketoacidosis (DKA). DKA is managed with insulin, fluids, and electrolytes. Glucagon is specifically for severe hypoglycemia and is not indicated for DKA.