A nurse is teaching the parents of a child who has diabetes mellitus about the manifestations of hypoglycemia. Which of the following manifestations should the nurse include in the teaching?

Choice A reason: Fruity breath odor is a sign of diabetic ketoacidosis, caused by ketone accumulation in hyperglycemia, not hypoglycemia. Hypoglycemia triggers sympathetic symptoms like sweating, not ketosis. Including this in hypoglycemia teaching is incorrect, as it reflects a hyperglycemic state, requiring different management like insulin and fluids. Choice B reason: Diaphoresis is a hallmark of hypoglycemia in diabetes, resulting from sympathetic nervous system activation in response to low blood glucose (<70 mg/dL). Sweating occurs as the body releases catecholamines to counter hypoglycemia, making this a key manifestation to teach parents for early recognition and glucose administration. Choice C reason: Polyuria is associated with hyperglycemia in diabetes, caused by osmotic diuresis from elevated glucose levels. Hypoglycemia does not cause increased urination, as glucose is low. This is an incorrect manifestation for hypoglycemia teaching, as it reflects poor glycemic control, not low blood sugar. Choice D reason: Dry mucous membranes suggest dehydration, often from hyperglycemia or diabetic ketoacidosis, not hypoglycemia. Hypoglycemia causes diaphoresis and moist skin due to sympathetic activation. This is an incorrect manifestation to include in hypoglycemia teaching, as it does not align with the physiological response to low glucose.