A nurse is reinforcing teaching about self-administration of insulin with a parent of a school-age child who has a new diagnosis of diabetes mellitus. Which of the following statements by the parent indicates a need for further 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.

Choice A reason: Switching formula does not address projectile vomiting followed by hunger, suggestive of pyloric stenosis, a mechanical obstruction. Changing formula may delay diagnosis and treatment, risking dehydration or malnutrition. Immediate clinical evaluation is needed to confirm the condition and plan surgical intervention, making this response inappropriate.

Choice B reason: Frequent burping reduces air in the stomach but does not address projectile vomiting from pyloric stenosis, caused by pyloric muscle hypertrophy. This symptom requires surgical evaluation, not feeding adjustments. Burping is ineffective, as the obstruction persists, making clinical evaluation the priority to prevent complications.

Choice C reason: Projectile vomiting with hunger in a 2-month-old suggests pyloric stenosis, requiring urgent clinical evaluation for diagnosis via ultrasound and surgical planning (pyloromyotomy). Prompt assessment prevents dehydration, electrolyte imbalances, and growth issues, making this the appropriate response to ensure timely intervention for this serious condition.

Choice D reason: Oral rehydration solution treats dehydration but does not address the underlying cause of projectile vomiting, likely pyloric stenosis. This delays definitive surgical treatment, risking worsening dehydration or malnutrition. Clinical evaluation is critical to confirm the diagnosis, making rehydration a secondary, not primary, response to the symptoms.