A nurse in a pediatric clinic is talking with a parent of a toddler. The parent tells the nurse that her toddler drinks a quart of milk a day. The nurse should recognize that the toddler is at risk for which of the following disorders?

A. A 4-year-old preschooler who has status asthmaticus and a pulse oximetry of 95%. While status asthmaticus is a serious condition, a pulse oximetry reading of 95% indicates adequate oxygenation, so this child is not in immediate distress.

B. A 1-year-old infant who has roseola and a temperature of 39°C (102.2°F). While the fever requires monitoring and treatment, roseola is typically a self-limiting illness, and this temperature, while high, is not immediately life-threatening.

C. A 7-year-old child who has diabetes insipidus and a urine specific gravity of 1.002. A urine specific gravity of 1.002 indicates very dilute urine, which is concerning for diabetes insipidus and potential dehydration. This condition requires immediate attention to prevent severe dehydration and electrolyte imbalance.

D. A 10-year-old child who has sickle cell anemia and a pain rating of 6 on a 0 to 10 scale. While managing pain in sickle cell anemia is important, the child’s condition is stable, and pain relief can be addressed after assessing the more urgent case of potential dehydration in the child with diabetes insipidus.

A. Fruity breath odour: This is a sign of diabetic ketoacidosis (DKA), a condition associated with hyperglycemia, not hypoglycaemia.

B. Diaphoresis: Sweating is a common sign of hypoglycemia due to the body's release of adrenaline in response to low blood sugar levels.

C. Dry mucous membranes: This is typically associated with dehydration and hyperglycemia, not hypoglycaemia.

D. Polyuria: Frequent urination is a symptom of hyperglycemia, as the body tries to excrete excess glucose through the urine.