An 8-year-old girl is brought to the GP by her mother for a 12-hour history of deep breathing and lethargy and a one-week history of drinking a lot of water. She has no past medical history. Her mother has Hashimoto thyroiditis. Which of the following is most likely to be seen in this patient?
Anion gap of 10 mEq/L
Hypernatremia
Hypokalemia
Increased glomerular filtration rate
Reduction of serum β-hydroxybutyrate
