A seven-year-old girl presents with a three-week history of nocturnal polyuria. Her mother reports that her daughter seems to have lost weight in the past two months, although she has had a good appetite. Laboratory tests reveal that the girl`s serum sodium is 130 mEq/L; potassium, 3.2 mEq/L; glucose, 324 mg/dL; and 1+ketones. Urinalysis reveals a specific gravity of 1.025 and moderate glucose and ketones. Her PE is unremarkable. What are the differentials for consideration? What diagnostic evaluations constitute the ongoing assessment of children with hyperglycemia? What are the acute and chronic complications associated with the child`s condition? What developmental approach will you use with the child? Provide rationale and reference for each answer.