ATI RN
Pediatric Endocrine System Questions
Question 1 of 5
Levothyroxine (I-T4) given orally is the treatment of choice in congenital hypothyroidism. The recommended initial starting dose is
Correct Answer: D
Rationale: Initial dose for congenital hypothyroidism is 10-15 μg/kg/day (E) to normalize T4 quickly.
Question 2 of 5
Hypocalcemia is common in neonates between 12 and 72 hr of life, especially in infants with
Correct Answer: D
Rationale: Hypomagnesemia (D) strongly correlates with neonatal hypocalcemia due to impaired PTH release.
Question 3 of 5
Parathyroid crisis is manifested by the following EXCEPT
Correct Answer: B
Rationale: Progressive polyuria (B) is not typical of hypercalcemic crisis; it’s more associated with diabetes insipidus.
Question 4 of 5
The MOST common cause of primary adrenal insufficiency in infancy is
Correct Answer: A
Rationale: Congenital adrenal hyperplasia (A), especially 21-hydroxylase deficiency, is the most common cause in infancy.
Question 5 of 5
The signs and symptoms of congenital adrenal hyperplasia (salt wasting form of the disease) caused by 21-hydroxylase deficiency typically first develop in affected infants at approximately
Correct Answer: B
Rationale: Salt-wasting CAH symptoms typically appear at 1-2 weeks (B) due to aldosterone deficiency.