ATI RN
Endocrine System Pediatric Questions
Question 1 of 5
The cord serum T4 is decreased in proportion to gestational age and birthweight. The serum T4 gradually increases and enters the T4 range seen in term infants by the age of
Correct Answer: C
Rationale: Preterm infants’ T4 normalizes by 6 weeks (C) with maturation.
Question 2 of 5
Endemic cretinism is the most serious consequence of iodine deficiency; it includes two different but overlapping syndromes: a neurologic type and a myxedematous type. The neurologic syndrome is characterized by the following EXCEPT
Correct Answer: D
Rationale: Delayed puberty (E) is more typical of myxedematous cretinism, not the neurologic type.
Question 3 of 5
There is a spectrum of parathyroid deficiencies with clinical manifestations varying from no symptoms to those of complete and longstanding deficiency. Early manifestations include
Correct Answer: A
Rationale: Tingling (A) is an early sign of hypocalcemia from parathyroid deficiency.
Question 4 of 5
All the following are causes of infantile hypercalcemia EXCEPT
Correct Answer: C
Rationale: Lactase/disaccharidase deficiency (C) does not cause hypercalcemia; others (A, B, D, E) are known causes.
Question 5 of 5
The MOST definitive test for adrenal insufficiency is measurement of
Correct Answer: B
Rationale: ACTH stimulation test (B) measuring cortisol response is the gold standard for diagnosing adrenal insufficiency.