ATI RN
Endocrine System in Pediatrics Questions
Question 1 of 5
The following stimulate vasopressin (VP) secretion EXCEPT
Correct Answer: D
Rationale: Hyperglycemia (D) does not directly stimulate VP; it causes osmotic diuresis. Others (A-C, E) are known triggers.
Question 2 of 5
The MOST common cause of permanent congenital hypothyroidism is
Correct Answer: B
Rationale: Thyroid dysgenesis (B) accounts for 80-85% of congenital hypothyroidism cases.
Question 3 of 5
The MOST common cause of acquired hypothyroidism is
Correct Answer: B
Rationale: Hashimoto thyroiditis (B) is the leading cause of acquired hypothyroidism in children.
Question 4 of 5
Thyroid peroxidase antibodies are absent in the following thyroiditis syndrome
Correct Answer: C
Rationale: Painful subacute thyroiditis (C) is typically viral, not autoimmune, so TPO antibodies are absent.
Question 5 of 5
Aplasia or hypoplasia of the parathyroid glands is often associated with the DiGeorge/velocardiofacial syndrome. All the following regarding this syndrome are true EXCEPT
Correct Answer: D
Rationale: Hypocalcemia in DiGeorge syndrome is usually neonatal and transient (C), not typically delayed (D).