ATI RN
Pediatric Endocrine System Questions
Question 1 of 5
During a routine physical examination, a solitary thyroid nodule is palpated in asymptomatic 10-year-old child. Of the following, the MOST likely cause is
Correct Answer: B
Rationale: In children, a solitary thyroid nodule is most often a benign adenoma (B); carcinoma (A) is rarer.
Question 2 of 5
Precocious puberty in girls is defined by the onset of secondary sexual characteristics before the age of
Correct Answer: B
Rationale: Precocious puberty in girls is defined as onset before age 8 (B), per endocrine guidelines.
Question 3 of 5
The thyroid hormones are transported in plasma bound to thyroxine-binding globulin (TBG), a glycoprotein synthesized in the liver. TBG binds approximately 70% of T4 and 50% of T3. TBG level increase with administration of
Correct Answer: A
Rationale: Estrogens (A) increase TBG levels, raising bound thyroid hormone.
Question 4 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 5 of 5
Chronic lymphocytic thyroiditis is the most common cause of acquired hypothyroidism, with or without goiter. All the following are true EXCEPT
Correct Answer: D
Rationale: The clinical course of chronic lymphocytic thyroiditis (Hashimoto’s) varies (not constant, D), with remission and progression possible.