ATI RN
Pediatric Musculoskeletal Assessment Questions
Question 1 of 5
Total body water (TBW) as a percentage of body weight varies with age. Which of the following is true regarding TBW?
Correct Answer: B
Rationale: Premature infants have higher TBW (up to 80-85%) compared to term infants (70-75%), which aligns with physiological norms and is supported indirectly by the text.
Question 2 of 5
Classification of true hyponatremia is based on the patient's
Correct Answer: B
Rationale: True hyponatremia is classified by volume status (hypovolemic, euvolemic, hypervolemic), a fundamental diagnostic approach.
Question 3 of 5
Which of the following is a cause of metabolic acidosis with normal anion gap?
Correct Answer: B
Rationale: Diarrhea causes normal anion gap metabolic acidosis due to bicarbonate loss, unlike the others with elevated gaps.
Question 4 of 5
Most hemangiomas do not necessitate medical intervention and involute spontaneously; however, if complications arise and treatment is warranted, oral propranolol is the mainstay of therapy.
Correct Answer: A
Rationale: Hemangiomas are benign vascular tumors that often resolve without intervention. When treatment is needed due to complications like ulceration or obstruction, oral propranolol is the first-line therapy due to its efficacy in reducing proliferation.
Question 5 of 5
Brown nits located on the proximal hair shaft suggest active infestation. White nits located on the hair shaft 4 \mathrm{~cm} or farther from the scalp indicate previous infestation. Because nonviable nits can remain stuck in the hair for weeks to months after an infestation has resolved, many children with nits do not have active lice infestation.
Correct Answer: D
Rationale: Brown nits near the scalp indicate active lice laying eggs, while white nits farther out suggest a past, resolved infestation.