ATI RN
Pediatric Musculoskeletal Disorders Quizlet Questions
Question 1 of 5
An 8-year-old child with mild, intermittent right hip pain and a limp undergoes radiography of the hip (Fig. 31-2). What is the diagnosis?
Correct Answer: B
Rationale: Legg-Calvé-Perthes disease typically affects children aged 4-10 with hip pain and limp due to avascular necrosis of the femoral head.
Question 2 of 5
Which is the diagnosis of the patient pictured in Figure 31-3?
Correct Answer: B
Rationale: Osteogenesis imperfecta type I is common and milder, likely depicted in Figure 31-3 with features like blue sclerae or fractures.
Question 3 of 5
The ratio of the intracellular fluid volume to the extracellular fluid volume approaches adult levels at the age of
Correct Answer: A
Rationale: In newborns, extracellular fluid (ECF) is higher than intracellular fluid (ICF). By 1 year of age, the ICF:ECF ratio approaches adult levels (approximately 2:1) due to a decrease in ECF proportion.
Question 4 of 5
Hypervolemic hyponatremia is caused by
Correct Answer: A
Rationale: Cirrhosis causes hypervolemic hyponatremia due to fluid retention and dilution of serum sodium from portal hypertension and impaired water excretion.
Question 5 of 5
Spurious hyperkalemia or pseudohyperkalemia in children is usually exaggerated by
Correct Answer: C
Rationale: Thrombocytosis causes pseudohyperkalemia by releasing potassium from platelets during clotting in vitro, not reflecting true serum levels.