ATI RN
Pediatric Musculoskeletal Assessment Questions
Question 1 of 5
Measuring serum concentrations of renin and aldosterone differentiates children with metabolic alkalosis; both renin and aldosterone are elevated in
Correct Answer: A
Rationale: Renovascular disease increases renin and aldosterone due to reduced renal perfusion.
Question 2 of 5
Becker muscular dystrophy (BMD) is a disease that is fundamentally similar to Duchenne muscular dystrophy (DMD). Of the following, the MOST recognized feature of BMD is
Correct Answer: B
Rationale: BMD is distinguished from DMD by longer ambulation time, often into adolescence or adulthood, due to milder dystrophin dysfunction.
Question 3 of 5
All the following myopathies are characterized by proximal muscle wasting EXCEPT
Correct Answer: D
Rationale: Central core myopathy typically presents with mild weakness and hypotonia rather than significant proximal muscle wasting, unlike the muscular dystrophies listed.
Question 4 of 5
The MOST definitive diagnostic test in Werdnig-Hoffmann disease is
Correct Answer: D
Rationale: Molecular genetic testing for SMN1 gene deletion is the definitive diagnostic test for Werdnig-Hoffmann disease (SMA type 1).
Question 5 of 5
In Guillain-Barré syndrome, the onset is gradual and progresses over days or weeks. The maximal severity of weakness is usually reached by
Correct Answer: B
Rationale: In GBS, maximal weakness typically peaks by 4 weeks, per diagnostic criteria, though it varies.