ATI RN
Pediatric Musculoskeletal Disorders Questions
Question 1 of 5
Spurious hypokalemia occurs in patients with
Correct Answer: B
Rationale: High white blood cell counts (e.g., leukemia) cause spurious hypokalemia as cells take up potassium in vitro after blood draw.
Question 2 of 5
The MOST important indication of mechanical ventilation in respiratory acidosis is
Correct Answer: D
Rationale: A tiring patient indicates respiratory muscle fatigue, necessitating ventilation to prevent failure.
Question 3 of 5
Duchenne muscular dystrophy (DMD) is the most common hereditary neuromuscular disease affecting all races and ethnic groups. All the following are features of DMD EXCEPT
Correct Answer: C
Rationale: Fasciculation is not a feature of DMD, which is characterized by progressive muscle weakness, scoliosis, contractures, cardiomyopathy, and intellectual impairment. Fasciculations are more typical of neurogenic conditions like ALS.
Question 4 of 5
In periodic paralysis, all the following are precipitating factors EXCEPT
Correct Answer: A
Rationale: A heavy fat meal is not a recognized trigger for periodic paralysis; the others (e.g., licorice via hypokalemia) can precipitate attacks.
Question 5 of 5
Guillain Barré syndrome is an autoimmune disorder often considered a postinfectious polyneuropathy involving mainly motor but also sensory and sometimes autonomic nerves. All the following are required in diagnosis EXCEPT
Correct Answer: B
Rationale: Muscle biopsy is not required for GBS diagnosis; CSF (elevated protein), EMG, and nerve studies are more relevant.