ATI RN
NCLEX Pediatric Musculoskeletal Questions Questions
Question 1 of 5
The characteristic features of Duchenne muscular dystrophy (DMD) are progressive weakness, intellectual impairment, hypertrophy of the calves, and proliferation of connective tissue in muscle. Of the following, the BEST initial test for diagnosis is
Correct Answer: D
Rationale: Serum creatine kinase (CK) is the best initial test for DMD due to its significant elevation (10-100 times normal) early in the disease, reflecting muscle damage.
Question 2 of 5
The best diagnostic test in Guillain-Barré syndrome (GBS) is
Correct Answer: A
Rationale: CSF study showing albuminocytologic dissociation (high protein, normal cell count) is the best diagnostic test for GBS.
Question 3 of 5
The earliest and MOST constant sign of myasthenia gravis is
Correct Answer: A
Rationale: Ptosis is the earliest and most constant sign of myasthenia gravis, reflecting ocular muscle involvement.
Question 4 of 5
The percent intestinal absorption of the small amount of iron in human milk is
Correct Answer: A
Rationale: The text specifies that 10% of iron in human milk is absorbed, directly supporting A.
Question 5 of 5
Which of the following findings is considered abnormal on urinalysis of a patient with dehydration?
Correct Answer: B
Rationale: Granular casts indicate tubular damage, abnormal in simple dehydration, whereas hyaline casts can be normal in concentrated urine.