HESI Practice Test Pediatrics Related

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What information should the nurse provide the parents of a 3-year-old boy with Duchenne muscular dystrophy (DMD) who are concerned about having more children?

  • A. This is an inherited X-linked recessive disorder, which primarily affects male children in the family.
  • B. The male infant had a viral infection that went unnoticed and untreated, leading to muscle damage.
  • C. The mother's lack of the protein dystrophin can impact the XXXX muscle groups in males.
  • D. Birth trauma during a breech vaginal birth can damage the spinal cord, resulting in muscle weakness.
Correct Answer: A

Rationale: The correct answer is A. Duchenne muscular dystrophy is an inherited X-linked recessive disorder that primarily affects male children in the family. Since it is X-linked, sons inherit the mutation from their mothers who are carriers of the abnormal gene. Therefore, the nurse should explain to the parents that any future sons they have would have a 50% chance of inheriting the mutation and having DMD, while daughters would have a 50% chance of being carriers like the mother.