Maternity HESI 2023 Quizlet Related

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The parents of a 3-year-old boy with Duchenne muscular dystrophy (DMD) ask, 'How can our son have this disease? We are wondering if we should have any more children.' What information should the nurse provide these parents?

  • 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 lack of the protein dystrophin in the mother can impact the XXX muscle groups of males.
  • D. Spinal cord damage due to birth trauma during a breech vaginal birth weakens the muscles.
Correct Answer: A

Rationale: The correct answer is A. Duchenne muscular dystrophy is an X-linked recessive disorder, meaning the gene mutation causing DMD is located on the X chromosome. Males have one X chromosome and one Y chromosome, so if the X chromosome they inherit from their mother carries the mutated gene, they will develop DMD. Females have two X chromosomes, so they are carriers of the gene but are usually not affected by the disease. Therefore, the nurse should explain to the parents that DMD is an inherited X-linked recessive disorder that primarily affects male children in the family.