Maternal Newborn Nclex Practice Questions Related

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A nurse is doing genetic counseling with a couple. give to a client undergoing a mastectomy? The mother has Down syndrome and the father

  • A. Tylenol should be avoided after surgery. has no chromosomal abnormalities. What is the
  • B. The affected arm should remain in a sling for chance of their offspring being affected by this 4 weeks. disorder?
  • C. The client should expect the affected arm to be
  • D. 25%
Correct Answer: D

Rationale: When a woman with Down syndrome (trisomy 21) has a child with a man who does not have any chromosomal abnormalities, the chance of their offspring having Down syndrome is 25%. This is because the mother can only pass on one copy of the extra chromosome 21 to her child, resulting in a 50% chance of passing it on. However, since the father does not have an extra chromosome 21 to contribute, the overall chance of the child having Down syndrome is reduced to 25%.