Maternity Nursing Q 135

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The nurse in-charge is reviewing a patient’s prenatal history. Which finding indicates a genetic risk factor?

  

     A. The patient is 25 years old.

     B. The patient has a child with cystic fibrosis.

     C. The patient was exposed to rubella at 36 weeks’ gestation.

     D. The patient has a history of preterm labor at 32 weeks’ gestation.

    

    

Correct Answer: B. The patient has a child with cystic fibrosis

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Cystic fibrosis is a recessive trait; each offspring has a one in four chance of having the trait or the disorder.

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Option A: Maternal age is not a risk factor until age 35, when the incidence of chromosomal defects increases.

Option C: Maternal exposure to rubella during the first trimester may cause congenital defects.

Option D: Although a history or preterm labor may place the patient at risk for preterm labor, it does not correlate with genetic defects.

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