Nokea
The nurse is providing genetic counseling for an expectant couple who already have a child with trisomy 18. The nurse should:
- A. Tell the couple they need to have an abortion within 2 to 3 weeks.
- B. Explain that the fetus has a 50% chance of having the disorder.
- C. Discuss options with the couple, including amniocentesis to determine whether the fetus is affected.
- D. Refer the couple to a psychologist for emotional support.
Correct Answer: C
Rationale: Genetic testing, including amniocentesis, would need to be performed to determine whether the fetus is affected.
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A woman who is 8 months pregnant asks the nurse, 'Does my baby have any antibodies to fight infection?' The most appropriate response by the nurse is:
- A. Your baby has all the immune globulins necessary: IgG, IgM, and IgA.
- B. Your baby won't receive any antibodies until he/she is born and you breastfeed him.
- C. Your baby does not have any antibodies to fight infection.
- D. Your baby has IgG and IgM.
Correct Answer: D
Rationale: During the third trimester, the fetus has IgG and IgM. Breastfeeding supplies the baby with IgA.
What occurs in the intervillous space in the developing placenta?
- A. None
- B. Oxygen and nutrients perfuse across the chorion villi to enter fetal circulation.
- C. None
- D. None
Correct Answer: B
Rationale: This is the primary function of the intervillous space.
The nurse works in an infertility clinic and is interviewing a male patient whose partner has been unable to conceive. Which finding obtained during a health history will cause the nurse greatest concern?
- A. The patient is a passionate gardener.
- B. The patient had a vasectomy reversed.
- C. The patient rides a bicycle daily to work.
- D. The patient is concerned about infertility.
Correct Answer: B
Rationale: A vasectomy reversal can lead to the development of antibodies that reduce sperm motility, impacting fertility.
The nurse explains to the patient at 28 weeks’ gestation not to lie flat on their back during the remainder of the pregnancy. What does this precaution prevent?
- A. acid reflux
- B. headaches
- C. pregnancy-induced hypertension
- D. vena cava syndrome
Correct Answer: D
Rationale: Lying flat can compress the vena cava, leading to reduced blood flow. Other options are unrelated.
Fetal circulation includes 3 shunts. Match each shunt to its physiologic action. Ductus arteriosus
- A. Connects the pulmonary artery and the aorta, bypassing the lungs.
- B. Connects the right and left atria.
- C. Connects the right and left ventricles.
- D. Allows the umbilical vein to bypass the liver to flow into the inferior vena cava.
Correct Answer: A
Rationale: Ductus arteriosus connects the pulmonary artery and aorta.