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What organ does the ductus venosus shunt blood away from in fetal circulation?
- A. Liver
- B. Heart
- C. Lungs
- D. Kidneys
Correct Answer: A
Rationale: Fetal blood bypasses the liver through the ductus venosus by carrying blood directly to the inferior vena cava.
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The following four changes occur during pregnancy. Which of them usually increases the father’s interest and involvement in the pregnancy?
- A. Learning the results of the pregnancy test.
- B. Attending childbirth education classes.
- C. Hearing the fetal heartbeat.
- D. Meeting the obstetrician or midwife.
Correct Answer: C
Rationale: Hearing the fetal heartbeat is a significant moment that often increases the father’s interest and involvement in the pregnancy. The other options may also increase involvement but are less impactful.
A 34-week gestation woman calls the obstetric office stating, 'Since last night I have had three nosebleeds.'
- A. You should see the doctor to make sure you are not becoming severely anemic.
- B. Do you have a temperature?
- C. One of the hormones of pregnancy makes the nasal passages prone to bleeds.
- D. Do you use any inhaled drugs?
Correct Answer: C
Rationale: Pregnancy hormones increase blood supply to mucous membranes, making them more prone to bleeding. Nosebleeds are generally harmless unless associated with other symptoms.
Which factors should be considered a contraindication for transcervical chorionic villus sampling?
- A. Rh-negative mother
- B. Gestation less than 15 weeks
- C. Maternal age younger than 35 years
- D. Positive for group B Streptococcus
Correct Answer: D
Rationale: Maternal infection, such as group B Streptococcus, is a contraindication for the procedure due to the risk of infection.
Which of the following exercises should be taught to a pregnant woman who complains of backaches?
- A. Kegeling.
- B. Pelvic tilting.
- C. Leg lifting.
- D. Crunching.
Correct Answer: B
Rationale: Pelvic tilting exercises help to alleviate backaches by strengthening the abdominal and lower back muscles. Kegeling, leg lifting, and crunching are not specifically targeted at relieving backaches.
A pregnant woman states, “My husband hopes I will give him a boy because we have three girls.” What will the nurse explain to this woman?
- A. The sex chromosome of the fertilized ovum determines the gender of the child.
- B. When the sperm and ovum are united, there is a 75% chance the child will be a girl.
- C. When the pH of the female reproductive tract is acidic, the child will be a girl.
- D. If a sperm carrying a Y chromosome fertilizes an ovum, then a boy is produced.
Correct Answer: D
Rationale: When a Y-bearing sperm fertilizes an ovum, a male child is produced.