Nokea
The ___ is/are responsible for oxygen and carbon dioxide transport to and from the maternal bloodstream.
- A. Decidua basalis.
- B. Blastocyst.
- C. Germ layer.
- D. Chorionic villi.
Correct Answer: D
Rationale: Chorionic villi obtain oxygen and nutrients from the maternal bloodstream and dispose of carbon dioxide and waste products into the maternal blood.
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A man's wife is pregnant for the third time. One child was born with cystic fibrosis, and the other child is healthy. The man wonders what the chance is that this child will have cystic fibrosis. This type of testing is known as:
- A. Occurrence risk.
- B. Recurrence risk.
- C. Predictive testing.
- D. Predisposition testing.
Correct Answer: B
Rationale: The couple already has a child with a genetic disease so they will be given a recurrence risk test.
The nurse is providing care to a pregnant person at 34 weeks’ gestation who is experiencing heartburn. The pregnant person asks why they are experiencing heartburn so often. What is the appropriate nurse’s response to the pregnant person’s question?
- A. Heartburn is common during pregnancy because of the increase in food cravings.
- B. Heartburn increases during pregnancy because of the increase in salivation.
- C. Heartburn occurs because the cardiac sphincter relaxes, allowing stomach acid to come up into the esophagus.
- D. The increase in a pregnant person’s metabolism causes an increase in stomach acid and heartburn.
Correct Answer: C
Rationale: Heartburn occurs because the cardiac sphincter relaxes, allowing acid reflux. Other options are incorrect causes.
Many parents-to-be have questions about multiple births. Maternity nurses should be able to tell them that:
- A. Twinning and other multiple births are increasing because of the use of fertility drugs and delayed childbearing.
- B. Dizygotic twins (two fertilized ova) have the potential to be conjoined twins.
- C. Fraternal twins are same gender, usually male.
- D. Identical twins are more common in white families.
Correct Answer: A
Rationale: Twinning and other multiple births are increasing due to fertility drugs and delayed childbearing.
The placenta allows exchange of oxygen, nutrients, and waste products between the mother and fetus by:
- A. Contact between maternal blood and fetal capillaries within the chorionic villi.
- B. Interaction of maternal and fetal pH levels within the endometrial vessels.
- C. A mixture of maternal and fetal blood within the intervillous spaces.
- D. Passive diffusion of maternal carbon dioxide and oxygen into the fetal capillaries.
Correct Answer: A
Rationale: Fetal capillaries within the chorionic villi are bathed with oxygen-rich and nutrient-rich maternal blood within the intervillous spaces.
A 36-year-old G2P0 patient has been told that she has hydramnios. She asks what might have caused this and if it will cause complications. What is the nurse’s correct response?
- A. It is a decrease in the amount of amniotic fluid that occurs as a result of a neural tube defect.
- B. It is an increase in the amount of amniotic fluid, which can compress the baby’s cord.
- C. It is an increase in amniotic fluid that can occur as a result of having diabetes mellitus.
- D. It is a decrease in the amount of amniotic fluid that can cause preterm labor.
Correct Answer: C
Rationale: Hydramnios involves increased amniotic fluid, often linked to diabetes mellitus and may compress the umbilical cord.