Nokea
The most basic information a maternity nurse should have concerning conception is that:
- A. Ova are considered fertile 48 to 72 hours after ovulation.
- B. Sperm remain viable in the woman's reproductive system for an average of 12 to 24 hours.
- C. Conception is achieved when a sperm successfully penetrates the membrane surrounding the ovum.
- D. Implantation in the endometrium occurs 6 to 10 days after conception.
Correct Answer: D
Rationale: After implantation, the endometrium is called the decidua.
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A patient at 34 weeks gestation is undergoing an ultrasound. The nurse notes that the amniotic fluid is estimated at between 500 and 600 mL. Which deduction does the nurse make from this finding?
- A. Oligohydramnios is present.
- B. Fluid is normal for gestation age.
- C. Polyhydramnios has formed.
- D. Follow-up ultrasound is warranted.
Correct Answer: A
Rationale: Oligohydramnios, or low amniotic fluid, is indicated by the reduced volume, requiring close monitoring.
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.
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 father and mother are carriers of phenylketonuria (PKU). Their 2-year-old daughter has PKU. The couple tells the nurse that they are planning to have a second baby. Because their daughter has PKU, they are sure that their next baby won't be affected. What response by the nurse is most accurate?
- A. Good planning; you need to take advantage of the odds in your favor.
- B. I think you'd better check with your doctor first.
- C. You are both carriers, so each baby has a 25% chance of being affected.
- D. The ultrasound indicates a boy, and boys are not affected by PKU.
Correct Answer: C
Rationale: Each child produced by this couple has a 25% chance of being affected by PKU disorder.
Choose appropriate client teaching related to maternal serum alpha-fetoprotein (MSAFP) analysis.
- A. Abnormal MSAFP levels should be followed by more specific tests.
- B. High MSAFP levels are usually associated with chromosome abnormalities.
- C. Having MSAFP testing eliminates the need to perform an ultrasound examination.
- D. The initial MSAFP testing will be performed at 12 weeks of gestation.
Correct Answer: A
Rationale: Abnormal MSAFP levels require further investigation with more specific tests.