Nokea
The nurse is providing education to a pregnant person at 10 weeks’ gestation who is experiencing nausea and vomiting. The nurse is aware the nausea and vomiting are due to which hormone produced by the placenta?
- A. relaxin
- B. human chorionic gonadotropin
- C. human placental lactogen
- D. luteinizing hormone
Correct Answer: B
Rationale: The correct answer is B: human chorionic gonadotropin (hCG). At 10 weeks' gestation, hCG is the hormone produced by the placenta responsible for nausea and vomiting, known as morning sickness. hCG levels peak around this time, coinciding with the onset of these symptoms. Relaxin (A), human placental lactogen (C), and luteinizing hormone (D) are not directly associated with causing nausea and vomiting in pregnancy.
You may also like to solve these questions
The upper uterus is the best place for the fertilized ovum to implant due to which anatomical adaptation?
- A. Maternal blood flow is lower.
- B. Placenta attaches most firmly.
- C. Uterine endometrium is softer.
- D. Developing baby is best nourishe
Correct Answer: D
Rationale: The correct answer is D because the upper uterus provides the developing baby with the best nourishment due to increased blood flow and nutrient supply. This area allows for optimal growth and development of the fetus. Maternal blood flow is higher in the upper uterus, not lower (A). While the placenta attaches firmly in the upper uterus, it is not the main reason for the implantation site (B). The uterine endometrium is softer in the lower uterus, not the upper, making choice C incorrect. In summary, the upper uterus is ideal for implantation due to increased nourishment for the developing baby, making choice D the correct answer.
A new mother asks the nurse about the 'white substance' covering her infant. The nurse explains that the purpose of vernix caseosa is to:
- A. Protect the fetal skin from amniotic fluid.
- B. Promote normal peripheral nervous system development.
- C. Allow transport of oxygen and nutrients across the amnion.
- D. Regulate fetal temperature.
Correct Answer: A
Rationale: Vernix caseosa protects the fetal skin from prolonged exposure to amniotic fluid.
Why might a provider recommend percutaneous umbilical blood sampling? Select all that apply.
- A. an increased risk of Down syndrome shown on a previous scan
- B. to detect Down syndrome in the fetus, as this test provides the most accurate screening
- C. to check for genetic and chromosomal abnormalities the fetus is at high risk for
- D. to verify the blood type of the fetus
Correct Answer: B
Rationale: Percutaneous umbilical blood sampling is recommended to detect Down syndrome accurately by analyzing fetal blood. This is because it directly tests the fetal blood for chromosomal abnormalities like Down syndrome, providing a definitive diagnosis. Other choices are incorrect because A does not specify the need for a direct blood test, C is too general, and D can be determined using other non-invasive methods like amniocentesis.
A nurse is conducting prenatal education classes for a group of expectant parents. Which information should the nurse include in her discussion of the purpose of amniotic fluid? (Select all that apply.)
- A. Cushions the fetus
- B. Protects the skin of the fetus
- C. Provides nourishment for the fetus
- D. Allows for buoyancy for fetal movement
Correct Answer: A
Rationale: The correct answer is A: Cushions the fetus. Amniotic fluid acts as a cushion that protects the fetus from physical trauma and provides a stable environment for fetal growth. It helps prevent compression injuries and maintains a constant temperature. The other choices are incorrect because: B) Protects the skin of the fetus: While amniotic fluid does provide some protection, its main purpose is cushioning. C) Provides nourishment for the fetus: The placenta is responsible for providing nourishment to the fetus, not amniotic fluid. D) Allows for buoyancy for fetal movement: While amniotic fluid does allow for buoyancy, its primary function is to cushion the fetus.
Sally comes in for her first prenatal examination. This is her first child. She asks you (the nurse), 'How does my baby get air inside my uterus?' The correct response is:
- A. The baby's lungs work in utero to exchange oxygen and carbon dioxide.
- B. The baby absorbs oxygen from your blood system.
- C. The placenta provides oxygen to the baby and excretes carbon dioxide into your bloodstream.
- D. The placenta delivers oxygen-rich blood through the umbilical artery to the baby's abdomen.
Correct Answer: C
Rationale: The placenta functions by supplying oxygen and excreting carbon dioxide to the maternal bloodstream.