Nokea
The glucose challenge screening test is performed at or after 24 weeks’ gestation to assess for the maternal physiological response to which of the following pregnancy hormones?
- A. Estrogen.
- B. Progesterone.
- C. Human placental lactogen.
- D. Human chorionic gonadotropin.
Correct Answer: C
Rationale: Human placental lactogen (hPL) is the hormone that affects glucose metabolism during pregnancy, making it the focus of the glucose challenge test.
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A 32-week pregnant woman is admitted to the labor and delivery unit with contractions every 5 minutes. What is the most appropriate intervention?
- A. Administer magnesium sulfate to stop the contractions
- B. Start an IV and monitor the fetal heart rate
- C. Perform a cesarean section immediately
- D. Encourage the patient to push to deliver the baby
Correct Answer: B
Rationale: The correct answer is B: Start an IV and monitor the fetal heart rate. This is the most appropriate intervention as it allows for assessment of fetal well-being and maternal status. IV access is crucial for potential interventions like administering medications or fluids. Monitoring fetal heart rate helps determine fetal distress. Administering magnesium sulfate (choice A) should be considered for preterm labor, not routine contractions. Performing a cesarean section immediately (choice C) is not indicated without proper evaluation. Encouraging the patient to push (choice D) is premature without assessing cervical dilation.
A woman who is 25 weeks pregnant asks the nurse what her fetus looks like. What does the nurse explain is one physical characteristic present in a 25-week-old fetus?
- A. Lanugo covering the body
- B. Constant motion
- C. Skin that is pink and smooth
- D. Eyes that are closed
Correct Answer: A
Rationale: By 25 weeks, the body of the fetus is covered with lanugo, the eyes are open, the skin is wrinkled, and the fetus has definite periods of movement and sleeping.
The nurse is reviewing fetal circulation with a pregnant patient and explains that blood circulates through the placenta to the fetus. What vessel(s) carry blood to the fetus?
- A. One umbilical vein
- B. Two umbilical veins
- C. One umbilical artery
- D. Two umbilical arteries
Correct Answer: A
Rationale: The umbilical vein transports richly oxygenated blood from the placenta to the fetus.
What does the nurse explain can affect the survival of the X- and Y-bearing sperm after intercourse?
- A. Age
- B. Estrogen level
- C. Body temperature
- D. Level of feminine hygiene
Correct Answer: B
Rationale: Estrogen levels and the pH of the female reproductive tract can affect the survival of the X- and Y-bearing sperm as well as their motility.
The component of development that programs the genetic code into the nucleus of the cell is ____________.
- A. DNA
- B. Plastoderm
- C. haploid
- D. Endoderm
Correct Answer: A
Rationale: DNA (deoxyribonucleic acid) contains the genetic instructions used in the development and functioning of all living organisms. It programs the genetic code into the nucleus of the cell for replication and expression.