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The nurse is educating a class of expectant parents about fetal development. What is considered fetal age of viability?
- A. 14 weeks
- B. 20 weeks
- C. 25 weeks
- D. 30 weeks
Correct Answer: B
Rationale: By 20 weeks of gestation, the lungs have matured enough for the fetus to survive outside the uterus (age of viability).
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A pregnant patient is at 24 weeks gestation and reports feeling faint and lightheaded. What should the nurse recommend?
- A. Lie down immediately and rest until symptoms subside.
- B. Take deep breaths and drink a cold beverage to feel better.
- C. Get up slowly and take small sips of water throughout the day.
- D. Sit upright and monitor the symptoms for several hours.
Correct Answer: C
Rationale: The correct answer is C because getting up slowly and taking small sips of water throughout the day helps maintain blood pressure and hydration, which can improve symptoms of feeling faint and lightheaded during pregnancy. Lying down immediately (choice A) may not address the underlying issue of potential low blood pressure. Taking deep breaths and drinking a cold beverage (choice B) may not address the need for increased fluid intake and gradual position changes. Sitting upright and monitoring symptoms (choice D) may not actively address the immediate need for hydration and blood pressure management.
The nurse is educating a class of expectant parents about fetal development. What is considered fetal age of viability?
- A. 14 weeks
- B. 20 weeks
- C. 25 weeks
- D. 30 weeks
Correct Answer: B
Rationale: By 20 weeks of gestation, the lungs have matured enough for the fetus to survive outside the uterus (age of viability).
Which clinical conditions are associated with increased levels of alpha-fetoprotein (AFP)? (Select all that apply.)
- A. Down syndrome
- B. Molar pregnancy
- C. Twin gestation
- D. Incorrect gestational age assessment of a normal fetus—estimation is earlier in the pregnancy
Correct Answer: C
Rationale: Elevated AFP levels are seen in multiple gestations, miscalculated gestational age, and threatened abortion.
A patient who is 40 weeks pregnant presents to the labor and delivery unit with decreased fetal movement. What is the first step in management?
- A. Perform a nonstress test (NST)
- B. Administer a corticosteroid injection
- C. Monitor fetal heart rate
- D. Monitor the fetal heart rate
Correct Answer: A
Rationale: The correct answer is A: Perform a nonstress test (NST). This is the first step in assessing fetal well-being when a patient presents with decreased fetal movement at 40 weeks gestation. The NST evaluates fetal heart rate in response to fetal movement, providing immediate information on fetal well-being. Administering a corticosteroid injection (B) would not be indicated at this point as it is not the first-line management for decreased fetal movement. Monitoring fetal heart rate (C and D) is important, but the NST provides more comprehensive information on fetal well-being.
A nurse is teaching a lesson on fetal development to a class of high school students and explains the primary germ layers. What are the germ layers? (Select all that apply.)
- A. Ectoderm
- B. Endoderm
- C. Mesoderm
- D. Plastoderm
Correct Answer: A
Rationale: The zygote transforms its embryonic disc into three layers: the ectoderm, the mesoderm, and the endoderm. These layers are responsible for the development of various tissues and organs in the body. Plastoderm and Blastoderm are not part of the primary germ layers.