Upon receiving report on a 36-week G1P0 patient, the nurse has been informed that the pregnancy is at high risk because the umbilical cords may become entangled. Which does the nurse understand about this pregnancy?

Correct Answer: B

Rationale: The correct answer is B: It is a monoamnionic, monochorionic twin gestation. In this type of pregnancy, twins share the same amniotic sac (monoamnionic) and placenta (monochorionic). This situation increases the risk of cord entanglement, leading to potential complications. The other choices are incorrect because they do not describe a pregnancy with the same level of risk for cord entanglement. Choice A, diamnionic, monochorionic, implies two amniotic sacs, reducing the risk of cord entanglement. Choice C, monoamnionic, dichorionic, describes a less risky scenario with two separate placentas. Choice D, diamnionic, dichorionic, indicates two separate sacs and placentas, also reducing the risk of cord entanglement.

Correct Answer: B

Rationale: The correct answer is B because the yolk sac in early pregnancy produces blood cells for the fetus. This is essential for the fetus's development as it helps in the formation of the circulatory system. The other choices are incorrect because: A: Providing antibodies to the developing fetus is typically done by the placenta, not the yolk sac. C: Hormones needed to support the pregnancy are mainly secreted by the placenta and other maternal structures, not the yolk sac. D: The yolk sac does not become the placenta; they are two distinct structures with different functions.

Correct Answer: D

Rationale: The correct answer is D (24 weeks) because alveoli formation and fetal breathing movements are typically observed during the late second trimester, around 24 weeks. At this stage, the lungs have developed sufficiently to support breathing outside the womb. Choices A (12 weeks), B (6 weeks), and C (20 weeks) are incorrect because alveoli formation and breathing movements do not occur as early as these time points in the pregnancy. Fetal breathing movements are a crucial sign of lung maturation and readiness for extrauterine life, which is why the correct answer is 24 weeks.

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.