A nurse is caring for a newborn. How many blood vessels should the nurse expect to observe in the newborn's umbilical cord?
Two arteries and two veins.
One artery and one vein.
Two arteries and one vein.
Two veins and one artery.
The Correct Answer is C
Choice A rationale:
The umbilical cord typically contains two arteries and one vein. Arteries carry oxygen-depleted blood and waste products from the fetus to the placenta for removal, while the vein carries oxygenated blood and nutrients from the placenta to the fetus. This arrangement is essential for maintaining proper fetal circulation during pregnancy.
Choice B rationale:
This choice is incorrect because the umbilical cord usually contains two arteries and one vein, not just one artery and one vein. Having only one artery could indicate a potential vascular abnormality or congenital issue that may require further investigation or medical attention.
Choice C rationale:
This is the correct answer. The umbilical cord usually contains two arteries and one vein. The presence of two arteries allows for the efficient removal of waste products and carbon dioxide from the fetus, while the single vein delivers essential nutrients and oxygen to support the baby's growth and development.
Choice D rationale:
This choice is incorrect as it states two veins and one artery, which is not the typical configuration of blood vessels in the umbilical cord. Having two veins and one artery would disrupt fetal circulation and hinder proper nutrient and waste exchange between the fetus and the placenta.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Abdominal pain with minimal red vaginal bleeding may not be as concerning as other options. While it could be a sign of placenta previa, it is not as specific or significant as the finding in Choice B.
Choice B rationale:
A large amount of bright red vaginal bleeding without pain is a significant finding that is highly suggestive of placenta previa. Placenta previa occurs when the placenta partially or completely covers the cervix, and vaginal bleeding is a common symptom. The bright red colour indicates active bleeding, and the absence of pain is noteworthy as placenta previa bleeding is typically painless.
Choice C rationale:
Severe abdominal pain with increasing fundal height is not a typical sign of placenta previa. While abdominal pain can be associated with various pregnancy complications, it is not a specific finding for this condition.
Choice D rationale:
Intermittent abdominal pain following the passage of bloody mucus could be related to other issues, such as preterm labor or cervical changes. While bleeding may be present in placenta previa, the pain and passage of mucus are not characteristic features of this condition.
Correct Answer is B
Explanation
The correct answer is choice B. Assure the client that the score is within the expected range.
Choice A rationale:
Administering oxygen and notifying the provider is not necessary for a biophysical profile (BPP) score of 10. A score of 10 indicates that the fetus is well-oxygenated and there are no signs of distress.
Choice B rationale:
A BPP score of 10 is considered normal and reassuring, indicating that the fetus is well-oxygenated and there are no signs of distress. Therefore, the nurse should assure the client that the score is within the expected range.
Choice C rationale:
Offering the client orange juice and repeating the assessment in 1 hour is not necessary for a BPP score of 10. This action might be considered if the score were lower and there was a need to reassess fetal well-being.
Choice D rationale:
Assisting the client into a side-lying position is not required for a BPP score of 10. This position is typically recommended to improve uteroplacental blood flow in cases of fetal distress or lower BPP scores.
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