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 C
Explanation
Choice A rationale :
Scrambled eggs. Taking ferrous sulfate with scrambled eggs is not the optimal choice because eggs contain phytates, which can bind to iron and reduce its absorption. Therefore, it may hinder the effectiveness of the iron supplement, and the client may not receive the full benefit of the medication.
Choice B rationale
A high-fibre meal. While fiber is generally beneficial for digestion and overall health, it is not the best choice to take with ferrous sulfate. Fiber can also interfere with iron absorption in the same way as phytates, potentially reducing the medication's effectiveness.
Choice C rationale
Orange juice. The nurse should instruct the client to take the ferrous sulfate with orange juice. Orange juice is an excellent choice because it is rich in vitamin C. Vitamin C enhances the absorption of non-heme iron (the type of iron found in plant-based sources like ferrous sulfate). By taking the medication with orange juice, the client can maximize the absorption of iron and improve the treatment of iron-deficiency anaemia.
Choice D rationale
Milk. Consuming ferrous sulfate with milk is not advisable. Calcium, present in milk, can inhibit the absorption of iron. Therefore, taking the medication with milk might reduce the efficacy of the iron supplement and not provide the desired therapeutic effect.
Correct Answer is C
Explanation
The correct answer is choice c. Dry the newborn.
Choice A rationale:
Confirming identification and applying a bracelet is important for ensuring the newborn’s identity and preventing mix-ups, but it is not the immediate priority right after birth.
Choice B rationale:
Examining the newborn for birth defects is crucial for identifying any immediate health concerns, but it should be done after initial stabilization measures like drying and warming the newborn.
Choice C rationale:
Drying the newborn is the first action the nurse should take immediately after delivery. This helps to prevent heat loss and maintain the newborn’s body temperature, which is critical for their survival and well-being.
Choice D rationale:
Conducting a gestational age assessment is important for determining the newborn’s maturity and potential health risks, but it is not the immediate priority right after birth.
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