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 D
Explanation
Choice A rationale:
Helping the client to the bathroom to empty her bladder is not the appropriate response in this situation. The client's sudden urge to push indicates that she is in the second stage of labor, which is the pushing phase. The cervix is already dilated at 7 cm, and the fetus is at 1+ station, indicating that delivery is imminent. Emptying the bladder at this point is not a priority and may delay necessary actions.
Choice B rationale:
Assisting the client into a comfortable position is also not the appropriate response. The client's urge to push suggests that she is in the active stage of labor, and her cervix is already 7 cm dilated. Encouraging a comfortable position might not be suitable since the focus should be on monitoring the progress of labor and preparing for delivery.
Choice C rationale:
Having the client pant during the next few contractions is not the correct response either. Panting is typically recommended during the transition phase of labor to prevent rapid pushing and potential damage to the perineum. However, in this scenario, the client is already fully dilated, and the fetus is at 1+ station, indicating that the second stage of labor has commenced. Panting is not necessary at this point.
Choice D rationale:
The appropriate nursing response is to assess the perineum for signs of crowning. The sudden urge to push indicates that the baby is descending through the birth canal and may be close to crowning, which is when the baby's head becomes visible at the vaginal opening. By assessing for crowning, the nurse can determine if delivery is imminent and notify the healthcare provider for further actions and preparation for the baby's birth.
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.
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