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 C rationale:
This response is correct because black stools are a common side effect of taking iron supplements. Iron can cause the stool to appear black or
tarry due to the way it is broken down during digestion. It does not necessarily indicate a serious issue, especially if the client is not experiencing any abdominal pain or cramping. Educating the client about this expected side effect helps alleviate any concerns they might have about the change in stool colour.
Choice A rationale:
"Go to the emergency room and your provider will meet you there.”. This response is not appropriate in this situation. The client's report of black stools without abdominal pain or cramping is likely due to the iron supplements and does not warrant a visit to the emergency room. This response may cause unnecessary panic and anxiety for the client.
Choice B rationale:
"What else have you been eating?.”. This response is also not the best choice. While it's essential for healthcare providers to gather comprehensive information about a client's diet and lifestyle, in this case, the client's black stools can be directly attributed to the iron supplements. Focusing on other dietary factors might distract from addressing the client's concern about the side effect of iron supplementation.
Choice D rationale:
"Come to the office, and we will check things out.”. This response is not the most appropriate one either. A visit to the office might not be necessary solely based on the client's report of black stools without accompanying pain or cramping. This situation can be managed through education, and the client can be reassured that it is a typical side effect of iron supplements. An unnecessary visit to the office could inconvenience the client and waste both their time and the healthcare provider's time.
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.
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