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 ["A","C","D"]
Explanation
Choice A rationale:
The nurse should report the blood pressure findings to the provider because there is a significant increase in both systolic and diastolic blood pressure. At 0900, the blood pressure was 156/90 mm Hg, and at 1000, it increased to 160/96 mm Hg. This significant elevation in blood pressure can be a cause for concern as it may indicate the development of gestational hypertension or preeclampsia, which can be dangerous for both the client and the fetus.
Choice B rationale:
Cerebral manifestations are not mentioned in the nurse's notes or vital signs and are not relevant to the given scenario. Therefore, this choice is not applicable in this case.
Choice C rationale:
The nurse should report the fetal heart rate findings to the provider because it is not included in the vital signs section of the nurse's notes. Monitoring the fetal heart rate is essential to ensure the well-being of the fetus, and any abnormalities or changes in the fetal heart rate should be promptly reported to the healthcare provider for further evaluation.
Choice D rationale:
The nurse should report the respiratory rate findings to the provider. Although the respiratory rate seems to be within the normal range (22/min at 0900 and 21/min at 1000), it is a vital sign that should be closely monitored in pregnant clients. Any sudden changes or abnormalities in the respiratory rate may indicate respiratory distress or other health issues that need medical attention. Choices E and F rationale: Deep tendon reflexes and gastrointestinal assessment findings are not mentioned in the nurse's notes or vital signs. These options are not applicable in this scenario and do not require reporting to the provider.
Correct Answer is A
Explanation

The correct answer is choice A, Maternal hypertension.
Choice A rationale:
Maternal hypertension is widely recognized as the most common risk factor for placental abruption. High blood pressure can cause the placenta to detach from the uterine wall, leading to abruption. In summary, while all the listed factors can contribute to the risk of placental abruption, maternal hypertension stands out as the most common cause, supported by multiple health sources. It’s important for nurses to recognize and manage hypertension in pregnant clients to minimize the risk of this serious complication.
Choice B rationale:
While maternal cocaine use is a significant risk factor for placental abruption due to its vasoconstrictive effects, which can compromise the placental blood flow, it is not as common as maternal hypertension.
Choice C rationale:
Maternal cigarette smoking is also a risk factor for placental abruption. Smoking can lead to a variety of complications in pregnancy, including placental problems, but again, it is less common than hypertension as a cause for abruption.
Choice D rationale:
Maternal battering can lead to trauma which may result in placental abruption. However, it is not considered the most common risk factor when compared to maternal hypertension.
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