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.

Answer and Explanation

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.

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Correct Answer is C

Explanation

The correct answer is choice C. Assist the client to breathe into a paper bag.

Choice A rationale:

Instructing the client to maintain a breathing rate no less than twice the normal rate is not appropriate. This could exacerbate hyperventilation, leading to further lightheadedness and tingling.

Choice B rationale:

Administering oxygen via nasal cannula is not necessary in this situation. The symptoms are due to hyperventilation, not a lack of oxygen.

Choice C rationale:

Assisting the client to breathe into a paper bag helps to rebreathe carbon dioxide, which can correct the respiratory alkalosis caused by hyperventilation. This will alleviate the symptoms of lightheadedness and tingling.

Choice D rationale:

Having the client tuck her chin to her chest is not a recognized intervention for hyperventilation. It would not address the underlying issue of respiratory alkalosis.

A. Maternal hypertension. B. Maternal cocaine use. C. Maternal cigarette smoking. D. Maternal battering.

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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A nurse is caring for a newborn. How many blood vessels should the nurse expect to observe in the newborn's umbilical cord?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is assisting with the care of a client who is using pattern-paced breathing during the first stage of labor. The client says she feels lightheaded, and her fingers are tingling. Which of the following actions should the nurse take?

Correct Answer is C

Explanation

A nurse is reinforcing teaching with a client who is at 34 weeks of gestation and at risk for placental abruption. Does the nurse recognize that which of the following is the most common risk factor for a placental abruption?

Correct Answer is A

Explanation

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