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:
A fetal heart rate of 100/min for a 10-minute period is considered within the normal range. The normal fetal heart rate can range from 110 to 160 beats per minute, and a rate of 100 is not concerning.
Choice B rationale:
The resting period of a contraction refers to the time between contractions when the uterus is relaxed. A resting period of 35 seconds is also considered normal. In labor, the resting period between contractions allows the placenta to receive oxygen and nutrients, and 35 seconds is a rationaleable duration.
Choice C rationale:
A contraction lasting 85 seconds is abnormal and should be reported to the provider. Normally, contractions last around 60-90 seconds, but an 85-second contraction may indicate uterine hyperactivity or other issues that could potentially affect the well-being of both the mother and the baby.
Choice D rationale:
Having four contractions in a 10-minute period is considered normal during labor. In fact, an average pattern includes 3-5 contractions within a 10-minute window, so this finding is not a cause for concern.
Correct Answer is B
Explanation
The correct answer is choice B: Apply an ice pack to the perineum. This is the recommended action for unrelieved episiotomy pain within the first 24 hours following delivery, as it helps reduce swelling and provide pain relief.
Choice A rationale:
Placing a soft pillow under the client’s buttocks may provide comfort, but it does not directly address the inflammation and pain associated with an episiotomy. It is not the primary intervention for unrelieved episiotomy pain shortly after delivery.
Choice B rationale:
Applying an ice pack to the perineum is a standard practice for reducing pain and swelling after an episiotomy. The cold temperature causes vasoconstriction, which can help to decrease swelling and provide pain relief. This is especially effective within the first 24 hours post-delivery.
Choice C rationale:
Positioning a heating lamp toward the episiotomy is not recommended immediately following the procedure, as heat can increase blood flow to the area, potentially worsening swelling and pain in the acute phase after the surgery.
Choice D rationale:
While a warm sitz bath may be beneficial for episiotomy pain relief, it is typically recommended after the initial 24-hour period post-delivery. In the first 24 hours, cold therapy is preferred to reduce acute inflammation and pain.
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