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:
The nurse should not advise the client to take deep, cleansing breaths before and after each contraction because it can interfere with the natural urge to push and may not be effective in helping with the labor process. When a client feels the urge to push, it is essential to work with their body's natural instincts.
Choice B rationale:
Instructing the client to hold their breath and push while counting to ten is not recommended. This Valsalva manoeuvre can cause a sudden increase in intra-abdominal pressure, which may reduce blood flow to the heart and brain and may be harmful to both the client and the baby. It's crucial to promote safe pushing techniques during labor.
Choice C rationale:
The instruction to push continuously throughout the entire contraction is also not ideal. Pushing continuously can lead to exhaustion and decrease the effectiveness of each push. It's essential to guide the client on when and how to push effectively to prevent unnecessary fatigue.
Choice D rationale:
The correct instruction is to let the client know when to push according to their contractions. The urge to push is a natural reflex that signifies the baby's descent into the birth canal. The nurse should encourage the client to listen to their body and push when they feel the urge during the contractions. This approach optimizes the client's efforts and conserves their energy for delivery.
Correct Answer is B
Explanation
Choice B rationale:
The correct answer is Choice B, which is "Newborn hypoglycemia.”. Newborn hypoglycemia is a potential complication associated with maternal gestational diabetes. When a pregnant woman has gestational diabetes, her blood glucose levels can be elevated, leading to increased insulin production in the fetus. After birth, the baby's insulin production continues at a high level, which can result in a rapid drop in blood glucose levels, causing hypoglycemia. This condition can be serious and requires close monitoring and timely intervention to prevent complications in the newborn.
Choice A rationale :
Placenta previa is not a complication associated with maternal gestational diabetes. Placenta previa occurs when the placenta partially or completely covers the cervix, which can lead to bleeding during pregnancy and delivery. However, this condition is not directly related to gestational diabetes, and there is no physiological rationale connecting the two.
Choice C rationale
Small for gestational age (SGA) newborn is not a direct complication of maternal gestational diabetes. SGA refers to babies who are smaller in size than expected for their gestational age. While poorly controlled diabetes during pregnancy can lead to large babies (macrosomia), it is not typically associated with small babies.
Choice D rationale
Oligohydramnios, which is a condition characterized by low levels of amniotic fluid, is not a common complication associated with maternal gestational diabetes. Oligohydramnios can be caused by various factors, but it is not specifically linked to gestational diabetes.
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