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
Explanation
Choice A: The correct answer is (a) Bleeding. The purpose of administering vitamin K to a newborn following delivery is to prevent bleeding complications. Vitamin K plays a crucial role in the synthesis of blood clotting factors, specifically factors II, VII, IX, and X. Newborns have low levels of vitamin K at birth, and it takes a few days for their bodies to start producing it. This places them at risk of developing vitamin K deficiency bleeding (VKDB), which can lead to serious bleeding problems, including bleeding into the brain (intracranial haemorrhage). By giving the newborn a vitamin K injection, this deficiency is corrected, reducing the risk of bleeding complications.
Choice B rationale
(b) Infection. Administering vitamin K to a newborn is not intended to prevent infections. Vitamin K is essential for blood clotting and does not have a direct role in preventing or treating infections. Infection prevention measures involve proper hygiene practices and vaccination, but vitamin K is unrelated to this aspect of care.
Choice C rationale
(c) Potassium deficiency. Administering vitamin K to a newborn has no impact on potassium levels. Potassium is a different essential nutrient that plays a vital role in various physiological processes, but it is not related to blood clotting. The administration of vitamin K is specific to preventing bleeding complications, not addressing potassium deficiency.
Choice D rationale
(d) Hyperbilirubinemia. The correct answer is not (d) Hyperbilirubinemia. Vitamin K administration is not aimed at preventing or treating hyperbilirubinemia, a condition characterized by elevated levels of bilirubin in the blood. Hyperbilirubinemia is related to the breakdown of red blood cells and the liver'sability to process bilirubin, whereas vitamin K's primary role is in the clotting cascade.
Correct Answer is A
Explanation
Choice A rationale:
The nurse should recommend the client to increase cellulose and fluid in the diet. Cellulose is a type of fiber found in fruits, vegetables, and whole grains. Increasing fiber intake can help alleviate constipation by adding bulk to the stool and promoting regular bowel movements. Additionally, the recommendation to increase fluid intake complements the effect of fiber, as it softens the stool, making it easier to pass through the intestines. This combination of increased cellulose and fluid intake is a safe and natural way to address constipation during pregnancy without the need for medication or invasive interventions.
Choice B rationale:
Regular use of glycerine suppositories is not the best recommendation for pregnant clients experiencing constipation. Suppositories are inserted into the rectum to stimulate bowel movements and should only be used sparingly when other methods have failed. Pregnant individuals may have increased sensitivity, and it's essential to avoid unnecessary procedures or potential discomfort.
Choice C rationale:
Regular use of a laxative is also not the most suitable recommendation for a pregnant client with constipation. While laxatives can provide relief, they may lead to dependency and might have adverse effects on the developing fetus. It is best to explore safer and more natural methods before resorting to laxative use during pregnancy.
Choice D rationale:
Maintenance of good posture is essential during pregnancy for various rationales, but it is not a specific solution for constipation. While maintaining good posture can help alleviate back pain and other discomforts, it does not directly address the issue of constipation.
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