In a newborn infant, which of the following is the liver's job related to bilirubin?
Changing conjugated bilirubin to unconjugated.
Synthesis of vitamin K.
Changing unconjugated bilirubin to conjugated bilirubin.
Removal of meconium.
The Correct Answer is C
Choice A rationale:
The liver's job related to bilirubin is not changing conjugated bilirubin to unconjugated. Conjugated bilirubin is the water-soluble form of bilirubin that is excreted in bile and urine. Unconjugated bilirubin, on the other hand, is the fat-soluble form, which is transported to the liver and conjugated to become water-soluble. The conversion goes from unconjugated to conjugated, not the other way around.
Choice B rationale:
The liver's job related to bilirubin is not the synthesis of vitamin K. The liver is responsible for synthesizing clotting factors, including factors II (prothrombin), VII, IX, and X, but not vitamin K itself. Vitamin K is obtained from dietary sources or supplements and is essential for blood clotting.
Choice C rationale:
This choice is the correct answer. The liver's primary function related to bilirubin is changing unconjugated bilirubin to conjugated bilirubin. As mentioned earlier, unconjugated bilirubin is produced from the breakdown of heme in old red blood cells, and it needs to be processed in the liver to become water-soluble and eventually excreted in bile and urine.
Choice D rationale:
The liver's job related to bilirubin does not involve the removal of meconium. Meconium is the first stool passed by a newborn, and its elimination is unrelated to the liver's function in processing bilirubin.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
This is the priority finding because a bilirubin level of 18 mg/dL in a 4-hour-old newborn is significantly elevated. High bilirubin levels in newborns can lead to jaundice, which can be harmful if not promptly addressed. Hyperbilirubinemia in newborns requires close monitoring and, in some cases, treatment with phototherapy.
Choice B rationale:
A hemoglobin level of 22 g/dL is within the normal range for a newborn and is not a priority concern at this time.
Choice C rationale:
A blood glucose level of 50 mg/dL is within the normal range for a newborn. While monitoring blood glucose levels is essential, it is not the priority in this situation.
Choice D rationale:
A platelet count of 200,000/mm³ is within the normal range for a newborn and does not require immediate action.
Correct Answer is B
Explanation
Choice A rationale:
This response would not be appropriate because it provides incorrect information. Breast milk is already present in the mother's breasts during pregnancy, and the newborn's disinterest in eating is likely due to other factors.
Choice B rationale:
This is the best response because it acknowledges the mother's concern and offers a practical solution to help the newborn latch onto the breast properly. Correct latching is crucial for successful breastfeeding, and once the baby latches on correctly, they are more likely to breastfeed effectively.
Choice C rationale:
While it is true that newborns often experience deep sleep phases, attributing the disinterest in eating solely to deep sleep is not accurate. Offering support and guidance for breastfeeding would be more beneficial.
Choice D rationale:
This response oversimplifies the situation and may not address the actual reason for the newborn's disinterest in feeding. It is essential to help the mother with proper techniques rather than just waking up the baby.
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