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.

Answer and Explanation

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.

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Correct Answer is C

Explanation

Choice A rationale:

Wearing a supportive bra can actually help to manage engorgement, so it's not recommended to avoid wearing one during the day.

Choice B rationale:

Cold compresses are typically applied after feeding to reduce swelling, not before. Applying them before might hinder the milk let-down reflex.

Choice C rationale:

Frequent feeding can help to alleviate engorgement by ensuring that the breasts are being emptied regularly.

Choice D rationale:

Stopping breastfeeding until finishing antibiotics is not advisable, as it can lead to decreased milk supply and potential issues with engorgement. Antibiotics prescribed by a healthcare provider are usually safe to take while breastfeeding, and interrupting breastfeeding can exacerbate the engorgement problem. This choice is not appropriate for managing breast engorgement and is therefore incorrect.

A. The newborn's temperature control mechanism is immature. B. Heat increases the flow of oxygen to the newborn's extremities. C. The newborn has a small body surface for his weight. D. Heat facilitates the drainage of mucus for a premature newborn.

Correct Answer is A

Explanation

Choice A rationale:

Placing the newborn in an incubator is essential because the newborn's temperature control mechanism is immature. Premature infants have an underdeveloped thermoregulatory system, making them susceptible to heat loss and cold stress. An incubator provides a controlled, warm environment to maintain the newborn's body temperature within the normal range (around 36.5°C to 37.5°C or 97.7°F to 99.5°F).

Choice B rationale:

Heat increasing the flow of oxygen to the newborn's extremities is not a valid reason for placing the newborn in an incubator. Oxygenation is primarily influenced by respiratory and circulatory mechanisms, not external heat.

Choice C rationale:

The newborn's small body surface area for his weight is not directly related to the need for an incubator. Premature infants have a higher surface area to weight ratio, making them more prone to heat loss, but this is not the primary reason for using an incubator.

Choice D rationale:

Heat facilitating the drainage of mucus is not a reason for placing the newborn in an incubator. Proper positioning and suctioning are used to manage mucus in premature infants, but incubators are primarily for temperature regulation.

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In a newborn infant, which of the following is the liver's job related to bilirubin?

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Naxlex Comprehensive Predictor Exams

A home health care nurse is reinforcing teaching about breast engorgement with a client who is postpartum and is breastfeeding her newborn. Which of the following client statements indicates an understanding of the teaching?

Correct Answer is C

Explanation

A nurse is caring for a newborn who is at 34 weeks of gestation, weighs 1,550 g, and has nasal flaring, intercostal retractions, expiratory grunting, and mild cyanosis. The nurse should place the newborn in an incubator for which of the following reasons?

Correct Answer is A

Explanation

A nurse is collecting data from a newborn and finds an apical pulse of 130/min. Which of the following actions should the nurse take?

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