The nurse notes that a newborn's white blood cell count (WBC) is 15,000. The nurse is aware that:.

This indicates a severe infection.

This is a normal WBC for a newborn.

This is a lab error.

You must call the doctor.

Answer and Explanation

The Correct Answer is B

Choice A rationale:

A white blood cell count of 15,000 does not necessarily indicate a severe infection. In newborns, WBC counts are typically higher than in adults, and they gradually decrease over the first few days after birth. A value of 15,000 falls within the normal range for a newborn and is not indicative of a severe infection.

Choice B rationale:

A white blood cell count of 15,000 is considered a normal range for a newborn. Newborns have higher WBC counts as a natural response to the stress of birth and exposure to the outside environment. The immune system is still developing, and elevated WBC counts are normal during this period.

Choice C rationale:

Assuming there are no other indications of lab error, such as abnormal results in other tests, it would be premature to label the WBC count as a lab error. Additionally, healthcare professionals should always consider the overall clinical picture before assuming a lab error based on a single result.

Choice D rationale:

There is no immediate need to call the doctor based solely on the WBC count of 15,000. Medical decisions should be made in the context of the newborn's overall clinical condition, and a single lab result does not warrant an immediate call to the doctor.

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Correct Answer is ["B","C","D"]

Explanation

Choice A: Warm the bottle in the microwave.

Rationale: Warming bottles in the microwave is not recommended. Microwaving can cause uneven heating, creating hot spots in the milk or formula that can burn the baby's mouth. Instead, bottles should be warmed by placing them in a container of warm water or using a bottle warmer.

Choice B: Store prepared bottles in the refrigerator.

Correct
Rationale: Prepared bottles of formula should be stored in the refrigerator to prevent bacterial growth. Formula should be used within 24 hours of preparation when properly stored in the refrigerator.

Choice C: Discard unused formula in used bottle after 2 hours.

Correct
Rationale: Any unused formula that has been in contact with the baby’s mouth should be discarded after 2 hours due to the risk of bacterial contamination. Bacteria from the baby's saliva can grow in the leftover formula.

Choice D: Never prop a bottle.

Correct
Rationale: Bottles should never be propped up and left in the baby’s mouth. This practice increases the risk of choking, ear infections, and tooth decay. Caregivers should always hold the bottle and the baby during feedings.

Choice E: Formula is available in three forms.

Correct
Rationale: Formula is available in three forms: powdered, concentrated liquid, and ready-to-feed. Parents should be informed of these options so they can choose the most convenient or appropriate form based on their needs.

A. Changing conjugated bilirubin to unconjugated. B. Synthesis of vitamin K. C. Changing unconjugated bilirubin to conjugated bilirubin. D. Removal of meconium.

Correct Answer is C

Explanation

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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The nurse notes that a newborn's white blood cell count (WBC) is 15,000. The nurse is aware that:.

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Naxlex Comprehensive Predictor Exams

What should be included in teaching for bottle-feeding parents? Select all that apply.

Correct Answer is ["B","C","D"]

Explanation

Choice A: Warm the bottle in the microwave.

Choice B: Store prepared bottles in the refrigerator.

Choice C: Discard unused formula in used bottle after 2 hours.

Choice D: Never prop a bottle.

Choice E: Formula is available in three forms.

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

Correct Answer is C

Explanation

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The nurse notes that a newborn's white blood cell count (WBC) is 15,000. The nurse is aware that:.