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.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
The fit of the newborn's clothes is not a reliable indicator of hydration. It may vary based on the clothing size or style and does not give a direct measure of the newborn's hydration status. This choice is not appropriate for evaluating hydration and is therefore incorrect.
Choice B rationale:
The number of wet diapers per day is an essential measure for assessing a newborn's hydration. In the first few days after birth, the baby should have at least one wet diaper for each day of life (e.g., one wet diaper on day one, two on day two, etc.). Afterward, the newborn should have around 6-8 wet diapers per day, which indicates adequate hydration. This choice is appropriate and the correct answer.
Choice C rationale:
How often the newborn cries can be influenced by various factors, including hunger, discomfort, or sleepiness. While crying can indicate the baby's needs, it is not a specific or accurate measure of hydration status. Therefore, this choice is not appropriate for evaluating hydration and is incorrect.
Choice D rationale:
The newborn's skin turgor is a measure of skin elasticity, commonly used in adults to assess hydration. However, it is not a reliable indicator of hydration in newborns, as their skin is more elastic and different from adult skin. Skin turgor is not a suitable parameter to evaluate newborn hydration, making this choice incorrect.
Correct Answer is A
Explanation
Choice A rationale:
Cephalhematoma is the correct answer because it presents as a swelling on the newborn's head confined to one cranial bone and does not cross suture lines. It usually resolves on its own within a few weeks to months but can increase the risk of jaundice due to the breakdown of red blood cells in the hematoma.
Choice B rationale:
Nevus flammeus, also known as a port-wine stain, is a type of vascular birthmark. It presents as a flat, pink, or red mark on the skin and does not involve swelling of the head. This choice is unrelated to the findings described in the question and is therefore incorrect.
Choice C rationale:
Caput succedaneum refers to a diffuse, soft tissue swelling of the scalp that does cross suture lines. It is caused by pressure on the head during delivery, leading to edema and bruising. It typically resolves within a few days after birth.
Choice D rationale:
Molding refers to the shaping of the fetal head during childbirth as it passes through the birth canal. It may cause temporary elongation or molding of the head, but it does not present as a localized swollen area. This choice is not applicable to the findings mentioned in the question and is thus incorrect.
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