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A nurse is assessing a 4-month-old infant on a pediatric unit.
Which of the following findings should the nurse expect?

A.

Uses thumb and index fingers in a pincer grasp.

B.

Closed posterior fontanel.

C.

Lateral incisors.

D.

Sitting steadily without support.

Answer and Explanation

The Correct Answer is B

Choice A rationale

A pincer grasp, using the thumb and index finger to pick up small objects, typically develops around 9 to 12 months of age, not at 4 months.

 

Choice B rationale

The posterior fontanel typically closes by the age of 2 to 3 months, so a 4-month-old infant would be expected to have a closed posterior fontanel. This finding is consistent with normal development.

 

Choice C rationale

Lateral incisors, the teeth on either side of the front teeth, typically erupt around 9 to 13 months of age, not at 4 months.

 

Choice D rationale

Sitting steadily without support generally occurs closer to 6 to 8 months of age, so it would not be expected in a 4-month-old infant.


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View Related questions

Correct Answer is A

Explanation

Choice A rationale

It is common for children who are hospitalized to regress temporarily in their behavior, including toilet training. Stress, unfamiliar environments, and illness can contribute to this regression. Assuring the parents that the child’s skills will return when they feel better helps alleviate their concerns.

Choice B rationale

Asking why it bothers the parent that their child has wet the bed may come across as insensitive or confrontational. It does not provide support or reassurance to the parent.

Choice C rationale

Telling the parent not to worry about the child wetting the bed because the child did not seem upset dismisses the parent’s feelings and does not address the underlying issue of the child’s regression.

Choice D rationale

Sharing personal experiences and saying it doesn’t bother the nurse may seem empathetic but does not provide the professional reassurance and support the parents need. It shifts the focus to the nurse rather than addressing the parents' concerns.

Correct Answer is A

Explanation

Choice A rationale

Preterm newborns have underdeveloped mechanisms for thermoregulation, making it difficult for them to maintain stable body temperatures without external assistance.

Choice B rationale

Preterm newborns do not sweat significantly because their sweat glands are not fully developed; thus, this rationale is incorrect.

Choice C rationale

Preterm newborns actually have a larger body surface area relative to their weight, contributing to their difficulty in maintaining body temperature.

Choice D rationale

Preterm newborns have insufficient brown fat, not an excess, which impairs their ability to generate heat effectively.

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