A nurse is assessing a 4-month-old infant on a pediatric unit.
Which of the following findings should the nurse expect?
Uses thumb and index fingers in a pincer grasp.
Closed posterior fontanel.
Lateral incisors.
Sitting steadily without support.
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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Correct Answer is A
Explanation
Choice A rationale
Storing a firearm in a top drawer is unsafe, even if it is out of the child’s immediate reach. Firearms should be securely locked in a location inaccessible to children.
Choice B rationale
Locking cleaning products under the sink is a safe practice to prevent accidental poisoning, demonstrating correct safety precautions.
Choice C rationale
Placing safety covers on electrical outlets is a safe practice to prevent electrical shocks, indicating proper home safety measures.
Choice D rationale
Installing safety gates at the top and bottom of stairs is a recommended safety measure to prevent falls, showcasing awareness of proper childproofing.
Correct Answer is C
Explanation
Choice A rationale
AAP guidelines recommend rear-facing car seats for children under 24 months due to superior protection in a collision.
Choice B rationale
The chest buckle should be at armpit level to prevent injury in case of a crash.
Choice C rationale
Switching to a forward-facing car seat at 12 months contradicts safety recommendations; the child should remain rear-facing until at least 2 years old.
Choice D rationale
Car seats should always be placed in the back seat to minimize risk from front airbags during collisions.