In which of the following areas should a nurse administer an injection for a newborn infant?
Deltoid muscle.
Vastus lateralis.
Gluteus maximus.
Rectus femoris.
The Correct Answer is B
Choice A rationale
The deltoid muscle is not recommended for newborns due to its small size and underdevelopment.
Choice B rationale
The vastus lateralis muscle is well-developed in newborns and has a large enough surface area to safely accommodate injections.
Choice C rationale
The gluteus maximus muscle is not suitable for newborn injections due to the risk of nerve damage.
Choice D rationale
The rectus femoris muscle is less commonly used due to the potential for more pain and discomfort.
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Correct Answer is B
Explanation
Choice A rationale
A front-facing car seat for an infant does not provide adequate protection in the event of a collision. Infants should always be in a rear-facing car seat to support their head, neck, and spine.
Choice B rationale
Using an infant model car seat designed specifically for the car ensures that the seat meets safety standards and is appropriate for the child's size and developmental needs, providing optimal protection.
Choice C rationale
Being able to fit a hand between the baby and the car seat harness indicates the harness is too loose. The harness should be snug enough that only one or two fingers can fit between the strap and the baby's chest to provide secure restraint.
Choice D rationale
A rear-facing car seat should not be placed in the front passenger seat due to the risk of injury from airbags. The safest position for a rear-facing car seat is in the back seat, away from active airbags.
Correct Answer is ["A"]
Explanation
Step 1 is 33 lb × (1 kg ÷ 2.2 lb) = 15 kg.
Step 2 is 30 mg/kg/day × 15 kg = 450 mg/day.
Step 3 is 450 mg/day ÷ 2 = 225 mg per dose.
Step 4 is 225 mg ÷ (200 mg/5 mL) = 5.625 mL. The final calculated answer is 5.6 mL.