RN ATI Maternal Proctored Exam 2023-2024 with NGN -Nurselytic

Correct Answer: A

Rationale: The correct answer is A: Administer the injection into the vastus lateralis muscle. For newborns, the vastus lateralis muscle is the preferred site for intramuscular injections due to its size and well-developed muscle mass, ensuring proper absorption and minimizing the risk of injury to surrounding structures. Administering the vaccine into this muscle also helps improve vaccine efficacy.

Choices B, C, and D are incorrect.
Choice B, vigorously massaging the site, can cause discomfort, bruising, and potential tissue damage.
Choice C, inserting the needle at a 45° angle, is not recommended for intramuscular injections as the needle should be inserted at a 90° angle to ensure proper delivery into the muscle.
Choice D, using a 21-gauge needle, is not specific for newborns and can be too large for their small muscle mass, causing unnecessary pain and potential tissue damage.

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