A nurse is preparing to administer an Intramuscular injection to a newborn. Considering the newborn's unique anatomy and safest practices, which site should the nurse prioritize for the injection?

Identify the patient population and anatomical considerations The patient is a newborn. In newborns and infants, the muscles of the buttocks (gluteus maximus) and the arms (deltoid) are not yet well-developed. Evaluate the safest injection site The Vastus Lateralis (anterolateral thigh) is the largest and most developed muscle mass in a newborn. It is located away from major nerves (such as the sciatic nerve) and blood vessels, making it the safest and most recommended site for intramuscular injections in this age group.