Option C - Vastus lateralis muscle
Vastus lateralis muscle is appropriate for the injection by the nurse when preparing to administer the vitamin K injection to a neonate.
Deltoid muscle is not large enough in a neonate and is not appropriate for the injection.
Anterior femoris muscle will be the next best choice after vastus laterals because it is a large muscle but it is in close proximity with the sciatic nerve, it should be avoided for the injection unless vastus laterals muscle cannot be used. Gluteus maximus should be avoided for this injection in a neonate.
Vastus lateralis muscle-the middle third of the vastus lateralis is the preferred injection site for vitamin k administration because it is free of blood vessels and nerves and is large enough to absorb the medication. the deltoid muscle of a newborn is not large enough for a newborn im injection. injections into this muscle in a small child might cause damage to the radial nerve. the anterior femoris muscle is the next safest muscle to use in a newborn but is not the safest. because of the proximity of the sciatic nerve, the gluteus maximus muscle should not be until the child has been walking 2 years.