A nurse is preparing to administer vitamin K by IM injection to a newborn.The nurse should administer the medication into which of the following muscles?

Choice A rationaleThe ventrogluteal muscle, located in the hip, is a safe site for intramuscular injections in adults and children older than seven months due to its distance from major nerves and blood vessels. However, the vastus lateralis muscle in the thigh is the preferred site for IM injections in newborns and infants due to its well-developed muscle mass and accessibility.Choice B rationaleThe deltoid muscle, located in the upper arm, is small and not well-developed in newborns, making it an unsuitable site for intramuscular injections. There is also a risk of injury to the brachial nerve and blood vessels in this area in neonates.Choice C rationaleThe dorsogluteal muscle, located in the buttocks, is no longer the recommended site for intramuscular injections in infants and young children due to the proximity of the sciatic nerve and major blood vessels, increasing the risk of nerve damage.Choice D rationaleThe vastus lateralis muscle, located on the anterolateral aspect of the thigh, is the recommended site for intramuscular injections in newborns. It is a large, well-developed muscle that is easily accessible and away from major nerves and blood vessels, making it a safe and effective site for administering vitamin K to prevent hemorrhagic disease of the newborn.