For which population is the vastus lateralis site recommended for injections?

The vastus lateralis muscle, located in the thigh, is the preferred site for intramuscular injections in infants and children younger than 3 years old. This recommendation is primarily due to the muscle's size and position; it is sufficiently developed at birth and provides a large muscle mass that can accommodate injections.

Using the vastus lateralis for these age groups reduces the risk of injury to nerves and blood vessels that are more prominent in areas like the gluteal muscle, which is often avoided in young children. Additionally, this site is easily accessible, making it convenient for healthcare providers when administering vaccines or medications to infants and toddlers.

The best practice for intramuscular injections in infants emphasizes safety and effectiveness, which the vastus lateralis supports. This site is also commonly used for vaccinations, but it is specifically promoted for young children and infants as a preferred injection site, rather than being limited to just vaccinations or certain age groups, like adults or elderly patients.