Which scalp vein is considered acceptable for venous access in infants?

The superficial temporal vein is considered an acceptable site for venous access in infants due to its accessibility and superficial location. This vein typically runs along the side of the forehead and is relatively large, making it easier to cannulate in comparison to deeper veins. It is generally well-formed in infants and can provide a reliable route for venous access, which is necessary for procedures such as blood draws or medication administration.

In infants, proper venous access is crucial because their veins are smaller and more delicate than those of older children and adults. The superficial temporal vein's anatomical positioning allows for straightforward access without significant risk of complications, provided that the procedure is performed by someone trained in pediatric venous access.

The other veins listed—radial, axillary, and femoral—are less suitable for infant venous access. The radial vein is located deeper in the forearm and is more challenging to access due to the smaller size of infant veins. The axillary vein is located nearby major arteries and nerves, increasing the risk of complications with access. The femoral vein, although large, is deeper and not as easily accessible, especially in infants where the anatomy can be more variable and venous access may pose more risks. Therefore, the superficial temporal vein stands