What is the recommended single dose of epinephrine for an infant or child with a severe allergic reaction?

The recommended single dose of epinephrine for an infant or child experiencing a severe allergic reaction, such as anaphylaxis, is typically 0.15 mg. This dosage is based on the child's weight and is designed to provide effective treatment without unnecessary risk.

Epinephrine acts to counteract the severe effects of allergies by causing vasoconstriction, bronchodilation, and reducing vascular permeability, which are critical in managing anaphylaxis. Using the correct dosage is particularly important in children to ensure efficacy and safety.

While dosing can sometimes be guided by weight, the standard dose of 0.15 mg for pediatric patients reflects a balance where the benefits of rapid action outweigh potential risks of overstimulation of the cardiovascular system. For infants and younger children, this dose can be administered through an auto-injector, such as an EpiPen Jr., which is specifically designed for this age group.

It's essential to follow established guidelines and protocols regarding dosage to improve outcomes during emergencies, ensuring that treatment is both timely and effective.