For a 9-year-old patient experiencing anaphylaxis after peanut exposure, what is the appropriate dose of epinephrine 1:1,000 IM?

For a 9-year-old patient experiencing anaphylaxis, the appropriate dose of epinephrine is typically based on weight. The standard dosage for anaphylaxis in pediatric patients is 0.01 mg/kg of body weight, administered intramuscularly (IM), using the 1:1,000 concentration.

For a child weighing about 30 kg (which is common for a 9-year-old), the calculation for the dose would be 0.01 mg/kg x 30 kg = 0.3 mg. This aligns with the dose of 0.3 mg, making it the recommended standard for managing anaphylaxis in children of this age group and weight.

Administering epinephrine promptly is critical in cases of anaphylaxis, as it can rapidly reverse severe allergic reactions, including airway swelling and hypotension. The intramuscular route is preferred because it allows for faster absorption into the bloodstream compared to subcutaneous administration. Therefore, 0.3 mg is the correct dose for a 9-year-old in this situation.