What is the correct concentration and dose for epinephrine for an adult asthmatic in severe distress?

What is the correct concentration and dose for epinephrine for an adult asthmatic in severe distress?

• A. 1:1000 0.01 mg/kg (MAX 0.5 mg)
• B. 1:10000 0.01 mg/kg
• C. 1:1000 0.1 mg/kg
• D. 1:1000 0.01 mg/kg (MAX 0.2 mg)

Answer: (A)

Dosing epinephrine for an adult in severe asthma distress uses a 1:1000 intramuscular injection given in a weight-based amount of 0.01 mg per kilogram, with a per-dose maximum of 0.5 mg. This approach provides effective bronchodilation through beta-2 effects while keeping cardiovascular risks in check. The 1:1000 concentration is appropriate for IM use in acute bronchospasm, whereas 1:10000 is an IV dilution not used for IM injections in this scenario. A dose of 0.1 mg/kg would be far too high for a single dose, risking severe tachycardia and hypertension. A maximum of 0.2 mg per dose is also too low to reliably treat severe distress in many adults.

Dosing epinephrine for an adult in severe asthma distress uses a 1:1000 intramuscular injection given in a weight-based amount of 0.01 mg per kilogram, with a per-dose maximum of 0.5 mg. This approach provides effective bronchodilation through beta-2 effects while keeping cardiovascular risks in check. The 1:1000 concentration is appropriate for IM use in acute bronchospasm, whereas 1:10000 is an IV dilution not used for IM injections in this scenario. A dose of 0.1 mg/kg would be far too high for a single dose, risking severe tachycardia and hypertension. A maximum of 0.2 mg per dose is also too low to reliably treat severe distress in many adults.