Emergency Medical Technician (EMT) Intermediate Practice Exam

What is the correct epinephrine dosage for patients who weigh more than 66 pounds?

1. 0.15 mg

2. 0.3 mg

3. 0.5 mg

4. 1.0 mg

The correct answer is: 0.3 mg

The correct dosage of epinephrine for patients who weigh more than 66 pounds is 0.3 mg. This dosage is standard for the treatment of anaphylactic reactions in adults and children who meet the weight criteria. Epinephrine is administered intramuscularly, typically in the mid-anterolateral thigh, to rapidly counteract the severe symptoms of anaphylaxis such as airway constriction, hypotension, and angioedema. In practice, the recommended dosage often reflects a simplified dosing approach: 0.3 mg is a standard dose for adults and older children. Patients 66 pounds or heavier are generally treated similarly to adults, thus the 0.3 mg dosage aligns with guidelines established by health organizations for emergency management of anaphylaxis. Selection of this dosage over alternatives is crucial because an insufficient dose may not provide adequate relief from anaphylactic symptoms, while a larger dose may increase the risk of adverse side effects such as hypertension or tachycardia. The context within clinical practice emphasizes adhering closely to established protocols based on weight to ensure optimal outcomes during emergency interventions.