Allergic Reactions and Anaphylaxis Practice Test

An AEMT administers 0.5 mg of IM epinephrine to a 200-lb male in anaphylactic shock. What is the most important parameter to reassess within five minutes of administration?

You arrive at a home for a 50-year-old female with a new medication reaction. She began a new pain medication today after dental work. She has a diffuse rash, feels lightheaded, and reports shortness of breath. A medical alert bracelet indicates “Opioid allergy.” She is sitting on the floor supported by family. Lung sounds reveal mild wheezes; she is speaking in full sentences but appears fatigued. Vitals: BP 98/64, HR 112, RR 22, SpO2 95% on room air. Family has opened windows, stopped the medication, and called 911. No epinephrine has been administered.

Based on the scenario, what is the recommended dosage of epinephrine for this patient?