When dealing with a severe allergic reaction, what is the first priority?

In the case of a severe allergic reaction, such as anaphylaxis, the first priority is to ensure airway patency. This is vital because anaphylaxis can cause swelling in the throat and lead to airway obstruction, which can be life-threatening if not addressed immediately. Ensuring that the airway is clear allows for adequate breathing and oxygenation, which are critical in emergencies.

After airway patency is maintained, additional measures may follow, such as administering epinephrine if available, addressing any known allergens, or providing supplemental oxygen if needed. The focus on airway management reflects the broader principle in emergency care of addressing the most immediate life-threatening concerns first.