A young male is experiencing signs and symptoms of anaphylactic shock after being stung by a scorpion. His level of consciousness is diminished, his breathing is severely labored, you can hear inspiratory stridor, and his face is cyanotic. The patient has a prescribed epinephrine auto-injector. What should you do first?
Assist him in administering his epinephrine.
Apply high-flow oxygen via nonrebreathing mask.
Provide ventilatory assistance with a bag-mask device.
Elevate his legs and cover him with a warm blanket.