A 19-year-old-male with no known past medical history, presents in progressive respiratory distress shortly after undergoing a tooth extraction about 6 hours prior to presentation. Symptoms began initially as “a lump in his throat” and difficulty swallowing, but eventually progressed to mild dyspnea after 1-2 hours. Denies FB or allergies. On arrival he appears anxious and is breathing at 18 breaths per minute with an O2 saturation of 100%. There is no stridor at presentation. There is no intra-oral, facial, or obvious neck swelling. There is no skin involvement or abdominal pain, nausea, vomiting or diarrhea. You suspect allergic reaction and give IM epi, IV steroids, benadryl and pepcid. ENT is consulted for scope.
His girlfriend then arrives and tells you that a few months ago patient had a “reaction to something” that caused his face and lips to swell, but never sought treatment. Meanwhile, the patient is getting worse. He now has stridor and a muffled voice, breathing at 24 breaths per minute.