A 26-year-old patient with a known peanut allergy presents t…
A 26-year-old patient with a known peanut allergy presents to the emergency department with acute onset of wheezing, facial edema, urticaria, hypotension, and tachycardia within minutes of accidental exposure. The patient is in respiratory distress with audible stridor and a blood pressure of 82/48 mm Hg. Epinephrine 1mg IM is administered immediately. Which mechanism best explains why epinephrine is lifesaving in this patient’s condition?