A 32-year-old female with a known shellfish allergy is broug…
A 32-year-old female with a known shellfish allergy is brought to the emergency department in respiratory distress. The patient accidentally ingested shrimp in an incorrectly labeled dish at a local seafood buffet. She subsequently developed urticaria, with facial flushing and clear rhinorrhea. Upon arrival to the emergency department, the patient developed tachycardia and angioedema of her tongue. The patient’s vital signs reveal pulse 113/min, blood pressure 80/42 mm Hg, and respirations 32/min. Which of the following is the best initial treatment for this patient?