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Review Question - QID 216588

In scope icon M 11
QID 216588 (Type "216588" in App Search)
A 22-year-old man presents to the emergency department with difficulty breathing. He has experienced similar symptoms before. Today, he was hit in the face with a football, followed by significant swelling of his lips and tongue. The patient speaks with a muffled voice. His temperature is 98.1°F (36.7°C), blood pressure is 120/83 mmHg, pulse is 80/min, respirations are 16/min, and oxygen saturation is 98% on room air. Physical exam reveals swollen lips and a protruding, enlarged tongue. His breath sounds are clear. He demonstrates no rash and his abdomen is soft and nontender. Which of the following is the most effective therapy for this patient?