A 17-year-old boy with known peanut allergy presents to the emergency department minutes after eating a cookie at school. He has diffuse urticaria, wheezing, and angioedema of the lips. Vital signs show BP 88/54 mmHg, HR 118/min, RR 22/min, and SpO2 92% on room air. Serum tryptase is elevated at 12 ng/mL. He denies prior anaphylaxis. An injection is administered to the lateral thigh. Which agent is most appropriate because it causes bronchodilation and increases peripheral vascular resistance?
- A)Prednisone
- B)Diphenhydramine
- C)Montelukast
- D)Albuterol
- E)EpinephrineGABARITO
Explicação
Epinephrine is the first-line treatment for anaphylaxis because it stimulates alpha-1, beta-1, and beta-2 receptors. This reverses hypotension through vasoconstriction and relieves bronchospasm through bronchodilation. The rapidly progressive multisystem aller... Ver explicação completa e trilha adaptativa →