2. 一位19歲的男性被虎頭蜂叮螯之後,發生昏眩、冒冷汗及呼吸困難。經送急診之後,請問下列的何種處置應最為優先?
(A) High-dose glucocorticoid (1 mg/kg/day) injection
(B) 1:1000 x diluted epinephrine subcutaneous injection
(C) Check arterial blood gas (ABG)
(D) Anti-histamine intramuscular injection
(E) Endotracheal intubation