Minutes after an IV cephalosporin dose, a 22-year-old develops generalised urticaria, lip and eyelid swelling, wheeze and a BP of 78/42 mmHg. After stopping the infusion, which drug and route are first-line?
- AOral cetirizine 10 mg and observation for 30 minutes
- BIV hydrocortisone 200 mg as the first drug
- CNebulised salbutamol with oxygen as the first drug
- DIM adrenaline 0.5 mg (1 mg/mL) into the anterolateral thigh