Question

A 40-year-old with diffuse urticaria and wheeze after antibiotic exposure received IM epinephrine with improvement. How long should he be observed for biphasic reactions given risk factors (severe reaction)?

Accepted Answer

At least 4-6 hours; longer if severe features

Answer

1 hour

Answer

No observation needed after symptom relief

Answer

24-48 hours inpatient for all anaphylaxis

Answer

Overnight ICU for all

Practice question

A 40-year-old with diffuse urticaria and wheeze after antibiotic exposure received IM epinephrine with improvement. How long should he be observed for biphasic reactions given risk factors (severe reaction)?