Evidence‑Based Management of Pediatric Croup: Observation After Epinephrine and Safety of Single‑Dose Dexamethasone

Adjunctive Nebulized Epinephrine

Observation strategy after racemic epinephrine

Steroid dosing and patient selection

Oral dexamethasone is the preferred route for children who can tolerate it; intramuscular dexamethasone is an acceptable alternative when oral administration is not feasible – recommendation endorsed by the American Academy of Otolaryngology‑Head and Neck Surgery and supported by high‑quality evidence from randomized studies. [3][4]

Nebulized epinephrine (0.5 mL/kg of 1:1000 solution, maximum 5 mL) is indicated for moderate to severe croup with significant respiratory distress – dosing recommendation based on randomized controlled trials. The therapeutic effect is short‑lived (approximately 1–2 hours), and children should be observed for at least 2 hours after administration. [5][6]7
Monitoring children for up to 2 hours after a second dose of racemic epinephrine, rather than automatic admission, reduces hospital admission rates by about 37% without increasing adverse outcomes – finding from a 2022 quality‑improvement study, providing moderate‑strength evidence for this practice change. 4