What is the recommended initial management for mild croup in the ED?

• A. Nebulized epinephrine
• B. Antibiotics
• C. Dexamethasone (single dose) and humidified air; monitor
• D. Intubation

Answer: (C)

Treating mild croup centers on reducing airway inflammation with a single dose of dexamethasone and providing supportive care while monitoring for any signs of progression. A corticosteroid such as dexamethasone quickly decreases subglottic edema, improving stridor and respiratory effort for up to a day or more with a single dose, making it the most effective initial intervention. Humidified air is a common supportive measure that can help patient comfort, though the primary therapeutic effect comes from the dexamethasone. Antibiotics are not indicated because croup is typically viral, and they won’t shorten illness. Nebulized epinephrine is reserved for more moderate to severe cases with significant distress or stridor at rest, where rapid improvement is needed, not for mild disease. Intubation is only a last-resort option for life-threatening airway obstruction, which would not be expected in mild croup. Continuous monitoring ensures that any worsening is detected early, allowing escalation of care if needed.