In pediatric croup, which pharmacologic management is appropriate for moderate to severe symptoms?

• A. Antibiotics are first-line.
• B. Administer systemic steroids and consider nebulized epinephrine for severe symptoms.
• C. Use antiviral therapy only.
• D. Oxygen is contraindicated.

Answer: (B)

In pediatric croup, the primary approach for moderate to severe symptoms is to rapidly reduce airway inflammation and edema while ensuring oxygenation. Systemic corticosteroids, such as dexamethasone given as a single dose (about 0.6 mg/kg, oral or parenteral), are first-line because they decrease airway swelling, shorten the illness, and often lessen the need for hospitalization. When symptoms are more pronounced, nebulized epinephrine is used for its rapid, short-term effect: vasoconstriction and reduced edema in the upper airway, which improves stridor and breathing within minutes. Because the epinephrine effect is temporary, a systemic steroid is given to maintain improvement and prevent rebound swelling.

Oxygen therapy should be provided if the child is hypoxemic to maintain adequate saturation; it is not contraindicated and is often necessary in more severe cases. Antibiotics are not routinely used in typical viral croup unless there is a specific bacterial concern, and antiviral therapy is not standard since most cases are viral. This combination—systemic steroids plus nebulized epinephrine for more severe symptoms—best aligns with current practice for managing moderate to severe pediatric croup.