Nebulized epinephrine is used for which condition?

• A. Croup
• B. Asthma attack
• C. Anaphylaxis
• D. Pneumonia

Answer: (A)

Nebulized epinephrine is used in croup because its rapid alpha-adrenergic effect constricts the swollen mucosa in the subglottic airway, which quickly reduces airway edema and improves airway diameter. This produces prompt relief of stridor and work of breathing in moderate to severe croup, with the effect fading as the drug wears off, so patients are monitored for potential rebound swelling. It is not a standard treatment for pneumonia, which is managed with fluids, antibiotics if indicated, and supportive care. For asthma, the usual approach is inhaled bronchodilators such as albuterol and steroids rather than nebulized epinephrine, and for anaphylaxis the priority is systemic epinephrine given intramuscularly or intravenously, not nebulized.