Which condition is commonly managed with nebulized Epinephrine in infants?

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Nebulized epinephrine is used to rapidly relieve airway swelling in croup. In infants with croup, swelling around the larynx and subglottic space narrows the airway and causes stridor and a barking cough. When inhaled, epinephrine acts on alpha-adrenergic receptors in the airway mucosa, producing vasoconstriction that quickly reduces edema. This opening of the airway improves obstruction within minutes, providing fast relief, though the effect is temporary and patients are typically observed and given further management such as a corticosteroid for longer-lasting benefit.

Asthma in infants is usually treated with bronchodilators like albuterol and anti-inflammatory therapies, not primarily with epinephrine. Pneumonia and bronchitis are infections requiring antibiotics and supportive care rather than vasoconstrictive relief of airway edema.