Table 6—

Treatment of acute viral croup

MedicineQuality of evidenceRecommendation
Humidified airHumidified air has no effect on the course of croup (high)Humidified air should not be used
Systemic steroidsSystemic steroids are highly effective on the course of croup (high)Oral corticosteroids should be used
Inhaled steroidsInhaled steroids are highly effective on the course of croup (high)Inhaled steroids should be used (they are not superior to oral corticosteroids)
EpinephrineNebulised epinephrine is highly effective on the course of croup (high)Nebulised epinephrine should be used for temporary relief of symptoms
HelioxHeliox has no effect on the course of croup (moderate)Heliox should not be used