Glucocorticoid Therapy Impact on the Inflammatory Response and Clinical Evolution in Patients With Severe Bronchiolitis

Patients assigned to experimental group (group 1) will receive iv methylprednisolone 2 mg/kg/day (divided in two doses) doses and/or oral prednisolone 2,5 mg/kg/day (divided in two doses) during 7 days.

Patients assigned to control group (group 2) will receive iv/oral glucose 5% solution as placebo, 2 mg/kg/day (divided in two doses) during 7 days.