Acute asthmatic exacerbation in children causes economic burdens both directly and indirectly. The GINA guideline does mention the use of inhaled or oral corticosteroids in the treatment of asthmatic exacerbation, it provides little practical guidance on the use of nebulized corticosteroid.
The reference values of Forced Oscillation Technique (FOT) parameters of the inspiratory and expiratory phase for preschool children have not yet been established.