Children who presented to the ED with severe asthma were eligible to enter the study. Severe asthma was classified as having all four features of respiratory distress (wheezing, sternal retraction, ...

Inhalers have been key to asthma management since the 1950s. The most common, salbutamol, comes in a familiar blue-coloured inhaler (or “puffer”). This kind of “rescue inhaler” brings quick relief ...