Why carry out this study?

One of the main difficulties with pressurized metered-dose inhalers (pMDI) is that some patients find it hard to properly use pMDI.

Poor pMDI inhalation technique, especially inhalation at an incorrect inspiratory flow, causes sub-therapeutic effects because of poor lung deposition.

What was learned from the study?

Training devices with smartphone application together with traditional verbal counseling significantly corrects pMDI steps inhalation technique.

It also improves pulmonary function and leads to a significant reduction in the number of inhalation technique mistakes, compared to traditional verbal counseling only.