Evaluation of the prevalence and effectiveness of education on metered-dose inhaler technique

This study examined aspects of MDI use, including the prevalence of MDI misuse, in adults using objective and subjective assessments. Objective assessment of MDI technique was undertaken using the Vitalograph AIM device; participants were instructed to use the AIM as they would typically use their inhaler, with the device collecting data on inspiratory flow at the start of inspiration, timing of firing of the MDI simulator, inspiratory flow during the inspiration, inhalation time, and breath-hold time.