Retrospective analysis of the effect of inhaler education on improvements in inhaler usage

Various types of inhalation devices have been released, and it is necessary to acquire the skills for using each of them. The factors that have been previously associated with poor inhalator usage include gender, duration of disease, age, and the type of device. However, it is unclear whether these factors also apply to the Japanese population. The number of education sessions needed to acquire inhaler usage skills is also not established.

We performed a retrospective review of the medical records of selected patients and their subjective assessments of their inhaler usage skills between January 2016 and March 2018. The primary outcome was the effect of inhaler education for each inhaler device. The secondary outcomes were the factors affecting the effectiveness of inhaler education, the effects of inhalation education stratified by age, and the number of inhaler education sessions needed to improve inhaler usage skills.

Data from 399 patients were analyzed. Age and the type of delivery device affected the mastery of inhaler usage skills. Approximately half of the patients had acquired inhaler usage skills during baseline evaluation. Approximately 90% of patients acquired inhalation usage skills after two education sessions, regardless of the type of inhalation device. Among the older patients, 35.0% had acquired inhaler usage skills during the baseline evaluation, and 86.8% acquired them after two education sessions.

Inhaler usage skills significantly improved, regardless of the device, after inhalation education, and this was also observed in elderly patients after two education sessions.