Study to Evaluate Satisfaction with the Inhalation Device Used by Patients with Asthma or Chronic Obstructive Pulmonary Disease and the Association with Adherence and Disease Control

Background: Adherence to pharmacological treatment is a fundamental factor in the control of chronic respiratory disease such as asthma and chronic obstructive disease (COPD). Poor disease control is associated with increased morbidity and mortality and higher health cost. Methods: A multicenter, observational cross-sectional study was performed. Four hundred patientes with diagnosis of asthma or COPD were recruited from 18 Spanish hospitals. A total of 15 different inhalation devices used in yhe treatment of these diseases and grouped depending on inhaler adherence, satisfaction, and disease control. Results: Satisfaction was lower when adherence was intermediate or poor than when it was good (good vs. intermediate p=0.035;poor vs. good p=0.009). Multivariate analyses of feeling of satisfaction with inhaler respiratory diseases and for the Asthma Control Test in the case of asthma, but not for COPD. Conclusions: High degree of satisfaction with the inhalers was observed in asthma and COPD patientes, with no difference among device types. A positive association was found between satisfaction and both adherence and the degree of disease control in asthma, but not in COPD. Nevertheless, further investigations are needed to better clarify these associations