Integration of dose counters in pressurized metered-dose inhalers for patients with asthma and chronic obstructive pulmonary disease: review of evidence

摘要

Introduction: An important factor responsible for suboptimal treatment in patients with obstructive airway diseases, which is often overlooked, is running out of medication. Addition of a dose counter to a pressurized metered-dose inhaler (pMDI) allows the patient to reliably track number of actuations, identify when the label claim number of actuations has been reached, and when a new inhaler needs to be purchased.