Use of a Digital Inhaler to Assess COPD Disease Variability and Identify Impending Acute COPD Exacerbations: A Pilot...

Area of Science:

• Pulmonary Medicine
• Digital Health Technology
• Biomedical Engineering

Background:

• Digital inhalers offer remote monitoring capabilities, improving adherence and outcomes in conditions like asthma.
• Limited research exists on using digital inhaler data for predicting acute exacerbations of chronic obstructive pulmonary disease (AECOPDs).

Purpose of the Study:

• To investigate variations in physiologic and inhaler usage metrics captured by a digital inhaler in ambulatory patients with COPD before an AECOPD.

Main Methods:

• A phase 4, open-label, 3-month pilot study involving 40 ambulatory COPD patients using the ProAir Digihaler.
• Monthly COPD assessments and continuous monitoring of inhalation metrics via the digital inhaler.
• Analysis of inhalation data for variations preceding AECOPD events.

Main Results:

• Significant reductions in inhalation volume (1.4L to 1.1L), inhalation duration (1875msec to 1492.1msec), and time to peak (500msec to 376.3msec) were observed within 14 days of an AECOPD (p<0.02).
• No significant changes were noted in peak inspiratory flow (PIF) or daily inhaler usage.
• Data from 9649 inhalations were analyzed.

Conclusions:

• Physiologic data from digital inhalers can serve as a valuable remote monitoring tool.
• Early identification of impending AECOPDs in ambulatory COPD patients is feasible.
• Digital inhalers aid in monitoring COPD disease variability.