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Differences in Adherence to Common Inhaled Medications in COPD.
Kirsten Koehorst-ter Huurne1, Kris Movig2, Paul van der Valk1
1a Department of Pulmonary Medicine , Medisch Spectrum Twente , Enschede , the Netherlands.
COPD
|March 17, 2015
Summary
Patient adherence to inhaled medications for chronic obstructive pulmonary disease (COPD) varies significantly by drug. Once-daily tiotropium and ciclesonide demonstrated the highest adherence rates in this study.
Area of Science:
- Pulmonary Medicine
- Pharmacology
- Patient Adherence Research
Background:
- Effective management of chronic obstructive pulmonary disease (COPD) relies heavily on consistent patient adherence to prescribed inhaled medications.
- Suboptimal adherence to inhaled therapies is a significant barrier to achieving treatment goals and can lead to disease exacerbations and increased healthcare costs.
Purpose of the Study:
- To investigate and compare adherence rates across various commonly prescribed inhaled medications used in COPD management.
- To identify specific medications associated with higher or lower adherence patterns.
- To explore the relationship between medication adherence and patient lung function.
Main Methods:
- A 3-year prospective study (COMIC cohort) involving 795 COPD patients.
- Pharmacy records were used to assess medication adherence over 1379 medication periods.
- Adherence was categorized as good (≥75-≤125%), suboptimal (≥50-<75%), underuse (<50%), or overuse (>125%).
Main Results:
- Good adherence percentages varied widely, from 43.2% for beclomethasone to 75.8% for tiotropium.
- Increased risks of suboptimal adherence, underuse, and overuse were observed with specific medications compared to tiotropium.
- Inhalation medication adherence showed an inverse relationship with patient lung function.
Conclusions:
- Medication adherence in COPD is influenced by the specific inhaled drug prescribed.
- Once-daily medications, such as tiotropium and ciclesonide, exhibited the highest rates of good adherence.
- The study did not support the hypothesis that combination inhalers improve adherence; further research into medication-based adherence improvement strategies is warranted.
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