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Evaluating inhaler use technique in COPD patients
Chaicharn Pothirat1, Warawut Chaiwong1, Nittaya Phetsuk1
1Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Summary
Most chronic obstructive pulmonary disease (COPD) patients struggle with inhaler techniques, leading to poor medication delivery. Face-to-face training significantly improves inhaler technique compliance, especially for the pressurized metered-dose inhaler (pMDI).
Area of Science:
- Respiratory Medicine
- Pulmonary Disease Management
- Inhaler Device Technology
Background:
- Poor inhaler technique in COPD patients is linked to reduced medication efficacy and disease control.
- Accurate inhaler use is crucial for effective management of chronic obstructive pulmonary disease.
Purpose of the Study:
- To evaluate the inhalation techniques of COPD patients across various inhaler devices.
- To identify factors influencing correct inhaler device usage in COPD management.
Main Methods:
- A prospective cross-sectional study assessed compliance with four inhaler regimens: pMDI, pMDI with spacer, Accuhaler, and Handihaler.
- Technique compliance was evaluated before and after face-to-face training, with statistical analysis comparing devices and risk factors.
Main Results:
- 74.8% of COPD patients demonstrated incorrect inhaler technique.
- The Handihaler showed the lowest failure rate (42.5%), while pMDI use had the highest odds of failure.
- Low education level was a significant risk factor for incorrect technique (aOR 4.1).
Conclusions:
- Inhalation technique among COPD patients is largely unsatisfactory without training, particularly for those with lower education.
- The Handihaler device exhibited the lowest technique failure rates.
- Face-to-face training substantially improved inhaler technique compliance, especially for pMDI use.
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