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Related Experiment Video

Updated: Jun 5, 2025

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
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Prospective Randomized Study on Switching Triple Inhaler Therapy in COPD from Multiple Inhaler Devices to a Single

Wang Chun Kwok1, Ting Fung Ma2, Chung Ki Tsui1

  • 1Department of Medicine, Queen Mary Hospital, University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China.

Chronic Obstructive Pulmonary Diseases (Miami, Fla.)
|December 16, 2024
PubMed
Summary
This summary is machine-generated.

Switching to single inhaler triple therapy (SITT) from multiple inhaler triple therapy (MITT) in Chinese patients with chronic obstructive pulmonary disease (COPD) resulted in fewer inhaler errors and improved medication adherence. This suggests SITT may be a beneficial alternative for managing COPD in this population.

Keywords:
COPDmultiple inhaler triple therapysingle inhaler triple therapytriple therapy

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Area of Science:

  • Pulmonary Medicine
  • Pharmacology
  • Clinical Trials

Background:

  • Triple therapy (inhaled corticosteroids and dual bronchodilators) is recommended for COPD patients with exacerbations and eosinophilia.
  • Administration options include single inhaler triple therapy (SITT) and multiple inhaler triple therapy (MITT).
  • Evidence on SITT benefits over MITT, particularly switching from MITT to SITT in Chinese populations, is limited.

Purpose of the Study:

  • To investigate the effects of switching from MITT to SITT in Chinese COPD patients.
  • To evaluate critical inhaler errors, dyspnea (mMRC scale), medication adherence (MARS-A), and patient satisfaction.

Main Methods:

  • An open-label, double-arm clinical trial involving 70 Chinese COPD patients.
  • Patients were switched from existing MITT regimens to SITT.
  • Evaluated outcomes included inhaler errors, mMRC dyspnea scale, MARS-A score, and satisfaction score.

Main Results:

  • The SITT group demonstrated significantly fewer critical inhaler errors at both first and second visits compared to the MITT group (p=0.038 and p=0.007, respectively).
  • Patients switching to SITT showed a significant increase in Medication Adherence Report Scale for Asthma (MARS-A) scores (+3.76±7.48) versus a decrease in the MITT group (-1.27±7.76) (p=0.008).
  • A higher proportion of patients in the SITT group (59.5%) experienced improved adherence compared to the MITT group (24.2%), with an adjusted odds ratio of 6.23 favoring SITT (p=0.007).

Conclusions:

  • Switching from MITT to SITT in Chinese COPD patients is associated with a reduction in critical inhaler errors.
  • SITT demonstrated improved medication adherence, as indicated by higher MARS-A scores, compared to MITT.
  • These findings suggest potential benefits of SITT over MITT for managing COPD in the Chinese population.