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Changes in COPD inhaler prescriptions in the United Kingdom, 2000 to 2016

Authors Bloom CI, Elkin SL, Quint JK

Received 8 October 2018

Accepted for publication 28 December 2018

Published 22 January 2019 Volume 2019:14 Pages 279—287


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Editor who approved publication: Dr Richard Russell

Chloe I Bloom,1 SL Elkin,2 JK Quint1

1National Heart and Lung Institute, Imperial College London, London SW3 6LR, UK; 2Department of Respiratory Medicine, Imperial College NHS Trust, London, UK

Background: Over the past two decades, there have been significant changes in the pharmacological management of COPD, due to an explosion of inhaler trials, and timely updation of national and international guidelines. We sought to describe temporal changes in prescribing practices in the United Kingdom, and some of the factors that may have influenced them.
Patients and methods: COPD patients were identified from UK primary care nationally representative electronic healthcare records (Clinical Practice Research Datalink), between 2000 and 2016. Prescription data were described by the three maintenance inhaled medication classes used, inhaled corticosteroids (ICS), long-acting beta agonist (LABA), long-acting muscarinic antagonist (LAMA), and their combinations, dual LABA-ICS, dual LAMA-LABA, or triple therapy LABA-ICS-LAMA. Differing patient characteristics across the six different therapy regimens were measured in 2016.
Results: COPD patients were identified: 187,588 prevalent and incident inhaler users and 169,511 incident inhaler users. Since 2002, LAMA showed increasing popularity, while ICS alone exhibited an inverse trend. Triple therapy prescriptions rapidly increased as the first-line therapy until 2014 when LAMA-LABA prescriptions started to increase. By 2014, 41% of all COPD patients were maintained on triple therapy, and 13% were maintained on LAMA only. Characterizing the patients in 2016 revealed that those on triple therapy were more likely to have more severe disease, yet, over a third of patients on triple therapy had only mild disease.
Conclusion: UK prescribing practices were not in keeping with national guidelines but did appear to align with evidence from major drug trials and updated international guidelines. There has been a huge upsurge in triple therapy but incident data show this trend is beginning to reverse for initial management.

Keywords: COPD, inhalers, UK, prescriptions, electronic healthcare records

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