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Research ArticleOriginal Research

Inhaled Medication Use in Smokers With Normal Spirometry

Nicholas R Arnold, Emily S Wan, Craig P Hersh, Andrei Schwartz, Greg Kinney, Kendra Young, John Hokanson, Elizabeth A Regan, Alejandro P Comellas and Spyridon Fortis
Respiratory Care February 2021, respcare.08016; DOI: https://doi.org/10.4187/respcare.08016
Nicholas R Arnold
Department of Internal Medicine, Division of General Internal Medicine, University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa.
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Emily S Wan
Channing Laboratory and Pulmonary and Critical Care Division, Brigham and Women's Hospital, Boston, Massachusetts.
Jamaica Plain Campus, VA Boston Health Care System, Boston, Massachusetts.
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Craig P Hersh
Channing Laboratory and Pulmonary and Critical Care Division, Brigham and Women's Hospital, Boston, Massachusetts.
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Andrei Schwartz
Department of Internal Medicine, Division of General Internal Medicine, University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa.
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Greg Kinney
Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado.
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Kendra Young
Department of Biostatistics and Informatics, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado.
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John Hokanson
Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado.
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Elizabeth A Regan
Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado.
Department of Medicine, Division of Rheumatology, National Jewish Health, Denver, Colorado.
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Alejandro P Comellas
Division of Pulmonary, Critical Care and Occupational Medicine, University of Iowa Hospital and Clinics, Iowa City, Iowa.
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Spyridon Fortis
Division of Pulmonary, Critical Care and Occupational Medicine, University of Iowa Hospital and Clinics, Iowa City, Iowa.
Center for Access & Delivery Research & Evaluation (CADRE), Iowa City VA Health Care System, Iowa City, Iowa.
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  • For correspondence: [email protected]
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Abstract

BACKGROUND: The objective of our study was to identify variables associated with inhaled medication use in smokers with normal spirometry (GOLD-0) and to examine the association of inhaled medication use with development of exacerbations and obstructive spirometry in the future.

METHODS: We performed a retrospective multivariable analysis of GOLD-0 subjects identified in data from the COPDGene study to examine factors associated with medication use. Five categories were identified: (1) no medications, (2) short-acting bronchodilator, (3) long-acting bronchodilator; long-acting muscarinic antagonists and/or long-acting β agonist, (4) inhaled corticosteroids (ICS) with or without long-acting bronchodilator, and (5) dual bronchodilator with ICS. Sensitivity analysis was performed excluding subjects with history of asthma. We also evaluated whether long-acting inhaled medication use was associated with exacerbations and obstructive spirometry at the follow-up visit 5 y after enrollment.

RESULTS: Of 4,303 GOLD-0 subjects within the analysis, 541 of them (12.6%) received inhaled medications. Of these, 259 (6%) were using long-acting inhaled medications and 282 (6.6%) were taking short-acting bronchodilator. Female sex (odds ratio [OR] 1.47, P = .003), numerous medical comorbidities, radiographic emphysema (OR 2.22, P = .02), chronic bronchitis (OR 1.77, P < .001), dyspnea (OR 2.24, P < .001), asthma history (OR 15.56, P < .001), prior exacerbation (OR 8.45, P < .001), and 6-min walk distance (OR 0.9, P < .001) were associated with medication use. Minimal changes were noted in a sensitivity analysis. Additionally, inhaled medications were associated with increased total (incidence rate ratio 2.83, P < .001) and severe respiratory exacerbations (incidence rate ratio 3.64, P < .001) and presence of obstructive spirometry (OR 2.83, P = .002) at follow-up.

CONCLUSIONS: Respiratory symptoms, history of asthma, and radiographic emphysema were associated with inhaled medication use in smokers with normal spirometry. These individuals were more likely to develop obstructive spirometry, which suggests that health care providers may be able to identify obstructive lung disease prior to meeting the current criteria for COPD.

  • COPD
  • empiric treatment
  • smoking
  • respiratory function tests
  • spirometry

Footnotes

  • Correspondence: Spyridon Fortis MD, University of Iowa Hospital and Clinics, Internal Medicine, 200 Hawkins Dr, C33 GH, Iowa City, IA 52242. E-mail: spyridon-fortis{at}uiowa.edu
  • Copyright © 2021 by Daedalus Enterprises

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Respiratory Care: 66 (3)
Respiratory Care
Vol. 66, Issue 3
1 Mar 2021
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Inhaled Medication Use in Smokers With Normal Spirometry
Nicholas R Arnold, Emily S Wan, Craig P Hersh, Andrei Schwartz, Greg Kinney, Kendra Young, John Hokanson, Elizabeth A Regan, Alejandro P Comellas, Spyridon Fortis
Respiratory Care Feb 2021, respcare.08016; DOI: 10.4187/respcare.08016

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Inhaled Medication Use in Smokers With Normal Spirometry
Nicholas R Arnold, Emily S Wan, Craig P Hersh, Andrei Schwartz, Greg Kinney, Kendra Young, John Hokanson, Elizabeth A Regan, Alejandro P Comellas, Spyridon Fortis
Respiratory Care Feb 2021, respcare.08016; DOI: 10.4187/respcare.08016
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Keywords

  • COPD
  • empiric treatment
  • smoking
  • respiratory function tests
  • spirometry

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