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Resting V′E/V′CO2 adds to inspiratory capacity to predict the burden of exertional dyspnoea in COPD

J. Alberto Neder, Danilo C. Berton, Mathieu Marillier, Anne-Catherine Bernard, Juan Pablo de Torres, Denis E. O'Donnell
European Respiratory Journal 2020 56: 1902434; DOI: 10.1183/13993003.02434-2019
J. Alberto Neder
1Laboratory of Clinical Exercise Physiology and Respiratory Investigation Unit, Division of Respirology, Kingston Health Science Center, Queen's University, Kingston, ON, Canada
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  • For correspondence: alberto.neder@queensu.ca
Danilo C. Berton
2Division of Respirology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Mathieu Marillier
1Laboratory of Clinical Exercise Physiology and Respiratory Investigation Unit, Division of Respirology, Kingston Health Science Center, Queen's University, Kingston, ON, Canada
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Anne-Catherine Bernard
1Laboratory of Clinical Exercise Physiology and Respiratory Investigation Unit, Division of Respirology, Kingston Health Science Center, Queen's University, Kingston, ON, Canada
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Juan Pablo de Torres
1Laboratory of Clinical Exercise Physiology and Respiratory Investigation Unit, Division of Respirology, Kingston Health Science Center, Queen's University, Kingston, ON, Canada
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Denis E. O'Donnell
1Laboratory of Clinical Exercise Physiology and Respiratory Investigation Unit, Division of Respirology, Kingston Health Science Center, Queen's University, Kingston, ON, Canada
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Extract

Exertional dyspnoea is a cardinal symptom of patients with COPD [1]. Incremental cardiopulmonary exercise testing (CPET), in particular, might provide useful mechanistic insights into the genesis of this distressing symptom. More recently, there is growing evidence that ventilatory inefficiency (high ventilation (V′E)/carbon dioxide output (V′CO2) nadir) coupled with assessment of operating lung volumes (peak tidal volume (VT)/dynamic inspiratory capacity (ICdyn)) are key to uncover the origins and consequences of exertional dyspnoea in COPD [2].

Abstract

A novel variable (V′E/V′CO2rest) adds important information to ICrest in predicting the severity of exertional dyspnoea across the spectrum of COPD severity http://bit.ly/3cS9jNi

Footnotes

  • Conflict of interest: J.A. Neder has nothing to disclose.

  • Conflict of interest: D.C. Berton has nothing to disclose.

  • Conflict of interest: M. Marillier has nothing to disclose.

  • Conflict of interest: A-C. Bernard has nothing to disclose.

  • Conflict of interest: J.P. de Torres has nothing to disclose.

  • Conflict of interest: D.E. O'Donnell has nothing to disclose.

  • Received December 18, 2019.
  • Accepted February 24, 2020.
  • Copyright ©ERS 2020
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Resting V′E/V′CO2 adds to inspiratory capacity to predict the burden of exertional dyspnoea in COPD
J. Alberto Neder, Danilo C. Berton, Mathieu Marillier, Anne-Catherine Bernard, Juan Pablo de Torres, Denis E. O'Donnell
European Respiratory Journal Jul 2020, 56 (1) 1902434; DOI: 10.1183/13993003.02434-2019

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Resting V′E/V′CO2 adds to inspiratory capacity to predict the burden of exertional dyspnoea in COPD
J. Alberto Neder, Danilo C. Berton, Mathieu Marillier, Anne-Catherine Bernard, Juan Pablo de Torres, Denis E. O'Donnell
European Respiratory Journal Jul 2020, 56 (1) 1902434; DOI: 10.1183/13993003.02434-2019
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