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Impaired exercise ventilatory efficiency in smokers with low transfer factor but normal spirometry

Gisele Walter Barbosa, J. Alberto Neder, Karina Utida, Denis E. O'Donnell, Paulo de Tarso Müller
European Respiratory Journal 2017 49: 1602511; DOI: 10.1183/13993003.02511-2016
Gisele Walter Barbosa
Laboratory of Respiratory Pathophysiology, Respiratory Division, Dept of Medicine Federal University of Mato Grosso do Sul, Campo Grande, Brazil
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J. Alberto Neder
Laboratory of Clinical Exercise Physiology and Respiratory Investigation Unit, Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University, Kingston, ON, Canada
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Karina Utida
Laboratory of Respiratory Pathophysiology, Respiratory Division, Dept of Medicine Federal University of Mato Grosso do Sul, Campo Grande, Brazil
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Denis E. O'Donnell
Laboratory of Clinical Exercise Physiology and Respiratory Investigation Unit, Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University, Kingston, ON, Canada
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Paulo de Tarso Müller
Laboratory of Respiratory Pathophysiology, Respiratory Division, Dept of Medicine Federal University of Mato Grosso do Sul, Campo Grande, Brazil
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  • For correspondence: paulo.muller@ufms.br
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Extract

It has long been established that severe decrements in transfer factor for carbon monoxide (TLCO) are associated with negative outcomes in patients with chronic obstructive pulmonary disease (COPD), including exertional hypoxaemia and poor exercise tolerance [1]. More recently, exercise capacity has been found to be diminished in smokers both with and without airflow limitation, with mild-to-moderate decrements in TLCO [2–4]. The mechanisms that link reduced TLCO to low exercise capacity in smokers without COPD, even in the absence of increased hypoxic drive or overtly abnormal lung mechanics remain unknown.

Abstract

Ventilatory inefficiency in non-COPD smokers is associated with lower exercise capacity http://ow.ly/Mf7n308Qm5M

Footnotes

  • Conflict of interest: None declared.

  • Received December 11, 2016.
  • Accepted January 11, 2017.
  • Copyright ©ERS 2017
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Impaired exercise ventilatory efficiency in smokers with low transfer factor but normal spirometry
Gisele Walter Barbosa, J. Alberto Neder, Karina Utida, Denis E. O'Donnell, Paulo de Tarso Müller
European Respiratory Journal Mar 2017, 49 (3) 1602511; DOI: 10.1183/13993003.02511-2016

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Impaired exercise ventilatory efficiency in smokers with low transfer factor but normal spirometry
Gisele Walter Barbosa, J. Alberto Neder, Karina Utida, Denis E. O'Donnell, Paulo de Tarso Müller
European Respiratory Journal Mar 2017, 49 (3) 1602511; DOI: 10.1183/13993003.02511-2016
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