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