Fig. 1

The measurements description of spirometry. IRV: inspiratory reserve volume, TV tidal volume, ERV: expiratory reserve volume, VC: vital capacity, RV: reserve volume, FEV1: forced expiratory volume in 1Â s, FVC: forced vital capacity
The measurements description of spirometry. IRV: inspiratory reserve volume, TV tidal volume, ERV: expiratory reserve volume, VC: vital capacity, RV: reserve volume, FEV1: forced expiratory volume in 1Â s, FVC: forced vital capacity