1. a) Arterial partial oxygen pressure (PaO2) and b) PaO2/inspired oxygen fraction (FIO2) ratio as a function of FIO2 in lungs simulated to have only alveolar ventilation/perfusion (V′A/Q′) inequality and no shunt.
a) Arterial partial oxygen pressure (PaO2) and b) PaO2/inspired oxygen fraction (FIO2) ratio as a function of FIO2 in lungs simulated to have only alveolar ventilation/perfusion (V′A/Q′) inequality and no shunt. Note that with moderate to severe inequality, PaO2/FIO2 is far from constant as FIO2 changes.
Peter D. Wagner Eur Respir J 2015;45:
©2015 by European Respiratory Society