3330062 PvO2 PaCO2 > 10 kPa, mixed venous oxygen tension 1 3330055 PvO2 PaO2 and venous oxygen partial pressure 1 3330057 PvO2 PaO2 and venous oxygen tension 1 3330056 PvO2 PaO2 equivalent to a mixed venous oxygen tension 1 3330059 PvO2 PaO2 values greater than 52.1 +/- 4.3 Torr, where 1 3330058 PvO2 PaO2, oxygen delivery, and mixed venous oxygen tension 1 3330061 PvO2 presence of a low mixed venous PO2 1 3330060 PvO2 previously defined relationship between mixed venous PO2 1