Table 1— Inspiratory positive airway pressure 10/expiratory positive airway pressure 4

Oxygen flow rate in L·min–1

PO2 at site 1

PO2 at site 2

PO2 at site 3

PO2 at site 4

1 1.66±0.57 1.82±0.51 1.41±0.41 3.03±0.41
5 5.92±2.02 6.76±1.94 5.02±1.61 10.3±1.93
15 18.31±5.80 17.46±5.65 10.81±2.62 26.03±5.69

Data are presented as mean±SD. PO2: oxygen arterial pressure.