FIGURE 6.

The linear regression analyses show that the PO₂ values of the AB and ACV (A‐D), as well as the AB and ASV (E‐H) samples, had no correlation during O₂ inhalation at FIO₂ of 0.21 (A,B,E,F) and FlO₂ of 1.0 (C,D,G,H). Thick lines indicate that the two measurements of the AB and ACV, as well as the AB and ASV samples, are identical. AB, arterial blood; ACV, arterialized cephalic venous blood; ASV, arterialized saphenous venous blood; FIO₂, fraction of inspiratory oxygen; PO₂, partial pressure of oxygen; R, correlation coefficient.