Table 2. Oxygenation

Baseline was only tested against Lung Injury. Post hoc  testing was always performed if a significant F ratio for a factor or the interaction of factors was obtained by repeated-measures analysis of variance (*P < 0.05, †P < 0.01, ‡P < 0.001), but only significant differences are marked:§P < 0.05, ∥P < 0.01, #P < 0.001 for within-group differences. and **P < 0.05 for between-group differences (post hoc  Tukey multiple comparison test).

Ḋo²= oxygen delivery, Pao²= arterial oxygen partial pressure, Q^VV/Q^T= venous admixture, Sao²= arterial oxygen saturation, SB−/SB+= airway pressure release ventilation without/with  spontaneous breathing, Svo²= venous oxygen saturation, V̇o²= oxygen consumption.