Figure 2.

Changes in oxygenation between study groups. The figure shows changes in Pao₂/Fio₂ over time. The bars indicate the se. Both agents were associated with improvements in Pao₂/Fio₂ from baseline, and the magnitude of improvement did not differ between groups. Pao₂/Fio₂ was numerically higher at each time point in the iloprost group, although the difference was not statistically significant.