Figure 4:

Left axis: the mean urinary oxygen partial pressure (PuO2) with 95% confidence intervals during the two intra-operative time periods (cardiopulmonary bypass and post cardiopulmonary bypass) for the patients who developed AKI (orange solid squares) and those who did not (blue solid circles). Right axis: daily serum creatinine measurements with 95% confidence intervals from baseline until post-operative day 7 for patients who developed AKI (orange open squares) and those who did not (blue open circles). P values from comparisons at specific time points for the AKI and non-AKI groups are reported if < 0.05. P values for serum creatinine were adjusted for multiple comparisons using Hommel’s procedure.