Figure 3From: Evaluation of the PaO2/FiO2 ratio after cardiac surgery as a predictor of outcome during hospital stay Percentage of exitus and stay in PaO 2 /FiO 2 ratio <202 group and PaO 2 /FiO 2 ratio 202–241 group, compared to PaO 2 /FiO 2 ratio >241 group. Back to article page