Fig. 3. Secondary outcome parameters in the two groups expressed as the difference between preoperative and postoperative values. (A ) Weight gain at day 1. (B ) Spo2decline at day 1. (C ) Creatinine change at day 3 (mean with 95% confidence interval). Control = control group; Scvo2= central venous oxygen saturation group; Spo2= pulse oximetry saturation.