Figure 2.

Oxygen delivery index during surgery and postoperatively. Oxygen delivery index (DO₂I) during surgery and postoperatively for the volume group (●) and the dobutamine group (■). *P < 0.05 versus volume group, ^#P < 0.05 versus baseline. Results presented as the mean and standard error or the mean. 0, preoperative; 1, 30 min intraoperatively; 2, 2 hours intraoperatively; 3, 4 hours intraoperatively; 4, 6 hours intraoperatively; 5, 8 hours intraoperatively; 6, 0 hours postoperatively; 7, 4 hours postoperatively; 8, 8 hours postoperatively; 10, 12 hours postoperatively; 11, 16 hours postoperatively; 12, 24 hours postoperatively.