Fig. 3
The change of mean arterial pressure (MAP), heart rate (HR), cardiac index (CI), and stroke volume index (SVI) from the baseline till 30 min after SA in three groups of patients (Group C = control group; Group P = phenylephrine group; Group E = ephedrine group). * P < 0.05 with respect to baseline, †1 P < 0.05 between the Group P and Group C, †2 P < 0.05 between the Group E and Group C, †3 P < 0.05 between the Group P and Group E