Haemodynamic evolution
Haemodynamic parameters were relatively stable during the procedure in both groups. During the surgical operation, SBP, DBP and MAP followed a descending trend; however, no significant differences were found between the two groups (Fig. Mean arterial pressure (MAP), diastolic blood pressure (DBP), systolic blood pressure (SBP), heart rate (HR) and electromyography (EMG) measurements at different time points from induction. 