Figure 1: Box and Whisker plot of SVR expressed as minimum, maximum,median (line within the box) and 25th and 75th percentiles (error bars).TCI:Target Control Propofol/Fentanyl Infusion; DES: Desflurane. T0:15 min after intubation; T3: during dissection and T5: near end of the surgery.Comparisons with independent t test (t test). Significant changes over time within each group with Repeated measures ANOVA. P<0.01.