Table III.

Bispectral index (BIS) values

Time	Group L (n = 26)	Group N (n = 26)	P-value
T0	97.61	97.30	0.513
T1	39.73	36.57	0.167
T2	37.92	37.11	0.690
T3	35.73	35.96	0.889
T4	37.61	36.38	0.556
T5	37.61	35.19	0.257
T6	40.61	41.15	0.873
T7	92.50*	86.65*	0.001*

Group L – low flow group, Group N – normal flow group. T₀ – before anesthesia, T₁ – 10 min after intubation, T₂ – 5 min before insufflation of CO₂, T₃ – 5 min after insufflation of CO₂, T₄ – 5 min after reverse Trendelenburg position, T₅ – 5 min after supine position, T₆ – 5 min after desufflation of CO₂, T₇ – 15 min after awakening from anesthesia.

^*When compared with each one (p < 0.05).