Figure 5

Time course of low frequency to high frequency components. Time course of low frequency to high frequency components (LF/HF) before and after intubation in E’_Sevo-3% (circle points and solid line), E’_Sevo-4% (square points and broken line) and E’_Sevo-5% (triangle points and dotted line) groups. Data are presented as mean (standard error). T0, before intubation; T1, 30 seconds; T2, 60 seconds; T3, 90 seconds; T4, 120 seconds; and T5, 150 seconds after tracheal intubation. **, p < 0.01 vs. T0; ††, p < 0.01 E’_Sevo-3% vs. E’_Sevo-5%.