Figure 3. The relations between the skin vasomotor reflex (SVmR) amplitude and the SBP change under two end-tidal sevoflurane concentrations in study 2 showed a weak but significant correlation (1 MAC group, r²= 0.26, P < 0.01 [lower panel]; 1.3 MAC group, r²= 0.29, P < 0.05 [upper panel]). Closed circles, open circles, and lozenges indicate the electrostimulation of 40, 50, and 60 mA, respectively