Fig. 3. Percentage change in maximal rate of pressure development (dP/dt^max) with leg elevation before (pre-CPB) and after cardiopulmonary bypass (post-CPB) with the different anesthetic protocols. Before CPB, the response to leg elevation was similar in the four groups. After CPB, leg elevation decreased dP/dt^maxin all groups, except in the SEVO all group. Compared with pre-CPB, this different response was statistically significant in the propofol group but not in the SEVO pre group or the SEVO post group. Data are presented as mean ± sd. * Statistically significant difference with the propofol group (  P < 0.05).