Fig. 2. Cardiac troponin I concentrations in the four groups before surgery (baseline), at arrival in the intensive care unit (T0), and after 6 (T6), 12 (T12), 24 (T24), and 48 h (T48). Data are presented as mean ± sd. * statistically significant difference with the propofol group ( P < 0.05). In all groups, a transient increase in troponin I concentrations was observed. Only in the SEVO all group, this increase was significantly less than in the propofol group. For the sake of clarity, the sd bars are represented in only one direction.