Peak concentration of AST, ALT was correlated with duration of anesthesia (AST: r=0.52, p<0.001; ALT: r=0.52, p<0.001), duration of surgery (AST: r=0.53, p<0.001; ALT: r=0.54, p<0.001) and blood loss (AST: r=0.53, p<0.001; ALT: r=0.53, p<0.001).