Table 2: Statistical comparison of oxidative and antioxidative parameters in preoperative, early postoperative, and postoperative periods.

ParametersPreoperative periodEarly postoperative periodPostoperative period

MDA nmol/ml
GPx U/g Hb
GSH µmol/g Hb
CAT k/g Hb
SOD U/g Hb

The letters a and b show statistically different groups.
MDA: malondialdehyde; GPx: glutathione peroxidase; GSH: reduced glutathione; CAT: catalase; SOD: superoxide dismutase.