On the day before the surgery and on the second postoperative day blood samples were collected for glucose, insulin, triglycerides, albumin, pre-albumin, CRP, and α-1-acid glycoprotein (α-1-GA) assays. The HOMA-IR (Homeostasis Model Assessment-Insulin Resistance) equation was used to assess insulin resistance according to the formula: HOMA-IR = insulin (µU/mL) x glycaemia (mg/dL) / 405. To assess inflammatory activity the PINI (CRP (mg/L) x α-1-GA (mg/L)/ albumin (g/L) x pre-albumin (mg/L) and the CRP/albumin ratio were used.