GPT and liver failure: Compared with the first day after operation, the TB (reference value: 4–23.0 μmol/L), PT (reference value: 11–13 s) and ALB (reference value: 40–55 g/L) did not change significantly on the seventh day, while ALT (reference value: 9–50 U/L) and AST (reference value: 15–40 U/L) decreased significantly, and there was no patient suffered from postoperative liver failure.