Changes in myocardial injury indexes in patients postoperatively and 1 d postoperatively. A. Comparison of changes in H-FABP. B. Comparison of CK-MB changes. C. Comparison of cTnI changes. Note: cTnl, Cardiac troponin I; H-FABP, heart-type fatty acid binding protein; CK-MB, creatine kinase isoenzyme; nsP > 0.05, *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001.