Biomarkers of myocardial infarction in patients undergoing gastrointestinal cancer surgery

Objective: The evaluation of innovative biomarkers of myocardial damage in the perioperative period. Methods: Twenty-four patients with gastric or colorectal cancer were studied and samples were collected for the measurement of myoglobin, troponin I (cTnI), creatine kinase isoenzyme MB (CK-MB), glycogen phosphorylase isoenzyme BB (GPBB), carbonic anhydrase III (CA III), fatty acid-binding protein (FABP), and CK presurgery and on the first, seventh, and thirtieth days post-surgery. Results: Troponin I values were unchanged throughout the study period. Myoglobin, GPBB, CA III, and FABP were significantly increased on day 1 after surgery. On the seventh day, GPBB, myoglobin, and FABP were still increased, whereas CK was decreased. Thirty days after surgery no significant variations were observed except a decrease of CK and CA III. Conclusions: These results show cTnI and CK-MB are unaffected by surgery, while the measurement of CA III, FABP, GPBB, and myoglobin might be unsuitable for diagnosing an acute coronary syndrome perioperatively.