using EuroSCORE II. On the day before surgery, blood samples for the measurement of biomarker levels were collected from each patient. Complete blood count was performed with K 2 -EDTA samples, using a Cobas 6000 electronic counter (Roche, Mannheim, Germany). The plasma levels of cardiac TnT (cTnT) concentrations were measured by the Troponin T hs -STAT (Roche). The endpoint was all-cause death. Patients were followed by direct observation during hospitalization, telephone interviews, or clinic visits for 30 days after the surgery or until death. The study protocol was approved by an institutional review board.Statistical analysis A statistical analysis was performed using SAS version 9.2 (World Headquarters SAS Institute, Cary, North Carolina, United States). Logistic regression was used to assess relationships between variables. The following covariates were investigated for association with the endpoint in a univariate analysis: age, atrial fibrillation, body mass index, chronic obstructive pulmonary disease, CAD, current smoking, EuroSCORE II, hyperlipidemia, hypertension, insulin -dependent diabetes mellitus, left ventricular ejection fraction, New York Heart Association class, peripheral atherosclerosis, previous myocardial infarction, pulmonary blood pressure, history of stroke, tricuspid annulus plane systolic excursion, the levels of bilirubin, creatinine, high -sensitivity C -reactive protein, hs -TnT, hematocrit, hemoglobin, mean corpuscular hemoglobin, and N -terminal pro -B-type natriuretic peptide, glomerular filtration rate, mean corpuscular volume, and platelet and white blood cell counts.