[Prognostic role of new biomarkers in off-pump coronary artery bypass surgery]

José M Arribas-Leal, Domingo A Pascual-Figal, Pedro L Tornel-Osorio, Juan A Ruipérez-Abizanda, Mariano Valdés-Chavarri, Ramón Arcas-Meca
Revista Española de Cardiología 2006, 59 (3): 280-3
The value of biomarkers of myocardial damage or inflammation in off-pump coronary artery bypass (OPCAB) surgery has not yet been established. In a prospective study of 51 consecutive patients scheduled for elective OPCAB surgery, preoperative levels of troponin T, C-reactive protein, interleukin-6 and tumor necrosis factor-alpha were determined. The primary endpoint was the combination of cardiac death or acute myocardial infarction (AMI) within 30 days. Seven patients (14%) presented with an adverse event: three cardiac deaths and six AMIs. Univariate analysis identified the following adverse event predictors: renal failure (50% vs 11%, P=.028), left ventricular ejection fraction 0.10 ng/dL (43% vs 9%, P=.016), and EuroSCORE rating (7.6 [2.5] VS. 5.2 [2.6], P=.031). A preoperative troponin-T level > 0.10 ng/dL (P=.03) was the only independent adverse event predictor. No significant differences were found with biomarkers of inflammation (P.05). The presence of a preoperative troponin-T level > 0.10 ng/dL is associated with a higher risk of cardiac death or AMI in patients undergoing OPCAB surgery.

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