Red Blood Cell Transfusion Is Associated With Troponin Release After Elective Off-Pump Coronary Artery Bypass Surgery

Red blood cell transfusion is associated with increased troponin I release after elective off-pump coronary artery bypass graft surgery independently of hemoglobin and hematocrit nadirs. These findings suggest that prevention of major bleeding requiring blood transfusion may be cardioprotective during coronary surgery. Further studies are needed to verify whether troponin release is affected simply by RBC transfusion or by unstable hemodynamic conditions in presence of mild and severe anemia.