The Journal of thoracic and cardiovascular surgery
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J. Thorac. Cardiovasc. Surg. · Oct 2009
Preoperative anemia in patients undergoing coronary artery bypass grafting predicts acute kidney injury.
Recent authoritative studies suggested that low preoperative hemoglobin concentration may affect cardiac surgery outcomes. This study aimed, primarily, to investigate whether preoperative anemia is an independent determinant of adverse events after coronary artery bypass grafting and, secondarily, to evaluate the potential dose responsiveness between anemia severity and primary end points. ⋯ Preoperative anemia is independently associated with acute kidney injury after coronary artery bypass grafting. Further studies are warranted to determine whether preoperative low hemoglobin concentration is a marker of severity of illness or a modifiable risk factor.