The prospective observational study to assess the association of peri-operative managements with the incidence of postoperative complications in cardiac surgery patients - The prospective observational study to assess the association of peri-operative managements with the incidence of postoperative complications in cardiac surgery patients

We obtained perioperative free hemoglobin(fHb) and haptoglobin(Hp) levels during the study period in adult patients undergoing valvular and aortic surgery requiring cardiopulmonary bypass (CPB). The increase of fHb level and decrease of Hp level had independent associations with post operative AKI. And, we estimated cutoff values were 0.06g/dL at CPB1(1hr after CPB) , 0.12g/dL as preoperative maximum fHb(maxfHb), respectively.