We conducted a risk factor analysis for high intraoperative blood loss (IBL) in 555 living donor liver transplantation (LDLT) cases with a simple and objective method of IBL estimation based on the concept of red cell mass (RCM): Lost RCM (mL) = patient's estimated blood volume (mL) × (preoperative hematocrit in % - postoperative hematocrit in %) + (transfused leukocyte-depleted red blood cell in units × 213 × 70%) + (transfused Cell Saver blood in mL × 55%). Analysis of 33 preoperative variables revealed that Model for End-stage Liver Disease (MELD) score, albumin, the presence of ascites, and previous abdominal surgery were correlated with high IBL (lost RCM > 1000 mL) in multivariate logistical regression analysis. In conclusion, we found that MELD score, albumin, the presence of ascites, and previous abdominal surgery were significantly correlated with high IBL during adult LDLT.
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