Anesthesiologists are involved: Anesthesiologists are involved

141 patients received massive blood transfusions (20 U or more of packed red blood cells (PRBC) during preoperative and intraoperative resuscitation

• 141 patients received massive blood transfusions (20 U or more of packed red blood cells (PRBC) during preoperative and intraoperative resuscitation

• Eleven variables were significantly different: aortic clamping for control of BP, use of inotropic drugs, time with systolic BP less than 90 mm Hg, time in the OR, temperature lower than 34°C, urine output, pH less than 7.0, Pao2/Flo2 ratio less than 150, Paco2 higher than 50 mm Hg, potassium greater than 6 mM/L, and calcium less than 2 mM/L