Data acquisition
intraoperative blood loss
INTRAOPERATIVE BLOOD LOSS
In the preoperative operating room, core temperature was measured via the tympanic membrane using an infrared thermometer (Thermoscan 5, Braun, Kronberg, Germany) immediately before and after the intervention. In the operating room, core temperature was measured once via the tympanic membrane with an infrared thermometer (Thermoscan 5 IRT 4520, Braun, Kronberg, Germany) before the anesthesia was induced. After placing the pulmonary artery catheter, core temperature was continuously measured in the pulmonary artery and automatically recorded every 5 min into our electronic anesthesia record. The pulmonary catheter was removed immediately before transferring the patient to intensive care unit based on our center policy.Other data were derived from electronic medical record system. Hemodynamic variables and ventilation-related variables were automatically recorded every 5 min during surgery into our electronic anesthesia record. The amount of intraoperative blood loss was calculated by using a formula designed for liver transplantation