Study population and data collection
coagulopathy
END-STAGE RENAL DISEASE, MAY, COAGULOPATHY
This study used data from the PROTECT trial (In this study, we included 309 patients who received elective abdominal surgery between May 18, 2016, and December 3, 2020, in the PUMCH PROTECT trial, excluding 124 patients whose final core temperature was between 35.8 and 37.7°C, and 431 patients who were transferred to the ICU after surgery with tracheal intubation. The inclusion criteria for PROTECT were also applicable, including age ≥ 45 years, having at least one cardiovascular risk factor, and receiving major non-cardiac surgery that lasted between 2 to 6 h under general anesthesia. Patients were excluded if they had coagulopathy, end-stage renal disease requiring dialysis, body mass index exceeding 30 kg/mThe baseline data collected from the Anesthesia Information Management Systems (AIMS) included the duration of the procedure (time from OR admission to the end of surgery), extubation time (time from the end of surgery to extubation), turnover time (time from extubation to the admission for the next procedure in the same OR), and the incidence of prolonged extubation. Prolonged extubation is defined as a 15-min or longer interval from the end of surgery to the removal of the tracheal tube (