The Effects of Individualized Oxygen Dynamic on Prognosis of Patients With High-risk Cardiac Surgery

mean artery pressure declined with less than 20% of baseline

BIS 45-60 before and after CPB; and BIS 40-45 during CPB

Brain oxygen saturation declined with less than 20% of baseline

receiving standard measures to achieve a heart rate (HR) in the range of 60-100 beats/min, central venous oxygen saturation (Svco2) higher than 70%, lactate level lower than 3 mmol/L, hematocrit value higher than 28%, and urinary output higher than 0.5 mL/kg/hr.