Cerebral Oxygen Saturation Monitoring In Cardiac Surgery (COSMICS)

In the intervention group, an alarm threshold below 15% of the baseline rSO2 value will be established. Based on the predetermined algorithm the rSO2 will be maintained at or above 85% of the baseline measurements. If the rSO2 reaches levels below 15% of the baseline values or below 50% in absolute value for over 30 seconds, protocol-based interventions will be performed to restore rSO2 to baseline levels.