Table 1.

Continuous cerebrovascular reactivity indices to be derived.

Index	Signals Correlated	Signal Averaging (sec)e	Pearson Correlation Coefficient Calculation Window (min)d	Index Calculation Update Frequency (sec)
PRx	ICPb and MAPc	10	5	60
PAx	AMP and MAP	10	5	60
RAC	AMP and CPPa	10	5	60
COx	rSO2f and CPP	10	5	60
COx_a	rSO2 and MAP	10	5	60

^aCPP: cerebral perfusion pressure

^bICP: intracranial pressure

^cMAP: mean arterial pressure

^dmin: minute

^esec: seconds

^frSO₂: regional oxygen saturation