Table 3.

Linear regression analyses of pre-interventional parameters versus pre-interentional LDx.

Pre-interventional parameter	Slope	p value
Time from start of bypass to baseline LDx measurement (per min)	0.005	0.253
Cumulative fentanyl dose (per μg/kg)	0.001	0.332
Cumulative dexmedetomidine dose (per μg/kg)	−0.030	0.438
Cumulative isoflurane dose (per %min)	0.001	0.854
Cumulative ketamine dose (per mg/kg)	0.010	0.434
Average mean arterial pressure (per mmHg)	−0.007	0.370

Statistical tests for a slope different from zero were done using a t-statistic.