Table 3 Correlation between regional CBF and monitoring parameters. The discriminative ability of each variable or combination to predict cerebral hypoperfusion (i.e., regional CBF < 35 mL/100 g × min) was evaluated using receiver operating characteristic curves with the corresponding area under the curve (AUROC), and sensitivity, specificity, positive (PPV) and negative predictive value (NPV) were computed
| Â | Correlation with rCBF | AUROC (95% CI) |
|---|---|---|
ICP | r = − 0.27; p = 0.01 | 0.65 (0.53–0.76) |
PbtO2 | r = 0.36; p < 0.01 | 0.75 (0.64–0.85) |
Oxygen ratio | r = 0.57; p < 0.01 | 0.75 (0.63–0.85) |
CPP | r = 0.01; p = 0.92 | 0.57 (0.44–0.70) |
ICP + PbtO2 | – | 0.78 (0.68–0.87) |
ICP + OxR | – | 0.78 (0.68–0.88) |
ICP + PbO2 + oxygen ratio | – | 0.80 (0.70–0.91) |