Differentiating False Loss of Resistance from True Loss of Resistance While Performing the Epidural Block with the CompuFlo® Epidural Instrument

Table 1

Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and area under the curve (AUC) concerning the ability of CompuFlo® instrument pressure patterns to differentiate the true loss of resistance from the false loss of resistance.

Sensitivity	0.83
Specificity	0.81
PPV	0.72
NPV	0.89
AUC	0.82