Ain-Shams Journal of Anesthesiology

Table 3 The comparison of performances between parameters

From: Prediction of fluid responsiveness in mechanically ventilated patients in surgical intensive care unit by pleth variability index and inferior vena cava diameter

Parameters	CVP	PVI	dIVC
Threshold values	≥ 5 mmHg	> 14%	> 19.42%
Sensitivity (%)	70.83	93.75	79.17
Specificity (%)	47.50	87.50	80
AUC (95% CI)	0.612 (0.502–0.714)	0.955 (0.889–0.988)	0.886 (0.801–0.944)
LR+	1.35	7.50	3.96
LR−	0.61	0.071	0.26
PPV	61.82	90	82.61
NPV	57.58	92.12	76.19
P	0.0648	< 0.0001	< 0.0001

AUC (95% CI) area under ROC curve (95% CI), CVP central venous pressure, dIVC caval index, LR likelihood ratio, NPV negative predictive value, PPV positive predictive value, PVI pleth variability index

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