Table 3.
Receiver operating characteristics (ROC) curve statistic for predicting changes > 15 % in SVI (fluid responders) at normal intra-abdominal pressure (A) and during intra-abdominal hypertension (B)
| A | ||||||
|---|---|---|---|---|---|---|
| AUC | 95 % CI | p-value | Best cut point | Sensitivity | Specificity | |
| VT 6 ml/kg | ||||||
| SVV | 70 % | 49–92 | 0.111 | 3.5 | 75 % | 56 % |
| PPV | 79 % | 61–98 | 0.022 | 4.5 | 75 % | 81 % |
| VT 12 ml/kg | ||||||
| SVV | 82 % | 65–99 | 0.012 | 8.5 | 88 % | 75 % |
| PPV | 95 % | 87–100 | <0.001 | 9.5 | 75 % | 94 % |
| VT 18 ml/kg | ||||||
| SVV | 82 % | 65–99 | 0.013 | 8.5 | 88 % | 63 % |
| PPV | 89 % | 76–100 | 0.002 | 10 | 88 % | 81 % |
| B | ||||||
| VT 6 ml/kg | ||||||
| SVV | 64 % | 33–95 | 0.445 | 5.5 | 50 % | 63 % |
| PPV | 67 % | 35–99 | 0.35 | 5.5 | 75 % | 38 % |
| VT 12 ml/kg | ||||||
| SVV | 78 % | 48–100 | 0.126 | 15 | 75 % | 88 % |
| PPV | 78 % | 51–100 | 0.126 | 14.5 | 75 % | 75 % |
| VT 18 ml/kg | ||||||
| SVV | 84 % | 61–100 | 0.062 | 18.5 | 50 % | 75 % |
| PPV | 73 % | 44–100 | 0.203 | 24 | 75 % | 63 % |
(VT, Tidal Volume, SVV stroke volume variation, PPV Pulse pressure variation, AUC area under the curve)