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Fig. 2 | BMC Anesthesiology

Fig. 2

From: Prediction of fluid responsiveness in mechanically ventilated cardiac surgical patients: the performance of seven different functional hemodynamic parameters

Fig. 2

Gray zone determination for the seven functional hemodynamic parameters.Two-graph ROC curves: sensitivity (Se), specificity (Sp), inconclusive zone (Inc area) = gray zone, represented as hatched rectangles. Test results with a sensitivity and specificity below 90% are considered to be in the inconclusive zone. Technologies used: Philips Intellivue (A), FloTrac (B), PiCCOplus (C, D), LiDCOrapid (E, F), and Masimo pulse oximeter (G). PPV = Pulse pressure variation, PVI = Pleth variability index, SVV = Stroke volume variation

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