Table 4.

ROC curves data

	Area	95% CI	P	Cut-off
SVV (%)	0.93	0.80 to 1.06	0.01	67
PPV (%)	0.89	0.70 to 1.07	0.03	41
SPV (mmHg)	0.90	0.74 to 1.05	0.02	22
%SPV (%)	0.92	0.78 to 1.06	0.02	22
Δdown (mmHg)	0.86	0.67 to 1.06	0.04	13

Definition of abbreviations: CI, confidence interval; FL, fluid loading; PPV, pulse pressure variation; SPV, systolic pressure variation; %SPV, (SPV/maximal systolic pressure) × 100; SVV, stroke volume variation.