Respiratory variation in carotid peak systolic velocity predicts volume responsiveness in mechanically ventilated patients with septic shock: a prospective cohort study

The Ultrasound Journal

Table 3 Correlations between predictors and the fluid challenge-induced change in the stroke volume index

Variable	Correlation coefficient (95 % CI)	p value	AUROC (95 % CI)	p value
ΔCDPV (%)	0.84 (0.74–0.90)	<0.001	0.88 (0.77–0.95)	<0.001
SVV (%)	0.24 (−0.009–0.47)	0.05	0.72 (0.59–0.83)	0.001
PLR Delta SVI (%)	0.24 (−0.01–0.46)	0.06	0.69 (0.56–0.80)	0.005
PPV (%)	0.02 (−0.23–0.27)	0.08	0.63 (0.49–0.75)	0.007
ΔD-IVC (%)	−0.02 (−0.27–0.23)	0.84	0.54 (0.41–0.67)	0.50
GEDI (ml/m²)	0.02 (−0.23–0.27)	0.85	0.55 (0.41–0.68)	0.48
IVC-d (mm)	0.04 (−0.21–0.29)	0.74	0.52 (0.39–0.65)	0.75
CVP (mmHg)	−0.09 (−0.34–0.16)	0.48	0.52 (0.38–0.65)	0.78

AUROC areas under the receiver operating characteristic curves, ΔCDPV respiratory variation in carotid Doppler peak velocity, SVV stroke volume variation, PLR Delta SVI rise in stroke volume index after passive leg elevation test, PPV pulse pressure variation, ScvO2 oxygen saturation at central venous blood, ΔD-IVC respiratory variation in inferior vena cava diameter, GEDI global end-diastolic index, IVC-d inferior vena cava diameter, CVP central venous pressure