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Table 3 Diagnostic performance of carotid FTc and ΔVpeak to predict the ability of SVV ≥ 13%

From: Correlation of carotid corrected flow time and respirophasic variation in blood flow peak velocity with stroke volume variation in elderly patients under general anaesthesia

Parameter AUROC
(95% CI)
P-value Best Cut-off grey zone Patients in grey zone(%) Sensitivity
(%)
Specificity
(%)
Youden
index
FTc 0.811(0.721–0.900)  < 0.01 340.74 331.44–345.90 47.4 76.8 80.5 0.57
ΔVpeak 0.781(0.686–0.875)  < 0.01 11.69 9.97–13.42 48.5 78 67.9 0.48
  1. AUROC Area under the receiver operating characteristic curve, FTc Carotid corrected flow time, ΔVpeak Respirophasic variation in carotid artery blood flow peak velocity