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Table 3 Effectiveness of Doppler US in PE discrimination: accuracy of general Doppler US result by artery and their combinations

From: Doppler ultrasound evaluation in preeclampsia

Artery Parameter Sensitivity (%) Specificity (%) PPV(%) PNV(%)
Uterine RI 7.7 94.6 71.4 36.8
N 6.2 100.0 100.0 37.8
RI + PI 13.8 97.3 90.0 39.1
RI + N 4.6 100.0 100.0 37.4
RI + PI + N 7.7 100.0 100.0 38.1
Abnormal Doppler US of uterine artery 44.6 78.4 78.4 44.6
Umbilical RI 1.5 100.0 100.0 36.6
PI 6.2 97.3 80.0 37.1
RI + PI 23.1 94.6 88.2 41.2
Abnormal Doppler US of umbilical artery 49.2 70.3 74.4 44.1
Middle Cerebral RI 10.8 100.0 100.0 38.9
SP 10.8 97.3 87.5 38.3
PI + SP 6.2 97.3 80.0 37.1
RI + PI 1.5 91.9 25.0 34.7
SP + RI + PI 3.1 100.0 100.0 37.0
Abnormal Doppler US of cerebral artery 23.1 81.1 68.2 37.5
  Abnormal Doppler US 50.8 75.7 78.6 46.7
  1. PPV: Predictive positive value. PNV: Predictive negative value.