Table 3 Effectiveness of Doppler US in PE discrimination: accuracy of general Doppler US result by artery and their combinations
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 | |
| Â | Abnormal Doppler US | 50.8 | 75.7 | 78.6 | 46.7 |