Study of Triple Vessel Wave Pattern by Doppler Studies in Low Risk and High Risk Pregnancies and Perinatal Outcome

Role of Triple vessel umbilical, middle cerebral and uterine artery wave pattern by color Doppler study in low and high risk pregnancies in relation to perinatal outcome was studied. Fifty (50) patients with gestational age between 31-40 weeks who were diagnosed to have severe preeclampsia, preeclampsia with IUGR were studied and subjected to color Doppler ultrasonography. Findings of Doppler studies were correlated with the adverse perinatal outcomes. Acceptable wave forms were obtained from uterine artery, MCA and UA in all these cases. All the cases were followed up for the perinatal outcome. Cerebro placental ratio had higher sensitivity (95%) and NPV (85%) than UAPI (Sensitivity 66.66%, NPV 79.40%) and MCA PI (Sensitivity 83.33%, NPV 77.27%), UAPI had higher specificity (93.10%) and PPV (87.5%) compared to cerebro placental ratio (Specificity 87%, PPV 88%) and MCAPI (Specificity 85%, PPV 89.28%).