Objective:

To explore the value of spectral Doppler ultrasound combined with three-dimensional power Doppler ultrasound in evaluating placental function in the patients with pregnancy-induced hypertension (PIH).

Methods:

A total of 161 pregnant women with gestational age of 30-42 we

eks were selected. Among them

101 were enrolled in PIH group (19 cases of severe preeclampsia and 82 cases of preeclampsia) and 60 in control group (normal pregnant women). Fetal umbilical artery blood flow parameters such as systolic velocity/diastolic velocity (S/D)

resistance index (RI)

pulsatile index (PI)

fetal middle cerebral artery parameters (S/D

RI

PI) and maternal uterine artery blood flow parameters (S/D

RI

PI) were measured by spectral Doppler ultrasound. Three-dimensional power Doppler ultrasound was used to monitor placental villus blood flow. Placental blood flow perfusion parameters such as vascularization index (VI)

flow index (FI)

vascularization flow index (VFI) were collected.

Results:

In PIH group fetal umbilical artery blood flow parameters (S/D

RI

PI) and the uterine artery blood flow parameters (S/D

RI

PI) increased significantly

while placental blood flow perfusion parameters (VI

FI

VFI) decreased significantly

and there were slight changes in fetal middle cerebral artery blood flow parameters without significant difference.

Conclusion:

Fetal umbilical artery blood flow parameters

uterine artery blood flow parameters and placental perfusion parameters can reflect the placental blood flow perfusion in PIH patients.