Ductus venosus blood flow detection for fetal right ventricular diastolic function evaluation in hypertensive disorders of pregnancy

Objective To investigate the effect of hypertensive disorders in pregnancy on fetal right ventricular diastolic function by detecting the blood flow parameter of fetal ductus venosus.Methods Ninety-two cases of pregnant women with hypertension were enrolled including 14 cases of severe preeclampsia,26 cases of mild preeclampsia,52 cases of gestational hypertension,and 60 cases of normotensive pregnant women at gestational age were taken as the control.The parameters including pulsatility index,resistance index,pre-load index(PLI) and S/A ratio of ductus venosus in fetus were measured by clolor Dopler.The blood flow parameters in fetal ductus venosus in the severe preeclampsia group were monitored 24 h and 72 h after treatment.Results Compared with the control group,pulsatility index,resistance index,PLI and S/A of ductus venosus in fetus in mild and severe preeclampsia group were significantly increased(P0.05).The parameters in severe preeclampsia group were reduced 24 h and 72 h after treatment(P0.05),while the incidence of the ductus venosus backward wave(type Ⅱ and Ⅲ) was increased compared to mild preeclampsia groups(P0.05).Conclusion The fetal ductus venosus detection can be used for qualitative or quantitative assessment of fetal right ventricular diastolic function,which provides the basis for treatment and prognosis evaluation.