Role of Antenatal Dexamethasone Administration on Fetal Doppler Velocimetry

Abstract

Aim: The aim of this study was assess the change in fetal and uteroplacental circulation following
antenatal dexamethasone administration to high-risk of preterm labor pregnant women.
Patients and Methods: Prospective study was conducted between January and May 2021 in Tikrit city
at Salahadeen General Hospital /genecology and obstetrics department The study included 30 pregnant
women with high risk of preterm labor with gestational age from 24 to 34 weeks. Doppler Study were
performed just before dexamethasone administration and will be repeated 24 h after completion of the
dexamethasone course.
Results: The study showed the highest means of Fetal MCA pulsitility index. levels were recorded
in women who at risk of preterm uterine contractions, placenta previa and pre-eclampsia respectively
before dexamethasone administration as compared with the same groups at 24 hour after dexamethasone
administration (P<0.05). The study showed the highest means of Fetal MCA resistive index levels were
recorded in women with preterm uterine contractions, placenta previa and pre-eclampsia respectively
before dexamethasone administration as compared with the same groups 24 hour after dexamethasone
administration (P<0.05). The study showed the highest means of Uterine artery pulsitility index.
levels were observed in women with preterm uterine contractions, placenta previa and pre-eclampsia
respectively before dexamethasone administration as compared with the same groups 24 hour after
dexamethasone administration.