The purpose of this study is to evaluate the effect of antenatal corticosteroid administration on umbilical artery Doppler velocimetry measurements in pregnancies complicated by IUGR.

This study was conducted with pregnant women who were likely to have preterm birth and were treated with antenatal corticosteroids. Betamethasone was used as an antenatal corticosteroid. UA Doppler measurements (PI, S/D ratio, RI) before antenatal corticosteroid administration and 24 and 48 hours after the last dose of corticosteroid administration were evaluated in pregnant groups complicated with IUGR and uncomplicated with IUGR and compared with each other.

Inclusion Criteria:

pregnant women who were likely to have preterm delivery and were treated with antenatal corticosteroids.

Exclusion Criteria:

Pregnant women who had complicated pregnancy with fetal anomaly, who had multiple pregnancies, who left their pregnancy follow-up unfinished, and those under 18 years of age were excluded from the study.

Pregnant women treated with antenatal corticosteroid due to a possible preterm delivery were divided into two groups as complicated and uncomplicated with IUGR.