Fetal Femoral Artery Doppler Evaluation in Late-Onset Fetal Growth Restriction: A Case-Control Study.

Objective: To compare the femoral artery and other ultrasonographic Doppler measurements between fetuses with late-onset fetal growth restriction and uncomplicated fetuses. Material and Method: This prospective cohort study was conducted with 168 patients, including 83 pregnancies presenting with late-onset fetal growth restriction and 85 uncomplicated control pregnancies at similar gestational weeks. The study group was further divided into two according to the neonatal intensive care unit requirements. Demographic characteristics, obstetric characteristics, femoral artery and other ultrasonographic Doppler measurements, and pregnancy outcomes were compared between the groups. Results: Uterine artery pulsatility index, umbilical artery systolic/diastolic ratio, and peak systolic velocity of the middle cerebral artery were similar between the study and control groups. However, while the middle cerebral artery pulsatility index was significantly lower in the study group, the femoral artery pulsatility index value was significantly higher (p<0.001 and p=0.002, respectively). When the two subgroups of the study group were compared according to the neonatal intensive care unit requirements, their femoral artery and other Doppler measurements were similar. Estimated fetal weight was statistically lower in the group requiring neonatal intensive care unit (p=0.033). Conclusion: The femoral artery pulsatility index measurement was higher in the late-onset fetal growth restriction cases than in the healthy controls. The Doppler examination of the femoral artery was not found to be effective in demonstrating adverse perinatal outcomes. [ABSTRACT FROM AUTHOR]