Abstract

Monitoring of pregnancies with fetal growth restriction (FGR) is associated with timing of delivery, especially in early preterm pregnancy<32>95.‰ or absence/regurgitation of A-wave and pulsatile umbilical vein (UV) blood flow brings challenges. The incidence of abnormal fetal heart rate monitoring (FHRM) was higher with NMM and NAA, but the difference was not statistically significant. ROC calculated by defining bad results as NMM and good results as NAA and NWMAA showed the highest sensitivity in DV PIi. ROCs calculated by NMM and NAA defined bad results, while good NWMAA results had the highest sensitivity with MCA PI. In early fetal growth restriction, normal cerebral blood flow is a strong indicator of favorable outcome, and pathologic venous blood flow is associated with poor outcome. If fetal growth is restricted before 32 weeks of gestation, individualized pregnancy management is the best option for optimal timing of delivery.