All are true about antenatal umbilical aery Doppler except?
S/D Ratio of umbilical aery Doppler is increased in smokers. Decreased, absent or reversal of diastolic flow on umbilical aery Doppler suggests fetal IUGR and impending Fetal death. Fetal MCA S/D ratio is normally more than S/D ratio of umbilical aery. Fetal MCA S/D ratio is less than S/D ratio of umbilical aery Doppler in IUGR.