Which one of the following regarding antenatal assessment of umbilical aeries by Color Doppler studyis TRUE?
C i.e. The flow velocities & S/D ratio are useful to evaluate high risk pregnancies Colour doppler analysis of umbilical aeries play an impoant role in assessment of high risk fetus (pregnancy)Q.
There is decreased S/D ratio in smoker and nicotine abusing pregnant females
The reduced diastolic flow at term indicates good prognosis
The flow velocities and the S/D ratio are useful to evaluate high risk pregnancies
In otherwise normal pregnancies the increased S/D ratio is normal in smoking females