MCQ Earliest sign of uteroplacental insufficiency on Doppler is?

 

Earliest sign of uteroplacental insufficiency on Doppler is?

A.Diastolic notch

B.Reversal of diastolic flow

C.Blunting of systolic flow

D.Absent mid diastolic flow

Ans:  A. Diastolic notch

➡️The signs of utero-placental insufficiency in increasing order of severity are early/pre diastolic notch,absent diastolic flow and lastly reversal of flow during diastole.

➡️In the given image-Uterine artery waveform in intrauterine growth retardation demonstrating low diastolic flow and an early diastolic notch.