True about umbilical aery Doppler is: (A) Changes in the flow velocity waveforms of umbilical aery may be impoant in the management of high-risk pregnancies, (B) Absence of end-diastolic flow is normal at term, (C) Maternal smoking decreases SID ratio, (D) Increased diastolic flow indicates worse prognosis
Answer is B. Ans. Absence of end-diastolic flow is normal at term