<prompt> On Doppler the most ominous sign indicating fetal compromise is :pulsatility index in umbilical aeryincreased resistance in uterine aeryincreased PSV in middle cerebral aeryAbsent diastolic flow in umbilical aery  <response>: Fetuses with absent end diastolic volume have a poorer outcome than those with only reduction in EDF with majority being delivered by Caesarean section.The morbidity from necrotizing enterocolitis and cerebral haemorrhage is also higher. refer pgno:513 sheila textbook of obstetrics 2 nd edition. 