This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intra Uterine Growth Restriction, Intrapaum and Antepaum Fetal Surviellance, Subject name: Gynaecology & Obstetrics
[{'content': 'Umbilical aery doppler finding which will most significantly predict the intrauterine deaths of the foetus - \nSelect and explain. \nA. Reversal of diastolic flow, B. Absent diastolic flow, C. Absent systolic flow, D. Presence of diastolic notch', 'role': 'user'}, {'content': "Answer: A \nExplanation: Please note, the question is 'Which pattern predicts fetal death' hence do not mark 'Absent systolic flow' which no more predicts, but is diagnostic of fetal death. Reversal of diastolic flow most significantly predict the intra uterine deaths of the foetus. Umbilical aery doppler done to assess fetal well being in high risk pregnancy. The order of worsening is estimated in the following sequence Diastolic notching Increased S/D ratio, due to decreased diastolic flow Absent end diastolic flow Reversal of end diastolic flow: most ominous sign, requiring immediate intervention", 'role': 'assistant'}]