...dex，RI）增高，与正常对照组均有显著性差异（P＜0.05），各病例组血流速度降低，以舒张末期血流速度（end diastolic velocity，EDV）降低明显（P＜0.05），手术后OA、PCA、CRA的EDV较手术前有明显增加，RI降低（P＜0.0...
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...学外文文献 8周、10周、12周超声检查腹主动脉收缩期峰值血流速度(systolic velocity,SV)、舒张末期血流速度(diastolic velocity,DV)、平均血流速度(mean velocity,MV)、搏动指数(pulsitile index,PI)...
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舒张期末血流速度 end diastolic velocity ; EDV
病灶局部所测血流动力学参数为收缩期峰值血流速度PS V，舒张末期血流速度(EDV)及阻力指数ri。
The hemodynamic parameters measured in the lesion locations included peak systolic velocity (PSV), end diastolic velocity (EDV), and resistance index (RI).
目的探讨脐动脉收缩期血流峰值（S）与舒张末期血流速度（D）的比值（S/D）对预测胎儿宫内缺氧的临床价值。
Objective This paper is to investigate the ratio of the systolic peak value and the end-diastolic velocity of blood flow (S/D value) and its clinical value, which can predict fetal anoxia.
目的评价肝素对改善妊娠中晚期脐动脉收缩期最大血流速度（S）与舒张末期血流速度（D）的比值异常的临床效果。
ObjectiveTo evaluate the efficiency of heparin on the ratio of peak systolic to least diastolic flow velocity (S/D) of umbilical artery flow velocity waveforms at second-trimester pregnancies.
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