监测胎儿脑、脐血流阻力指标预测胎儿宫内缺氧

Predictiug Intrauterine Hypoxia by Detecting Fetal Cerebral and Umbilical Hemodynamics

目的：预测胎儿宫内缺氧。方法：应用彩色多普勒超声对147例孕妇进行详细观察。结果：胎儿的大脑中动脉（MCA）血流S／D值＜4、PI＜1.4、RI值＜0.6（S／D、PI、RI值简称阻力指标）；脐动脉（UMA）血流S／D值＞3、PI值＞1.7、RI值＞0.8；PI、RIMCA／PI、RIUMA＜1时，提示胎儿宫内缺氧.妊高征组和伴IUGR的妊高征组缺氧发生率与正常组缺氧发生率比较差异有显著性（P＜0.001）。结论：产前直接监测胎儿脑、脐血流阻力指标，可以了解胎儿颅脑血循环及胎儿胎盘循环状态，预测胎儿宫内缺氧。

Objective: To predict fetus intrauterine hypoxia. Methods: Color doppler ultrasonography was performed in 147 cases of pregnant women. Results: S/D of fetal middle cerebral artery (MCA) blood flow wasless than 4, PI was less than 1. 4 and RI was less than 0. 6. S/D of umbilical artery (UMA) blood flow was more than 3, PI was more than 1. 7 and RI was more than 0. 8. When PI and RI MCA - UMA ratio was less than 1 indicated fetus intrauterine hypoxia. It was found that there was a significant difference in the frequency of fetal intrauterine hypoxia between the pregnancy - induced hypertension group or the intrauterine growth re-tardation group and the normal group (P< 0. 01 ). Conclusions: Monitoring MCA and UMA bldri flow resis- tance coud supply important information about fetal brain and fetus - plancenta circulation, and could predict fe- tus intrauterine hypoxia.