彩色多普勒超声检测妊高征血流速度比值的临床意义

目的：通过对妊高征（PIH）胎儿脐动脉（UmA)，大脑中动脉（McA)及孕妇子宫动脉（UtA)速度比值的检测，探讨其在预测围产儿结局中的价值。材料与方法：应用彩色多普勒超声测定48例妊高下及60例正常中晚期妊娠胎儿UmA,McA及孕妇UtA的S／D值，分析正常妊娠与不同程度妊高征S／D值的变化以及S／D值与围产儿结局的关系。结果；妊高征时胎儿Uma,McA及孕妇UtA的S／D值有不同程度变化，尤以重度妊高征S／D值变化最明显，表现为胎儿UmA,UtA的S／D升高，McA的／SD值降低，UmA S/D值改变敏感于UtA,McA；而McA的S／D值对围产儿结局有更好的预报的S／D值升高；McA的S／D值降低；UmA S/D改变敏感于UtA,McA，而McA的S／D值对围产儿结局有更好的预报价值。结论：本研究为脐动脉，大脑中动脉及子宫动脉速率比值监护妊高征胎儿宫内状况，预测围产儿结局提供理论依据。

Clinical significance of blood velocity ratio in pregnancy induced hypertension by color Doppler ultrasonography

Objective:To discuss the relation between outcome of perinatal and velocity ratio of fetal middle cerebral artery and umbilical artery and uterine artery in pregnancy induced hypertension.Methods:Color Doppler ultrasonography was used to examine S/D of UmA and McA and UtA in 48 cases of pregnancy induced hypertension and 60 cases of normal second three trimester pregnancy.To analyze the changes of S/D in various degree of pregnancy induced hypertension and normal pregnancy and to analyze the influence of S/D on outcome of perinatal infants. Result:S/D value of UmA and McA and UtA showed varying degree of changes in pregnancy induced hypertension,especially in severe PIH the changes were apparent,they showed that the S/D values of UmA and UtA increased;but the S/D value of McA was decreased,and the change of S/D value of UmA was more sensitive than the S/D value of McA and UtA,and the S/D value of McA had a better value to predict the outcome of perinatal infants.Conclusion:The study offers a theoretic basis for UmA and McA and UtA predicting situation of fetus and the outcome of perinatal infants pregnancy induced hypertension.