彩色多普勒超声对宫内发育迟缓胎儿动静脉的血流动力学研究

目的应用彩色多普勒超声检测宫内发育迟缓(IUGR)胎儿动静脉的血流动力学参数。方法测量胎儿静脉导管和脐静脉的血流量,计算静脉导管(DV)分流率;测量胎儿脐动脉、大脑中动脉(MCA)、肾动脉的搏动指数(PI)、阻力指数(RI)及脐动脉收缩期最大流速与舒张末期流速的比值(S/D),结果进行对比分析。结果与对照组比较,IUGR组胎儿脐动脉的PI、RI、S/D及肾动脉的RI显著增高,MCA的PI、RI及S/D显著减低,DV分流率显著增加,差异均有统计学意义(P<0.05)。结论彩色多普勒超声通过综合监测胎儿血流动力学变化,可以全面、客观地评价胎儿的供血情况,预测胎儿宫内缺氧和IUCR情况。

Hemodynamic study of fetal artery and vein in intrauterine growth retardation by color Doppler ultrasound

To detect the hemodynamic parameters of fetal artery and vein in intrauterine growth retardation （IUGR） by color Doppler ultrasound. Methods The blood flow volume of fetal ductus venosus and umbilical vein were measured, the blood flow volume ratio of ductus venosus was calculated. The PI, RI and S/D of fetal umbilical artery, middle cerebral artery（MCA） and renal artery were measured, the results were analyzed. Results Compared with control group, the PI, RI and S/D of umbilical artery and RI of renal artery in IUGR group were increased significantly, while the PI, RI and S/D of MCA were decreased significantly, ratio of ductus venosus was increased significantly （ P〈0.05 ）. Conclusion Color Doppler uhrasound can comprehensively detect fetal hemodynamic changes, which can overall and objectively evaluate the fetal blood supplement and predict the conditions of intrauterine anoxia and IUGR.