彩色多普勒超声监测胎儿脐动脉血流的临床意义

目的:通过监测晚期妊娠胎儿脐动脉血流异常,指导临床分娩。方法:采用彩色多普勒超声监测了1 226例晚期妊娠胎儿的脐动脉血流,定量分析收缩期血流速度最大值(S)与舒张期血流速度最低值(D)的比值(S/D)和阻力指数(resist-ance index,RI)。结果:1 226例孕妇中,脐动脉血流异常95例,其中脐带异常38例,胎儿宫内生长迟缓(intrauterine growthretardation,IUGR)20例,羊水少27例,妊娠高血压综合征(pregnancy-induced hypertension syndrome,PIH)10例;IUGR时S/D比值最高,为6.47±0.45;PIH时,RI值最高,为1.01±0.65。结论:脐动脉血流异常发生在临床症状出现之前,所以脐动脉血流的监测对临床的诊治有重要指导意义。

Value of measuring blood flow in fetus umbilical artery by color Doppler ultrasound

Objective:To guide the clinical parturition by measuring blood flow in the fetus umbilical artery with color Doppler ultrasound.Methods:A total of 1,226 cases of pregnant women were measured blood flow in the fetus umbilical artery with color Doppler ultrasound.The Doppler quantitatively analyzed indices were fetus umbilical artery blood flow peak velocities in systolic(S),end-diastolic(D),ratio of S/D and resistance index(RI).Results: There were 95 cases with abnormity in fetus umbilical artery blood flow,38 cases with abnormity in umbilical cord,20 cases with IUGR,27 cases with oligohydramnion,10 cases with PIH.The value of S/D was 6.47±0.45 in IUGR,which was maximal compared with other diseases.The value of RI was 1.01±0.65 in PIH,which was maximal compared with other diseases.Conclusion: Because the abnormality of the fetus umbilical artery can occur before the clinical symptom,monitoring blood flow in the fetus umbilical artery with color Doppler ultrasound is very useful for clinical diagnosis and treatment.