超声检测绕颈脐带面积减少率与胎儿宫内缺氧关系的研究

目的:应用多普勒超声评价绕颈脐带面积减少率与胎儿宫内缺氧的关系。方法:选择产前1~3W脐带绕颈胎儿285例,测量并计算胎儿绕颈脐带横切面积减少百分率,检测脐动脉血流参数,胎儿行无应激试验(nonstresstest,NST)胎儿监护,产后追踪胎儿Apgar评分。结果:根据胎儿监护评分,将脐带绕颈胎儿分为缺氧组及非缺氧组,两组面积减少率分别为:(65·6±8·3)%、(43·3±7·6)%,两者比较差异有显著性意义(P<0·01);两组脐动脉血流动力学参数、胎儿Apgar评分<7的例数比较,差异均有显著性意义。结论:超声检测绕颈脐带横切面积减少率可及时提示胎儿宫内缺氧,为临床尽早诊断和治疗提供有力帮助。

Relationship between ratio of decreased area of UCAN and fetal intrauterine anoxia by ultrasonography

Objective:By detecting the decreased ratio of the transverse section areas of umbilical cord around the neck (UCAN) with Doppler ultrasonography, to evaluate the relation between the transverse section areas of UCAN and fetal intrauterine anoxia.Methods:285 fetuses with UCAN from 1 to 3 w before antepartum.were examined to calculate the decreased ratio of the transverse section areas of UCAN and umbilical artery blood flow parameter. The fetuses were tested by nonstress test (NST) to observe the fetal Apgar Score after childbirth.Results:The fetuses were divided into anoxia group and non-anoxia group according to NST score.The ratio of decrease areas non-anoxia group (43.3±7.6) was obviously less than that of anoxia group (65.6±8.3,P<0.01).There also was significant difference in umbilical artery blood flow parameter and fetal Apgar score between the two groups.Conclusion:The decreased ratio of the transverse section areas of UCAN detection by ultrasonography can imply fetal intrauterine anoxia in time, and can provide strong help for clinical early diagnosis and timely treatment.