产前诊断与血清学筛查在高龄孕妇唐氏综合征中的应用比较

发布时间：2019-07-05 21:10

【摘要】：目的 :比较孕中期血清学筛查和产前诊断在预防高龄孕妇唐氏综合征等出生缺陷中的临床应用价值。方法 :选取2011~2013年间在南京医科大学附属无锡妇幼保健院行羊水穿刺产前诊断的506例孕中期单胎妊娠高龄孕妇为研究对象,分为两组:一组孕妇在诊断前知情同意后自愿进行了孕中期游离绒毛膜促性腺激素、游离雌三醇、甲胎蛋白等血清学指标检测,筛查均为高风险(筛查高风险组,136例,神经管缺陷高风险未计入内);另一组孕妇为≥35岁未行血清学筛查而直接行羊水穿刺产前诊断者(单纯高龄组,370例)。根据两组诊断结果及随访妊娠结局比较血清学筛查的临床应用价值。结果:506例高龄孕妇中,共诊断染色体异常25例,阳性率4.94%。筛查高风险组共确诊唐氏综合征9例(6.60%),其他染色体异常4例(3.0%);随访发现该组不良妊娠结局发生率4.41%(6/136)。单纯高龄组中检出唐氏综合征2例(0.50%),其他染色体异常10例(2.70%),不良妊娠结局发生率0.54%(2/367)。筛查高风险组对唐氏综合征的检出率和不良妊娠结局发生率均明显高于单纯高龄组(P0.01)。结论 :孕中期血清学筛查,不仅在高龄孕妇唐氏综合征的预防中有较高应用价值,对评估高龄孕妇发生不良妊娠结局的风险也有较好作用。
[Abstract]:Objective: to compare the clinical value of serological screening and antenatal diagnosis in the prevention of birth defects such as Down's syndrome in elderly pregnant women. Methods: 506 elderly pregnant women with single pregnancy in the middle trimester of pregnancy were selected from 2011 to 2013 in Wuxi Maternal and Child Health Hospital affiliated to Nanjing Medical University as subjects. They were divided into two groups: one group of pregnant women voluntarily detected free chorionic gonadotropin, free estriol, alpha-fetoprotein and other serological indexes in the second trimester of pregnancy after informed consent before diagnosis, and all of them were at high risk (high risk group, 136 cases). The high risk of neural tube defects is not included. Another group of pregnant women 鈮，

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