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早中孕期联合序贯筛查与中孕期血清筛查效能分析 被引量:3

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摘要 目的比较早中孕期血清学B超联合序贯筛查与中孕期血清学筛查对21-三体综合征(DS)、18-三体综合征(ES)、开放性神经管缺陷(NTD)的筛查效能,以形成有效的筛查模式,提高检出率,降低假阳性率。方法对同意进行唐氏筛查的孕妇,依不同孕周随机分为早中孕期联合序贯筛查组,中孕期血清筛查组。对早中孕期联合序贯筛查组孕妇孕早期B超测胎儿NT值,核对孕周,抽血查Free-β-HCG、PAPP-A,孕中期抽血查AFP、Free-β-HCG、uE3,结合孕妇年龄、孕周、体重、人种等相关信息,综合计算给出一个风险值。对中孕期血清筛查组孕妇同样B超核对孕周,但没有NT值的测量,抽血查AFP、Free-β-HCG、uE3,结合孕妇年龄、孕周、体重、人种等相关信息,计算风险值。结果早中孕期联合序贯筛查307例孕妇,检出DS高风险7例,ES高风险1例,NTD高风险2例,经羊水细胞培养胎儿染色体核型分析确诊DS2例,ES1例,经B超确诊NTD1例;同期中孕期血清筛查508例孕妇,检出DS高风险43例,ES高风险1例,NTD高风险4例,经羊水细胞培养胎儿染色体核型分析确诊DS1例,经B超确诊NTD1例。结论两种方法对照检出率均为100%,但早中孕期血清学B超联合序贯筛查,阳性预测值高,假阳性率低,是更有效的筛查模式。
出处 《中国优生与遗传杂志》 2011年第6期65-66,共2页 Chinese Journal of Birth Health & Heredity
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