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中孕期胎儿颈后皮肤皱褶增厚对于染色体异常的预测价值 被引量:6

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摘要 目的探讨中孕期胎儿颈后皮肤皱褶(nuchal fold,NF)增厚对于染色体异常的预测价值。方法对193位中孕期超声检查发现胎儿NF增厚的孕妇进行羊水或脐血核型分析,比较单纯性NF增厚的胎儿与NF增厚合并其他超声异常的胎儿的染色体异常检出率。结果NF增厚的胎儿共检出染色体异常22例,检出率为11.4%(22/193),其中以21三体(19例)为主,此外还检出X单体2例、13三体1例。单纯性NF增厚的胎儿共检出染色体异常3例,检出率为2.8%(3/108),异常核型全部为21三体。NF增厚合并其他超声异常的胎儿共检出染色体异常19例,检出率为22.4%(19/85),明显高于单纯性NF增厚的胎儿(χ^2=18.046,P〈0.05),异常核型包括21三体16例、X单体2例和13三体1例。结论NF增厚对于筛查染色体异常,特别是21三体具有重要的临床价值,尤其是当NF增厚合并鼻骨缺失、长骨短、心血管异常、神经系统异常、肠回声增强、胎儿水肿、颈后淋巴水囊瘤等一项或多项超声异常时,胎儿染色体异常检出率将明显提高。
出处 《中华医学遗传学杂志》 CAS CSCD 北大核心 2016年第3期422-423,共2页 Chinese Journal of Medical Genetics
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参考文献10

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二级参考文献60

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