【摘要】 目的:探讨染色体异常核型与产前诊断指征的关系及羊膜腔穿刺术的安全性,为产前遗传咨询提供客观的实验依据。方法:3800例具备产前诊断指征的妊娠妇女,在知情选择的情况下行羊膜腔穿刺术及染色体核型检测。分析相关数据,追踪羊膜腔穿刺术的结局。结果:羊水细胞一次培养成功率为99.26%(3772/3800),两次培养成功率为99.97%(3795/3796)。在3795例羊水细胞培养成功的染色体核型中,检出异常核型120例,异常率为3.16%,其中染色体数目异常率1.61%(61/3795),结构异常率0.58%(22/3795),多态性变异异常率0.97%(37/3795)。产前诊断指征中,按羊膜腔穿刺例数,位于前3位的分别是唐氏综合征筛查高危人群组(以下简称唐筛高危组,3541例)、不良妊娠分娩史组(95例)和单纯高龄组(≥35岁,83例)。检出染色体异常核型例数前3位的分别是唐筛高危组(103例)、夫妻单方染色体异常组(8例)和单纯高龄组(4例)。染色体核型异常率前3位的分别是夫妻单方染色体异常组(38.10%,8/21,仅1例有临床意义)、超声提示胎儿异常组(9.38%,3/32)和单纯... 更多还原

【Abstract】 Objective:In order to constitute a basis for genetic counseling,we studied the relationship between fetal chromosomal aberrations and prenatal diagnosis indications,and analyzed the security of amniocentesis.Methods:Fetal chromosomal karyotypes were examined in 3 800 pregnant women with amniotic cell culture in accordance with the indications for prenatal diagnosis.We studied the abnormal rate of fetal chromosomal karyotypes,searched the distribution of chromosomal abnormalities and the relation... 更多还原