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对有家族遗传病史，异常孕、产史的高危孕妇及发现胎儿畸形时，对胎儿行染色体检查是产前诊断的重要内容。1989年至1999年我们在B超监测下取胎儿脐血制作染色体进行了核型分析的研究，现报告如下。1 资料与方法1.1 临床资料 72例妊娠中、晚期孕妇在B超监测下取胎儿脐血制备染色
Chromosome examination of the fetus is an important part of prenatal diagnosis of high-risk pregnant women with a family history of inheritance, abnormal pregnancy and birth history and fetal abnormalities. From 1989 to 1999, we studied the karyotype analysis of chromosomes produced by fetal umbilical cord blood under B-ultrasound monitoring. The report is as follows. 1 Materials and Methods 1.1 Clinical data 72 cases of pregnant women, pregnant women in the late B-monitoring umbilical cord blood taken under the preparation of staining