目的 通过对不良孕产史(如流产、死胎、胎儿畸形等)的夫妇染色体核型分析,探讨不良孕产史与染色体异常之间的关系,为再次妊娠提供产前咨询。方法 对1373对有不良孕产史的夫妇,抽取静脉血,经淋巴细胞培养、制备染色体及G显带分析。结果 在1373对(2746例)患者中检出异常核型100例,异常率为3.64%;其中染色体相互易位45例、罗伯逊易位15例、染色体臂间倒位39 例、及X性染色体长臂部分丢失1例,分别占异常染色体的42.86%、15.31%、40.82%、1.02%。结论 染色体异常是导致流产、死胎、胎儿畸形等疾病的重要原因之一,有不良孕产史的夫妇应常规进行染色体核型分析,染色体核型异常的夫妇再次妊娠时应进行产前诊断以降低染色体异常患儿的出生率。

Objective To explore the relationship between the histories of abnormal pregnancy and chromosomal abnormality by analyzing the chromosomal karyotype in 1373 couples with histories of abnormal pregnancy(such as abortion, stillbirth and fetal malformation and so on)in order to provide genetic consultation for secondary pregnancy. Methods The venousblood samples of 1373 couples with the histories of abnormal pregnancy were obtained, and then the lymphocytes were cultured, the chromosome was prepared,G-show band was analyzed. Results Among 1373 couples(2746 cases), there were 100 cases were found with abnormal karyotype, the abnormal rate was 3.64%. There were 45 cases with reciprocal translocation, 15 cases with Robertsonian translocation, 39 cases with inversion and 1 case with loss deletion Xq chromosomal. Conclusion Chromosomal abnormality is an important reason to lead to some diseases such as abortion、stillbirth and fetal malformation and so on, the couples with histories of abnormal pregnancy should analyze the chromosomal karyotype. The couples with chromosomal abnormality who get secondary pregnancy should have prenatal diagnosis to reduce the birthrate of infants with chromosomal abnormality.