【摘要】 为了弥补产前诊断的应用不足，作者在新生儿娩出后及时进行了５４２８例脐带血染色体的核型分析，共分析５４２８例脐血染色体，结果表明总的异常率为０．７１８％，其中性染色体为最高比例的异常率。该研究还表明在胎儿娩出后立即做染色体核型分析有助于优生、优育、优教和遗传流行病学研究。也有助于家庭对该子的教育、抚养以及治疗的长远规划。更多还原

【Abstract】 Becouse prenatal dignosis was not used in evary primary hospital in China, we thought that the umbilical cord blood chromosomes would be analysised in basic hospitals for diagnosising if these newborns had some abnormal chromosome diseases, which was very easy to do it. From 1993to 1995, 5428 newborns umbilical cord blood chromosome karyotypes were analysised. The results shown us that there were 39 cases who had the abnormal karyotypes in 5428 newborns.The abnomal ratio was 0. 718%. The sex chromosome was highest ratio in all abnomal chromosome karyotypes. The study also shown us that early analysis of chromosome for newborn in the basic units will help many families give good education ,good fostering and good treatment for them children in early time.更多还原