6～12％的死胎有染色体异常,死胎发生越早,异常可能性越大。即使胎儿无畸形,也不意味染色体一定正常。因此,死胎分析应包括染色体检查。但胎儿死亡至娩出要间隔一段时间,常发生组织自溶,影响培养及细胞遗传学检查。如获取近期死胎病例的羊水,则可解决该问题。作者对11例死胎(1例双胎)进行了研究。B 超监视下羊膜腔穿刺,抽10～20ml 羊水。双胎两羊膜囊均穿刺。胎儿娩出 6-12% of stillbirths have chromosomal abnormalities, the sooner the stillbirth occurs, the greater the possibility of abnormalities. Even if the fetus without deformity, does not mean that the chromosome must be normal. Therefore, stillbirth analysis should include chromosomal examination. But the fetal death to be delivered to an interval of time, often occurs in tissue autolysis, affecting culture and cytogenetic examination. If you get amniotic fluid in recent cases of stillbirth, you can solve the problem. The authors studied 11 stillbirths (1 twin). B ultrasound surveillance amniocentesis, pumping 10 ~ 20ml amniotic fluid. Twins both amniotic sac puncture. Fetal delivery