Only one case had suffered abortion following amniocentesis,the fetal loss rate was 0.11%,no fetal loss case was found in cordocentesis.

• 羊膜腔穿刺术仅1例孕妇发生流产；胎儿丢失率为0.；11%25；脐静脉穿刺术尚未发生胎儿丢失的病例。