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羊膜腔穿刺术是对胎儿进行产前诊断的重要手段之一,因为羊膜腔内的羊水是胎儿的附属物,含有来自胎儿皮肤、消化道及泌尿道等处的脱落细胞。所以,如在妊娠16～24周之间,施行羊膜腔穿刺术,抽出一定量的羊水,进行细胞培养后作染色体棱型分析或作酶的生化成分测定,能了解宫内胎儿是否有遗传或代谢性疾病及先天畸形,可及时决定胎儿的存流,有利于优生。
Amniocentesis is one of the important means of prenatal diagnosis of the fetus because amniotic fluid in the amniotic cavity is an appendage of the fetus and contains exfoliated cells from fetal skin, digestive tract and urinary tract. Therefore, if during pregnancy between 16 and 24 weeks, amniocentesis is performed, a certain amount of amniotic fluid is extracted, chromosome analysis is performed after cell culture, or the biochemical composition of the enzyme is determined, it is possible to know whether the fetus in the uterus is inherited or not Metabolic disease and congenital malformations, fetal memory flow can be decided in time, is conducive to eugenics.