绒毛取样(CVS)是应用胎儿组织进行产前诊断的新发展,此法用于孕8～12周,于超声波引导下经子宫颈管吸取绒毛少许,所得绒毛可通过直接制备或培养后进行染色体和/或生化分析。其诊断结果经常于2周内可得,籍此可尽快解除孕妇夫妇的焦虑。当发现胎儿有遗传缺陷时,可有机会选 Villus sampling (CVS) is the application of fetal tissue prenatal diagnosis of new developments, this method is used for 8 to 12 weeks of pregnancy, under the guidance of ultrasound through the cervix aspiration fluff a little, the resulting villi can be directly prepared or cultured chromosome And / or biochemical analysis. The diagnosis is often available within 2 weeks, which can relieve the anxiety of pregnant women and couples as soon as possible. When the fetus is found to have genetic defects, may have the opportunity to choose