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遗传病的产前诊断是取胚胎的一部分做染色体或生化分析,如确诊正常,胚胎可继续发育。如中期妊娠可借助胎儿镜取胎血或羊膜腔穿刺取羊水细胞。病人及其家庭以及医护人员都不愿中期引产,孕早期诊断最可取。目前,某些遗传病可在孕8~12周经宫颈绒毛活检做出诊断。如证实胚胎异常,应在孕早期终止妊娠。此期,孕妇不太意识到已有胎儿存在,别人也不知她已有孕。着床前更早阶段做产前诊断是否可能?这需体外处理胚胎然后植入母体子宫,因为目前尚不能在体内取到一部分着床前的胚
Prenatal diagnosis of genetic disease is taken as part of the embryo chromosome or biochemical analysis, such as normal diagnosis, the embryo can continue to develop. Such as mid-term pregnancy fetus fetus fetus fetus fetus or amniocentesis to take amniotic fluid cells. Patients and their families and health care workers are reluctant to mid-term abortion, early pregnancy diagnosis is the most desirable. At present, some genetic diseases can be diagnosed by cervical villus biopsy 8 to 12 weeks pregnant. If confirmed abnormal embryos, pregnancy should be terminated in early pregnancy. During this period, pregnant women are less aware of the existence of a fetus, others do not know that she has been pregnant. Is it possible to do prenatal diagnosis at an earlier stage of implantation? This requires that the embryos be treated in vitro and then implanted into the uterus of the mother because no pre-implantation embryos are currently available in the body