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随着诱导排卵药物的普遍使用,以及体外授精后移植多个胚胎,使多胎妊娠明显增加。由于胚胎数目增多,妊娠并发症及围产儿死亡率也明显增高,即使多个早产儿存活,其体格与智能素质也有可能低下。因此,有效而安全控制胚胎和分娩数目,提高存活儿的成熟与质量,减少多胎妊娠对母婴的损害,已成为重要的研究课题。现结合文献,对B超指引下经腹与经阴道减胎术的有关问题浅述如下。 一、适应症 1.对B超证实为≥3胎的早期妊娠,一般减为2胎;双胎孕妇因患合并症,为减少其负担或并发
With the widespread use of induced ovulation drugs, and in vitro fertilization after transplantation of multiple embryos, so that multiple pregnancy significantly increased. Due to the increased number of embryos, complications of pregnancy and perinatal mortality are also significantly increased. Even if multiple premature babies survive, their physical and intellectual qualities may be low. Therefore, the effective and safe control of the number of embryos and childbirth, raising the maturity and quality of surviving children and reducing the damage of multiple pregnancy to maternal and infant has become an important research topic. Now combined with the literature on the B-guided abortion and vaginal abortion related issues as follows. First, the indications 1. The B-confirmed early pregnancy ≥ 3 fetuses, generally reduced to 2 tires; twin pregnant women suffering from complications, in order to reduce the burden or concurrent