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在体外受精-胚胎移植(IVF-ET)中为了提高妊娠率,移植多个受精卵是必要的,但又增加了多胎妊娠的发生率,因此移植适当的胚数既达到理想的妊娠率又预防多胎妊娠。本文探讨移植不同胚数对妊娠率与多胎率的影响。 研究对象选择1991年6月～1994年10月施行IVF-ET的36岁以下妇女,获得4个以上可移植胚其中至少有一个形态良好者为对象。移植胚数4个者(4个移植组)140个周期;移植3个胚数者(3个移植组)95个周期;
In order to increase the pregnancy rate in IVF-ET, it is necessary to transplant multiple fertilized eggs, but the incidence of multiple pregnancies is also increased. Therefore, the proper embryo transfer can achieve both ideal pregnancy rate and prevention Multiple pregnancy. This article explores the impact of transplanted different embryos on pregnancy rate and multiple birth rate. Participants Select women under 36 years of age who underwent IVF-ET from June 1991 to October 1994 and received at least one of more than 4 transplanted embryos as their target. Four embryos were transplanted in 140 cycles (4 transplants), 95 cycles were transplanted in 3 embryos (3 transplants)