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近年来,由于促排卵药物的使用和体外受精的开展,出现了一次妊娠孕多个胎儿的多胎妊娠.此种多胎妊娠易于早产,且因胎儿未成熟,围产期病率和死亡率均增高,同时还容易并发胎位异常、脐带异常和妊娠高血压综合征等,给围产期管理带来了极大困难。针对此种多胎妊娠,有人做了如下的尝试,即人为地使部分胎儿死亡,以减少胎儿数目和改善残留胎儿的预后,1988年Kanhai 等首次报道.其方法为在超声波指引下通过穿刺,使五胎妊娠中的三个胎儿死亡成为双胎妊娠获得成功,足月分娩成熟活婴.选择性终止妊娠术原则上用于三胎以上的多胎妊娠,使之成为双胎.
In recent years, due to the use of ovulation induction drugs and in vitro fertilization, there has been more than one pregnancy multiple pregnancies of multiple pregnancies, such multiple pregnancies are prone to premature delivery, and due to immature fetus, perinatal morbidity and mortality were increased , But also prone to concomitant fetal position abnormalities, umbilical cord abnormalities and pregnancy-induced hypertension syndrome, etc., to the perinatal management has brought great difficulties. In response to such multiple pregnancies, attempts have been made to artificially kill a portion of the fetus to reduce the number of fetuses and improve the prognosis of residual fetuses, first reported by Kanhai et al in 1988. By puncturing under ultrasound guidance Three fetuses in a five-fetus pregnancy become successful twin pregnancies and mature babies in full-term delivery Selective termination of pregnancy is, in principle, used for multiple births of more than one child to make them twins.