多胎妊娠一胎死亡时,死亡胎儿的变化、对存活胎儿的影响及存活儿的预后等,尚不十分清楚,处理也比较困难,作者复习文献结合自己遇到的病例,概述如下。据Litschgi(1980)报道双胎妊娠一胎死亡的发生率为6～7%,其死因与胎儿畸形关系较少,以单一脐动脉较为多见,如发生于妊娠早期,由于死亡胎儿自溶,则无法查明原因。另据Livnat(1978)报道,双胎儿一胎儿死亡后变成纸样胎儿的病例,多数为帆状胎盘,认为帆状胎盘也可能为胎儿死亡的原因。关于死亡胎儿对存活儿的影响,(?) Changes in the number of fetal deaths, the impact on the surviving fetus and the prognosis of the surviving child are not yet known and are difficult to handle. The authors review the literature combining the cases they encounter and summarize it as follows. According to Litschgi (1980), the incidence of twins’ firstborn births is 6-7%. The cause of death is less related to fetal malformations than single umbilical arteries, such as early pregnancy. Due to the death of fetal fetuses, You can not find the reason. According to Livnat (1978), the most common case of a fetus that became a pattern-like fetus after the first fetus died was that the sail placenta may also be the cause of fetal death. On the impact of fetal death on survivors, (?)