单羊膜囊双胎足月产罕见,据苏应宽等报告发生率为1/6万。且可发生联体双胎畸形,胎儿死亡率亦很高,约60％。现报导一例如下: 患者28岁,第一胎妊娠38周,双胎,早破水,于1984年7月2日收入院。T36.3℃,P96,BP130/80。产科情况:宫底剑下一横指,可触及两个胎儿,均为头位,一头入盆、一头高浮。左下腹胎心150次/分,右下腹胎心144次/分。“B”型超声波检查,提示头位双胎。 Single amniotic sac twin births rarely occur, according to reports such as Su Ying wide rate of 1/6 million. Concomitant twins may occur, fetal mortality is also high, about 60%. A case is reported as follows: The patient was 28 years old, the first pregnancy 38 weeks of gestation, twins, premature rupture of water, in July 2, 1984 income hospital. T36.3 ° C, P96, BP130 / 80. Obstetric situation: Palace at the end of a cross-finger, can reach two fetuses, are the first bit, one into the basin, a high float. Left lower quadrant fetal heart rate 150 beats / min, right lower quadrant fetal heart rate 144 beats / min. “B” type ultrasound examination, suggesting that the first twins.