Taylor M B, Anderson R L, Golbus M S
Am J Med Genet. 1984 Jul;18(3):419-22. doi: 10.1002/ajmg.1320180310.
One hundred pairs of twins were encountered in 8,500 pregnancies having genetic amniocentesis. Only 5 of 27 (18.5%) pairs were recognized before the institution of routine ultrasonic examination, while 69 of 73 (94%) twin pairs were found after ultrasound use. Amniotic fluid was obtained from both sacs in 71 of the 73 (97%) identified twin gestations in which both twins were living at the time of amniocentesis.
在8500例接受遗传羊膜腔穿刺术的妊娠中，发现了100对双胞胎。在常规超声检查实施之前，27对双胞胎中只有5对（18.5%）被识别出来，而在使用超声检查之后，73对双胞胎中有69对（94%）被发现。在73例已识别的双胎妊娠中，有71例（97%）在羊膜腔穿刺术时两个胎儿均存活，且从两个羊膜囊中均获取了羊水。
