Elias S, Gerbie A B, Simpson J L, Nadler H L, Sabbagha R E, Shkolnik A
Am J Obstet Gynecol. 1980 Sep 15;138(2):169-74. doi: 10.1016/0002-9378(80)90029-0.
Among 1,613 women studied with routine ultrasonography prior to genetic amniocentesis at Northwestern University Medical School, 25 of 26 multiple gestations were detected. Sampling of fluid from both amniotic sacs was requested by 20 women with twin gestations in which both fetuses were ultrasonographically determined to be viable and of normal size. Fluid was obtained successfully from both amniotic sacs in 19 of 20 cases. The conclusions are that (1) twin gestations can be reliably detected by the use of routine ultrasonography, (2) both amniotic sacs can usually be sampled, and (3) the complication rate appears to be minimal to the patient and the fetuses, although the sample size is still small.
在西北大学医学院接受遗传羊膜腔穿刺术前常规超声检查的1613名女性中，检测出26例多胎妊娠中的25例。20例双胎妊娠的女性要求对两个羊膜囊进行羊水采样，超声检查确定两个胎儿均存活且大小正常。20例中有19例成功从两个羊膜囊中获取了羊水。结论是：（1）使用常规超声检查可可靠地检测出双胎妊娠；（2）通常可以对两个羊膜囊进行采样；（3）尽管样本量仍然较小，但对患者和胎儿而言，并发症发生率似乎最低。
