Sperling L, Tabor A
Department of Obstetrics and Gynecology, Juliane Marie Center, Rigshospitalet, Copenhagen, Denmark.
Acta Obstet Gynecol Scand. 2001 Apr;80(4):287-99. doi: 10.1034/j.1600-0412.2001.080004287.x.
Determination of chorionicity is one of the most important issues in the management of twin pregnancy. Modern ultrasound equipment has made it possible to accurately assess placentation already in the first trimester with the lambda sign. With regard to prenatal diagnosis, it is important to know the chorionicity in order to calculate the risk of chromosomally abnormal fetuses. Accurate chorionicity offers the obstetricians the opportunity to observe the monochorionic twins more intensively than is required for twins with dichorionic placentation. This review gives an update of the state of the art for clinicians caring for twin pregnancies.
确定绒毛膜性是双胎妊娠管理中最重要的问题之一。现代超声设备已使在孕早期通过“λ”征准确评估胎盘情况成为可能。对于产前诊断而言，了解绒毛膜性对于计算染色体异常胎儿的风险很重要。准确的绒毛膜性使产科医生有机会比双绒毛膜胎盘双胎更密切地观察单绒毛膜双胎。这篇综述为照料双胎妊娠的临床医生提供了最新的技术进展情况。
