Adverse perinatal outcome of twin pregnancies according to chorionicity: Review of the literature

被引:70
作者
Sherer, DM [1 ]
机构
[1] Columbia Univ Coll Phys & Surg, St Lukes Roosevelt Hosp Ctr, Dept Obstet & Gynecol, Div Maternal Fetal Med, New York, NY 10019 USA
关键词
twin gestations; antenatal testing; perinatal outcome; chorionicity;
D O I
10.1055/s-2001-12937
中图分类号
R71 [妇产科学];
学科分类号
100211 ;
摘要
Twin gestations are at significant increased risk for adverse perinatal outcome. As a result, although prospective randomized data is lacking, increased fetal surveillance has been advocated for twins. Growth concordance is considered a reassuring sign in twins and conversely, discordancy to possibly reflect a hostile intrauterine environment at least to the smaller twin. Consequently, increased surveillance of discordant twins is commonly practiced. Monochorionic twins are at further risk for type-specific perinatal complications, for example, twin-twin transfusion syndrome. Recently, precise first-trimester depiction of chorionicity has enabled early antepartum stratification of twin gestations according to chorionicity, in comparison with previous later (mid- and third-trimester) ultrasonographic diagnosis of chorionicity. This immediately leads to the question whether antenatal testing of twins should differ according to chorionicity? Review of the literature supports that despite the existence of complications unique to monochorionic twin gestations, dichorionic twins sustain an increased risk of adverse perinatal outcome (such as fetal growth restriction) in comparison with singletons, and that close antenatal fetal surveillance of twins should be performed, irrespective of chorionicity.
引用
收藏
页码:23 / 37
页数:15
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