A STUDY OF SPONTANEOUSLY ABORTED TWINS
A STUDY OF SPONTANEOUSLY ABORTED TWINS
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DOI：
10.1002/tera.1420210202
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发表时间：
1980-01-01
期刊：
影响因子：
--
通讯作者：
POLAND, BJ
中科院分区：
文献类型：
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作者：
LIVINGSTON, JE;POLAND, BJ
在对 1939 个自然流产的完整胚胎和胎儿进行检查时获得了 53 对人类双胞胎。自然流产妊娠中的双胞胎发生率约为三十五分之一。自然流产的双胞胎包括25对双胞胎胚胎、26对双胞胎胎儿和2对其中1个胚胎和1个胎儿。可以确定 37 对中的接合性。单卵[MZ]与双卵的比例为17.5:1。大约88%的双胞胎胚胎和21%的双胞胎胎儿是异常的。这些异常率与流产总体研究中观察到的异常率相似。将自然流产双胞胎的数据与活产双胞胎的数据进行比较。根据新生儿数据，双胞胎，尤其是同卵双胞胎，发生的频率比想象的要高。双胞胎的胚胎和胎儿死亡率比单胎高得多。
Pairs (53) of human twins were obtained during examination of 1939 spontaneously aborted complete embryos and fetuses. Rate of twinning in pregnancies which spontaneously aborted was about 1 in 35. The spontaneous twin abortions consisted of 25 sets of twin embryos, 26 sets of twin fetuses and 2 sets in which 1 was an embryo and 1 was a fetus. It was possible to determine the zygosity in 37 pairs. The ratio of monozygotic [MZ] to dizygotic was 17.5:1. About 88% of the twin embryos and 21% of the twin fetuses were abnormal. These abnormality rates were similar to those observed in the overall study of the abortuses. Data on spontaneously aborted twins were compared to data on liveborn twins. Twinning, particularly MZ twinning, occurs more frequently than thought, based on newborn data. Embryonic and fetal mortality is much higher in twins than in singletons.