The main causes of the death of one fetus in twin pregnancy were cord elements(5 cases), fetal deformity(3 cases), velamentousinsertion(4 cases)and unknown etiology(15 cases).
双胎之一胎儿死亡主要原因:脐带因素5例、胎儿畸形3例、帆状胎盘4例、原因不明15例。
2
Methods 5 cases of vasa previa in velamentousinsertion of umbilical cord were analyzed retrospectively.
方法对5例脐带帆状附着前置血管进行回顾性分析。
3
The distance from the placental edge to the insertion of the umbilical cord was measured after delivery, and the results were used to classify cordinsertion as normal, marginal, or velamentous.