前置胎盘的病因和症状是什么?What is the etiology and symptom of preposition placenta?

陈凤林教授指出：前置胎盘病因是反复宫腔操作，子宫畸形，前次剖腹产等。

Professor Chenfenglin pointed out that the cause of the placenta was repeated uterine operation, uterine deformity, and the previous Caesarean section.

前置胎盘症状即妊娠晚期发生无诱因无痛性阴道出血是前置胎盘典型的临床表现。

Preplacenta symptoms, i.e., non-inductive painless vaginal hemorrhage in late pregnancy, are typical clinical manifestations of preplacenta.

胎盘全部或部分位于胎儿的先露部前面，称为前置胎盘。前置胎盘是妊娠晚期出血的主要原因之一，为妊娠期的严重并发症，如处理不当，能危及母儿生命安全。北京安太医院将宫颈高位环扎安太环应用于前置胎盘保胎止血， 创立前置胎盘最新疗法， 效果确切!

The placenta is completely or partially located in front of the foetus's first dew, called the anterior placenta. Preposition placenta is one of the main causes of bleeding in late pregnancy. It is a serious complication of pregnancy, such as improper management, which can endanger the life of the mother and child. Beijing Antai Hospital will apply the cervix high ring Za Antai ring to the front placenta to stop bleeding and establish the latest treatment of the front placenta. The effect is accurate!