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距宫口多少为前置胎盘
更新时间： 2020-11-04 00:00:00  

距宫口小于2cm为前置胎盘，达宫颈内口边缘为边缘性前置胎盘的，部分覆盖宫颈口为部分性前置胎盘。前置胎盘是妊娠晚期出血的主要原因之一，是妊娠期的严重并发症，处理不当能危及母儿生命安全。其发生率国内报道为0.24％～1.57％，国外报道为1.0％。前置胎盘患者中85％～90％为经产妇，尤其是多产妇，其发生率可高达5％。

关键词： 多少 前置 胎盘

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