前置胎盘 汪希鹏 妇产科
前置胎盘 汪希鹏 妇产科
定义 孕28周后,胎盘附于子宫下段,甚至胎盘下缘达 到或覆盖宫颈内口,位置低于胎儿先露部,称 为前置胎盘
定义 孕28周后，胎盘附于子宫下段，甚至胎盘下缘达 到或覆盖宫颈内口，位置低于胎儿先露部，称 为前置胎盘
分类 中央型前置胎盘: the internal cervical os is covered completely by placenta. 部分性前置胎盘: the internal os is partially covered by placenta 边缘性前置胎盘: the edge of the placenta is at the margin of the internal os >低置胎盘: the placenta is implanted in the lower uterine segment such that the placenta edge actually does not reach the internal os but is in close proximity to it
分类 ➢ 中央型前置胎盘: the internal cervical os is covered completely by placenta. ➢ 部分性前置胎盘: the internal os is partially covered by placenta. ➢ 边缘性前置胎盘: the edge of the placenta is at the margin of the internal os. ➢ 低置胎盘: the placenta is implanted in the lower uterine segment such that the placenta edge actually does not reach the internal os but is in close proximity to it
分类 TOTAL PARTIAL MARGINAL
分类
前置胎盘类型判定 >根据检查当时,宫口扩张和胎盘位置关 系确定如低置胎盘在宫口开2厘米时,能 变成部分性前置胎盘。 >肛查确定宫口扩张和胎盘关系是非常危 险,引发严重大出血( Severe hemorrhage)
前置胎盘类型判定 ➢ 根据检查当时，宫口扩张和胎盘位置关 系确定如低置胎盘在宫口开2厘米时，能 变成部分性前置胎盘。 ➢ 肛查确定宫口扩张和胎盘关系是非常危 险，引发严重大出血（ severe hemorrhage）