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五个半月胎盘成熟度是多少正常
更新时间: 2020-11-04 00:00:00  

五个半月胎盘正常的成熟度是二级。胎盘的成熟度共分四级:O级,1级,2级和3级。1级标志胎盘基本成熟;2级晚标志胎盘成熟;3级晚标志胎盘已衰老,由于钙化和纤维素沉着,使胎盘输送氧气及营养物质的能力降低,胎儿随时有危险。

关键词: 半月 胎盘 成熟度 多少 正常

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