天气预报 > 其他 > 怀孕8周b超正常值是多少
怀孕8周b超正常值是多少
更新时间: 2020-11-04 00:00:00  

怀孕8周b超孕囊应该是36-58mm之间,如果孕囊过小的话,在这个时候就要增强自己营养,不然孩子在出生之后身体免疫力就会下降。

孕囊是原始的胎盘组织,被羊膜、血管网包裹的小胚胎。孕囊是怀孕最初的形态,那时候胎儿还没有形成,胎芽出现时已经有胎心跳动了。孕囊也算子宫外孕的一种产物,受精卵在7天时由于发炎、粘连等某些因素未进入子宫,通常宫外孕都会大出血,一般来说胎儿无法存活。

关键词: 怀孕 正常值 多少

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