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4个月胎儿的标准体重是多少
更新时间: 2020-11-05 00:00:00  

怀孕第4个月,胎儿成长迅速,胎儿身长由越13厘米长到17厘米,体重也由约150g长到约250g。

胎儿,从精卵细胞结合至小儿出生前称胎儿,指妊娠8周以后的胎体。妊娠4~8周娩出的胎体为胚胎。胚胎期重要器官逐渐形成,在胎儿期各器官进一步发育成熟。胎儿在妊娠28周以前娩出的现象称为流产;孕28~37周前娩出的现象称为早产,孕37周至不满42足周娩出的现象称为足月产。妊娠全程共280天即40周。

关键词: 胎儿 标准 体重 多少

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