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孕18周nf值多少正常
更新时间: 2020-11-05 00:00:00  

孕18周nf值小于5mm就是正常的,NF是指胎儿颈后的皮肤及软组织厚度。

孕18周胎儿大小标准:双顶径的平均值为4.25士0.53,腹围的平均值为12.41士l.89,股骨长为2.71士0.46。如果胎儿的B超数值在上述范围内,那么就是正常的,建议继续均衡饮食,增强营养,注意保暖,以免感冒。

关键词: nf 多少 正常

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