怀孕38周，胎儿双顶径92mm，股骨长68mm，请

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https://m.baidu.com/bd_page_type=1/t=mip/tc?ct=54&lid=42209910740340&module=mip&cst=112&clk_extra=%7B%22pageid%22%3A%2242209910740340%22%2C%22searchID%22%3A%2242209910740340%22%2C%22nPageID%22%3A%2242209910740340%22%2C%22mip_logid%22%3A%2242209910740340%22%2C%22masterpage_type%22%3A%22self%22%2C%22originalUrl%22%3A%22http%3A%5C%2F%5C%2Fmip.club.xywy.com%5C%2Fmip%5C%2F20140410%5C%2F39532092.htm%22%2C%22srcid%22%3A%22landingpage%22%2C%22name%22%3A%22A%5Cu533a%5Cu6b63%5Cu6587%5Cu4e0b%5Cu65b9%5Cu4e2d%5Cu95f4%5Cu5c55%5Cu5f00%5Cu6309%5Cu94ae%22%2C%22id%22%3A%22new_expand_content%22%7D&tcreq4log=1

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病情分析：你好，这个胎儿的体重可以按照股骨的长度来估算的，目前的股骨长度是6.8cm，那么估算出来大约是有5.6斤左右的

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问题描述：怀孕38周，胎儿双顶径92mm，股骨长68mm，请问胎儿有多重