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上消化道出血量在多少会出现黑便
更新时间: 2020-11-04 00:00:00  

如果是消化道出血,出血量在五十毫升以上,低于五十毫升,我们是不会看到有明显的黑便,但是可以通过,取大便做潜血试验检查来明确。当出血量在四百毫升以上,我们可能身体会出现乏力头晕等症状,发现有黑便是判断是否有出血需要做大便隐血试验明确,判断出血的部位需要做胃镜或肠镜来明确。

关键词: 消化道 出血量 多少 出现

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