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正常人的ph值是多少
更新时间: 2020-11-05 00:00:00  

PH(酸碱度)值,是一项血液酸碱度的指标,PH动脉血正常值为7.35-7.45,平均7.40。当PH大于7.45为碱血症,可见于代谢性碱中毒及呼吸性碱中毒;当PH小于7.35为酸血症,可见于代谢性酸中毒,呼吸性酸中毒及代谢性酸中毒合并呼吸性酸中毒。PH正常值只说明血液中的酸碱度在正常范围内,不能排除酸碱平衡失调的可能。PH值需要结合其他酸碱指标,如二氧化碳分压、碳酸氢盐、缓冲碱等及生化指标(如钾、氯、钙),才能正确判断是否酸中毒、碱中毒,还是复合性酸碱平衡紊乱。

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