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治疗指数是指

更新时间: 2020-12-20 00:00:00     

治疗指数是指药物的安全性指标,通常指半数中毒量/半数有效量或半数致死量/半数有效量。治疗指数大的药物相对治疗指数小的药物安全。但以治疗指数来评价药物的安全性,并不完全可靠。为此有人用1%致死量与99%有效量的比值或5%致死量与95%有效量之间的距离来衡量药物的安全性,其数值越大越安全。

关键词: 治疗 指数

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