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两种方法测定的尿液渗透压和尿液电导率相关关系分析 被引量:8

Correlation between urine osomotic pressure examined by two methods and urine conductivity
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摘要 目的探讨冰点渗透压、折射渗透压和尿液电导率的相关关系。方法用冰点渗透压仪、折射渗透压仪及UF-100全自动尿沉渣分析仪对248例尿糖、尿蛋白阴性的门诊及住院病人晨尿标本分别测定渗透压和电导率值,并进行配对分析。结果冰点渗透压,折射渗透压及电导率三者之间均高度相关。其中:冰点渗透压与电导率高度相关,r=0.884,P<0.01。冰点渗透压对电导率的直线回归方程为Y=70.74+28.56X;折射渗透压与电导率高度相关,r=0.805,P<0.01。折射渗透压对电导率的直线回归方程为Y=159.805+28.017X;冰点渗透压与折射渗透压高度相关,r=0.933,P<0.01。冰点渗透压对折射渗透压的直线回归方程为Y=16.319+0.866X。结论在尿糖、尿蛋白阴性的情况下,冰点渗透压、折射渗透压和尿液电导率三者之间可相互转化,在日常尿沉渣检查中可通过电导率估出尿渗透压值,且结果快速、准确、可靠,提高了UF-100尿沉渣分析仪的检测范围,有利于正确估计肾脏浓缩稀释功能。 [Objective] To explore the correlation among urine freezing point osmotic pressure, refraction osmotic pressure and urine conductivity. [Methods] The collected daybreak urinary samples of 248 patients whose sugar and protein is negative from the out patients or in patients were detected by algeoscopy, refractometer, sysmex UF- 100 automated urinalyer respectively, and the results were analyzed in matched pair. [Results] There was strong correlation among freezing point osmotic pressure, refraction osmotic pressure and conductivity. Freezing point osmotic pressure was highly correlated to conductivity, r=-0.884, p〈0.01. The linear regression equation of Freezing point osmotic pressure against conductivity was: Y=70.74+28.56X; Refraction osmotic pressure was highly correlated to conductivity, r=0.805, p〈0.01. The linear regression equation of refraction osmotic pressure against conductivity was: Y=159.805+28.017x; Freezing point osmotic pressure was highly correlated to refraction osmotic pressure, r= 0.933, p〈0.01, The linear regression equation of freezing point osmotic pressure against refraction osmotic pressure was: Y=16.319+0.866x. [Conclusions] Under the condition where urine sugar and protein is negative, there are transformation among freezing point osmotic refraction osmotic pressure and conductivity. We can estimate urinary osmotic pressure by its conductivity in daily routine urinary sediment. The results were accurate, reliable, and quick. It can expand the detection range of Sysmex UF-100 automated urinalyer which is beneficial for estimating renal concentration and diution function properly.
出处 《中国医学工程》 2007年第2期163-165,共3页 China Medical Engineering
关键词 冰点渗透压 折射仪 电导率 freezing point osmotic pressure refractometer conductivity
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