老年患者动静脉血电解质检测结果的相关性分析

目的 探讨老年患者动脉血与静脉血电解质水平的相关性.方法 随机选取本院2012年1-12月住院的57例老年（61～95岁）患者,同时测定动脉血和静脉血的钾、钠、氯离子浓度,并对所得资料进行相关和回归统计分析.结果 动脉血钾（4.03±0.67） mmol/L低于静脉血钾（4.22±0.69） mmol/L（P＜0.01）;动脉血钠（136.63±5.97） mmol/L低于静脉血钠（141.84±6.16） mmol/L（P＜0.01）;动脉血氯化物（108.71±7.87） mmol/L高于静脉血氯（104.08±6.62） mmol/L（P＜0.01）;动静脉血钾之间、血钠之间、氯化物之间均呈正相关,相关系数分别为0.987（P＜0.01）,0.950（P＜0.01）,0.967（P＜0.01）;存在直线回归关系.结论 老年患者动脉血与静脉血电解质检测结果有差异,但呈正相关,当不能获得静脉血检测结果时,动脉血相关的检测指标经校正后可作为较好的参考.

Correlation of electrolytes measurements between arterial blood and venous blood in senile patients

Objective To assess the correlation of electrolytes measurements between arterial blood and venous blood in senile patients. Methods Measurements of potassium, natrium and chloridion concentrations in 57 senile patients （61-95 years old） who underwent arterial blood gas analysis and simultaneous venous blood analysis admitted into our hospital from January to December in 2012 were compared. The data were analyzed by correlation and regression analysis. Results The concentration of arterial blood potassium （4.03 ±0.67） mmol/L was significantly lower than venous blood potassium （4.22 ±0.69） mmol/L （P 〈 0.01）, so was arterial blood natrium （136.63 ± 5.97） mmol/L vs venous blood natrium （141.84± 6.16） mmol/L （P 〈 0.01）. While the concentration of arterial blood chloridion （108.71 ± 7.87） mmol/L was significantly higher than venous blood chloridion （104.08 ±6.62） mmol/L （P 〈 0.01）. Electrolytes concentrations in venous blood were positively correlated with the concentrations in arterial blood, coefficients of correlation were 0.987 （P 〈 0.01）, 0.950 （P 〈 0.01） and 0.967 （P 〈 0.01） respectively, and they all had the linear regression relationship. Conclusion The electrolytes examination results between arterial blood and venous blood are different and they are positively correlated. When the examination results of venous blood cannot be obtained, the revised measurements of arterial blood can be a preferable reference.