摘要
【目的】使用Bland-Altman分析法评价床边血气分析仪检测血红蛋白(Hb)及血细胞比容(HCT )结果与中心实验室检测结果是否具有相关性及一致性。【方法】对100份动脉血标本分别使用迈瑞BC-5800血液分析仪及GEM Premier 3000血气分析仪行Hb及 HCT检测,并对结果行相关性分析及Bland-Altman分析。【结果】两种方法所测得Hb的相关系数 r =0.807,P <0.01,回归方程为Y=24.163+0.742X ,两组方法所测得 HCT的相关系数 r =0.709,P <0.01,回归方程为 Y=8.881+0.635X ,两组数据均有较好的相关性。但经Bland-Altman法分析,Hb及HCT检测95%的可信区间均在临床可以接受的界限之外,一致性欠佳。【结论】GEM 血气分析仪与BC血液细胞分析仪方法测得指标均有较好的相关性,但一致性欠佳。床边即时检验尚无法完全替代传统检验方法。
Objective To assess the correlation and concordance of the results of bedside blood gas analyzer (GEM Premier 3000) and blood cell analyzer (BC-5800) for measuring hemoglobin and hematocrit with the results of central laboratory assessed by Bland-Altman method .[Methods]Hemoglobin and hematocrit of 100 arterial blood samples were measured by Mairui BC-5800 blood analyzer and GEM Premier 3000 analyzer .The results were taken for correlation analysis and Bland-Altman analysis .[Results] The correlation coefficient(r) of hemoglobin measured by two methods was 0 . 807( P〈0 .01) ,and the regression equation was Y =24 .163+0 .742X .The correlation coefficient (r) of hematocrit measured by two analyzers was 0 .709( P〈0 .01) ,and the regression equation was Y=8 .881+0 .635X .There was good correlation of the data between two methods .Bland-Altman analysis showed that 95% confidence intervals of either hemoglobin or hematocrit were not within clinically acceptable range .The concordance of measurements by two analyzers was unsatisfactory .[Conclusion] There is good correlation of hemoglobin and hematocrit between two methods ,but the concordance is unsatisfactory .Bedside immediate measurement can not completely substitute for conventional measurement .
出处
《医学临床研究》
CAS
2014年第7期1255-1258,共4页
Journal of Clinical Research
基金
上海市卫生局青年科研项目(20114y119)