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患者数据实时质量控制在实验室内血细胞分析仪比对中的应用

Application and efficacy of patient-based real-time quality control in intralaboratory comparison of various hematology analyzers

摘要:

目的:探讨基于患者数据的实时质量控制(PBRTQC)方法在实验室内不同血细胞分析仪间比对中的应用价值。方法:收集2020年4月1日至2021年3月31日河北省儿童医院检验科5台不同品牌和不同型号血细胞分析仪中患者白细胞计数及每日新鲜静脉血比对结果,首先应用PBRTQC专业智能软件系统进行参数设置、程序建立及性能验证,选择白细胞计数低浓度(2.5~4.5)×10 9/L、中浓度(6.0~8.0)×10 9/L、高浓度(12.0~14.0)×10 9/L为3个比对浓度范围,分别利用指数加权移动平均法(EWMA)和中位数法对白细胞计数进行计算和比较分析,并将EWMA和每日新鲜血比对法所得设备间偏差进行比较分析。以WS/T 406-2012《临床血液学检验常规项目分析质量要求》中白细胞可比性验证要求允许偏差±7.50%作为白细胞计数仪器间比对相对偏差标准。 结果:(1)在统计周期共纳入38 313个样本结果,基于本室白细胞计数患者数据建立的EWMA质控法,出现预警结果70个,预警率为0.183‰,误差检出概率为100%,假失控概率为0,EWMA质控效能符合质量目标。(2)以高浓度为例,5台血细胞分析仪结果可比性监测中,每周比对及每月比对时EWMA与中位数法结果符合率为100%(46/46),每日比对中,EWMA可以保持比较稳定的监测效能。(3)在所选自然月中,EWMA法与新鲜血比对法一致率为95.24%(20/21)。结论:PBRTQC法可作为室内质控的补充,对实验室内不同品牌和不同型号血细胞分析仪设备间检测结果的一致性进行连续有效的监测,以降低质量风险和实验室运行成本,提高实验室的管理效率。

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abstracts:

Objective:To evaluate the application value of patient-based real-time quality control (PBRTQC) algorithms in intralaboratory comparison between various hematology analyzers.Method:From April 1 st 2020 to March 31 th 2021, data of white blood cell (WBC) counts and daily comparison results of fresh venous blood, measured by five hematology analyzers, were collected at the Department of Laboratory Medicine in Hebei Children′s Hospital. First, the professional intelligent PBRTQC software system was applied to conduct the parameter setting, program establishment, and performance verification. Three concentration ranges of WBC were selected, low concentration (2.5-4.5)×10 9/L, medium concentration (6.0-8.0)×10 9/L and high concentration (12.0-14.0)×10 9/L for the comparison. Next, WBC counts were calculated with both of the EWMA and median methods, the results were then analyzed by PBRTQC using the module of"intralaboratory comparison of hematology analyzers". Finally, bias of intralaboratory comparison among various hematology analyzers analyzed by means of EWMA and daily comparison results of fresh venous blood were compared. Based on the standard of WS/T 406-2012,allowable error ±7.50% in WBC counts was set as the relative bias standard among different instruments. Results:(1) A total of 38 313 sample results were included, there were 70 warning results out of these samples based on the EWMA quality control method established on the data of patients with white blood cell count in our laboratory, with an early warning rate of 0.183‰, a probability of error detection of 100%, and a probability of false loss of control of 0. EWMA quality control efficiency met the quality objectives. (2) In the comparison monitoring of the results of 5 blood cell analyzers at high concentrations, the coincidence rate between EWMA and median method were both 100% (46/46) in weekly and monthly comparison, and EWMA could maintain a relatively stable monitoring efficiency in daily comparison. (3) In the selected natural month, the consistency rate between EWMA method and fresh blood comparison method was 95.24% (20/21).Conclusion:PBRTQC can be used as a valuable supplementary tool of IQC to continuously and effectively monitor the consistency of data derived from intralaboratory hematology analyzers with different bands and types, which can not only reduce the risk of quality and operating costs, but also improve the efficiency of laboratory management.

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作者: 黄珊珊 [1] 李贵霞 [1] 黄慧 [1] 王会茹 [1] 王盛华 [1] 白晓萌 [1] 周珊珊 [1]
期刊: 《中华检验医学杂志》2023年46卷3期 310-318页 ISTICPKUCSCD
栏目名称: 论著
DOI: 10.3760/cma.j.cn114452-20220804-00452
发布时间: 2024-03-19
基金项目:
河北省医学科学研究重点课题 Key Project of Medical Science Research in Hebei Province
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