Westgard多规则控制方法结合Levey-Jennings质控图在TEG日常室内质控中的应用

Westgard multi-rule control method combined with Levey-Jennings quality control chart in daily indoor quality control of TEG

目的通过应用Westgard多规则控制方法结合Levey-Jennings质控图对TEG分析仪进行日常室内质量控制与分析,持续改进检验质量,提高实验室TEG检测的精密度。方法应用Westgard多规则控制方法、Levey-Jennings质控图及同一批号质控品每日对TEG测定参数R值、K值、Angel值、MA值连续12个月进行室内质控监测分析,分别计算均值(x)、标准差(SD)和变异系数(CV%)来观察检验控制效果。结果应用此质量控制方法来及时纠正、分析和改善TEG室内质量控制中的系统错误,R值、K值、Angle值、MA值平均CV%值2019年1~6月为20.33%、13%、3.6%、9.65%;7~12月则分别减低为9%、3%、1.28%、5.35%。结论 Westgard多规则控制方法及Levey-Jennings质控图用于TEG室内质控检测结果可提升TEG临床检测结果的精密度。

Objective To continuously improve the routine indoor quality and precision of TEG by applying Westgard multi-rule control method combined with Levey-Jennings quality control chart. Methods The parameters R, K, Angel and MA of TEG were monitored and analyzed in the laboratory for 12 consecutive months using the same batch of quality control products via Westgard multi-rule control method combined with Levey-Jennings quality control chart, and the mean(), standard deviation(SD) and coefficient of variation(CV%) were calculated to observe the control effect. Results We applied this quality control method to timely correct, analyze and improve the system errors in TEG indoor quality control.The CV% value of R, K, Angle and MA were 20.33%, 13%, 3.6% and 9.65%, respectively, during January to June 2019, but decreased to 9%, 3%, 1.28% and 5.35%, respectively, during July to December 2019. Conclusion The application of Westgard multi-rule control method and Levey-Jennings quality control chart in TEG indoor quality control test can improve the precision of TEG clinical test results.