Application Of Six Sigma Quality Management Method In Performance Evaluation And Quality Control Of Clinical Hematology Routine Tests

Objective:To analyze the quality control results of clinical hematology routine test items by6σ quality management method,and evaluate its performance at the Sigma level,then individually design hematology routine test project quality control method and improve the method.Methods:The variation coefficient(CV%)of indoor quality control of 8 routine items of WBC,RBC,HGB,HCT,PLT,MCV,MCH and MCHC in the Department of Clinical Laboratory of the First Affiliated Hospital of Nanchang University from August 2018 to August 2019 was collected,Combined with the statistical results of the inter-room quality evaluation of the whole blood cell count of the Ministry of Health Clinical Laboratory Center in 2019 to calculated the bias(Bias%),and the total allowable error(TEa%)came from the health industry standard WS/T 406-2012,and the software of information network calculate the σ value and draw a standardized sigma performance validation chart to evaluate the performance of project analysis calculate the quality Goal index(QGI),propose a priority improvement method and select an appropriate quality control scheme.Result:The clinical hematology routine test project performance only HGB,MCV two projects to reach the world-class level of 6σ,PLT performed well(5≤σ<6),WBC,HCT,MCH and MCHC performed well(4≤σ<5),RBC showed criticality(3≤σ<4),and and multiple combination of quality control rules should be selected to ensure quality.By calculating the QGI,WBC and PLT need to improve the precision(QGI < 0.8),RBC,HCT,MCH,MCHC need to improve the precision and accuracy at the same time(0.8 ≤ QGI ≤ 1.2).In conclusion:6σ quality management can efficiently evaluate the clinical hematology routine test project,conveniently design a individually quality control program,and effectively guide the inspection quality improvement.