Objective Study the drug resistance trend of Helicobacter pylori (H.pylori) based on polynomial regression equation to provide reference for clinical medication.Methods A total of 3496 clinical isolates of H.pylori collected from 2007 to 2012 were used for drug sensitivity test of six common-used drugs to evaluate the resistance rate of each drug.Correlation analysis were performed on each of the two drugs.Constructed log curve,exponential curve,inverted exponential curve,polynomial curve and sigmoid curve for each kind of drug resistance rate and did regression analysis for each drug resistance rate.Results According to the results of drug sensitivity test from 2007 to 2012,amoxicillin,furazolidone and gentamicin had strong antibacterial activity to H.pylori and got a lower drug resistance rate.The resistance rate of levofloxacin and clarithromycin were increasing year by year and the resistance of metronidazole had been maintained at a high level.The predictive drug resistance rate of clarithromycin,metronidazole,levofloxacin,amoxycillin,gentamicin and furaxone in 2013 were 21.49％,95.47％,20.70％,0.10％,0.09％ and 0.10％,respectively.The results were consistent with those of H.pylori infection rate in Southeast China performed by Jianzhong Zhang.Conclusion A certain quantitative relationship exists between the time and the helicobacter resistance rate.The established model can be used to predict the future trend of H.pylori resistance rate.It can be used to guide clinical rotation,the restriction of the use of antibiotics,and to reduce the generation of antibiotic resistant bacteria.

【Objective】 To conduct the laboratory quality assessment between 12 blood stations in Hebei province, analyze the results and explore the accuracy and comparability of testing, so as to improve the level of testing ability and quality management. 【Methods】 With reference to the external quality assessment rules of National Center for Clinical Laboratories and combined with the instructions of quality assessment samples, daily testing process of the laboratories were assessed. The quality indicators include blood cell count (WBC, RBC, Hb, HCT, MCV, MCH, MCHC and PLT), biochemical items (TP) and coagulation parameters (FIB and FⅧ). 【Results】 There are still problems in laboratories in terms of personnel operation, instrument maintenance and the impact of different reagent batches, especially in biochemical items and coagulation parameters. The pass rate of biochemical items was the lowest, only 72.75%, and that of blood cell count was the highest, reaching 98.75%. 【Conclusion】 With the progress of the project, the quality monitoring level of daily blood sampling tests in the quality control laboratory of each blood station has been improved. However, it is still necessary for each laboratory to improve the testing ability and quality management to a higher level in Hebei.