Objective To design and apply the quality tracking system for central sterile supply department,complete the quality tracking of sterile medical products,rental surgical devices and high level disinfected products,conform the second-class storage management and human resource management.Methods By using the modern technology of WiFi wireless network,mobile PDA technology and two dimensional barcode,through establishing the team,collecting the data,installing the hardware,debugging the system,training and education,the development and application of the system was completed.Results The system has been operated for two years nearly in central sterile supply depamnent and other departments in hospital,it showed great practicability and convenience,covered all the daily work in central sterile supply department,achieved the information management in mobile digital way.Conclusions The application of digital mobile quality management system accelerates the central sterile supply department in standard way and realizes scientific in strategic decision and management.

Objective To establish a method for very long chain fatty acids( VLCFA )with liquid chromatography-tandem mass spectrometry( LC-MS/MS ). Methods One hundred and one healthy cases and 35 suspected ALD patients collected from April to June in 2009 were enrolled into this study. Quantitative analyzed the concentrations of VLCFA in serum was performed using liquid chromatography-tandem mass spectrometry. The precision, accuracy and recovery were analyzed, and the stability of VLCFA concentration of sample under room temperature and repeated freeze-thawing were also investigated. Serum levels of VLCFA in 101 normal cases were determined and analyzed statistically. The results for the 35 randomly chosen serum samples were compared with those from MDI in Germany. Results Serum VLCFA were separated well under these gradient condition with small interference. The linear range of C22:0 was from 2 mg/L to 64 mg/L, the recovery was 99. 92% -102. 05%, and the relative standard deviation ( RSD ) of intra-day and inter-day was less than 6% and 9% respectively. For C24:0 they were 2-64 mg/L. 95. 12%-100. 44%. ≤6%, ≤7%,respectively. For C26:0, they were 0-8 mg/L, 92.21%-103.71%, ≤7%, ≤8%, respectively. The accuracy of C22: 0,C24:0 and C26:0 were among 85% to 115%. The samples could be stable within 12 h at room temperature and repeated 10 times freeze-thawing. The values of VLCFA in 101 normal cases followed a normal distribution and the measured values were C22:0 =( 19. 43 ±4.43 ) mg/L,C24:0 =( 19. 10 ±4. 58 )mg/L, C26:0 = ( 0. 21 ± 0. 11 ) mg/L, the ratio of C24: 0/C22:0 and C26:0/C22: 0 were ( 0. 99 ± 0. 13 )and ( 0. 01 ±0. 01 ) respectively. The statistical analysis showed the concentration of C26:0 in adults ( 0. 18±0. 10 ) mg/L and children ( 0. 21 ± 0. 08 ) mg/L, C24: 0/C22:0 in adults ( 1.01 ± 0. 10 ) and children ( 0. 99 ±0. 14 ) has no significant( t values were 1. 439,0. 806, respectively, all P ＞ 0. 05 ); the ratio of C24:0/C22:0 in male (1.05 ± 0. 10 ) and female (0.97 ± 0. 10 ) has significant difference ( t =3. 394,P =0. 001 ). Compared the values determined by MDI laboratory, the results of C22: 0( 16. 93 ±4. 30 ) mg/L,C24: 0( 19. 57 ± 6. 40 ) mg/L by this method and C22:0 ( 13.85 ± 3. 17 ) mg/L, C24:0( 16. 10 ±5.84 ) mg/L by MDI have significant differences( t = 8. 401 ,P =0. 000;t =9. 914,P =0. 000 ),but C26:0( 0.68 ±0.48 ) mg/L, C24:0/C22:0( 1.20 ±0.40 ), C26: 0/C22:0 ( 0.04 ±0.04 )by this method and C26: 0( 0. 65 ± 0. 67 ) mg/L, C24:0/C22: 0( 1.19 ± 0. 43 ), C26:0/C22: 0 ( 0. 05 ± 0. 05 )by MDI have no differences( t values were 0. 372,0. 317,0. 945 ,respectively ,all P ＞0. 05 ). Conclusions The quantitative analysis method for serum very long chain fatty acid using LC-MS/MS is accurate, sensitive,specific and stable. It could provide important biochemistry information for diagnosis in clinic.

Objective To establish a LC-MS/MS method for the determination of MMA in serum,and provide a assay for the diagnosis and screening of methylmalonic academia in the clinic. Methods MMA was extracted from 205 serum samples from healthy controls and 146 serum samples from patients with liquidliquid extraction method with MTBE as the extraction solvent. The supernatant was transferred to a tube and dried with nitrogen gas. Then the residual was derived with HCI-BuOH mixed agent to give a product, which was analyzed directly by LC-MS-MS system with a gradient elution, selective reaction monitor, a Discovery C18 column (50 mm × 2. 1 mm ,5 μm) as the isolation column and a mobile phase consisting of methanol and water (0. 1% formic acid, V/V), respectively. The concentration of MMA was detected with the isotope internal standard method. The stand curve was employed with a series of calibrators. The recovery was estimated with the 3 serum samples with the concentrations of 2, 25, 80 μg/L respectively. The accuracy,precision and stability were also tested with quality control samples. Moreover, the range of concentrations in healthy people were detected to investigate the influence of hemolysis on the detection results. Thirteen samples were randomly tested according to the digital chart. The testing results were compared with the results provided by Medical Diagnositic institution (MDI) in Germany. The paired t-test was applied to statistical analysis. Results The linear range of this method was 2-100 μg/L, and the correlation coefficient (R2 ) was more than 0. 995. The retention time of MMA derivative was 10. 5 min. Succinic acid and MMA were not found to interfere with each other. The within-run RSD was less than 6. 4%, and the between-run RSD was less than 5.0%. The recovery rates were from 96. 42% to 103. 33%. The limit of quantification was 1 μg/L.The accuracies of the method were form 94. 2% to 108. 2%. The samples were stable for 6 h at room temperature and stable for 70 d even keep at - 20 ℃. The samples were stable after 10 freeze-thaw cycles. The derivatives of MMA were found to be stable at least for 5 d at 4 ℃. The medians of the hemolysis group and the normal group were 102.53 (13.84-302.33) μg/L and 39.52 (11.94-203.08) μg/L,respectively. There was significant difference between the 2 groups ( T = 8, P ＜ 0. 05 ). The medians of comparison test in our laboratory and the MDI were 32. 82(24. 50-100. 42) μg/L and 32. 20(26. 65-93. 30)μg/L There was no significant difference between the 2 groups( T=7 ,P ＞0. 05 ). The mean value (-x± s)of 158 healthy adults( 18-58 years old) and 47 healthy teenages( 1-17 years old)were ( 18.46 ± 10.49 )μg/L and (22. 38 ± 11.45) μg/L, respectively. Conclusions A LC-MS/MS method for analysis of MMA in serum is established successfully. The quantitative method is simple and accurate with good sensitivity,specificity and repeatability. The method can be applied for diagnosis, screening and monitoring of methylmalonic acidemia.

Objective:To investigate the prognostic significance of anemia in elderly patients with stable coronary artery disease treated by percutaneous coronary intervention(PCI).Methods:In this retrospective cohort study, 180 patients with stable coronary artery disease aged ≥60 years undergone percutaneous coronary intervention and with complete clinical data, admitted to Nanjing Meishan Hospital between June 2016 and December 2017, were selected.Baseline clinical data of the patients were collected, including hemoglobin, C-reactive protein, lipids, fasting glucose, glycated hemoglobin, blood creatinine, and left ventricular ejection fraction on cardiac color ultrasound.The endpoints of the follow-up included major adverse cardiac events(MACE), such as all-cause death, non-fatal myocardial infarction, and non-fatal stroke.According to the hemoglobin level, participants were divided into an anemia group(n=32)and a non-anemia group(n=148). Clinical data of the two groups were compared, and the Kaplan-Meier method and multivariate analysis with the Cox regression method were used to evaluate the effect of anemia on the occurrence of MACE in elderly patients with stable coronary artery disease treated by PCI.Results:The median duration of the follow-up of the 180 patients was 702.5 days and MACE occurred in 27(15.0%). Compared with the non-anemia group, the anemia group had a higher age, C-reactive protein level and MACE ratio, lower levels of total cholesterol, triglycerides, low-density lipoprotein cholesterol and the glomerular filtration rate, and higher proportions of patients with smoking history and patients with dyslipidemia( P<0.05). Kaplan-Meier curves suggested that the incidence of MACE in the anemia group was higher than that in the non-anemia group[37.5%(12/32) vs.10.1%(15/148), P<0.05]. Multivariate analysis with the Cox regression method showed that the risk of MACE in the anemia group was 2.91 times higher than that in the non-anemia group( HR=2.91, 95% CI: 1.13-7.48, P<0.05). Conclusions:Anemia is an independent predictor of MACE in elderly patients with stable coronary artery disease after PCI.