Influencing factors on thrombin time assay by coagulation specimen insufficient centrifugation / 医疗卫生装备

Objective To investigate the influencing factors on thrombin time (TT) assay to ensure the accuracy of the detection results.Methods Totally 3 out-and in-patients from January to July 2015 with normal results of prothrombin time (PT),activated partial clotting enzyme live time (APTT) and fibrinogen (FIB) were selected,whose detection results were not satisfactory.The specimen underwent re-centrifugation,and then Beckman ACL TOP700 automatic coagulation analyzer was used to detect four coagulation indexes.The detection results were compared with those before re-centrifugation,and the differences between the results were analyzed statically.Results The values of PT,APTT and FIB of the three patients before and after re-centrifugation were (10.8,11.5,9.7 s),(29.5,32.7,25.2 s),(2.49,3.12,2.85 g/L) and (10.9,11.3,10.0 s),(30.4,31.5,25.9 s),(2.31,3.28,2.67 g/L) respectively,and the differences between the results were not significant (with t ranging from 0.627 to 1.719 and P＞0.05).The values of TT of the three patients before and after re-centrifugation were (66.51,127.3,89.62 s) and (12.2,15.7,13.8 s) respectively,and there were obvious differences between the values (with t ranging from 51.743 to 79.167 and P＜0.001).Conclusion Insufficient centrifugation has high influences on the detection result of TT except other coagulation indexes,and re-centrifugation is necessary for the accuracy of TT value to eliminate misdiagnosis.

Present Situation Investigation of Trace Elements of 0～7 Years Old Children in Shenzhen District / 现代检验医学杂志

Objective To understand the Shenzhen Dapeng new district and Longhua district 0～7 years old children in copper (Cu),zinc (Zn),calcium (Ca),magnesium (Mg),iron (Fc) and lead (Pb) 6 kinds of trace elements,in order to establish the reasonable dietary structure and provide a scientific basis for scientific and rational supplement of trace elements.Methods Collected 2 190 cases of 0～7 years old children for health physical examination in Dapeng New District Maternal and Child Health Care Hospital of Shenzhen form March to November 2015.According to the age,they were divided into the baby group (0～1 years old) of 637 cases,children group (2～4 years old) of 723 cases and preschool group (4～7 years old) of 830 cases of three groups.Used QL8000 automatic whole blood trace elements analyzer to test Fe,Zn,Ca,Cu,Mg and Pb 6 kinds of trace elements in whole blood,and the detection results were statistically analyzed and compared.Results Test results of 5 kinds of whole blood trace element(Fe,Zn,Ca,Cu,Mg) had different degrees lack in 2 190 cases of children aged 0 ～7,and lack of different level,lack of rate were 36.26％,32.83％,14.20％,0.64％ and 0.50％,respectively.Fe and Ca deficiency in young children group was most serious,lack of Zn in infant group was most serious,other microelement lack rate had no statistically significant difference between different groups (P＞ 0.05).Pb poisoning rate was 15.71％,the Pb poisoning rate decreases along with the age growth,and boys than girls,the difference was statistically significant (x2=3.15,P ＜0.05),different gender children other microelement lack rate differences had no statistical significance between the results.Conclusion The whole blood trace element of 0～7 years old children had different lack,mainly by Fe,Zn and Ca deficiency in Shenzhen Dapeng New District and Longhua District.But Children's Pb poisoning problem could not be ignored.Therefore,to streng then the 0～ 7 years old children's whole blood trace elements level survey,microelement lack of prevention and treatment of children is of great significance.

Prevalence Situation Investigation and Study on E Viral Hepatitis in Different Types of Chronic Hepatitis / 现代检验医学杂志

Objective To understand the different types of chronic hepatitis group in shenzhen area E viral hepatitis (hepatitis E infection status and provide scientific basis for the prevention and treatment of hepatitis E.Methods Randomly collected from July 2013 to June 2015 in shenahen Longhua New District People’s Hospital without hepatitis normal physical exami-nation and treatment group 1746 cases as control group,chronic hepatitis B viral hepatitis (hepatitis B)the crowd of 1 320 cases of hepatitis B,chronic viral hepatitis C (HCV)population group,615 cases of hepatitis C,respectively,the application method of enzyme-linked immunosorbent assay (ELISA)to detect serum hepatitis E antibody (anti HEV IgG)-IgG,ana-lyzed of different types of hepatitis a crowd hepatitise infection status,and compared the hepatitise infection rate if there was a difference between the different groups.Results 1 746 cases of control group in serum anti HEV-IgG positive rate was 3.49% (61/1 746),4.22% of men and women in 2.68%.1 320 cases of hepatitis B group was 10.9%,12.29% of men and women in 8.23%.615 cases of C group was 10.2%,12.35% of men and women in 7.64%.Hepatitis B and C group of HEV-IgG positive rate compared with control group difference was statistically significant (χ2 =9.163~9.405,P 0.614),and hepatitis E infection rate than women,men was statistically significant difference (χ2 =2.873~4.025,P <0.05).Conclusion Chronic hepatitis B and C viral hepatitis crowd anti HEV-IgG positive rate was higher than normal people,no hepatitis hepatitis E infection rate among men than women.Therefore,strengthens to the chronic hepatitis B and C viral hepatitis a crowd of early discovery,early diagnosis and early treatment,to reduce hepatitis E infection rate has an important significance.

Clinical value in early diagnosis of myocardial damage with h-FABP, cTnI, Mb and CK-Mb joint detection to HFMD in children / 中国医学装备

Objective:To explore the early diagnostic value of joint detection heart type fatty acid binding protein (h-FABP), troponin (cTnI), myoglobin (Mb) and creatine kinase isoenzyme Mb (CK-Mb) in children's hand, foot and mouth disease (HFMD) combined myocardial injury.Methods: Choice 276 cases of HFMD as observation group, and 40 healthy children as control group. Were determined h-FABP, cTnI, Mb and CK-Mb content in serum at different time, analysis of various index level differences and dynamic change between groups in different period.Results: Among 276 patients with HFMD, 57 cases of diagnosed myocarditis, concurrent rate was 20.65%. Within 0~3 hrs, abnormal rate of h-FABP, cTnI, Mb and CK-Mb in serum were 20.29%,1.81%,14.86% and 2.90%, in 276 cases of children with HFMD. The abnormal rate of h-FABP and Mb was obviously higher than that of cTnI and CK-Mb, the results between the difference was statistically significant (x2=35.132,x2=37.063,P<0.01),h-FABP abnormal rate is higher than CK-Mb, the difference was statistically significant(x2=3.175,P<0.05). the,serum h-FABP cTnI, Mb and CK-Mb concentrations in children of HFDM combined with suspicious viral myocarditis were significantly higher than that of control group, the difference had statistical significance (t=37.625,t=23.172,t=17.261,t=18.724,P<0.01). H-FABP and Mb concentration on HFMD combined myocarditis began to rise after the occurrence of 0~3 h, 4~9 h to peak, CTnI and CK-MB 4~9 h to rise, 10~12 h to peak, has been in a higher level in the 12~72 h.Conclusion: HFMD combined myocarditis had a higher incidence, h-FABP is the most sensitive indicator of early diagnosis, followed by Mb. CTnI and CK-MB are parameters of diagnosis sensitivity for HFMD combined with myocarditis in middle-late period.

The performance evaluation of emergency immunological parameters in Johnson Vitros 5600 fully automatic biochemical analyzer / 中国医学装备

Objective:To have the performance verification of Johnson Vitros 5600 fully automatic biochemical analyzer (hereinafter referred to as Vitros 5600 analyzer) emergency immunological parameter is to provide more accurate and more efficient service for the patients in emergency inspection items.Methods: According to the clinical laboratory standards institute (CLSI) evaluation criterion and Johnson validation plan, we verified the precision, accuracy, linear range, reference range, and carry pollution rate detection indexes of Myoglobin, Troponin I (TropI), N-terminal brain natriuretic titanium (NTproBNP) and total beta human chorionic gonadotropin (TβHCG) about the Vitros 5600 analyzer emergency projects evaluated the performance of the analyzer.Results: The batch precision CV of Myoglobin, TropI, NTproBNP and TβHCG tested by Vitros 5600 analyzer is 0.58~2.02%, < 2.5%, and the inter assay CV is 1.43~3.15%, < 5.0%. Accuracy relative bias is -3.52~4.21%. Linearity relationship is good within the scope of testing,r2 is 0.9836~0.9998, and the slope (a) is 0.9865~1.0207. Carry pollution rate is 0.096~0.180%. Reference range verification coincidence rate is R≥95%.Conclusion: The detection index performance of Vitros 5600 analyzer detecting immune emergency projects is good. It can meet the demand of emergency immune inspection work.

Investigation and Study on the Present Situation of Genetic Defect Carrying Rate in Unmarried Young Men with Thalassaemia / 现代检验医学杂志

Objective To understand the present situation of the rate of carry genetic defect in Unmarried young men with thalassaemia in Shenzhen,which will provide a scientific basis for correct mating.Methods Randomly selected 6 182 cases of unmarried young people from March 2014 to October 2015 to hospital physical examination,Used Sysmex XN-9000 auto-matic blood cell sextant and erythrocyte osmotic fragility test to sccreen preliminarily for globin generation barrier anemia. The average red blood cell volume (MCV)≤82 fl and the average content of red blood cell (MCH)≤27 pg or osmotic fra-gility of red blood cells rate<60% of the population was made hemoglobin electrophoresis analysis.To early screening posi-tive by PCR,it was done reverse dot hybridization method for gene diagnosis,and the results were analyzed.Results 6 182 cases of unmarried young men at the beginning of globin generation barrier anemia screen positive rate was 17.3% (1 069/6 182),including suspectedα-was 12.2% (752/6 182)and suspiciousβ-was 5.1% (317/6 182).Gene diagnosis of globin generation barrier anemia positive rate was 11.6% (717/6 182),theα-was 6.7% (413/6 182),β-was 3.4% (209/6 182) and compoundαβ-was 1.5% (95/6 182).α-genetic defect types were mainly--SEA/αα,-α3.7/ααand-α4.2/ααand defect rate were 60.8%,23.5% and 10.4%,respectively.β-gene defect types are mainly CD41/42,CD17 and-28,defect rate were 41.1%,28.2% and 12.9%,respectively.Conclusion Unmarried young men in shenzhen area globin generation barrier ane-mia has certain carrying rate,local family planning department attaches great importance to it.Strengthen the unmarried young men globin generation barrier anemia screening,to guide the healthy birth mating and prevention of severe pauper’s birth,improve the rate of eugenic and superior nurture,has the vital significance.

ICU Patients with Secondary Pulmonary Tuberculosis Merger Lower Respiratory Infection of Pathogenic Bacteria Distribution and Drug Resistance Analysis / 现代检验医学杂志

Objective To understand Shenzhen Longgang,guangming and longhua new district four district hospital ICU pa-tients with secondary pulmonary tuberculosis merger lower respiratory infection of pathogenic bacteria distribution and drug resistance status of provide a reference for clinical diagnosis and rational use of antibiotics therapy.Methods Random selec-tion from February 2013 to October 2015 in the three district hospital ICU diagnosis of secondary pulmonary tuberculosis patients with lower respiratory infection in 593 cases of sputum specimen pathogenic bacteria culture and drug susceptibility results were retrospectively analyzed.Results 593 cases of ICU secondary pulmonary tuberculosis patients with respiratory tract infection of the communist party of China isolated 617 strains of pathogenic bacteria,fungi accounted for 49.6% (306/617),gram negative bacilli accounted for 40.4% (249/617),gram positive cocci accounted for 10.0% (62/617).Fungal in-fection main pathogens for white smooth candida yeast and candida yeast,respectively accounted for 44.2% (273/617)and 4.5% (28/617),gram negative bacillus mainlyKlebsiellaPneumoniae,Pseudomonasaeruginosa,and H.influenzae,respec-tively accounted for 16.7% (103/617),12.0% (74/617)and 7.3% (45/617),gram-positive cocci mainly for Saphylococcus aureus and Epidermisstaphylococcus and Hemolyticstaphylococci,respectively accounted for 4.5% (28/617),3.2% (20/617)and 0.9% (5/617).Pathogenicbacteria isolated from the multiple drug resistant bacteria,present different levels of resistance to commonly used antimicrobial agents.Conclusion ICU patients with secondary pulmonary tuberculosis merger of lower respiratory tract infection pathogens to fungi and gram-negative bacilli,the most commonWhite candida,Klebsiella pneumoniae,and Pseudomonasaeruginosa,and different levels of resistance to commonly used antimicrobial agents.

Research on electrochemical luminescence analyzer test anemia indicators of performance verification methodology / 中国医学装备

Objective:To detect anaemia parameter methodology performance for validation of Roche Cobas E601 automatic electrochemical luminescence immunity analyzer.Methods:Recommended by the American association of clinical laboratory standardization (CLSI) method was developed for the determination of folic acid, iron, protein, and this precision, accuracy, linear range, sensitivity, biological reference range and carry pollution index, and validated.Results: Cohas E601 determination of folic acid, iron, protein and precision, the daytime in this batch variation coefficient were 3.03%~4.27% and 3.51%~4.68%. Relative bias must lean on(%) between -3.54%~4.46%. The scope of determination of linear range and the manufacturer to provide similar. Folic acid, iron, protein and numerical value with the determination of this instrument manufacturers provide reference interval coincidence rate were 90.0%, 85.0% and 90.0% respectivel. Instrument to detect carry pollution rate is 0.04%~0.16%. CohasE601 detection sensitivity were 0.23 ng/ml, 0.21 ng/ml and 0.19 pg/ml.Conclusion: Cobas E601 detect folic acid, iron, protein and good performance of this methodology, but manufacturers provide biological reference range is not suitable for the local crowd, should establish the corresponding normal reference range.

Present Situation Investigation of Red Blood Cells Glucose-6-Phosphate Dehydrogenase Dificiency of Pregnancy Couple in Baoan District of Shenzhen / 现代检验医学杂志

Objective To understand red blood cells glucose-6-phosphate dehydrogenase (G6PD)dificiency of pregnancy cou-ple in baoan district of Shenzhen,in order to draw the attention of society.Methods Collected 6 574 cases of couples of child-bearing age (3 192 males and 3 382 females),in Baoan District People’s Hospital,from February to November 2013. Venous blood was collected using EDTA anticoagulant blending respectively,the improvement of red bloodcells and glucose-6-phosphate dehydrogenase quantitative ratio method to determine anticoagulant G6PD/6 PGD ratio in the whole blood,with ratio <1.0 convicted of G6PD deficiency.Results 3 192 cases of male subjects,G6PD deficient 176 cases,3 382 cases of pregnant women client detection of 135 cases in the detection rate were 5.51% and 3.99%,respectively,the total detection rate was 4.73% (311/6 574),G6PD lack of rate was higher than that of pregnant women,men G6PD lack of male∶female was 1.30∶1 (176∶135),the difference was statistically significant between (χ2 =7.16,P <0.05).Conclusion The baoan district couple G6PD lack had a higher incidence of pregnancy,men were significantly higher than women,should arouse at-tention.Couples pregnancy test during pregnancy should be advocated the G6PD activity screening,the eugenics and mater-nal and child health care has important significance.

Discussion of Effect on Nitrite Test Results of Reagent Strips Placed Time on COMBI-SCAN XL Automatic Urine Analyzer / 现代检验医学杂志

Objective To explore the division XL automatic urine analyzer reagent strips placed time impact on nitrite (NIT) test results,to ensure that provide accurate and reliable experimental data for clinical,and improve clinical diagnostic rate. Methods Used a new load reagent storehouse article in the new reagents respectively in <5,30 min;1,2,3,3.5,4,4.5,5, 5.5,6,6.5,7 and 8 h,in different period,16 0.9 g/dl saline NIT in the false positive rate,and carried on the comparison to different times NIT false-positive rate analysis.Results <3.5 h NIT false positive rate was 0% (0/16),4~4.5 h false pos-itive rate was 18.8% (3/16),5~5.5 h false positive rate was 43.8% (7/16),6~6.5 h was 62.5% (10/16),7~8 h was 87.5% (14/16).More than 4 h each time comparison between NIT false positive rate,differences were statistically signifi-cant (χ2 =11.7~59.2,all P <0.01).Conclusion Division XL automatic urine analyzer reagent strips placed after 4 h,NIT false-positive rate started to rise,NIT false-positive rate was significantly increased after 5 h.Therefore,strengthen the divi-sion XL automatic urine analyzer reagent strips placed reasonable time management,should be in the < 3.5 h advisable,it helps reduce the NIT false positive rate.

Blood analyzer Sysmex XN-9000 testing in low whole blood platelet performance evaluation / 中国医学装备

Objective:To evaluate the performance of Sysmex XN-9000 automatic blood analyzer (hereinafter referred to as XN-9000) in whole blood with the low platelet (PLT). Methods:A total of 48 whole blood samples with platelet count less than 70×109/L were randomly collected from XN-9000 correlation analysis to evaluate XN-9000 the accuracy and precision of detection in low whole blood PLT and carry pollution rate, use XN-9000 and microscope count, respectively.Results: XN-9000 detection in low whole blood PLT between batch and batch of CV% 1.13% and 1.29%, respectively; XN-9000 with microscope PLT count results have high correlation, The regression equation forY=0.917X+3.217,correlation coefficientr=0.964; XN-9000 detection in low whole blood PLT carry pollution at a rate of 0.12%. Detection accuracy of PLT Bias, %(-1.25%~1.8%); Linear range(0~1206)×109/L; Clinical reportable range (0~6030)×109/L.Conclusion: The detection of XN-9000 blood analyzer is in low whole blood PLT has high precision and accuracy, carry pollution rate is extremely low, the result has the reliability, can be directly applied to clinical.

Infection Distribution and Drug Resistance Analysis of Pseudomonas Aeruginosa in Third District Hospital in Shenzhen Area / 现代检验医学杂志

Objective To understand the shenzhen longhua new district and the light district three third district hospital pseudomonas aeruginosa infection the clinical distribution and drug resistance,for clinical provides the basis for scientific and medical treatment.Methods Collected 3 176 clinical specimens in three district hospital from June 2013 to November 2014 and they were done bacteria identification with VITEK-32 bacteria identification instrument of French biomerieux.For pseudomonas aeruginosa specimens using the K-B method and trace the broth dilution method (MIC)to do drug sensitive test,and the inspection results were statistically processed.Results 3 176 specimens pseudomonas aeruginosa isolated total separation rate was 51.16% (1 625/3 176),including respiratory sputum specimens was 52.8% (858/1 625),followed by bronchoalveolar lavage and pus,were 20.1% (327/1 625)and 16.7% (271/1 625).Ward,neurosurgery and thoracic sur-geons are mainly distributed in the ICU,were 41.6% (676/1 625),15.9% (259/1 625)and 19.1% (310/1 625).Carbon penicillium,resistance to carbon alkene sensitive penicillium alkene and extensive drug resistance rate of pseudomonas aerug-inosa isolated were 67.1% (1 090/1 625),31.6% (514/1 625)and 1.29% (21/1 625).Resistance to carbon penicillium al-kene the drug resistance of pseudomonas aeruginosa from penicillium carbon alkene sensitive serious,in addition to the poly-myxin B resistance to both comparative difference was statistically significant (χ2 = 12.617~ 12.617,P 60%.Conclusion Clinical pseudomonas aeruginosa had a high separation rate,mainly comes from the respiratory tract and the distribution of the ICU ward.Penicillium carbon alkene resistant pseudomonas aeruginosa than carbon penicillium sensitive resistance was serious,should pay close attention to carbon blue mould resistant pseudomonas aeruginosa resistance development,take effective measures of preventing transmission and infection of scientific use of antimicrobials,put an end to resistance to car-bon penicillium alkene and the spread of drug resistance pseudomonas aeruginosa .

Study on the Method of 0·9 g/dl Normal Saline Dilution to Solve EDTA Dependent Pseudothrombocytopenia / 现代检验医学杂志

Objective To investigate the effects of 0.9 g/dl NaCl diluting instrument method to solve the ethylenediamine tet-raacetic acid dipotassium (EDTA)anticoagulant dependency pseudo reduce platelet syndrome (PTCP)feasibility,provides solutions to clinical laboratory PTCP more effective method.Methods From August to October of 2014 in their laboratory for PTCP cases in all 3 cases,2 ml venous blood in EDTA and citron acid sodium anticoagulation in-line blending,in the im-mediate,10,30,40 and 60 min computer detection.Collected of peripheral blood in blood thinners,respectively,0.9 g/dl NaCl solution blending,in the immediate,10,30,40 and 60 min computer detection,and compared with the manual method of ammonium oxalate.Results EDTA,citron acid sodium,blood thinners and 0.9 g/dl NaCl diluting instrument immediately detected PTCP blood PLT result compared with ammonium oxalate method,there were no statistically significant difference (t=0.943~1.537,P >0.05),10 min~60 min anticoagulant blood PLT results significantly decreased,compared with am-monium oxalate method difference had statistical significance (t = 12.413 ~ 12.413,P 0.05),40~60 min PLT test results appear significantly decreased,and the method of ammonium oxalate difference was statistically signifi-cant (t=3.175~3.175,P 0.05).Conclusion ED-TA,citron acid sodium,blood thinners and 0.9 g/dl saline diluting instrument immediately detected PLT PTCP patients were consistent with ammonium oxalate method.Citron acid sodium within 30 minutes and blood dilution method in patientswith PTCP PLT detection could achieve ideal effect,but there were still a small amount of PLT gathered and led to a slight drop in PLT.0.9 g/dl saline diluting instrument method with ammonium oxalate within 0~60 minutes method to detect the PLT result had no difference.

Diagnosis Value of Joint Detection of Critical Patients Procalcitonin and (1,3)-beta-D Glucan with Deep Fungus Infection in ICU / 现代检验医学杂志

Objective To explore the clinical application of jiont detection of critical patients procalcitomin (PCT)and (1,3)-beta D-glucan with deep fungus infection in ICU.Methods From November 2012 to August 2014 diagnosed with deep fun-gal infection of ICU critical patients,106 cases of patients with serum PCT and (1,3)-beta-D glucan content detection,and ICU of deep fungal infection in critically ill patients,519 cases were analyzed,with differencesbetween the paired t test to compare the results.Results 106 patients with deep fungal infection of ICU critical patients serum PCT for 0.701 ±0.22 pg/ml and (1,3)-beta-D glucan for 37.82±18.43 pg/ml,significantly higher than the 519 cases of ICU of deep fungal infec-tion in critically ill patients in the serum PCT for 0.238±0.12 pg/ml and (1,3)-beta-D glucan for 14.96 ±4.37 pg/ml, comparing differences between both results was statistically significant (t=7.426,8.179,P <0.05).106 patients with deep fungal infection of ICU critical patients serum PCT positive detection rate was 57.5% (61/106),significantly lower than the (1,3)-beta-D glucan positive detection rate 89.6% (95/106),difference was statistically significant (χ2 = 13.645,P <0.05).Conclusion Deep fungal infection in critical care patients in the ICU in the serum PCT and (1,3)-beta-D glucan con-tent of deep fungus infection in critically ill patients was significantly higher than the ICU,PCT and (1,3)-beta-D glucan joint detection of deep fungal infection in patients with ICU critical patients diagnosis has important clinical significance.