Objective:To analyze and recognize the important role of metrology in the quality management of medical equipment, and discuss how to do well medical metrology work. Methods: To fully recognize the importance of medical metrology, to analyze existing problems, to provide solutions for the problem and to do well the measurement work in combination with the status quo of medical measurement in the medical equipment management.Results: The metrology work can be done well by the attention of leadership, establishing administration of metrology management, establishing and improving the measurement management system, and strengthening the construction of information management.Conclusion: All of leaders in different levels and departments should pay full attention to the measurement work, find the problems, take effective measures for improving measurement management ability, and ensure the quality of diagnosis and treatment.

During September-October 2012,random cluster sampling method was employed to recruit 871 students from 29 classes at East China Normal University to conduct a questionnaire survey.The overall prevalence of skin diseases was 33.5％ (292/871) and those of eczema,urticaria,drug eruption and atopic dermatitis were 16.4％ (143/871),9.8％ (85/871),2.2％ (19/871) and 0.2％ (2/871) respectively.These diseases showed no statistically significant gender differences.The prevalence of contact dermatitis was 16.9％ (147/871) and there was statistically significant gender difference (P ＜0.01).

OBJECTIVE:To investigate clinical efficacy and safety of levetiracetam add-on therapy in the treatment of elderly epileptic patients. METHODS:Totally 88 elderly epileptic patients in Chongqing Yunyang County Hospital of TCM during Jan. 2014-Jan. 2016 were divided into observation group and control group according to random number table,with 44 cases in each group. Control group was given routine antiepileptic therapy of carbamazepine+phenobarbital;observation group was additionally given Levetiracetam tablet with initial dose of 0.25g,increasing to 0.5 g according to disease condition,bid,on the basis of con-trol group. Treatment courses of 2 groups lasted for 6 months. Clinical efficacies,GCS score,Barthel index score,MoCA score and the occurrence of ADR were observed in 2 groups. RESULTS:Total response rate,control rate and MoCA score of observation group were significantly higher than those of control group,with statistical significance(P<0.05). GCS and Barthel index score of 2 group after treatment were significantly higher than before treatment,and those 2 scores of observation group were significantly higher than those of control group,with statistical significance (P<0.05). No obvious ADR was found in 2 groups. CONCLU-SIONS:Levetiracetam add-on therapy is better than routine therapy plan in the treatment of elderly epilepsy,and significantly re-duce coma degree,increase daily living ability and cognitive function with good safety.

The preventive mechanism of salviae miltiorrhizae (SM) against experimental atherosclerosis (AS) in rabbits models was investigated. The experimental AS rabbit models were reproduced by feeding the high cholesterol diet. The changes of atherosclerotic plaques in normal group, model group and SM treated group were observed. The levels of serum TG, TC, HDL-C and LDL-C were determined. The immunohistochemistry was used to detect the expression of Bcl-2, Bax and IL-6 proteins in atherosclerotic plaques. The results showed that the level of serum TG in SM treated group was significantly lower than in model group (P<0.01). Immunohistochemistry revealed that the expression of Bcl-2, Bax and TL-6 in model group was significantly higher than in normal group. In the SM group, the expression of Bcl-2 protein was up-regulated and that of Bax was down-regulated. It was suggested that SM could inhibit formation of AS in experimental rabbits. To decrease the expression of Bax and increase the expression of Bcl-2 protein may be one of the mechanisms of SM against atherosclerosis.
Atherosclerosis/etiology ; Atherosclerosis/*prevention & control ; Diet, Atherogenic ; Drugs, Chinese Herbal/*therapeutic use ; *Phytotherapy ; Proto-Oncogene Proteins c-bcl-2/biosynthesis ; Random Allocation ; *Salvia miltiorrhiza ; Triglycerides/blood ; bcl-2-Associated X Protein/biosynthesis

Hodgkin lymphoma (HL) is a type of malignant tumor originating from the lymphoid hematopoietic tissues.Its typical pathological feature is the existence of R-S cells in the background of the different types of inflammatory cells.HL represents about 10 ％ of the total lymphoma and has good treatment outcome with 80 ％-90 ％ cure rate.However,there are still about 10 ％ of patients with refractory or relapsed lymphoma,which has become research focus of HL.In recent years,along with the application of molecular biology techniques,radiotherapy,chemotherapy and targeted therapy in treating HL,significant progress has been made in pathogenesis,prognosis and treatment of HL.

Objective To investigate the risk factors of cervical cancer in Chinese married women in recent 10 years in order to provide evidence based approaches for cervical cancer prevention and control Methods Eight case-control studies from 2002 to 2011 were selected from research literatures by using keywords such as cervical cancer, risk factors, influential factors and case-control study, cancer, risk factors, factors andcase-control study as the search term.We adopted the Mentel-Haensel fixed effect model and Dersimonion-Laird random effect model to gain a comprehensive and quantitative assessment of cervical cancer and its risk factors.Results Among the 8 case-control studies,the total number of cases and controls were 2868 and 8045,respectively.The risk factors included human papilloma virus (HPV) (RR =5.47,95 ％ CI:3.40-8.82),family history of cervical cancer (RR =2.40,95 ％ CI:1.39-4.16),number of abortions (RR =1.74,95％ CI:1.49-2.03),first sexual intercourse age number of sexual partners (1.72,95％ CI:1.36-2.16),low cultural level (RR =1.68,95％ CI:1.18-2.40).Conclusion The major risk factors for cervical cancer among married women in China included HPV,family history of cervical cancer,number of abortions,first sexual intercourse age number of sexual partners and low cultural level.

Objective:To investigate the expression of cyclooxygenase-2 (COX-2) and vascular endothelial growth factor-C (VEGF-C) in papillary thyroid carcinoma and their relationship to cervical lymph metastases.Method:In this study, the expressions of COX-2 and VEGF-C were examined by immunohistochemistry in papillary thyroid carcinoma tissues of 40 patients, and analysis was performed on the correlation of cervical lymph metastases with COX-2 and VEGF-C expression.Result:Positive expressions of COX-2 and VEGF-C were 70.0%(28/40)and 75.0%(30/40)respectively in papillary thyroid carcinoma. The positive rates of COX-2 and VEGF-C expression were 80.8%(21/26)and 84.6%(22/26)respectively in patients with cervical lymph metastases, and 50.0%(7/14)and 57.1%(8/14)respectively in patients without cervical lymph metastases, with a statistically significant difference between two groups(P<0.05, all). COX-2 was positively correlated to VEGF-C expression in papillary thyroid carcinoma(r=0.378, P<0.05).Conclusion:The results suggest that COX-2 and VEGF-C were highly expressed in papillary thyroid carcinoma, with possible interaction of their expressions, and may play a critical role in the cervical lymph metastases of papillary thyroid carcinoma.

Atomic layer deposition has been employed for postsynthesis treatment of octadecyl bonded silica (ODS) as a typical reversed-phase stationary phase for high performance liquid chromatography (HPLC) ,in an effort to alleviate peak tailing for basic compounds. With hexamethyldisilazane( HMDS) as an endcapping agent,the ODS packing materials were heated to 250℃,and maintained at that temperature for 6 h,affording packing materials which are highly inert to basic compounds. Chromatographic performance in terms of retention factor and tailing factor of the resulting phases was evaluated using phenol/pyridine and naphthalene/ami-triptyline pairs as probes. The results were compared with those for the same packing treated by liquid phase method and for the commercial products including Zorbax SB-C_(18) and Kromasil C_(18). The separation characteristics of the ODS phase obtained by atomic layer deposition appear to be superior to that by liquid phase method and,comparable with or even better than the commercial products studied. Being solvent-free process amenable to mass production,the described method provides an economical and eco-friendly approach to manufacturing HPLC packing materials on industrial scale.

Child ; Child, Preschool ; Humans ; Male ; Posterior Leukoencephalopathy Syndrome

[Objective]To analyze the mechanism of shape memory alloy imrasegmental fixator for lumbar spondylolysis(WMAIF)with finite element method.[Method]The three-dimensional model of WMAIF was established by using ANSYS 8.0 software for large finite element analysis.The model was extended with restriction in different parts,and to undertake corresponding mechanics calculation.[Result]The finite element model of WMAIF was set up,which could predict the strength and displacement of every node and element of its own structure in the course of deforming.[Conclusion]WMAIF is strong enough against tensile stress,which is a new and reliable intrasegmental instrument for direct repairing of lumbar spondylolysis.