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.

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.

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.

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).

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

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

OBJECTIVE:To investigate the prevention and treatment effect of Xiaochaihu decoction on irinotecan(CPT-11)-in-duced bloodystool in model mice with delayed diarrhea. METHODS:40 mice were randomly divided into normal control group (equal volume of normal saline),model control group(equal volume of normal saline),Xiaochaihu decoction group(1500 mg/kg, calculated by crude drug)and loperamide group(positive control,0.5333 mg/kg),ig,once a day,for 17 days. Except for normal control group,other groups were intraperitoneally injected CPT-11 to induce delayed diarrhea in 4th-10th day. Body mass changes, bloodystool rate of mice were determined,and pathological changes in large intestine and small intestine were observed. RE-SULTS:After 17 days of administration,compared with normal control group,the body mass in modeling groups was obviously declined (P<0.05),while body mass in Xiaochaihu decoction group was higher than model control group (P<0.05). In the 11th-17th day,bloodystool rate in Xiaochaihu decoction group and loperamide group were significantly lower than model control group(P<0.01),and bloodystool rate in Xiaochaihu decoction group was lower than loperamide group(P<0.05). Pathological re-sults showed,obvious diffuse necrosis and inflammatory cell infiltration were observed in mucosal epithelial cells of large intestine and small intestine in model control group,and the intestinal mucosal tissue in administration groups tended to be normal. CON-CLUSIONS:Xiaochaihu decoction can effectively reduce bloodystool rate,improve intestinal mucosa injury,and has prevention and treatment effect on CPT-11-induced bloodystool in mice,with superior effect to loperamide.

In recent years,PET-CT plays an important role in Hodgkin' s lymphoma (HL).It has emerged as the most accurate tool for staging,treatment monitoring,and response evaluation in HL.PET-CT has high sensitivity and specificity.It provides an opportunity to monitor the quality of response during treatment,permits separation of node from involved regions,and adds prognostic information.PET-CT has become integral to modern lymphoma management,but as a relatively new imaging technique it is still being studied and neither its full potential nor major limitations have been fully understood.The recent observations from clinical trials and clinical experiences with PET-CT in the 54th ASH annual meeting are discussed to explore its advantages and limitations.

To evaluate the efficacy of the prophylactic use of diclofenac in prevention of hyperamylasemia and hyperlipasemia in patients undergoing double-balloon enteroscopy (DBE).One hundred and sixteen patients undergoing peroral DBE were enrolled in the study.Total 121 procedures were performed,in 56 procedures diclofenac sodium 50 mg was administered by rectum 1 h before the peroral DBE (intervention group) and in 65 procedures no medication was given (control group).Serum amylase and lipase levels were measured before and 4 h,24 h after the procedure.At 4 h after DBE the incidence rates of hyperamylasemia and hyperlipasemia in intervention and control groups were 33.9％,38.5％ (P ＞ 0.05) and 21.4％,36.9％ (P ＞0.05),respectively.At 24 h after DBE,the incidence rates of hyperamylasemia and hypedipasemia in intervention and control groups were 19.6％,24.6％ (P ＞ 0.05) and 10.7％,15.4％ (P ＞ 0.05),respectively.Mild acute pancreatitis developed in one patient and gastrointestinal hemorrhage occurred in another patient.Hyperamylasemia and hyperlipasemia is common and transient after double-balloon enteroscopy,and rectal administration of diclofenac sodium cannot effectively reduce the incidence.

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.