Condoms ; standards ; supply & distribution ; Humans ; Quality Control ; Sexually Transmitted Diseases ; prevention & control

This paper describes photobiological hazards and the standards of photobiological safety in the application of medical devices. It analyzes and discusses the current status of the international standardization and the national standardization.
Equipment and Supplies ; standards ; Photobiology ; Safety

Breast Neoplasms ; diagnosis ; China ; Female ; Humans ; Mass Screening ; standards

Acromioclavicular Joint ; anatomy & histology ; injuries ; surgery ; Fracture Fixation ; instrumentation ; methods ; Humans ; Male ; Shoulder Dislocation ; surgery

Objective:To study biomedical engineers’ working function in medical device adverse events monitoring.Methods: According to the core function of biomedical engineering discipline and the related theory of adverse events, we analyzed the complexity and difficulty of medical device adverse event monitoring, pointed out the major jobs of biomedical engineers and combined with the medical device maintenance case analysis.Results: The risk management of medical device is the working focus of biomedical engineers. Biomedical engineers have professional advantages in medical device adverse event monitoring.Conclusions: Based on discipline advantages and working core functions, the biomedical engineers can report high quality medical device adverse events and analyze and deal with them in time.

Objective To evaluate the diagnostic value of liver function for cases of laparoscopic common bile duct exploration indications to identify the exploration negative and positive.Methods Grouped the 270 cases of laparoscopic common bile duct exploration according to the negative and positive exploration,analyzed differences between groups,analyzed diagnostic value of every index,and established scoring system and evaluate the diagnostic value.Results The liver function index ALT(P =0.003),AST (P =0.039),ALP(P ＜ 0.001),GGT (P ＜ 0.001),TB (P =0.031),DB (P =0.003),gender (P =0.002),ultrasound results (P =0.001) had differences between the groups.The best cutoff value index of liver function:ALT (33.5 U/L),AST (38.5 U/L) and ALP (87.5 U/L),GGT (34 U/L),TB (16.00 U mol/L),DB (4.00 U mol/L);The diagnostic value and the 95％ confidence interval for each indicator:ALT 0.649 (0.563 ～ 0.736),0.600 (0.510 ～ 0.691) AST,ALP 0.673 (0.596 ～ 0.750),GGT 0.674 (0.592 ～ 0.755),TB (0.489 ～ 0.656),0.572 DB 0.652 (0.568 ～ 0.737).The highest diagnostic value was value scoring system diagnosis,the diagnostic value of the best cutoff value and 95％ confidence interval were 0.741 (0.662 ～0.820).The positive predictive value was 70.2％,negative predictive value was 65.9％.Conclusion The scoring system with liver function,gender and ultrasound findings established chnical reference value for identifying those who do not need the common bile duct exploration from cases of laparoscopic common bile duct exploration indications.

Objective To investigate the diagnostic significance of lysophosphatidic acid (LPA) ,tumor specific growth factor (TSGF) and carbohydrate antigen 153 (CA153) in breast cancer .Methods Serum levels of LPA ,TSGF and CA153 were detected in 97 cases of breast cancer (cancer group) ,43 cases of benign breast disease (benign group) and 50 healthy females (control group) .Diagnostic significances of these parameters were analyzed .Results Serum levels of LPA ,TSGF and CA153 in cancer group were significantly higher than benign group and control group (P<0 .05) .Diagnostic sensitivity and specificity of combined detection of LPA ,TSGF and CA153 was higher than individual testing (P<0 .05) .Conclusion Combined detection of tumor mark‐ers could improve the diagnostic specificity and sensitivity of breast cancer ,and provide reliable experimental basis for diagnosis .

Objective To investigate the actual level of anxiety in Xinxiang Medical University ,and determine the factors that cause anxiety in college students so as to provide basis for carrying out psychological work in university .Methods 848 sopho‐more and junior students in Xinxiang Medical University were assessed with the SAS .Results The anxiety detection rate of the students in Xinxiang Medical University was 20 .3% ;In the studied factors ,the detection rate of anxiety in sex ,grade of students , mother′s educational level ,student financial condition ,academic stress and ability of interpersonal was different significantly(P<0 .05) .Significant difference was not found in father′s education level ,students with professional satisfaction and only children or not (P>0 .05) .Conclusion The students′anxiety is in a high level and the formation of students anxiety is related to various fac‐tors ,which should be given attention by the school ,family and related departments ,so as to provide help for comprehensively im‐proving student mental health .

The resources development for institutional repository between college and university libraries in China and USA was comparatively analyzed in aspects of its richness,usability,normality and sustainability with C9 League Colleges and Universities in China and Ivy League Colleges and Universities in USA as examples,which showed that the construction of institutional repository in domestic college and university library is still at its initial stage,its usability and normality are limited,and its sustainability is not so promising.

[Objective]To explore the clinical outcome and advantages of surgical treatment of thoracolumbar fracture without neurological defect.[Method]From July 2003 to July 2006,23 cases of AO type A or type B thoracolumbar fracture without neurological defect were treated operatively. The anterior height of vertebral body lost more than 40% before operation,and 70% of the patients had an intracanal fragment.Transpedicular screw reduction and fixation were performed and bone fusion with inter transverse process and interlaminar bone graft were performed.[Result]The anterior height of vertebral body and the intervertebral body angle improved significantly after operation. And the rate of spinal stenosis decreased from 38% before operation to 12% 3 months after operation. 81% achieved bone fusion 1 year after operation.[Conclusion]The surgical treatment of thoracolumbar fracture without neurological deficit has the advantages of restoration of vertebral body height effectively,correction the deformity,restoration of the spinal volume and prevention the progressive of neurological deficit.In order to achieve long-term stability,bone fusion should be performed at the some time.