Objective To explore and estimate a new non-operative treatment of maxillary fracture with elastic traction for the purpose of early treatment and on-spot first aid. Methods 12 patients, who were suffer from maxillary fracture including Lefort Ⅰ, Ⅱ, Ⅲ fracture, zygomatico-maxillary complex fracture and nasomaxillary complex fracture within the past 2 or 3 weeks,were treated by closed tractive reduction with a patent craniomaxillary tractive device, a non-operative manner instead of surgical open reduction and rigid internal fixation. The devices were placed after dental splints had been ligated, and the traction force was adjusted depending on the extent of maxillary displacement and patient’s endurance. In general, the displaced maxilla could be pulled upwards, downwards, forward, leftward and rightward. For fallen maxilla, a special plate was placed on upper teeth and palate in order to push up the whole maxillary fragments. By adjusting the position of maxillary bar, the displacement could be reduction and correction. The elastic rubber loops were placed between dental splint and headframe, then the reduction of maxilla was accomplished. After reduction, external fixation such as intermaxillary fixation and craniomnetal bandage were used for maintenance. Results Tractive times of those 12 patients lasted from 2 days to 7 days, with an average of 4 days. After the non-operative trative reduction, satisfactory functional and cosmetic results were achieved with normal occlusion and facial contour in all patients. No obvious complications were found. Conclusion For fresh maxillary fracture except comminuted and impacted fracture, this new non-operative tractive treatment could be an ideal treatment rather than surgical open reduction.

Objectives To establish an evaluation index system for general hospital's sustainable innovation ability of science and technoloby and determine the index weight. Methods Firstly, the theory of scientific and technological innovation was discussed based on the systematic analysis of the related facts from the documents. Secondly, a set of targets was drafted with methods of work breakdown structure (WBS), classification and combination from references to many other studies of science and technology evaluation, and then revised by experts who are familiar with the subject. Thirdly, the weight of each target was decided through Analytical Hierarchy Process (AHP) and questionnaires. Results A systematic and comprehensive evaluation system of the general hospital's sustainable innovation ability of science and technology, comprised 3 first-level indicators, 15 second-level indicators and 37 third-level indicators, which were proved reliable by consistency check. The weights of each indicator were also defined. Conclusions The evaluation system comprises both qualitative and quantitative indicators. The indicators not only reflect the performance of a period, but also reflect the sustainability of large general hospitals' scientific and technological innovation ability. By using the scientific consultation, analysis and statistics, the evaluation system is proved to be valid and reliable.

Objective To provide an index system and model for evaluating the development strategies of military preventive medicine (MPM).Methods SWOT was used to analyze the internal and external conditions of the development strategies of MPM,and the evaluation index system was constructed.The weight of each evaluation index was determined based on the analytic hierarchy process (AHP) and expert consultation.The evaluation model of MPM development strategies and confrontation matrix were constructed based on SWOT analysis.The effectiveness of the index system and model was evaluated through empirical research.Results The evaluation index system was constructed,which included four grade-one indexes (R&D quality,difficulty,requirement and support) and sixteen grade-two indexes (research level,academic status,etc.).The advantage and disadvantage models,opportunity threat model and SWOT evaluation model were established.The confrontation matrix of development strategies for MPM was developed.Conclusion This evaluation index system and model can accurately evaluate MPM development strategies and provide reference for formulating development strategies of MPM.

Objective To evaluate the sustainable innovative ability of science and technology (S &T) of four large general hospitals from three different regions of China(Chongqing, Shaanxi and Hunan) with an evaluation system. Method The data collected were processed with normalization method. The evaluation models were established and varied in design to reflect either the dynamic trends or the levels of innovative abilities in different hospitals. Results Hospital A, B and D took on an ascending trend in sustainable S & T ability for innovation, while hospital C showed a descending trend in recent years. Overall, hospital A and D had a stronger sustainable S & T ability for innovation than hospital B and C. Conclusion The eval-uation system established is able to reflect the levels and trends of sustainable S & T innovative ability of the selected hospitals, which is in accordance with the actual situations, and is therefore scientific and feasible.It could provide reference for hospital S & T administrators to make decisions and is favorable to the sustainable development of hospital's S & T innovative ability.

Objective To study the effect of hypoxia on the expression of interleukin 6 (IL 6) in cocultured pulmonary arterial smooth muscle cells (PASMC) Methods Rat PASMC were cocultured with rat lung microvascular endothelial cells, and randomly divided into 5 groups: normal group (N), 2 h hypoxia (H2), 6 h hypoxia (H6), 12 h hypoxia (H12), and 24 h hypoxia (H24) The expression level of IL 6 mRNA in PASMC was detected with RT PCR, and the activity of IL 6 in the supernatant with radioimmunoassay Results The expression level of IL 6 mRNA increased in PASMC in H2, reached the highest in H6, and decreased in H12, but still higher than that of N The changes of the IL 6 activity in the supernatant as well as IL 6 mRNA expression in the cells were in a time dependent manner Conclusion Hypoxia can enhance the expression of IL 6 in cocultured PASMC And it may activate others genes which regulate the hypoxic response of PASMC and signal transduction

Clinical practice teaching is the deepening and continuity of school education , which is an important part of medical education. This paper aims to analyze the current situation and problems as to the teaching management during clinical training of full-time clinical major students, and put forward the corresponding countermeasures . The clinical practice teaching management and the clinical intern training quality can be significantly improved by establishing normative practice teaching management sys-tem, innovating teaching management mechanism, and correct treatment of the contradiction between clin-ical practice, employment and taking part in the entrance exams for postgraduate schools.

Objective To evaluate the effect of plastic surgery for scar contracture after hand burn.Methods Clinical treatment data of 56 patients with scar contracture after hand burn was collected from December 2011 to December 2016.Different surgery methods were adopted to treat the scar contracture after hand burn according to different degree,different sites and different range.Results All cases were operated successfully,and the appearance and function of the hands were almost recovered during the 6 months' follow-up,without contracture again.Conclusion Appropriate surgical programs should be used in scar contracture with different parts and degrees,and reasonable postoperative rehabilitation can improve the function and appearance of hands better,which can avoid secondum contracture.

Objective To understand the study habits of medical postgraduates in basic cours-es so as to provide references for the reformation of teaching methods. Methods Totally 250 postgra-duates of grade 2010 in our university were investigated with self-made questionnaire. The contents of the questionnaire included basic condition of postgraduates, study methods and suggestions for teaching methods. Rate, percentage and Chi-square test were applied to do statistical analysis. Results Accor-ding to the results of the collected 246 copies of questionnaire, 91.5%(225/246) did not preview lessons before class, 93.5%(230/246) took notes in class, 78.9%(194/246) simply took notes in the book, 60.6%(149/246) preferred more detailed courseware and 27.2%(67/246) reviewed lessons after class. The percentage of simply taking notes in the book of local students (86.5%) was significantly higher than that of army ones (73.2%) (P=0.030), but the percentages of preferring more detailed courseware and reviewing lessons after class of local students were significantly lower than those of army ones (P=0.008, P=0.016). Conclusions The proportion of previewing before class is low among postgrauates. Postgraduates depend heavily on teachers and do not review after class in time. There are differences between local students and army students in taking notes and review habits. It is important to cultivate postgraduates’good study habits.

Quality management covers every corner of hospital services,which upholds full-process quality management,continuous quality improvement and smooth management with patients at the center.By means of building a 3-tier quality management framework at the hospital,development of quality management criteria,appraisal indicators and documentation and use of quality management tools,quality management defects were identified from a third-party perspective.This effort has significantly improved quality of care at the hospital,and elevated the management execution and general service quality of the hospital.

AIM: To explore the effect of exogenous carbon monoxide (CO) on the hypoxic pulmonary arterial hypertension in the rat. METHODS: 60 rats were randomly divided into 5 groups: Normal group\, hypoxic group\, Hermin group\, Znpp group and CO group. HO-1 activity was examined by spectrophotometer and lung tissues was stained by immunohistochemical method. HO-1 mRNA level was tested by reverse transcriptase polymerase chain reaction (RT-PCR). RESULTS: (1) The pulmonary arterial pressure (18.52?3.24 mmHg) in CO group was higher than anoxic group and lower than hypoxic group (P