Objectives:To study the clinical results and feasibility of continuous brachial plexus nerve block and postoperative anagesia with catheters located by nerve stimulator in interscalene approach. Methods:60 ASAⅠ~Ⅱ patients receiving continuous interscalene brachial plexus block and postoperative analgesia for forearm,wrist or hand surgery were randomized into two groups.In group I,nerve blocks were performed using a normal venous needle located with traditional method which elicites numbness of the limb. Then a epidural catheter was passed and secured. Group Ⅱ were guided by nerve stimulator and special catheters were placed. Results:Compared with group I,time to perform the block,time to block and time to obtain satisfactory sensory and motor blockade in group II were shorter(P

BACKGROUND:Anterior cervical discectomy and bone graft fusion are effective method to treat cervical spondylosis. This method can provide firm fixation and the fusion rate is high. However, for cervical vertebra involved in more than two segments, the stability of fixator and bone graft is poor due to big bone graft span, which may easily cause fusion failure and pseudarthrosis, and impact curative effects. OBJECTIVE:To investigate biomechanical stability of anterior cervical pedicle screw implantation for osteoporosis in the vertebra. METHODS:A total of 12 human cervical vertebrae were col ected, including 6 vertebrae with normal bone density and 6 vertebrae with osteoporosis. Data of 60 vertebra specimens were analyzed. 30 osteoporotic specimens implanted in anterior cervical pedicle screw were set as anterior cervical pedicle screw group. 30 normal specimens implanted in anterior cervical pedicle screw were set as anterior vertebral screw group. According to bone density, 40 vertebrae were col ected in above two groups, and were considered as normal bone mineral density group, instant osteoporosis group, fatigue normal bone mineral density group, and fatigue osteoporosis group (n=10). Bone mineral density of each vertebra was detected using dual-energy X-ray absorptiometry. Biomechanical index of two kinds of screws was detected using ElectroForce 3510 material testing machine. RESULTS AND CONCLUSION:Bone mineral content, vertebral screw pul-out strength, vertebral screw pul-out stiffness, pedicle screw pul-out strength, and pedicle screw pul-out stiffness were significantly higher in the anterior cervical pedicle screw group than in the anterior vertebral screw group (P<0.05). The maximum axial pul-out strength of normal bone mineral density group, instant osteoporosis group, fatigue normal bone mineral density group, and fatigue osteoporosis group was significantly higher than in the anterior vertebral screw group (P<0.05). The results confirmed that osteoporotic vertebral biomechanical performance is more stable in anterior pedicle screws compared with the anterior vertebral screw.

Innovation team is an independent and open complex adaptive system, which provides new ideas for recognizing and understanding the inner operating mechanism of innovation teams. This article analyzed the mechanisms of communication and exchange, competition and cooperation, incentive and con-straint as well as the conflict management from the perspective of complex adaptive system.

Objective To discuss and summarize the effects of arthroscopic treatment of posterior ankle impingement syndrome.Methods The study enrolled 30 patients with posterior ankle impingement syndrome treated from January 2008 to November 2015.There were 18 males and 12 females,aged 19-58 years old (mean,37.6 years old).Right ankle injury was noted in 19 patients and left in 11 patients.A total of 27 patients had a history of obvious ankle injury (7 cases of acute sprains and 20 cases of chronic sprains).Arthroscopic surgery,including osteophyte removal,cartilage formation and joint clearance,was performed through the posterolateral and posteromedial approaches.Postoperative outcome was evaluated by using the American Orthopedic Foot and Ankle Society (AOFAS) scores and visual analogue scale (VAS) scores.Results All the patients were followed up for 8-27 months (mean,22 months).These patients got a good healing without nervous and vascular injuries.At the last follow up,the AOFAS score was (89.8 ± 3.8) points,significantly higher than before operation [(35.0 ± 10.1) points,t =-26.456,P =0.000].The VAS score was (2.5 ± 1.3) points,significantly lower than before operation [(6.6 ± 1.9) points,t =12.427,P =0.000].The ankle joint flexion angle was improved significantly from 29.4° ± 2.3° to 43.4° ± 1.4° as compared to preoperative status (t =-32.625,P =0.000).There were 21 cases of excellent result and 9 cases of good result,with an excellent and good rate of 100％.Conclusion Debridement and treatment of complications under arthroscopy is one of the effective methods for the posterior ankle impingement syndrome,which has advantages of minimal invasion,safety,targeted operation,and fast postoperative recovery.

Objective To Discuss the Clinical Recognition of Acute Myocardial Infarction(AMI) caused by aortic valve incompetence.Methods Data of 275 AMI patients in our hospital recent two years,7 of them were caused by aortic valve incompetence; all of patients(7 AMI) were received coronary artery angioplasty,ultrasound,left ventricular angiography examination,its clinical feature was analyzed.Results All of 7AMI patients have normal coronary without limited constriction or plaque and with aortic valve incompetence.

The thesis,from the aspect of professional guidance of education,focuses on the outstanding problems that exist in the work of professional guidance,analyzes the main reasons that caused those outstanding problems,and gives the feasible suggestions to professional guidance in current university education.

Objective To observe the expression and the distribution of Netrin-1 in the spastic and normal segment of colon in patients with Hirschsprungs disease (HD) and investigate the relationship between Netrin-1 and development of HD.Methods Colon specimens of 36 cases with HD were selected for this study.Normal segment of colon served as the control group,while the spastic segments of colon as the lesion group.Immunohistochemical staining was applied to detecte the expression and the distribution of Netrin-1.Results Immunohistochemical staining showed that the expression of netrin-1 was positive in the intestinal muscular layers (longitudinal muscle,circular muscles),myenteric ganglias and mucosal layers in the control group.However,the expression of Netrin-1 was also positive in muscular layers and mucosal layer in the lesion group.There was no significant difference in the expression intensity of Netrin-1 between the two groups (P ＞0.05).Conclusion The expression of Netrin-1 in both the control group and the lesion group may indicate that netrin-1 have no significant correlation with genesis of HD.

Objective:To evaluate the effects of different denture cleaners on the discoloration of heat-cured denture base resin and artificial teeth.Methods:40 same specifications of the heat-curing denture base resin and 40 artificial central incisors were immerced in an acombination stain of coffee,tea and soy sauce for 4 weeks.Then specimens and artificial teeth were randomly distributed into 4 groups and soaked in Polident,Steradent,0.5％ sodium hypochlorite solution and distilled water for 4 hours respectivelly(n =10).Color differences(△E) were measured by using a colorimeter and a denture spectrophotometer before and after staining,and after cleaning.Results:Before or after staining there was no difference of △E among the groups of denture base risn or artificial teeth(P ＞ 0.05).After cleaning the denture base resin and the artificial teeth in the group of 0.5％ sodium hypochlorite solution presented higher △E than the other groups(P ＜ 0.05),in group of distilled water presented lower △E than the other groups(P ＜ 0.05).No significant difference was found between Polident group and Steradent group(P ＞0.05).The △E of the denture base resin and artificial teeth.in distilled water group before staining and after cleaning were the highest among the groups(P ＜0.05).Conclusion:0.5％ sodium hypochlorite solution,Polident and Steradent are effective in removing the discoloration from the heat-cured acrylic resin and artificial teeth.0.5％ sodium hypochlorite solution is the most effective,Polident and Steradent are the similar.

10 ng/mL). But berberine (10 ng/mL) showed no effect on the uptake of Nimodipine. Conclusion The experimental findings indicate that HLJDT pretreatment might alter the pharmacokinetic behavior of Nimodipine both in plasma and brain tissue. The change of pharmacokinetic behavior of Nimodipine in brain tissue might partly result from the effect of baicalin in HLJDT.

Objective To discuss the application value of the capillary electrophoresis in detecting the glycosylation hemoglobin (HbA1c)level.Methods By utilizing the uncoated fused silica capillary column(30 cm in length and 25 μm in diameter)and the specific adsorption peak,the HbA1c levels in the healthy people,patients with diabetes mellitus(DM)and high risk people were de-tected by the photodiode array(PDA)method at the wavelength of 415 nm.During the research process,the precision and accuracy were perfomred the accuracy analysis.Results HbA1c could be effectively separated from non-HbA1c,with a sharp peak.And the relative quantity of HbA1c could be determined.Conclusion The capillary electrophoresis is characterized by specificity,high precision,and high accuracy.Therefore,it should be widely applied in clinic.