A new method of acquiring electromyographic is presented.An EMG signal acquisition system is developed based on virtual instrument,which adopts traditional electromyographic instrument,high performance data acquisition card and Labview software.The real-time acquisition,digitalization and display of electromyographic signal are realized through the new system.Adapted to various physiological signals with the expanded functions,the system can be considered as the future physiological instrument's direction.

Humans ; Neck Dissection ; methods ; Tongue Neoplasms ; surgery

Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) is a member of the TNF super family found in recent years, which widely exists in the body tissues and participates in the immune regulation, immune stability, and immune surveillance of the human body. The TRAIL receptor is expressed in the surface of a variety of cells. Recent studies show that TRAIL induces the apoptosis of tumor cells and has no significant toxic effect on normal cells. Its anti-tumor activity and safety have been widely recognized. The development of prostate cancer is regulated by the mechanisms of cell apoptosis. TRAIL can induce the apoptosis of prostate cancer cells, and therefore has a great application value in the treatment of prostate cancer.
Antineoplastic Agents ; therapeutic use ; Apoptosis ; Apoptosis Regulatory Proteins ; Humans ; Male ; Membrane Glycoproteins ; Prostatic Neoplasms ; drug therapy ; pathology ; Receptors, TNF-Related Apoptosis-Inducing Ligand ; physiology ; therapeutic use ; TNF-Related Apoptosis-Inducing Ligand ; Tumor Necrosis Factor-alpha

Objective To investigate the feasibility of abdominal aorta or common iliac artery occlusion by balloon catheter dilatation to decrease blood loss and promote operation safety during resection of sacral tumors and hip bone metastatic tumors. Methods From March 2003 to March 2005, 4 cases each of high level sacral tumors (3 of giant cell tumor and 1 of chordoma) and hip bone metastatic tumors (3 of lung cancer and 1 of osteosarcoma ) were resected after occlusion of the distal abdominal aorta or unilateral common iliac artery with balloon catheter dilatation in reducing intraoperative hemorrhage, the blocking time were 40 to 70 mins each with an interval of 15 to 20 mins. A balloon catheter was introduced through femoral artery at radiographic department one hour before the index operation. The balloon catheter was positioned proximal to the bifurcating of common iliac artery in lower abdominal aorta between superior mesenteric artery and renal artery confirmed by arteriography, or located in affected side common iliac artery. Results After the occlusion of abdominal aorta or unilateral common iliac artery, there was much less intraoperative hemorrhage (the amount of bleeding, 100 to 300 ml) and needed no hemostasis during the resection and curettage of the tumors. It possessed the similar effects as using the tourniquet in the operations of the extremities. The operating field was clean and the anatomic structures were exposed clearly. It was easy to define the boundary of the tumors and enable to perform complete tumor excisions and reduce contamination in the operative field. All the patients had smooth blood pressures during the operations. 1 case of sciatic nerve paralysis occurred in sacral giant cell tumor postoperation, but recovered 3 weeks later. Conclusion Occlusion of major blood supply arteries with balloon catheter dilatation can effectively reduce operative hemorrhage during the resection of sacral and hip tumors and it can promote the safety of the operations.

Objective Through retrospective analysis of the thoracotomy of pulmonary metastases form osteogenic sarcomas in order to explore the related factors of prognosis and to improve the outcome of treatment.Methods From October1980to March2003,32cases with pulmonary metastases from sarcoma of bone were reviewed.62of thoractomy were performed for the patients,61of which were accomplished in the department of orthopaedics,and58operations were performed by the authors.There were32males and10females aging from11to61years with an average of 22.1years.The primary tumors of the patients were25oateosarcomas,3chondrosarcomas,2juxtacortical osteogenic sarcomas,and1each of fibrosarcoma and Ewings sarcoma.Of 32cases,21(65.6%)were treated with limb salvage,and11(34.4%)by am puta-tion.According to Enneking system,there wereⅡB in26andⅢB in5.25(78.1%)cases were bi lateral multiple metastases,6(18.8%)cases were unilateral solitary metastasis,and1(3.1%)case was unilateral mul tiple metastases.Most of the procedures of operation were local resection of the tumor ;however,only5cases underwent lobectomy.Results The postoperative complications included1case of severe bleeding cured by exploratory thoracotomy,2cases of lethal infections,and1case of atelectasis.Of 32cases,11sur -vived with out tumor at final follow-up.In25osteosarcoms,16were dead,2were lost from the follow-up;7cases of the other18cases that bilateral resections performed,were alive without tumor (38.9%)with a me di an survival time of 7years and3months.1each of Ewings sarcoma,paraosteal osteosarcoma and,chon-drosarco ma survived without tumor for 22years and5months,19years and3months,and13years and3months respectively.Conclusion Thoracotomy of pulmonary metastases of osteogenic sarcomas is an ef-fective method to salvage the patients life.The procedure of metastasectomy is local resection.The results al-so suggest that newadjurant chemotherapy is a important way to effect the condition of pulmonary metastases of osteogenic sarcomas.

Adult ; Female ; Humans ; Rheumatic Heart Disease ; therapy ; Treatment Failure

Animals ; Antineoplastic Agents ; pharmacology ; therapeutic use ; Brain Neoplasms ; drug therapy ; secondary ; Breast Neoplasms ; drug therapy ; metabolism ; pathology ; Cell Proliferation ; drug effects ; Humans ; Quinazolines ; pharmacology ; therapeutic use ; Receptor, Epidermal Growth Factor ; metabolism ; Receptor, ErbB-2 ; metabolism

Objective To investigate the clinical value of 256-slice CT angiography (CTA) in diagnosing coronary artery fistula(CAF).Methods A total of 18 patients with CAF were analyzed retrospectively.The raw data were transferred to the work station.Image reconstruction techniques were employed, including multiplanar reconstruction (MPR),curved planar reconstruction (CPR),maximum intensity projection (MIP) and volume render (VR).Results Coronary artery angiography showed fistula affluxed to the pulmonary artery in 5 cases,affluxed to the coronary sinus in 5 cases,affluxed to the right atrium in 3 cases,affluxed to the left atrium in 3 cases, affluxed to the right ventricle in 2 cases.The blood flow from abnormal vessels to pulmonary arteries was demonstrated in 5 patients,and injection sign or hyper-density of contrast material in the main pulmonary artery was seen.The tortuous vascular networks on the surface of the main pulmonary artery trunk were seen in 2 cases.Formation of aneurysm was seen in 3 cases.Conclusion 256-slice CTA can precisely show the detailed anatomy variations and heomodynamic information of CAF, and directly display the abnormal vessels with multiple image reconstruction techniques.

Objective To analyze the electrocardiography ( ECG ) data of pressure overload ?induced chronic heart failure rats. Methods Totally 20 SD rats were randomly divided into sham operation group and heart failure group. Heart failure rats were induced by abdominal aorta constriction. Echocardiogram measurement demonstrated the occurrence of cardiac function. Two lead ECG parameters of limb a was measured and statistically analyzed. Results Ten weeks after operation, there was a increase in heart rate, P amplitude, P duration and R amplitude comparing by those of the sham operation group (P < 0?05). ECG showed a significant and ubiquitous J point elevation (P < 0?05), with ST segment notable depression ( P < 0?05 ) . Conclusions ECG in pressure?overload chronicity heart failure rats exhibits obviously characteristic features. ECG is an useful tool for objective and accurate assessment of cardiac function in rats.

OBJECTIVETo observe the therapeutic effects of steel plate fixation after the failure of arthrodesis of ankle by screw fixation.

METHODSFrom August 2001 to October 2011, 15 patients were with steel plate fixation after failure of arthrodesis of ankle by screw fixation. Among patients, 9 cases were males and 6 cases were females,ranging age from 40 to 65 years old with the average of 56 years old. Ten cases were in left and 5 cases were in right. Screws were removed and steel plate was fixed intraoperatively, and plaster external fixation for postoperation. Clincal effect were evaluated according to AOFAS scoring system from pain, waliking ability and aligment before and after operation, and X-ray was used to evaluate joint fusion after operation.

RESULTSAll patients were followed up, and the duration ranged from 4 months to 4 years with an average of 2 years. The incison were healed in stage I. No ankle pain,injury of blood vessel and nerve,infection and farilure of internal fixation occuerred. The AOFAS score increased from 36.86 +/- 8.32 preoperatively to 85.09 +/- 4.65 (t = -26.366, P = 0.000).

CONCLUSIONSteel plate fixation after the failure of ankle arthrodesis of screw fixation has the advantages of rigid stability, simple manipulation and high success rate, less pain, perfect recovery.

Adult ; Aged ; Ankle Joint ; diagnostic imaging ; surgery ; Arthrodesis ; Bone Plates ; Bone Screws ; Female ; Follow-Up Studies ; Fracture Fixation, Internal ; instrumentation ; Humans ; Male ; Middle Aged ; Steel ; Tomography, X-Ray Computed ; Treatment Failure