Objective To develop a set of portable equipment for telemedicine audio and video acquision-wireless portable helmet terminal.Methods The telemedicine images were acquired rapidly in high precision by using micro-camera with automatic focus.Voice analog signals input from microphone were performed A/D conversion by using UDA1344 to form serial digital audio stream.Compressed by helmet master operating system in uCos multitask real-time operating system,the acquired audio and video data were connected with local network by short-distance wireless transmission and then with Internet.Results Wireless portable helmet for telemedicine had such functions as images acquisition,audio transmission,automatic focus,video tape and both-way interphone.The wireless connection with telemedicine server could transmit audio and video in long distance.Conclusion Wireless portable helmet for telemedicine can be applied in remote emergency care,operation and transmission,which will greatly promote the application of tele-medicine.

Objective To realize real-time data transmission of multiple remote terminals ECG monitoring.Methods Mutiple ECG collection terminals were used through a wireless local area network which was linked to servers in the data center though WCDMA.Results ECG data real-time acquisition and monitoring were realized in remote ECG real-time automatic diagnosis system based on network computer.Conclusion Acquisition and control of large amount of real-time data are realized.[Chinese Medical Equipment Journal,2008,29(2):18-20]

Coronary Restenosis ; metabolism ; Heart Valve Diseases ; Humans ; Osteopontin ; metabolism

Acute Coronary Syndrome ; drug therapy ; Anticoagulants ; therapeutic use ; Humans ; Polysaccharides ; therapeutic use

Objective: To study the roles of nuclear factor (NF-kB) and intercellular adhesion molecule 1 (ICAM-1) in cerebral ischemic preconditioning induced brain ischemic tolerance. Methods: A total of 100 clean rats were randomly allocated into 4 groups: control, ischemic, preconditioning, and ischemic preconditioning groups. Both focal and ischemic preconditioning models were induced. The neuroethological score, infarct volume ratio and expression of NF-kB and ICAM-1 in the ischemic region at the corresponding time points were observed. Results: Circled digit one The neurological deficit score in the ischemic group was higher than that in the ischemic preconditioning group. The cerebral infarction volume ratio was higher than that in the ischemic preconditioning group (28.6 ± 3.2% vs. 16.2 ± 3.8%, t = 2.668 [P < 0.05]), and there were significant differences (P < 0.05). Circled digit two The number of NF-KB positive cells in the ischemic preconditioning group were lower than those in the ischemic group at the same time points, but they were higher than those in the preconditioning group, and there were significant differences (P < 0.05). The peak time of the number of NF-KB positive cells in the ischemic preconditioning group was delayed for 48 hours. Circled digit three The numbers of ICAM-1 positive cells in the ischemic preconditioning group were less than those in the ischemic group at the same time points, but they were higher than those in the preconditioning group, and there were significant differences (P < 0.05). Conclusion: Ischemic preconditioning decreases the expression of NF-KB and ICAM-1 after ischemia. The inhibition of inflammatory reaction may be one of the mechanisms of the ischemic tolerance induced by ischemic preconditioning.

AIM: To investigate the effects of atorvastatin calcium on vascular endothelial cells and circulating endothelial progenitor cells (CEPCs) in hypertensive rats. METHODS: Renal hypertension rat model was constructed with two-kidney-one-clip technique. Twenty-four male SD rats were randomized into hypertension group, statins group and sham-operated group (n=8 each). On the 4th week, the animals in statins group were injected with 20 mg·kg~(-1)·d~(-1) atorvastatin calcium intra-abdominally for 8 weeks. Blood pressure and blood lipid were measured at 4th and 12th week post-operation. On the 12th week, scanning electron microscopy was used to observe the damage of aortic endothelial cells. The circulatory endothelial cell count, CEPCs count, CEPCs proliferation ability, CEPCs adhesion ability and CEPCs apoptosis were also measured. RESULTS: The injury of endothelial cells in statins group was observed, milder than that in hypertension group, but worsen than that in sham-operated group. The numbers of circulatory endothelial cells in hypertension group, statin treatment group and sham-operated group were 5.9×10~6, 3.9×10~6 and 2.0×10~6 respectively, and the CEPCs apoptosis rate was 22.1%±2.1%, 13.4%±1.6 %and 7.4%±1.3%, respectively. Meanwhile, the numbers of CEPCs were 21.63±2.33, 40.38±6.00 and 65.38±2.97, respectively, the proliferative abilities of CEPCs were 0.13±0.01, 0.17±0.01 and 0.29±0.03, respectively, and the adhesion of CEPCs was 12.25±2.49, 21.50±2.20 and 28.88±2.85, respectively. CONCLUSION: (1) The severity of vascular endothelial cell injury is related to hypertension states. (2) Atorvastatin calcium has direct protective effects on endothelial cells, possibly through increasing CEPCs count, reducing CEPCs apoptosis and markedly enhancing reparation ability of CEPCs to endothelial cells.

Objective To compare extramedullary fixation (EF), intramedullary fixation (IF) and dipolar femoral replacement(DFR) in the treatment of intertrochanteric fractures in the elderly patients. Methods From July 1999 to December 2008, 172 old patients with intertrochanteric fractures were treated by either EF, or IF or DFR. The operative procedures, complications and therapeutic effects were compared between the 3 methods. Results The patients included in the present study were followed up for 8 to 36 months (average, 19. 6 months). There were significant differences ( P<0. 05) in incision length, operation time, intraoperative blood loss, functional recovery and complications between the 3 methods. IF had the shortest incision length and the least intraoperative blood loss. DFR had less blood loss than EF. IF had the least operation time, followed by DFR. DFR had the best functional recovery one year postoperatively. IF had shorter rehabilitation and healing time than EF. Conclusions EF is the first choice for intertrochanteric fractures of A 1.1, A 1.2, A 1.3 and A2. 1. IF is more appropriate for the aged and unhealthy patients with intertrochanteric fractures of A1. 1, A1. 2, A1. 3, A2. 1, A2. 2, A3. 1 and A3.2. DFR is fit for the elderly patients with severe comminuted fractures and osteoporosis.

Hybrid procedure is an method that combines surgery and intervenfional catheterization. As collaboration between surgeon and interventionalist has improved, the procedures for complex congenital heart disease is progressing and developing remarkably. Combining echocardiography monitoring in hybrid surgical procedure of complex congenital heart disease not only reduces side effect of extracorporeal circulation and operation time, but also retrieves blind spot of interventional catheterization for infant and low weight baby. Currently it is applied in the field of atrial septal defect, muscular ventricular septal defect, pulmonary stenosis and post-operation residual shunts or stenosis.

Eighty cases of intrauterine adhesions who received adhesion separation technique were divided into two groups equally. The control group was placed intrauterine device and ballon catheter in intrauterine,and received o-ral female estrogen cycle treatment. The test group with the same treatment was added growth hormone treatment. Three months later,all of the patients were checked the hysteroscopy and intrauterine device was took out, also the uterine cavity form,and follow-up recovery of endometrial and menses were evaluated. Then it showed:①Endome-trial thickness increased by an average of (1.73±0.83) mm in the test group,while the control group average in-creased by (1.10±0.66) mm. The difference was statistically significant (t=3.73,P<0.01).② The re-adhe-sion rate was 45.0% in the control group,while it was 32.5% in the test group,respectively. The difference was not statistically significant. ③ The difference of mensual recovery between both groups was not statistical significant. Therefore growth hormone can promote the growth of endometrium of intrauterine adhesions after resection of adhe-sions.

Objective To analyze the characteristics of military training injury caused by distal femoral fractures that used reverse interlocking intramedullary nail(retrograte nails) and condylar plate to fix,and then compare the clinical treatment effects.Methods Retrospective analysis of clinical information of 30 cases,14 cases were treated with reverse interlocking intramedullary nail(reverse nail group) and 16 cases with condyle plate fixation(condyle plate group),all the cases were followed up for 12～20 months to compare the treatment effect and complications.Results According to Merchan criteria with clinical evaluation of knee function,the rate of good and excellent was 85.7% in the reverse interlocking in-tramedullary nail group,68.7%(P