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.

Objective:To establish a human monocyte cell line U937 stably expressing CD200.Methods:The eukaryotic expression vector pcDNA3-CD200 containing human CD200 cDNA and vector pcDNA3 were transferred into human monocyte U937 cell line by electrotransfer.These two cell lines were selected by G418, and the selected cell lines were subcultured. U937 cell line was enclosed as control group.The expression of CD200 mRNA and protein was detected by RT-PCR and flow cytometry.Results:After G418 selection,U937 cell line in control group was died, and the cell lines transferring pcDNA3 and recombined pcDNA3-CD200 were subcultured over 30 generations.The CD200 mRNA expression in pcDNA3-CD200 group was confirmed with RT-PCR.The CD200 expression in U937-pcDNA3-CD200,U937-pcDNA3 and U937 were 77.20%,3.20% and 2.10%,compared with other two groups (F=133 996.40,P0.05).Conclusion:Our study provides foundation for mechanism of action for CD200 in future.The human monocyte series U937 cell line that expresses CD200 protein stably is established successfully by gene transfection method.

Objective: To study the relationship between mental health and achievement motivation of teachers.Methods: 322 high school teachers completed SCL-90 and Achievement Motivation Scale.Results: The percent of high-score teachers with at least one SCL-90 subscale scored more than 3 is more than 5%.There is obvious correlation between the score of SCL-90 and the AMS's.Conclusion: The high level of achievement-seeking or the high level of failure-avoiding is harmful to the mental health of teachers.

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.

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

Calcification is a major cause of clinical failure of bioprosthetic and other tissue cardiac valve substitutes.The mechanism of calcification of cardiac valve substitutes is quite complex and has a variety of determinants,involving reaction of calcium-containing extracellular fluid with membrane-associated phosphorus to yield calcium phosphate mineral deposits.The most promising anticalcification strategies have included binding of calcification inhibitors to glutaraldehyde fixed tissue,removal or modification of calcifiable components,modification of glutaraldehyde fixation and use of tissue cross linking agents other than glutaraldehyde.This article reviews current progress toward the research of calcification and anticalcification strategies that are under investigation either in advanced animal models or in clinical trials.