Sudden cardiac arrest is one of the critical clinical syndromes in emergency situations. A cardiopulmonary resuscitation (CPR) is a necessary curing means for those patients with sudden cardiac arrest. In order to simulate effectively the hemodynamic effects of human under AEI-CPR, which is active compression-decompression CPR coupled with enhanced external counter-pulsation and inspiratory impedance threshold valve, and research physiological parameters of each part of lower limbs in more detail, a CPR simulation model established by Babbs was refined. The part of lower limbs was divided into iliac, thigh and calf, which had 15 physiological parameters. Then, these 15 physiological parameters based on genetic algorithm were optimized, and ideal simulation results were obtained finally.
Algorithms ; Cardiopulmonary Resuscitation ; Death, Sudden, Cardiac ; Electric Impedance ; Hemodynamics ; Humans ; Leg ; Models, Cardiovascular

· Mesenchymal stem cells ( MSCs ) are a population of multipotent stem cells with various neurotrophins from bone marrow which are widely used in tissue, cell repair and alternative research.Recently, some researches have shown that MSCs could enhance the viability of neurons under a pathological circumstance by secreting some neurotrophins. So the neuroprotection of MSCs can provide a new method of the treatment on retinopathy that it possible to promote cells survial and functional recovery.Here we make a brief review on the secretory function of neurotrophin and neuroprotective effects of MSCs on retinal cells and its application in the treatment of retinal disease.

Humans ; Immunohistochemistry ; Lymphoma, Large B-Cell, Diffuse ; classification ; pathology

Objective To evaluate the clinical features of nasopharyngeal carcinoma with different sur英文摘要>=rival time and to analyze the factors associated with prognosis improvement.Methods Three hundred and fifty three patients with nasopharyngeal carcinoma treated in our hospital from January 2000 to April 2002 were analyzed retrospectively.They were divided into three groups based on their survival time.One hundred and forty five patients were divided into A groups whose overall survival time were less than five years.Sixteen patients were included in B group whose overall survival time were greater than or equal to five years and less than ten years,and the other one hundred and ninety two patients were divided into C groups whose overall survival time were greater than or equal to ten years.The clinical features were compared and factors associated with survival were identified.Results The 5 and 10 years overall survival rates of the 353 nasopharyngeal carcinoma patients underwent radiotherapy were 58.924％ and 54.391％ respectively.Curative effect of early nasopharyngeal carcinoma was better.Cox regression analysis identified age,N stage,combined with chemotherapy or not and complete remission rate of nasopharynx and neck lymph were independent prognostic factors.Conclusion For nasopharyngeal carcinoma patients,early detection,early treatment,rational comprehensive treatment and complete remission after treatment and complications prevention are important.

Objective To analyze the risk factors that influence prognosis of pancreatic injury.Methods The clinical data of 73 patients with pancreatic injury were analyzed retrospectively.Univariate analysis and multivariate Logistic regression were performed to analyze the clinical parameters.Results Complications occurred in 27 patients with the overall incidence rate of 36.9％.6 patients died with the mortality of 8.2％.Result of univariate analysis indicated that the volume of blood loss,systolic blood pressure,injury grade by American Association surgery of Trauma (AAST),pancreatic leakage,time on admission were significant factors that influence the incidence rate of complications (P ＜ 0.05).The results of Multivariate Logistic regression indicated that the volume of blood loss,systolic blood pressure,injury grade by AAST,time on admission were independent predictors for prognosis in pancreatic injury (OR =3.764,0.940,7.315,1.501,all P ＜ 0.05).Conclusion It should pay attention to all the factors that influence the prognosis of pancreatic injury in clinic.Exact judgment and appropriate treatment plan are helpful to increase achievement ratio of pancreatic injury.

Objective To explore the effects of patient mutual help-oriented nursing model on social support and hope level in lung cancer patients.Methods Totally 72 lung cancer patients were recruited into the study and divided into the experimental group and the control group with 36 patients in each group.The control group was given routine care,while the experimental group received additional patient mutual help-oriented nursing interventions:physically and psychologically well recovered patients were asked to give emotional communication and interaction to patients newly diagnosed with lung cancer,The Social Support Scale and Herth Hope Index were used for evaluation after the intervention.Results The patients' social support and hope level of the intervention group were significantly better than those of the control group after intervention.Conclusions Patient mutual help-oriented nursing model can improve social support and hope level of lung cancer.

Objective To translate the English version of Career Needs Questionnaires-Short Form (CNQ-SF) into Chinese and to test the reliability and validity of the Chinese version of CNQ-SF in cancer patients.Methods Totally 232 patients with cancer were recruited and were investigated by the Chinese version of CNQ-SF.Results The internal consistency coefficient of the Chinese version of CNQ-SF ranged from 0.792 to 0.937.The content validity index was 0.94.Factor analysis got five factors,which explained 69.8％ of the total variance.Conclusions The Chinese version of CNQ-SF has been proved to be reliable and valid.h can be used as a valid tool for the measurement of information needs of cancer patients.

Objective To investigate the risk factors associated with surgical site infection (SSI) in patients with breast cancer,and provide the basis for preventing SSI.Methods Case-control study was used to investigate the clinical data of 630 patients of breast cancer retrospectively by single factor and multiple factors regressive analysis.Results The incidence rate of SSI was 3.65％ (23/630),the main pathogenic bacteria was staphylococcus aureus (14/20),single factor regressive analysis showed that granulocytopenia associated with chemotherapy,diabetes mellitus,time of drainage were the risk factors of SSI (P ＜ 0.05).Multiple factors regressive analysis showed that granulocytopenia associated with chemotherapy,time of drainage were the independent risk factors of SSI (P ＜ 0.05).Conclusion Granulocytopenia associated with chemotherapy,time of drainage are the independent risk factors of SSI and comprehensive preventive measures should be taken to control the incidence rate of SSI.

Objective To evaluate the therapeutic effects of platinum alone chemotherapy combined with radiotherapy for esophageal carcinoma without operation.Methods Form April 2008 to February 2010,47 initial treatment patients with esophageal carcinoma were treated by platinum alone chemotherapy (cisplatin or nedaplatin 20 mg/m2,one times per weeks) and conventional fractionated radiation therapy (200 cGy per fraction,2 times per day,5 days per week,to a total dose of 6 000-7 000 cGy).Results 1-,2-,3-,4-year overall survival rates were 63.83 ％ (30/47),40.43 ％ (19/47),38.30 ％ (18/47),30.77 ％ (4/13).4-year survival rate of 13 cases with lymph node metastasis was 0,it was lower than that of cases without lymph node metastasis (40 ％,4/10),the difference was statistically significant (x2 =6.295,P =0.012).The 3-year survival rates in cisplatin or nedaplatin combined with radiotherapy group were 31.25 ％ (5/16) and 41.94 ％ (13/31),the difference was not statistically significant (x2 =0.510,P =0.475).Conclusion Low doses of platinum alone chemotherapy combined with radiotherapy for the treatment of esophageal cancer are safe,but long-term efficacy needs to be confirmed in larger clinical trials.

Cancer stem cell niche provides a relatively stable microenvironment for cancer stem cell (CSC)existence,proliferation and differentiation.This microenvironment consists of kinds of cells,stroma and cytokines, etc. Within it , CSC can resist chemoradiotherapy. It has been shown that destruction of the microen vironment can significantly enhance the effect of chemoradiotherapy and improve prognosis of cancer patients.