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Objective To investigate the occurrence and reporting of sharp injuries among health care workers (HCWs)at all levels of hospitals in Xuzhou City,provide evidences for formulating protective measures against sharp injuries and improving the reporting system.Methods From July to August 2016,13 hospitals in Xuzhou City were randomly selected by multi-stage stratified random sampling method,the general information,occurrence of sharp injuries,and reporting situation was performed questionnaire survey.Results A total of 2 694 valid question-naires were collected,incidence,case incidence,and reporting rate of sharp injuries were 10.32%,12.84%,and 30.64% respectively.Case incidence of sharp injuries among HCWs in primary,secondary,and tertiary hospitals were 44.83%,11.53%,and 12.52% respectively,case incidences of sharp injuries in different levels of hospitals were significantly different (χ2＝55.148,P＜0.001).The main opportunity for sharp injuries was when HCWs re-turned needle cap (79 cases,22.83%),the main device involving sharp injuries was hollow-bore needle (297 cases, 85.84%).Incidences of sharp injuries among HCWs receiving different training were significantly different (χ2＝66.760,P＜0.001).Conclusion Current situation of sharp injuries among HCWs in this region is not optimistic, there are some problems such as poor training efficacy,low reporting rate and low use rate of safety devices,effec-tive measures should be taken to establish an effective monitoring and tracking system for sharp injuries,so as to re-duce the occurrence of sharp injuries.
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Objective To analyze the influence from strut numbers on biomechanical properties of Z-shaped stent-grafts, especially on their radial support performance and flexibility, so as to provide theoretical support for the design and clinical selection of Z-shaped stent-grafts. Methods Z-shaped stent-grafts with 5, 8, 10, 12 struts were established by finite element method to simulate the process of compression and bending behavior. Radial displacements were applied on surface of the stent-graft and opposite rotations were applied around the z-axis, until a bending angle of 40°was reached. Then parameters such as stent stress, radial support force, strains in graft, cross-section deflection, bending torque were extracted to evaluate the performance of different stent-grafts. Results Compared with stent-grafts with more strut numbers, 5-strut stent-graft showed a better radial support performance with the maximum radial force during compression, and it also generated the smallest 68 N•mm torque and 67.5% cross-section deflection. The tensile strain in graft of 5-strut stent-graft during the process of bending was relatively smaller. Conclusions The struts number of Z-shaped stent-grafts has a significant influence on biomechanical properties of the stent-grafts. Especially the Z-shaped stent-graft with relatively fewer strut numbers shows an advantage in evaluating radial support performance and flexibility such as the bending torque and the cross-section deflection, and is more suitable to be anchored and fit to the tortuous blood vessel, which will play a positive role in decreasing the complication such as endoleaks and thrombosis. The research findings can guide structure design of Z-shaped stent-grafts and the operation to make an optimal selection.
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Objective:To evaluate the validity and reliability of the Chinese version of the Eating Disorder Examination Questionnaire 6.0 (EDE-Q 6.0) in female patients with eating disorders.Methods:A total of 239 patients with eating disorder and 142 healthy controls who were recruited consented to participate in the study and completed Chinese EDE-Q 6.0.Confirmatory factor analysis was used in patients to compare the original 4-factor model,1-factor model and 3-factor model.The criterion validity was tested with the Eating Disorder Inventory (EDI).Mann-Whitney U analysis was used to compare the differences of EDE-Q 6.0 scores on the two samples to test the empirical validity,and ROC analysis was used to determine the cut-off value.The internal consistency of the scale was tested in two samples.Among all participants,89 patients and 31 healthy controls were retested 1 month later.Results:The original 4-factor model fit better than the other two.The EDE-Q 6.0 total score and the EDI total score had a high consistency in the total sample,patients and controls,respectively (ICC =0.88,0.87,0.73).Patients had higher scores on the EDE-Q 6.0 than controls (Ps ＜0.01).The mean area under the curve (AUC) of EDE-Q 6.0 was 0.91,the optimal cut-off point of EDE-Q 6.0 was total score ≥ 1.27,sensitivity and specificity were 79.4％ and 88.2％ respectively.The Cronbach α coefficients were 0.95,0.91,and 0.88 for the total sample,patients and controls respectively.The test-retest reliabilities were 0.73 for the total scale,0.58,0.68,0.69 and 0.71 for the 4 factors.Conclusion:The Chinese version of the Eating Disorder Examination Questionnaire 6.0 have good psychometric properties and diagnosis accuracy,and it could be used to assess the severity of clinical symptoms.
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Objective To analyze the influence from strut numbers on biomechanical properties of Z-shaped stentgrafts,especially on their radial support performance and flexibility,so as to provide theoretical support for the design and clinical selection of Z-shaped stent-grafts.Methods Z-shaped stent-grafts with 5,8,10,12 struts were established by finite element method to simulate the process of compression and bending behavior.Radial displacements were applied on surface of the stent-graft and opposite rotations were applied around the z-axis,until a bending angle of 40° was reached.Then parameters such as stent stress,radial support force,strains in graft,cross-section deflection,bending torque were extracted to evaluate the performance of different stentgrafts.Results Compared with stent-grafts with more strut numbers,5-strut stent-graft showed a better radial support performance with the maximum radial force during compression,and it also generated the smallest 68 N · mm torque and 67.5％ cross-section deflection.The tensile strain in graft of 5-strut stent-graft during the process of bending was relatively smaller.Conclusions The strut number of Z-shaped stent-grafts has a significant influence on biomechanical properties of the stent-grafts.Especially the Z-shaped stent-graft with relatively fewer strut numbers shows an advantage in evaluating radial support performance and flexibility such as the bending torque and the cross-section deflection,and is more suitable to be anchored and fit to the tortuous blood vessel,which will play a positive role in decreasing the complication such as endoleaks and thrombosis.The research findings can guide structure design of Z-shaped stent-grafts and optimal selection for surgery.
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Objective To analyze the influence from strut numbers on biomechanical properties of Z-shaped stentgrafts,especially on their radial support performance and flexibility,so as to provide theoretical support for the design and clinical selection of Z-shaped stent-grafts.Methods Z-shaped stent-grafts with 5,8,10,12 struts were established by finite element method to simulate the process of compression and bending behavior.Radial displacements were applied on surface of the stent-graft and opposite rotations were applied around the z-axis,until a bending angle of 40° was reached.Then parameters such as stent stress,radial support force,strains in graft,cross-section deflection,bending torque were extracted to evaluate the performance of different stentgrafts.Results Compared with stent-grafts with more strut numbers,5-strut stent-graft showed a better radial support performance with the maximum radial force during compression,and it also generated the smallest 68 N · mm torque and 67.5％ cross-section deflection.The tensile strain in graft of 5-strut stent-graft during the process of bending was relatively smaller.Conclusions The strut number of Z-shaped stent-grafts has a significant influence on biomechanical properties of the stent-grafts.Especially the Z-shaped stent-graft with relatively fewer strut numbers shows an advantage in evaluating radial support performance and flexibility such as the bending torque and the cross-section deflection,and is more suitable to be anchored and fit to the tortuous blood vessel,which will play a positive role in decreasing the complication such as endoleaks and thrombosis.The research findings can guide structure design of Z-shaped stent-grafts and optimal selection for surgery.
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Objective To investigate the effects of Shuxuetong on hemodynamics and serum sICAM-1,IL-6,TNF-α in patients with cerebral infarction.Methods A hundred patients with cerebral infarction were randomly divided into observation group and control group from Jan 2011 to Jan 2015.Fifty patients in control group were treated with conventional therapy alone and 50 patients in observation group were treated with conventional therapy combined with intravenous injection with Shuxuetong.The changes of hemodynamics were observed before and after treatment and the levels of serum sICAM-1,IL-6,TNF-α were detected by enzyme linked immunosorbent assay (ELISA).Results No statistical significance was found in hemodynamics of control group before and after treatment (P ＞0.05).The indexes of hemodynamics in observation group were significantly improved compared with those in observation group before treatment and those in control group after treatment (P＜ 0.05).The levels of serum sICAM-1,IL-6,TNF-α were significantly reduced in two groups after treatment (P ＜0.01) and the levels of serum sICAM-1,IL-6,TNF-α after treatment were significantly lower in observation group than those in control group (P＜0.01).Conclusion Shuxuetong can effectively improve the indexes ofhemodynamics and reduce the levels of serum sICAM-1,IL-6 and TNF-α.It has a positive effect on the treatment of cerevral infarction.
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Objective To analyze the clinical characteristics of pituitary stalk interruption syndrome(PSIS). Methods The clinical data including clinical manifestations,laboratory tests,and imaging findings of 114 PSIS patients in our hospital were retrospectively analyzed. Results Of these 114 PSIS patients,102 cases (89.4%) were male. The average age was 21.1?6.1 years. A history of breech delivery was documented in 91 cases (91.9%). Short stature was found in 89 cases (71.8%) and bone age delayed (6.1?5.1) years. Secondary sex characteristics were poor or undeveloped in most patients. The prevalence of deficiencies in growth hormone,gonadotropins,corticotropin,and thyrotropin were 100.0%,94.0%,84.2%,and 74.6%,respectively. Hyperprolactinemia was found in 28.1% of patients. Three or more pituitary hormone abnormalities were found in 105 cases(92.1%). Compared with the 5 cases with history of cephalic delivery,no difference were found in the aspects of height(t=0.297,P=0.634),penile length(t=1.205,P=0.882),testicular volume (U=99.000,P=0.348),growth hormone peak (U=89.000,P=0.186),adrenocorticotropic hormone peak(U=131.000,P=0.967),luteinizing hormone peak(U=98.500,P=0.582),thyroid-stimulating hormone (U=82.000,P=0.162),and the height of anterior pituitary (t=1.676,P=0.107) in the 53 cases with history of breech delivery. Conclusions The clinical manifestations,symptoms,hormone deficiencies were severe in our series. The condition severities were not remarkably different in patients with different delivery ways.
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Adolescente , Adulto , Feminino , Humanos , Masculino , Adulto Jovem , Nanismo , Imageamento por Ressonância Magnética , Doenças da Hipófise , Hipófise , Patologia , Prevalência , Estudos RetrospectivosRESUMO
Objective To study biomechanical properties of two types of cylindrical nitinol stent-grafts under working condition of self-expanding, full deployment and bending, and analyze effects of structural change on biomechanical indexes of the grafts by numerical simulation methods. MethodsFirstly, the finite element models of two annular stent-grafts (i.e. stent-graft Ⅰ, stent graft Ⅱ, and a connecting rod was added to each stent unit of stent-graft Ⅱ for reinforcement) and target vessels were built. The stent-graft was transported to target vessel by delivery sheath, which was then removed to self-expand the stent-graft, and the contact between the vessel and the stent-graft was established. Secondly, the arterial pressure of 6.65-19.95 kPa (50-150 mmHg) was applied to inner surface of the stent-graft when the stent graft was fully deployed. Thirdly, the angular displacement was applied to both ends of the stent-graft to bend and deform the stent-graft. Finally, the maximum Von Mises stress (VMS) of the deformed vessel, the maximum principal strain (MPS), the maximum VMS and structural changes of the stent-graft were analyzed. ResultsFor both the stent-graft Ⅰ and Ⅱ, when they were self-expanding, the maximum VMS on the vessel was 0.349 MPa and 0.371 MPa, respectively; when they were fully deployed, the mean strain was 0.086% and 0.053%, the alternating strain was 0.049% and 0.027%, the maximum VMS on the membrane was 2.098 MPa and 2.430 MPa, respectively; when they were bent, the MPS was 0.069% and 0.101%, respectively, with more serious deformation on stent-graft Ⅰ. ConclusionsThe strain and stress of two stent-grafts under each working condition were less than their own material yielding limit. Stent-graft Ⅱ showed larger radial force in self-expanding, smaller strain under arterial pressure and better flexibility in bending deformation due to its connecting rod between each stent unit. These research results would provide an analysis method for structure design and material selection of the stent-graft, as well as a more intuitive and accurate technique guidance for intervention operation of the stent-graft in clinic.
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Objective To analyze different biomechanical properties between Coflex and X-STOP device in the treatment of lumbar spinal stenosis (LSS), and provide references for design improvement of interspinous process spacer. MethodsFour finite element models, i.e., the L2-5 healthy segment model, the mild degenerated L4/5 segment model, the X-STOP-fixed L4/5 segment model, the Coflex-fixed L4/5 segment model, were constructed based on the normal lumbar CT images of a volunteer, and the models under flexion, extension, lateral bending and axial rotation were simulated to compare range of motion (ROM) changes and stress distributions on the spinous process and interspinous process spacer. ResultsX-STOP and Coflex decreased extension ROM by -48.12% and -75.35%, respectively, and released disc pressure by -58.03% and -80.75%, respectively. Coflex even restricted flexion ROM by -59.58% and reduced flexion disc pressure by -52.84%. No distinct changes appeared in lateral bending and axial rotation ROMs and disc pressure. The largest Von Mises stress appeared at the U-shape place during flexion in Coflex and at connection between left wing and screw during torsion in X-STOP, respectively. The largest contact pressure between Coflex and spinous process was 31.38 MPa during bending, and that between X-STOP and spinous process was 46.86 MPa during torsion. Conclusions Both X-STOP and Coflex are an effective treatment for LSS, and can effectively restrict the ROM of extension and reduce the disc pressure, without affecting the adjacent segments.
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<p><b>OBJECTIVE</b>To understand allergic diseases related factors in Changzheng Town, Putuo District infants and young children.</p><p><b>METHOD</b>Pregnant women registered in Putuo District, Changzheng Town Community Health Service Center Child Health Clinic within the period from January to December, 2008 were enrolled into this survey, a questionnaire survey. The infants were followed up from birth to 2 years of age. The mother and child survey was conducted for 746 pairs, and 684 pairs had complete data. SAS V9.1 statistical software was used for data processing and statistical analysis.</p><p><b>RESULT</b>The survey showed that prevalence of eczema, allergic rash, and wheezing was 27.9%, 18.9%, and 3.9%, respectively. Multivariate logistic regression analysis showed that allergy in either parent and addition of foods other than milk in infants before 4 months of age were risk factors for eczema; allergy in either parent was also risk factors for allergic rash. Exclusive breastfeeding from birth to 6 months of age was a protective factor for wheezing in infants. Other factors such as parental history of asthma, vitamin supplements to the mothers during pregnancy, mothers' special diet habits, calcium level of infants, etc. had no significant correlation with allergic disorders in infants.</p><p><b>CONCLUSION</b>The risk factors for allergic disorders in infants included allergy in either parent and dietary factors of the infants themselves (prematurely adding other foods). Breastfeeding (for 0 - 6 months of age) was a protective factor for infants' wheezing.</p>
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Adulto , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Gravidez , Asma , Epidemiologia , Genética , Aleitamento Materno , Estudos de Coortes , Eczema , Epidemiologia , Genética , Hipersensibilidade , Epidemiologia , Modelos Logísticos , Análise Multivariada , Pais , Fatores de Risco , Inquéritos e QuestionáriosRESUMO
<p><b>OBJECTIVE</b>To explore the correlation between 12p13 single nucleotide polymorphism (SNP) rs12425791 and Chinese medical syndrome types of ischemic stroke patients of the Han nationality.</p><p><b>METHODS</b>A case-control study was used. Recruited were 148 ischemic stroke patients of the Han nationality (67 patients of phlegm syndrome and 81 patients of blood stasis syndrome). Another 192 healthy subjects were recruited as the control group. The genotypes of rs12425791 were performed by TaqMan SNP genotyping assays to analyze the distribution of genes and the distribution frequency of alleles.</p><p><b>RESULTS</b>There was no statistical difference in the genotype and alleles of rs12425791 between the ischemic stroke patients of phlegm syndrome and the control group, or between the ischemic stroke patients of blood stasis syndrome and the control group (P > 0.05).</p><p><b>CONCLUSION</b>Our results did not support that 12p13 common variant rs12425791 was correlated with the pathogeneses of ischemic stroke patients of phlegm syndrome and ischemic stroke patients of blood stasis syndrome.</p>