Objective To investigate the application status of aspirin for secondary prevention among elderly patients with ischemic stroke in some community hospitals in Shanghai,and explore the main causes for inappropriate use of aspirin and the effect of aspirin on the prevention of ischemic stroke recurrence. Methods The cross-sectional investigation was employed,and 223 patients from 10 community hospitals of Shanghai were divided into regularly-received aspirin group(n=98) and irregularly-received aspirin group(n=125).The application status of aspirin was investigated and the relationship between aspirin application and ischemic stroke recurrence was explored. Results Fifty-one cases in irregularly-received aspirin group(40.80%) stopped aspirin use or reduced the dose due to possible adverse effects,which accounted for 22.87% of the total population investigated,and 42 cases in irregularly-received aspirin group(33.60%)were never suggested to use aspirin or only used traditional Chinese medicine.The rate of ischemic stroke recurrence was 30.61%(30 cases) in regularly-received aspirin group,and 49.60%(62 cases) in irregularly-received aspirin group,which existed significant differences between these two group(P

Objective: To analyze the working memory impairment in patients with different degrees of depressive disorder and its influencing factors, so as to provide the basis for the clinical evaluation of cognitive function in patients with depressive disorder. Methods: From January 2019 to November 2020, the patients with depressive disorder were selected in the psychiatry and clinical psychology departments of a tertiary hospital. Demographic information, disease course and medication were collected. Depression subscale ( DEP ) of Mental Health Inventory ( PHI ) was used to measure the degree of depressive disorder. N-back tasks were used to test working memory, with error rate and reaction time as experimental variables to compare the working memory impairment of patients with different degrees of depressive disorder. The multivariate linear regression model was used to analyze the influencing factors for working memory impairment in patients with depressive disorder. Results: A total of 75 patients with depressive disorder were included, including 45 mild cases and 30 moderate and severe cases. The error rates of mild cases and moderate and severe cases in the 3-back task were ( 27.47±20.59 )% and ( 39.60±25.95 )%, the response time between the two groups in 0-back, 1-back, 2-back and 3-back task were ( 458.29±104.19 ) ms and ( 527.90±99.58 )ms,( 499.87±85.46 ) ms and ( 574.57±126.25 ) ms, ( 567.44±114.86 ) ms and ( 675.37±137.54 ) ms, ( 663.76±167.99 ) ms and ( 753.27±152.06 ) ms, the differences between two groups were significant ( P<0.05 ). The multivariate linear regression analysis showed that the severity of depressive disorder was correlated with the response time of 0-back to 3-back tasks and the error rate of 3-back task; whether patients took medicine or not was depressive disorder correlated with the 0-back task response time ( all P<0.05 ). Conclusion There are differences in working memory impairment among patients with different degrees of depressive disorder and the severity of impairment is correlated with the severity of depressive disorder and the use of antidepressant drugs.

Objective: To evaluate the risk of depressive disorders using memory task indicators, so as to provide insights into clinical assessment of depressive disorders. Methods: A total of 68 patients with depressive disorders undergoing treatments in the departments of psychiatrics and clinical psychology in a tertiary hospital during the period from January to September, 2021 were enrolled as the case group, while a total of 31 hospital employees, social volunteers and university students served as controls. The error rate and response time of classical memory task experiments were compared between the two groups, including implicit memory, short-term memory and working memory tasks. In addition, the predictive indicators of depressive disorders were identified using multivariable logistic regression analysis and receiver operative characteristics (ROC) curve. Results: The case group included 29 men and 39 women and had a mean age of (24.12±7.40) years, including 46 subjects with an educational level higher than diploma. The control group included 15 men and 16 women and had a mean age of (26.45±6.65) years, including 23 subjects with an educational level higher than diploma. Multivariable logistic regression analysis showed significant associations of age of >18 years (OR=3.431, 95%CI: 1.259-9.350), error rate of 2-back task (OR=1.056, 95%CI: 1.016-1.097) and error rate of short-term memory tasks (OR=1.078, 95%CI: 1.009-1.152) with the development of depressive disorders. ROC curve analysis showed that the error rate of 2-back tasks showed an area under the ROC curve (AUC) of 0.730 (95%CI: 0.630-0.831), cutoff of 22.5%, sensitivity of 42.6% and specificity of 93.5% for prediction of the risk of depressive disorders, and the error rate of short-term memory tasks showed an AUC of 0.717 (95%CI: 0.605-0.829), cutoff of 23.5%, sensitivity of 67.6% and specificity of 71.0% for prediction of the risk of depressive disorders. In addition, the combination of the error rate of 2-back tasks and the error rate of short-term memory tasks showed an AUC of 0.829 (95%CI: 0.734-0.923), sensitivity of 75.0% and specificity of 80.6% for prediction of the risk of depressive disorders. Conclusion Short-term and working memory task indicators are feasible for assessment of the risk of depressive disorders.

Objective To establish and confirm the hepatitis B surface antigen(HBsAg) enzyme linked immunosorbent assay(ELISA) high specificity S/CO limit as blood donor deferral criterion.Methods A total of 783 HBsAg ELISA reactive and 588 non-reactive samples were collected, and confirmed by HBsAg electrochemiluminescence detection and neutralization test.Receiver operating characteristic curve (ROC curve) was used to evaluate the S/CO limit under 95% and 99% specificity.Another 124 HBsAg ELSIA reactive samples were tested for five kinds of hepatitis B virus(HBV) markers by using electrochemiluminescence detection to verify the blood donor deferral limit.The blood donor deferral limits of 3 laboratories, using the same reagents, were compared.Results The 95% specificity S/CO limit of two reagents were 0.24 and 0.65, the 99% specificity S/CO limit of two reagents were 3.89 and 3.62.The 99% specificity S/CO limit was set as the blood donor deferral criterion.Verify test indicated that the samples, with S/CO higher than the blood donor reentry limit of reagent 1 and 2, were all from HBV infected donor.The 99% specificity S/CO limits of reagent 1 in the other three laboratories were 3.77, 3.60 and 13.42 respectively.And the 99% specificity S/CO limits of reagent 2 in the other three laboratories were 27.73, 31.75 and 1.17.Conclusion The blood donor deferral limit of HBsAg ELISA could identify the true positive blood donor, and reduce the number of blood donor, entering the reentry process.It might not suit to adopt a unified donor deferral limit in different laboratories, even using the same reagents.

Objective To compare the effect of different ways of water supply and whether or not drain water from waterlines for overnight on bacterial counts in dental unit waterlines(DUWLs).Methods In the first phase,6 sets of DUWLs were randomly divided into 2 groups (external storage tank water supply group and municipal water sup-ply group);in the second phase,6 sets of DUWLs were all changed to use external storage tank and randomly di-vided into 2 groups (draining water for overnight group and without draining water for overnight group),bacterial count before and within one week of disinfection between two groups at two phases were compared respectively. Results In the first phase,handpiece water of DUWLs was most seriously contaminated by bacteria,the average colony count was 4117 CFU/mL,qualified rate was 15.38%.Before disinfection,no significant difference in bacte-rial count were found among each groups (all P>0.05),bacterial count of DUWLs of all groups severely exceeded the standard(all >3000 CFU/mL).Comparison of bacterial count in DUWLs from different water supply routes after disinfection was not significantly different on day 1(P>0.05),but were significantly different at day 2-7(all P<0.05).On the second day after disinfection,municipal water supply group began to exceed bacteria standard;on the third day after disinfection,external storage tank group began to exceed bacteria standard.Bacterial count in DUWLs after disinfection between draining water for overnight group and without draining water for overnight group was no significantly different on day 1(P>0.05),but were significantly different on day 2-7(all P<0.05). On the fourth day of disinfection,bacterial count of without draining water for overnight group exceeded standard.On day 7 of disinfection,bacterial count in draining water for overnight group exceeded>100 CFU/mL.Conclusion Use of external storage tank,daily change of sterile distilled water,and daily emptying water for overnight can effectively reduce bacterial count in DUWLs.

Adult ; Female ; Humans ; Occupational Diseases ; Plastics ; Trimethyltin Compounds ; poisoning ; Waste Management

Epstein-Barr Virus Infections ; Herpesvirus 4, Human ; Humans ; Lymphoproliferative Disorders ; classification ; pathology ; virology

Objective To evaluate the effects of allografi and rhBMP-2 in posterolateral lumbar spinal fusion in a rabbit model.Methods Thirty rabbits were randomly divided into three groups:autogenous lilac crest bone graft group,rhBMP-2/allograft composite group,and allograft group.The animals were killed and sampled six weeks after the surgery.The lumbar intertransverse process fusion for the animals was assessed by manual palpation,biomechanical testing,radiography,histology and quantitative histology of spine fusion mass in a 6-week observation.Results The ratio of fusion in rhBMP-2/allograft composite group(90%)was significantly higher than that in autogenous lilac crest bone graft group(40%)and allograft group(20%)(P＜0.05).The autogenous lilac crest bone graft group and rhBMP-2/allograft composite group showed significantly higher uniaxial tensile strength than allograft group.The au- togenous lilac crest bone graft group and rhBMP-2/allograft composite group also showed significantly more new bone formation than allograft group,but there was no significant difference between the former two grnups.Conclusion rhBMP-2/allograft composite may be an ideal substitute for autograft in lumbar spinal fusion.

Objective To systematically evaluate the efficacy and safety of stereotactic body radiotherapy (SBRT) for resectable stage Ⅰ non-small cell lung cancer (NSCLC).Methods Clinical trials of SBRT or surgery for resectable stage Ⅰ NSCLC were collected by computerized search of Cochrane Library,MEDLINE,EMbase,CBM,CNKI,and VIP.Literature selection,quality evaluation,and data extraction were performed by two inspectors based on the inclusion and exclusion criteria.A meta-analysis was performed on the enrolled studies using RevMan 5.3 software.Results A total of four clinical trials involving 410 patients were included.The results of meta-analysis showed that there was no significant difference in 3-year overall survival rate between SBRT and surgery (RR=1.13,95％ CI=0.66-1.94,P=0.66);there was no significant difference in local control rate between SBRT and surgery (RR=0.71,95％ CI=0.26-1.93,P=0.50);patients treated with SBRT had significantly lower incidence rates of grade 3-4 adverse reactions than those treated with surgery (RR=0.29,95％ CI=0.16-0.53,P=0.000).Conclusions SBRT shows equivalent efficacy to surgery in the treatment of resectable stage Ⅰ NSCLC.However,due to the limitations in this systematic evaluation,the conclusion needs to be further confirmed by large randomized controlled trials.

Background: The etiology of Kienb?ck's disease is controversial, and the blood supply is a possible pathogenic factor. The red lead (Pb3O4) angiography with micro?computed tomography (micro?CT) of lunate to investigate intralunate arteries has rarely been reported. This study aimed to investigate a new, reasonable, and simplified technique to study the intraosseous arterial pattern of normal lunates. Methods: This study investigated the intraosseous arterial pattern of six normal cadaveric lunates through Pb3O4 injection and three?dimensional reconstruction with micro?CT. The intraosseous arteries of all specimens were clearly enhanced. The data of enhanced arteries and nutrient foramina were shown as median (Q1, Q3) and analyzed with Wilcoxon signed?rank test. Results: The mean number of total nutrient foramina was 2.00 (1.75, 2.00) on the palmar side and 3.50 (2.50, 4.25) on the dorsal side. The number with enhanced arteries on the palmar side was 1.00 (0.75, 2.00) and on the dorsal side was 3.50 (1.75, 4.00). There were no significant differences between the number of nutrient foramina on the palmar and dorsal sides of the lunates, no matter the total number or enhanced arteries. The intraosseous arterial pattern in normal lunates can be classified into three types: the dominate stems from the palmar side, from the dorsal side, and from both sides with anastomosis. Conclusions: The Pb3O4 angiography with micro?CT is a simplified, quicker, and reliable method to study intraosseous arteries.