Research on Cost Control and Rationalization Application Supervision of Medical Equipment Consumables Based on Analytic Hierarchy Process / 中国医疗器械杂志

OBJECTIVE@#To analyze the medical equipment operation data of 44 clinical departments in the hospital from three aspects: materials and consumables, operation and maintenance depreciation, and operation management.@*METHODS@#To formulate the evaluation standards and scoring criteria for the operation indicators, the lowest score is 0 points, and the highest score is 5 points. Based on the operation indicators of medical equipment, establish a hierarchical structure model, determine the criterion layer and sub-criteria layer, construct a judgment matrix, normalize it, and calculate the weight coefficient.@*RESULTS@#Count equipment operation data in 2021 and 2022. Score according to the assessment standards, assign weights through the analytic hierarchy process, calculate the total score and sort, and making a special analysis on the top 10 departments and departments with a score below 4 points, and formulate a rectification plan.@*CONCLUSIONS@#The establishment of index assessment standards and the weight distribution of AHP can effectively enhance the control of equipment operating costs.

Analysis of noise hazard characteristics in automobile sand casting industry / 公共卫生与预防医学

Objective To study the characteristics of noise hazards in automobile sand casting industry and understand the impact of noise on the health of automobile foundry workers, and to provide scientific data support for the control of noise hazards. Methods An automobile sand casting enterprise was selected as the research object. The post noise intensity test results from 2010 to 2019, the noise spectrum test results of each post in 2019, and the prevalence of occupational noise deafness in the 10 years from 2010 to 2019 were analyzed and sorted out. Using chi-square test and t-test the noise hazard characteristics and noise intensity changes were statistically analyzed. Results 1. The noise LEX.8h exceeding standard rate of foundry enterprises in the 10 years from 2010 to 2019 was not statistically significant（χ2=6.76, P=0.66), and the mean value of noise LEX.8h fluctuated horizontally in the 10 years, which was basically stable between 80 - 90 dB (A). 2. The mean value of noise intensity of sand falling, sand preparation, cleaning and shot blasting in the first five years was significantly different compared to that in the last five years. There was no statistically significant difference in other posts. 3. Among all posts in the foundry sand casting industry, the noise spectrum of core-making and cleaning posts was mainly medium and high frequency, while the noise spectrum of other posts was mainly medium and low frequency. 4, Cases of occupational noise deafness were mainly concentrated in cleaning and polishing workers, melting chemical workers, inspectors and other types of workers. Conclusions The noise hazards in the automobile foundry sand casting industry are mainly concentrated on the posts of molding, and sand falling, and the noise intensity and the over standard rate remain high in the past 10 years. The noise of each post is mainly medium and low frequency, and the noise of a few individual posts is mainly medium and high frequency. In recent years, due to the automatic renewal of equipment, the noise intensity of some posts such as sand dropping, sand mixing, cleaning and shot blasting has decreased, but the overall noise exceeding standard rate has basically not changed, and the noise hazard is still serious. The noise hazard of foundry sand casting enterprises is difficult to be controlled, and the risk of hearing loss of foundry workers is still high.

Wnt5a up-regulates Periostin through CaMKII pathway to influence periodontal tissue destruction in early periodontitis.

Periostin is essential for periodontal tissue integrity and homeostasis and also associated with periodontitis and periodontitis healing. This study aims to investigate the temporal and spatial expression of Periostin and Wnt5a/CaMKII in periodontitis and how the Wnt5a regulates Periostin through CaMKII signaling pathway in PDLCs in inflammatory environment. The experimental periodontitis mice were adopted to clarify the temporal and spatial expression of Wnt5a, CaMKII and Periostin during early periodontitis. And the Wnt5a, CaMKII and Periostin expression pattern and regulation mechanism in PDLCs were clarified in Porphyromonas gingivalis Lipopolysaccharide (P.g. LPS) induced inflammatory condition. Along with the periodontitis development, Wnt5a, CaMKII and Periostin significantly increased in periodontal ligament and partially increased in gingiva during 0 to 6 day (P < 0.05). They were involved in early periodontitis homeostasis especially in periodontal ligament tissue. Meanwhile, Wnt5a, CaMKII and Periostin were significantly decreased at 12 h (P < 0.05) and increased at 48 h (P < 0.05) in PDLCs after induced by P.g. LPS. Besides, Wnt5a significantly enhanced total CaMKII protein (P < 0.05), pCaMKII (P < 0.001) and Periostin (P < 0.001), and this could be blocked by CaMKII inhibitor KN93 (P < 0.05). In conclusions, in early periodontitis, Wnt5a/CaMKII and Periostin should be involved in maintaining periodontal homeostasis and Wnt5a could up-regulate Periostin via CaMKII pathway in inflammation, which would provide new clues for us to understand the pathogenesis of periodontitis and develop better therapeutic strategies.

Clinical efficacy in 23 advanced solid tumor patients experiencing immune-related adverse events after treatment with immune checkpoint inhibitors / 中华微生物学和免疫学杂志

Objective:To observe the baseline characteristics and clinical efficacy in cancer patients who were treated with immune checkpoint inhibitors (ICIs) and experienced immune-related adverse events (irAEs).Methods:The clinical efficacy in cancer patients experiencing irAEs was retrospectively analyzed, and the objective response rate, progression-free survival, and overall survival were evaluated.Results:The median onset time of irAEs in 23 patients was 3.17 months. There were 47.8% (11/23) patients with multi-system irAEs, 63.3% (7/11) of which were non-simultaneous. The most common irAEs were immune-related pneumonia, hypothyroidism and immune-related liver dysfunction. Complete remission, partial remission and stable disease were respectively achieved in 0, 10 and 11 cases, while the other two patients developed progressive disease. The objective response rate was 43.5% and the disease control rate was 91.3%. With a median follow-up period of 16.5 months, 17 patients (73.9%) had progressive disease and the median progression-free survival was 9.63 months. Eight patients (34.8%) died before reaching the median overall survival. The progression-free survival and overall survival of patients with irAEs ≥grade 3 were significantly shorter than those with irAEs of grade 1-2 ( P<0.01). Conclusions:The occurrence of irAEs might correlate with the short-term efficacy and clinical benefits in patients treated with ICIs.

Influencing factors of cerebrovascular hemodynamics indexes in some minority populations in Guizhou province / 中华健康管理学杂志

Objective@#This study aimed to analyze the influencing factors of cerebral hemodynamics index (CVHI) and provide evidence on early warning of stroke in ethnic minorities (Tujia, Buyi, Dong, Miao).@*Methods@#From April 2017 to April 2019, ethnic minorities were examined in the Health Management Center of the Affiliated Hospital of Guizhou Medical University to determine the nationality, age, sex, medical history (such as hypertension, hyperlipidemia, and diabetes) and menstruation in women; measure physiological indexes, such as height and weight, and biochemical indexes, such as blood glucose, blood lipid, and serum uric acid levels; and conduct CVHI and bilateral arm ankle pulse wave conduction velocity (baPWV) detection. The CVHI integral was calculated and divided into normal CVHI group (≥75 points) and abnormal CVHI group (<75 points) to describe the characteristics of population distribution and analyze the related influencing factors of CVHI.@*Results@#A total of 1 236 individuals belonging to ethnic minorities [age, 52.0±9.0 years; 575 men (46.52%) and 661 women (53.48%)]were included in the study. In ethnic minorities, 35.11% had abnormal CVHI. There was no significant difference in abnormal CVHI among ethnic groups, from highest to lowest, in Buyi nationality (38.22%), Miao nationality (37.93%), Dong nationality (32.70%), and Tujia nationality (32.36%). Minority women, menopausal patients, and patients with history of hypertension, diabetes, and hyperlipidemia more frequently had abnormal CVHI than men and non-menopausal and normal women (43.57%, 47.48%, and 57.66%, 76.19%, and 54.00% vs. 25.39%, 39.51%, and 32.30% 35.31%, and 34.74%, P<0.05). The mean BMI, systolic blood pressure (SBP), diastolic blood pressure (DBP), and FPG and TG levels, baPWV in the abnormal CVHI group were higher than those in the normal CVHI group, and height was lower the abnormal CVHI group than that in the normal group (P<0.05). The correlation analysis showed that height (r=0.309) was positively correlated with CVHI integral and SBP (r=-0.239), DBP (r=-0.189), and baPWV (r=-0.184) were negatively correlated with CVHI integral (P<0.001). The higher the height, the higher the CVHI and the lower the risk of stroke, and the higher the SBP, DBP, and baPWV, the lower the CVHI score and the higher the risk of stroke. The factor logistic regression analysis showed that old age (OR, 1.992; 95%CI, 1.405-2.825); female sex (OR, 2.240; 95%CI, 1.750-2.866); history of hypertension (OR, 3.363; 95%CI, 1.665-6.791), menopause (OR, 1.384; 95%CI, 1.016-1.885), and high SBP (OR, 1.031; 95%CI, 1.019-1.044), BMI (OR, 1.091; 95%CI, 1.048-1.135), FPG level (OR, 1.169; 95%CI, 1.017-1.344), and baPWV (OR, 1.002; 95%CI, 1.001-1.002) were risk factors for abnormal CVHI, and increased height (OR, 0.936; 95%CI 0.920-0.952) was the protective factor.@*Conclusion@#Individuals in ethnic minorities frequently have abnormal CVHI. The main risk factors of CVHI are the elderly, female, history of hypertension, menopause, systolic blood pressure, body mass index, fasting blood glucose and baPWV. It is necessary to strengthen the health management of ethnic minority gathering places, controling body weight, regularly monitoring of blood pressure and blood glucose and lipid levels, and examing cerebral vascular hemodynamics.

Investigation on contamination of high-frequency contact surfaces near dental chairs in outpatient department of Stomatology / 中国实用护理杂志

Objective:To observe and compare the dynamic changes of contamination of high-frequency contact surfaces near dental chairs in outpatient department of stomatology, so as to provide reference for the disinfection management of the surface contamination near dental chairs in outpatient department of stomatology.Methods:The chair-side operating tables and treatment vehicle tables in the Department of periodontology, general stomatology and orthodontics of Stomatology center of our hospital were selected as the subjects of investigation. Biofluorescence detector was used to smear and sample the designated areas immediately after disinfection and 1 hour, 2 hours and 3 hours after disinfection respectively. Each site was collected and observed for 5 working days.Results:The qualified rate of sample was 100% immediately after disinfection, and the contamination exceeded the standard one hour, two hours and three hours the qualified rate of sampling was 26.7% (8/30) , 23.3% (7/30) and 13.3% (4/30) after disinfection. There was a significant difference in the qualified rate of sample at each time point ( χ2 value was 59.155, P<0.05). One hour, two hours and three hours after disinfection, the contamination of chair-side tables the qualified rate of sampling was 26.7% (4/15) , 20.0% (3/15) and 13.3% (2/15) and treatment vehicles the qualified rate of sampling was 26.7% (4/15) , 26.7% (4/15) and 13.3% (2/15) exceeded the standard and there was no significant difference in the qualified rate of sample at each point ( χ2 value was 0.034, P>0.05). Conclusion:The outpatient department of stomatology should pay attention to the disinfection management of high-frequency contact surfaces near dental chairs, and adjust the disinfection frequency reasonably according to the change of pollution to ensure the surface hygiene and meets the standard requirements.

Influencing factors of cerebrovascular hemodynamics indexes in some minority populations in Guizhou province / 中华健康管理学杂志

Objective:This study aimed to analyze the influencing factors of cerebral hemodynamics index (CVHI) and provide evidence on early warning of stroke in ethnic minorities (Tujia, Buyi, Dong, Miao).Methods:From April 2017 to April 2019, ethnic minorities were examined in the Health Management Center of the Affiliated Hospital of Guizhou Medical University to determine the nationality, age, sex, medical history (such as hypertension, hyperlipidemia, and diabetes) and menstruation in women; measure physiological indexes, such as height and weight, and biochemical indexes, such as blood glucose, blood lipid, and serum uric acid levels; and conduct CVHI and bilateral arm ankle pulse wave conduction velocity (baPWV) detection. The CVHI integral was calculated and divided into normal CVHI group (≥75 points) and abnormal CVHI group (<75 points) to describe the characteristics of population distribution and analyze the related influencing factors of CVHI.Results:A total of 1 236 individuals belonging to ethnic minorities [age, 52.0±9.0 years; 575 men (46.52%) and 661 women (53.48%)]were included in the study. In ethnic minorities, 35.11% had abnormal CVHI. There was no significant difference in abnormal CVHI among ethnic groups, from highest to lowest, in Buyi nationality (38.22%), Miao nationality (37.93%), Dong nationality (32.70%), and Tujia nationality (32.36%). Minority women, menopausal patients, and patients with history of hypertension, diabetes, and hyperlipidemia more frequently had abnormal CVHI than men and non-menopausal and normal women (43.57%, 47.48%, and 57.66%, 76.19%, and 54.00% vs. 25.39%, 39.51%, and 32.30% 35.31%, and 34.74%, P<0.05). The mean BMI, systolic blood pressure (SBP), diastolic blood pressure (DBP), and FPG and TG levels, baPWV in the abnormal CVHI group were higher than those in the normal CVHI group, and height was lower the abnormal CVHI group than that in the normal group ( P<0.05). The correlation analysis showed that height ( r=0.309) was positively correlated with CVHI integral and SBP ( r=-0.239), DBP ( r=-0.189), and baPWV ( r=-0.184) were negatively correlated with CVHI integral ( P<0.001). The higher the height, the higher the CVHI and the lower the risk of stroke, and the higher the SBP, DBP, and baPWV, the lower the CVHI score and the higher the risk of stroke. The factor logistic regression analysis showed that old age ( OR, 1.992; 95% CI, 1.405-2.825); female sex ( OR, 2.240; 95% CI, 1.750-2.866); history of hypertension ( OR, 3.363; 95% CI, 1.665-6.791), menopause ( OR, 1.384; 95% CI, 1.016-1.885), and high SBP ( OR, 1.031; 95% CI, 1.019-1.044), BMI ( OR, 1.091; 95% CI, 1.048-1.135), FPG level ( OR, 1.169; 95% CI, 1.017-1.344), and baPWV ( OR, 1.002; 95% CI, 1.001-1.002) were risk factors for abnormal CVHI, and increased height ( OR, 0.936; 95% CI 0.920-0.952) was the protective factor. Conclusion:Individuals in ethnic minorities frequently have abnormal CVHI. The main risk factors of CVHI are the elderly, female, history of hypertension, menopause, systolic blood pressure, body mass index, fasting blood glucose and baPWV. It is necessary to strengthen the health management of ethnic minority gathering places, controling body weight, regularly monitoring of blood pressure and blood glucose and lipid levels, and examing cerebral vascular hemodynamics.

Prevalence, awareness, treatment and control of hypertension in elderly residents in Hebei province / 中华流行病学杂志

Objective@#To understand the prevalence, awareness, treatment and control of hypertension in elderly residents in Hebei province.@*Methods@#Elderly residents aged ≥60 were selected though multistage clustering sampling during August to December, 2015. Design based methods were adopted to analyze the prevalence, awareness, treatment and control of hypertension in local residents of Hebei.@*Results@#A total of 2 501 elderly adults were included in the study. The overall prevalence rate of hypertension was 63.7% (58.3% in males, 69.0% in females), the awareness rate of hypertension was 42.4% (35.7% in males, 48.0% in females), the treatment rate was 38.2% (32.0% in males, 43.3% in females), and the control rate was 9.0% (8.1% in males, 9.7% in females). The results of multivariate analysis indicated that age, sex, degree of education, BMI and central obesity were the factors influencing the prevalence, awareness, treatment and control of hypertension in elderly population in Hebei.@*Conclusions@#The prevalence of hypertension was high, but the rates of awareness, treatment and control of hypertension were low in elderly residents in Hebei. The influences of overweight, obesity and central obesity on hypertension were significant in the elderly. It is necessary to standard the management of hypertension and reduce the risk factors for hypertension in elderly population to improve the control of hypertension.

Integrating channel selection and feature selection in a real time epileptic seizure detection system.

Automated real time seizure detection is difficult since detection sensitivity, false detection rate and seizure onset detection latency need to be considered simultaneously. Traditional pattern recognition and classification system usually suffers huge performance variation due to patient specificity and algorithm inadaptability. To address this problem, we propose a two stage seizure detection system which integrates off-line channel selection and feature selection before the construction of the final model. This system allows patient specific channel selection and flexible feature set extraction for individual patient, so that a more compact and reliable model could be developed. Employing the two stage scheme not only decreases hardware cost in signal readout and feature extraction, but also remarkably improves detection sensitivity and reduces false detections. Mutual information based method is used for channel selection, while Random Forests and nonlinear SVM-RFE are evaluated for feature selection. The whole system achieves a mean detection latency of 6 seconds and a false detection rate of 0.356 per hour. Based on the test dataset, the sensitivity is found to 74.2% by sample or 98.4% by record with only two detection misses. Our design is also hardware-friendly, which could be implemented as a single chip closed loop neural modulation system.

Preparation, characterization and antioxidation activity in vitro of quercetin loaded chitosan nanoparticles / 中国生化药物杂志

Objective To prepare quercetin ( QUE) loaded chitosan nanoparticles ( CS-NPs), evaluate its physicochemical properties and antioxidation activity in vitro.Methods Quercetin chitosan nanoparticles were prepared by ionic crosslinking method and self-assembly method.The preparation method was optimized using entrapment efficiency (EE), drug loading (DL) and size as indexes.The best formulation and preparation conditions were optimized by orthogonal test based on single-factor test, evaluation indicator as particle size and EE.The physicochemical properties of the obtained QUE-CS-NPs were characterized by the following methods: the transmission electron microscope (TEM), dynamic light scattering (DLS) analysis for morphology, size distribution and Zeta potential.In vitro release behavior in 0.5% SDS solution was evaluated by dialysis tube method.In vitro antioxidant activity assays were performed by evaluating the abilities of the microspheres for hydroxide radicals and superoxide anions .Results TEM results revealed QUE-CS-NPs with round and uniform.Particle-size analysis showed that the diameters and Zeta potential of the QUE-CS-NPs were (282.9 ±20) nm and (30.5 ±2) mV, with uniform distribution (polydispersity below 0.185).DL and EE of QUE-CS-NPs were (8.81 ±0.65) %and (80.02 ±1.04) %, respectively.QUE-CS-NPs showed extended administration times with 66.2% cumulative release within 72 h.QUE-CS-NPs showed pronounced antioxidant activity and a concentration dependent, even more substantial than that of pure QUE.Conclusion QUE-CS-NPs show a good size, sustain release effect and pronounce antioxidant activity.

Effect Comparison of Omeprazole and Pantoprazole in the Treatment of Patients with Peptic Ulcer Bleeding / 中国药师

Objective:To compare the efficacy and adverse reactions of omeprazole and pantoprazole in the treatment of patients with peptic ulcer bleeding. Methods: Totally 362 cases of peptic ulcer bleeding were randomly divided into the control group and the observation group with 181 ones in each. The control group was treated by omeprazole 40mg in 0. 9% sodium chloride injection 100ml, ivd, bid, and the observation group was given pantoprazole 80mg in 0. 9% sodium chloride injection 100ml, ivd, bid. The treatment course was 3-6 days. The times of vomiting and melena, bleeding situation and bleeding stopping time in the two groups were observed and recorded, and the clinical efficacy, adverse drug reactions during the treatment and the expense of the two groups were also compared. Results:The bleeding amount on the first and third day in the observation group was significantly lower than that in the control group (P 0. 05). The average daily cost of the observation group was significantly lower than that of the control group (P 0. 05). Conclusion:The efficacy of omeprazole and pantoprazole in the treatment of peptic ulcer bleeding was similar with high security. However, pantoprazole may reduce the times of vomiting and melena, shorten the bleeding time and decrease the treatment cost.

Construction,prokaryotic expression and purification of FimH1-156 fusion protein / 重庆医学

Objective To construct and express a prokaryotic expression vector carrying the gene of FimH 1-156 that comprises human lysosome membrane protein 2 P41-49 gene ,and to express and purify the fusion protein .Methods FimH1-156 gene was cloned from plasmid pPKL241 by PCR ,and inserted into vector pET-28a(+ ) to obtain prokaryotic expression plasmid pET-28a-FimH . After transforming Escherichia coli BL21(DE3) with pET-28a-FimH ,fusion protein FimH1-156 was expressed under induction .The target fusion protein was purified ,and its antigenicity was detected through Western blot .Results The expressed recombinant pro-tein was purified ,the expression of protein was the highest when IPTG was 1 mmol/L and 4h after induction ,it was expressed as include body form ,and the expressed protein was identified to react with monoclonal antibodies 6 × His by Western blotting .Conclu-sion We cloned FimH1-156 fusion protein expressed genes successfully ,constructed prokaryotic expression vector ,and won the in-clusion body purification of FimH1-156 fusion protein .

Progress of Survivin gene in cancer / 肿瘤研究与临床

Survivin is an apoptosis inhibitor and plays an important role in the development and progression of cancer.It is undetectable in normal adult tissues,but has been showed to be overexpressed in various cancers and has been regarded as a marker of malignancy.And the promoter polymorphism of Survivin gene is closely related to risk of cancer and gene susceptibility,this might provide clues for further elucidation of the correlation of risk of cancer and genetic polymorphism,and for diagnosis,prevention and screening of cancer gene.

Application of intraoperative cholangiography in laparoscopic cholecystectomy / 临床外科杂志

Objective To investigate the value of intraoperative cholangiography in laparoscopic cholecystectomy(LC). Method Intraoperative cholangiography was attempted in 1226 patients, and was successful in 1180(95.5%). Result Stones were found in the common bile duct in 78 patients, bile duct injury in seven and accessory hepatic duct in two were found.Conclusion Intraoperative cholangiography is a simply and useful procedure in providing clear imaging of biliary system, improving the success rate of LC and reducing the chance of bile duct injury.