Table of Content

15 July 2024, Volume 40 Issue 14

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Treatise

Evaluation of occupational hazards in a gas transmission company in Zhejiang Province

QU Eryue, GAO Junkai, JIA Yu, HOU Wensheng, PENG Jinhong

2024, 40(14):  1873-1877. 

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Objective To identify and determine the occupational hazards and their exposure level in the workplace of 6 gas transmission stations,1 compressor station and 1 maintenance team in a gas transmission company in Zhejiang Province. Mastering the present situation of occupational hazards and put forward corresponding countermeasures and improvement measures,preventing and controlling of occupational hazards,aiming to protect the health of workers. Methods Collecting the relevant data of the company from July to October 2022,carrying on the occupational health spot detection on the basis of the occupational health spot investigation,and evaluating the present situation of the occupational disease hazards of the company comprehensively by using the checklist method. Results The major occupational hazards of the station maintenance team include methane,carbon monoxide,nitrogen oxide,hydrogen sulfide,grinding wheel dust,noise and power frequency electric field. Collectted samples of harmful chemical factors：59 carbon monoxide,57 nitrogen oxides,21 hydrogen sulfide,and 2 grinding wheel dust. The pass rate of all samples was 100.0%. Detected physical harmful factors：279 noise levels,99 power frequency electric fields,and 7 illuminance levels. The qualified rate of the 40/8 h equivalent sound level and 8 h power frequency electric field intensity time weighted average detection results was 100.0%. However,the noise intensity in workplaces such as power generation rooms,compressor rooms,compressor air cooling areas,some station voltage regulating areas,and polishing operation positions exceeded 85 dB（A）,and the qualified rate of illuminance detection results was 71.4%. Upon inspection,it was found that the accident ventilation frequency of some explosion-proof axial flow fans in the power generation room was less than 12 times per hour. Conclusions Under the normal production condition of the station and yard,the detection results of occupational disease hazardous factors meet the limit requirements,the occupational disease hazardous protection effect and facilities meet the requirements of laws and regulations,and the occupational health management system is relatively sound,problems including no portable carbon monoxide gas detector,explosion-proof axial flow fan accident ventilation frequency less than 12 times/h in some stations,employees start the generator without earplugs,lighting lamp damage replacement is not timely,the occupational hazards warning signs are not perfect,and so on. It is suggested that the implementation and improvement of occupational health management system,the corresponding publicity and education should be strengthened.

Analysis on current status and correlation between occupational stress,occupational burnout and sleep quality among environmental sanitation workers in Beijing

GONG Jianmin, SONG Min, YANG Hui, MA Lin

2024, 40(14):  1878-1882. 

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Objective To investigate the current status of occupational stress,occupational burnout and sleep quality of environmental sanitation workers in Beijing,explore the correlation between occupational stress,occupational burnout and sleep quality of environmental sanitation workers. Methods A total of 730 environmental sanitation workers in Beijing were selected as the research objects by cross-sectional survey from March 2022 to April 2023. The general information questionnaire,China occupational stress response scale,general occupational burnout scale,and Pittsburgh sleep quality index scale were used for investigation,and the data were analyzed. Results The occupational stress score of environmental sanitation workers in Beijing was （43.04±12.35）points,the occupational burnout score was （56.74±11.34）points,and the sleep quality score was （8.43±2.60）points.64.7% of environmental sanitation workers had sleep disorders. The occupational stress of environmental sanitation workers was positively correlated with occupational burnout and sleep quality（r=0.527,0.445,both P<0.01）,while occupational burnout was positively correlated with sleep quality（r=0.392,P<0.01）. The occupational burnout played a partial mediating role between occupational stress and sleep quality among environmental sanitation workers,with a mediating effect value of 0.167,accounting for 26.09% of the total effect. Conclusion The sleep quality of environmental sanitation workers in Beijing is poor,occupational stress has a direct predictive effect on sleep quality,occupational burnout plays a partial positive mediating role in the relationship between occupational stress and sleep quality of environmental sanitation workers,and reducing occupational stress and burnout is beneficial for improving the sleep quality of environmental sanitation workers.

Mediating effect of emotional labor between sleep quality and job burnout of orthopedic nurses of grade-A tertiary hospitals in Guangzhou City

ZHNEG Pingping, CHEN Shaohua

2024, 40(14):  1883-1888. 

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Objective To explore the relationship between sleep quality,occupational burnout,and emotional labor among orthopedic nurses. Methods From October to December 2022,321 orthopedic nurses of grade-A tertiary hospitals in Guangzhou City were selected as the research objects by convenient sampling method. The general information questionnaire,Pittsburgh sleep quality index（PSQI）,Maslach burnout inventory（MBI） and emotional labor questionnaire（ELQ） were used for questionnaire survey,and the data were analyzed. Results A total of 312 orthopedic nurses were collected. The job burnout score of them was （78.86±18.05）points,and the prevalence of job burnout was 60.5%. The sleep quality score was （8.47±3.52）points,and 60.9% of nurses had sleep quality problems. The emotional labor score was （50.45±12.36）points. The correlation analysis showed that emotional labor,sleep quality and burnout were positively related（all P<0.01）. The structural equation model analysis showed that the sleep quality of orthopedic nurses had a positive prediction effect on job burnout（the direct effect was 0.204）,and emotional labor played a partial mediation role between job burnout and sleep quality,and the mediation effect accounted for 54% of the total effect. Conclusions The sleep quality,emotional labor and job burnout of orthopedic nurses are closely related. The sleep quality can directly affect the job burnout, and can indirectly affect the job burnout of orthopedic nurses through emotional labor. Therefore,the orthopedic nursing managers can improve the sleep quality and job burnout of nurses by adjusting emotional labor,so that orthopedic nurses can have a healthy physical and mental commitment to the nursing work of orthopedic patients|and promote the rapid recovery of patients.

Application of bioinformatics in screening natural drug ingredients for the treatment of silicosis from the perspective of ferroptosis

GAO Wei, JIAO Keying, HE Xinlei, HAO Han

2024, 40(14):  1889-1894. 

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Objective Using bioinformatics methods to screen natural drug ingredients for the treatment of silicosis from the perspective of ferroptosis,in order to provide new clues for the prevention and treatment of silicosis. Methods The gene expression data set related to silicosis was downloaded from the GEO database,and the data set was standardized by R software. The gene expression profile was analyzed using the limma package to obtain differentially expressed genes. The genes related to ferroptosis were collected through the FerrDb database. The intersection of ferroptosis-related genes and differentially expressed genes in silicosis was performed. The KEGG and GO enrichment analysis of the intersection genes was performed using the Webgestalt platform,and the PPI protein interaction network analysis of the intersection genes was performed using the STRING database and imported into the Cytoscape software to obtain the core target. The natural drugs targeting the core targets were searched by SymMap platform,and the effective components of natural drugs were found by TCMSP. Finally,molecular docking verification was carried out. Results Totally 31 intersection genes were obtained by intersection of ferroptosis-related genes and differentially expressed genes of silicosis. GO analysis showed that the intersection genes were involved in biological processes such as biological regulation,metabolic process and multicellular process. KEGG functional enrichment analysis showed that the differential genes were mainly enriched in ferroptosis,HIF-1 signaling pathway and AGE-RAGE signaling pathway in diabetic complications. Importing intersection genes into Cytoscape software resulted in five core targets. Quercetin and β-Sitosterol docking between the drug components of beta sitosterol and the core target showed that NOS2 and TGFBR1 had low binding energy and stable binding with these two drugs. Conclusion Quercetin and β-Sitosterol may be potential therapeutic drugs for silicosis,and NOS2 and TGFBR1 are the core therapeutic targets. The results of this study can provide new ideas for the development of drugs for the treatment of silicosis.

Determination of malachite green in aquatic products by boron doped molecularly imprinted polysiloxanemer modified electrochemical sensor

JU Saiqin, YANG Zhenxing, LANG Wanchao, QIN Minglin

2024, 40(14):  1895-1899. 

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Objective To establish a new method for the determination of malachite green（MG） in aquatic products using the electrochemical sensor that was constructed by modifying carbon paste electrode（CPE） using boron doped molecularly imprinted polysiloxanemer（BMIP）. Methods BMIP was synthesized using phenyltrimethoxysilane and methyltrimethoxysilane as functional monomers, MG as template molecule,meta aminophenylboronic acid as dopant,and tetraethoxysilane as crosslinking agent. BMIP was used to modify CPE and construct electrochemical sensor（BMIP-CPE） for detecting MG content in aquatic products. Results By optimizing the dosage of functional monomers,dopants,crosslinking agents,eluents,enrichment time and other experimental parameters,under optimal conditions,the linear range of MG in aquatic products was determined to be 0.2-60.0 μmol/L using differential pulse voltammetry,with a correlation coefficient of 0.999 2 and a detection limit of 0.075 μmol/L. In addition,the BMIP-CPE showed enough stability and good reproducibility. This method was applied to the detection of MG in commercially available aquatic products such as fish and shrimp,with an acceptable recoveries of 90.2% to 97.8%. The results were compared with high performance liquid chromatography,and the difference was not statistically significant（P>0.05）. Conclusion The BMIP modified electrochemical sensor is a simple and fast method for detecting MG in aquatic products,with good linear range,high specificity and accuracy,and is suitable for the determination of MG in aquatic products.

Determination of six alcohol compounds in water by headspace gas chromatography

MENG Xiangjuan, ZHANG Xiaomei, HU Yue, LIU Xiaodong

2024, 40(14):  1900-1903. 

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Objective To establish a headspace gas chromatography method for the determination of methanol,isopropyl alcohol,secondary butanol,isobutanol,n-butanol and isoamyl alcohol in industrial wastewater,surface water and drinking water. Methods The factors affecting the measurement,such as equilibrium temperature and equilibrium time,were discussed to determine the best detection conditions. Six alcohols were separated by headspace extraction,separated by DB-WAXetr capillary column,determined by hydrogen flame ionization detector,qualitative analysis was performed by retention time and quantitative analysis by external standard method. Results The linear range of the six compounds were 0-8.10 μg/mL,and the correlation coefficients were 0.999 3-0.999 9.The detection limits were 0.096 2-0.156 0 μg/mL.The accuracy and precision experiments were carried out with actual samples as the matrix,the accuracy ranged from 97.0% to 100.9%,intra-batch precision ranged from 0.72% to 3.80% and inter-batch precision ranged from 0.81% to 2.30%. Conclusion The method is simple,sensitive and accurate,and can accurately determine the contents of methanol,isopropyl alcohol,secondary butanol,isobutanol,n-butanol and isoamyl alcohol in industrial wastewater,surface water and drinking water.

Effect of occupational nickel exposure on malignant biological behavior of colorectal cancer SW620 cells：Based on the miR-101-5p-ESR1 pathway

WANG Xing, ZHANG Biao

2024, 40(14):  1904-1910. 

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Objective Based on microRNA-101-5p（miR-101-5p）-estrogen receptor（ESR1） pathway,to explore the effect of occupational nickel exposure on malignant biological behavior of colorectal cancer SW620 cells. Methods The colorectal cancer SW620 cell group,low-dose,medium-dose,and high-dose groups exposed to nickel（NiSO₄ final concentrations were 200.0,400.0,and 800.0 mg/mL） were set up in an environment of 37 ℃,5% CO₂,and 95% humidity.After culturing for 72 hours,the cell viability was measured by methyl thiazolyl tetrazolium（MTT） method,the number of single clones was measured by crystal violet staining,the cell apoptosis was detected by flow cytometry,the level of cell invasion and migration was measured by matrigel coating membrane and scratch test,and the levels of miR-101-5p and ESR1 were determined by real time fluorescence quantitative PCR and Western blot. Results Compared with the colorectal cancer SW620 cell group,the survival rate,colony formation number,membrane penetration number,migration distance,ESR1 mRNA protein expression level of low,medium and high dose NiSO₄ exposure groups[（1.39±0.22）vs（1.91±0.31）,（3.27±0.50）,（5.89±0.47） and （0.45±0.07） vs（0.88±0.11）,（1.25±0.13）,（1.45±0.18）] increased,while the apoptosis rate,miR-101-5p expression level[（3.58±0.36） vs（2.85±0.21）,（2.29±0.19）,（1.15±0.08）] decreased,and the differences were statistically significant（all P<0.05）.With the gradual increase of NiSO₄ exposure dose level,the survival rate,colony formation number,membrane penetration number,migration distance,ESR1 mRNA protein expression level of each dose group exposed to NiSO₄[（1.91±0.31） vs（3.27±0.50） vs（5.89±0.47）,（0.88±0.11） vs（1.25±0.13） vs（1.45±0.18）] gradually increased,the apoptosis rate,miR-101-5p expression level[（2.85±0.21） vs（2.29±0.19） vs（1.15±0.08）] gradually decreased,and the differences were statistically significant（all P<0.05）. Conclusion Nickel inhibits the expression of miR-101-5p in colorectal cancer cells and promotes the high expression of ESR1,thereby promoting the proliferation,invasion and migration of colorectal cancer cells,and inhibiting apoptosis.

Alkali absorption ion chromatography method for the determination of toxic chloride substances in the workplace

SHI Yan, ZANG Xufang, SHI Yanhua

2024, 40(14):  1911-1914. 

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Objective To explore a rapid and accurate method to detect toxic chloride in the workplace and reduce the harm of toxic chloride to laboratory personnel. Methods The mixed alkaline solution of 3.3 mmol/L sodium carbonate and 3.0 mmol/L sodium bicarbonate was used to absorb chlorine in the workplace,to improve the large bubble absorption tube collection method in GBZ/T 160.37-2004 "determination of chloride in the air of workplaces",and the ion chromatography method was used to replace the methyl orange spectrophotometric method for determination,and the air in the inorganic chemistry laboratory was used as the sample for comparison and verification of the two methods. Results The detection limit of the improved ion chromatography method was 0.05 mg/L,and the minimum detection concentration was 0.05 mg/m³,which was better than the detection limit of 0.2 mg/L and the minimum detection concentration of 0.2 mg/m³ in GBZ/T 160.37-2004 "determination of chloride in the air of workplaces". The environmental air samples from two workplaces were collected for six repeated determinations to verify the precision,and the relative standard deviations were 0.62% and 2.33%,respectively,which met the range requirements（0.7%-2.8%） of the relative standard deviation in the methyl orange spectrophotometric method in GBZ/T 160.37-2004 "determination of chloride in the air of workplaces". The accuracy comparison experiment between the control sample of four kinds of chlorinated substances and methyl orange spectrophotometry was carried out.The relative error range between the average value and the certified value of quality control standard sample was -1.48%-3.43%and -2.35%-2.88%,respectively. Conclusion Ion chromatography has high sensitivity in the detection of chloride,which can improve the efficiency of automated analysis and meet the requirements for the determination of toxic substances in the workplace.

Epidemiological characteristics analysis of foodborne diseases outbreaks in Nanning City from 2013 to 2022

LIU Chuangshan, WANG Shiqiong, SHI Xiangdong, ZHUO Futuan, WEI Yang, LU Yuning

2024, 40(14):  1915-1919. 

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Objective To analyze the epidemiological characteristics of foodborne diseases outbreaks in Nanning City from 2013 to 2022,and provide decision-making basis for the prevention and control of foodborne diseases outbreaks in Nanning City. Methods Descriptive epidemiological analysis was conducted on foodborne disease outbreaks reported in Nanning City from 2013 to 2022. Results A total of 169 outbreaks of foodborne diseases were reported in Nanning City,with a cumulative incidence of 1 251 cases,540 hospitalizations,and 8 deaths. The annual average number of reported outbreaks was 16.9,with an average of 7.4 reported cases per incident. Autumn was the season with the highest number of cases and hospitalizations. The proportion of hospitalized patients in county areas was higher than that in urban areas,and the incidence was mainly in families. The number of incidents caused by poisonous mushrooms was the highest,the number of cases caused by meat and meat products was the highest,the number of hospitalizations caused by tung oil/tung oil fruit was the highest,and the number of deaths caused by gelsemium elegans was the highest. The two main pathogenic pathways causing foodborne disease outbreaks were incidents related to pathogenic microorganisms caused by ingestion and misuse of toxic plants and their toxins,as well as poisoning,improper storage,and processing of poisonous mushrooms. Conclusion It is recommended to strengthen food safety education focused on identifying toxic plants and their toxins,toxic mushrooms,and various pathogenic microorganisms in rural households,as well as food storage and processing. The reporting mechanism for foodborne diseases should be strengthened and improved,and food safety education and supervision should be strengthened in key places such as restaurants and collective canteens. Early warnings should be issued in a timely manner during the peak season of foodborne disease outbreaks.

Impact of work-family gain and occupational resilience on occupational burnout among internal medicine nurses

LI Yanhong, LUO Xia, CHEN Yuting

2024, 40(14):  1919-1924. 

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Objective To understand the work-family gain,occupational resilience,and occupational burnout status of internal medicine nurses,and to analyze the mediating role of occupational resilience. Methods From April to May 2023,a convenience sampling method was used to select 212 internal medicine nurses from 5 grade-A tertiary hospitals in Qingdao as the survey subjects. The general situation scale,work family gain scale,occupational resilience scale,and occupational burnout scale were used for investigation and analysis. Results The scores of work family gain,occupational resilience,and occupational burnout for internal medicine nurses were （47.62±8.28）,（41.36±8.14）,and （61.68±12.36）points,respectively. There were statistically significant differences in work-family gain scores among internal medicine nurses of different ages,length of internal medicine service,educational level,professional title,marital status,monthly income,daily working hours,and whether they worked night shift（all P<0.05）. There were statistically significant differences in occupational resilience scores among internal medicine nurses of different ages,length of internal medicine service,educational level,professional title,monthly income,and daily working hours（all P<0.05）. There were statistically significant differences in job burnout scores among internal medicine nurses of different ages,length of internal medicine service,educational level,professional title,marital status,monthly income,daily working hours,and whether they worked night shift（all P<0.05）. The occupational burnout of internal medicine nurses was negatively correlated with work family gain and occupational burnout（r=-0.585,-0.618,both P<0.01）,while work family gain was positively correlated with occupational resilience（r=0.633,P<0.01）. The professional resilience of internal medicine nurses played a partial mediating role between work family gain and occupational burnout,with a mediating effect of -0.286,accounting for 47.51% of the total effect. Conclusion The work family gain and occupational resilience of internal medicine nurses in tertiary hospitals in Qingdao have a negative predictive effect on occupational burnout,and psychological resilience partially mediates the relationship between work family gain and occupational burnout. Improving the level of work family gain and occupational resilience is beneficial for reducing their occupational burnout.

A preliminary study on constructing a competency model for special operators in our army

ZHAO Houyu, YU Zeyuan, ZHANG Xinghui, YU Xuhua, LIU Wenwu, FANG Yiqun

2024, 40(14):  1925-1930. 

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Objective To construct a preliminary competency model for special operators in our army. Methods The study was conducted from April 2023 to July 2023,using a combination of quantitative and qualitative analysis. Firstly,based on relative literature analysis and O*NET job analysis research,a pool of indicators of the competency of special operators was initially established. The behavioural event interview（BEI） researched paradigm and the Delphi expert consulting was used to revise and improve,to constructa preliminary competency model for special operators in our military. Results Based on the results of behavioural event interview,the excellent group was better than the average group in 45 competency indicators（all P<0.05）.After two rounds of expert consultation,the experts' opinions on 40 competency traits were more concentrated and convergent,the mean importance scores of each index were more than 4,and the coefficients of variation were less than 0.25.The competency model for special operators containsfour primary indicators of personality,ability,attitude and military-related qualities. The personality dimension included 10 secondary indicators including emotional stability,honesty and reliability,etc. The ability dimension included 16 secondary indicators including ability of handling people,ability of planning and organization,etc. The attitude dimension included 10 secondary indicators including discipline and obedience to orders,military sense of honor,etc. The military-related qualities dimension included 4 secondary indicators including political and ideological qualities,special operations professional skills qualities,etc. Conclusion The competency model of special operations personnel constructed in this study can be used as a theoretical reference for the selection of special operators in our army in the future.

Study on relationship and mechanism between mindfulness and sleep quality of middle-aged and elderly people

LI Haihong, ZHANG Zhen, HAN Zhiqi, ZHOU Hang

2024, 40(14):  1931-1936. 

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Objective To investigate the relationship between mindfulness and sleep quality of middle-aged and elderly people as well as the roles of perceived stress and cognitive reappraisal. Methods From March to April of 2023,579 middle-aged and elderly people（age ≥45 years old） were enrolled and measured with Pittsburgh sleep quality index（PSQI）,short-form five facet mindfulness questionnaire（SF-FFMQ）,Chinese perceived stress scale（CPSS） and emotion regulation scale（ERS）,and the data were analyzed. Results The total PSQI score of middle-aged and elderly people was （11.1±5.1）points,the total score of SF-FFMQ was （62.9±7.4）points,the total score of CPSS was （37.1±7.4）points,and the total score of cognitive reappraisal was （24.0±4.8）points. The total score of SF-FFMQ in middle-aged and elderly people was negatively correlated with the total score of PSQI and the total score of CPSS（r=-0.25,-0.52,both P<0.01）. The total score of CPSS was positively correlated with the total score of PSQI（r=0.39,P<0.01）. The CPSS scores of middle-aged and elderly people played a mediating role between SF-FFMQ scores and PSQI scores,the mediating effect was -0.09,and 95%CI was -0.13--0.06. The interaction effects of SF-FFMQ score and cognitive reappraisal score were negatively related to CPSS score（β=-0.07,P<0.05） and PSQI score（β=-0.10,P<0.01）,the cognitive reappraisal score moderated the mesomeric effect of CPSS score between SF-FFMQ score and PSQI score,that is,when the cognitive reappraisal score was low（-1s）,the indirect effect of CPSS score was -0.06,and 95%CI was -0.11--0.03,but when the cognitive reappraisal score was high（+1s）,the indirect effect of CPSS score was -0.09,and 95%CI was 0.14--0.04. Conclusions The mindfulness level of middle-aged and elderly people can directly predict sleep quality,and can also indirectly predict sleep through perceived stress. The cognitive reappraisal not only mediates the relationship between mindfulness level and sleep quality,but also plays a regulatory role in the mediating effect of perceived stress. Improving mindfulness levels and cognitive reappraisal abilities,and reducing perceived stress are beneficial to promoting sleep quality of middle-aged and elderly people.

Analysis on characteristics of compassion satisfaction,compassion fatigue and their relationship with mindfulness among emergency nurses of Chongqing City

YUAN Yuan, WANG Yushu, SUN Wei

2024, 40(14):  1937-1940. 

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Objective To investigate the status and characteristics of compassion satisfaction and compassion fatigue and their relationship with mindfulness among emergency nurses of Chongqing City. Methods From October to November 2022,525 emergency nurses were collected from 22 hospitals in Chongqing City by the convenience sampling,the questionnaire investigation was conducted by the Chinese version of the professional quality of life scale and mindfulness attention awareness scale,and the data were analyzed. Results The score of compassion satisfaction of respondents was（29.41±9.15）points. The nurses with moderate burnout and secondary trauma accounted for 75.7% and 73.6%,respectively.The main manifestations of compassion fatigue were low career achievement,strong fatigue and high alert stress response.The emergency nurses with higher age,higher title,higher position and higher mindfulness reported higher compassion satisfaction and lower burnout,the opposite was true for nurses who were employed staff and work more night shifts each week（P<0.05）.The age,frequency of night shifts per week and mindfulness were the main influencing factors for compassion satisfaction and burnout（r=-0.165,0.221,both P<0.01）. Conclusion The empathy satisfaction and empathy fatigue among emergency nurses of Chongqing are at a moderate level,and it is urgent to develop a targeted mindfulness intervention program according to the characteristics of their compassion fatigue to further promote compassion satisfaction and alleviate compassion fatigue.

Analysis on mediating effect of spiritual climate between career calling and career success in nurses

ZHOU Zhiwei, XIA You, HU Jiangying, LUO Ruqiao, CAO Jiaru, JIAO Jia

2024, 40(14):  1941-1944. 

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Objective To explore the current situation of career calling and its influence on the sense of career success,analyze the role of spiritual climate in it. Methods From January to April 2023,226 nurses from a grade-A tertiary hospital in Changsha City were selected by the convenience sampling.The investigation was performed by the general data questionnaire,Chinese version of the spiritual climate scale,occupational call scale and Chinese version of career success scale,and the structural equation model was constructed for intermediary effect test. Results The scores of career calling,spiritual climate and career success were （3.44±0.77）,（3.29±0.91） and（2.98±0.75）points,respectively.The clinical nurses' mental climate,career calling and career success were positively correlated（all P<0.01）,and mental climate had a partial intermediary effect between career calling and career success,accounting for 19.10% of the total effect. Conclusions The sense of career success among nurses in a grade-A tertiary hospital in Changsha City is at a moderate level,the career calling can positively predict career success,and the spiritual climate plays a partial mediating role between them.The nursing managers should carry out the targeted intervention,cultivate nurses' professional identity,to enhance nurses' career calling and career success.

Analysis on sleep quality status and influencing factors of personnel in Disease Control and Prevention（CDC） in border counties（cities） in Yunnan Province

SHEN Xiulian, WANG Junying

2024, 40(14):  1945-1950. 

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Objective To analyze the sleep status and influencing factors of personnel in Disease Control and Prevention（CDC） in border counties（cities） in Yunnan Province. Methods A cluster random sampling method was used to select all staff of CDC in 18 border counties（cities） in Yunnan Province as survey subjects from June to July 2022. Questionnaire stars were used as carriers,and the Pittsburgh sleep quality index（PSQI） and social support rating scale（SSRS） were used to investigate the sleep status of the survey subjects,and compared and analyzed with the Chinese norm. Descriptive statistics,univariate analysis and multiple linear regression analysis methods were used to analyze the data. Results A total of 861 valid questionnaires were collected,with an effective rate of 92.2%. The average PSQI score of border CDC staff was （8.45±3.72）points,662 people（76.9%） were detected with sleep disorders,and the overall average score of social support was （40.76±9.51）points. The results of multivariate analysis showed that educational background,professional title,whether the individual is an only child,self-test health status,weekly overtime hours and social support were the factors affecting the sleep quality of CDC staff（all P<0.05）. Conclusion The sleep quality of CDC staff in the border counties（cities） is generally poor,so the unit should reasonably arrange rotation rest,provide rest places for CDC staff,hold regular health lectures,and carry out relaxation experience training appropriately,so as to improve the sleep quality and working state of CDC staff.

Analysis on current status and influencing factors of unhelpful beliefs among nurses with occupational low back pain in Hunan Province

XIE Xing, LU Shuzhen, CHEN Le, FU Jingjing, GAO Zhe, LI Guifei

2024, 40(14):  1950-1955. 

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Objective To investigate the current status of unhelpful beliefs among nurses with occupational low back pain and analyze its factors influencing. Methods A total of 223 nurses in two tertiary hospitals in Hunan Province were selected as research subjects from May to July 2023 by conveience sampling method. A general information questionnaire and a low back pain attitude questionnaire were used to investigate and analyze the data. Results The score of low back pain attitude among 223 nurses with occupational low back pain was（118.89±6.93）points. Whether to seek medical attention,the frequency of weekly exercise,the number of days of sick leave,work intensity,and the duration of low back pain were the influencing factors of unhelpful belief among nurses with occupational low back pain（all P<0.05）,which could explain 19.1% of the total variation. Conclusion Totally 223 occupational low back pain nurses generally had high levels of unhelpful beliefs. Nursing managers should strengthen evidence-based education training based on nurses' occupational characteristics and the unhelpful beliefs they hold,and develop targeted interventions to help nurses change their attitudes toward low back pain,reduce the level of unhelpful beliefs,and promote the healthy development of the nursing workforce.

Analysis on epidemic characteristics of infectious diseases in schools in Zhangjiagang City from 2008 to 2022

SHEN Yan, YAO Yinan, LIU Yuchang, JI Yan, LI Min, YAO Haiping

2024, 40(14):  1956-1959. 

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Objective To analyze the epidemic characteristics of infectious diseases in schools（including kindergartens） in Zhangjiagang City from 2008 to 2022,providing a reference basis for the prevention and control of infectious diseases in schools and aiming to reduce the incidence level. Methods The descriptive methods were adopted to analyze the infectious disease data of schools（including kindergartens） in Zhangjiagang City,which were reported in the Chinese disease prevention and control information system from 2008 to 2022. Results From 2008 to 2022,a total of 30 817 cases of 25 kinds of infectious diseases were reported in schools（including kindergartens） in Zhangjiagang City. The average annual incidence rate was 1 136.89/100 000,and the overall incidence rate showed an upward trend（χ²_trend=4 502.819,P<0.05）. The top five reported diseases with cumulative reported cases were hand-foot-and-mouth disease,varicella,influenza,mumps,and scarlet fever,accounting for 96.52% of the total reported cases 96.52%（29 745/30 817）. The occurrence of infectious diseases exhibited a distinct bimodal distribution,with the first peak observed in May to June and the second peak occurring from October to January of the following year. The incidence rate among males was higher than females,with a gender ratio of 1.34∶1. Among the reported cases,the highest number of cases was observed in the kindergarten group,which 15 544 cases were reported,accounting for 50.44%. The respiratory infectious diseases had the highest number of reported cases,with a total of 16 327 cases in nine different diseases,representing 52.98% of the overall reported cases. Conclusion The prevention and control of infectious diseases in schools of Zhangjiagang City should focus on kindergartens and primary schools,strengthen targeted prevention and control measures for common infectious diseases such as hand-foot-and-mouth disease,chicken pox,influenza,mumps and scarlet fever,improve vaccination coverage,explore and establish a data sharing mechanism,and achieve short-term early warning and prediction of infectious disease incidence trends in schools.

Analysis on insomnia subtypes and influencing factors among medical students

LIU Rongxun, GAO Yutong, SUN Lijun, WEI Yange, ZHU Lili

2024, 40(14):  1960-1964. 

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Objective To understand the potential categories of insomnia among medical students,analyze the factors associated with insomnia subtypes. Methods The convenience sampling method was used to select 4 425 medical students from a medical university in Xinxiang City from June to July 2022,and they were surveyed using the general information survey scale,insomnia severity index questionnaire,depression screening scale,and stress perception scale. The latent profile analysis was used to explore the subtypes of insomnia in the medical students. The mixed regression model was used to analyze predictive factors for each category. Results The medical students' insomnia severity score of M（P₂₅,P₇₅） was 1（0,4）points. There were 356（8.05%） people with insomnia,of which 319 were mild insomnia,33 were moderate insomnia,and 4 were severe insomnia. The subtypes were divided into four potential categories,namely "no insomnia group","unstable early wakefulness insomnia","early wakefulness stable trend insomnia",and "difficulty in falling asleep stable insomnia". The gender,grade,age,major,depression,and stress had a predictive effect on the different subtypes（all P<0.05）. Conclusion The insomnia subtypes of medical students can be divided into four potential categories with different influencing factors,and targeted interventions can be carried out according to the different subtypes and their influencing factors in the future to reduce the incidence of insomnia among medical students and promote their healthy physical and mental growth.

Influence of personality traits and professional attitude on self-directed learning ability of nursing students in Liaoning Province

ZHANG Lijuan, WANG Yanjie, LI Wei, DONG Bo, SONG Yanli, LIU Lei

2024, 40(14):  1965-1970. 

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Objective To understand the status of self-directed learning ability among nursing students in Liaoning Province,and to explore the influence of personality traits and professional attitudes on self-directed learning ability. Methods From January to April 2023,a cluster sampling method was used to select 517 nursing undergraduates from a medical college and university in Liaoning Province as the research subjects. A general social demographic questionnaire,a self-directed learning ability scale for nursing students,the Chinese big five personality questionnaire brief version and a professional attitude scale for nursing students were used for the questionnaire survey,and the data were analyzed. Results The total score of self-directed learning ability of nursing students was （74.08±14.30）points. There were statistically significant differences in the score of self-directed learning ability among nursing students with different grades,major choices,average college grades,family economic situation,whether they were student leaders or the only child（all P<0.05）. Self-directed learning ability was positively correlated with conscientiousness,agreeableness,openness,extraversion and professional attitude（all P<0.01）. Grade,family economic situation,the personality of conscientiousness,agreeableness,openness,extraversion,professional development,contribution to scientific knowledge and cooperation were the main influencing factors of nursing students' self-directed learning ability（all P<0.05）,which accounting for 72.7% of the variance. Conclusion The level of self-directed learning ability among nursing students is medium. Nursing educators should focus on cultivating the personality and professional attitude of nursing students,and pay attention to the different grades and family economic situation of nursing students to improve their self-directed learning abilities.

Visualization of nurses' work-related musculoskeletal disorders based on VOSviewer and CiteSpace knowledge graphs

QIN Wenting, ZENG Delan, WANG Weijia

2024, 40(14):  1971-1977. 

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Objective To visually analyze the research literature of work-related musculoskeletal diseases（WMSDs） of nurses in the past decade,and explore the current status,hotspot and trend of nurses' WMSDs at home and abroad. Methods The literature on nurses' WMSDs were retrieved from Web of Science and CNKI databases from 2013 to 2023. The visual analysis of publication volume,author,organization,and keywords was performed by using CiteSpace 6.2 R2 and VOSviewer 1.6.18 software. Results A total of 761 valid articles were obtained,and the overall publication volume showed a fluctuating growth trend. TIAN Suzhai and Holtermann Andreas team was the leading research team in the field of WMSDs for nurses both domestically and internationally in the past decade. Xinjiang Medical University and Denmark's National Work Environment Research Center were the research institutions with the highest number of publications in this field. The "ergonomics","influencing factors","back pain" and "occupational protection" were the hot words in the field in the past decade,and the depth and breadth of domestic research types,research methods and research dimensions in this field need to be further improved. Conclusion The research attention on nurses' WMSDs is gradually increasing,and the occupational health of nurses is constantly receiving attention. It is necessary to strengthen the cooperation and communication between research teams,broaden the research direction,mine Objective quantitative data in the future. Aiming to provide theoretical reference for the development of this field,help to take scientific measures to reduce the prevalence of WMSDs among nurses,and promote the occupational health of nurses.

Visual analysis of domestic AIDS discrimination research based on CNKI database

LIU Linfeng, ZHANG Wen, CAO Jun, WANG Hongyan, LIN Qin, RONG Xian

2024, 40(14):  1978-1983. 

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Objective To sort out and analyze the current situation,hot spots and trends of domestic research on AIDS discrimination,so as to provide a reference for carrying out targeted health education. Methods A comprehensive search of relevant research on AIDS discrimination from the establishment of the CNKI database to July 1,2023 was conducted,and the authors,research institutions,keywords,etc. included in the research literature were co presented and clustered through CiteSpace software. Results From 1999 to 2023,a total of 1 176 articles were obtained through document retrieval,and 542 articles were finally included for analysis. The number of articles published showed a fluctuating trend over time,with the highest number of articles published in 2009 at 45. The high-frequency keywords were "AIDS","discrimination","attitude","knowledge". The central top three were "AIDS","discrimination" and "social discrimination". Conclusions Discrimination against AIDS is widespread in China. Relevant scholars should further strengthen cooperation between different regions,institutions and teams to achieve cross regional and cross team research on AIDS discrimination,so as to improve the level of health education and reduce AIDS discrimination.

Investigation and Research

Analysis on participation rate and influencing factors of occupational health examination for community residents in Tangshan City

LU Yuzhen, ZHANG Wei, YUE Shuling, DONG Bin, ZHANG Xiaosong, GE Jieming

2024, 40(14):  1984-1989. 

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Objective To understand the participation rate and influencing factors of occupational health examinations among community residents in Tangshan City. Methods From March to September 2022,a multi-stage stratified random sampling method was used to select 1 890 permanent community residents in Tangshan City for a questionnaire survey,and the data were analyzed. Results The participation rate of occupational health examinations among community residents in Tangshan City was 69.4%. The logistic regression results showed that high education level,mental labor,good self-rated physical health status,harmonious family atmosphere,participation in health education activities,belief in the necessity of participating in occupational health examinations,and high electronic health literacy were all protective factors for community residents to participate in occupational health examinations（OR=1.793,1.692,8.075,4.649,1.683,1.391,2.321,all P<0.05）. The analysis results of the decision tree model showed that self-rated physical health,family atmosphere,participation in health education activities,educational level,occupation,cognition of occupational health examination,and e-health literacy were the influencing factors of community residents' participation in health examination（all P<0.05）. The sensitivity of the logistic regression model was 81.2%,the specificity was 77.0%,and the area under the curve was 0.872. The sensitivity of the decision tree model was 79.3%,the specificity was 79.8%,and the area under the curve was 0.865. There was no significant difference in the area under the curve between the two models（Z=1.640,P>0.05）. Conclusion There is still room for improvement in the occupational health examination rate of community residents in Tangshan City. Various measures can be taken to increase the participation rate of residents in occupational health examinations,such as participating in health education activities organized by the community,establishing correct health awareness,and improving electronic health literacy,in order to detect diseases early and better prevent them.

Analysis on results of occupational hazard monitoring in workplace in Da'an District of Zigong City from 2020 to 2022

XU Zhaoying, LIU Ke, CHEN Dechao

2024, 40(14):  1990-1993. 

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Objective To understand the status of the workplace occupational hazards in the key industries in Da'an District of Zigong City,provide reference basis for occupational disease prevention and control work of administrative regulatory departments. Methods The monitoring and on-site investigation of 68 enterprises were conducted according to the workplace occupational hazard monitoring project program in Da'an District of Zigong City from 2020 to 2022. Results The main occupational hazards present in the key industries in Da'an District of Zigong City were silica dust,welding fume,benzene,toluene,xylene,manganese and inorganic its compounds,and noise. Among the monitoring results of different harmful factors,the qualification rate of noise was the the lowest,which was 82.06%. The occupational health examination results showed that the abnormal rate of noise was the highest,which was 20.82%. Conclusions The current situation of occupational health management in key industries in Da'an District of Zigong City from 2020 to 2022 is severe,with high risk of occupational disease hazards. It is necessary to improve the supervision team for occupational disease prevention and control,seize key positions,and promote the implementation of the main responsibility for occupational disease prevention and control in enterprises.

Analysis on characteristics of influenza outbreaks in Hedong District of Tianjin City from 2013 to 2022

LU Da

2024, 40(14):  1994-1998. 

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Objective To analyze the epidemiological characteristics of influenza-like outbreaks in Hedong District of Tianjin City from 2013 to 2022,and provide a scientific basis for formulating influenza outbreak prevention and control strategies. Methods The relevant data of dealing with influenza outbreaks in Hedong District of Tianjin City from 2013 to 2022 were collected and data were analyzed. Results From 2013 to 2022,a total number of 15 influenza outbreaks were reported in Hedong District of Tianjin City,with a cumulative reported incidence of 372 cases and a cumulative reported attack rate of 2.09%.The outbreaks mainly occurred in winter and spring seasons（November,December and next March）. All of the outbreaks occurred in schools,involving 10 primary schools（66.67%） and 5 middle schools（33.33%）.There was no significant difference in attack rate between primary and secondary schools（χ²=3.524,P>0.05）.Among the cases,189 were male and 183 were female,with no significant difference in attack rate between males and females（χ²=0.102,P>0.05）.The virus strains appeared alternately,including 8 cases（53.33%） of type A（H3N2）,3 cases（20.00%） of type A and B mixed,1 case（6.67%） of type B（Victoria）,1 case（6.67%） of type B（Yamagata）,1 case（6.67%） of type B untyped,and 1 case not detected.After analyzing the influencing factors of the epidemic,the more the number of first reported cases,the more the final number of cases（t=8.883,P<0.05）,and the longer the interval time from the first case to the report time,the longer the duration of the outbreak（t=2.745,P<0.05）. Conclusions The influenza outbreaks in Hedong District mainly occurs in winter and spring,gathering places such as primary and secondary schools are places with a high incidence of influenza outbreaks. Therefore,health administrative departments and education departments should strengthen joint prevention and control mechanism to detect and respond to the outbreaks in a timely manner,reducing the duration of outbreaks and limiting the scale of the epidemic.

Investigation on occupational health management status of 208 packaging and printing enterprises in Dongguan City

HU Liecong, YE Lihe, CHEN Manlian, MA Zheng

2024, 40(14):  1998-2001. 

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Objective To investigate the current situation of occupational health management in packaging and printing industry in Dongguan City,provides a reference for health administration departments to carry out occupational health management and decision-making. Methods From March to December 2022,208 packaging and printing enterprises in Dongguan City were randomly selected as the object of this study to investigate and analyze the occupational health management level of employers,and the data were analyzed. Results Among 208 packaging and printing enterprises in Dongguan City,6 457 people were exposed to occupational hazard factors. Among them,711 workers（11.01%） were exposed to dust hazards,4 431 workers（68.62%） were exposed to chemical poisons,and 3 155 workers（48.86%） were exposed to noise hazards. There were statistically significant differences in the distribution of enterprise size,economic type and jurisdiction among workers exposure to dust,chemical toxicants and noise（all P<0.05）. Interms of occupational disease prevention facilities setting rate,protective equipment equipping rate and warning signs,the rate of small and micro enterprises was the lowest,the rate of foreign-related economic enterprises was higher than that of domestic enterprises,and the coastal area was significantly worse than other areas. Conclusion The occupational health management level of 208 packaging and printing enterprises in Dongguan City is low,and the occupational health management of small and micro,domestic economy and coastal area enterprises should be focused on,so as to improve the working environment of workers and protect the physical and mental health of workers.

Overview

Research progress on correlation between cognitive function,depressive symptoms and family function among elderly people in the community

LUO Yan, DONG Min, MO Beirong

2024, 40(14):  2002-2006. 

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The pace of global population aging is rapidly accelerating,which has had many impacts on society,economy and health. The decline in cognitive function of the elderly is crucial for the quality of life,family care and care burden in their later years. Depression symptoms are important influencing factors for the decline of cognitive function in the elderly,and changes in family structure caused by aging also dynamically affect their cognitive function. At the same time,the quality of family function affects the psychological health of the elderly and the occurrence and development of their own diseases,thereby affecting the cognitive function development of the elderly. This article reviews the current research status and interrelationships among cognitive function,depressive symptoms and family function among elderly people in the community.

Research progress on change fatigue of nurses

LIU Ruizhi, WU Yulan

2024, 40(14):  2007-2012. 

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Change fatigue refers to that when individuals face frequent changes,their ability and enthusiasm to deal with organizational change will be reduced,and continuous changes will lead to the exhaustion of individual resources,resulting in the phenomenon of change fatigue. Change fatigue has an important impact on the organizational commitment of nursing team,the mental health of nursing workers and the quality of patient care. Therefore,nurse change fatigue deserves extensive attention. Improving nurse change fatigue can effectively reduce the turnover rate of nurses,stabilize the nursing team,improve nurse job burnout and ensure the health of nurses. This article provides a review of nurse change fatigue,focusing on its concept,theoretical basis,assessment tools,current situation,influencing factors,outcome variables and suggestions and strategies for improving nurse change fatigue,so as to provide a reference for preventing and improving the level of nurse change fatigue.

Research progress on current situation and countermeasures of social anxiety among intern nursing students

DUAN Haizhen, HAN Shuai, DING Hailing

2024, 40(14):  2013-2016. 

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The prevalence of social anxiety has been increasing year by year due to its high prevalence and susceptibility to lifelong illness. In the field of clinical nursing,intern nursing students,as the main force of future nursing staff,have become a high-risk group for social anxiety due to the impact of changing learning environments,frequent exposure to different situations,and contact with different patients. This article reviews the concept,theoretical mechanism,assessment tools,and influencing factors of social anxiety among intern nursing students,and proposes targeted suggestions and strategies to explore effective coping strategies,alleviate the level of social anxiety among intern nursing students,and further promote the physical and mental health of nursing workers.