Objective To analyze the occupational health literacy (OHL) level and its influencing factors of workers in non-metallic mineral product industry in Yunfu City. Methods A total of 947 frontline workers from 24 non-metallic mineral products enterprises in Yunfu City were selected as the research subjects using the stratified random sampling method. The OHL level of the workers were assessed using the Occupational Health Literacy Questionnaire of National Key Populations. Results The overall OHL level of the research subjects was 58.3% (552/947). The OHL levels across four dimensions, from highest to lowest, were basic knowledge of occupational health protection (94.7%), healthy work practices and behaviors (81.8%), legal knowledge of occupational health (65.5%), and basic skills of occupational health protection (25.9%). The results of binary logistic regression analysis showed that workers with 2.0-<10.0 years and ≥10 years of work experience had higher OHL levels than those with <2.0 years of work experience (all P<0.01). Workers with a high school education or above had higher OHL levels than those with a junior high school education or below (all P<0.01). Workers in large- and medium-sized enterprises had higher OHL levels than those in small and micro-sized enterprises (both P<0.01). Conclusion The OHL levels of workers in Yunfu City's non-metallic mineral products industry can be further improved, particularly the occupational health protection skills and related legal knowledge. Workers with short seniority, low educational level, and in small and micro enterprises should be the key groups for improving OHL levels.

Objective To investigate the changes of serum cardiac-specific troponin I (cTnI) level in patients after lung transplantation. Methods Clinical data of patients undergoing lung transplantation in our hospital from December 2016 to December 2022 were retrospectively analyzed. The relationship between postoperative serum cTnI level and clinical characteristics were explored. Results Finally 20 patients were collected, including 15 males and 5 females with an average age of (51.65±12.79) years. The serum cTnI level was significantly increased after lung transplantation. The serum cTnI reached the highest level on the first day after transplantation, and significantly decreased from the third day after transplantation. The serum cTnI levels in patients with obstructive pulmonary disease and bilateral lung transplantation were significantly higher than those in patients with restrictive pulmonary disease and unilateral lung transplantation on the day after surgery and on the first day after transplantation. Conclusion Transient myocardial injury can occur after lung transplantation, which is characterized by an abnormal increase in serum cTnI level.

Objective:To analyze the clinical characteristics of eosinophilic lung diseases(ELD) in children to enhance pediatricians′ understanding of ELD.Methods:In this retrospective cross-sectional study, a total of 149 children with ELD were recruited from Beijing Children′s Hospital, Capital Medical University between April 1, 2007 and March 31, 2022.Chi-square test, Fisher′s exact test, Mann-Whitney U test and Kruskal-Wallis test were used to analyze data and conclude clinical characteristics.Spearman correlation was used to analyze the correlation between eosinophils in peripheral blood and bronchoalveolar lavage fluid.Chi-square test and Kappa consistency test were used to compare the differences and consistency in diagnostic results between bronchoalveolar lavage fluid or lung biopsy and eosinophil elevation with chest imaging abnormalities. Results:(1)The isolated lung involvement was mostly caused by allergic bronchopulmonary aspergillosis(9 patients), and other system involvement by idiopathic hypereosinophilic syndrome(89 patients).(2)The main respiratory manifestations included coughing(90 cases, 60.4%) and expectoration(41 cases, 27.5%), while 23.5%(35 cases) of patients had no respiratory symptoms; 50.3% had digestive system involvement, and 40.9% had skin involvement.These were the two most commonly affected organs.(3)Spearman correlation was performed between eosinophils in peripheral blood and bronchoalveolar lavage fluid( r=0.3, P<0.05).Chi-square test was performed to compare ELD diagnosed by bronchoalveolar lavage fluid or lung biopsy with peripheral blood eosinophilia accompanied by abnormal chest imaging( P<0.05).Kappa consistency test(Kappa<0.2) showed poor consistency between the two diagnostic methods. Conclusions:ELD are present in children, and multiple etiologies may be pathogenic.Among children with ELD, the isolated lung involvement is mainly caused by allergic bronchopulmonary aspergillosis.The digestive system and skin are the most commonly affected organs, except for lungs.The correlation between eosinophil levels in peripheral blood and bronchoalveolar lavage fluid is poor.

OBJECTIVE: To explore the status of occupational stress and its influencing factors in medical radiation workers using two occupational stress measurement models. METHODS: A total of 632 medical radiation workers from Guangdong Province were selected as the study subjects using cluster sampling method. Chinese version of Job Content Questionnaire and Effort Reward Imbalance Questionnaire were used to assess occupational stress with job demand-control( JDC) and effort-reward imbalance( ERI) models. RESULTS: The rate of occupational stress in the study subjects was 43. 8%( 277/632) using the JDC model. The rate of occupational stress was 38. 6%( 244/632) using the ERI model. The multivariate logistic analysis results showed that the risk of JDC occupational stress was higher in workers with more than 8 hours work daily and more than 40 hours weekly( P < 0. 01). The risk of ERI occupational stress was higher in the workers with age of30. 0-40. 0,public medical institutions,daily work more than 8 hours and weekly work more than 40 hours( P < 0. 01).CONCLUSION: Under the two theoretical models,medical radiation workers have a certain degree of occupational stress. The age,medical institution type,daily and weekly work hours are the main factors affecting occupational stress.

OBJECTIVE: To explore the effect of occupational stress on the level of salivary cortisol in electronic manufacturing workers. METHODS: Two hundreds and forty workers were selected as study subjects by cluster sampling method. The Job Content Questionnaire and the Effort-Reward Imbalance Questionnaire were used to investigate the level of occupational stress in the job demand control( JDC) model and effort reward Imbalance( ERI) model. The saliva samples of workers were taken to determine the cortisol levels. RESULTS: Among the 240 workers,172( 71. 7%) showed occupational stress based on JDC model and 59( 24. 6%) showed occupational stress based on ERI model. The level of salivary cortisol of the workers in the high occupational stress group of JDC and ERI model were higher than those of the low occupational stress group( P < 0. 01). The level of salivary cortisol was positively correlated with the score of job demands,external costs and internal inputs( P < 0. 01),and it was negatively correlated with score of return dimension( P < 0. 01). In the occupational stress of JDC model,job requirements and autonomy entered the regression equation( P < 0. 05),that explained the 14. 0% of the total variation of the equation. In the occupational stress of ERI model,job pay and return dimension entered the regression equation( P < 0. 05),that explained the 13. 0% of the total variation of the equation. CONCLUSION: There is a correlation between occupational stress and level of salivary cortisol in the electronic manufacturing workers. Salivary cortisol can be used as an indicator of occupational stress.

OBJECTIVE: To investigate the current status and influencing factors of occupational stress in female workers of labor-intensive enterprises. METHODS: Totally 910 female workers from 5 labor-intensive enterprises in Guangdong Province was selected as the research subjects by random cluster sampling method. A questionnaire survey on occupational stress was conducted using the Occupational Stress Inventory-Revised Edition. RESULTS: Among the 910 female workers,14. 9%( 136/910) showed medium or higher scale on occupational role level,20. 1%( 183/910) showed medium or higher scale on occupational stress level,and 21. 4%( 195/910) showed medium or higher scale on personal resources lack. Multivariate logistic regression analysis indicated that the risk of occupational stress was high in single female workers and/or those exposed to occupational hazards( P < 0. 01). The higher the occupational role level,the higher risk of occupational stress( P < 0. 01). The less personal resources,the higher risk of occupational stress( P < 0. 01).CONCLUSION: Some female workers in labor-intensive enterprises showed medium or higher occupational stress level. The main influencing factors of occupational stress are marital status,exposure to occupational hazards,occupational role and personal resources.

Objective To investigate the value of spectral CT-based quantitative analysis in the differential diagnosis of liver cancer and liver abscess.Methods A total of 70 patients with space-occupying lesions in the liver (45 with liver cancer and 25 with liver abscess) underwent spectral CT scans to obtain spectral images in the arterial phase and portal venous phase.The solid constituents of lesions and the iodine and water concentrations in necrotic or cystic parts of lesions,normal hepatic tissue,and abdominal aorta in the arterial phase and portal venous phase were measured,and the normalized iodine concentration (NIC) and lesion-to-normal hepatic tissue ratio (LNR) of iodine concentration were calculated.The two samples t-test and the receiver operating characteristic (ROC) curve analysis were performed for the quantitative indices above.Results The patients with liver cancer had higher NIC and LNR in solid constituents in the arterial phase than those with liver abscess (NIC:0.15±0.06 mg/ml vs 0.14±0.02 mg/ml,P ＞ 0.05;LNR:2.78±0.65 vs 1.45±0.88,P ＜ 0.001).The patients with liver abscess had significantly higher NIC and LNR in solid constituents in the portal venous phase than those with liver cancer (NIC:0.65±0.08 mg/ml vs 0.52±0.08 mg/ml,P ≤ 0.001;LNR:1.22±0.23 vs 0.95±0.15,P ≤ 0.001).There were no significant differences in NIC in the arterial phase or NIC and LNR in the portal venous phase in necrotic or cystic parts of lesions between the patients with liver cancer and liver abscess (P ＞ 0.05).The optimal quantitative value for the differential diagnosis of liver cancer and liver abscess was LNR in arterial phase,and the cut-off value of 1.53 had a sensitivity of 100％ and a specificity of 92％.Conclusion Quantitative iodine concentration analysis in spectral CT imaging has a certain value in the differential diagnosis of liver cancer and liver abscess and can improve the accuracy of diagnosis.

Objective To explore the effectiveness and safety of tiotropium bromide inhalation agent with tulobuterol patch in the treatment of C and D level of COPD in stable period .Methods According to the digital table,255 cases of C and D level in patients with stable COPD were randomly divided into the study group and control group,the patients in study group received inhalation of tiotropium bromide dry powder 18μg/times,one time every day,and give tulobuterol patch(2mg/paste),one time every day.The control group received inhalation of tiotropium bromide dry powder 18μg/times,one time every day.The changes of lung function were observed before and after treatment,the clinical symptom score and inhaled short acting beta 2 agonists used,6min walk test,times of acute exacerbation condition.Results The patients in the two groups after treatment ,pulmonary function ,clinical symptoms score,inhaled short acting beta 2 agonists used,6min walk test,times of acute exacerbation compared with statistical significance(all P<0.05).Subgroup analysis in study group ,emphysema phenotype visible persistent effect ,chronic bronchitis phenotype ,ACOS phenotype early effective treatment ,decreased efficacy after half a year .The adverse reac-tion of two groups of drugs were respectively 19.7%and 21.0%,there was no significant difference in the incidence of adverse reaction between the two groups (χ2 =0.071,P>0.05).Conclusion Tiotropium bromide inhalation agent with tulobuterol patch can improve clinical symptoms and pulmonary function in patients with C and D level part of the stable phase of COPD .

Objective In order to prevent the infection of Acinetobacter baumannii and use antibiotics rationally,the clinical infection and drug resistant data of multi-drug resistance Acinetobacter baumannii (MRAB)detected in intensive care unit (ICU)of Beijing Friendship Hospital from 2011 to 2013were analyzed.Methods This study is a retrospective study.One hundred and eighty five strains of MRAB were collected from the patients in ICU from January 2011 to December 2013.Identificationand antibiotic susceptibility of strains were determined with Vitek-2 Compact automatic bacteria identification system.The annual infection rate of MRAB was counted.PCR was used to detect the resistance genes.The clinical features of the patients with MRAB were analyzed.The average age,acute physiology and chronic health evaluation (APACHE) Ⅱ score,duration in ICU and mortality ratio of the MRAB patients were compared with the patients without MRAB.Rank-sum test was used to analyze the average age,APACHE Ⅱ score and duration in ICU.Chi-squared test was used to analyze the mortality ratio and annual infection rate.Results The average age [(67 ± 17)vs (59-± 19) years old,Z =-5.365,P =0],APACHE Ⅱ score [(25.68±7.93) vs (17.62±8.39),Z=-14.821,P=0],duration in ICU [(27 ±29) vs (5 ±8) d,Z =-4.342,P =0] and mortality ratio [10.82％ (53/185) vs 28.65％ (147/1 359),x2 =45.92,P =0] of the patients infected by MRAB were significantly higher than those without the infection.The MRAB was found mostly in sputum and bronchial precipitates (83.78％,155/185).Though detection rate reduced yearly and there was a significant reduction in 2013 compared with 2011 [11.07％ (69/469) vs 8.37％ (52/621),x2 =8.755,P =0.003],the drug resistant rate was in high level and did not show any change in the 3 years.OXA-23 and OXA-51 were detected in all MRAB.Conclusions The main drug resistant mechanism of MRAB in ICU is related to OXA-23.More active methods of coutrol and prevention of MRAB should be used in elderly aud severely pneumonic patients.Intensive disinfection and isolation measures can decrease MRAB detection rate.Combined antibiotics should be used in patients with MRAB infection.

Objectives To investigate the outcomes of neonatals with abnormal hepatitis B virus (HBV) serological markers. Methods Twenty-eight neonatals who had abnormal HBV serological markers and whose mothers had positive HBsAg, HbeAg and HbcAb were studied. Among them, 21 neonatals who had positive HBsAg, HbeAg and HbcAb were included in vertical transmission group;7 neonatals who had positive HbeAg, HbcAb and negative HBsAg were included in suspicious group. The quantities of HBV serological markers were determined by time-resolved immunofluorometric assay (IFMA) and the level of HBV DNA were measured by fluorescence quantitative PCR (FQ-PCR). Results Serum HBeAg and HBsAg levels in suspi-cious group were lower than those in vertical transmission group (P<0.05). The results showed that HBeAg level (0.55 ± 0.19 PEIU/ml) three months after birth was lower than that (4.02 ± 2.00 PEIU/ml) 7 days after birth in suspicious group (P<0.05). Conclusions Early interference has positive effect in mothers and neonatls with abnormal HBV serological markers.