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1.
Artigo em Chinês | MEDLINE | ID: mdl-34488268

RESUMO

Objective: To investigation the situation of occupational noise exposure and hearing loss among workers in automobile manufacturing enterprise during 2017-2019 in Wuhan. Methods: Workers in automobile manufacturing who underwent physical examination in Wuhan Hospital for the Prevention and Treatment of Occupational Diseases from 2017 to 2019 were included as subjects in the cross-sectional survey. Questionnaire survey, noise detection and pure tone threshold test were used. Excluding individuals with working time less than 3 years and information deficiency, 3 948 individuals were finally included in the study. Results: Among 3 948 workers, 128 workers had hearing loss and the rate of hearing loss was 3.24%, among which 101 workers had high-frequency hearing loss and 27 workers were diagnosed as occupational noise deafness. The prevalence of hearing loss among workers previously exposed to noise was significantly higher than that without prior exposure (12.10%, 0.96%, P<0.05) . The prevalence of hearing loss among workers with occupational noise exposure <80 dB (A) , 80~<85 dB (A) and ≥85 dB (A) was 1.83%, 2.69% and 5.09%, respectively. The prevalence of high frequency hearing loss was 1.60%, 2.05% and 3.71%, respectively. The prevalence of occupational noise deafness was 0.23%, 0.64% and 1.38%, respectively. The prevalence of hearing loss and high frequency hearing loss among workers exposed to different occupational noise was statistically significant (P<0.05) , while the prevalence of occupational noise deafness was not statistically significant (P>0.05) . There were statistically significant differences in the prevalence of hearing loss (2.88%, 4.45%) and occupational noise deafness (0.46%, 1.41%) between those who used protective equipment and those who did not (P<0.05) . Compared with workers exposed to occupational noise <80 dB (A) , workers exposed to occupational noise ≥85 dB (A) had A 3.16-fold increased risk of hearing loss (OR=3.16, 95%CI: 1.44~6.95, P<0.05) . Compared to workers using hearing protective equipment, the risk of hearing loss (OR=1.96, 95%CI: 1.25~3.06, P<0.05) and occupational noise deafness (OR=3.46, 95%CI: 1.51-7.96, P<0.05) significantly increased among those without using hearing protective equipment. Conclusion: The risk of hearing loss in automobile manufacturing workers is significantly associated with occupational noise exposure and the use of hearing protective equipment. Good hearing protection may reduce the risk of occupational noise-induced hearing loss and occupational noise deafness.


Assuntos
Perda Auditiva Provocada por Ruído , Ruído Ocupacional , Doenças Profissionais , Exposição Ocupacional , Automóveis , Estudos Transversais , Perda Auditiva Provocada por Ruído/epidemiologia , Perda Auditiva Provocada por Ruído/etiologia , Humanos , Ruído Ocupacional/efeitos adversos , Exposição Ocupacional/efeitos adversos
2.
Artigo em Chinês | MEDLINE | ID: mdl-34074077

RESUMO

Objective: To explore the changes of the auditory event-related potentials P300 and the Montreal Cognitive Assessment (MoCA) in the chronic mild lead poisoning in order to find out the impairment of cognitive function and intervene early. Methods: In February 2020, 50 patients with chronic mild lead poisoning in Wuhan Center for Prevention and Treatment of Occupational Diseases from June 2011 to June 2015 were selected as the case group, and 50 healthy people were selected as the control group. The changes of auditory event-related potential P300 and MOCA of the two groups were analyzed. Results: Compared with the control group, the latency of P300 of auditory event-related potential in the case group was prolonged and the amplitude was decreased (P<0.05) . Compared with the control group, the total score of MoCA in the case group was decreased, the mean score of language, abstract and delayed memory items decreased, and the differences were statistically significant (P<0.05) . Conclusion: The combination of auditory event-related potential P300 and MOCA is helpful to detect the early cognitive impairment in chronic lead poisoning population, and auditory event-related potential P300 is an objective and effective early detection method.


Assuntos
Potencial Evocado P300 , Chumbo , Adulto , Estudos de Casos e Controles , Doença Crônica , Cognição , Potenciais Evocados Auditivos , Humanos
4.
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi ; 38(12): 932-935, 2020 Dec 20.
Artigo em Chinês | MEDLINE | ID: mdl-33406560

RESUMO

Objective: To establish a headspace solid phase microextraction-gas chromatography method for determination of n-Butyl alcohol in urine. Methods: In October 2019, the n-butyl alcohol in urine was extracted with a polydimethylsiloxane/divinylbenzene (PDMS/DVB) solid-phase microextraction head. The conditions of salt amount, extraction temperature, extraction time and desorption time were optimized. The separation was performed on HP-5 (30 m×0.32 mm×0.25 µm) capillary column and detected with flame ionization detector. The quantification was based on the external standard curve. Results: The linear relationship of n-butyl alcohol in urine was good in the range of 0.04-3.00 mg/L, the correlation coefficient was 0.999, the detection limit of the method was 0.04 mg/L, the recovery was 77.4%-102.8%, the intra-run precision was 3.67%-8.11%, and the inter-assay precision was 4.94%-6.90%. Conclusion: The method has simple operation, high concentration efficiency and high sensitivity, and it is suitable for the determination of n-butyl alcohol in urine of occupational exposure to n-butyl alcohol.


Assuntos
1-Butanol , Microextração em Fase Sólida , Cromatografia Gasosa , Reprodutibilidade dos Testes , Temperatura
5.
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi ; 36(10): 764-767, 2018 Oct 20.
Artigo em Chinês | MEDLINE | ID: mdl-30541200

RESUMO

Objective: To investigate the prevalence and risk factors of neck and shoulder pain (NSP) among automobile manufacturing workers and to provide a theoretical basis for prevention of NSP. Methods: From November 5 to November 19, 2017, a total 446 works who had worked for more than one year were recruited from an automobile plant by cluster sampling method. Chi square test and unconditional logistic regression were used to exam the relation between influencing factors and NSP. Results: The annual prevalence rate of NSP was 34.8%. Multifactor regression analysis showed that age、work fatigue、department staff shortages、lifting heavy objects in awkward positions、neck flexion foreword and prolong sitting position work were the risk factors of NSP (OR=2.18, 95%CI:1.49~3.18; OR=4.52, 95%CI:1.27~16.00; OR=1.66, 95%CI:1.04~26.68; OR=2.10, 95%CI:1.16~3.81; OR=2.25, 95%CI:1.39~3.66; OR=2.42, 95%CI:1.06~5.56) and work break was the benefit factors of NSP (OR=0.58, 95%CI:0.36~0.94) . Conclusion: The annual prevalence rate of NSP among automobile manufacturing workers was high. Lifing heavy objects、awkward working positions and unreasonable work arrangement were the major risk factors of NSP, and work break can effectively reduce the risk of NSP. Effective ergonomic intervention should be carried out to prevent the occurrence of NSP.


Assuntos
Instalações Industriais e de Manufatura , Cervicalgia/epidemiologia , Doenças Profissionais/epidemiologia , Dor de Ombro/epidemiologia , Automóveis , Humanos , Prevalência , Fatores de Risco
6.
Artigo em Chinês | MEDLINE | ID: mdl-27866543

RESUMO

Objective: To investigate the influence of coke oven emissions on workers' blood pressure and electrocardiographic findings, and to provide a basis for the prevention and treatment of cardiovascular diseases. Methods: The concentration of coke oven emissions at the bottom, side, and top of coke ovens was determined in a coking plant. A total of 406 coke oven workers were enrolled as exposure group and 201 office staff members were enrolled as control group. Blood pressure and electrocardiographic findings were compared between the two groups, and the multivariate logistic regression analysis was performed to analyze the influencing factors for hypertension and abnormal electrocardiographic findings. Results: The concentration of coke oven emissions was the highest at the top of coke ovens, followed by the side and bottom of coke ovens, and there was a significant difference between the exposure group and the control group (P<0.01). The exposure group had significantly higher detection rates of hypertension, abnormal electrocardiographic findings, and abnormal chest X-ray findings than the control group (P<0.05). The logistic regression analysis showed that high concentration of coke oven emission and age were risk factors for hypertension and abnormal electrocardiographic findings (P<0.05). The workers exposed to high-concentration coke oven emissions were more likely to experience hypertension and abnormal electrocardiographic findings than those exposed to low-concentration coke oven emissions (OR=1.7 and 1.9). Conclusion: Besides lung injury, coke oven emissions also have adverse effects on the cardiovascular system. Therefore, more effective measures are needed to protect the health of coke oven workers.


Assuntos
Pressão Sanguínea , Coque , Humanos , Hipertensão , Exposição Ocupacional , Hidrocarbonetos Policíclicos Aromáticos , Fatores de Risco
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