ABSTRACT
Objective@#To explore the application value of biochemical and immunological assembly line in emergency test by comparatively analyzing the changes in sample test process and turnaround time (TAT) in emergency test before and after installation of the assembly line.@*Methods@#A retrospective study was performed with the run data of the emergency biochemical and immunodetection project in Department of Clinical Laboratory in Tongji Hospital Affiliated to Tongji University from July to September in 2017 and from July to September in 2018. (1)The changes in sample circulation mode and test process were compared in emergency test before and after installation of the assembly line.(2)The changes in TAT of sample test and distribution of time interval in emergency laboratory report were statistically analyzed before and after installation.(3)The number of samples tested between instruments and occurrence of instrument failure were statistically compared before and after installation. (4)Biosafety risk assessment was performed on the sample test process before and after installation to analyze the effects of the assembly line installation on biosafety control in emergency test.@*Results@#(1) By applying the assembly line, the sample test process was well controlled and the workload for laboratorians was eased greatly through reduction of manual work.(2) Report TAT was remarkably shortened after installation compared to that before installation; the TAT of dry biochemistry and myocardial zymogram report in emergency test was shorted from 39 min and 48 min to 34 min and 42 min respectively, with a reduction of 12.82% an 12.50% compared to those before installation; the TAT of dry biochemistry and myocardial zymogram report in inpatient emergency was shorted from 37 min and 43 min to 29 min and 35 min respectively, with a reduction of 21.61% an 18.60% compared to those before installation; distribution of report TAT was comparatively analyzed, the percentage of reports in 0-30 min and 31-45 min increased remarkably compared to that before installation, the percentage of TAT of dry biochemistry report falling into 0-45 min increased to 74.58% and 85.66% after installation from 57.91% and 78.28% before installation, respectively in emergency and inpatient emergency. (3)For the model VITROS5600, the percentage of samples tested changed from 30.29% and 69.71% before installation to 47.63% and 52.37% after installation, respectively; for the model DXI800, the percentage of samples tested changed from 28.77% and 71.23% before installation to 53.49% and 46.51% after installation, respectively. After installation, there was a tendency of balance in the number of samples tested between instruments. Instrument failure was significantly reduced: for the model VITROS5600, the frequency of instrument failure decreased from 3.5 times a month/instrument before installation to 2 times a month/instrument after installation on average; for the model DXI800, the frequency of instrument failure decreased from 2.8 times a month/instrument before installation to 1.8 times a month/instrument after installation on average.(4) Installation of the assembly line lowered the risks biosafety events in sample test process in emergency test and the two risks of accidental contact with aerosol in sample tubes before detection and accidental contact with biological specimen due to overturning and spilling during detection were reduced from a high level before installation to a low level after installation.@*Conclusion@#In emergency test, biochemical and immunological assembly line is of certain value in process improvement, reduction of workload for laboratorians, improvement of work efficiency, TAT reduction and optimization, as well as control of biosafety conditions.
ABSTRACT
BACKGROUND: We report a case of extensor pollicis longus (EPL) tendon rupture caused by repetitive motions and awkward posture on hand and wrist joints. CASE PRESENTATION: A 47-year-old right-handed man who worked for 15 years in an assembly line at an automotive manufacturing company has been diagnosed with a complete tear of right EPL tendon. We investigated the patient's occupational history in detail and evaluated the tasks ergonomically through musculoskeletal risk factors survey and job strain index (JSI) using the 22 task-related videos recorded by the patient. Three out of the 12 tasks (25%) were identified as high-risk work on the hand and wrist in the musculoskeletal risk factors survey in 2016. Among the 22 tasks analyzed by JSI, 11 tasks (50%) were evaluated as probably hazardous. In addition, he used localized vibration tools in 19 (86.4%) out of 22 tasks. CONCLUSION: We concluded the patient's disease was probably caused by repetitive motion and improper posture of the hand and wrist, and the hand-arm vibration is a possible cause as well.
Subject(s)
Humans , Middle Aged , Hand , Occupational Diseases , Posture , Risk Factors , Rupture , Tears , Tendons , Vibration , Wrist , Wrist JointABSTRACT
OBJECTIVE: To analyze the association of depressive symptoms,occupational stress and psychological capital( Psy Cay) in employees working in an assembly-line of electronic manufacturing service industry( EMSI),and discuss the mediating effect of Psy Cap in occupational stress and depressive symptoms. METHODS: A total of 2269 employees who work in an assembly-line from 9 EMSI enterprises in Beijing City,Jiangsu and Guangdong Provinces were selected as study subjects by a cross-sectional survey method. The Patient Health Questionnaire,Effort-Reward Imbalance Scale and Psy Cap Questionnaire were used to investigate their depressive symptoms,occupational stress and Psy Cap. The hierarchical regression analysis was used to explore the effects of occupational stress and Psy Cap on depressive symptoms. The mediating role of Psy Cap was examined using asymptotic and resampling strategies. RESULTS: The detection rate of depressive symptoms was 26. 0%( 589/2 269),and the detection rate of effort-reward imbalance model occupational stress was 26. 6%( 603/2 269). The total score of depression symptoms was positively correlated with the scores of the occupational stress effort and over-commitment dimensions [Spearman correlation coefficient( rS) were 0. 22 and 0. 34,respectively,P < 0. 01),and negatively correlated with the scores of the occupational stress reward dimension and the total score of Psy Cay( rSwere-0. 37 and-0. 39,respectively,P < 0. 05). Psy Cap plays a partial mediating role between the dimensions of effort and reward of occupational stress and depressive symptoms,and the mediating effect percentage was14. 8% and 23. 7% respectively. CONCLUSION: The Psy Cap of employees of EMSI assembly-line plays a partial mediating effect in occupational stress effort,reward and depressive symptoms. Increased levels of Psy Cap will help alleviate depressive symptoms.
ABSTRACT
Objective@#To study the correlation of occupation musculoskeletal disease (OMD) and safety behavior in assembly line workers.@*Methods@#Selected assembly line workers of 3 manufacturing factory in Pacity as the objects of this study by judgement sampling. Questionnaires were used for messages collection including the general sociodemographic characteristic, OMD condition, occupational safety behaviors.@*Results@#This study shows that, 826 OMD workers were found that the annual prevalence was 38.03%. The scores of work posture, handling habits, health habit in OMD group was lower than non-OMD group (P<0.01) but personal protection behavior was higher than non-OMD group (P<0.01) . Test of binary logistic regression revealed that age, workage, work posture, handling habits were the factors of OMD (P<0.01) .@*Conclusion@#Safety behaviors were the potent factors of OMD that work posture and handling habits should be broadcast.
ABSTRACT
OBJECTIVE: To investigate the current situation of the quality of life and its related factors among assembly line workers in manufacturers of Zhongshan City. METHODS: By cluster sampling method,1 485 assembly line workers from five manufacturing enterprises of Zhongshan City were selected as study subjects. The quality of life was measured by SF-36 scale. RESULTS: The dimension scores of physical functioning,physical role,body pain,general health,vitality,and social function of 1 485 workers were higher than those of normal people in Sichuan and Hangzhou( P < 0. 01). The score of emotional function dimension were higher than those of normal people in Sichuan( P < 0. 01). But the dimension score of mental health was lower than those of the normal people of Sichuan and Hangzhou( P < 0. 01). The multiple linear regression analysis result indicated that the quality of life of assembly line workers was influenced by monthly income,night shift,occupational hazard protection device and regular physical exercise( P < 0. 05). CONCLUSION: The mental health score of assembly line workers in manufacturers was low. The overall score was influenced by employment status and physical exercise.
ABSTRACT
OBJECTIVES: To determine the relationship between stress Factors and work-related musculoskeletal symptoms of assembly line workers in the automobile industry. METHODS: A cross-sectional study was conducted in two Factories of automobile manufacturing companies where inappropriate posture and repetitive motions were required. The total number of subjects was 636, and consisted entirely of men. The Age, length of work duration, marital status, education level, smoking status, drinking status, sleeping time and stress scores were investigated according to subgroups of general characteristics. We divided the subjects into a Reference group and a Stress risk group to compare the frequency of the variables between them. The stress scores of the Positive symptom group were compared with the Symptom free group by the t-test. To measure the stress level, the PWI(Psychosocial Well being Index) which consists of 4 Factors, totaling 45 items, was used. A standardized self-reported questionnaire was used to assess the symptoms in workers. The criteria for positive symptoms were based on Operational Definition of Work-related Musculoskeletal Disorders of the NIOSH. RESULTS: 1) The subgroups of Age, Work duration, Marital status, Education level, Smoking status, Drinking status and Sleeping time revealed no differences in frequencies in musculoskeletal symptoms. 2) Higher PWI(p<0.05), Factor 3(p<0.05) and Factor 4(p<0.01) scores were observed in younger workers compared with older workers. 3) The workers who had work durations between 11-15 years showed higher PWI(p<0.01), Factor 2(p<0.01), Factor 3(p<0.01), and Factor 4(p<0.01), compared with other work duration subgroups. 4) Singles had higher Factor 4 scores(p<0.01). 5) The sleeping time of less than 6 hours a day expressed a higher PWI(p<0.01), Factor 2(p<0.05), and Factor 3(p<0.01), Factor 4(p<0.05). 6) There was no difference in the prevalence of musculoskeletal symptoms between the Reference group and Stress risk group. 7) The subjects who had Positive musculoskeletal symptoms showed a significant difference in Factor 2 scores compared with the Symptom free groups. 8) According to a univariate logistic regression analysis, Factor 2(OR: 1.02, 95% CI: 1.00-1.04, p-value: 0.0291) expressed significant but mild effects on the musculoskeletal symptoms and a multivariate logistic regression showed a statistically significant effect on musculoskeletal symptoms(OR:1.04, 95% CI: 1.01-1.07, p-value: 0.0170). CONCLUSION: Psychosocial stress scores were not higher in symptomatic subjects compared with those who had no symptoms. Sleeping longer showed a protective effect on symptoms but this was not statistically significant. There was no relationship between the stress scores and musculoskeletal symptoms in social performance and self-confidence, general well-being and vitality. Factor 2(Depression) was statistically significant though its effect was mild. Limited to this study, We could find partial relationship between psychosocial stress(Depression) and musculoskeletal symptoms. So it could therefore be suspected that ergonomic or other unknown factors may be more significant causes of musculoskeletal symptoms but we did not investigate these.
Subject(s)
Humans , Male , Automobiles , Cross-Sectional Studies , Depression , Drinking , Education , Logistic Models , Marital Status , Posture , Prevalence , Surveys and Questionnaires , Smoke , SmokingABSTRACT
This study involved the assessment of nephrolithiasis risk factors among thirty one (n=31) assembly line workers exposed to heat stress. Assembly line workers working in normal temperature were used as a comparison group. Subjects were matched according to age, body mass index, length of employment and diet. Workplace temperatures were determined using a room thermometer for both groups. Urinary parameters measured include pH, specific gravity, volume, calcium, sodium, phosphorus, uric acid and creatinine. Results showed that the mean levels of urine volume (345.52 +/- 294.88 mL, p0.005483), sodium (121.97 +/- 64.23 mmol/L, p0.006441), calcium (3.39 +/- 2.90 mmol/L, p0.03173), uric acid (3.24 +/- 2.83 mmol/L, p0.046342) and creatinine (11698.93+9091.19 umol/L, p0.035313) were significantly higher in the test group compared to the comparison group. However, there was no significant difference noted in the mean levels of urine pH, specific gravity and phosphorus. The increased risk of nephrolithiasis as assessed in the study was mainly attributed to dehydration during the workshift. Likewise, metabolic acidosis can also provide a possible explanation for the findings