نشریه طب کار
سال دوازدهم شماره 2 (پیاپی 39، تابستان 1399)

Shift work is one of the threatening factors on Health. The important effects of shift work can be noted chronic fatigue. This study aimed to determine the association between Shift Work and chronic Fatigue among Educational Hospital Nurses.

This cross-sectional study was carried out in Educational Hospital in Yazd. Using Stratified sampling technique, 200 Nurses were selected. The data was collected by using questionnaires of Demographic and chronic Fatigue. The data was analyzed using SPSS20 software and applying chi-square and Pearson correlation coefficients.

57 nurse’s man and 143 nurse’s women Participated in this study. There wasn’t a significant relation between the Gender, marital status, work experience and education level with chronic Fatigue. Because Between the age group with chronic fatigue there was a significant difference. Analysis of the results of this study showed that significant relation between Shift Work and chronic Fatigue.

Shift work can be affected on chronic fatigue that causes the difference in constant and non-constant shifts. So, chronic fatigue in people with constant shifts less than non-constant shifts.

 Painters are exposed to various chemical harmful agents such as lead particles in paints. Some studies have suggested a possible association of occupational exposure that may cause cardiovascular effects. Lead is absorbed through the body through the skin, skin, and respiratory tract and penetrates some tissues. Considering the importance of labor health in each countrychr('39')s development and progress, this study was conducted to determine the amount of lead in the blood of painters in Rafsanjan in 2019. 

 The present study is a cross-sectional study of the descriptive type conducted in 1397 on 77 painters of Rafsanjan city. Data collection was done in two stages, in the first stage, based on a checklist that included demographic information, and in the second stage by performing laboratory tests. Finally, by recording the data in SPSS software, quantitative data was reported as a "mean ± standard deviation" and qualitative information as a "number (percent)". 

 Of the 77 painter workers, the youngest is 21, and the oldest is 70 years old. A total of 20 people (26%) had a family history of heart attacks. The highest amount of lead in the blood of painters was reported to be 30.7 micrograms per deciliter, and the level of lead was most correlated with blood sugar. Sixty people (77.9%) painters used personal protective equipment. 49.4% of the studychr('39')s painters wore work clothes, and 28.6% used gloves while working. Lead levels are directly related to blood sugar, cholesterol, triglyceride, LDL, age, work experience, and blood sugar levels were most correlated with the level of lead in painterschr('39') blood. 

 This studychr('39')s findings show that due to the increase in the work experience of painters, their blood lead level has also increased, and the blood sugar level has had the highest correlation with the lead level in the painterschr('39') blood.

The irreparable consequences of human error in the health care sector have made patient safety an important principle in medical professions. The aim of the present study was to investigate the probability of human error in operating room personnel in the process of appendectomy operations.

This cross-sectional and descriptive study was performed to identify and evaluate the probability of human error in operating room personnel's tasks in the process of appendectomy in Shahid Sadoughi Hospital in Yazd. Initially, by interviewing personnel and studying the process and procedures of the work, the job duties of the personnel were analyzed using HTA method. Finally, the probability of error was calculated using SPAR-H method for different tasks.

The average human error probability for all tasks was 0.173. Also, the highest mean of error was related to anesthesiologist duties (0.23) and the least related to scrub duties (0.101).

The SPAR-H method can be used to analyze and quantify the probability of human error in the operating room. To reduce the likelihood of human error, we can reduce dependency by performing different tasks with different people and if possible with long time between them. Also, stress, complexity and procedures were identified as the most important factors affecting the probability of error.

Considering that job stress is one of the most commonly used areas related to health psychology in the workplace. Therefore the present study aimed The Effect Intervention Psychological- Based on Emotional Regulation on Reduction Job Stress among Nurses Working in Hospitals Kermanshah City.

This study was a quasi-experimental study with a pre-test and post-test design with a control group. The statistical population included all nurses working in Imam Reza hospital in Kermanshah city year 1398. The sample size consisted of 30 people selected by voluntary sampling and randomly divided into two groups (15 experimental & 15 control). At first, both groups were pre-tested by the Osipo Job Stress Questionnaire, and then the experimental group received eight sessions of 90 minutes of emotion regulation training. Finally, both groups responded again to the questionnaire. Data were analyzed using univariate covariance analysis by SPSS-23 software.

The results of the covariance analysis showed that the mean score of job stress components among the experimental group nurses was significantly decreased after the psychological intervention based on emotion regulation (P> 0.001).

According to these findings, it can be said that psychological intervention based on emotion regulation was effective in reducing nurseschr('39') job stress, so it is recommended that the relevant authorities pay attention to the role of these psychological interventions.

 Given the importance of adapting workerschr('39') physical and mental capabilities to their job needs, measuring their ability to work, maintaining, and upgrading, it has become an essential task. This study aimed to investigate WAI and its relationship with VO2max at one of the cement companies.

 This cross-sectional study was conducted among 130 employees of a cement company in Iran in 2018. For data collection, the WAI, Queenschr('39')s test for maximum oxygen consumption, and a questionnaire designed by researchers (socio-demographic and work-related factors) were used. SPSS 21 was used to analyze the data. 

 The results showed that the mean ± standard deviation of WAI in staff was 39.35 ± 4.64. Among the demographic and related variables, sports activity (P > 0.04) and sleep quality (P < 0.001), and work experience (P> 0.046) were significantly correlated with WAI. There was a significant positive correlation between the mean score of WAI and Vo2max (r = 0.21, p < 0.05). Regression modeling showed that Vo2max was the only significant predictor of WAI.

 According to the results of the study, to control and enhance the ability of the staff of the study, occupational intervention programs should focus on improving sleep quality and increased exercise. Also, considering the positive relationship of Vo2max to the WAI of the surveyed staff, it is recommended to select suitable employees in terms of aerobic capacity according to the workload of the job.

 Inhalation of dust particles is prone to chronic diseases, and regular exercise reduces the risk of cardiovascular disease and improves blood variables. The purpose of this study was to investigate the role of physical activity on blood factors, lipid profile, and liver enzymes in tile factory workers.

This is a cross-sectional study. 70 workers who were eligible to participate in the study were selected based on the sampling method available at the workplace. According to the Beck questionnaire, 15 people were included in each active and inactive groups. After 12 hours of workerchr('39')s last meal, 10 ml of venous blood was used to evaluate biochemical variables of Blood factors (RBC, Hematocrit, Hemoglobin, WBC), lipid profile (Cholesterol, Triglyceride). Liver enzyme (ALT, AST, ALP) tests of both groups were performed in the occupational medicine laboratory of Meybod city, and SPSS Ver.23 software was used for analysis.

 The results showed that red blood cells (p = 0.003) and hemoglobin (p = 0.034) in the active group were significantly higher than the inactive group. Also triglyceride (p = 0.025) and cholesterol (p = 0.042) of liver enzymes, (p = 0.011) ALT and AST (p = 0.047) were significantly lower.

 It seems that physical activity can have a positive effect; it can improve blood factors, liver enzymes, and fat profile in workers. According to the results, tile factory workers can achieve the desired blood factors with minimal physical activity.

 work-related accidents impose irreparable hurt on the national capital. It is necessary to take a series of preventive measures before the occurrence to preserve and protect the human force and reduce accidents. The current study aimed to check safety contradiction using the FMEA method and determine protection indicators of safety performance in the overhaul project. 

 This study is descriptive-analytical research and an interference method that accomplished 13 jobs in major repairs gas pipeline project. After determining jobs and entering them in the FMEA worksheet, the initial risk score was obtained in this investigation, and after corrective suggestions, the secondary risk priority score was calculated.

 The relationship between RPN1 and RPN2 was examined and determined a significant difference between risk priority score before and after corrective measure, and this indicates that these measures are effective (p<0.0005). Among various jobs and before taking corrective actions, the highest number of accidents was related to excavation activities with 15 accidents, which were reduced to 6 after taking corrective measures. Most days lost from work were related to driving job with 6020 days that reduced to 8 days after taking corrective actions; the highest rate of repeat accidents with 62.5 was related to détente activity reduced to 23.14 after taking corrective measures. The maximum intensity factor with 19444.44 was related to the driving activity reduced to 25.25 after taking corrective actions. The accident frequency - severity rate in driving activity with 15.84 was the most reduced to 0.28 after taking corrective measures. 

 Due to unacceptable risks and the high rate of accidents in the overhaul of the gas pipeline project, appropriate control measures can be used to reach an acceptable level of risk, which represents the usefulness of the FMEA method.

This study aims to determine the serum zinc level in patients with hearing loss and its relation with tinnitus. 

In this Cross-Sectional study, 110 patients older than 20 years old with Complaining of hearing loss and tinnitus were involved. Participating patients were first visited by an ear, nose, and throat specialist with a history and physical examination, and were assessed for standard hearing loss as well as the intensity and frequency of tinnitus by standard audiometric tests. Then, fasting blood samples were taken to check serum zinc levels.

The mean serum level was 85.32 ± 27 27.62, and the mean frequency of tinnitus was 4.94 ± 2.76, both of which had significant differences between different groups (P = 0.001). The mean intensity of tinnitus was 7.77 ± 4.56, and there was no significant difference between different groups (P = 0.677). Serum zinc level and tinnitus frequency were associated with a correlation coefficient of 0.205 (P = 0.032), and serum zinc level and tinnitus severity were associated with a correlation coefficient of 0.249 (P = 0.009).

According to the present study results, the positive effect of serum zinc levels on the severity and frequency of tinnitus has been determined so that with decreasing serum zinc levels, tinnitus occurs at lower frequencies.