مجله مهندسی بهداشت حرفه ای
سال دهم شماره 3 (پاییز 1402)

The main index in resilience engineering is the management commitment index. In this study, a semi-quantitative risk assessment method based on the fuzzy hierarchical analysis method for management commitment index was implemented in evaluating the resilience level of two selected hospitals.

At first, evaluation tools including a 17-question hierarchical analysis questionnaire, a 4-question management commitment risk assessment form and a 2-question integrated management commitment risk assessment form with safety, health and environment were designed and their validity was determined. became. Then they were distributed in two hospitals of Al-Ghadir Tabriz and Khatam Al-Anbia Bandar Abbas affiliated to Faraja and were analyzed with relevant statistical methods.

In the evaluation of the fuzzy hierarchical analysis questionnaire, it was found that the level of resilience has increased from 15.25 in 2018 to 36.37 in 2019. Also, the level of social readiness, sharing and resiliency risk in the two investigated hospitals were 0.97, 0.17, 0.03, 0.96, 0.11 and 0.04, respectively. Also, the cumulative readiness value of management commitment based on safety, health and environment of these two hospitals was 0.81 and 0.74, respectively.

Based on these results, it is suggested that the selected hospitals focus on the effective parameters introduced in the evaluation tools of this study in order to increase the resilience level of these centers.

Indoor air pollutants are among the five most important environmental health risks. In recent years, concerns regarding indoor air in buildings have increased. In this review, studies conducted on portable air cleaners have been investigated.

After determining the keywords and conducting comprehensive searches in the internet databases, taking into account the entry and exit criteria, a complete review was carried out in order to obtain the latest findings and the general trend of the studies.

Portable air cleaner devices are very diverse and are divided based on the type of technology used. Many standards have been developed to evaluate the performance of these devices in different countries, but none of them cover all aspects of performance. The effectiveness of these devices on removing VOCs is between 20 and 80% depending on the type of technology and other influencing factors, and their effectiveness of removing suspended particles is between 70 and 95% on average. Furthermore, their efficiency in controlling Covid-19 is reported to be above 80% in cases where HEPA filters with grade 13 and above are used.

Devices equipped with the HEPA filtration process have been found to be very effective in controlling indoor suspended particles. The use of devices equipped with UVGI, plasma and ozone technologies should be accompanied by caution due to the production of dangerous by-products.

Bus drivers are exposed to harmful agents such as noise and vibration which may led to increasing the level of job stress among them. The aim of this study was to evaluation of job stress among urban bus drivers with respect to daily noise and vibration exposures.

This cross-sectional study carried out with participation of 103 urban bus drivers in Hamadan, 2020. The drivers' exposure to noise and vibration were measured using Svan 104 and Svan 106, respectively. The job stress was measured through Phillippe L. Rice questionnaire. Data analysis preformed using SPSS 24 and the significant levels of 0.05.

The mean exposure of drivers with noise was 79.50±3.51 dB. Their exposure with whole body vibrations (WBV) and hand-arm vibrations (HAV) were 0.62±0.16 and 0.44±0.06 m/s2, respectively. Most drivers (87.4 percent) had sever job stress. A significant positive correlation was observed between noise and job stress; whereas, there was no significant correlation between WBV and HAV with job stress. 

Regarding high prevalence of severe job stress among bus drivers and the positive correlation between noise and job stress, it is highly recommended that the noise exposure were subside through periodic services and maintenance as well as applying new buses instead of the old ones.

Anesthesiology experts are exposed to significant risks due to advancements in anesthesia techniques and surgery, as well as the emergence of modern equipment and newer drugs, along with increased responsibilities and expectations. Therefore, the present study was conducted with the aim of providing a model for assessing the risks and hazards existing in this profession.

Initially, various sources, including interviews with experts and reviews of articles, were used to extract occupational risks in the field of nurse anesthetist. Subsequently, the study criteria, including consequence, probability, and exposure, were determined, and the weighting of these criteria was calculated using AHP.Finally, the prioritization of different risks was determined using CoCoSo.

Based on the results of determining the weights of criteria using the AHP, it was identified that the consequence with a weight of 0.43 is the most important criterion, while the exposure criterion with a weight of 0.27 is the least important criterion in this study. Also, among the investigated risks, inhaling anesthetic gases while wearing a mask, filling a vaporizer(R5) was selected as the most dangerous risk, followed by skin contact with scrubs or blood, patient's secretions or infected tissues(R1), needle sticking during venipuncture,patient's spinal anesthesia(R12), which were selected as the second and third most dangerous risks in anesthesiology experts job, respectively.

In this study it was established that the proposed method can be used for risk assessment and prioritization of occupational hazards in the job of a nurse anesthetist as well as other professions

occupational hazards in nurses are very high, which leads to increased absenteeism from the workplace, more visits to the doctor, reduced service provision, loss of working hours and disability. Improper safety climate can be one of the causes of occupational accidents. This study was conducted to determinate the prevalence, causes of occupational hazards and the existing safety climate in Gorgan educational hospitals from the nurses' point of view.

This was a cross-sectional study and was conducted in teaching hospitals of Gorgan city. 267 nurses participated in the study by stratified random sampling. The data were collected using valid and reliable questionnaires on the frequency of occupational hazards, causes of occupational hazards, and safety climate and were analyzed using Spearman, Mann-Whitney, and Kruskal-Wallis correlation coefficient tests.

In terms of physical injuries, 94% of nurses had suffered from musculoskeletal disorders. 90.3% expressed that they were threatened and verbally and physically attacked by the patient and his companions. The large amount of nursing work (61%) was the main and most common cause of occupational injuries in the workplace of nurses. The average score of the existing safety climate was 3.10 ± 0.6.

A high percentage of nurses reported physical and mental injuries caused by work, and the safety atmosphere among nurses was relatively moderate. To reduce physical injuries, nursing managers must pay attention to injury prevention methods and how to deal with this problem.

Occupational safety is an important and significant issue that helps maintain the health and safety of employees and prevent occupational accidents and injuries. Therefore, the present study was conducted with the aim of reviewing and analyzing books related to occupational safety.

The current research employed a descriptive and bibliometric methodology. The research population included all the books registered on the National Library website from the beginning to the end of 1401. Data were analyzed using Excel and Minitab software. Descriptive statistics and frequency distribution tables were used for data analysis.

The results indicated that a total of 2,617 book titles were published by the end of 1401. Furthermore, the trend of book publishing over the last five decades has been generally increasing. The majority of the published books were in the subject categories of general safety (17.7), fire (11.9) and crisis management, and emergency response (7.94).

Generally, it can be concluded that safety is a crucial concern in the industry and workplace, and Iranian authors have devoted significant attention to this field by writing various books. To enhance the quality of published books, authors are advised to conduct regular research, consult with experts in the field of occupational safety, assess industry needs through communication, engage with book audiences and gather feedback, and plan for updates to their published works.

This study was conducted with the aim of determining the effect of different disinfection methods on the efficiency,pressure drop and quality of medical masks used by medical staff. Also,the filtration efficiency of medical masks was investigated in the present study

In the present study, 4 models of medical masks used by the treatment staff were selected. Then the masks were disinfected with the disinfection methods recommended by the disease control and prevention centers, including heat methods, autoclave, ultraviolet rays,immersion in 70% alcohol and immersion in sodium hypochlorite.Finally,the effect of each disinfection method on The efficiency, pressure drop and quality of the masks were checked using the test system

Based on the results obtained from the study,disinfecting masks using thermal methods, autoclaving, ultraviolet radiation, immersion in sodium hypochlorite, and immersion in 70% alcohol caused changes in efficiency by 5.58%,9.83%,8.15%,13.34%,and20.38%, respectively and Additionally, changes in pressure drop were observed at the rates of12.9, 7, 6.92,183.75,and16.13 Pa respectively.Moreover,the quality factor of masks improved after disinfection in thermal methods and autoclaving,in contrast to other methods.Furthermore, the assessment of filtration efficiency indicated that three out of four types of masks examined had efficiencies lower than 85%

Disinfection of medical masks using the heat method was chosen as the best disinfection method due to the least change in efficiency,a slight increase in pressure drop, and availability,and the 70% alcohol immersion method was chosen as the weakest disinfection method due to the decrease in efficiency,increase in pressure drop,and destruction of the mask's structure

goal of safety activities are focused on reducing the risk of the workplace, and very few activities are focused on increasing the organizational culture and safety. The purpose of this study is to examine the relationship between organizational culture and safety in one of the largest automobile companies in the country.

Materials and Methods:

 The current research was a correlational study that was conducted at a certain point in time in 2015. The statistical population of this research is made up of the employees of paint and body salons, 255 people were selected using the limited population sampling formula. The data collection tool in this research is the questionnaire, which has three sections of information, which respectively included questions related to demographic characteristics, organizational culture, and employee safety culture. In order to investigate the organizational culture, a 29-question questionnaire was considered based on the ten indicators of the Robbins model (Robbins, 2001), which was validated and reliable in previous studies, and a 37-question organizational culture questionnaire was used for organizational culture.

Among the indicators of organizational culture in the studied organization, the control index (with an average score of 10.76) had a better status than other components and the reward system index (with an average score of 6.24) had an unfavorable status compared to other components. Also, in terms of safety culture, with an average of 130, it indicates a positive safety culture in this company. The cultural relationship between safety and some dimensions of organizational culture was significant.