95 results on '"Ramin Mehrdad"'
Search Results
2. Association between moderate noise level and depression, anxiety, and stress in non-industrial employees
- Author
-
Haniyeh Ekhlas, Hamidreza Pouragha, Mohammadreza Monazzam, Ramin Mehrdad, Parisa Bahrami, and Mojgan Zaeimdar
- Subjects
occupational noise exposure ,mood disorder ,occupational groups ,Environmental pollution ,TD172-193.5 - Abstract
Introduction: Previous studies have been conducted on the effects of exposure of industrial workers to high levels of noise and their association with mental health or exposure of people to harmful levels of environmental noise. In this study, we investigated the association between moderate noise levels and the symptoms of depression, anxiety, and stress in non-industrial workers. Material and Methods: This study is a Cross-Sectional study that was conducted using the enrollment phase data of the Tehran University of Medical Sciences Cohort (TEC) study. The study population consisted of 3899 workers of Tehran University of Medical Sciences who were employed in seven occupational groups of the university, Office Workers, Healthcare workers, technical personnel, services workers, security guards, and radiology-radiation units. Exposure to moderate noise level was examined using the Leq10min index, and the Depression Anxiety Stress Scales were examined on the mentioned population by DASS-42 questionnaires. Results: The results showed that the prevalence of severe to very severe symptoms of depression, anxiety and stress were 8.2, 7.9, and 11% respectively. Also, it was observed that 14.5% of the participants of the study were exposed to noises of more than 70 dB(A). Furthermore, the results indicated that the highest average noise was equal to 71.3 dB(A) for the technical staff group, and the lowest value with an average of 59.1 dB(A) was recorded for the office workers group. The symptoms of severe to very severe depression was associated with exposure to noises above 70 dB(A) (OR:5.22) anxiety (OR:1.16), stress (OR:1.17) and socioeconomic status (OR:1.84). The severe to very severe anxiety was associated with stress (OR: 1.25). On the other hand, the symptoms of severe to very severe stress was associated with variables of age (OR:0.99), gender (OR:0.46), socioeconomic status (OR:1.52), having job management position (OR:0.81) and having healthcare working job (OR:0.65). Conclusion: Regarding the obtained results of the present study, it was concluded that exposure to moderate noise levels had positive and significant association with depression in non-industrial workers. In non-industrial work environments, exposure to moderate noise levels is and can be independently associated with depression.
- Published
- 2021
3. Risk Factors of Work Related Musculoskeletal Disorders in Iranian Workers during 2000-2015
- Author
-
Adel Mazloumi, Ramin Mehrdad, Zeinab Kazemi, Zahra Vahedi, and Leila Hajizade
- Subjects
prevalence ,work-related musculoskeletal disorders ,systematic review ,iranian workers ,Environmental pollution ,TD172-193.5 - Abstract
Introduction: Musculoskeletal disorders (MSDs) are prevalent in work settings and are associated with high rate of prevalence and costs. Musculoskeletal conditions have multifaceted nature, and occupational factors play an important role in their development. The aim of this study was to identify the risk factors of work-related musculoskeletal disorders in the working population in Iran during 2000 to 2015. Material and Methods: Using the appropriate search terms, articles published in the journals, student thesis, and those presented at the conferences were searched through authentic English databases (Google Scholar, Scopus, PubMed) and Farsi ones (Magiran, SID, IranMedex, Irandoc). Following removal of duplicate citations and irrelevant studies, the full texts of the remaining publications were prepared and assessed for more detail. Results: Perceived discomfort in low back region obtained the highest score in workers of industrial, administrative, service, and agricultural settings. However, in the handicraft and educational groups, the highest percentage of discomfort was belonged to neck (66.7%). Findings showed that the most commonly used techniques for evaluation of musculoskeletal disorders and risk factors were, respectively, Nordic questionnaire (NMQ) (76%) and REBA (13.9%). Moreover, all identified risk factors were classified into eleven groups including: biomechanical, work environment design, tools, equipment, temporal aspects of job design, job content, organizational aspects, economic and financial issues, social aspects, individual characteristics, and training. Conclusion: Overall, a wide range of risk factors reported in the previous studies were categorized in the present review. The results are suggested to be considered by managers and decision makers as a framework to take measures for controlling musculoskeletal disorders to accomplish the goal of ergonomics, which is productivity and well-being.
- Published
- 2021
4. Prospective cohort study on the social determinants of health: Tehran University of Medical Sciences employees` cohort (TEC) study protocol
- Author
-
Saharnaz Nedjat, Ramin Mehrdad, Masud Yunesian, Hamidreza Pouragha, Vali Biagi, and Mohammad Reza Monazzam-Esmaeelpour
- Subjects
Social determinant of health ,Occupational health ,Cohort ,Protocol ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background In this study, the association between the social determinants of health (SDH) as well as other health risk factors and outcomes will be evaluated at different socioeconomic layers. Methods/design This is a prospective cohort study that was launched in January 2018 on Tehran University of Medical Sciences’ employees. The initial enrolment phase will continue up to March 2021, or until a sample size of 5500 is reached. In addition to annual phone-calls, the participants will be followed thrice at 5-year intervals. Data are collected through blood and urine samples, complete physical examination, anthropometric evaluation, and the completion of questionnaires related to SDH, such as socioeconomic status and social capital, history of diseases, lifestyle (including, nutrition, physical activity, cigarette and hookah smoking), occupational exposures (including psychosocial factors at work and work-family conflicts), and different aspects of physical, mental and occupational health as health outcomes. The association between independent variables and health (objective or subjective) are examined using multiple models and by controlling the confounding effects. Moreover, the trend in lifestyle changes and its impact on health are evaluated. Discussion Our study will explore the key social determinants as well as other factors including socioeconomic status and social capital, history of diseases, lifestyle and occupational exposures that affect health. This will provide social and occupational health decision-makers and stakeholders with new and valuable evidence in an era in which we are witnessing huge changes in lifestyle.
- Published
- 2020
- Full Text
- View/download PDF
5. Violence Against Medical Assistants by Colleagues at Educational Hospitals and Its Effects on the Quality of Education
- Author
-
Mehdi Chinichian, Abbas Aghabiklooei, Ramin Mehrdad, Gholamreza Pouryaghoub, and Milad Orouji
- Subjects
medical residents ,violence ,hospital ,education ,Medicine (General) ,R5-920 ,Toxicology. Poisons ,RA1190-1270 - Abstract
Background: Violence against medical assistants (residents) by colleagues is a serious problem at educational hospitals that has not been sufficiently examined. The present study was conducted to determine the prevalence, risk factors, and types of violence perpetrated by colleagues against medical assistants. Methods: In a cross-sectional study conducted at two large tertiary referral educational hospitals, the study questionnaires were distributed among 480 healthcare professionals to investigate their experiences of violence. Results: Of 280 responders, 162 residents (57.9%) reported a history of violence or aggression. Of these, nearly 50% had experienced pure psychological violence, and 16.7% had been physically abused. The prevalence of victimization was high among the residents of the neurosurgery, orthopedic, and obstetric departments (90%, 88%, and 85%, respectively). Conclusion: Harassment experience was more common among the surgical residents than the internal medicine residents because of the former’s high level of work stress. Senior residents or fellowship residents were the main abusers. Losing professional self-esteem, decreasing job satisfaction, and dropping out of school were the main adverse outcomes of violence experienced by the victims.
- Published
- 2022
- Full Text
- View/download PDF
6. Risk Factors of Low Back Pain in Iranian Workers during 2000-2015: a systematic review
- Author
-
Adel Mazloumi, Zeinab Kazemi, Ramin Mehrdad, Zahra Vahedi, and Leila HajiZade
- Subjects
Prevalence ,Low back pain ,Systematic review ,Iranian workers ,Environmental technology. Sanitary engineering ,TD1-1066 - Abstract
Introduction: Previous studies confirm direct and indirect costs of low back pain in occupational settings. However, there is no systematic study of the risk factors for low back pain in different occupations; while planning and allocating resources requires comprehensive knowledge at the national and regional levels in order to control and manage low back pain. Therefore, the aim of this study was to identify risk factors of low back pain in Iranian workers during the years 2000 to 2015. Methods: Published journal papers, articles presented at the congresses and student thesis reports were systematically reviewed. Abstracts were extracted using appropriate keywords and authentic English-language (Google Scholar, Scopus, and PubMed) and Farsi (Magiran, SID, IranMedex, and Irandoc) databases. Following quality assessment of the selected publications, the full texts of the related ones were reviewed. Results: In 150 eligible studies, the mean prevalence of low back pain in the last 12 months was 48.77. Nordic questionnaire was the most commonly used technique for assessing back pain, and RULA and REBA were the most commonly used method for determining risk factors. All risk factors were categorized into nine groups: biomechanical, workplace design, tools and equipment, environmental, temporal aspects of job design, job content, organizational aspects, personal characteristics, and training. Conclusion: According to the findings, about half of the workers in Iran experienced low back pain. Considering the widespread risk factors and the high prevalence of low back pain among various occupational groups, it is suggested that appropriate measures be taken based on the findings of this study.
- Published
- 2020
7. Customization and validation study of WHO surgical safety checklist as a tool to control medical error in operation rooms in Iran
- Author
-
Adel Mazloumi, Maryam Azizpour Marzi, Ehsan Garosi, Mehdi Yaseri, and Ramin Mehrdad
- Subjects
surgical error ,who surgical safety checklist ,localization of checklist ,hierarchical task analysis ,table task analysis ,Environmental pollution ,TD172-193.5 - Abstract
Introduction: The Surgical Safety Checklist has been introduced by the World Health Organization (WHO) as a tool for reducing medical errors. Reviewing the results of the checklist application indicates significant reduction in mortality and complications in surgery. Thus, this study aimed to customize and validate surgical safety checklist in order to complying with the surgical protocol in Iran. Material and Method: In this cross-sectional and descriptive study, the WHO Safety Surgery Checklist was first translated. Next, through interviews with specialists and direct observation of activities, those tasks that were susceptible to the incident, identified, prioritized and analyzed using Hierarchical Task Analysis (HTA) and the results presented in form of HTA charts. Then, using Tabulate Task Analysis (TTA) and based on the recommendation and modification commented by expert panel, some questions added to the checklist and a customized version of the Surgical Safety Checklist was provided. Hence, the faced validity, content validity and reliability of the checklist have been evaluated. Result: In the surgery, four major tasks identified for analyzing using the HTA chart. Accordingly, 41 subtasks obtained and analyzed by TTA. The Lavashe method was used to determine the content validity ratio (CVR) and the content validity index (CVI). The question from the checklist, in which, CVI was less than 0.79, modified and replaced with appropriate question. Also, the scores for 3 questions were less than 0.49, and they were removed from the checklist due to the low CVR score. In the reliability assessment, the intra-observer method is used, and the Kappa coefficient obtained was acceptable and it was higher than 0.6, which confirmed the validity of the checklist. Conclusion: In this study, the surgical safety checklist customized in terms of content validity and reliability, in a field study. Considering the compliance of the checklist items with the surgical protocol in Iran, we hope to use it to improve the quality of teamwork and reduce the complications and mortality caused by surgical errors
- Published
- 2018
8. Sickness absenteeism of Healthcare Workers in a Teaching Hospital
- Author
-
Maryam Mollazadeh, Maryam Saraei, Ramin Mehrdad, and Nazanin Izadi
- Subjects
Healthcare Workers ,Absenteeism ,Sickness Absence ,Medicine ,Internal medicine ,RC31-1245 - Abstract
Background: Absence from work for health reasons is known as “sickness absenteeism”. Frequent sick leave is a major concern to any organization, especially hospitals. Objective: This study analyzed the extent and causes of sickness absenteeism in a teaching hospital and evaluated its corelation with demographic and occupational factors. Methods: In a cross-sectional study, data was extracted from computerized records regarding sickness absenteeism of healthcare workers (HCWs) in the Occupational Health Department of a teaching hospital in Tehran. Studied variables included demographic characteristics, occupational factors, and causes of sickness absenteeism. The sickness absence rate (SAR) and absence frequency rate (AFR) in the study period were calculated. Chi-square and Mann-Whitney tests were used for the comparison of categorical and quantitative variables, respectively. Results: In the current study, SAR and AFR were 0.011 and 0.68, respectively. Job type was the only factor that had a significant correlation with sickness absenteeism. The major disease-causing sicknesses were flu (21%) and musculoskeletal disorders (18.9%). Conclusion: A significant relationship was found between the nursing group and sickness absence episodes. Flu, musculoskeletal disorders, and infectious diseases were the most frequent causes of sickness absence. Based on these findings, it can be concluded that factors such as availability of the flu vaccine and providing principles of personal protection and infection control can reduce sickness absence due to infectious disease.
- Published
- 2018
- Full Text
- View/download PDF
9. May short term exposure to high intensity noise produce NIHL in interventional studies?
- Author
-
Gholamreza Pouryaghoub, Ramin Mehrdad, and Farzaneh Chavoshi
- Subjects
noise induced hearing loss ,noise exposure ,audiometry ,Special situations and conditions ,RC952-1245 - Abstract
Background: Exposure to noise can induce hearing loss. Thus noise induced hearing loss is one of the main concerns in interventional study on health effect of noise exposure. We analyzed pre and post exposure audiometeries of volunteers in a clinical trial study that we conducted for effect of noise exposure on cardiovascular system. Methods: In a clinical trial study, 100 healthy, 20-40 aged, volunteer men exposed to 90 dB noise for 30 minute. We take pre and post exposure pure tone audiometric test from all of subjects. Results: Mean of PTA among 100 subjects was reduced 0.72 dB in right ear and 0.44 dB in left ear. Mean of hearing threshold in each of 250, 500, 3000, 4000 and 8000HZ frequencies rise in left ear and was reduced in all of other frequencies in right and left ear. Conclusion: Results of our study indicated that short term exposure to 90 dB noise in interventional studies cannot produce clinically significant hearing loss.
- Published
- 2017
10. Validity and reliability of WRQoL-2 questionnaire for assessment of nurses’ quality of work life
- Author
-
Adel Mazloumi, Zeinab Kazemi, Ramin Mehrdad, Mehrdad Helmi Kohneh Shahri, and Mehran Pour Hossein
- Subjects
quality of working life ,nurses ,work organization ,ergonomics ,Environmental pollution ,TD172-193.5 - Abstract
Introduction: Quality of Work Life (QWL) is a new form of job satisfaction which involves ones feelings about all aspects of their job. The aim of this study was to assess the psychometric properties of the Persian version of WRQoL-2 questionnaire for use in the nursing community. Material and Method: In this study, backward translation method was used in order to verify the linguistics stability. Then, the cross-sectional study was conducted among 270 nurses working in a hospital, affiliated to Tehran University of Medical Sciences. Reliability and construct validity was investigated using test-retest and factor analysis, respectively. In addition, discriminant validity was assessed by comparing QWL mean scores of nurses satisfied with their salary and those who were dissatisfied. Result: Regarding the reliability, it was observed that the repeatability coefficient were at an acceptable level for all dimensions of the WRQoL-2questionnaire. According to factor analysis, six components were identified with some questions in different groups compared to the original questionnaire. Considering discriminant validity, all components, except Stress at Work, obtained P-value less than 0.05. Conclusion: Based on the acceptable level of reliability and validity of the WRQoL-2 questionnaire, use the questionnaire to assess the quality of work life of nurses is recommended.
- Published
- 2017
11. Predictors of early return to work after a coronary artery bypass graft surgery (CABG)
- Author
-
Ramin Mehrdad, Noroja Ghadiri Asli, Gholamreza Pouryaghoub, Maryam Saraei, Firoozeh Salimi, and Mostafa Nejatian
- Subjects
quality of life ,rehabilitation ,return to work ,predict ,coronary artery bypass graft ,CABG ,Medicine - Abstract
Objectives: Identifying factors predictive of early return to work in patients who underwent a coronary artery bypass graft surgery (CABG). Material and Methods: Two hundred twenty-six working patients who volunteered and underwent a primary coronary artery bypass surgery between September 2013 and May 2014 were selected for the study and followed up for 6 months. Predictors of early return to work (RTW) (within 2 months) were analyzed from variables in a prospectively collected database and the 36-Item Short Form Health Survey (SF-36) questionnaire carried out in the hospital and rehabilitation center as well as from the follow-up performed via the phone. Results: One hundred and two (45.1%) and 155 (68.9%) patients returned to work within 2 and 3 months after the surgery, respectively. Furthermore, 196 patients (87.1%) returned to work within 6 months after the surgery. In the univariate analysis, demographic or socioeconomic factors (such as age, level of education, income), occupational factors (such as occupation type, working hours per week, duration of the preoperative absence from work), psychological factors (such as a patient’s concern about adverse health effects of RTW, feeling depressed, a patient’s attitude towards his/her ability to RTW and a patient’s perception of his/her job stress level) and medical factors (such as serum troponin T and creatine kinase MB (CKMB) level, pump time in surgery, co-surgery and dyslipidemia history) had a statistically significant correlation with early return to work. The patients who early returned to work had significantly higher scores in 3 domains on the SF-36 questionnaire (used for assessing the patients’ quality of life), compared to those who did not return to work early (including physical functioning, role limitations due to physical health and pain). Conclusions: In the present study we identified 4 new medical factors that could be used as predictors of early return to work after CABG. These factors are: normal serum troponin T level, shorter pump time in surgery, normal mean arterial pressure (MAP) before the surgery and higher serum magnesium (Mg) levels. Int J Occup Med Environ Health 2016;29(6):947–957
- Published
- 2016
- Full Text
- View/download PDF
12. Prevalence of Low Back Pain in Health Care Workers and Comparison with other Occupational Categories in Iran: A Systematic Review
- Author
-
Ramin Mehrdad, Narges Sadat Shams-Hosseini, Sara Aghdaei, and Mina Yousefian
- Subjects
Low Back Pain ,Musculoskeletal Diseases ,Prevalence ,Epidemiology ,Healthy Worker Effect ,Health Personnel ,Medicine (General) ,R5-920 - Abstract
Background: There are few research studies evaluating the significance of low back pain (LBP) in Iran, even though the majority of locally published surveys are written in the Persian language. In the present review study, we aimed at appraising published articles related to the burden of LBP and its divergence among different jobs. Methods: A comprehensive search was conducted in all accessible national and international electronic databases from 1948 to mid-2012. The international electronic databases were MEDLINE (PubMed), Web of Sciences, Google Scholar, Scopus, CINAHL, and the Iranian equivalents were SID, IRANDOC, IranMedex, and Magiran. The main search terms were musculoskeletal disorders, musculoskeletal symptoms, low back pain, back pain, and Iran. All keywords were searched electronically by three Boolean operators. The inclusion criteria were age ≥10 years, study focus on LBP prevalence, inclusion of both genders, and no limitation to the study design. A dedicated STROBE questionnaire was developed as a critical appraisal tool and the quality of the identified literature was examined according to the 5-point Linker scale. Articles scoring ≥3 on the Linker scale were appraised. Each literature was screened by four reviewers independently and possible disagreements were streamlined in a joint review meeting. The extracted data were entered into a dedicated table using Microsoft Office Excel program. Data were analyzed for homogeneity using the STATA software (version 11). Results: Of the 51 articles that were included in the present review study, 35 articles reported 1-year LBP with Nordic questionnaire and 3 articles reported point prevalence of LBP. The calculated global prevalence of 1-year LBP in workers was 25% and LBP was the most prevalent issue among health care workers. There was no association between the prevalence of LBP and job classification among workers. Conclusion: LBP is the most common issue among health care workers. It is recommended that future research should focus on this job category for investigating LBP prevalence. This allows parameters that increase the frequency of LBP to be assessed and subsequently permits the reduction or elimination of such factors.
- Published
- 2016
13. Risk factors of sickness absence
- Author
-
Gholamreza Pouryaghoub, Ramin Mehrdad, Fereshte Rafiee Samani, and Fariba Mahmoodi
- Subjects
sickness absence ,chronic disease ,office worker ,Special situations and conditions ,RC952-1245 - Abstract
Introduction: Absenteeism is one of the challenging issues in managing human resources. Many social, economic and personal factors may affect sickness absence. We studied effects of some personal factors on sickness absence in a governmental organization. Methods: In a cross-sectional study, we invited all of white collar workers of one governmental organization to participate in this study. Data regarding personal factors collected for volunteers and combined with long-term sickness absence data which extracted from sickness absence certification files. Results: A total of 527 workers, including 408 males and 119 females participated in our study. Of these 527 participants, 70 (13.3%) had a history of long-term sickness absence in the past three years. Sickness absence spells were significantly associated with female sex, smoking, less than three person kinship responsibility, chronic disease and poor self-rated general health, in regression analysis. Working days lost due to sickness absence were significantly associated with female sex, smoking and chronic disease, in regression analysis. Conclusion: Diseases are not the sole cause of sickness absence and other personal factors may play a significant role on making a decision to withdraw from the workplace.
- Published
- 2016
14. Quality of Spirometry Tests in Periodic Examination of Workers
- Author
-
MARYAM SARAEI, EHSAN HEYDARBEYGI, RAMIN MEHRDAD, and GHOLAMREZA POURYAGHOUB
- Subjects
Spirometry ,Periodic Examinations ,Spirometry Training ,Quality Control ,Environmental technology. Sanitary engineering ,TD1-1066 - Abstract
Spirometry is a tool for screening and early diagnosis of harms caused by occupational respiratory exposures. Since spirometry results largely depend on the spirometry method, their credibility and acceptability may vary. Accordingly, this cross-sectional study was conducted to assess the quality of spirometry procedures and reports in the periodic examinations of workers in an industry. The study assessed a total number of 506 recorded spirometry test results related to the periodic examinations of 190 workers in an industry between 2005 and 2015. Each test was assessed in terms of ATS (American Thoracic Society) standards and the quality of reporting, and the obtained results were compared with the spirometry tests conducted by the research team. The most common error in performing these tests was the failure to allow for the 6-second exhalation (in 70% of the cases). After removing the effect of increasing age, it was found that the reported FVC (Forced Vital Capacity) and FEV1 (Forced Expiratory Volume in one second ) in these tests were different from those in the standard spirometry tests performed by the research team by 5% in more than half of the cases and by more than 10% in a quarter of the cases. The results revealed the poor quality of the spirometry tests in the periodic examinations of the workers. Therefore, it is recommended to train the spirometry operators and monitor more vigorously the quality of spirometry tests in the occupational examinations.
- Published
- 2018
15. Workplace Violence in Medical Specialty Training Settings in Iran: A Cross-sectional Study
- Author
-
GHOLAMREZA POURYAGHOUB, RAMIN MEHRDAD, and PEGAH ALIREZAEI
- Subjects
Workplace violence ,Hospital ,Iran ,Environmental technology. Sanitary engineering ,TD1-1066 - Abstract
Workplace violence is frequent in medical specialty training setting in Iran. Therefore, development and implementation of workplace violence prevention guideline in this setting is a necessity. Workplace violence has become an issue of increasing concern. Residents are often the first physician that patients will meet them. We conducted this study to evaluate workplace violence against medical residents in Iran. In a cross-sectional questionnaire-based study, we asked 1107 medical residents about violence exposure during past 12 months. Overall, 892 of residents (2010-2011) participated in our study (response rate = 80.6%). Prevalence of experience of psychological and physical violence at work was obtained 63.7% and 19.7%, respectively. Sex, residency program, managerial support and year of education had independent effect on violence at work. Our results showed high frequency of violence at work against Iranian medical residents and indicated importance of development and implementation of workplace violence prevention guideline in medical specialty training setting in Iran.
- Published
- 2017
16. Exposure to asbestos in patients with malignant mesothelioma in Iran
- Author
-
Gholamreza Pouryaghoub, Ramin Mehrdad, Soussan Salehpour, and Mehran Shahryari
- Subjects
asbestos ,cancer ,occupational exposure ,malignant mesothelioma ,Medicine (General) ,R5-920 - Abstract
Background: Cancer is the third cause of death in Iran. Approximately 5-10% of all human cancers are thought to be caused by occupational exposure to carcinogens. Dif-fuse mesotheliomas of the peritoneum and pleura are considered "signal tumors," or pa-thognomonic of exposure to asbestos. There is also evidence that nonasbestos agents can induce malignant mesotheliomas. So, we need to study the history of exposure to asbestos in patients suffering from mesothelima to determine relationship between them in Iran, especially in occupational settings. Methods: We received the data of 272 mesothelioma's patients having been registered in 1385 to 1389 in Cancer Bureau, in Ministry of Health. One hundred fifty four of them had telephone number. Finally we could interview with 60 families and gathered data of patient's history of occupation, cigarette smoking and residence place interred in the designed questionnaire. Then we brought out the variants of age, sex, the province of birth place and the involved organs from the data of Cancer Bureau. Analysis of frequency of variants was carried out and compared once in 272 patients being registered in Cancer Bureau and then in the interviewed 60 patients. Results: Distribution of age, sex, the province of birth and living place and the involved organ were similar in cancer registry's data and the interviewed patients. Distribution of cigarette smoking and exposure to asbestos in the interviewed patients were 28% and 63% respectively. Occupational distribution of interviewed patients consisted of con-struction workers 20%, oil company employees 13.3%, administrative staff 8.3% and drivers 6.7%. Conclusion: The results of our study specified the jobs with high risks of exposure to asbestos and approved the relationship between the exposure to asbestos and the inci-dence of mesothelioma in Iran, according to researches in other countries. So the con-sumption of asbestos in Iran, like 20 other countries in the world is necessary to be banned.
- Published
- 2014
17. Effect of Acute Noise Exposure on Salivary Cortisol: A Randomized Controlled Trial
- Author
-
Gholamreza Pouryaghoub, Ramin Mehrdad, and Alireza Valipouri
- Subjects
Noise ,Salivary cortisol ,Cardiovascular ,Hypertension ,Medicine (General) ,R5-920 - Abstract
Cardiovascular adverse effects are interesting aspects of occupational noise exposure. One possible mechanism of these effects is an alternation in hypothalamic-pituitary-adrenal axis. Our aim was to measure salivary cortisol response to relatively high-intensity noise exposure in a controlled randomized trial study. We exposed 50 male volunteers to 90 dBA noise for 20 minutes and compared their level of salivary cortisol with 50 non-exposed controls. Salivary samples obtained before and after exposure. Before intervention means (SD) salivary cortisol level were 3.24 (0.47)ng/ml and 3.25 (0.41)ng/ml for exposed and non-exposed groups respectively. Mean salivary cortisol level increased to 4.17 ng/mlafter intervention in exposure group. This increment was statistically significant (P=0.00). Mean salivary cortisol level of the non-exposed group had statistically non-significant decrement after this period (0.2 ng/ml). The difference between salivary cortisol level of non-exposed and exposed groups after the intervention was statistically significant. Noise exposure may affect the hypothalamic-pituitary-adrenal axis activity, and this may be one of the mechanisms of noise exposure cardiovascular effects.
- Published
- 2016
18. Fitness for Work Evaluation of Firefighters in Tehran
- Author
-
Ramin Mehrdad, Farid Movasatian, and Akram Sadat Momenzadeh
- Subjects
Health ,Firefighter ,Medical Fitness ,Medicine (General) ,R5-920 - Abstract
Firefighting is extremely strenuous and physically demanding work and involves ability to cope with emergency life-or-death situations. Because of the high physical demands of firefighting, successful job performance and minimizing of morbidity and mortality depends on fitness for duty. The firefighting department of Tehran does not perform periodic medical assessment for firefighters. The aim of this study was to evaluate medical fitness among firefighters in Tehran. In this cross sectional study we examined 147 firefighters. Medical and occupational history obtained by interview, then we performed physical examination, blood tests, ECG, spirometry and audiometry. Then results compared with guidelines for firefighters in the USA, Australia and the United Kingdom. Seven percent of our participants had a kind of pulmonary dysfunction and 25% had some degrees of hearing loss. A considerable percent of them had modifiable coronary heart disease risk factors. Thirteen participitants were unfit for this job that among them; ten firefighters were unfit based on vision capability, one case due to hypertention and two cases because of pulmonary dysfunction. Because of hazardouse nature of firefighting; preplacement, periodic medical evaluations and assesment of fitness for firefighters in Iran is highly recommended. Establishment of fitness criteria for firefighters in Iran is necessery to perform assigned functions safely.
- Published
- 2013
19. Epigastric and Umbilical Hernia; Work Relatedness and Return to Work
- Author
-
Ramin Mehrdad, Sadeghniiat Khosro Haghighi, and Amir Hossein Naseri Esfahani
- Subjects
Abdominal Wall Hernia ,Work Relatedness ,Fitness ,Public aspects of medicine ,RA1-1270 - Abstract
Abdominal wall hernia is common but reliable scientific data about its work relatedness is very limited and inconsistent. In this paper, a less common type of abdominal wall hernia in a 30 year old male worker is presented with recurrence after first surgery when he returned to work. In contrast with almost all kinds of hernia, a lifelong limitation for heavy lifting was recommended. It seems that contrary to popular belief, work relatedness of abdominal wall hernia is seriously doubtful, although conclusive evidences are not enough. It is preferable to make decisions cautiously for return to heavy duties of work after surgery of large umbilical, umbilical & epigastric or incisional hernia, while avoiding recommendations for long days off work after surgery of any hernia.
- Published
- 2013
20. Effects of training course on occupational exposure to Bloodborne pathogens: A controlled interventional study
- Author
-
Ramin Mehrdad, Mansooreh Meshki, and Gholamreza Pouryagub
- Subjects
Bloodborne pathogens ,health care workers ,needle stick injuries ,Medicine - Abstract
Background: One of the serious occupational concerns in health care workers (HCWs) is exposure to blood/body fluids that can transmit blood borne pathogens such as human immunodeficiency virus and hepatitis B and C viruses. We are reporting the effects of training course and surveillance on the rate of needle stick injuries (NSIs) among HCWs at an educational hospital in Iran. Aims: To evaluate the effects of training course on the rate of NSIs and its reporting. Methods: We selected two hospitals (A&B) based on their similarities in wards and facilities then asked the managers of these two hospitals to participate in our study. We established a new occupational health center and conducted a training course at hospital A on 2010 and compared it with control group (hospital B). The data from 2009 to 2011 was collected, analyzed to compare pre and post intervention rates. Results: During study period nurses sustained the highest number of injuries (hospital A: n=80; 66.1% and hospital B: n=64; 35.4%). The incidence rate of NSIs in hospital A was 7.16 NSI/100FTE/YEAR before the intervention which was increased to 12.06 after the intervention. In hospital B this rate was 6.05 during three years. Conclusions: The study revealed remarkable increase in the incidence rate of NSIs after the intervention. This is being achieved by meticulous surveillance, training course and improving awareness
- Published
- 2013
21. Sleep quality of professional firefighters
- Author
-
Ramin Mehrdad, Khosro Sadeghniiat Haghighi, and Amir Hossein Naseri Esfahani
- Subjects
Firefighters ,pittsburgh sleep quality index ,shift working ,sleep quality ,Medicine - Abstract
Background: Firefighting is a unique job with contradictious demands that expose firefighters to many well documented causal factors of sleep debt, but no studies in Iran and only a few worldwide studies have investigated their sleep quality while sleep problems may lead to catastrophes especially in critical service workers. The aim of this study is to evaluate sleep quality and its related factors among a sample of professional Iranian firefighters. Methods: Using simple random sampling method in a cross-sectional study, 427 personnel of fire and rescue service were invited. They completed the Persian version of Pittsburgh Sleep Quality Index (PSQI) and a data collection sheet about their demographic and occupational features during an individual face to face interview in central office and firehouses throughout Tehran. Response rate was 88.7%. Results: The mean ± SD global PSQI score was 7.97 ± 3.77. Sleep latency was the component of PSQI with the greatest degree of abnormality. 69.9% of participants were poor sleepers. Interestingly, we found no significant differences between sleep quality of shift workers and non shift workers. Using multiple logistic regression analysis, only having another job, smoking and years of job experience were predictors of poor sleep. Conclusions: In comparison with adult population of Tehran, sleep quality deterioration is notably more common in Tehran firefighters which require health promotion interventions to prevent its serious adverse outcomes.
- Published
- 2013
22. Work Predictors of Lapse in Patients under Treatment of Methadone Maintenance Therapy
- Author
-
Ramin Mehrdad, Benafsheh Zarbafi, Gholamreza Pouryaghoub, and Maryam Saraeei
- Subjects
Methadone Maintenance Therapy ,Lapse ,work ,Predictors ,Psychiatry ,RC435-571 - Abstract
Background: Addiction to narcotics can cause serious problems and monetary losses. Therapeutic success can be predicted through identifying lapse risk factors. Objective: Determining Job Risk Factor of Lapse. Methods: This was a cross sectional study on 351 addicts visiting five methadone clinics. A Data collection sheet consisting of questions on demographic and job information was filled up through direct interviews. Information relating to lapse in the first month was analyzed. Results: The mean (SD) age of the participants was 40(12) years; of them, 74% were employed, of whom 34% had lapsed. A relationship was noticed between education qualification (secondary school compared with higher and lower education) and lapse (p = .04), and also between type of drug abuse (amphetamine) and lapse (p = .001). Conclusion: Lapse was more dependent on type of drug abused, and employment had a protective role, with no correlation with the type of job and other job conditions. Non-work factors mediated/suppressed the role of occupational conditions.
- Published
- 2016
23. Parental occupational exposures of children with Acute Lymphoblastic Leukemia (ALL): a case-control study
- Author
-
Marjan Firoozeh, Gholamreza Pooryaghoob, and Ramin Mehrdad
- Subjects
acute lymphoblastic leukemia ,children ,parental occupational exposures ,case-control study ,Medicine ,Medicine (General) ,R5-920 - Abstract
Objective(s): To evaluate the association of parental occupational exposures to six categories of occupational hazards including pesticides, solvents, paint and pigments, organic and non-organic dusts, and metals with the risk of Acute Lymphoblastic Leukemia (ALL) in their offspring.Methods: From 2007-2009 our hospital based case-control study was performed with 200 children diagnosed with ALL and 200 controls consisting of children suffering from endocrine or rheumatologic disorders, who were matched by age and sex. The study was performed at the Children’s Medical Center and Vali-Asr hospital, in Tehran, Iran. The parents were interviewed face to face to gather information on demographic characteristics, child’s medical history and home exposures, and parental occupational histories.Results: We found that paternal exposures to non-organic dusts {OR (95% confidence interval)=2.17 (1.11-4.26); P=0.02} and metals {OR (95% confidence interval)=2.68 (1.38-5.21); P=0.004} were related to an increased risk of ALL in their offspring. No significant relations were found for the other paternal exposure categories neither for the all maternal exposures categories with the risk of ALL in their offspring.Conclusion: Our study provides support to the association between some paternal occupational exposures and ALL risk in their offspring. Further studies are necessary to corroborate the observed associations in this study.
- Published
- 2012
24. Relationship Between Exposure to Industrial Noise and Serum Lipid Profile
- Author
-
Ramin Mehrdad, Afshin Malek Bahabad, and Azadeh Nahan Moghaddam
- Subjects
Noise ,Hyperlipidemia ,Occupational Exposure ,Cardiovascular Disease ,Medicine (General) ,R5-920 - Abstract
Aim of our study was to investigate the effects of exposure to industrial noise on serum lipid profile among workers who are exposed to noise at work. In a historical cohort study, we recruited 154 and 146 male workers as high and low level noise exposure groups respectively. We defined workers with at least one year exposure to noise level more than 90 dB as high exposure group, and those with exposure to less than 80 dB as low exposure group. Afterwards, in the fasting blood specimens of participants we measured serum Triglyceride (TG), total Cholesterol (TC), high and low density lipoprotein (HDL and LDL). Mean of TG, TC, HDL and LDL for low exposure group were 148, 189, 38 and 103 mg/dl and for high exposure group were 237, 189, 37 and 104 mg/dl respectively. Mean serum TG between two groups was different. Even after adjustment for age, BMI, smoking and work hours per week, serum TG among high exposure group was 89 mg/dl higher than low exposure group and this difference was statistically significant (P=0.00). There was no significant difference between two groups in TC, LDL and HDL levels. This study did not find a statistically significant relationship between exposure to noise and serum TC, LDL and HDL, but TG in two groups was different and this difference was statistically significant.
- Published
- 2011
25. A burden assessment of occupational exposures in Iran, 1990–2010: Findings from the global burden of disease study 2010
- Author
-
Sharareh R NiakanKalhori, Ali Behzadi, Hamidreza Maharlou, Shadi Rahimzadeh, Alireza Khajavi, Gholamreza Pouryaghoub, Ramin Mehrdad, Omid Aminian, Alireza Jeddian, and Shohreh Naderimagham
- Subjects
Global burden of diseases ,Iran ,occupational diseases ,Medicine - Abstract
Background: The present study describes the burden of occupational diseases in Iran based on the results of the Global Burden of Disease study conducted in 2010 (GBD 2010). This study aimed to determine the burden of occupational diseases in Iran based on the results of GBD 2010. It is a cross-sectional study. Methods: Disability-adjusted life years (DALYs) of occupational diseases were calculated based on the prevalence rates obtained through model estimation, as well as GBD 2010 disability weights and mortality rates obtained from different data registry systems of Iran. Causal association criteria application to select risk outcome pairs, estimation of exposure to each risk factor in the population, estimation of etiological effect size, selection of a counterfactual exposure distribution, risk assessment, and identification of burden attributable to each risk factor were the main conducted statistical steps. Results: There was an increasing trend of DALYs (710.08/100,000 people in 1990 and 833.00/100,000 people in 2005) followed by a slight decrease (833.00/100,000 in 2005–784.55/100,000 people in 2010). A total of 50.4% and 36% of total DALYs per 100,000 people were due to the adverse effects of musculoskeletal disorders and work-related injuries, respectively. Conclusions: Musculoskeletal disorders and work-related injuries are the most important adverse consequences of work-related risks that require urgent interventions to be controlled. Male workers (15–25 years and over 60) with the highest DALYs and mortality rates need more training programs, safety regulations, and higher level of protection support. In spite the decreasing trend of occupational disease related DALYs and death rates in Iran in recent years, a long-term effort is required to maintain the currently decreasing trend.
- Published
- 2018
- Full Text
- View/download PDF
26. Peak Expiratory Flow Changes among Welders
- Author
-
GHOLAMREZA POURYAGHOUB, ATEFEHSADAT MORTAZAVI, and RAMIN MEHRDAD
- Subjects
Peak Expiratory Flow (PEF) ,Welders ,Respiratory diseases ,Welding fumes ,Respiratory symptoms ,Environmental technology. Sanitary engineering ,TD1-1066 - Abstract
More than one percent of the labor force in each country consists of welders exposed to various damages caused by welding. The number of studies conducted in this field is low, especially in Iran. In this paper, we tried to discover any temporary and reversible obstructive effect of welding fumes on the respiratory systems of welders. In this cross-sectional study, peak expiratory flow rates and respiratory symptoms of 37 welders during work shift were evaluated. Peak expiratory flow rates of welders were recorded in three working days and one non-working day. Peak expiratory flow rates in working days were compared with non-working Peak expiratory flow rates as a control measure. PEF values were higher in every recorded time in non-working days than that of working days. Besides, PEF of the middle shift decreased an hour after end of the shift had increased. Changes in PEF since the start of shift until an hour after the shift had the same pattern in all four days, but in conflict with daily physiological patterns. Fewer people complained respiratory symptoms such as cough and sputum in non-working days. Therefore, exposure to the welding fumes can result in reversible and temporary effect on PEF and this could lead to bronchial irritation and cause respiratory symptoms. Therefore, it is recommended that welders use sufficient respiratory protection and weld in places with air ventilator specialty when welding with CO2 in order to reduce irritant effects of welding fumes on respiratory systems.
- Published
- 2015
27. Effect of Zolpidem on Sleep Quality of Professional Firefighters; a Double Blind, Randomized, Placebo-Controlled Crossover Clinical Trial
- Author
-
Ramin Mehrdad, Khosro Sadeghniiat Haghighi, and Amir Hossein Naseri Esfahani
- Subjects
Zolpidem ,Professional firefighters ,Sleep quality ,Occupational Medicine ,Medicine (General) ,R5-920 - Abstract
Professional firefighting is among the most demanding jobs. Prior studies have showed the notable prevalence of poor sleep quality among professional firefighters that may result in catastrophes. The aim of this study was in field confirmation of zolpidem usage (10 mg/PO/bed time) for short term management of poor sleeps quality among professional firefighters. In a double-blind, randomized, placebo-controlled crossover clinical trial among professional firefighters, 27 poor sleepers were assigned randomly to one of the two groups. Two 14 days experimental periods were separated by a 14-day washout phase. Sleep quality was assessed using the Persian version of Pittsburgh Sleep Quality Index (PSQI). Six of the 27 enrolled voluntaries dropped out. Two rare side effects of zolpidem occurred in the study. A significant improvement of the PSQI score was detected in zolpidem period versus placebo in both groups (7.14 ± 3.02 vs 12.38 ± 2.51, PP=0.89). Zolpidem significantly improved all components of PSQI (Subjective sleep quality, Sleep latency, Sleep duration, Habitual sleep efficiency, Sleep disturbances and Daytime dysfunction) in the current study except the use of sleep medication. Sleep onset latency was the component of PSQI with the greatest degree of abnormality among firefighters in a previous study. Interestingly, sleep latency was the component of PSQI with the most treatment effect of zolpidem in the current study. Zolpidem can be used as a part of treatment regimens in short time management of poor sleep quality among professional firefighters.
- Published
- 2015
28. Urinary 8-Hydroxy-Deoxyguanosine as a Biomarker of Oxidative DNA Damage in Employees of Subway System
- Author
-
Ramin Mehrdad, Sara Aghdaei, and Gholamreza Pouryaghoub
- Subjects
Deoxyguanosine ,DNA damage ,Occupational exposure ,Subway system ,Medicine (General) ,R5-920 - Abstract
Exposure to air pollutants, steel dust or other occupational and environmental hazards as oxidative stress have adverse effects on subway workers' health. Oxidative stress generates an excessive amount of reactive oxygen species (ROS) and Oxygen Free Radicals during their work time in the tunnels. Once DNA is repaired, Urinary 8-hydroxy-deoxyguanosine (8-OHdG) is excreted in the urine. Therefore, urinary level of 8-OHdG can reflect the extent of oxidative DNA damage. The aim of this study was to document the oxidative stress caused by exposure to these hazards by measuring 8-OHdG in workers urine. We collected urine samples of 81 male subway workers after their working shift. The concentration of urinary 8-OHdG was measured by ELISA method. We used linear regression analysis to compare the level of urinary 8-OHdG as a biomarker of oxidative stress between workers in tunnels and other staff. The mean concentration of urinary 8-OHdG for workers in the tunnel was 58.05 (SD=28.83) ng/mg creatinine and for another staff was 54.16 (SD =26.98) ng/mg creatinine. After adjustment for age, smoking, driving and a second job in a linear regression model, the concentration of 8-OHdG for the exposed group was significantly higher than unexposed group (P=0.038). These findings confirm that the concentration of urinary 8-OHdG for workers who work in tunnels was significantly higher than the other staff. Additional investigations should be performed to understand that which ones of occupational exposures are more important to cause oxidative stress.
- Published
- 2015
29. Disparities in the prevalence of metabolic syndrome between Iranian industrial workers and university staff
- Author
-
Hamidreza Pouragha, Gholamreza Pouryaghoub, Mahsa Naserpour, and Ramin Mehrdad
- Subjects
Endocrinology, Diabetes and Metabolism ,Internal Medicine - Published
- 2023
30. Association between Red Blood Cell Distribution Width and Pulmonary Function among Iranian Employees
- Author
-
Gholamreza Pouryaghoub, Hamidreza Pouragha, Tayebeh Nasiri Ardali, and Ramin Mehrdad
- Subjects
Pulmonary and Respiratory Medicine - Abstract
Background: RDW has been proposed as a routine test and is available as a prognosis for many diseases and disorders, especially respiratory disorders. In this study, we intend to see if the association between pulmonary function and RDW also applies to non-patients. Methods: This study was performed on 800 people including 466 women and 344 men. Participants in the study were staff enrolled in the Tehran University of Medical Sciences cohort [TEC] study. In this study, RDW levels and pulmonary function were assessed. Elderly populations were not in-cluded in this study. Results: The results of the univariate analysis showed that normal values versus abnormal values of RDW were significantly associated with pulmonary function index FEV1, FVC, FEV1/FVC in non-patient individuals. On the other hand, a significant correlation was observed between RDW values and FEV1 index and FEV1/FVC ratio. Based on linear regression, there was an association between RDW and FVC [R2=0.721]. Conclusion: In this study, we found an association between RDW and FVC so we suggest that ab-normal RDW may be considered as a sign of pulmonary dysfunction.
- Published
- 2022
31. The predictors of occupationally related injury in employees of Pasteur Institute of Iran
- Author
-
Rouzbeh, Bashar, primary, Korosh Holakoyee, Nayini, additional, Ramin, Mehrdad, additional, Maryam, Fazeli, additional, Masoumeh, Arab, additional, and Nazanin, qShabansalmani, additional
- Published
- 2023
- Full Text
- View/download PDF
32. Prevalence of uncorrected distance refractive errors and associated risk factors in employees of an academic centre
- Author
-
Parya Abdolalizadeh, Ramin Mehrdad, Bahar Saberzadeh-Ardestani, Hamidreza Pouragha, Fateme Alipour, and Mehrdad Esmaili
- Subjects
Ophthalmology ,Optometry - Abstract
Uncorrected refractive error (RE) may affect the work performance of adults in the workplace. The aim of current study was to determine the prevalence of corrected and uncorrected RE, and the determinants of uncorrected RE in adult employees of a university.This was a cross-sectional study of Tehran University Medical Sciences' staff. Besides demographic and some specific questionnaires, ophthalmic examinations including the measurement of uncorrected visual acuity (UCVA), best spectacles corrected visual acuity (BCVA), and presenting visual acuity were performed for all participants. The need for spectacles was defined as UCVA worse than 6/12 in the better eye that could be corrected to better than 6/12 with spectacles based on subjective refraction.In total, 4460 individuals with mean age of 42.32 ± 8.80 were included in the study. The VA of the better eye was 0.01 ± 0.05 logMAR for BCVA, 0.13 ± 0.26 for UCVA, and 0.05 ± 0.12 for presenting VA. Prevalence of RE was 15.7%, including uncorrected RE of 5% and spectacles coverage (corrected RE) of 10.7%. The proportion of individuals with elementary education and poor-fair status of general health were 1.62 times higher in the uncorrected group. In the univariate analysis, type of occupation (office versus non-office workers), socioeconomic status, and insurance of employees were not related to uncorrected RE (all P 0.4). Myopia was the only factor associated with uncorrected RE in logistic regression analysis (odds ratio = 2.73, 95%CI = 1.02-7.31, P = 0.04).The prevalence of uncorrected RE and spectacle coverage were 5% and 10.7%, respectively. Myopia was almost three times more likely to be associated among employees with uncorrected RE.
- Published
- 2022
33. Association Between Body Composition and Pulmonary Function Tests Among Health Care Workers in Iran
- Author
-
Hamidreza Pouragha, Ramin Mehrdad, Hosein Kazemi, and Gholamreza Pouryaghoub
- Subjects
Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,business.industry ,Body water ,Anthropometry ,Pulmonary function testing ,FEV1/FVC ratio ,Waist–hip ratio ,Internal medicine ,Cohort ,medicine ,Lung volumes ,business ,Bioelectrical impedance analysis - Abstract
Background: Why is bodyweight not a predictor of lung function, while height, sex, race, and age are predictors of lung capacity and function? In this study, we want to investigate the association between body composition and pulmonary function. And, as much as possible, answer the question of why bodyweight is not predictive of lung function. Methods: This cross-sectional study was performed among 2967 employees of Tehran University of Medical Sciences (TUMS) who participated in the TUMS Employees Cohort (TEC) study. The body composition of the participants was measured using the Bioelectrical Impedance Analysis (BIA) method. Anthropometric variables were also measured as a confounder. The pulmonary function of participants was assessed by a forced spirometry test. Results: The correlation of BIA values including fat-free mass and total body water with a pulmonary function such as FEV1, FVC, and FEF25-75is higher than most anthropometric values such as weight, wrist circumference, and the waist to hip ratio. Also, in regression analysis, age and sex had an association with pulmonary function, but the weight did not show a significant relationship. On the other hand, fat-free mass and visceral fat were significantly associated with pulmonary function. One is direct and the other is inverse. Conclusion: We observed a negative association between visceral fat and pulmonary function tests and a direct association between Fat-free mass pulmonary function tests (FEV1 and FVC) adjusted for age, sex, and anthropometric indices.
- Published
- 2021
34. Metabolic Age: A New Predictor for Metabolic Syndrome
- Author
-
Hamidreza Pouragha, Gholamreza Pouryaghoub, Mahdiyeh Naderzadeh, Zahra Banafsheh Alemohammad, Ramin Mehrdad, and Mohadeseh Vesal
- Subjects
Metabolic age ,business.industry ,Endocrinology, Diabetes and Metabolism ,Internal Medicine ,medicine ,Physiology ,Metabolic syndrome ,medicine.disease ,business - Published
- 2021
35. Neck pain associated with smartphone overuse: cross-sectional report of a cohort study among office workers
- Author
-
Ramin Mehrdad, Hooshang Saberi, Nazi Derakhshanrad, and Mir Saeed Yekaninejad
- Subjects
Male ,medicine.medical_specialty ,Office workers ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Surveys and Questionnaires ,medicine ,Humans ,Orthopedics and Sports Medicine ,Depression (differential diagnoses) ,030222 orthopedics ,Neck pain ,Neck Pain ,business.industry ,Smartphone addiction ,Psychological distress ,Cross-Sectional Studies ,Physical therapy ,Anxiety ,Female ,Surgery ,Smartphone ,Neurosurgery ,medicine.symptom ,business ,030217 neurology & neurosurgery ,Cohort study - Abstract
The aim of the current study was to investigate the extent of smartphone use, possible correlation with neck pain and/or psychological impairment in office workers. A convenience sample of 1,602 office workers who were using smartphone for prolonged periods (≥ 4 years) participated in a cross-sectional report of a cohort study, assessing demographic, abnormal symptoms of pain in the neck, physical activity, and psychological behavior characteristics. Participants were assessed using a short version of the Smartphone Addiction Scale (SAS-SV), Depression, Anxiety and Stress Scales (DASS-42) questionnaire, as well as International Physical Activity Questionnaire-Short Form (IPAQ-SF). Multiple logistic regression model was conducted to evaluate the adjusted effect of smartphone overuse on nuchal symptoms. The prevalence of neck pain among the office workers was 30.1%. Significantly more female (33.3% vs. 24.5%) and younger (42.2 vs. 43.2 years) employees reported to have neck pain. Overall in 326 (20.3%, 95% CI: 18.4%–22.4%) of studied subjects had, SAS score ≥ 31 and ≥ 33 for male and females, respectively, and so smartphone overuse (SO) was diagnosed. The results of multiple logistic regression model revealed that those with SO were approximately 6 times more likely to have neck pain (95% CI: 4.44–8.09, P
- Published
- 2020
36. Manual material handling in the Tehran Grand Bazaar, a type of traditional heavy work with musculoskeletal effects
- Author
-
Gholamreza Pouryaghoub, Mahdi Chinichian, and Ramin Mehrdad
- Subjects
Adult ,Male ,Lifting ,Waist ,Adolescent ,Health, Toxicology and Mutagenesis ,Iran ,010501 environmental sciences ,Toxicology ,01 natural sciences ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Environmental health ,Prevalence ,medicine ,Humans ,Body Weights and Measures ,Musculoskeletal Diseases ,Occupational Health ,Aged ,0105 earth and related environmental sciences ,General Environmental Science ,Aged, 80 and over ,Bazaar ,business.industry ,Socioeconomic group ,Age Factors ,Public Health, Environmental and Occupational Health ,Middle Aged ,030210 environmental & occupational health ,Occupational Diseases ,Cross-Sectional Studies ,Knee pain ,Socioeconomic Factors ,Work (electrical) ,Push and pull ,Ergonomics ,medicine.symptom ,business ,Material handling - Abstract
Background: Manual Material Handling (MMH) is a type of heavy work that causes a wide variety of musculoskeletal disorders (MSDs). Porters constitute a poor socioeconomic group of workers who are faced with these risk factors. This study focuses on porters who push and pull loads of goods on handcarts inside and outside the Tehran Grand Bazaar.Objectives: This study was conducted to investigate the prevalence of MSDs in porters of the Tehran Grand Bazaar.Methods: Based on official registries, more than 5000 porters work in the Tehran Grand Bazaar. In total, 398 porters were selected using the simple random sampling method. The prevalence of MSDs was assessed using the Standardized Nordic Questionnaire for the Analysis of Musculoskeletal Symptoms. The tasks of the porters were analyzed during walk-through surveys in the Tehran Grand Bazaar.Results: The prevalence of MSDs in at least one body part was 53.8% in the last 12 months and 45.2% in the last 7 days. The most prevalent symptoms in the last 12 months were low-back pain (29.6%) and knee pain (19.6%). Symptoms were associated with age, height, weight, waist circumference, work duration, number of children, and manually handling goods heavier than 20 kg.Conclusions: The prevalence of MSDs is high in the porters of the Tehran Grand Bazaar, likely due to heavy MMH.
- Published
- 2020
37. Predictors of return to work in patients with occupational hand injury
- Author
-
Nazanin Izadi, E. Nasibi, S. Jamshidi, and Ramin Mehrdad
- Subjects
Adult ,Male ,medicine.medical_specialty ,Adolescent ,medicine.medical_treatment ,Poison control ,Iran ,030230 surgery ,Occupational safety and health ,Cohort Studies ,Disability Evaluation ,Young Adult ,03 medical and health sciences ,Injury Severity Score ,Return to Work ,0302 clinical medicine ,Injury prevention ,medicine ,Humans ,Orthopedics and Sports Medicine ,Prospective cohort study ,Aged ,030222 orthopedics ,Rehabilitation ,Hand injury ,business.industry ,Smoking ,Hand Injuries ,Human factors and ergonomics ,Middle Aged ,Prognosis ,medicine.disease ,Occupational Injuries ,Physical therapy ,Marital status ,Female ,Surgery ,business - Abstract
Work-related hand injuries are the primary cause of disability and prolonged time away from work. This prospective cohort study was conducted to determine the predictors of return to work (RTW) after traumatic work-related hand injuries. Our study included 280 patients who were referred to the Plastic and Reconstructive Center for treatment of their occupational hand injuries from July 2017 to February 2018. Several functional questionnaires were completed, and they were followed up at 1, 3 and 8 weeks. Telephone interviews were done 3 months later. Approximately half the subjects had returned to work during the first 3 months after a median time away of 57 days. No relationship was found between age, gender, marital status, hand dominance and RTW time. Nevertheless, there was correlation between RTW time with cigarette smoking, injury severity and disability. Our study findings suggest that injury severity and higher work disability scores are prognostic factors for RTW. Also, smoking was associated with later RTW, which could be the result of poor circulation and delayed healing. Employers should implement injury prevention programs with appropriate rehabilitation that takes into consideration the severity of the hand injury, and health strategies to improve unhealthy lifestyle factors such as smoking.
- Published
- 2020
38. Association Between Absenteeism and Low Back Pain in an Automobile Factory
- Author
-
Masoomeh Mahmoodi Afsah, Gholamreza Pouryaghoub, and Ramin Mehrdad
- Subjects
Medication use ,medicine.medical_specialty ,business.industry ,Medicine public health ,Absenteeism ,Physical therapy ,Medicine ,medicine.symptom ,Association (psychology) ,business ,Low back pain - Abstract
Absenteeism due to low back pain increases the financial burden on society. Therefore, the assessment of LBP-related absenteeism and its associated factors can be helpful. In this cross-sectional study, 771 workers with history of low back pain during last year have been evaluated. Information was collected from examinations carried out by physicians. About 29.2% of the participants had a history of absenteeism, and regression analysis showed that number of children, medication use, and doing MRI were associated with absenteeism. A high frequency of absenteeism was observed (about 30% of workers had LBP), which could be due to the lack of proper management or correct treatment. The other interesting results were the lack of use of medications and primary treatments for the improvement, along with the need to perform an MRI. In terms of the variable of the number of children, higher daily costs and the need for more income can be attributed to their lower absenteeism.
- Published
- 2020
39. Miniscleral Contact Lens in Pediatric Age Group: Indications, Safety, and Efficacy
- Author
-
Fateme Alipour, Sadra Jamshidi Gohari, Nikoo Azad, and Ramin Mehrdad
- Subjects
Keratoconus ,medicine.medical_specialty ,Visual acuity ,genetic structures ,Visual Acuity ,Uncorrected visual acuity ,Eye ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,law ,Ophthalmology ,medicine ,Humans ,Child ,Corneal Scar ,business.industry ,Medical record ,Corneal Topography ,Pediatric age ,medicine.disease ,Contact Lenses, Hydrophilic ,eye diseases ,Contact lens ,Lens (optics) ,030221 ophthalmology & optometry ,sense organs ,medicine.symptom ,business ,030217 neurology & neurosurgery ,Dilatation, Pathologic - Abstract
OBJECTIVE To report indications, fitting feasibility, and safety of miniscleral design (MSD) lenses in children. METHODS Medical records of patients aged
- Published
- 2021
40. Association Between Body Composition with Pulmonary Function Tests
- Author
-
Gholamreza Pouryaghoub, Hamidreza Pouragha, Hosein Kazemi, and Ramin Mehrdad
- Subjects
business.industry ,Association (object-oriented programming) ,Physiology ,Medicine ,Composition (combinatorics) ,business ,Pulmonary function testing - Abstract
Background: Why is bodyweight not a predictor of lung function, however, height, sex, race, and age are predictors of lung capacity and function. In this study, we want to investigate the association between body composition and pulmonary function. And as much as possible, answer the question of why bodyweight is not predictive of lung function.Method: This cross-sectional study was performed among 2967 employees of Tehran University of Medical Sciences (TUMS) who participated in the TUMS Employees Cohort (TEC) study. The body composition of the participants was measured using the Bioelectrical Impedance Analysis (BIA) method. Anthropometric variables were also measured as a confounder. The pulmonary function of participants was assessed by a forced spirometry test.Results: The correlation of BIA values including fat-free mass and total body water with a pulmonary function such as FEV1, FVC, and FEF25-75 is higher than most anthropometric values such as weight, wrist circumference, and the waist to hip ratio. Also, in regression analysis, age and sex had an association with pulmonary function, but the weight did not show a significant relationship. On the other hand, fat-free mass and visceral fat were significantly associated with pulmonary function. One is direct and the other is inverse.Conclusion: The hypothesis that the results of this study created in the minds of the authors were that; The direct association of fat-free mass with pulmonary function may be ineffective by the inverse association of visceral fat with pulmonary function, leading to a lack of association between weight and pulmonary function.
- Published
- 2020
41. Effects of Simultaneous Exposure to Smoking and Welding Fume on Pulmonary Function Tests in Spot Welders
- Author
-
Gholamreza, Pouryaghoub, Elham, Nazem, Ramin, Mehrdad, Maryam, Saraei, and Sahar, Eftekhari
- Subjects
Occupational hazards ,technology, industry, and agriculture ,Original Article ,spot welding ,respiratory system ,pulmonary function tests ,smoking ,circulatory and respiratory physiology ,respiratory tract diseases - Abstract
Background: The respiratory effects of fume exposure during spot welding may aggravate some environmental risk factors such as tobacco smoking. Fume exposure and smoking have negative effects on pulmonary function tests (PFTs). This study assessed the simultaneous effects of smoking and welding fume on spirometry tests in spot welders. Materials and Methods: This cross-sectional study was conducted on 667 spot welders and 1000 assemblers in an automotive manufacturing plant. Spirometry was carried out on all the participants under standard conditions and according to the American Thoracic Society Clinical Practice Guidelines and indices including FEV1, FVC, FEV1/FVC, FEF 25–75, and PEF were measured and compared between two groups of the study population including workers of spot welding and assembling. Results: It was found that the effect of simultaneous exposure to smoking and welding fume was aggravated on the PFT indices including the FEV1 percent, FEV1/FVC, the FEV1/FVC percent, the PEF percent, FEF25–75, and the FEF25–75 percent, but not on indices such as FVC, the FVC percent, and PEF. Conclusion: Simultaneous exposure to smoking and welding fume resulted in a reduction in some spirometry indices, causing respiratory airway obstruction in the spot welders. Occupational safety and regular medical examinations with shorter intervals in smoking spot welders can prevent acute respiratory effects of exposure to smoking and welding fume.
- Published
- 2020
42. Metabolic Syndrome and Pulmonary Function Indices
- Author
-
Gholamreza Pouryaghoub, Mohammad Sadegh Adel Mehraban, and Ramin Mehrdad
- Subjects
cross-sectional ,medicine.medical_specialty ,Vital capacity ,reduced lung function ,Waist ,Population ,Specialties of internal medicine ,030209 endocrinology & metabolism ,metabolic syndrome ,Pulmonary function testing ,03 medical and health sciences ,chemistry.chemical_compound ,FEV1/FVC ratio ,pulmonary function test ,0302 clinical medicine ,High-density lipoprotein ,Internal medicine ,Medicine ,030212 general & internal medicine ,education ,education.field_of_study ,business.industry ,medicine.disease ,Impaired fasting glucose ,Endocrinology ,RC581-951 ,chemistry ,Metabolic syndrome ,business - Abstract
Background and aims: Metabolic syndrome (MetS) is a collection of metabolic risk factors including increased waist circumference (WC), elevated blood pressure (BP), increased triglyceride (TG), decreased high density lipoprotein (HDL-C) and increased fasting blood sugar (FBS). We aimed to examine the relevance between the MetS and its components with reduced lung functions in adult men. Material and method: A total of 3899 adult men underwent screening examination between 2015-2016 in a cross-sectional survey. Results: The mean (± SD) age of our population was 37.25 (± 4.9) years. The overall prevalence of MetS was 7.6%. The total prevalence of reduced lung function in men with MetS was 13.8%. The most common type of reduced lung function was the restrictive pattern (7.1%). The forced expiratory volume of first second (FEV1) and forced vital capacity (FVC) values were significantly lower in men with MetS (both p Conclusions: We obtained a positive independent association between MetS and reduced lung function in adult men which may be related mainly due to increased WC and decreased HDL.
- Published
- 2018
43. Sickness absenteeism of Healthcare Workers in a Teaching Hospital
- Author
-
Ramin Mehrdad, Nazanin Izadi, Maryam Saraei, and Maryam Mollazadeh
- Subjects
lcsh:Internal medicine ,business.industry ,lcsh:R ,Healthcare Workers ,lcsh:Medicine ,Sickness absenteeism ,Occupational safety and health ,Teaching hospital ,Infectious disease (medical specialty) ,Environmental health ,Absenteeism ,Sickness Absence ,Health care ,Sick leave ,Medicine ,Infection control ,lcsh:RC31-1245 ,business - Abstract
Background: Absence from work for health reasons is known as “sickness absenteeism”. Frequent sick leave is a major concern to any organization, especially hospitals. Objective: This study analyzed the extent and causes of sickness absenteeism in a teaching hospital and evaluated its corelation with demographic and occupational factors. Methods: In a cross-sectional study, data was extracted from computerized records regarding sickness absenteeism of healthcare workers (HCWs) in the Occupational Health Department of a teaching hospital in Tehran. Studied variables included demographic characteristics, occupational factors, and causes of sickness absenteeism. The sickness absence rate (SAR) and absence frequency rate (AFR) in the study period were calculated. Chi-square and Mann-Whitney tests were used for the comparison of categorical and quantitative variables, respectively. Results: In the current study, SAR and AFR were 0.011 and 0.68, respectively. Job type was the only factor that had a significant correlation with sickness absenteeism. The major disease-causing sicknesses were flu (21%) and musculoskeletal disorders (18.9%). Conclusion: A significant relationship was found between the nursing group and sickness absence episodes. Flu, musculoskeletal disorders, and infectious diseases were the most frequent causes of sickness absence. Based on these findings, it can be concluded that factors such as availability of the flu vaccine and providing principles of personal protection and infection control can reduce sickness absence due to infectious disease.
- Published
- 2018
44. Association between Metabolic Syndrome and Job Rank
- Author
-
Ramin Mehrdad, Mahboubeh Moradi, and Gholamreza Pouryaghoub
- Subjects
Adult ,Male ,medicine.medical_specialty ,Hyperlipidemias ,030209 endocrinology & metabolism ,lcsh:RC963-969 ,03 medical and health sciences ,0302 clinical medicine ,Insulin resistance ,Occupational Exposure ,Internal medicine ,Hyperlipidemia ,Prevalence ,medicine ,Humans ,030212 general & internal medicine ,Exertion ,Association (psychology) ,Exercise ,Occupational Health ,medicine.diagnostic_test ,business.industry ,Public Health, Environmental and Occupational Health ,medicine.disease ,Metabolic syndrome ,Manpower ,Male workers ,Cross-Sectional Studies ,Blood pressure ,Risk factors ,lcsh:Industrial medicine. Industrial hygiene ,Original Article ,Female ,Lipid profile ,business - Abstract
Background: The occupation of the people can influence the development of metabolic syndrome. Objective: To determine the association between metabolic syndrome and its determinants with the job rank in workers of a large car factory in Iran. Methods: 3989 male workers at a large car manufacturing company were invited to participate in this cross-sectional study. Demographic and anthropometric data of the participants, including age, height, weight, and abdominal circumference were measured. Blood samples were taken to measure lipid profile and blood glucose level. Metabolic syndrome was diagnosed in each participant based on ATPIII 2001 criteria. The workers were categorized based on their job rank into 3 groups of (1) office workers, (2) workers with physical exertion, and (3) workers with chemical exposure. The study characteristics, particularly the frequency of metabolic syndrome and its determinants were compared among the study groups. Results: The prevalence of metabolic syndrome in our study was 7.7% (95% CI 6.9 to 8.5). HDL levels were significantly lower in those who had chemical exposure (p=0.045). Diastolic blood pressure was significantly higher in those who had mechanical exertion (p=0.026). The frequency of metabolic syndrome in the office workers, workers with physical exertion, and workers with chemical exposure was 7.3%, 7.9%, and 7.8%, respectively (p=0.836). Conclusion: Seemingly, there is no association between metabolic syndrome and job rank.
- Published
- 2018
45. Using multiple self-regulated learning measures to understand medical students' biomedical science learning
- Author
-
Ramin Mehrdad, John Sandars, Roghayeh Gandomkar, Ladan Fata, Kamran Yazdani, Mohammad Jalili, and Azim Mirzazadeh
- Subjects
Students, Medical ,media_common.quotation_subject ,Multidimensional assessment ,Context (language use) ,General Medicine ,Self Efficacy ,Education ,Task (project management) ,Metacognitive Monitoring ,Mathematics education ,Humans ,Learning ,Trace analysis ,Aptitude ,Clinical Competence ,Science learning ,Self-regulated learning ,Psychology ,media_common ,Education, Medical, Undergraduate - Abstract
Understanding self-regulated learning (SRL) is complicated due to the different measures used to identify the key SRL processes. There is a growing trend in applying event measures of SRL (microanalysis and trace) but aptitude measures (questionnaires) continue to be widely used in medical education. A major concern is whether aptitude measures are a valid approach to capture the dimensions of SRL processes. This study examined correlations between SRL microanalysis, SRL trace and the Motivated Strategies for Learning Questionnaire (MSLQ) and how these measures were associated with biomedical science performance.An SRL microanalysis assessment interview was administered to 76 first-year medical students individually when performing a biomedical science learning task. All written materials by students were collected for further trace analysis. Students completed an MSLQ 2 weeks before completing their biomedical science course. Correlation analyses were used to determine the correlations between the three SRL assessment measures. Bivariate and multiple analyses were conducted to compare students on different course or task performance using the three SRL assessment measures.Microanalytic metacognitive monitoring (κ = 0.30, P .001) and causal attributions (κ = 0.17, P = .009) had statistically significant correlations with use of the SRL trace strategy. MSLQ self-efficacy correlated with microanalytic self-efficacy (r = .39, P = .001). Bivariate tests showed that microanalytic metacognitive monitoring, causal attributions and adaptive inferences, and SRL trace strategy use had significant associations with task performance (P .05). Microanalytic self-efficacy, metacognitive monitoring and causal attributions, SRL trace strategy use and MSLQ self-efficacy had significant associations with course performance (P .05). Measures of use of the SRL trace strategy and MSLQ subscales did not show significant associations with task and course outcomes in multiple analyses (P .05).Event measures, specifically SRL microanalysis, had greater associations with both task and course outcomes compared with the MSLQ measure. The SRL microanalysis is recommended for the assessment of SRL in biomedical science learning. However, to fully understand medical students' SRL a multidimensional assessment approach that combines event and aptitude measures should be used.
- Published
- 2019
46. Predictive factors for return to work after lumbar discectomy
- Author
-
Elham Mirzamohammadi, Maryam Atarod, Ramin Mehrdad, Hasan Ghandehari, and Nazanin Izadi
- Subjects
Male ,medicine.medical_specialty ,Lumbar Vertebrae ,business.industry ,Lumbar discectomy ,Public Health, Environmental and Occupational Health ,Intervertebral Disc Degeneration ,Return to work ,Cohort Studies ,Return to Work ,health services administration ,Back pain ,medicine ,Physical therapy ,population characteristics ,Humans ,medicine.symptom ,Safety, Risk, Reliability and Quality ,business ,Safety Research ,Intervertebral Disc Displacement ,Work absence ,Diskectomy - Abstract
Background. Lower back pain (LBP) is one of the most common complaints leading to disability and work absence. This study was performed to determine the rate and contributing factors of return to w...
- Published
- 2019
47. Job satisfaction and its relationship to Radiation Protection Knowledge, Attitude and Practice (RP-KAP) of Iranian radiation workers
- Author
-
Ramin Mehrdad, Sima Taghizadeh Dabbagh, S. Shohreh Alavi, and Mahya Abbasi
- Subjects
Adult ,Male ,Health Knowledge, Attitudes, Practice ,Attitude of Health Personnel ,media_common.quotation_subject ,Iran ,Job Satisfaction ,Young Adult ,03 medical and health sciences ,Radiation Protection ,0302 clinical medicine ,Promotion (rank) ,Nursing ,Humans ,Medicine ,media_common ,Staff Attitudes ,Radiology Department, Hospital ,business.industry ,Job attitude ,General Medicine ,Middle Aged ,Payment ,030210 environmental & occupational health ,Medical radiation ,030220 oncology & carcinogenesis ,Female ,Job satisfaction ,Positive attitude ,Radiation protection ,business - Abstract
This study aimed to find the association between job satisfaction and radiation protection knowledge, attitude and practice of medical radiation workers occupationally exposed to ionizing radiation. In this crosssectional study, 530 radiation workers affiliated to Tehran University of Medical Sciences completed a knowledge, attitude and practice questionnaire on protecting themselves against radiation and Job Descriptive Index as a job satisfaction measure during May to November 2014. Opportunities for promotion (84.2%) and payment (91.5%) were the most important factors for dissatisfaction. Radiation workers who were married, had more positive attitudes toward protecting themselves against radiation, and had higher level of education accounted for 15.8% of the total variance in predicting job satisfaction. In conclusion, medical radiation workers with a more positive attitude toward self-protection against radiation were more satisfied with their jobs. In radiation environments, improving staff attitudes toward their safety may be considered as a key strategy to increase job satisfaction.الرضا الوظيفي وعلاقته بمعلومات عمال الأشعة الإيرانيين بالحماية من الإشعاعات وباتجاهاتهم نحوها وبممارستهم لها.سيدة شهره علوي، سيما تقي دباغ، محيا عباسي، رامين مهرداد.هدفت هذه الدراسة إلى العثور عى العلاقة القائمة بن الرضا الوظيفي وبن معلومات الذين يتعرضون للإشعاع المؤين من العاملن في مجال الأشعة الطبية بالحماية من الإشعاعات وباتجاهاتهم نحوها وبممارستهم لها وقد قام في هذه الدراسة المستعرضة 530 عاماً من عال الأشعة التابعن لجامعة طهران للعلوم الطبية بملء استبيان عن المعلومات والاتجاهات والممارسات المتعلقة بحماية أنفسهم من الإشعاع، وعن المنسَب الوصفي للوظيفة كمقياس للرضا الوظيفي من مايو/أيار إلى نوفمبر/تشرين الثاني من عام 2014. فكانت أهم عوامل الاستياء الفرصَ المتاحة للترقية (% 84.2) والراتب (% 91.5). وكانت مواقف عال الأشعة المتزوجن أكثر إيجابية تجاه حماية أنفسهم من الإشعاع، واستأثر المستوى التعليمي الأعى ب % 15.8 من التباين الكلي في التنبؤ بالرضا الوظيفي. وفي الختام، فإن عال الأشعة الطبية الذين كانت اتجاهاتهم تجاه الحماية الذاتية من الإشعاع أكثر إيجابية كانوا أكثر رضاً عن وظائفهم. ويمكن اعتبار تحسن مواقف الموظفن تجاه سامتهم في بيئات الإشعاع اسراتيجية رئيسية لزيادة الرضا الوظيفي.Satisfaction au travail et lien avec les connaissances, attitudes et pratiques en matière de radioprotection des travailleurs iraniens exposés aux rayonnements.La présente étude avait pour objectif de déterminer l’association entre la satisfaction au travail et les connaissances, attitudes et pratiques en matière de radioprotection des travailleurs exposés aux rayonnements médicaux ionisants dans le cadre de leur activité professionnelle. Au cours de cette étude transversale, 530 travailleurs exposés aux rayonnements rattachés à l’université de Sciences médicales de Téhéran ont rempli, entre mai et novembre 2014, un questionnaire portant sur les connaissances, attitudes et pratiques pour se protéger contre les rayonnements, ainsi que sur l’indice de satisfaction professionnelle Job Descriptive Index dans le but d’évaluer leur satisfaction au travail. Les possibilités de promotion (84,2 %) et les salaires (91,5 %) étaient les facteurs les plus importants d’insatisfaction. Les travailleurs exposés aux rayonnements qui étaient mariés étaient davantage disposés à se protéger des rayonnements, et avaient un niveau d’éducation plus élevé représentant 15,8 % de la variance totale relative à l’évaluation de la satisfaction au travail. En conclusion, les travailleurs exposés aux rayonnements médicaux ayant une attitude plus positive vis-à-vis du fait de se protéger étaient plus satisfaits de leur travail. Dans des environnements à rayonnement, améliorer la disposition du personnel à se protéger peut être considéré comme une stratégie clé pour augmenter la satisfaction au travail.
- Published
- 2016
48. Micronucleus, Nucleoplasmic Bridge, and Nuclear Budding in Peripheral Blood Cells of Workers Exposed to Low Level Benzene
- Author
-
Frouzandeh Mahjoubi, Ramin Mehrdad, F Nasiri, I Jamebozorgi, Tayebeh Majidzadeh, Z Saltanatpour, and Gholamreza Pouryaghoub
- Subjects
0301 basic medicine ,Adult ,Male ,Cytoplasm ,Oil and Gas Industry ,010501 environmental sciences ,01 natural sciences ,Andrology ,03 medical and health sciences ,chemistry.chemical_compound ,lcsh:RC963-969 ,Occupational Exposure ,Neoplasms ,medicine ,Humans ,Lymphocytes ,Benzene ,Micronuclei, Chromosome-Defective ,0105 earth and related environmental sciences ,Budding ,Micronucleus Tests ,Leukemia ,Chemistry ,Significant difference ,Public Health, Environmental and Occupational Health ,medicine.disease ,Peripheral blood ,030104 developmental biology ,Case-Control Studies ,Chemical Industry ,Immunology ,lcsh:Industrial medicine. Industrial hygiene ,DNA damage ,Original Article ,Occupational exposure ,Cell nucleus ,Micronucleus - Abstract
Background: Benzene is one of the important occupational pollutants. There are some reports about the leukemogenic effects related to low-level exposure to benzene. Objective: To study the frequency of micronucleus (MN), nucleoplasmic bridge (NB), and nuclear budding (NBUD) in the peripheral blood lymphocytes of petrochemical workers with low level exposure to benzene. Methods: We enrolled 50 workers exposed to low-level benzene and 31 unexposed workers of a petrochemical industry. After exclusion of 3 samples, peripheral blood lymphocytes of the remaining 47 exposed and 31 unexposed workers were analyzed for the frequency of MN, NB, and NBUD by cytochalasin-blocked MN technique. Results: MN was present in 28 (60%) exposed and 18 (58%) unexposed workers. NB was observed in 6 (13%), and 2 (7%) exposed and unexposed workers, respectively; the frequency for NBUD was 20 (43%), and 13 (42%), respectively. No significant difference was found in the observed frequencies of MN, NB, and NBUD in the peripheral blood lymphocytes between the exposed and unexposed group workers. Conclusion: Occupational exposure to low-level benzene does not increase the frequency of MN, NB, and NBUD in the peripheral blood lymphocytes, biomarkers for DNA damage.
- Published
- 2016
49. Association between upper extremity musculoskeletal disorders and mental health status in office workers
- Author
-
Mahya Abbasi, Ramin Mehrdad, Jalil Makarem, Seyedeh Shohreh Alavi, and Azin Rahimi
- Subjects
medicine.medical_specialty ,Cross-sectional study ,business.industry ,Shoulders ,Rehabilitation ,Public Health, Environmental and Occupational Health ,030210 environmental & occupational health ,Mental health ,03 medical and health sciences ,Mental distress ,0302 clinical medicine ,Workforce ,Physical therapy ,Medicine ,Anxiety ,030212 general & internal medicine ,General Health Questionnaire ,medicine.symptom ,business ,Depression (differential diagnoses) - Abstract
BACKGROUND Musculoskeletal Disorders (MSDs) can lead to potential adverse consequences for individuals and their organizations, and in various research, its relationship to physical and mental health of workforce has been studied. OBJECTIVE The purpose of this study was to determine the prevalence of MSDs of upper extremities among office workers and its association with mental health status. METHODS In this cross sectional study, 1488 out of 1630 office workers completed the Standardized Nordic Musculoskeletal Disorders Ques-tionnaire and General Health Questionnaire (GHQ-28) (response rate = 91.3%). RESULTS Upper extremity MSDs were reported in 410 (27.5%) office workers, including 269 (18.1%) shoulder, 79 (5.3%) elbow and 207 (13.9%) hand/wrist symptoms. Based on GHQ-28, 254 (17.1%) participants were found to be at risk of developing a psychiatric disorder that were observed in 26.7% of workers with MSDs symptoms. Shoulder (p
- Published
- 2016
50. Comparison of Refractive Error Changes in Retinopathy of Prematurity Patients Treated with Diode and Red Lasers
- Author
-
Ramin Mehrdad, Mohammad Riazi Esfahani, Ramak Roohipoor, Mohammad Zarei, Reza Karkhaneh, Mahtab Haghighat, Nazanin Ebrahimiadib, and Fateme Alipour
- Subjects
Refractive error ,medicine.medical_specialty ,Visual acuity ,genetic structures ,Red laser ,Birth weight ,Visual Acuity ,Gestational Age ,Lasers, Solid-State ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Optics ,Double-Blind Method ,law ,030225 pediatrics ,Ophthalmology ,Myopia ,Birth Weight ,Humans ,Medicine ,Retinopathy of Prematurity ,Diode ,Laser Coagulation ,business.industry ,Infant, Newborn ,Infant ,Gestational age ,Retinopathy of prematurity ,General Medicine ,Laser ,medicine.disease ,eye diseases ,Sensory Systems ,030221 ophthalmology & optometry ,sense organs ,Lasers, Semiconductor ,medicine.symptom ,business - Abstract
Aim: To compare refractive error changes in retinopathy of prematurity (ROP) patients treated with diode and red lasers. Methods: A randomized double-masked clinical trial was performed, and infants with threshold or prethreshold type 1 ROP were assigned to red or diode laser groups. Gestational age, birth weight, pretreatment cycloplegic refraction, time of treatment, disease stage, zone and disease severity were recorded. Patients received either red or diode laser treatment and were regularly followed up for retina assessment and refraction. The information at month 12 of corrected age was considered for comparison. Results: One hundred and fifty eyes of 75 infants were enrolled in the study. Seventy-four eyes received diode and 76 red laser therapy. The mean gestational age and birth weight of the infants were 28.6 ± 3.2 weeks and 1,441 ± 491 g, respectively. The mean baseline refractive error was +2.3 ± 1.7 dpt. Posttreatment refraction showed a significant myopic shift (mean 2.6 ± 2.0 dpt) with significant difference between the two groups (p < 0.001). There was a greater myopic shift among children with zone I and diode laser treatment (mean 6.00 dpt) and a lesser shift among children with zone II and red laser treatment (mean 1.12 dpt). The linear regression model, using the generalized estimating equation method, showed that the type of laser used has a significant effect on myopic shift even after adjustment for other variables. Conclusion: Myopic shift in laser-treated ROP patients is related to the type of laser used and the involved zone. Red laser seems to cause less myopic shift than diode laser, and those with zone I involvement have a greater myopic shift than those with ROP in zone II.
- Published
- 2016
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.