مجله طب نظامی
سال هفدهم شماره 2 (پیاپی 60، تابستان 1394)

This study has aimed to analyze the validity and reliability of the Baqiyatallah Physician’s Satisfaction Questionnaire (BPSQ) in order to achieve suitable tools for measuring Physician’s Job Satisfaction (PJS). The research sample of this study includes 313 physicians who work in the Baqiyatallah Hospital which were selected by a stratified sampling method. All subjects answered the BPSQ. After checking the translation validity the confirmatory and explanatory factor analysis and Cronbach''s alpha was used in order to examine the construct validity and reliability respectively. The SPSS and AMOS programmer version 18 were used to analyze data. Among the 313 studied subjects 171 (54. 6%) were women and 142 (45. 4%) were men. The explanatory factor analysis showed 4 factors with 53. 6% total variance and 0. 85 Kaser-Meyer-Olkin Index. The result were also confirmed by the confirmatory factor analysis (RMSEA=0. 041، CFI=0. 92، TLI=0. 91، IFI=0. 92، PGFI=0. 71، PNFI=0. 66). Also، the reliability was 0. 83 by using the Cronbach''s Alpha method. As the validity and reliability indexes of the BPSQ were reported to be suitable، it can be confirmed that this questionnaire is a valid and reliable tool for measuring physician’s job satisfaction.

The goal of this study was to confirm the Herzberg Motivation Job Model for health workers in the health military organizations of Iran. This study is an analytical study in which 600 health workers have participated through ratio stratified sample. The motivational factors have been investigated through the Herzberg two-factor theory. In order to analyze data، a confirmatory factor analysis approach using the SPSS version 18. 0 and the Amos Software were used. Finally، in hygiene dimensions، salaries and working conditions (0. 80) had the highest regression weight or effect، and personalized interactions had the lowest regression weight. Between the motivational dimension factors، the nature of responsibilities (0. 89) had the highest regression weight or effect and successful doing of duties had the lowest regression weight (0. 59). With regards to the final models، we can conclude that in order to provide motivation، hospitals must have a particular interest to the salaries and working conditions، duties and responsibilities.

Health care workers are exposed to a variety of risk factors that put them among high risk groups. The existence of different health hazards in the health care industry and the costs of illnesses and the disability of this group for the society، has led to an increase in the importance of their health surveillance. This descriptive study was done in the Baharloo Hospital to improve the occupational health of health care workers. The study included all the staff from April 2012 to March 2012 who were referred to the occupational health clinic. After hazard identification، an occupational health examination was conducted in accordance with state guidelines. In this study 653 staff out of 792 health care workers were covered during 2012. According to the final medical assessment only 6. 6% of staff had medical limitations for their employment. Most hazards were ergonomic (99. 4%) and biological hazards (87. 8%)، respectively. The prevalence of needle stick injuries was 18. 8%. Based on our results، less than 10% of the employees received medical restriction to perform their jobs. Due to the high prevalence of ergonomic hazards، workers are susceptible to work-related musculoskeletal disorders. Also for the prevention of biological hazards and needle stick injuries، the use of appropriate personal protective protocols، training and vaccination is necessary. Finally، it can be concluded that implementing this system in hospitals، provides a safe working environment to protect workers.

The aim of this study was to investigate the association between mental health and socio-demographic characteristics in services duty soldiers of a military base in Tehran، 2012-2013. This study was a cross-sectional study conducted on 102 soldiers. Data was collected by using the General Health (GHQ)، and Socio-demographic characteristics questionnaires completed by a self-administration method. The general linear model was used to determine the socio-demographic predictors of mental health. The mean (SD) total score of mental health was 26. 2 (14. 5) of the attainable score range of 0-84. In more than half of the soldiers (53. 9%) according to the cutoff score of 23، the mental status was undesirable. The soldiers were scored worst in the anxiety and insomnia subscale [7. 79 (SD)] and the best in the depression subscale [5. 00 (SD)] of the attainable range from 0 to 21. In regards to the subscales of physical symptoms، anxiety and insomnia، social dysfunction and depression، respectively 5. 9، 15. 7، 3. 9 and 9. 8 percent of soldiers suffered from severe problems. The general linear model indicated that the survival status of parents and having a stepmother are considered to be a predictor of mental health (P <0. 05). According to the results of this study، it is necessary to address the different levels of mental health in soldiers، providing counseling sessions and giving enough information for promoting their mental health.

The aim of the present research was to assess the occupational heat stress using WBGT and ESI indexes in outdoor workplaces of the Qom province as a hot-arid climate based on meteorological data.

This cross-sectional study was performed based on meteorological data of the Qom meteorological stations in 2013 (from June to September). Environmental parameters including dry temperature، dry soil surface temperature، solar radiation، relative humidity and air velocity were measured every 10 minutes from 7 am to 7 pm. The WBGT index based on the formula provided by the Australian Meteorological Organization was prepared and the ESI index was calculated based on the formula proposed by Moran.

The mean WBGT and ESI were 27oC and 25. 58oC، respectively. The maximum value of WBGT (28. 59 oC) was recorded between 15 pm to 16 pm and the maximum value of ESI (27. 49 oC) was measured between 14 and 15 pm. According to the independent sample-T-test، ESI and WBGT was significantly higher in July than its values in the other months (p<0. 05).

The weather conditions in hot seasons are not suitable for outdoor workplaces with heavy workloads; and the administrative and engineering control measures should be considered seriously.

In this research، a group of triazole derivatives with CYP51 inhibitory activity was subjected to a docking study followed by a quantitative structure-activity relationship (QSAR) analyses. Desired azoles were built using the HyperChem program and conformational studies were performed through a semi-empirical method. A docking study on all of the compounds was performed using the AutoDock program. For this QSAR study، different descriptors were calculated. Docking results revealed the azole-heme coordination، hydrogen bond، π-π and π-cation interactions were involved in the drug-receptor interactions. The developed QSAR model indicated the importance of atomic van der Waals volumes and atomic electro statistics volume on the potency of this group of ligands. The sum of the IDDE، SAA، P1s، Mor17m and DX were identified as the most significant descriptors that affected the biological response. The developed QSAR model was statistically significant according to the validation parameters. According to the results of the docking and QSAR studies، the entire designed compound showed a good inhibition effect on the active site of the enzyme.

The aim of this study was to investigate the prediction of injuries in Iranian soldiers with the Functional Movement Screening. All the subjects were evaluated before the beginning of the trainings. The FMS tests including the deep squat، hurdle step، in-line lunge، shoulder mobility، straight leg raise، trunk stability push-up and rotary stability were used for the subjects’ evaluation. They were monitored for musculoskeletal injuries resulting through a 7-month basic combat training period. At least one musculoskeletal injury had been suffered by 42% of the cadets during the observation period. Logistic regression modeling indicated that the subjects who had a lower FMS score demonstrated higher injury risks (p=0. 001). Also، considering the ROC curve and the Yourdon''s index، the score of 14 was considered as a cut-off point. Therefore cadets whom FMS scores were lower than 14، were considered 5. 6 time higher than the other soldiers exposed to lower extremities injury ROC curve with a cut-off point equal to 14 which shows sensitivity of 0. 83 and a specificity of 0. 93. We can conclude from this study that functional movement screening can predict lower extremity injuries during medical in-processing.

This research has aimed to design and manufacture a smart system for malaria detection and the determination of the plasmodium type in blood samples. Moreover، the design of a low-cost motorized microscope for automated imaging of blood smears has been conducted in this project. Image processing novel methods have been exercised to extract suitable features for the segmentation of red blood cells، malaria parasite detection، and plasmodium type recognition. Afterwards، the pattern recognition methods of artificial intelligence were used to classify and label the extracted objects. Furthermore، the combination of mechatronics and electronics contributes to the manufacturing of a microscope with the capability of moving the blood slide automatically while taking images concurrently. In this research، 12 blood samples contaminated with 4 types of malaria plasmodium were used as the input data. From these slides، 700 images were obtained and used for training and testing the proposed diagnosis algorithms. The accuracy of malaria detection and plasmodium type recognition were achieved more than 95% and 91% respectively by the proposed system. The automated plasmodium type recognition system offers an accuracy almost equal to the level of human experts or even more than human experts in some cases. The low charges of this system and eliminating the need for an expert physician of malaria detection in the endemic regions are the other advantages of this system.