What Predict Self-rated Health: A Cross-sectional Study Among Men and Women with Non-cardiac Chest Pain.

The study aimed to determine different lifestyle and clinical factors that predict self-rated health (SRH) in non-cardiac chest pain (NCCP) patients. In this cross-sectional study, 360 NCCP patients filled out questionnaires about depression, somatization, body sensation, type D personality, and pain intensity. In addition, participants' lifestyle and socio-demographic data were obtained. Multiple regression analyses revealed that among men, pain intensity (OR 1.07; 95% CI 1.03, 1.12), depression (3.10; 1.38, 9.18), somatization (1.18; 1.08, 1.29) and sleep quality (6.23; 1.42, 27.27) were associated with self-rated health. In women NCCP patients, depression (2.44; 1.05, 6.82) pain intensity (1.05; 1.01, 1.10), and physical activity (2.21; 1.07, 5.55) were associated with SRH. The results on the predicting factors of SRH in NCCP patients provide potential insights for more advanced clinical management of NCCP. In addition, they can be applied to improve health policies and promote healthy behaviors among NCCP patients.

An assessment on the use of infra-scanner for the diagnosis of the brain hematoma in head trauma.

PURPOSE: Timely identification and treatment of intracranial hematomas in patients with brain injury is essential for successful treatment. This study evaluates Infra-scanner as a handy medical screening tool for diagnosing, on-site, cerebral hematomas in patients with head injury. MATERIALS AND METHODS: Patients referred to the emergency department of university hospitals with mild to moderate brain trauma, up to 12 h from injury were included. NIR sensors of infra-scan device were placed on the right and left frontal, temporal, peritoneal and occipital parts of the head and light absorption was recorded. Positive or negative cerebral hemorrhage cases were compared with contrast-enhanced CT scan results as the gold standard. Diagnostic parameters of the device and cases related to bleeding were analyzed and reported. RESULTS: A total of 300 patients were studied. Sensitivity of the infrasound scanner in the Iranian study population was 94.8 (95% CI: 88% -100) and its specificity was 86.9 (95% CI: 79% -99% 99). Negative predictive value (NPV) was 90.3% and positive predictive value (PPV) was 92.9%. Sensitivity in men (95.7%) (95%CI, 90% -1) was more than women (95% CI, 81% -99%)90%. At the ages of less than 36 years, sensitivity (95.3%) and specificity (87.1%) were more than sensitivity (94.4%) and specificity (86.5%) over 36 years old. If the test had been performed in less than / equal to two hours from trauma, the sensitivity (94.9%) and the specificity (92%) were greater than the sensitivity (94.6%) and the specificity (75%) during when the scan had been performed in more than two hours from trauma. In general, in extra-axial bleeding including EDH, SAH, SDH, the sensitivity was 95.1% and the specificity was 84.5%, while in intra-axial bleeding, including ICH and IVH, the sensitivity was lower (93.9%) and the specificity was 91.7. The sensitivity of the device in detecting bleeding in the occipital lobe (95.8%) was higher than other brain lobes. CONCLUSION: This study shows that Infra-scanner is useful in initial examination and screening of patients with head injury and can be used as an adjunct to a CT scan or when not available and may allow earlier treatment which reduce the secondary damage to the hematoma.

A Systematic Literature Review of Driver's Sociocultural Factors Predisposing to Road Traffic Crashes.

Background: Various factors are involved in the occurrence and prediction of road traffic crashes (RTCs). The most important of these are human factors that can be influenced by the sociocultural characteristics of the drivers. This research aimed at identifying the socio-cultural factors (SCFs) in car drivers affecting the RTCs. Methods: In the present study, Web of Science, PubMed, Scopus, ProQuest, Google Scholar, Cochran Library, Magiran, Irandoc, Noor magas, Islamic World Science Citation Center, and Scientific Information Database were searched from 1990 to August 20th, 2021; key journals, the reference lists of the included studies, gray literature, websites of relevant organizations were manually reviewed. Studies that reviewed the effect of SCFs related to car drivers in the incidence or prediction of road traffic crashes were included and analyzed using thematic content analysis. Results were expressed based on the PRISMA guideline. The quality of the included studies was assessed using related checklists. Results: Eighty-four eligible studies were determined from a systematic search and entered into the analysis process. Studies are presented that SCFs affecting the occurrence of RTCs fall into four categories, including (1) sociodemographic characteristics, (2) personality traits, (3) driver behavior (driving style), (4) driver performance (driving skills). Conclusion: In most studies, SCFs have been examined in frames of social-demographic characteristics and risky driving behaviors. While, the impact of personality traits and driver performance, which are very important factors on RTCs, has not been addressed. Therefore, investigating the impact of these factors in occurring RTCs is crucial.

A Systematic Literature Review Identifying the Dimensions and Components of Simulation of the Hospital Emergency Department During Emergencies and Disasters.

Background: The use of simulation in medical education is evolving widely around the world. Hospital emergency services in the event of accidents and disasters affect the quality of health care. It is critical to determine the fundamental features for developing a hospital emergency department simulation to improve emergency services. In this regard, the current study conducted a comprehensive assessment of studies with the determinations and components of hospital emergency department simulation during accidents and disasters. Methods: In this systematic literature review, all studies between January 2010 and July 2021 were searched in MEDLINE/PubMed, EMBASE, ProQuest, Scopus, Web of Science, Iran medex Google Scholar, and Scientific Information Database (SID), MagIran databases and were analyzed with the thematic analysis approach and results were expressed based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 guidelines. The quality of the included studies was assessed using related checklists. Results: The findings of this study were divided into 3 main categories and 10 subcategories, including factors related to manpower (manpower arrangement, performance-awareness-skills, safety, and communication), factors related to medical services (triage, time, and transfer of the injured), and factors related to resource management and support (physical environment, equipment, and the information system). Conclusion: Through systematic planning, simulation allows for the identification of emergency department difficulties during accidents and disasters. Identifying dimensions and components, such as resource management and support, manpower, and medical services, is effective in designing the simulation of the hospital emergency department during accidents and disasters. Therefore, it is recommended to conduct future studies with a qualitative approach and focus on the factors affecting the simulation of the hospital emergency department during disasters, which has been done by the same researchers.

Development and Psychometric Evaluation of the Pre-hospital Medical Emergencies Early Warning Scale.

INTRODUCTION: The number of requests for emergency medical services (EMSs) has increased during the past decade. However, most of the transports are not essential. Therefore, it seems crucial to develop an instrument to help EMS staff accurately identify patients who need pre-hospital care and transportation. The aim of this study was to develop and evaluate the psychometric properties of the Pre-hospital Medical Emergencies Early Warning Scale (Pre-MEWS). MATERIALS AND METHODS: This mixed-method study was conducted in two phases. In the first phase, a qualitative content analysis study was conducted to identify the predictors of medical patients' need for pre-hospital EMS and transportation. In the second phase, the face and the content validity as well as the internal consistency of the scale were evaluated. Finally, the items of the scale were scored and scoring system was presented. RESULTS: The final version of the scale contained 22 items and its total score ranged from 0 to 54. CONCLUSIONS: Pre-MEWS helps EMS staffs properly understand medical patients' conditions in pre-hospital environments and accurately identify their need for EMS and transportation.

The effect of combined conventional and modified ultrafiltration on mechanical ventilation and hemodynamic changes in congenital heart surgery.

BACKGROUND: Cardiopulmonary bypass is associated with increased fluid accumulation around the heart which influences pulmonary and cardiac diastolic function. The aim of this study was to compare the effects of modified ultrafiltration (MUF) versus conventional ultrafiltration (CUF) on duration of mechanical ventilation and hemodynamic status in children undergoing congenital heart surgery. MATERIALS AND METHODS: A randomized clinical trial was conducted on 46 pediatric patients undergoing cardiopulmonary bypass throughout their congenital heart surgery. Arteriovenous MUF plus CUF was performed in 23 patients (intervention group) and sole CUF was performed for other 23 patients (control group). In MUF group, arterial cannula was linked to the filter inlet through the arterial line, and for 10 min, 10 ml/kg/min of blood was filtered and returned via cardioplegia line to the right atrium. Different parameters including hemodynamic variables, length of mechanical ventilation, Intensive Care Unit (ICU) stay, and inotrope requirement were compared between the two groups. RESULTS: At immediate post-MUF phase, there was a statistically significant increase in the mean arterial pressure, systolic blood pressure, and diastolic blood pressure (P < 0.05) only in the study group. Furthermore, there was a significant difference in time of mechanical ventilation (P = 0.004) and ICU stay (P = 0.007) between the two groups. Inotropes including milrinone (P = 0.04), epinephrine (P = 0.001), and dobutamine (P = 0.002) were used significantly less frequently for patients in the intervention than the control group. CONCLUSION: Administration of MUF following surgery improves hemodynamic status of patients and also significantly decreases the duration of mechanical ventilation and inotrope requirement within 48 h after surgery.

Traffic accidents in Iran, a decade of progress but still challenges ahead.

Iran has had incremental incidence of traffic accident mortality since introduction of mechanization about a century ago. But the newest data from Iran show decrease in the absolute number of deaths, death per 10,000 vehicles and death per 100, 000 populations. Despite its huge impact on health and economy, research in the field of traffic crashes is still scant and there are still deficiencies in problem oriented research on traffic accidents. Actual cooperation of policy makers, executive bodies and academician could build platform for intersectoral discussion of different aspects of traffic accidents and could reduce burden of traffic accidents.

Life recovery after disasters: a qualitative study in the Iranian context.

INTRODUCTION: Planned and organized long-term rehabilitation services should be provided to victims of a disaster for social integration, economic self-sufficiency, and psychological health. There are few studies on recovery and rehabilitation issues in disaster situations. This study explores the disaster-related rehabilitation process. METHOD: This study was based on qualitative analysis. Participants included 18 individuals (eight male and ten female) with experience providing or receiving disaster health care or services. Participants were selected using purposeful sampling. Data were collected through in-depth and semi-structured interviews. All interviews were transcribed and content analysis was performed based on qualitative content analysis. RESULTS: The study explored three main concepts of recovery and rehabilitation after a disaster: 1) needs for health recovery; 2) intent to delegate responsibility; and 3) desire for a wide scope of social support. The participants of this study indicated that to provide comprehensive recovery services, important basic needs should be considered, including the need for physical rehabilitation, social rehabilitation, and livelihood health; the need for continuity of mental health care; and the need for family re-unification services. Providing social activation can help reintegrate affected people into the community. CONCLUSION: Effective rehabilitation care for disaster victims requires a clear definition of the rehabilitation process at different levels of the community. Involving a wide set of those most likely to be affected by the process provides a comprehensive, continuous, culturally sensitive, and family-centered plan.

A comparative study of stored arterial versus venous blood collected using the acute normovolemic hemodilution method in coronary artery bypass grafting patients in Iran.

BACKGROUND: In the present study, arterial and venous blood was collected from patients who were candidates for elective coronary artery bypass grafting (CABG); the blood was stored for 28 days and cellular, biomechanical, and hematological changes in blood were compared to determine whether stored arterial blood is superior to stored venous blood. METHODS: The present follow-up comparative study included 60 patients >18 years of age, with hemoglobin >14 mg/dl and ejection fraction >40% who were candidates for CABG. After induction of anesthesia, 250 ml of arterial or venous blood was drawn from patients (arterial blood group and venous blood group). Laboratory blood samples were taken at specified times from the collected blood and re-injected into the patients after CABG. RESULTS: Significant differences were observed in pH, partial pressure of carbon dioxide (PCO2), partial pressure of oxygen (PO2), bicarbonate (HCO3), and glucose values at several time points between the groups. Other parameters such as urea and creatinine did not show any significant differences between the groups. CONCLUSIONS: Twenty-eight days of storage can have a negative effect on some of the cellular, biochemical, and hematological components of arterial and venous blood; however, the quality of stored arterial blood and venous blood does not differ significantly.

How public hospitals manage epidemic crises? Lessons from Iranian public hospitals.

BACKGROUND: The public hospital preparedness is essential for epidemic disaster like COVID-19 pandemic. This study was conducted to present a hospital management preparedness model of Iran's public hospitals for the epidemic. MATERIALS AND METHODS: The method of this study was an exploratory sequential mix method study (qualitative-quantitative). In this study, qualitative and quantitative methods were used in four stages. (1) Interviews with hospital managers to identify hospital management experiences during the COVID-19 epidemic and categorize the results in themes and subthemes, (2) assessing the performance of public hospitals in managing the coronavirus epidemic in a quantitative method, (3) present the initial hospital management model for a public hospital in epidemic conditions using an expert panel, and (4) validation of the model using the Delphi method. RESULTS: Experiences of hospital managers and specialists were categorized into eight themes: information gathering and environmental analysis, general and operational planning, provision of equipment and physical and financial resources, training and empowerment of human resources, a compilation of instructions and job descriptions, review and ensuring maximum readiness, monitoring and follow-up of service provision and existing problems, evaluation and feedback of performance problems and level of preparation and 51 sub-themes. The quantitative study indicated that all the investigated indicators had a significant decrease in the first month and an increase in the epidemic's continuation. The results were categorized in nine themes and 59 sub-themes, and finally, the model was validated in one round by the Delphi method. CONCLUSION: In Iran, managers have valuable experiences in COVID-19 epidemy management, but these experiences are scattered and not organized. In this study, by a qualitative-quantitative, a model was presented that contains essential points obtained from the experience of hospital managers and experts in actual disaster conditions and is appropriate and fits hospital structure and infrastructure of the health system in Iran.

Best Practices of Hospitals in Management of Epidemic Conditions: A Scoping Review.

BACKGROUND: Many hospitals globally have valuable experiences in preparing for management and responding to infectious epidemics. Identifying and analyzing these experiences can provide comprehensive and practical data for decision-making and effective performance. This study aimed to conduct a scoping review and content analysis of the best practices of hospital (private or public) management in epidemic conditions. MATERIALS AND METHODS: This research is a scoping review and content analysis, conducted in 2021. Data was collected by searching different databases, including Pubmed, Scopus, Web of Sciences, ProQuest, websites, search engines, and public reports without time limits. Content analysis was performed for data analysis. RESULTS: We retrieved 8842 records from databases and other sources. Finally, 24 studies from 12 countries were selected for analysis. Most studies belonged to the United States (9 cases), and most subjects were on Coronavirus disease 2019 (Covid-19) (19 studies). We classified the results into two major categories of in-hospital executive readiness and logistic readiness. Executive readiness included 11 main categories (physical structure, resource management, exposure reduction, patients and caregivers' management, corpse management, disinfection, staff support, patient admission, instructions and guidelines, tele- communication, and education) and 26 sub-categories. Logistic readiness consisted of three major categories (leadership/team making, communication, and using capabilities) and five sub-categories. CONCLUSION: Healthcare managers can use the identified categories and dimensions of managerial readiness and responsiveness as an action plan during an infectious disease epidemic.

Design and psychometric evaluation of health system intervention assessment tools for children in floods.

BACKGROUND: Flood is one of the most frequent disasters in Iran, which has highly affected the population and consequences on the health system. Children as the most vulnerable group too need to receive health services during floods. The aim of the present study was to develop a national tool for evaluating the provision of health services to children in floods. MATERIAL AND METHODS: This study is a sequential-exploratory mixed method study that consists of two qualitative and quantitative stages. The qualitative part includes the analysis of documents and panel of experts while the quantitative part includes the design and validation of the tools. RESULTS: In this study, organizations providing health services to children were first identified, and according to their mission the relevant items were extracted and the initial checklist was designed. Then validity and reliability of the tools were done. The content validity ratio and content validity index for the tool were 59 and 98%, respectively. Cronbach's alpha and intraclass correlation coefficient were determined as 0.7 and 0.964, respectively. The final tool was presented with 64 items. CONCLUSIONS: The response program, the scope of interventions, service coverage, and the effectiveness of the response after the flood can help reduce the risk of disasters in children. Using the assessment tool of evaluating the health services to children can assist the stakeholder organizations to meet the standards and best quality of services. Assessing the needs of the children affected by floods, identifying the strengths and weaknesses of health services, and proposing corrective strategies according to the information extracted from this tool are other achievements of this study.

The Impact of Psychosomatic Factors on Treatment Adherence of Acute Myocardial Infarction Survivors; A Two-Year Follow-Up Study.

Backgroud: Because of the important role of adhering to treatment to reduce major adverse cardiovascular events and mortality, studying the factors affecting treatment adherence (TA) is warranted. This study aimed to identify the impact of psychosomatic factors on adhering to treatment among patients with acute myocardial infarction. Materials and Methods: This is a cohort study as a part of the Isfahan ST-segment-elevated Myocardial Infarction Cohort Study. Psychosomatic factors such as health anxiety, illness denial, irritable mood, and demoralization were assessed among 867 patients at the first visit. The patients were followed for 2 years; TA and major adverse cardiovascular events were checked annually in survivors. Results: The results from binary logistic regression applied to find the association between TA and psychosomatic factors showed that the patients with health anxiety, irritable mood, and demoralization were significantly poor adherent to treatment (odds ratio [95% confidence interval]: 1.39 [1.02, 2.73], 1.51 [1.02, 2.37], and 1.66 [1.02, 2.91]), respectively. The associations remained the same when adjusted for various potential confounders. Conclusions: Psychosomatic factors played an essential role in adhering to treatment among patients with acute myocardial infarction. As a result, appropriate psychological interventions may help the patients adhere to their treatment better.

Effect of different dosages of nitroglycerin infusion on arterial blood gas tensions in patients undergoing on- pump coronary artery bypass graft surgery.

BACKGROUND: On-pump coronary artery bypass graft (CABG) surgery impairs gas exchange in the early postoperative period. The main object on this study was evaluation of changes in arterial blood gas values in patients underwent on pump CABG surgery receiving different dose of intravenous nitroglycerin (NTG). MATERIALS AND METHODS: sixty-seven consecutive patients undergoing elective on-pump CABG randomly enrolled into three groups receiving NTG 50 µg/min (Group N1, n =67), 100 µg/min (Group N2, n = 67), and 150 µg/min (Group N3, n = 67). Arterial blood gas (ABG) tensions were evaluated just before induction of anesthesia, during anesthesia, at the end of warming up period, and 6 h after admission to the intensive care unit. RESULTS: Pao2 and PH had the highest value during surgery in Group N1, Group N2, and Group N3. No significant difference was noted in mean values of Pao2 and PH during surgery between three groups (P > 0.05). There was no significant difference in HCO3 values in different time intervals among three groups (P > 0.05). CONCLUSION: our results showed that infusing three different dosage of NTG (50, 100, and 150 µg/min) had no significant effect on ABG tensions in patients underwent on-pump CABG surgery.

Determining the diagnostic value of tracheal intubation by palpation and auscultation methods compared to the chest X-ray method in children.

BACKGROUND: It is important to determine the proper location of tracheal tube for proper ventilation. In this study, we compared the diagnostic value of tracheal intubation with two methods of palpation and auscultation with chest X-ray (CXR) method in pediatric. METHODS: In this interventional study, 80 patients under 6 years of age were included. After tracheal intubation appropriate depth of tracheal tube was determined by auscultation and recorded, then by palpation depth of tracheal tube determined and tube was fixed. The length of the tube was calculated with the standard formula based on age. After surgery, CXR was taken and, according to the landmark, the distance from the end of the tube to the anterior lower tooth was recorded. RESULTS: Interclass correlation coefficient (ICC) between the palpation method and the standard method in the number of fixing tracheal intubation was 0.573, which shows the average and significant correlation between these two methods in determining the fixed number of tracheal intubation. ICC between the auscultation and the standard method in fixing tracheal intubation number was 0.430, which shows the average and significant agreement between these two methods in determining the fixed number of tracheal intubation. There is no significant relationship between sex and the average number of fixing tracheal intubation in all methods. CONCLUSIONS: This study has shown that both palpation and auscultation methods are appropriate, but with a slightly higher palpation ICC, the palpation can be considered relatively better.

Benefits of simulation-based education in hospital emergency departments: A systematic review.

BACKGROUND: The emergency department is one of the most important parts of all hospitals. For this reason, many simulation programs are performed in this department to increase the knowledge, skills, and productivity of health-care workers. The purpose of this study was to identify the benefits of simulation in hospital emergency departments. MATERIALS AND METHODS: In the present systematic study, using "AND" and "OR" operators, we searched for the keywords "benefits," "simulation," and "hospital emergency department" in PubMed, Web of Science, Scopus, Google Scholar as well as Persian language databases such SID, Magiran, Irandoc, and Iran Medex. Then, a three-step screening process was used to select studies relevant to simulation and hospital emergency from 2005 to 2021 using the PRISMA checklist, and finally, the obtained data were analyzed. RESULTS: A total of three main groups, each with several subgroups, were extracted and identified as the benefits of using simulation in hospital emergency departments. They included improving the diagnosis of the disease (rapid prediction of the disease, rapid diagnosis, and patient triage), improving the treatment process (improvement of treatment results, anticipation of admission and discharge of patients, acceleration of interventions, and reduction of medical errors), and improving knowledge and skills (improvement of the speed of decision-making, staff's acquisition of knowledge and skills, simple, convenient, and low-cost training, improvement of staff's preparedness in crisis). CONCLUSION: Based on the results of the present study, it is suggested to develop some training programs in order to help staff upgrade their knowledge and performance as well as acquire practical skills and also to improve the diagnosis and treatment process in hospital emergency departments. Virtual methods are also proposed to be applied as potential and cost-effective platforms for learning, teaching, and evaluating the staff of hospital emergency departments.

Development and psychometric evaluation of the emergency nurses' professional resilience tool.

BACKGROUND: There is no specific tool for measuring the professional resilience of emergency nurses. Therefore, the present study aimed to design and psychometrically evaluate a new tool named the emergency nurses' professional resilience tool. METHOD: This mixed-method sequential exploratory study was conducted in two phases: (1) item generation using literature review and evaluation of the results of a qualitative study and (2) psychometric evaluation of the developed scale. The face, content, and construct validity (exploratory and confirmatory factor analysis), reliability (internal consistency, relative, and absolute), and accountability were assessed in the population of Iranian nurses (N = 465) during March 2019-June 2020. RESULTS: The tool designed for assessing the professional resilience of Iranian nurses included 37 items. The average scale content validity index (S-CVI/Ave) was equal to 0.94. The exploratory factor analysis revealed five factors, including professional competencies, emotional-cognitive characteristics, external support, in addition to behavioral and cognitive strategies, and explained 75.59% of the whole variance. Cronbach's alpha and intraclass correlation were 0.915 and 0.888, respectively. Construct validity for five factors was established with acceptable model fit indices [Chi-square/df = 1336.56/619, p < .001]; [Comparative Fit Index [CFI] = 0.96]; [Non-Normed Fit Index [NNFI] = 0.96]; [Root Mean Square Error of Approximation (RMSEA) = 0.074 and 90 Percent Confidence Interval = (0.069; 0.080)]; and [SRMR = 0.095]. CONCLUSIONS: According to the findings of the current study, the emergency nurses' professional resilience tool can be used by healthcare managers as a valid and reliable scale to evaluate the professional resilience of nurses to designate them as nurses working in emergency and disaster situations.

Design and psychometric evaluation of sociocultural scale predicting the incidence of road traffic crashes in drivers.

BACKGROUND: Various factors are involved in the occurrence of Road Traffic Crashes (RTCs), one of the most important of these are human factors that can be greatly influenced by the specific sociocultural bases of the drivers. So far, there has not been a scale for measuring Sociocultural Factors (SCFs) predicting the occurrence of RTCs in Iranian drivers. Therefore, the present study was conducted to design and to do psychometric evaluation of a scale for measuring SCFs predicting the occurrence of RTCs in drivers. METHODS: This exploratory sequential mixed method was carried out in three phases. In phases 1 and 2, an initial items pool was created based on systematic literature review (phase1), and semi structured interviews (phase 2). In phase 3, the initial scales were validated using face and content validities. Then, principal component analysis and confirmatory factor analysis were performed to assess the construct validity. Finally, the reliability of the scale was evaluated by examining internal consistency and stability. RESULTS: The scale content validity index was 0.92. Principal component analysis showed seven factors with 27 items, which explain 55.56% of the total variance. In confirmatory factor analysis, model fit indices were satisfactory. Discriminant analysis was also able to distinguish between two groups of accident-involved drivers and accident-free drivers (P less than 0.0001). The reliability of the scale by Cronbach's alpha, Theta, Omega and intra-class correlation coefficients was 0.82, 0.96, 3.07, and 0.80, respectively. CONCLUSIONS: This scale can be used as a valid and reliable scale to evaluate the SCFs predicting the occurrence of RTCs in drivers. Furthermore, the findings of this study will be useful in identifying and planning to reduce RTCs, especially in accident-prone drivers.

Lessons Learned From a Chlorine Gas Leakage in Dezful City, Iran.

Dezful is the capital of Dezful County, a city in Khuzestan Province, Iran. On August 12, 2017, after a chlorine gas leakage in Dezful, more than 475 people were affected by chlorine gas, and they all suffered from respiratory complications. A lot of problems were encountered in the preparation of the relief forces and organization of the blueprint on how to respond to the incident, such as lack of knowledge on establishment of danger zone, lack of warning system, lack of proper triage and absence of decontamination plans, lack of special chemical safety outfit and respiratory equipment for rescuers, lack of instructions for proper handling, lack of knowledge in dealing with this type of disaster, and inappropriate evacuation skills and failure to cordon off and insure the location of the incident. Although the initial measures to arrest this crisis was performed based on the health system's instructions of the country with regard to all the possible risks, lack of a comprehensive inter-organizational program and prevention plans, lack of control plans, lack of adequate preparation and response to chemical poisoning, lack of foresight, lack of a risk plan, and lack of an intervention plan for these incidents were the reasons for the damages and problems encountered after the crisis.