Epidemiological Features of Injured Patients Examined by Tehran Emergency Medical Service Technicians

Introduction: Knowledge of epidemiological aspects can be a useful guide in determining the resources for better prevention and management of injuries. There are some performed studies on this topic in Iran, based on the limited hospital database. However, to the best of our knowledge, there is not any survey based on the pre-hospital database. Objective: The purpose of this study was to assess baseline characteristics of the traumatic patients according to the records of Tehran Emergency Medical Service (EMS) Center to present descriptive statistics of their epidemiological features. Method: This cross-sectional study was conducted retrospectively, using Tehran EMS center data registry. All traumatic patients examined by EMS in Tehran, Iran following call to emergency medical dispatcher were included. By reviewing the EMS technicians’ mission forms, required data were extracted. The mission form contains information such as age, sex, injured location, damage mechanism, accident location (home, workplace, street), time of call, the outcome of the patient's ambulance mission and the results of the assessment of the technician, etc. Results: Totally, 56612 injured cases with the mean age of 33.1±15.6 years were examined by EMS during one-year study period of whom 80.4% were male. Crude Incidence Rate was 10.5 and 2.5 per 1000 in male and female, respectively. Traffic accident and then fall were the two most prevalent mechanism of injuries. All types of  injuries were significantly more prevalent in males (P<0.001). Most injuries were in winter season with 15570 cases (27.5%). Car accident was prevalent in winter and other injuries were significantly prevalent in spring (P<0.001). The most frequent places of injuries occurred on main roads and streets (55.7%). All of the road-related injuries was prevalent in winter, whereas injuries in other places were prevalent in spring (P<0.001). Most of the cases (78.3%) were transferred to the health centers, but 20.7% did not consent to treatment and transmission. Only 222 cases (0.4%) died, that 95% was due to traffic accident. there was a significant relationship between the number of injured organs and the death; So that the highest death rate occurred for those with more than 5 injured organs (P <0.001). Conclusion: Based on the findings, traffic accident was the most frequent cause of trauma that led to visiting a traumatic patient by an EMS technician in Tehran, Iran. Injuries in all age groups were more prevalent in males, and the involvement of 5 or more injured organ had a significant relationship with mortality

Seven Criteria of Severe COVID-19 (SCSC): A New Pre-Hospital Prognostic Scoring Tool Suggested for Screening of Probable/Confirmed COVID-19 Patients with Severe Outcomes

Introduction: COVID-19 pandemic led to various consequences in medical care that had been long provided for the patients referred to the hospitals. Objective: We conducted this study to derive and validate a new scoring system that can accurately differentiate COVID-19 patients who may have a worse outcome from others at the prehospital stage. Methods: This study was performed on probable/confirmed COVID-19 patients, who were transferred to the hospitals by Tehran emergency medical services (EMS). Occurrence of one of the items including: in-hospital death, intensive care unit (ICU) admission, or hospitalization for more than 20 days was considered to indicate a “severe disease”. Univariate and multivariate logistic regression were used for assessment of the relationship between all independent variables and the outcome. In the validity assessment step, area under the receiver operating characteristic (ROC) curve was calculated for a data set independent from the data based on which the model was designed. The sensitivity and specificity were also presented based on the best suggested cut-off point. Results: In this study, the data of 557 cases were analyzed in the derivation step and 356 cases were assessed in the validation step. The univariate logistic regression showed that age, weakness and fatigue, disease history, systolic blood pressure, SpO2, respiratory rate, and Glasgow coma scale (GCS) were statistically significant in severe disease group. The area under the ROC curve (AUC-ROC) of the tool was 0.808 (95% CI: 0.779, 0.834). The best cut-off point for screening was the score of ≥4, in which the sensitivity and specificity of the tool for the best cut-off point were 71.87% and 78.06%, respectively. In the validation step, the AUC-ROC of the tool was 0.723. Conclusions: Seven criteria of severe COVID-19 (SCSC) tool could properly differentiate probable/confirmed COVID-19 patients with severe outcomes in the pre-hospital stage

Frequency and types of workplace violence against emergency medical technicians: a cross-sectional study in Tehran, Iran

Objective: This study was implemented to assess various types of violent incidents involving emergency medical technicians (EMTs) working in Tehran, Iran. Furthermore, the characteristics of violent people and possible causes of their violence were assessed. Methods: In this cross-sectional study, 500 EMTs working in the capital city of Tehran were randomly invited. The participants were asked to fill out a questionnaire of workplace violence. Univariate and multivariate logistic regression were also performed for identifying the possible risk factors of violence. In addition, the distribution and association of violence patterns were also analyzed considering demographic features and characteristics of violent people. Results: In total, 320 EMTs with the mean age of 31.8 ± 6.7 years participated, 315 (98.4%) of whom were men. Overall, 279 (87.2%) out of the 320 participants experienced 654 episodes of violence, mostly bullying, in the last 4 months. The relationship between the level of education and experiencing violent incidents was statistically significant (p=0.035). Also, non-Persian EMTs had experienced significantly more violent behaviors than Persian EMTs [171 (91.0%) vs. 108 (81.8%); p=0.016]. Nonetheless, the prevalence of violent incidents was not significantly correlated with marital status, years of work experience, employment situation, and working hours. The odds of facing violent behavior among EMTs with associate degree was 2.9 times higher than those with technical diploma (p=0.048). Furthermore, the odds of experiencing violence among non-Persian EMTs was 2.2 times higher than Persian EMTs (p=0.039). Conclusion: We found that EMTs had faced numerous episodes of violence in their workplace, especially verbal threats, which were more prevalently committed by patients’ relatives during night shifts

Necessary Indicators for Developing a Hazmat Response Team of the Iranian Health System

Introduction: Although some countries have set up predetermined programs and specialized teams to deal with hazardous materials (Hazmat) induced events, in other countries including Iran there are many weaknesses in this regard. Objective: We aimed to develop the necessary indicators for the formation of teams to deal with Hazmat accidents in the health system based on existing standards and resources as well as the indigenous conditions of Iran. Methods: This cross-sectional study was carried out in two stages from 2018 to 2020.  In the first stage, the literature review was performed and the current guidelines, standards, and models presented in other countries were reviewed and related items were extracted. In the second stage, semi-structured and purposeful interviews by managers and physicians specialized in Hazmat incidents working in Iran, were conducted. The interviews were recorded and later the recordings were transcribed and simultaneously the categorizing and coding of the interviews were performed. Results: In the first stage, searching through the available resources for the present study identified 12 published references through which 10 indicators to develop a Hazmat team were ultimately extracted. In the second stage, a total of 10 interviews were conducted and data saturation occurred. Based on the results of the content analysis for the main indicators of designing and developing teams, 8 categories and 19 sub-categories were developed. Conclusions: By interviewing and localizing the 10 main indicators that were achieved in the first stage, we finally reached the 8 indicators including: Training hazmat team’s members, required equipment for team, response plan, medical surveillance program, hazmat team structure, incident command system, hazmat team qualification of different levels, certification and maintenance of the certificate

The Role of Pre-Hospital Telecardiology in Reducing the Coronary Reperfusion Time; a Brief Report

Objective: The determination of pre-hospital triage based on electrocardiogram and telecardiology in shortening the initial angioplasty time in patients with ST segment elevation myocardial infarction (STEMI) treated with PCI. Methods: This cross-sectional study was conducted from September 2015 to January 2018 in six hospitals equipped with 24-hour angioplasty facilities in Tehran, Iran. Patients referred to the hospital with a diagnosis of STEMI by Emergency Medical Services (EMS) and undergoing primary angioplasty in the equipped centers were included. Patients were divided into two groups: 1) Patients who were transferred to Cath Lab after electrocardiography (ECG) and telecardiology by EMS (EMS247 group); 2) Patients who did not have ECG and telecardiology in the ambulance and were transferred to the emergency department. Results: A total of 1205 people with the mean age of 58.99 ± 12.33 years (19-95 years) entered the study of whom 996 (82.65%) were male. Of these, 841 (69.8%) patients were transmitted via EMS, who have a 12-lead ECG carried out in the ambulance and after consultation with the cardiologist emphasizing the need for direct transmission to the angioplasty for PPCI. In the study, time interval of Symptom-to-device in the EMS247 group was less than the EMS routine group (P = 0.001). There was a similar finding about the time interval of First medical contact (FMC) to device. Mean differences of interval time in two groups were 100.4 and 22.5 min for symptom-to-Device and FMC-to-Device, respectively. Conclusions: It is likely that the use of telecardiology in prehospital triage plays an important role in reducing time of PPCI for patients with acute myocardial infarction with ST segment elevation

The Possible Factors Correlated with The Higher Risk of Getting Infected by COVID-19 in Emergency Medical Technicians; A Case-Control Study

Objective: To assess the possible factors associated with increasing risk of COVID-19 among EMTs. Methods: This study was a case-control study conducted in Tehran, Iran. Case group was consisted of confirmed COVID-19 EMTs based on the results of reverse transcriptase polymerase chain reaction and/or lung computed tomography scan. Healthy EMTs were randomly selected as control group. Patients were asked to fill out a checklist including demographic data, data related to the work situation (such as number of missions and type of mask and cloth) and PPE precautions. Results: Sixty-eight patients and 148 healthy persons took part in this study as case and control group, respectively. Having two EMTs involved directly in taking care of patients (p <0.001) and working with a confirmed case teammate (p <0.001), considering the precautions such as seal check after wearing the mask (p=0.015), covering the hair with a medical hat (p <0.001), not using personal items despite protective clothing (p <0.001), and avoiding contact with the outer surface of clothing while removing (p <0.001) had significant difference in two groups. Conclusion: We found that the type and method of use of PPE were correlated with the increasing risk of COVID-19 in EMTs. Also, we found that when two EMTs were involved directly in taking care of the patients, and those who worked with a confirmed case teammate, more frequently affected

Comparison of three methods of cardiopulmonary resuscitation training in terms of improving the skills of emergency medical technicians; a pretest–posttest study

Objective: There are several methods for teaching emergency medical technicians (EMTs) cardiopulmonary resuscitation (CPR); but choosing the most effective option depends on several factors. This study was designed to compare the effectiveness of three different CPR training methods, including traditional, peer, and virtual methods, for EMTs.&nbsp;Methods: This study was a pretest-posttest study, which was performed from March to September 2020 in Tehran, Iran. Participants were EMTs working in the operations department of the EMS center. In the first step, for the pretest evaluation, an Objective Structured Clinical Evaluation (OSCE) exam was held for all participants. Thereafter, the subjects were divided into 3 groups including master-centered traditional collective education, peer training, and virtual courses. Then the participants underwent educational intervention and after that, another OSCE exam was held about 1 week after the sessions to evaluate the effect of interventions.&nbsp;Results: At first, 156 volunteers entered the study and participated in the pretest OSCE exam, of which 125 volunteers participated in the posttest OSCE exam. Of these, 51 volunteers participated in the peer education group, 35 volunteers were in the virtual education group, and 39 volunteers in the classic education group. The mean score of the participants in all 4 assessed skills, including endotracheal intubation, laryngeal mask airway insertion, basic life support, and advanced life support, increased significantly after educational intervention in all 3 groups (p&lt;0.05); and this increase was higher in the virtual group compared to the other two groups (p&lt;0.05).&nbsp;Conclusion: We found that virtual training was more effective than classic and peer training for CPR training of EMTs

Iranian Emergency Medical Service Response in Disaster; Report of three Earthquakes

 Introduction: The earthquake is one of the most natural catastrophic crises that can cause a lot of casualties. Considering an earthquake-prone country, Iran is ranked as one of the world's most dangerous countries. Objective: In this article, we describe the actions taken by emergency medical service (EMS) after the earthquake in Kermanshah, Varzaghan, and Bam and compared the strengths and weaknesses of the emergency response program and the limitations and challenges of this system in dealing with these major crises. Method: This study is a cross-sectional study that compares some of the information and findings related to three earthquakes that occurred in Iran, including Bam, Varzaghan and Sarpol-e-Zahab earthquakes. The data reported in the present article is descriptive and is based on various independent sources such as National Emergency Operation Center, Local Emergency Operations Center (EOC), the EMS of the country, the World Health Organization, the United Nations, the statistics website, the Forensic Data website, the International Institute of Seismology and Earthquake Engineering, conferences and personal interviews. To ensure the credibility of the information, the authors reported data that had been verified by two or more sources. Results: The characteristics of the geographic area of the 3 earthquakes has been described. Post-earthquake response activities were described in details in subheadings including rapid warning and response, surge capacity plan, rapid response teams, emergency medical teams, increasing the capacity of health facilities, increasing transfer capacity, and handling, transportation and distribution of injuries. Conclusion: In the recent earthquake, had been occurred in Sarpol-e-Zahab, the health response of the country was largely satisfactory. The existence of structures such as EOC at various levels, the unified incident command system, emergency operations plan, and Medical Care Monitoring Center are among the most important reasons for satisfactory performance

How the COVID-19 Epidemic Affected Prehospital Emergency Medical Services in Tehran, Iran

Introduction: Coronavirus disease 2019 (COVID-19) has substantially impacted the healthcare delivery system in Tehran, Iran. The country’s first confirmed positive test for severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) was on February 18, 2020. Since then, the number of cases has steadily increased in Iran and worldwide. Emergency medical services (EMS) quickly adapted its operations to accommodate a greater number of patients, and it worked to decrease the risk of COVID-19 spread among EMS personnel, given the disease’s high transmissibility.Methods: We evaluated the chief complaint as well as the pattern and number of EMS calls and dispatches during the 28-day intervals before and after the February 18, 2020, COVID-19 outbreak in Iran.Results: EMS calls increased from 355,241 in the pre-outbreak period to 1,589,346 in the post-outbreak period, a 347% increase (p&lt;0.001). EMS dispatches rose more modestly from 82,282 to 99,926, a 21% increase (p&lt;0.001). The average time on telephone hold decreased from 10.6 ± 12.7 seconds pre-outbreak to 9.8 ± 11.8 seconds post-outbreak, a 7% decrease (p&lt;0.001). The average length of call also decreased from 1.32 ± 1.42 minutes pre-outbreak to 1.06 ± 1.28 minutes post-outbreak, a 20% decrease (p&lt;0.001). The highest number of daily dispatches occurred during the second and third weeks of the four-week post-outbreak period, peaking at 4557 dispatches/day. After the first reported case of SARS-CoV-2, there were significant increases in chief complaints of fever (211% increase, p&lt;0.001) and respiratory symptoms (245% increase, p&lt;0.001).Conclusion: The number of EMS calls and dispatches in Tehran increased 347% and 20%, respectively, after the outbreak of COVID-19. Despite this, the time on hold for EMS response decreased. The Tehran EMS system accomplished this by increasing personnel hours, expanding call-center resources, and implementing COVID-19-specific training

How the COVID-19 Epidemic Affected Prehospital Emergency Medical Services in Tehran, Iran

Introduction: Coronavirus disease 2019 (COVID-19) has substantially impacted the healthcare delivery system in Tehran, Iran. The country’s first confirmed positive test for severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) was on February 18, 2020. Since then, the number of cases has steadily increased in Iran and worldwide. Emergency medical services (EMS) quickly adapted its operations to accommodate a greater number of patients, and it worked to decrease the risk of COVID-19 spread among EMS personnel, given the disease’s high transmissibility.Methods: We evaluated the chief complaint as well as the pattern and number of EMS calls and dispatches during the 28-day intervals before and after the February 18, 2020, COVID-19 outbreak in Iran.Results: EMS calls increased from 355,241 in the pre-outbreak period to 1,589,346 in the post-outbreak period, a 347% increase (p&lt;0.001). EMS dispatches rose more modestly from 82,282 to 99,926, a 21% increase (p&lt;0.001). The average time on telephone hold decreased from 10.6 ± 12.7 seconds pre-outbreak to 9.8 ± 11.8 seconds post-outbreak, a 7% decrease (p&lt;0.001). The average length of call also decreased from 1.32 ± 1.42 minutes pre-outbreak to 1.06 ± 1.28 minutes post-outbreak, a 20% decrease (p&lt;0.001). The highest number of daily dispatches occurred during the second and third weeks of the four-week post-outbreak period, peaking at 4557 dispatches/day. After the first reported case of SARS-CoV-2, there were significant increases in chief complaints of fever (211% increase, p&lt;0.001) and respiratory symptoms (245% increase, p&lt;0.001).Conclusion: The number of EMS calls and dispatches in Tehran increased 347% and 20%, respectively, after the outbreak of COVID-19. Despite this, the time on hold for EMS response decreased. The Tehran EMS system accomplished this by increasing personnel hours, expanding call-center resources, and implementing COVID-19-specific training