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A comparison of handheld and standard ultrasound in Swiss medical students

World Journal of Emergency Medicine 2022年第2期13卷 85-90页

作者： Mark Slader Hayley Young Margot Barker Kylie Prentice Katherine Bogaard Charlene Yuan soheil saadat Shadi Lahham School of Medicine University of CaliforniaIrvine 92617USA Department of Emergency Medicine University of CaliforniaIrvine 92868USA

BACKGROUND:The use of ultrasound(US)within healthcare has inspired the development of new US *** have been few studies comparing the use of handheld US to standard US for medical *** research aims to determine whether a handheld US device can provide a comparable primary learning experience to that of a standard US ***:Over two days of instruction,participants were taught and evaluated on core US *** standard group received instruction on standard US machines,while the handheld group received instruction on handheld US *** completed a qualitative survey regarding their *** hundred and four images were obtained and graded by two emergency medicine ***:A total of 119 Swiss medical students were enrolled in our *** was no statistically significant difference in the US assessment measurements,except for faster endpoint septal separation(EPSS)vascular setup time in the handheld group(P=0.001).There was no statistically significant difference in participants’perceived difficulty of US learning(P=0.198),comfort level(P=0.188),or self-estimated capability to perform US in the future(P=0.442).There was no statistically significant difference in the percentage of correctly obtained images(P=0.211)or images that were clinically useful(P=0.256).The median quality score of images obtained by the standard group was eight compared to seven in handheld group(P<0.01).CONCLUSION:Our data suggest a handheld US machine can perform as well as a standard US machine as an educational tool despite sacrifices in image quality.

关键词： Handheld ultrasound Ultrasound education Switzerland Medical education

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Effects of excitation frequency on detection accuracy of orthogonal wavelet decomposition for structural health monitoring

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Earthquake Engineering and Engineering Vibration 2004年第1期3卷 101-106页

作者： Raul J.Alonso Mohammad Noori soheil saadat Arata MasudaDepartment of Mechanical and System Engineering Kyoto Institute of Technology Matsugasaki Sakyo-ku Mechanical Engineering & Eleetro Optical Systems-MS 368 1362 Brass Mill Road Department of Mechanical & Aerospace Engineering North Carolina State University

Accurate estimation of stiffness loss is a challenging problem in structural health *** this studyorthogonal wavelet decomposition is used for identifying the stiffness loss in a single degree of freedom *** effects of excitation frequency on accuracy of damage detection is *** show that pseudo-aliaseffects caused by the orthogonal wavelet decomposition(OWD),affect damage *** is demonstrated that theproposed approach is sunable for damage detection when the excitation frequency is relatively *** study shows how apriori knowledge about the signal and ability to control the sampling frequency can enhance damage detectability.

关键词： wavelet analysis damage detection structural health monitoring

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Comparison of road traffic fatalities and injuries in Iran with other countries

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Chinese Journal of Traumatology 2008年第3期11卷 131-134页

作者： Mohammad R Rasouli Mohsen Nouri Mohammad-Reza Zarei soheil saadat Vafa Rahimi-Movaghar Trauma and Surgery Research Center Sina HospitalMedical Sciences/University of Tehran Tehran Iran

Objective： To compare fatalities and injuries in road traffic crashes （RTC） in Iran with other countries. Methods： Data were obtained from national health sources of Iran. These data included population number, registered motor-vehicles number, number of RTCs and consequent fatalities and injuries from 1997 to 2006. Results： RTC fatality and injury rates increased from 1997 to 2005, but decreased in 2006. The overall men/women ratio in the RTC fatalities was 4.2：1. High RTC fatality rate of 39 per 100 000 population in Iran was almost the same as some other developing countries. In Iran, RTC fatalities in recent years were almost twice as much as the highest rate among the European countries. Conclusions： This investigation shows that in spite of reduction of RTC fatality in Iran in 2006, it is still one of the highest in the world. Moreover, this paper describes the state of RTC-related parameters in a developing country in comparison with the developed countries.

关键词： Accidents, road traffic Fatality Wounds and injuries Iran World

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Establishment of a regional multicenter traumatic spine fracture/dislocation registry

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Chinese Journal of Traumatology 2014年第4期17卷 235-238页

作者： Vafa Rahimi-Movaghar soheil saadat Saba Jafarpour Department of Neurosurgery Shariati Hospital Tehran University of Medical Sciences Tehran Iran Sina Trauma and Surgery Research Center Tehran University of Medical Sciences Tehran Iran Sina Trauma and Surgery Research Center Tehran University of Medical Sciences Tehran Iran

Objective：Trauma is one of the leading causes of mortality and morbidity in adults and a major contributor to health care *** spine-related injuries constitute a small proportion of trauma cases,they need special consideration due to poor functional outcomes and substantial *** relatively extensive previous studies on traumatic spinal injuries,there is still obscurity in some aspects of the *** purpose of this study is to establish a regional multicenter traumatic spine fracture/dislocation ***：This is a prospective case series study,including all patients with acute traumatic spine lesions admitted to a regional multicenter since *** is extracted based upon a form developed by Sina Trauma and Surgery Research Center,Tehran University of Medical Sciences,Tehran,*** electronic data entry software is initiated and data will be entered to the *** remains confidential and security considerations will be taken based on standards of data entry ***：The results of this study will include age and gender distribution of the patients,causes of injury,location of pain and neurological deficit,the American Spinal Injury Association score and Frankel grade on admission,at discharge,after 6 and 12 months and at the latest annual follow-up,radiologic findings,details of operative procedures and methods of external ***：This study will identify prognostic factors that influence the ultimate fate of spine fracture patients and determine short and long-term outcome of different treatment *** can lead to a considerable improvement in patient care and will have a great national and transnational impact.

关键词： Spinal fractures Registries Spinal injuries Prospective studies

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Epidemiology and short-term mortality in traumatic patients admitted to Shariati Hospital in Iran between 2012 and 2013

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Chinese Journal of Traumatology 2015年第5期18卷 275-278页

作者： Sima Sheikhghomi Vafa Rahimi-Movaghar Saba Jafarpour soheil saadat Iron University of Medical Sdences Tehran 11365-3876 Iran Sina Trauma and Surgery Research Center Tehran University of Medical Sciences Tehran 11365-3876 lran Department of Neurology Boston Children's Hospital Harvard Medical School 1 Autumn St Boston MA 02115 United States

Purpose： Trauma is an inevitable part of the health burden in every country. Both the preventive and rehabilitative aspects of traumatic injuries are expensive. Since most of the injuries happen in low- and middle-income developing countries, a judicious allocation of the limited resources to the most cost- efficient strategies is necessary. The present study was designed to report the causes of trauma, injured body regions, trauma severity scores and the one year survival rate of a randomly selected sample of trauma patients in a major referral hospital in Tehran, Iran. Methods： We chose and analyzed a random subgroup of traumatic patients admitted during the one- year period of May 2012 to May 2013 to Shariati Hospital, a major University Teaching Hospital in Tehran, Iran. Patients who stayed at the hospital for less than 24 h were excluded. In total, 73 traumatic patients were registered. The mean age was （40.19 ＋ 20.34） years and 6Z1% of them were male. Results： In general, the most common cause of injury was falls （47.9%）, followed by road traffic crashes （RTCs, 40.8%）. Assault and exposure to inanimate mechanical forces each were only associated with 5.6% of all injuries. The only cause of injury in ages of more than 65 years was fall. The most common cause of injury in ages between 15 and 45 years was RTCs. During the study, two deaths occurred： one was at ICU and the other was at home. The most commonly injured body region was the head （23.8%）, followed by the elbow and forearm （19%）, hip and thigh （15.9%）, and multiple body regions （14.3%）. The mean abbreviated injury score was 2.23 ± 1.02; injury severity index was 7.26 ± 7.06; and revised trauma score was 7.84, calculated for 38 patients. Conclusion： Prevention strategy of traumatic injury should focus on falls and RTCs, which are respec- tively the most common cause of trauma in older aged people and young males.

关键词： Accidents Traffic Epidemiology Iran Body regions Complications

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Spatial analysis of driving accidents leading to deaths related to motorcyclists in Tehran

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Chinese Journal of Traumatology 2019年第3期22卷 148-154页

作者： soheil saadat Khaled Rahmani Ali Moradi Salah ad-Din Zaini Fatemeh Darabi Sina Trauma and Surgery Research Center Tehran University of Medical SciencesTehranIran Social Determinants of Health Research Center Research Institute for Health DevelopmentKurdistan University of Medical SciencesSanandajIran Health Deputy Hamadan University of Medical SciencesHamadanIran Crashes Office Tehran's Traffic PoliceTehranIran Asadabad School of Medical Sciences AsadabadIran

Purpose: Traffic accidents are one of the main causes of death and disability, causing annual deaths of 1.23 million and tens of millions injured people worldwide. Meanwhile, a significant proportion of the deaths and injuries caused by traffic accidents occur among motorcyclists. According to the world health organization's 2015 report, about 25% of deaths from traffic accidents occur in motorists. In Iran, a significant proportion of deaths and injuries result from traffic accidents among motorcyclists, especially in passages within the cities. According to traffic police, about 25% of deaths and 50% of injuries in traffic accidents of Tehran are reported among motorcyclists. Therefore, due to the importance of this issue, the spatial factors influencing the incidence of motorcycle-related accidents in Tehran were investigated using the geographic information system. Methods: The present work was a cross-sectional and descriptive analysis study. The data necessary for the study were extracted from Tehran traffic police as well as municipality databases. Zoning maps were used to display the distribution of events. In the analytical investigation, Moran index was used to determine the distribution pattern of the events, while Getis-Ord G^* statistics were applied to analyze hot spots. To investigate the role of regional and environmental factors in the frequency of traffic accidents related to motorcyclists in geographic units (Tehran 22 districts), Poisson regression and negative binomial models were used. The geographically weighted regression (GWR) model was used to analyze the relationship between environmental factors and the location of these events. Statistical analyses were performed using SPSS, STATA, ARC-GIS and GWR software. Results: The southern and eastern margins of Tehran are the most vulnerable areas in terms of deaths related to traffic accidents of motorcyclists. Highways are considered the location of most traffic accidents which lead to death of

关键词： Traffic accidents Motorcyclists Geographic information system Environmental factors

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Situation analysis of trauma based on Arizona trauma center standards in university hospitals of Tehran, Iran

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Chinese Journal of Traumatology 2009年第5期12卷 -页

作者： Mahdi Sharif-Alhoseini Aliashraf Eghbali Vafa Rahimi-Movaghar soheil saadat Sina Trauma and Surgery Research Center Sina Hospital Tehran University of Medical Sciences Tehran 11365-3876 Iran

Objective: Injuries are common and important problem in Tehran, capital of Iran. Although therapeutic centers are not essentially established following the constructional principles of developed countries, the present opportunities and equipments have to be used properly. We should recognize and reduce the deficits based on the global *** study deliberates the trauma resources and capacities in university hospitals of Tehran based on Arizona trauma center standards, which are suitable for the assessment of trauma ***: Forty-one university hospitals in Tehran were evaluated for their conformity with "Arizona trauma center standards" in 2008. A structured interview was arranged with the "Educational Supervisor" of all hospitals regarding their institutional organization, departments, clini-cal capabilities, clinical qualifications, facilities and resources, rehabilitation services, performance improvement, continuing education, prevention, research and additional requirements for pediatric trauma patients. Relative frequencies and percentages were calculated and Student's t test was used to compare the mean ***: Forty-one hospitals had the average of 77.7 (50.7%) standards from 153 Arizona trauma center standards and these standards were present in 97.5 out of 153 (63.7%) in 17 general hospitals. Based on the subgroups of the standards, 64.8% items of hospital resources and capabilities were considered as a subgroup with the maximum criteria, and 17.7% items of research section as another subgroup with the minimum ***: On the basis of our findings, no hospital meet all the Arizona trauma center standards completely. The hospitals as trauma centers at different levels must be promoted to manage trauma patients desirably.

关键词： Trauma centers Hospitals Iran Arizona Reference standards

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Blunt Traumatic Cervical Spine Fractures in Iran

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Surgical Science 2011年第8期2卷 407-413页

作者： soheil saadat Aliashraf Eghbali Alexander R. Vaccaro Mahdi Sharif-Alhoseini Vafa Rahimi-Movaghar 不详

Background: Blunt traumatic cervical spine fractures (TCSF) are serious injuries which may be associated with considerable mortality and morbidity. We describe the epidemiology of blunt traumatic cervical spine fracture in Iran over a definable time period. Methods: In a cross-sectional study, the data including the distribution of TCSF, demographics, mechanisms, abbreviated injury scale (AIS), spinal cord associated injuries and final outcome of patients, was extracted from the Iranian national trauma registry database in target hospitals in eight major cities of Iran from 1999 to 2004. The Chi square test was used to compare mortality and one-way ANOVA was used to compare ISS amongst the categories of TCSF. Results: TCSF was identified in 120 cases, of these 70.8% were male. Their mean age was 36.6 ± 17.2 years. The overall incidence of TCSF among all trauma patients was 0.7% (95%CI: 0.61% - 0.88%). The TCSF incidence among all spine fractured patients was 19.38% (95%CI: 16.34% - 22.72%). The most common mechanism of TCSF was a motor vehicle collision (66.7%). The overall percentage of in-hospital death for TCSF was 12.6%. There were no statistically significant difference in death and injury severity scores (ISS) among TCSF categories (p > 0.05). Spinal cord and root injuries occurred in 34.9% and 2.4% of TCSF, respectively. Conclusions: Preventive strategies need to be developed in order to reduce the number and severity of TCSF in the general Iranian population.

关键词： Cervical Spine Fractures Iran Motor Vehicle Crash Trauma

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Effect of mild head injury on intelligence in Zahedan, Iran

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Chinese Journal of Traumatology 2010年第6期13卷 345-348页

作者： Mohammad Hadi Shorooei Mahdi Sharif-Alhoseini soheil saadat Arya Sheikh-Mozaffari Vafa Rahimi-Movaghar Khatam-ol-Anbia Hospital Zahedan University of Medical Sciences Zahedan Iran Sina Trauma and Surgery Research Center Sina Hospital Tehran University of Medical Sciences Tehran11365-3876 Iran

Objective： To investigate the effects of mild head injury （HI） on the victims＇ intelligence by measuring their intelligence quotient （IQ）.Methods： This cohort study was performed in Khatamol-Anbia Hospital, Zahedan, Iran and the IQs of 30 mild HI patients were measured right after the injury （IQ0） and six months later （IQ6）. The IQs of 90 close relatives of the patients were also measured at the same period of time as the non-exposure group. The IQs were measured with Wechsler adult intelligence scale-revised （WAIS-R）. The IQ0, IQ6 and their differences （IQ change） were compared in HI patients and their relatives using the Student＇s t ***： The mean IQ0 of the HI patients was similar to their relatives. The IQ6 of HI patients appeared to be less than those of their relatives. Moreover, the IQ6 of the HI patients appeared to be less than their initial scores. HI was associated with more decrease in IQ6 compared with IQ0and the female subjects showed more decrease in IQ6 compared with their ***： HI seems to be associated with decrease in IQ six months after the injury and it is more evident in female HI patients.

关键词： Intelligence tests Head injuries, closed Wechsler scales Glasgow coma scale

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Assessment of mechanism, type and severity of injury in multiple trauma patients： A cross sectional study of a trauma center in Iran

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Chinese Journal of Traumatology 2017年第2期20卷 75-80页

作者： Hamidreza Reihani Hossein Pirazghandi Ehsan Bolvardi Mohsen Ebrahimi Elham Pishbin Koorosh Ahmadi Mahdi Safdarian soheil saadat Vafa Rahimi-Movaghar Emergency Medicine Department Imam Reza Hospital Mashhad University of Medical Sciences Mashhad Iran Emergency Medicine Department Shahid Beheshti Hospital Sabzevar University of Medical Sciences Sabzevar Iran Department of Emergency Medicine Alborz University of Medical Sciences Karaj Iran Sina Trauma and Surgery Research Center Tehran University of Medical Sciences Tehran Iran

Purpose： To accurately assess the mechanism, type and severity of injury in Iranian multiple trauma patients of a trauma center. Methods： Patients with multiple traumas referring to the emergency department of Hasheminejad University Hospital in Mashhad, lran, entered this cross sectional study from March 2013 to December 2013. All the patients with injury severity score （ISS）〉 9 were included in this study. Data analysis was performed by SPSS software （Version 11.5） and P values less than 0.05 were considered as significant differences. Results： Among the 6306 hospitalized trauma patients during this period, 148 had ISS〉9. The male fe- male ratio was 80%. The mean age of the patients was （33.5 m 19.3） years. And 71% of the patients were younger than 44 years old. There were 19 （13%） deaths from which 68.5% were older than 44 years old. The mean transfer time from the injury scene to hospital was （55 e 26） minutes. The most frequent mechanisms of injury were motorcycle crashes and falling from height, which together included 66.2% of all the injuries. A total of 84% of hospital deaths occurred after the first 24 h of hospitalization. Head and neck were the most common body injured areas with a prevalence of 111 cases （75%）. Conclusion： Motorcycle crashes have high frequency in lran. Since most victims are young males, injury prevention strategies should be considered to reduce the burden of injuries.

关键词： Accidents trafficInjury severity scoreWounds and injuriesIran

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