Preventability of vehicle-related fatalities

Are Pre-hospital Trauma Deaths Preventable? A Systematic Literature Review

BACKGROUND

The first and largest peak of trauma mortality is encountered on the trauma site. The aim of this study was to determine whether these trauma-related deaths are preventable. We performed a systematic literature review with a focus on pre-hospital preventable deaths in severely injured patients and their causes.

METHODS

Studies published in a peer-reviewed journal between January 1, 1990 and January 10, 2018 were included. Parameters of interest: country of publication, number of patients included, preventable death rate (PP = potentially preventable and DP = definitely preventable), inclusion criteria within studies (pre-hospital only, pre-hospital and hospital deaths), definition of preventability used in each study, type of trauma (blunt versus penetrating), study design (prospective versus retrospective) and causes for preventability mentioned within the study.

RESULTS

After a systematic literature search, 19 papers (total 7235 death) were included in this literature review. The majority (63.1%) of studies used autopsies combined with an expert panel to assess the preventability of death in the patients. Pre-hospital death rates range from 14.6 to 47.6%, in which 4.9-11.3% were definitely preventable and 25.8-42.7% were potentially preventable. The most common (27-58%) reason was a delayed treatment of the trauma victims, followed by management (40-60%) and treatment errors (50-76.6%).

CONCLUSION

According to our systematic review, a relevant amount of the observed mortality was described as preventable due to delays in treatment and management/treatment errors. Standards in the pre-hospital trauma system and management should be discussed in order to find strategies to reduce mortality.

Road traffic collisions in Malawi: Trends and patterns of mortality on scene

Background

Worldwide, 90% of injury deaths occur in low- and middle-income countries (LMIC). Road traffic collisions (RTCs) are increasingly common and result in more death and disability in the developing world than in the developed world. We aimed to examine the pre-hospital case fatality rate from RTCs in Malawi.

Material and Methods

A retrospective study was performed utilizing the Malawian National Road Safety Council (NRSC) registry from 2008–2012. The NRSC data were collected at the scene by police officers. Victim, vehicle, and environmental factors were used to describe the characteristics of fatal collisions. Case fatality rate was defined as the number of fatalities divided by the number of people involved in RTCs each year. Logistic regression analysis was used to determine predictors of crash scene fatality.

Results

A total of 11,467 RTCs were reported by the NRSC between 2008 and 2012. Of these, 34% involved at least one fatality at the scene. The average age of fatalities was 32 years and 82% were male. Drivers of motor vehicles had the lowest odds of mortality following RTCs. Compared to drivers; pedestrians had the highest odds of mortality (OR 39, 95% CI 34, 45) followed by bicyclists (OR 26, 95% CI 22, 31). The average case fatality rate was 17% /year, and showed an increased throughout the study period.

Conclusions

RTCs are a common cause of injury in Malawi. Approximately one-third of RTCs involved at least one death at the scene. Pedestrians were particularly vulnerable, exhibiting very high odds of mortality when involved in a road traffic collision. We encourage the use of these data to develop strategies in LMIC countries to protect pedestrians and other road users from RTCs.

Significant acceleration of emergency response using smartphone geolocation data and a worldwide emergency call support system

Importance

When patients are disorientated or experience language barriers, it is impossible to activate the emergency response system. In these cases, the delay for receiving appropriate help can extend to several hours.

Objectives

A worldwide emergency call support system (ECSS), including geolocation of modern smartphones (GPS, WLAN and LBS), was established referring to E911 and eCall systems. The system was tested for relevance in quickly forwarding abroad emergency calls to emergency medical services (EMS).

Design

To verify that geolocation data from smartphones are exact enough to be used for emergency cases, the accuracy of GPS (global positioning system), Wi-Fi (wireless LAN network) and LBS (location based system) was tested in eleven different countries and compared to actual location. The main objective was analyzed by simulation of emergencies in different countries. The time delay in receiving help in unsuccessful emergency call cases by using the worldwide emergency call support system (ECSS) was measured.

Results

GPS is the gold standard to locate patients with an average accuracy of 2.0 ± 3.3 m. Wi-Fi can be used within buildings with an accuracy of 7.0 ± 24.1 m. Using ECSS, the emergency call leads to a successful activation of EMS in 22.8 ± 10.8 min (Median 21 min). The use of a simple app with one button to touch did never cause any delay.

Conclusions and relevance

The worldwide emergency call support system (ECSS) significantly improves the emergency response in cases of disorientated patients or language barriers. Under circumstances without ECSS, help can be delayed by 2 or more hours and might have relevant lifesaving effects. This is the first time that Wi-Fi geolocation could prove to be a useful improvement in emergencies to enhance GPS, especially within or close to buildings.

Are prehospital deaths from trauma and accidental injury preventable? A direct historical comparison to assess what has changed in two decades

BACKGROUND & OBJECTIVES

In 1994, Hussain and Redmond revealed that up to 39% of prehospital deaths from accidental injury might have been preventable had basic first aid care been given. Since then there have been significant advances in trauma systems and care. The exclusion of prehospital deaths from the analysis of trauma registries, giv en the high rate of those, is a major limitation in prehospital research on preventable death. We have repeated the 1994 study to identify any changes over the years and potential developments to improve patient outcomes.

METHODS

We examined the full Coroner's inquest files for prehospital deaths from trauma and accidental injury over a three-year period in Cheshire. Injuries were scored using the Abbreviated-Injury-Scale (AIS-1990) and Injury Severity Score (ISS), and probability of survival estimated using Bull's probits to match the original protocol.

RESULTS

One hundred and thirty-four deaths met our inclusion criteria; 79% were male, average age at death was 53.6 years. Sixty-two were found dead (FD), fifty-eight died at scene (DAS) and fourteen were dead on arrival at hospital (DOA). The predominant mechanism of injury was fall (39%). The median ISS was 29 with 58 deaths (43%) having probability of survival of >50%. Post-mortem evidence of head injury was present in 102 (76%) deaths. A bystander was on scene or present immediately after injury in 45% of cases and prior to the Emergency Medical Services (EMS) in 96%. In 93% of cases a bystander made the call for assistance, in those DAS or DOA, bystander intervention of any kind was 43%.

CONCLUSIONS

The number of potentially preventable prehospital deaths remains high and unchanged. First aid intervention of any kind is infrequent. There is a potentially missed window of opportunity for bystander intervention prior to the arrival of the ambulance service, with simple first-aid manoeuvres to open the airway, preventing hypoxic brain injury and cardiac arrest.

Prehospital deaths from trauma: Are injuries survivable and do bystanders help?

BACKGROUND AND OBJECTIVES

Deaths from trauma occurring in the prehospital phase of care are typically excluded from analysis in trauma registries. A direct historical comparison with Hussain and Redmond's study on preventable prehospital trauma deaths has shown that, two decades on, the number of potentially preventable deaths remains high. Using updated methodology, we aimed to determine the current nature, injury severity and survivability of traumatic prehospital deaths and to ascertain the presence of bystanders and their role following the point of injury including the frequency of first-aid delivery.

METHODS

We examined the Coroners' inquest files for deaths from trauma, occurring in the prehospital phase, over a three-year period in the Cheshire and Manchester (City), subsequently referred to as Manchester, Coronial jurisdictions. Injuries were scored using the Abbreviated-Injury-Scale (AIS-2008), Injury Severity Score (ISS) calculated and probability of survival estimated using the Trauma Audit and Research Network's outcome prediction model.

RESULTS

One hundred and seventy-eight deaths were included in the study (one hundred and thirty-four Cheshire, forty-four Manchester). The World Health Organisation's recommendations consider those with a probability of survival between 25-50% as potentially preventable and those above 50% as preventable. The median ISS was 29 (Cheshire) and 27.5 (Manchester) with sixty-two (46%) and twenty-six (59%) respectively having a probability of survival in the potentially preventable and preventable ranges. Bystander presence during or immediately after the point of injury was 45% (Cheshire) and 39% (Manchester). Bystander intervention of any kind was 25% and 30% respectively. Excluding those found dead and those with a probability of survival less than 25%, bystanders were present immediately after the point of injury or "within minutes" in thirty-three of thirty-five (94%) Cheshire and ten of twelve (83%) Manchester. First aid of any form was attempted in fourteen of thirty-five (40%) and nine of twelve (75%) respectively.

CONCLUSIONS

A high number of prehospital deaths from trauma occur with injuries that are potentially survivable, yet first aid intervention is infrequent. Following injury there is a potential window of opportunity for the provision of bystander assistance, particularly in the context of head injury, for simple first-aid manoeuvres to save lives.

Fatal road traffic accidents and their relationship with head injuries: An epidemiological survey of five years

In depth studies of fatal vehicular accidents provide valuable data for implementing effective emergency services to reduce the trauma related mortality and strengthening legal measures in peak hours of fatal accidents. We aimed to study, pattern of injuries especially fatal traumatic brain injuries occurring in vehicular accidents. Postmortem reports and clinical records of victims of road traffic accident autopsied during the period of 2001–2005 at Department of Forensic Medicine and Toxicology, All India Institute of Medical Sciences, New Delhi, were analyzed retrospectively. Out of total 7008 medico legal autopsies conducted during the study period, 2472 (35.27 %) were of vehicular accidents. The male/female ratio was 7.49:1. Commonest age group affected was between 21-40 years involving 1341 (54.24%) cases. Pre-hospital mortality was in 985 (39.84 %) cases. Fatal traumatic brain injuries were seen in 1699 (68.73%) cases. Skull fractures were found in 1183 (69.63%) cases of head injury; most common bone fractured was temporal bone (n=559, 47.25%). The commonest variety of intracranial hemorrhage was subdural hemorrhage (n=1514, 89.11%). The craniotomy was done in 297 (17.48%) cases; maximum mortality (41.07%) was seen within 4–ays. Most commonly injured abdominal organ was liver (n=532, 21.52%). No significant difference was evident in incidence of fatal vehicular accident on weekends and weekdays. However November month took maximum toll of deaths (n=273, 11.04%) of total vehicular accident fatalities in five year duration. 53.20% of fatal accident occurred between 6 PM and 6 AM. The results of study emphasize the need to improve the pre hospital care with provision of trauma services at site and to establish neurosurgical facilities with trauma registry.

A Call for Consensus on Methodology and Terminology to Improve Comparability in the Study of Preventable Prehospital Trauma Deaths: A Systematic Literature Review

OBJECTIVES

The study of preventable deaths is essential to trauma research for measuring service quality and highlighting avenues for improving care and as a performance indicator. However, variations in the terminology and methodology of studies on preventable prehospital trauma death limit the comparability and wider application of data. The objective of this study was to describe the heterogeneity in terminology and methodology.

METHODS

We performed a systematic literature review and report this using the PRISMA guidelines. Searches were conducted using PubMed (including Medline), Ovid, and Embase databases. Studies, with a full text available in English published between 1990 and 2015, meeting the following inclusion criteria were included: analysis of 1) deaths from trauma, 2) occurring in the prehospital phase of care, and 3) application of criteria to ascertain whether deaths were preventable. One author screened database results for relevance by title and abstract. The full text of identified papers was reviewed for inclusion. The reference list of included papers was screened for studies not identified by the database search. Data were extracted on predefined core elements relating to preventability reporting and definitions using a standardized form.

RESULTS

Twenty-seven studies meeting the inclusion criteria were identified: 12 studies used two categories to assess the preventability of death while 15 used three categories. Fifteen variations in the terminology of these categories and combination with death descriptors were found. Eleven different approaches were used in defining what constituted a preventable death. Twenty-one included survivability of injuries as a criterion. Methods used to determine survivability differed and eight variations in parameters for categorization of deaths were used. Nineteen used panel review in determining preventability with six implementing panel blinding. Panel composition varied greatly by expertise of personnel. Separation of prehospital deaths differed with 10 separating those dead at scene (DAS) and dead on arrival, three excluding those DAS, three excluding deaths prior to EMS arrival, and 11 not separating prehospital deaths.

CONCLUSIONS

The heterogeneity in methodology, terminology, and definitions of "preventable" between studies render data incomparable. To facilitate common understanding, comparability, and analysis, a commonly agreed ontology by the prehospital research community is required.

Bystander first aid in trauma - prevalence and quality: a prospective observational study

Background

Bystander first aid and basic life support can likely improve victim survival in trauma. In contrast to bystander first aid and out‐of‐hospital cardiac arrest, little is known about the role of bystanders in trauma response. Our aim was to determine how frequently first aid is given to trauma victims by bystanders, the quality of this aid, the professional background of first‐aid providers, and whether previous first‐aid training affects aid quality.

Methods

We conducted a prospective 18‐month study in two mixed urban–rural Norwegian counties. The personnel on the first ambulance responding to trauma calls assessed and documented first aid performed by bystanders using a standard form.

Results

A total of 330 trauma calls were included, with bystanders present in 97% of cases. Securing an open airway was correctly performed for 76% of the 43 patients in need of this first‐aid measure. Bleeding control was provided correctly for 81% of 63 patients for whom this measure was indicated, and prevention of hypothermia for 62% of 204 patients. Among the first‐aid providers studied, 35% had some training in first aid. Bystanders with documented first‐aid training gave better first aid than those where first‐aid training status was unknown.

Conclusions

A majority of the trauma patients studied received correct pre‐hospital first aid, but still there is need for considerable improvement, particularly hypothermia prevention. Previous first‐aid training seems to improve the quality of first aid provided. The effect on patient survival needs to be investigated.

Development of road safety performance indicators for trauma management in Europe

Trauma management (TM) covers two types of medical treatment: the initial one provided by Emergency Medical Services (EMS) and a further one provided by permanent medical facilities. There is a consensus in the professional literature that to reduce the severity and the number of road crash victims, the TM system should provide rapid and adequate initial care of injury, combined with sufficient further treatment at a hospital or trauma centre. Recognizing the important role of TM for reducing road crash injury outcome, it was decided, within the EU funded SafetyNet project, to develop road safety performance indicators (SPIs) which would characterize the level of TM systems' performance in European countries and enable country comparisons. The concept of TM SPIs was developed based on a literature study of performance indicators in TM, a survey of available practices in Europe and data availability examinations. A set of TM SPIs was introduced including 14 indicators which characterize five issues such as: availability of EMS stations; availability and composition of EMS medical staff; availability and composition of EMS transportation units; characteristics of the EMS response time, and availability of trauma beds in permanent medical facilities. Basic information on the TM systems was collected in close cooperation with the national expert group. A dataset with TM SPIs for 21 countries was created. It was demonstrated that the countries can be compared using selected TM SPIs. Moreover, a more general comparison of the TM systems' performance in the countries is possible, using multiple ranking and statistical weighting techniques. By both methods, final estimates were received enabling the recognition of groups of countries with similar levels of the TM system's performance. The results of various trials were consistent as to the recognition of countries with high or low level of the TM systems' performance, where in grouping countries with intermediate levels of the TM system's performance some differences were observed. The SafetyNet project's practice demonstrated that data collection for estimating TM SPIs is not an easy task but is realizable for the majority of countries. The TM SPIs' message is currently limited to the availability of trauma care services. Further development of the TM SPIs should focus on characteristics of actual treatment supplied, based on combined police and medical road crash related databases.

Pattern of injury in fatal road traffic accidents in a rural area of western Maharashtra, India

BACKGROUND

Fatal road traffic accidents (RTA) are a major cause of concern all over the world. The outcome of injuries sustained in an RTA depends on various factors including but not limited to: the location of the event, type of vehicle involved, nature of the roads, the time of accident, etc.

AIMS

This study aims to investigate and evaluate prospectively the socio-demographic profile and pattern of injuries in victims of RTA in the rural area of the Ahmedanagar district of Maharashtra state.

METHOD

This prospective study included all victims of RTA that presented to our emergency room from 1 June 2007 to 31 May 2009 and were either found dead on arrival or died during treatment. All the victims were autopsied at the post-mortem centre of Rural Medical College, Loni.

RESULTS

Ninety-eight RTA victims were studied during the period. The most commonly affected age group was 20-39 years. Men died in RTA more than women. Fatal RTA were more prevalent on the secondary road system (47.97 per cent) and especially involved pedestrian and two wheeler vehicle users. Large numbers (n=63, 64.28%) of victims either died on the scene or during transportation. Numbers of skeletal injuries (199) and internal organ injuries (202) exceeded the total number of victims (98) clearly indicating the multiplicity of injuries. The majority of RTA victims (n=46, 46.93%) died due to head injury. The study showed that most deaths in RTA, brought to a tertiary care rural hospital, took place either on the spot or within 24 hours of injury which is very alarming and highlights the need to take urgent steps to establish good pre-hospital care and provision of trauma services at site.

CONCLUSION

A computerised trauma registry is urgently needed to highlight risk factors, circumstances and chains of events leading to accidents. This would be extremely helpful in policy making and health management in India.

A systematic literature review on first aid provided by laypeople to trauma victims

Death from trauma is a significant and international problem. Outcome for patients suffering out-of-hospital cardiac arrests is significantly improved by early cardiopulmonary resuscitation. The usefulness of first aid given by laypeople in trauma is less well established. The aim of this study was to review the existing literature on first aid provided by laypeople to trauma victims and to establish how often first aid is provided, if it is performed correctly, and its impact on outcome. A systematic review was carried out, according to preferred reporting items for systematic reviews and meta-analysis (PRISMA) guidelines, of all studies involving first aid provided by laypeople to trauma victims. Cochrane, Embase, Medline, Pubmed, and Google Scholar databases were systematically searched. Ten eligible articles were identified involving a total of 5836 victims. Eight studies were related to patient outcome, while two studies were simulation based. The proportion of patients who received first aid ranged from 10.7% to 65%. Incorrect first aid was given in up to 83.7% of cases. Airway handling and haemorrhage control were particular areas of concern. One study from Iraq investigated survival and reported a 5.8% reduction in mortality. Two retrospective autopsy-based studies estimated that correct first aid could have reduced mortality by 1.8-4.5%. There is limited evidence regarding first aid provided by laypeople to trauma victims. Due to great heterogeneity in the studies, firm conclusions can not be drawn. However, the results show a potential mortality reduction if first aid is administered to trauma victims. Further research is necessary to establish this.

A mulher e o acidente de trânsito: caracterização do evento em Maringá, Paraná

Os acidentes de trânsito são atualmente a primeira causa de mortalidade no conjunto de causas externas entre as mulheres. A mulher atual, pelas mudanças em seu papel na sociedade, vem se expondo a novos riscos. Este estudo teve como objetivo caracterizar a mulher envolvida em acidente de trânsito, assim como os eventos. Foi realizado um estudo transversal, com dados secundários obtidos nos Boletins de Ocorrência de Acidente de Trânsito - BOAT, do 4º Batalhão da Polícia Militar de Maringá, Setor de Trânsito. Os dados foram categorizados e analisados por meio de testes não-paramétricos, de correlações (Spearman) e teste de independência entre as variáveis (qui-quadrado). As mulheres envolvidas em acidente de trânsito eram em sua maioria solteiras (34,0%), com idade entre 21 e 30 anos (49,0%), nível de escolaridade acima do ensino médio (58,0%) e predominantemente condutoras (65,0%). Os eventos ocorreram principalmente em dias úteis e nos período da tarde e da noite. As lesões foram mais frequentes em mulheres até os 20 anos e acima dos 51. Maior envolvimento em colisões com automóveis (69,%), com grande proporção de atropelamentos (14,2%), envolveram mulheres acima dos 50 anos e com menor nível de escolaridade. Foram mais atentas ao uso de dispositivos de segurança quando casadas e com maior nível de escolaridade. Estes dados sugerem novo perfil da mulher no trânsito, devendo o acompanhamento destas características e das consequências destes acidentes serem mais constantes em pesquisas, direcionando medidas e campanhas preventivas.

Post-crash management of road traffic injury victims in Iran. Stakeholders' views on current barriers and potential facilitators

BACKGROUND

Road traffic injuries are a major public health problem, especially in low- and middle-income countries. Post-crash management can play a significant role in minimizing crash consequences and saving lives. Iran has one of the highest mortality rates from road traffic injuries in the world. The present study attempts to fill the knowledge gap and explores stakeholders' perceptions of barriers to - and facilitators of - effective post-crash management in Iranian regions.

METHODS

Thirty-six semi-structured interviews were conducted with medical services personnel, police officers, members of Red Crescent, firefighters, public-health professionals, road administrators; some road users and traffic injury victims. A qualitative approach using grounded theory method was employed to analyze the material gathered.

RESULTS

The core variable was identified as "poor quality of post crash management". Barriers to effective post-crash management were identified as: involvement of laypeople; lack of coordination; inadequate pre-hospital services; shortcomings in infrastructure. Suggestions for laypeople included: 1) a public education campaign in first aid, the role of the emergency services, cooperation of the public at the crash site, and 2) target-group training for professional drivers, police officers and volunteers involved at the crash scene. An integrated trauma system and infrastructure improvement also is crucial to be considered for effective post-crash management.

CONCLUSION

To sum up, it seems that the involvement of laypeople could be a key factor in making post-crash management more effective. But system improvements are also crucial, including the integration of the trauma system and its development in terms of human resources (staffing and training) and physical resources as well as the infrastructure development.

Mapping injuries in traffic accident victims: a literature review

The objective of this study was to identify the body regions most affected in traffic accident victims and to map the trauma and severity of the lesions. A systematic literature review using key words related to traffic accidents, transportation accidents, wounds and injuries found a total of 248 articles. The electronic bases LILACS, MEDLINE, and PAHO were surveyed between the years 1990 and December 2006. This review emphasized a series of conclusive studies about the most frequent body regions involved and the major injuries occurring in these situations. It also indicated information gaps in the Brazilian literature. We believe that these findings are valuable for pre-hospital and intra-hospital teams and point the way to new investigations.

Passenger car collision fatalities--with special emphasis on collisions with heavy vehicles

Between 1995 and 2004, 293 passenger car occupants died in collisions with other vehicles in northern Sweden (annual incidence: 3.3 per 100,000 inhabitants, 6.9 per 100,000 cars, or 4.8 per 10(9)km driven); half of these deaths involved heavy vehicles. The annual number of passenger car occupant deaths per 100,000 cars in car-truck/bus collisions has remained unchanged since the 1980s, but in car-car collisions it has decreased to one third of its former level. As crash objects, trucks and buses killed five times as many car occupants per truck/bus kilometer driven as did cars. The collisions were characterized by crashes in the oncoming vehicle's lane, under icy, snowy, or wet conditions; crashes into heavy vehicles generally occurred in daylight, on workdays, in winter, and on 90 and 70 km/h two-lane roads. Head and chest injuries accounted for most of the fatal injuries. Multiple fatal injuries and critical and deadly head injuries characterized the deaths in collisions with heavy vehicles. An indication of suicide was present in 4% of the deaths; for those who crashed into trucks, this percentage was doubled. Among the driver victims, 4% had blood alcohol levels above the legal limit of 0.2g/L. Frontal collision risks might be reduced by a mid-barrier, by building less injurious fronts on trucks and buses, by efficient skid prevention, and by use of flexible speed limits varying with road and light conditions.