Potentially preventable prehospital deaths from motor vehicle collisions

Characterization of adverse events in injured patients at risk of hemorrhagic shock: a secondary analysis of three harmonized prehospital randomized clinical trials

Background

The reporting of adverse events (AEs) is required and well defined in the execution of clinical trials, but is poorly characterized particularly in prehospital trials focusing on traumatic injury. In the setting of prehospital traumatic injury trials, no literature currently exists analyzing the clinical implications of AEs and their associations with mortality and morbidity. We sought to analyze AEs from three prehospital hemorrhagic shock trials and characterize their time course, incidence, severity, associated clinical outcomes, and relatedness.

Methods

We performed a secondary analysis of three prehospital randomized clinical trials. We analyzed AEs at both the patient level as well as the individual AE level. We categorized patients who had no AEs, a single documented AE and those with multiple events (>1 AE). We characterized AE timing, severity, relatedness and attributable mortality outcomes.

Results

We included 1490 patients from the three harmonized clinical trials, with 299 (20.1%) individual patients having at least a single AE documented with 529 AEs documented overall as a proportion of patients had multiple events. Over 44% of patients had a death-related misclassified AE. Patients with at least a single documented AE had a significantly higher 28-day mortality (log-rank χ2=81.27, p<0.001) compared with those without an AE documented. Patients with a single AE had a significant higher mortality than those with multiple AEs, potentially due to survival bias (log-rank χ2=11.80, p=0.006). When relatedness of each individual AE was characterized, over 97% of AEs were classified as 'definitely not related' or 'probably not related' to the intervention.

Conclusions

AEs in hemorrhagic shock trials are common, occur early and are associated with mortality and survival bias. The potential for inaccurate reporting exists, and education and training remain essential for appropriate treatment arm comparison. The current results have important relevance to injury-related clinical trials.

Trial registration numbers

NCT01818427, NCT02086500 and NCT03477006.

Level of evidence

II.

Severe trauma with associated pelvic fractures: The impact of regional trauma networks on clinical outcome

Lately, the care of severely injured patients in the United Kingdom has undergone a significant transformation. The establishment of regional trauma networks (RTN) with designated Major Trauma Centers (MTCs) and satellite hospitals called Trauma Units (TUs) has centralized the care of severely injured patients in the MTCs. Pelvic fractures are notoriously linked with hypovolemic shock or even death from excessive blood loss. The aim of this prospective cohort study is to compare the profile of severely injured patients with combined pelvic fractures and their mortality between two different distinct eras of an advanced healthcare system. Anonymized consecutive patient records submitted to TARN UK between 2002 and 2017 by NHS England hospitals were analyzed. Records of patients without a pelvic fracture, or with isolated pelvic fractures (no other serious injury with abbreviated injury scale AIS >2) were excluded. All patients with known outcomes were included and were divided into 2 distinct periods (pre-RTN era: between January 2002 and March 2008 (control group); and RTN era April 2013 to June 2017 (study group)). Data from the transition period from April 2008 to March 2013 were excluded to minimize the effect of variations between the developing networks and MTCs during that era. Overall, the study group included 10,641 patients, whereas the control group was 3152 patients, with a median age of 52.4 and 35.1 years and an ISS of 24 and 27 respectively. A systolic blood pressure below 90mmHg was observed in 7.2% of patients in the study group and 10.4% in the control group. A significant increase of the median time to death (from 8hrs to 188hrs) was observed between the two eras. The cumulative mortality of severely injured patients with pelvic fractures decreased significantly from 17.8% to 12.4% (p<0.0001). The recorded improvement of survivorship in the subgroup of severely injured patients with a pelvic fracture (32% lower in the post-RTN than in the pre-RTN period: OR 1.32  (95% CI 1.21 - 1.44), following the first 5 years of established regional trauma networks in NHS England, is encouraging, and should be attributed to a wide range of factors that translate to all levels of trauma care.

The Burden of Motorcycle Crash Injuries on the Public Health System in Kisumu City, Kenya

BACKGROUND

In Kenya, the increased use of motorcycles for transport has led to increased morbidity, mortality, and disability. These injuries exert a burden on the public health system, yet little information exists on health care resource usage by motorcycle crash injury patients. We aimed to estimate the burden of motorcycle crash injuries on the health system in Kisumu City.

METHODS

We conducted a 6-month prospective study of all motorcycle crash injury patients who presented to 3 Tier III public and private hospitals in Kisumu City between May and November 2019. We collected data on demographics, emergency department (ED) visits, admissions, anatomic injury site, services used, and injury severity. We reviewed hospital records to obtain denominator data on all the conditions presenting to the EDs.

RESULTS

A total of 1,073 motorcycle crash injury cases accounted for 2.0%, 12.0%, and 13.6% of total emergency visits, total injuries, and total admissions to the hospitals, respectively. Men were overrepresented (P<.001). The mean age was 29.6 years (±standard deviation [SD] 12.19; range=2-84). The average injury severity score was 12.83. Surgical interventions were required by 89.3% of patients admitted. Of the 123 patients admitted to the intensive care unit, 42.3% were due to motorcycle accident injuries.

CONCLUSION

Motorcycle injuries impose a major burden on the Kisumu City public health system. Increased promotion and reinforcement of appropriate interventions and legislation can help prevent accidents and mitigate their consequences. Focusing on motorcycle injury prevention will reduce accident-related morbidity, hospitalization, severity, and fatalities and the impact on the public health system.

Femoral fractures are an indicator of increased severity of injury for road traffic collision victims: an autopsy-based case-control study on 4895 fatalities

INTRODUCTION

The course of road traffic collision (RTC) victims with femoral fractures (FFx) from injury to death was reviewed. We sought to correlate the presence of femoral fractures with the overall severity of injury from RTCs using objective indices and to identify statistically significant associations with injuries in other organs.

PATIENTS AND METHODS

A case-control study based on forensic material from 4895 consecutive RTC-induced fatalities, between 1996 and 2005. Injuries were coded according to the Abbreviated Injury Scale-1990 Revision (AIS-90), and the Injury Severity Score (ISS) was calculated. Victims were divided according to the presence of femoral fractures in all possible anatomic locations or not. Univariate comparisons and logistic regression analysis for probabilities of association as odds ratios (OR) were performed.

RESULTS

The FFx group comprised 788 (16.1%) victims. The remaining 4107 victims constituted the controls. The FFx group demonstrated higher ISS (median 48 vs 36, p < 0.001) and shorter post-injury survival times (median 60 vs 85 min, p < 0.001). Presence of bilateral fractures (15.5%) potentiated this effect (median ISS 50 vs 43, p = 0.006; median survival time 40 vs 65, p = 0.0025; compared to unilateral fractures). Statistically significant associations of FFx were identified with AIS2-5 thoracic trauma (OR 1.43), AIS2-5 abdominal visceral injuries (OR 1.89), AIS1-3 skeletal injuries of the upper (OR 2.7) and lower limbs (OR 3.99) and AIS2-5 of the pelvis (OR 2.75) (p < 0.001). In the FFx group, 218 (27.7%) victims survived past the emergency department and 116 (53.2%) underwent at least one surgical procedure. Complications occurred in 45.4% of hospitalized victims, the most common being pneumonia (34.8%).

CONCLUSION

This study has documented that femoral fractures are associated with increased severity of injury, shorter survival times and higher incidence of associated thoracic, abdominal and skeletal extremity injuries, compared to controls. These findings should be considered for an evidence-based upgrading of trauma care.

Preventable death in trauma: A systematic review on definition and classification

PURPOSE

Trauma-related preventable death (TRPD) has been used to assess the management and quality of trauma care worldwide. However, due to differences in terminology and application, the definition of TRPD lacks validity. The aim of this systematic review is to present an overview of current literature and establish a designated definition of TRPD to improve the assessment of quality of trauma care.

METHODS

A search was conducted in PubMed, Embase, the Cochrane Library and the Web of Science Core Collection. Including studies regarding TRPD, published between January 1, 1990, and April 6, 2021. Studies were assessed on the use of a definition of TRPD, injury severity scoring tool and panel review.

RESULTS

In total, 3,614 articles were identified, 68 were selected for analysis. The definition of TRPD was divided in four categories: I. Clinical definition based on panel review or expert opinion (TRPD, trauma-related potentially preventable death, trauma-related non-preventable death), II. An algorithm (injury severity score (ISS), trauma and injury severity score (TRISS), probability of survival (Ps)), III. Clinical definition completed with an algorithm, IV. Other. Almost 85% of the articles used a clinical definition in some extend; solely clinical up to an additional algorithm. A total of 27 studies used injury severity scoring tools of which the ISS and TRISS were the most frequently reported algorithms. Over 77% of the panels included trauma surgeons, 90% included other specialist; 61% emergency medicine physicians, 46% forensic pathologists and 43% nurses.

CONCLUSION

The definition of TRPD is not unambiguous in literature and should be based on a clinical definition completed with a trauma prediction algorithm such as the TRISS. TRPD panels should include a trauma surgeon, anesthesiologist, emergency physician, neurologist, and forensic pathologist.

Use of prehospital, hospitalization and presence of sequelae and/or disability in road traffic injury victims in Brazil

Objective

To estimate the prevalence and analyze the association between sociodemographic and behavioral variables with the use of prehospital care, hospitalization and sequelae and/or disability in victims of road traffic accidents victims in Brazil.

Methods

Data from the National Health Survey conducted in 2013 in Brazil were used. Data were collected through a direct household survey. The research sample consisted of 1,840 individuals who reported road traffic accidents in the previous 12 months. Poisson regression analysis was used to evaluate the factors associated with the use of prehospital care services, hospitalization, and the presence of sequelae and/or disability.

Results

The prevalence of road traffic accidents victims who received prehospital care was 13.0% (95% Confidence Interval [95% CI]: 10.3–16.3) and the factors associated with this outcome were: residing in the Northeast or North region of Brazil; residing in rural areas; and being a motorcycle occupant at the moment of the road traffic accident. The frequency of hospitalization was 7.7% (95% CI: 6.0–10.0) and the associated factors were: age between 40 and 59 years; being a motorcycle occupant or pedestrian and having received on-site care at the moment of the road traffic accident. The prevalence of sequelae and/or disability was 15.1% (95% CI: 12.5–18.2) and the associated factors were: age range between 30 and 39 years or 40 and 59 years; being a motorcycle occupant, being a pedestrian or belonging to other category of modes of transport and having received on-site care at the moment of the road traffic accident.

Conclusion

The study allowed to evaluate the factors associated with prehospital care, hospitalization and presence of sequelae and/or disability in the victims of road traffic accident and the results can guide the implementation of interventions that prioritize the population exposed to the highest risk of road traffic accident injuries and with less access to prehospital and hospital care services in Brazil.

Measurement and monitoring patient safety in prehospital care: a systematic review

BACKGROUND

Prehospital care is potentially hazardous with the possibility for patients to experience an adverse event. However, as compared to secondary care, little is known about how patient safety is managed in prehospital care settings.

OBJECTIVES

The objectives of this systematic review were to identify and classify the methods of measuring and monitoring patient safety that have been used in prehospital care using the five dimensions of the Measuring and Monitoring Safety (MMS) framework and use this classification to identify where there are safety 'blind spots' and make recommendations for how these deficits could be addressed.

METHODS

Searches were conducted in January 2020, with no limit on publication year, using Medline, PsycInfo, CINAHL, Web of Science and Academic Search. Reference lists of included studies and existing related reviews were also screened. English-language, peer-reviewed studies concerned with measuring and monitoring safety in prehospital care were included. Two researchers independently extracted data from studies and applied a quality appraisal tool (the Quality Assessment Tool for Studies with Diverse Designs).

RESULTS

A total of 5301 studies were screened, with 52 included in the review. A total of 73% (38/52) of the studies assessed past harm, 25% (13/52) the reliability of safety critical processes, 1.9% (1/52) sensitivity to operations, 38.5% (20/52) anticipation and preparedness and 5.8% (3/52) integration and learning. A total of 67 methods for measuring and monitoring safety were used across the included studies. Of these methods, 38.8% (26/67) were surveys, 29.9% (20/67) were patient records reviews, 14.9% (10/67) were incident reporting systems, 11.9% (8/67) were interviews or focus groups and 4.5% (3/67) were checklists.

CONCLUSIONS

There is no single method of measuring and monitoring safety in prehospital care. Arguably, most safety monitoring systems have evolved, rather than been designed. This leads to safety blind spots in which information is lacking, as well as to redundancy and duplication of effort. It is suggested that the findings from this systematic review, informed by the MMS framework, can provide a structure for critically thinking about how safety is being measured and monitored in prehospital care. This will support the design of a safety surveillance system that provides a comprehensive understanding of what is being done well, where improvements should be made and whether safety interventions have had the desired effect.

A comparison of the demographics, injury patterns and outcome data for patients injured in motor vehicle collisions who are trapped compared to those patients who are not trapped

Background

Motor vehicle collisions (MVCs) are a common cause of major trauma and death. Following an MVC, up to 40% of patients will be trapped in their vehicle. Extrication methods are focused on the prevention of secondary spinal injury through movement minimisation and mitigation. This approach is time consuming and patients may have time-critical injuries. The purpose of this study is to describe the outcomes and injuries of those trapped following an MVC: this will help guide meaningful patient-focused interventions and future extrication strategies.

Methods

We undertook a retrospective database study using the Trauma Audit and Research Network database. Patients were included if they were admitted to an English hospital following an MVC from 2012 to 2018. Patients were excluded when their outcomes were not known or if they were secondary transfers.

Results

This analysis identified 426,135 cases of which 63,625 patients were included: 6983 trapped and 56,642 not trapped. Trapped patients had a higher mortality (8.9% vs 5.0%, p < 0.001). Spinal cord injuries were rare (0.71% of all extrications) but frequently (50.1%) associated with other severe injuries. Spinal cord injuries were more common in patients who were trapped (p < 0.001).

Injury Severity Score (ISS) was higher in the trapped group 18 (IQR 10–29) vs 13 (IQR 9–22). Trapped patients had more deranged physiology with lower blood pressures, lower oxygen saturations and lower Glasgow Coma Scale, GCS (all p < 0.001). Trapped patients had more significant injuries of the head chest, abdomen and spine (all p < 0.001) and an increased rate of pelvic injures with significant blood loss, blood loss from other areas or tension pneumothorax (all p < 0.001).

Conclusion

Trapped patients are more likely to die than those who are not trapped. The frequency of spinal cord injuries is low, accounting for < 0.7% of all patients extricated. Patients who are trapped are more likely to have time-critical injuries requiring intervention. Extrication takes time and when considering the frequency, type and severity of injuries reported here, the benefit of movement minimisation may be outweighed by the additional time taken. Improved extrication strategies should be developed which are evidence-based and allow for the expedient management of other life-threatening injuries.

Mortality of trauma patients treated at trauma centers compared to non-trauma centers in Sweden: a retrospective study

Objective

The main objective was to compare the 30-day mortality rate of trauma patients treated at trauma centers as compared to non-trauma centers in Sweden. The secondary objective was to evaluate how injury severity influences the potential survival benefit of specialized care.

Methods

This retrospective study included 29,864 patients from the national Swedish Trauma Registry (SweTrau) during the period 2013–2017. Three sampling exclusion criteria were applied: (1) Injury Severity Score (ISS) of zero; (2) missing data in any variable of interest; (3) data falling outside realistic values and duplicate registrations. University hospitals were classified as trauma centers; other hospitals as non-trauma centers. Logistic regression was used to analyze the effect of trauma center care on mortality rate, while adjusting for other factors potentially affecting the risk of death.

Results

Treatment at a trauma center in Sweden was associated with a 41% lower adjusted 30-day mortality (odds ratio 0.59 [0.50–0.70], p < 0.0001) compared to non-trauma center care, considering all injured patients (ISS ≥ 1). The potential survival benefit increased substantially with higher injury severity, with up to > 70% mortality decrease for the most critically injured group (ISS ≥ 50).

Conclusions

There exists a potentially substantial survival benefit for trauma patients treated at trauma centers in Sweden, especially for the most severely injured. This study motivates a critical review and possible reorganization of the national trauma system, and further research to identify the characteristics of patients in most need of specialized care.

Decrease in Trauma Admissions with COVID-19 Pandemic

INTRODUCTION

The COVID-19 pandemic has led to social distancing and decreased travel in the United States. The impact of these interventions on trauma and emergency general surgery patient volume has not yet been described.

METHODS

We compared trauma admissions and emergency general surgery (EGS) cases between February 1-April 14 from 2017-2020 in five two-week time periods. Data were compared across time periods with Poisson regression analysis.

RESULTS

There were significant decreases in overall trauma admissions (57.4% decrease, p<0.001); motor vehicle collisions (MVC) (80.5% decrease, p<0.001); and non-MVCs (45.1% decrease, p<0.001) from February-April 2020. We found no significant change in EGS cases (p = 0.70). Nor was there was a significant change in trauma cases in any other year 2017-2019.

CONCLUSION

The COVID-19 pandemic's burden of disease correlated with a significant decrease in trauma admissions, with MVCs experiencing a larger decrease than non-MVCs.

Design and implementation of the Western Pennsylvania regional Stop the Bleed initiative

BACKGROUND

Hemorrhage is the leading cause of preventable death in trauma, and nearly 40% of prehospital deaths can be attributed to blood loss. The Stop the Bleed program provides a structured curriculum for teaching hemorrhage control and the use of bleeding control kits. To overcome implementation barriers and to achieve the goal of making education on bleeding control as common as cardiopulmonary resuscitation, widespread implementation with outreach to the public and law enforcement is necessary.

METHODS

We provide a description and analysis of the implementation of a regional Stop the Bleed program, which includes a step-by-step guide to the design of this program provided as a template to guide attempts at large-scale Stop the Bleed program development.

RESULTS

Combining the efforts of regional trauma and nontrauma centers as a hub-and-spoke design, a region covering four states, 72 counties, and 30,000 square miles was targeted. A total of 27,291 individuals were trained in a 21-month period including 3,172 trainers, 19,310 lay public, and 4,809 law enforcement officers. A total of 436 bleeding control kits were distributed to 102 public schools, and tourniquets were provided to 4,809 law enforcement officers. Program development and community outreach resulted in official recognition of the program by the Pennsylvania State Senate.

CONCLUSIONS

With the use of a multicenter outreach program design with emphasis on law enforcement and public education while developing a train-the-trainer program, widespread and rapid dissemination of Stop the Bleed teaching is feasible. The general steps described in this manuscript may serve as a template for new or developing programs in other areas to increase the national exposure to Stop the Bleed.

LEVEL OF EVIDENCE

Economic/Decision study, level IV.

High Mortality from Major Vascular Trauma in Traffic Accidents: A Population-Based Study

BACKGROUND AND AIMS

Injuries involving major arteries are an important cause of mortality and morbidity, most often from road traffic accidents. Our aim was to study the outcome of major vascular trauma from traffic accidents in an entire population, including patients who die at the scene and those who reach hospital alive.

MATERIALS AND METHODS

This was a retrospective analysis of all patients who sustained major vascular trauma in traffic accidents in Iceland from 2000 to 2011. Patient demographics, mechanism, and location of vascular injury and treatment were registered. Injury scores were calculated and overall survival estimated.

RESULTS

There were 62 individuals (mean age 44 years, 79% males) with 95 major vascular traumas, giving an incidence of 1.69/100,000 inhabitants (95% confidence interval: 1.27-2.21). A total of 33 died at the scene and 8 during transportation to hospital but 21 (34%) reached hospital alive. Most patients who succumbed had thoracic major vascular traumas (76%) or abdominal major vascular traumas (23%). Mean new injury severity score for the 21 admitted patients was 44. A total of 18 were operated with vascular repair, 3 with endovascular stent graft insertion. The mean hospital stay for discharged patients was 34 days. Altogether, 15 of the 62 patients (24%) survived to discharge from hospital, with a 5-year survival of 86% for discharged patients.

CONCLUSION

Every other patient with major vascular trauma following traffic accidents died at the scene and a further 13% died during transportation to hospital, most of whom sustained major vascular trauma to the thoracic aorta. However, one-third of the patients reached hospital alive and 71% of them survived to discharge, with excellent long-term survival.

External injuries, trauma and avoidable deaths in Agincourt, South Africa: a retrospective observational and qualitative study

OBJECTIVE

Injury burden is highest in low-income and middle-income countries. To reduce avoidable deaths, it is necessary to identify health system deficiencies preventing timely, quality care. We developed criteria to use verbal autopsy (VA) data to identify avoidable deaths and associated health system deficiencies.

SETTING

Agincourt, a rural Bushbuckridge municipality, Mpumalanga Province, South Africa.

PARTICIPANTS

Agincourt Health and Socio-Demographic Surveillance System and healthcare providers (HCPs) from local hospitals.

METHODS

A literature review to explore definitions of avoidable deaths after trauma and barriers to access to care using the 'three delays framework' (seeking, reaching and receiving care) was performed. Based on these definitions, this study developed criteria, applicable for use with VA data, for identifying avoidable death and which of the three delays contributed to avoidable deaths. These criteria were then applied retrospectively to the VA-defined category external injury deaths (EIDs-a subset of which are trauma deaths) from 2012 to 2015. The findings were validated by external expert review. Key informant interviews (KIIs) with HCPs were performed to further explore delays to care.

RESULTS

Using VA data, avoidable death was defined with a focus on survivability, using level of consciousness at the scene and ability to seek care as indicators. Of 260 EIDs (189 trauma deaths), there were 104 (40%) avoidable EIDs and 78 (30%) avoidable trauma deaths (41% of trauma deaths). Delay in receiving care was the largest contributor to avoidable EIDs (61%) and trauma deaths (59%), followed by delay in seeking care (24% and 23%) and in reaching care (15% and 18%). KIIs revealed context-specific factors contributing to the third delay, including difficult referral systems.

CONCLUSIONS

A substantial proportion of EIDs and trauma deaths were avoidable, mainly occurring due to facility-based delays in care. Interventions, including strengthening referral networks, may substantially reduce trauma deaths.

Streamlining pre- and intra-hospital care for patients with severe trauma: a white paper from the European Critical Care Foundation

PURPOSE

Major trauma remains a significant cause of morbidity and mortality in the developed and developing world. In 2013, nearly 5 million people worldwide died from their injuries, and almost 1 billion individuals sustained injuries that warranted some type of healthcare, accounting for around 10% of the global burden of disease in general. Behind the statistics, severe trauma takes a major toll on individuals, their families and healthcare systems. Management of the patient with severe trauma requires multiple interventions in a highly time-sensitive context and fragmentation of care, characterised by loss of information and time among disciplines, departments and individuals, both outside the hospital and within it, is frequent. Outcomes may be improved by better streamlining of pre- and intra-hospital care.

METHODS

We describe the basis for development of a multi-stakeholder consortium by the European Critical Care Foundation working closely with a number of European Scientific Societies to address and overcome problems of fragmentation in the care of patients with severe trauma.

RESULT

The consortium will develop and introduce an information management system adapted to severe trauma, which will integrate continuous monitoring of vital parameters and point-of-care diagnostics. The key innovation of the project is to harness the power of information technologies and artificial intelligence to provide computer-enhanced clinical evaluation and decision-support to streamline the multiple points at which information and time are potentially lost.

CONCLUSIONS

The severe trauma management platform thus created could have multiple benefits beyond its immediate use in managing the care of injured patients.

Methodology to reliably measure preventable trauma death rate

This article describes a methodology to establish a trauma preventable death rate (PDR) in a densely populated county in the USA. Harris County has >4 million residents, encompasses a geographic area of 1777 square miles and includes the City of Houston, Texas. Although attempts have been made to address a national PDR, these studies had significant methodological flaws. There is no national consensus among varying groups of clinicians for defining preventability or documenting methods by which preventability is determined. Furthermore, although trauma centers routinely evaluate deaths within their hospital for preventability, few centers compare across regions, within the prehospital arena and even fewer have evaluated trauma deaths at non-trauma centers. Comprehensive population-based data on all trauma deaths within a defined region would provide a framework for effective prevention and intervention efforts at the regional and national levels. The authors adapted a military method recently used in Southwest Asia to determine the potential preventability of civilian trauma deaths occurring across a large and diverse population. The project design will allow a data-driven approach to improve services across the entire spectrum of trauma care, from prevention through rehabilitation.