Evolution of Patient Outcomes Over 14 Years in a Mature, Inclusive Canadian Trauma System

Does the implementation of a trauma system affect injury-related morbidity and economic outcomes? A systematic review

BACKGROUND

Trauma accounts for a huge burden of disease worldwide. Trauma systems have been implemented in multiple countries across the globe, aiming to link and optimise multiple aspects of the trauma care pathway, and while they have been shown to reduce overall mortality, much less is known about their cost-effectiveness and impact on morbidity.

METHODS

We performed a systematic review to explore the impact the implementation of a trauma system has on morbidity, quality of life and economic outcomes, in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. All comparator study types published since 2000 were included, both retrospective and prospective in nature, and no limits were placed on language. Data were reported as a narrative review.

RESULTS

Seven articles were identified that met the inclusion criteria, all of which reported a pre-trauma and post-trauma system implementation comparison in high-income settings. The overall study quality was poor, with all studies demonstrating a severe risk of bias. Five studies reported across multiple types of trauma patients, the majority describing a positive impact across a variety of morbidity and health economic outcomes following trauma system implementation. Two studies focused specifically on traumatic brain injury and did not demonstrate any impact on morbidity outcomes.

DISCUSSION

There is currently limited and poor quality evidence that assesses the impact that trauma systems have on morbidity, quality of life and economic outcomes. While trauma systems have a fundamental role to play in high-quality trauma care, morbidity and disability data can have large economic and cultural consequences, even if mortality rates have improved. The sociocultural and political context of the surrounding healthcare infrastructure must be better understood before implementing any trauma system, particularly in resource-poor and fragile settings.

PROSPERO REGISTRATION NUMBER

CRD42022348529 LEVEL OF EVIDENCE: Level III.

Predictors of adverse outcomes in elders hospitalised for isolated orthopaedic trauma: a multicentre cohort study

BACKGROUND

Patients >64 years of age now represent more than 51% of injury hospitalisations in Canada. The tools used to identify older patients who could benefit the most from an interdisciplinary approach include complex parameters difficult to collect in the ED, which suggests that better tools with higher accuracy and using items that can be derived from routinely collected data are needed. We aimed to identify variables that are associated with adverse outcomes in older patients admitted to a trauma centre for an isolated orthopaedic injury.

METHODS

We conducted a multicentre retrospective cohort study between 1 April 2013 and 31 March 2019 on older patients hospitalised with a primary diagnosis of isolated orthopaedic injury (n=19 928). Data were extracted from the provincial trauma registry (Registre des traumatismes du Québec). We used multilevel logistic regression to estimate the associations between potential predictors and adverse outcomes (extended length of stay, mortality, complications, unplanned readmission and adverse discharge destination).

RESULTS

Increasing age, male sex, specific comorbidities, type of orthopaedic injuries, increasing number of comorbidities, severe orthopaedic injury, head injuries and admission in the year before the injury were all significant predictors of adverse outcomes.

CONCLUSION

We identified eight predictors of adverse outcomes in patients >64 years of age admitted to a trauma centre for orthopaedic injury. These variables could eventually be used to develop a clinical decision rule to identify elders who may benefit the most from interdisciplinary care.

Level of implementation of pain management and early mobilization strategies to prevent delirium in geriatric trauma patients: A mixed-methods study

BACKGROUND

Pain management and early mobilization strategies are recommended in clinical practice guidelines for the prevention of delirium in older adults. However, available data on the implementation of these strategies in trauma are limited.

AIMS

To describe the use of pain management and early mobilization strategies in older adults at a level I trauma center, as well as the facilitators and barriers to their implementation.

METHODS

A convergent mixed methods study was used. Quantitative data were collected from sixty medical records. Qualitative data was collected through a focus group with healthcare providers to explore their perspectives regarding the use of the target practices and on barriers and facilitators to their implementation. Descriptive statistics were calculated, and a thematic analysis using an inductive and deductive interpretative descriptive approach was undertaken.

RESULTS

A question on the presence/absence of pain was the most frequently documented pain assessment method. Pain assessment was poorly documented. Frequencies of non-opioid and opioid administrations were similar, but non-pharmacological strategies were not widely used. The first mobilization was performed quickly and was most commonly to a chair. The focus group discussion confirmed many of the data collected in the medical records. Barriers to implementing the targeted strategies were primarily related to organizational context and facilitation processes.

CONCLUSIONS

Areas for improvement were identified including pain assessment, the use of non-pharmacological pain management strategies and ambulation as a mobilization strategy. Our findings will serve as a starting point for optimizing and adapting practices for geriatric trauma patients and evaluating their impact.

Cohort profile: The Trauma Outcomes Project, a prospective study of New Zealanders experiencing major trauma

PURPOSE

Patient-reported outcome measures (PROMs) are useful for trauma registries interested in monitoring patient outcomes and trauma care quality. PROMs had not previously been collected by the New Zealand Trauma Registry (NZTR). More than 2500 New Zealanders are admitted to hospital for major trauma annually. The Trauma Outcomes Project (TOP) collected PROMs postinjury from three of New Zealand's (NZ's) major trauma regions. This cohort profile paper aims to provide a thorough description of preinjury and 6 month postinjury characteristics of the TOP cohort, including specifically for Māori (Indigenous population in Aotearoa me Te Waipounamu/NZ).

PARTICIPANTS

Between July 2019 and June 2020, 2533 NZ trauma patients were admitted to one of 22 hospitals nationwide for major trauma and included on the NZTR. TOP invited trauma patients (aged ≥16 years) to be interviewed from three regions; one region (Midlands) declined to participate. Interviews included questions about health-related quality of life, disability, injury recovery, healthcare access and household income adequacy.

FINDINGS TO DATE

TOP recruited 870 participants, including 119 Māori. At 6 months postinjury, most (85%) reported that the injury still affected them, 88% reported problems with≥1 of five EQ-5D-5L dimensions (eg, 75% reported problems with pain or discomfort, 71% reported problems with usual activities and 52% reported problems with mobility). Considerable disability (World Health Organization Disability Assessment Schedule, WHODAS II, score ≥10) was reported by 45% of participants. The prevalence of disability among Māori participants was 53%; for non-Māori it was 44%. Over a quarter of participants (28%) reported trouble accessing healthcare services for their injury. Participation in paid work decreased from 63% preinjury to 45% 6 months postinjury.

FUTURE PLANS

The 12 and 24 month postinjury data collection has recently been completed; analyses of 12 month outcomes are underway. There is potential for longer-term follow-up interviews with the existing cohort in future. TOP findings are intended to inform the National Trauma Network's quality improvement processes. TOP will identify key aspects that aid in improving postinjury outcomes for people experiencing serious injury, including importantly for Māori.

Trauma system establishment and outcome improvement: a retrospective national cohort study in South Korea

BACKGROUND

Trauma is a major cause of mortality, disability, and health care costs worldwide. The establishment of a trauma system is known to solve these problems, but few studies have objectively evaluated the impact of a trauma system on outcomes. Since 2012, South Korea has established a national trauma system based on the implementation of 17 regional trauma centers nationwide and the improvement of the prehospital transfer system. This study aimed to measure the changes in performance and outcome according to the established national trauma system.

MATERIAL AND METHODS

In this national cohort-based, retrospective follow-up observational study, the authors calculated the preventable trauma death rate (PTDR) by conducting a multipanel review of patients who died in 2015, 2017, and 2019. Furthermore, the authors constructed a risk-adjusted mortality prediction model of 4 767 876 patients between 2015 and 2019 using the extended-International Classification of Disease Injury Severity Scores to compare outcomes.

RESULTS

The PTDR was lower in 2019 than in 2015 (15.7 vs. 30.5, P <0.001) and 2017 (15.7 vs. 19.9%, P <0.001) representing 1247 additional lives saved in 2019 compared to that in 2015. In the risk-adjusted model, total trauma mortality was highest in 2015 at 0.56%, followed by that in 2016 and 2017 (0.50%), 2018 (0.51%), and 2019 (0.48%), revealing a significant decrease in mortality over the years ( P <0.001 for trend), representing nearly 800 additional lives saved. The number of deaths for more severe patients with a probability of survival less than 0.25 significantly decreased from 81.50% in 2015 to 66.17% in 2019 ( P <0.001).

CONCLUSIONS

The authors observed a significant reduction in the PTDR and risk-adjusted trauma mortality in the 5-year follow-up since 2015 when the national trauma system was established. These findings could serve as a model for low-income and middle-income countries, where trauma systems are not yet established.

Surgical stabilization of critical abdominal injuries in a mature rural trauma system: A retrospective study

BACKGROUND

Worse outcomes following injuries are more likely in rural versus urban areas. In 2001, our state established an inclusive trauma system to improve mortality. In 2015, the trauma system had a consultation visit from the American College of Surgeons' Committee on Trauma, who made several recommendations. We hypothesized that continued maturation of this system would lead to more laparotomies prior to transfer to a higher level of care and better outcomes.

METHODS

Our trauma registry was queried to identify all patients transferred between January 1, 2010, and December 31, 2020, who underwent laparotomy either before transfer or within 4 hours of arrival. The preconsultation (2010-2015) and postconsultation periods (2016-2020) were compared. Categorical and continuous variables were compared using χ2 and Mann-Whitney U tests, respectively.

RESULTS

We included 213 patients; 63 had laparotomy before transfer and 150 within 4 hours after transfer. Age, injury severity scores, systolic blood pressure, and mechanism of injury were not different between periods. Proportions of laparotomy before and after transfer and outcomes (mortality, hospital length of stay, intensive care unit length of stay, ventilator days) were also similar (p = 0.368 for laparotomy, p = 0.840, 0.124, 0.286, 0.822 for outcomes). Compared with the preconsultation period, the proportion of laparotomy performed before transfer for severe injuries (abdominal Abbreviated Injury Scale score >3) significantly increased postconsultation (57.1% vs. 30.6%, p = 0.011). Incidence of damage-control laparotomies (43.9% vs. 23.6%; p = 0.020) and transfusion of plasma and platelets (33.6% vs. 13.2%; p < 0.001, 22.4% vs. 8.5%, p = 0.007, respectively) significantly increased.

CONCLUSION

Identification and surgical stabilization of critical patients at the non-Level I facilities prior to transfer, as well as blood product use and damage-control techniques, improved postconsultation, suggesting a shift in the approaches to surgical stabilization and resuscitation efforts in our trauma system.

LEVEL OF EVIDENCE

Therapeutic/Care Management; Level IV.

The Impact of Trauma System Implementation on Patient Quality of Life and Economic Burden: A Systematic Review Study Protocol

Background

Trauma accounts for 10% of global mortality, with increasing rates disproportionally affecting low- and middle-income countries. In an attempt to improve clinical outcomes after injury, trauma systems have been implemented in multiple countries over recent years. However, whilst many studies have subsequently demonstrated improvements in overall mortality outcomes, less is known about the impact trauma systems have on morbidity, quality of life, and economic burden. This systematic review seeks to assess the existing evidence base for trauma systems with these outcome measures.

Methods

This review will include any study that assesses the impact implementation of a trauma system has on patient morbidity, quality of life, or economic burden. Any comparator study, including cohort, case-control, and randomised controlled studies, will be included, both retrospective or prospective in nature. Studies conducted from any region in the world and involving any age of patient will be included. We will collect data on any morbidity outcomes, health-related quality of life measures, or health economic assessments reported. We predict a high heterogeneity in these outcomes used and will therefore keep inclusion criteria broad.

Discussion

Previous reviews have shown the significant improvements that can be achieved in mortality outcomes with the implementation of an organised trauma system, however the wider impact they can have on morbidity outcomes, quality of life measures, and the economic burden of trauma, is less well described. This systematic review will present all available data on these outcomes, helping to better characterise both the societal and economic impact of trauma system implementation.

Highlights

Trauma systems are known to improve mortality rates, however less in known on the impact they have on morbidity outcomes, quality of life, and economic burdenWe aim to perform a systematic review to identify any comparator study that assesses the impact implementation of a trauma system on these outcomesUnderstanding the impact trauma systems can have on wider parameters, such as economic and quality of life outcomes, is crucial to allow governments globally to appropriately allocate often limited healthcare resources.PROSPERO registration number: CRD42022348529.

International Perspectives of Prehospital and Hospital Trauma Services: A Literature Review

Background: Evidence suggests that reductions in the incidence in trauma observed in some countries are related to interventions including legislation around road and vehicle safety measures, public behaviour change campaigns, and changes in trauma response systems. This study aims to briefly review recent refereed and grey literature about prehospital and hospital trauma care services in different regions around the world and describe similarities and differences in identified systems to demonstrate the diversity of characteristics present. Methods: Articles published between 2000 and 2020 were retrieved from MEDLINE and EMBASE. Since detailed comparable information was lacking in the published literature, prehospital emergency service providers’ annual performance reports from selected example countries or regions were reviewed to obtain additional information about the performance of prehospital care. Results: The review retained 34 studies from refereed literature related to trauma systems in different regions. In the U.S. and Canada, the trauma care facilities consisted of five different levels of trauma centres ranging from Level I to Level IV and Level I to Level V, respectively. Hospital care and organisation in Japan is different from the U.S. model, with no dedicated trauma centres; however, patients with severe injury are transported to university hospitals’ emergency departments. Other similarities and differences in regional examples were observed. Conclusions: The refereed literature was dominated by research from developed countries such as Australia, Canada, and the U.S., which all have organised trauma systems. Many European countries have implemented trauma systems between the 1990s and 2000s; however, some countries, such as France and Greece, are still forming an integrated system. This review aims to encourage countries with immature trauma systems to consider the similarities and differences in approaches of other countries to implementing a trauma system.

Evaluation of validity and reliability of video analysis and live observations to assess trauma team performance

INTRODUCTION

A trauma resuscitation is dynamic and complex process in which failures could lead to serious adverse events. In several trauma centers, evaluation of trauma resuscitation is part of a hospital's quality assessment program. While video analysis is commonly used, some hospitals use live observations, mainly due to ethical and medicolegal concerns. The aim of this study was to compare the validity and reliability of video analysis and live observations to evaluate trauma resuscitations.

METHODS

In this prospective observational study, validity was assessed by comparing the observed adherence to 28 advanced trauma life support (ATLS) guideline related tasks by video analysis to life observations. Interobserver reliability was assessed by calculating the intra class coefficient of observed ATLS related tasks by live observations and video analysis.

RESULTS

Eleven simulated and thirteen real-life resuscitations were assessed. Overall, the percentage of observed ATLS related tasks performed during simulated resuscitations was 10.4% (P < 0.001) higher when the same resuscitations were analysed using video compared to live observations. During real-life resuscitations, 8.7% (p < 0.001) more ATLS related tasks were observed using video review compared to live observations. In absolute terms, a mean of 2.9 (during simulated resuscitations) respectively 2.5 (during actual resuscitations) ATLS-related tasks per resuscitation were not identified using live observers, that were observed through video analysis. The interobserver variability for observed ATLS related tasks was significantly higher using video analysis compared to live observations for both simulated (video analysis: ICC 0.97; 95% CI 0.97-0.98 vs. live observation: ICC 0.69; 95% CI 0.57-0.78) and real-life witnessed resuscitations (video analyse 0.99; 95% CI 0.99-1.00 vs live observers 0.86; 95% CI 0.83-0.89).

CONCLUSION

Video analysis of trauma resuscitations may be more valid and reliable compared to evaluation by live observers. These outcomes may guide the debate to justify video review instead of live observations.

Quality Indicators Targeting Low-Value Clinical Practices in Trauma Care

Importance

The use of quality indicators has been shown to improve injury care processes and outcomes. However, trauma quality indicators proposed to date exclusively target the underuse of recommended practices. Initiatives such as Choosing Wisely publish lists of practices to be questioned, but few apply to trauma care, and most have not successfully been translated to quality indicators.

Objective

To develop a set of evidence and patient-informed, consensus-based quality indicators targeting reductions in low-value clinical practices in acute, in-hospital trauma care.

Design, Setting, and Participants

This 2-round Research and Development/University of California at Los Angeles (RAND/UCLA) consensus study, conducted from April 20 to June 9, 2021, comprised an online questionnaire and a virtual workshop led by 2 independent moderators. Two panels of international experts from Canada, Australia, the US, and the UK, and local stakeholders from Québec, Canada, represented key clinical expertise involved in trauma care and included 3 patient partners.

Main Outcomes and Measures

Panelists were asked to rate 50 practices on a 7-point Likert scale according to 4 quality indicator criteria: importance, supporting evidence, actionability, and measurability.

Results

Of 49 eligible experts approached, 46 (94%; 18 experts [39%] aged ≥50 years; 37 men [80%]) completed at least 1 round and 36 (73%) completed both rounds. Eleven quality indicators were selected overall, 2 more were selected by the international panel and a further 3 by the local stakeholder panel. Selected indicators targeted low-value clinical practices in the following aspects of trauma care: (1) initial diagnostic imaging (head, cervical spine, ankle, and pelvis), (2) repeated diagnostic imaging (posttransfer computed tomography [CT] and repeated head CT), (3) consultation (neurosurgical and spine), (4) surgery (penetrating neck injury), (5) blood product administration, (6) medication (antibiotic prophylaxis and late seizure prophylaxis), (7) trauma service admission (blunt abdominal trauma), (8) intensive care unit admission (mild complicated traumatic brain injury), and (9) routine blood work (minor orthopedic surgery).

Conclusions and Relevance

In this consensus study, a set of consensus-based quality indicators were developed that were informed by the best available evidence and patient priorities, targeting low-value trauma care. Selected indicators represented a trauma-specific list of practices, the use of which should be questioned. Trauma quality programs in high-income countries may use these study results as a basis to select context-specific quality indicators to measure and reduce low-value care.

Exploring Factors That Influence Injured Patients’ Outcomes following Road Traffic Crashes: A Multi-Site Feasibility Study

Background: Injuries arising from Road Traffic Crashes (RTCs) are a major health problem in Saudi Arabia (SA). The purpose of the study was to determine the feasibility of conducting a multi-center research study to explore factors that influence the mortality of RTC-related trauma patients in SA. Methods: A multi-center observational study was undertaken involving both prospective and retrospective data collected from three hospitals. In-hospital patient mortality thirty days post-crash was the primary outcome variable. The feasibility of the study methods including the quality of data were evaluated and pilot results pertaining to factors predicting mortality were examined. Results: The overall mortality rate (n = 572 RTC victims) was (7.5%). A logistic regression model identified four independent predictors of mortality following an RTC: treatment at a non-trauma center-based hospital, SBP ≤ 90 mmHg, GCS ≤ 8, and ISS ≥ 20. With respect to the assessment of the study method’s feasibility, missing data was problematic, especially for variables pertaining to crash characteristics and prehospital care. Conclusions: Collecting multi-center injury data in SA has logistic challenges, predominantly associated with the comparability and completeness of data sets as well as the need for manual screening and data collection at some institutions. Despite these limitations, this study has demonstrated the feasibility of a method that could be utilized in further large nationwide studies to understand and examine the factors that influence injured patients’ outcomes following RTCs.

National trauma system establishment based on implementation of regional trauma centers improves outcomes of trauma care: A follow-up observational study in South Korea

Although South Korea is a high-income country, its trauma system is comparable to low- and middle-income countries with high preventable trauma death rates of more than 30%. Since 2012, South Korea has established a national trauma system based on the implementation of regional trauma centers and improvement of the transfer system; this study aimed to evaluate its effectiveness. We compared the national preventable trauma death rates, transfer patterns, and outcomes between 2015 and 2017. The review of preventable trauma deaths was conducted by multiple panels, and a severity-adjusted logistic regression model was created to identify factors influencing the preventable trauma death rate. We also compared the number of trauma patients transferred to emergency medical institutions and mortality in models adjusted with injury severity scores. The preventable trauma death rate decreased from 2015 to 2017 (30.5% vs. 19.9%, p < 0.001). In the severity-adjusted model, the preventable trauma death risk had a lower odds ratio (0.68, 95% confidence interval: 0.53-0.87, p = 0.002) in 2017 than in 2015. Regional trauma centers received 1.6 times more severe cases in 2017 (according to the International Classification of Diseases Injury Severity Score [ICISS]; 23.1% vs. 36.5%). In the extended ICISS model, the overall trauma mortality decreased significantly from 2.1% (1008/47 806) to 1.9% (1062/55 057) (p = 0.041). The establishment of the national trauma system was associated with significant improvements in the performance and outcomes of trauma care. This was mainly because of the implementation of regional trauma centers and because more severe patients were transferred to regional trauma centers. This study might be a good model for low- and middle-income countries, which lack a trauma system.

Comparison of physical and psychological health outcomes for motorcyclists and other road users after land transport crashes: an inception cohort study

BACKGROUND

Serious injuries and fatalities among vulnerable road users on two wheeled motorised vehicles have increased across Australia and internationally in the past decade yet fallen for motor vehicle occupants. Almost half of all reported motorcycle injury crashes cause serious injury or death, nearly double that of motor vehicle police-reported crashes. This study explores associations with sociodemographic and pre-injury health characteristics and health outcomes after a road traffic injury; aiming to compare motorcyclists with other road users and inform recovery care.

METHODS

An inception cohort study recruited 1854 individuals aged > 17 years, injured following land-transport crashes in New South Wales, Australia (July 2013-November 2016). Interviews conducted at baseline, 6-and 12-months post-injury elicited demographic, socioeconomic, and self-reported health conditions.

RESULTS

Primary analysis involved 1854 participants who were recruited at baseline as three distinct road user groups; 628 (33.9%) motorcyclists, 927 (50%) vehicle occupants and 299 (16.1%) bicyclists. At baseline, injury patterns differed significantly between road user groups; motorcyclists were more than twice as likely to sustain lower extremity injury (p < 0.001); to have more severe injury severity scores (p < 0.001) and longer hospital stays versus vs vehicle occupants and bicyclists (< 0.001) across these measures. Injured motorcyclists were predominantly male (88.1%, p < 0.001), were younger on average (38 years) than bicyclists (41.5 years), had lower income and education levels, and poorer pre-injury physical health than other road user groups. Despite these differences, at 12 months post-injury motorcyclists had better physical health (SF12-PCS 2.07 (0.77, 3.36), p = 0.002) and reported lower pain scores (- 0.51 (- 0.83, - 0.2), p < 0.001) than vehicle occupants. Motorcyclists displayed less evidence of psychological distress than vehicle occupants, but more than bicyclists across several measures used.

CONCLUSIONS

Road user types differ in important characteristics, including pre-injury health status and recovery after injury. As vulnerable road users experiencing transport crash and considering their higher initial injury severity, the degree of recovery among motorcyclists compared with other user types is remarkable and unexplained. Health and recovery outcomes after land-transport crashes is least favourable among vehicle occupants despite their higher levels of protection in a crash. This information is valuable for targeting early intervention strategies by road user type during the post-crash care phase, to improve long-term recovery.

Factors Affecting Death and Severe Injury in Child Motor Vehicle Passengers

Saving children from motor vehicle collisions is a high priority because the injury rate among motor vehicle passengers has been increasing in Japan. This study aimed to examine the factors that influence death and serious injury in child motor vehicle passengers to establish effective preventive measures. To identify these factors, we performed a retrospective study using a nationwide medical database. The data of child motor vehicle passengers younger than 15 years (n = 1084) were obtained from the Japanese Trauma Data Bank, registered from 2004 to 2019. Physiological variables, outcomes, and injury severity were compared between fatal and non-fatal patients and between those with and without severe injuries. Multivariate logistic regression analysis was performed to determine factors affecting fatality and severe injury. The Glasgow Coma Scale score (odds ratio (OR): 1.964), body temperature (OR: 2.578), and the Abbreviated Injury Scale score of the head (OR: 0.287) were identified as independent predictors of a non-fatal outcome. Systolic blood pressure (OR: 1.012), the Glasgow Coma Scale score (OR: 0.705), and Focused Assessment with Sonography for Trauma positivity (OR: 3.236) were identified as independent predictors of having severe injury. Decreasing the severity of head injury is the highest priority for child motor vehicle passengers to prevent fatality and severe injury.

The effectiveness of trauma care systems at different stages of development in reducing mortality: a systematic review and meta-analysis

BACKGROUND

Traumatic injury remains the leading cause of death, with more than five million deaths every year. Little is known about the comparative effectiveness in reducing mortality of trauma care systems at different stages of development. The objective of this study was to review the literature and examine differences in mortality associated with different stages of trauma system development.

METHOD

A systematic review of peer-reviewed population-based studies retrieved from MEDLINE, EMBASE, and CINAHL. Additional studies were identified from references of articles, through database searching, and author lists. Articles written in English and published between 2000 and 2020 were included. Selection of studies, data extraction, and quality assessment of the included studies were performed by two independent reviewers. The results were reported as odds ratio (OR) with 95 % confidence intervals (CI).

RESULTS

A total of 52 studies with a combined 1,106,431 traumatic injury patients were included for quantitative analysis. The overall mortality rate was 6.77% (n = 74,930). When patients were treated in a non-trauma centre compared to a trauma centre, the pooled statistical odds of mortality were reduced (OR 0.74 [95% CI 0.69-0.79]; p < 0.001). When patients were treated in a non-trauma system compared to a trauma system the odds of mortality rates increased (OR 1.17 [95% CI 1.10-1.24]; p < 0.001). When patients were treated in a post-implementation/initial system compared to a mature system, odds of mortality were significantly higher (OR 1.46 [95% CI 1.37-1.55]; p < 0.001).

CONCLUSION

The present study highlights that the survival of traumatic injured patients varies according to the stage of trauma system development in which the patient was treated. The analysis indicates a significant reduction in mortality following the introduction of the trauma system which is further enhanced as the system matures. These results provide evidence to support efforts to, firstly, implement trauma systems in countries currently without and, secondly, to enhance existing systems by investing in system development.

SYSTEMATIC REVIEW REGISTRATION NUMBER

PROSPERO CRD42019142842 .

Effectiveness of trauma care systems at different stages of development in reducing mortality: a systematic review and meta-analysis protocol

INTRODUCTION

The introduction of trauma systems that began in the 1970s resulted in improved trauma care and a decreased rate of morbidity and mortality of trauma patients. Worldwide, little is known about the effectiveness of trauma care system at different stages of development, from establishing a trauma centre, to implementing a trauma system and as trauma systems mature. The objective of this study is to extract and analyse data from research that evaluates mortality rates according to different stages of trauma system development globally.

METHODS AND ANALYSIS

The proposed review will comply with the checklist of the 'Preferred reporting items for systematic review and meta-analysis'. In this review, only peer-reviewed articles written in English, human-related studies and published between January 2000 and December 2020 will be included. Articles will be retrieved from MEDLINE, EMBASE and CINAHL. Additional articles will be identified from other sources such as references of included articles and author lists. Two independent authors will assess the eligibility of studies as well as critically appraise and assess the methodological quality of all included studies using the Cochrane Risk of Bias for Non-randomised Studies of Interventions tool. Two independent authors will extract the data to minimise errors and bias during the process of data extraction using an extraction tool developed by the authors. For analysis calculation, effect sizes will be expressed as risk ratios or ORs for dichotomous data or weighted (or standardised) mean differences and 95% CIs for continuous data in this systematic review.

ETHICS AND DISSEMINATION

This systematic review will use secondary data only, therefore, research ethics approval is not required. The results from this study will be submitted to a peer-review journal for publication and we will present our findings at national and international conferences.

PROSPERO REGISTRATION NUMBER

CRD42019142842.

Development and Validation of a Hospital Indicator of Activity-Based Costs for Injury Admissions

OBJECTIVES

To develop a hospital indicator of resource use for injury admissions.

METHODS

We focused on resource use for acute injury care and therefore adopted a hospital perspective. We included patients ≥16 years old with an Injury Severity Score >9 admitted to any of the 57 trauma centers of an inclusive Canadian trauma system from 2014 to 2018. We extracted data from the trauma registry and hospital financial reports and estimated resource use with activity-based costing. We developed risk-adjustment models by trauma center designation level (I/II and III/IV) for the whole sample, traumatic brain injuries, thoraco-abdominal injuries, orthopedic injuries, and patients ≥65 years old. Candidate variables were selected using bootstrap resampling. We performed benchmarking by comparing the adjusted mean cost in each center, obtained using shrinkage estimates, to the provincial mean.

RESULTS

We included 38 713 patients. The models explained between 12% and 36% (optimism-corrected r²) of the variation in resource use. In the whole sample and in all subgroups, we identified centers with higher- or lower-than-expected resource use across level I/II and III/IV centers.

CONCLUSIONS

We propose an algorithm to produce the indicator using data routinely collected in trauma registries to prompt targeted exploration of potential areas for improvement in resource use for injury admissions. The r² of our models suggest that between 64% and 88% of the variation in resource use for injury care is dictated by factors other than patient baseline risk.

Impact of trauma centre accreditation on mortality and complications in a Canadian trauma system: an interrupted time series analysis

BACKGROUND

Periodic external accreditation visits aiming to determine whether trauma centres are fulfilling the criteria for optimal care are part of most trauma systems. However, despite the growing trend towards accreditation of trauma centres, its impact on patient outcomes remains unclear. In addition, a recent systematic review found inconsistent results on the association between accreditation and patient outcomes, mostly due to the lack of robust controls. We aim to address these gaps by assessing the impact of trauma centre accreditation on patient outcomes, specifically in-hospital mortality and complications, using an interrupted time series (ITS) design.

METHODS

We included all major trauma admissions to five level I and four level II trauma centres in Quebec, Canada between 2008 and 2017. In order to perform ITS, we first obtained monthly and quarterly estimates of the proportions of in-hospital mortality and complications, respectively, for level I and level II centres. Prognostic scores were used to standardise these proportions to account for changes in patient case mix and segmented regressions with autocorrelated errors were used to estimate changes in levels and trends in both outcomes following accreditation.

RESULTS

There were 51 035 admissions, including 20 165 for major trauma during the study period. After accounting for changes in patient case mix and secular trend in studied outcomes, we globally did not observe an association between accreditation and patient outcomes. However, associations were heterogeneous across centres. For example, in a level II centre with worsening preaccreditation outcomes, accreditation led to -9.08 (95% CI -13.29 to -4.87) and -9.60 (95% CI -15.77 to -3.43) percentage point reductions in mortality and complications, respectively.

CONCLUSION

Accreditation seemed to be beneficial for centres that were experiencing a decrease in performance preceding accreditation.

Maximizing the potential of trauma registries in low-income and middle-income countries

Injury is a major global health issue, resulting in millions of deaths every year. For decades, trauma registries have been used in wealthier countries for injury surveillance and clinical governance, but their adoption has lagged in low-income and middle-income countries (LMICs). Paradoxically, LMICs face a disproportionately high burden of injury with few resources available to address this pandemic. Despite these resource constraints, several hospitals and regions in LMICs have managed to develop trauma registries to collect information related to the injury event, process of care, and outcome of the injured patient. While the implementation of these trauma registries is a positive step forward in addressing the injury burden in LMICs, numerous challenges still stand in the way of maximizing the potential of trauma registries to inform injury prevention, mitigation, and improve quality of trauma care. This paper outlines several of these challenges and identifies potential solutions that can be adopted to improve the functionality of trauma registries in resource-poor contexts. Increased recognition and support for trauma registry development and improvement in LMICs is critical to reducing the burden of injury in these settings.

Factors influencing vehicle passenger fatality have changed over 10 years: a nationwide hospital-based study

Traffic injury trends have changed with safety developments. To establish effective preventive measures against traffic fatalities, the factors influencing fatalities must be understood. The present study evaluated data from a national medical database to determine the changes in these factors over time, as this has not been previously investigated. This observational study retrospectively analysed data from the Japanese Trauma Data Bank. Vehicle passengers involved in collisions from 2004–2008 and 2016–2017 were included. Data were compared between the two study periods, and between fatal and non-fatal patients within each period. Multivariate logistic regression analyses were performed to determine the factors influencing fatalities. In 2016–2017, patients were older and had lower fatality rates. In 2004–2008, fatalities were more likely to involve older male front-seat passengers with low d-BP, BT, and GCS values, and high AIS of the neck and abdomen. However, in 2016–2017, fatalities were more likely to involve older males with low GCS, high AIS of the abdomen, and positive focused assessment with sonography for trauma results. Our study identified independent factors influencing vehicle passenger fatalities, which will likely continue to evolve with the aging of the population and changing manners of injury.

Trends of clinical outcomes in patients with a Traumatic Brain Injury (TBI) in Canada between 2006 and 2012

BACKGROUND

Traumatic brain injuries (TBI) are the leading cause of death for people aged <40 years. In Canada, the structure of trauma care has evolved independently across provinces during the last decade. However, little is known about the evolution of clinical outcomes. We aimed to compare trends in hospital mortality, unplanned readmission, hospital length of stay (LOS) and intensive care unit (ICU) LOS for TBI between 2006 and 2012 across Canadian provinces.

METHODS

We conducted a retrospective multicentre cohort study based on TBI admissions across Canadian level I and II trauma centres. Data were extracted from the National Trauma Registry linked to hospital discharge databases. All adults with an injury severity score ≥12 were included. Multilevel generalized linear models were used to evaluate trends in clinical outcomes.

RESULTS

Between 2006 and 2012, we observed a decrease in mortality in Canada (odd ratio [OR] = 0.95; 95% confidence intervals [CI] = 0.92-0.98) mostly driven by Ontario (OR = 0.95; 95% CI = 0.93-0.98). We observed a significant decrease in hospital length of stay in Canada (hazard ratio [HR]: hazard of being discharged alive from hospital = 1.02; 95% CI = 1.01-1.02) mostly driven by a decrease in Quebec (HR = 1.03; 95% CI = 1.01-1.04). We observed a decrease in ICU Length of stay only in Alberta (HR = 1.05; 95% CI = 1.01-1.09). No trend was observed for hospital readmissions.

CONCLUSION

We observed significant decreases in mortality, hospital and ICU length of stay for TBI in Canada between 2006 and 2012 but only in certain provinces. This study may represent the first step towards a better understanding of the influence of trauma system configuration on the burden of injuries in Canada.

Effectiveness of trauma centers verification: Protocol for a systematic review

BACKGROUND

The implementation of trauma systems in many high-income countries over the last 50 years has led to important reductions in injury mortality and disability in many healthcare jurisdictions. Injury organizations including the American College of Surgeons and the Trauma Association of Canada as well as the World Health Organization provide consensus-based recommendations on resources and processes for optimal injury care. Many hospitals treating trauma patients seek verification to demonstrate that they meet these recommendations. This process may be labeled differently across jurisdictions. In Canada for example, it is called accreditation, but it has the same objective and very similar modalities. The objective of the study described in this protocol is to systematically review evidence on the effectiveness of trauma center verification for improving clinical processes and patient outcomes in injury care.

METHODS

We will perform a systematic review of studies evaluating the association between trauma center verification and hospital mortality (primary outcome), as well as morbidity, resource utilization, and processes of care (secondary outcomes). We will search CINAHL, EMBASE, HealthStar, MEDLINE, and ProQuest databases, as well as key injury organization websites for gray literature. We will assess the methodological quality of studies using the Risk Of Bias In Non-randomized Studies - of Interventions (ROBINS-I) assessment tool. We are planning to conduct a meta-analysis if feasible based on the number of included studies and their heterogeneity. We will evaluate the quality of cumulative evidence and strength of recommendations using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) working group methodology.

DISCUSSION

This review will provide a synthesis of the body of evidence on trauma center verification effectiveness. Results could reinforce current verification modalities and may suggest ways to optimize them. Results will be published in a peer-reviewed journal and presented at an international clinical conference.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO CRD42018107083.

Trauma registry implementation and operation in low and middle income countries: A scoping review

Injury is a major public health crisis contributing to more than 4.48 million deaths annually. Trauma registries have proven highly effective in reducing injury morbidity and mortality rates in high income countries. They are a critical source of information for injury prevention, benchmarking care, quality improvement, and resource allocation. Historically, low and middle income countries (LMICs) have largely been excluded from trauma registry development due to limited resources. Recently, this has begun to change with low-resource hospitals adopting innovative strategies to implement trauma registries. Nonetheless, dissemination of these strategies remains fragmented. Hospitals looking to develop their own trauma registries have no current, comprehensive resource that summarises the implementation decisions of other registries in similar contexts. This scoping review aims to identify where trauma registries are located in LMICs, bringing up to date previous estimates, and to identify the most common approaches to registry implementation and operation in these settings.

Profile of trauma mortality and trauma care resources at rural emergency departments and urban trauma centres in Quebec: a population-based, retrospective cohort study

OBJECTIVES

As Canada's second largest province, the geography of Quebec poses unique challenges for trauma management. Our primary objective was to compare mortality rates between trauma patients treated at rural emergency departments (EDs) and urban trauma centres in Quebec. As a secondary objective, we compared the availability of trauma care resources and services between these two settings.

DESIGN

Retrospective cohort study.

SETTING

26 rural EDs and 33 level 1 and 2 urban trauma centres in Quebec, Canada.

PARTICIPANTS

79 957 trauma cases collected from Quebec's trauma registry.

PRIMARY AND SECONDARY OUTCOME MEASURES

Our primary outcome measure was mortality (prehospital, ED, in-hospital). Secondary outcome measures were the availability of trauma-related services and staff specialties at rural and urban facilities. Multivariable generalised linear mixed models were used to determine the relationship between the primary facility and mortality.

RESULTS

Overall, 7215 (9.0%) trauma patients were treated in a rural ED and 72 742 (91.0%) received treatment at an urban centre. Mortality rates were higher in rural EDs compared with urban trauma centres (13.3% vs 7.9%, p<0.001). After controlling for available potential confounders, the odds of prehospital or ED mortality were over three times greater for patients treated in a rural ED (OR 3.44, 95% CI 1.88 to 6.28). Trauma care setting (rural vs urban) was not associated with in-hospital mortality. Nearly all of the specialised services evaluated were more present at urban trauma centres.

CONCLUSIONS

Trauma patients treated in rural EDs had a higher mortality rate and were more likely to die prehospital or in the ED compared with patients treated at an urban trauma centre. Our results were limited by a lack of accurate prehospital times in the trauma registry.

Impact of Trauma System Structure on Injury Outcomes: A Systematic Review and Meta-Analysis

BACKGROUND

The effectiveness of trauma systems in decreasing injury mortality and morbidity has been well demonstrated. However, little is known about which components contribute to their effectiveness. We aimed to systematically review the evidence of the impact of trauma system components on clinically important injury outcomes.

METHODS

We searched MEDLINE, EMBASE, Cochrane CENTRAL, and BIOSIS/Web of Knowledge, gray literature and trauma association Web sites to identify studies evaluating the association between at least one trauma system component and injury outcome. We calculated pooled effect estimates using inverse-variance random-effects models. We evaluated quality of evidence using GRADE criteria.

RESULTS

We screened 15,974 records, retaining 41 studies for qualitative synthesis and 19 for meta-analysis. Two recommended trauma system components were associated with reduced odds of mortality: inclusive design (odds ratio [OR] = 0.72 [0.65-0.80]) and helicopter transport (OR = 0.70 [0.55-0.88]). Pre-Hospital Advanced Trauma Life Support was associated with a significant reduction in hospital days (mean difference [MD] = 5.7 [4.4-7.0]) but a nonsignificant reduction in mortality (OR = 0.78 [0.44-1.39]). Population density of surgeons was associated with a nonsignificant decrease in mortality (MD = 0.58 [-0.22 to 1.39]). Trauma system maturity was associated with a significant reduction in mortality (OR = 0.76 [0.68-0.85]). Quality of evidence was low or very low for mortality and healthcare utilization.

CONCLUSIONS

This review offers low-quality evidence for the effectiveness of an inclusive design and trauma system maturity and very-low-quality evidence for helicopter transport in reducing injury mortality. Further research should evaluate other recommended components of trauma systems and non-fatal outcomes and explore the impact of system component interactions.

Comparison of outcomes in severely injured patients between a South Korean trauma center and matched patients treated in the United States

BACKGROUND

The South Korean government recently developed a master plan for establishing a national trauma system based on the implementation of regional trauma centers. We aimed to compare outcomes between severely injured patients treated at a recently established South Korean trauma center and matched patients treated in American level-1 trauma centers.

METHODS

Two cohorts were selected from an institutional trauma database at Ajou University Medical Center (AUMC) and the American National Trauma Data Bank. Adult patients with an Injury Severity Score of ≥9 were included. Patients were matched based on covariates that affect mortality, using 1:1 propensity score matching. We compared outcomes between the two datasets and performed survival analyses.

RESULTS

We created 1,451 and 2,103 matched pairs for the pre-trauma center and post-trauma center periods, respectively. The in-hospital mortality rate was higher in the institutional trauma database pre-trauma center period compared with the American National Trauma Data Bank (11.6% versus 8.1%, P<.001). However, the mortality rate decreased in the institutional trauma database post-trauma center period and was similar to that in the American National Trauma Data Bank (6.9% versus 6.8%, P=.903). Being treated at Ajou University Medical Center Trauma Center was significantly associated with higher mortality during the pre-trauma center period (OR: 1.842, 95% CI: 1.336-2.540; P<.001), although no significant association was observed during the post-trauma center period (OR: 1.102, 95% CI: 0.827-1.468; P=.509).

CONCLUSION

The mortality rate improved after a trauma center was established in a South Korean hospital and is similar to that from matched cases treated at American level-1 trauma centers. Thus, creating trauma centers and a regional trauma system may improve outcomes in major trauma cases.

Evaluating the need to reform the organisation of care for major trauma patients in Belgium: an analysis of administrative databases

PURPOSE

In light of the international evolutions to establish inclusive trauma systems and to concentrate the care for the most severely injured in major trauma centres, we evaluated the degree of dispersion of trauma care in Belgium.

METHODS

We used descriptive statistics to illustrate the dispersion of major trauma care in Belgium based on two independent administrative databases: the registry of Mobile Intensive Care Units (2009-2015) and the Belgian Hospital Discharge Dataset (2009-2014).

RESULTS

Patients with a severe trauma (n = 3856 in 2015) were transported towards 145 different hospital sites (on a total of 198 hospital sites) resulting in a median of 17 cases per hospital site (min = 1; P25 = 4; P75 = 30; max = 165). A minority of major trauma patients is after admission transferred to another hospital (8%) with a median of 10 days after admission to the hospital (IQR 3.5-24).

CONCLUSIONS

The dispersion of care for major trauma patients in Belgium is so high that a reorganisation of care for severe injured patients in major trauma centres concentrating professional expertise and specialised equipment is recommended to guarantee a high quality of care in a qualitative and sustainable way.

Ten-year inhospital mortality trends for patients with trauma in Japan: a multicentre observational study

OBJECTIVES

Trauma is one of the main causes of death in Japan, and treatments and prognoses of these injuries are constantly changing. We therefore aimed to investigate a 10-year trend (2004-2013) in inhospital mortality among patients with trauma in Japan.

DESIGN

Multicentre observational study.

SETTING

Japanese nationwide trauma registry (the Japan Trauma Data Bank) data.

PARTICIPANTS

All patients with trauma whose Injury Severity Score (ISS) were 3 and above, who were aged 15 years or older, and whose mechanisms of injury (MOI) were blunt and penetrating between 2004 and 2013 (n=90 833).

OUTCOME MEASURES

A 10-year trend in inhospital mortality.

RESULTS

Inhospital mortality for all patients with trauma significantly decreased over the study decade in our Cochran-Armitage test (P<0.001). Similarly, inhospital mortality for patients with ISS 16 or more and patients who scored 50% or better on the Trauma and Injury Severity Score (TRISS) probability of survival scale significantly decreased (P<0.001). In addition, the OR for inhospital mortality of these three patient groups decreased yearly after adjusting for age, gender, MOI, ISS, Glasgow Coma Scale, systolic blood pressure and respiratory rate on hospital arrival in multivariable logistic regression analyses. Furthermore, inhospital mortality for patient with blunt trauma significantly decreased in injury mechanism-stratified Mantel-extension testing (P<0.001). Finally, multivariable logistic regression analyses showed that the OR for inhospital mortality of patients with ISS 16 and over decreased each year after adding and adjusting for means of transportation and usage of whole-body CT.

CONCLUSION

Inhospital mortality for patients with trauma in Japan significantly decreased during the study decade after adjusting for patient characteristics, injury severity and the response environment after injury.

Canadian benchmarks for acute injury care

BACKGROUND

Acute care injury outcomes vary substantially across Canadian provinces and trauma centres. Our aim was to develop Canadian benchmarks to monitor mortality and hospital length of stay (LOS) for injury admissions.

METHODS

Benchmarks were derived using data from the Canadian National Trauma Registry on patients with major trauma admitted to any level I or II trauma centre in Canada and from the following patient subgroups: isolated traumatic brain injury (TBI), isolated thoracoabdominal injury, multisystem blunt injury, age 65 years or older. We assessed predictive validity using measures of discrimination and calibration, and performed sensitivity analyses to assess the impact of replacing analytically complex methods (multiple imputation, shrinkage estimates and flexible modelling) with simple models that can be implemented locally.

RESULTS

The mortality risk adjustment model had excellent discrimination and calibration (area under the receiver operating characteristic curve 0.886, Hosmer-Lemeshow 36). The LOS risk-adjustment model predicted 29% of the variation in LOS. Overall, observed:expected ratios of mortality and mean LOS generated by an analytically simple model correlated strongly with those generated by analytically complex models (r > 0.95, κ on outliers > 0.90).

CONCLUSION

We propose Canadian benchmarks that can be used to monitor quality of care in Canadian trauma centres using Excel (see the appendices, available at canjsurg.ca). The program can be implemented using local trauma registries, providing that at least 100 patients are available for analysis.

Traumatic Spinal Cord Injury Care in Canada: A Survey of Canadian Centers

Specialized centers of care for persons sustaining a traumatic spinal cord injury (tSCI) have been established in many countries, but the ideal system of care has not been defined. The objective of this study was to describe care delivery, with a focus on structures and services, for persons with tSCI in Canada. A survey was sent to 26 facilities (12 acute, 11 rehabilitation, and three integrated) from eight provinces participating in the Access to Care and Timing project. The survey included questions about: 1) care provision; 2) structural attributes and; 3) service availability. Survey completion rate was 100%. Data sources used to complete the survey were the Rick Hansen Spinal Cord Injury Registry, other hospital databases, clinical protocols, and subject matter experts. Acute and rehabilitation care provided by integrated facilities were described separately, resulting in data from 15 acute and 14 rehabilitation facilities. The number of admissions for tSCI over a 12-month period between 2009-2011 ranged from 17 to 104 (median 39), and 11 to 96 (median 32), for acute and rehabilitation facilities, respectively. Grouping of patients was reported by 8/15 acute and 10/14 rehabilitation facilities. Criteria for admission to the inpatient rehabilitation facilities varied among facilities (25 different criteria reported). Results from the survey revealed similarities in the basic structure and the provision of general services, but also some differences in the degree of specialization of care for persons with tSCI. Continued work on the impact of specialized care for both the patient and healthcare system is needed.

The research agenda for trauma critical care

In this research agenda on the acute and critical care management of trauma patients, we concentrate on the major factors leading to death, namely haemorrhage and traumatic brain injury (TBI). In haemostasis biology, the results of randomised controlled trials have led to the therapeutic focus moving away from the augmentation of coagulation factors (such as recombinant factor VIIa) and towards fibrinogen supplementation and administration of antifibrinolytics such as tranexamic acid. Novel diagnostic techniques need to be evaluated to determine whether an individualised precision approach is superior to current empirical practice. The timing and efficacy of platelet transfusions remain in question, while new blood products need to be developed and evaluated, including whole blood variants, lyophilised products and novel red cell storage modalities. The current cornerstones of TBI management are intracranial pressure control, maintenance of cerebral perfusion pressure and avoidance of secondary insults (such as hypotension, hypoxaemia, hyperglycaemia and pyrexia). Therapeutic hypothermia and decompressive craniectomy are controversial therapies. Further research into these strategies should focus on identifying which subgroups of patients may benefit from these interventions. Prediction of the long-term outcome early after TBI remains challenging. Early magnetic resonance imaging has recently been evaluated for predicting the long-term outcome in mild and severe TBI. Novel biomarkers may also help in outcome prediction and may predict chronic neurological symptoms. For trauma in general, rehabilitation is complex and multidimensional, and the optimal timing for commencement of rehabilitation needs investigation. We propose priority areas for clinical trials in the next 10 years.

SHAPING QUALITY THROUGH VISION, STRUCTURE, AND MONITORING OF PERFORMANCE AND QUALITY INDICATORS: IMPACT STORY FROM THE QUEBEC TRAUMA NETWORK

Objectives: The Quebec Trauma Care Continuum (TCC) was initiated in 1991 with the objective of providing accessible, continuous, efficient, and high quality services for all injury cases in the province.

Methods: The TCC design relied on three key components: (i) the designation of a network of acute care and rehabilitation facilities with specific mandates and responsibilities; (ii) the elaboration of transfer protocols, standing agreements, and governing structures to ensure fluid and optimal patient flow; and (iii) the close monitoring of several indicators to facilitate the continuous evaluation and improvement of the network.

Results: Between 1992 and 2002, in-hospital mortality following major trauma decreased from 51.8 percent to 8.6 percent, followed by an additional 24 percent drop between 1999 and 2012. We also observed a 16 percent decrease in average LOS but no change in the incidence of complications or unplanned readmissions. These changes translate into 186 lives saved per year and cost savings, due to shorter LOS, of 6.3 million CD$ per year. The risk-adjusted incidence of in-hospital mortality following major injury between 2006 and 2012 (7 percent) was the lowest of all Canadian provinces.

Conclusions: Strategic transformation of a network's structure and processes, supported by continuous monitoring of validated quality indicators, can lead to significant and sustainable improvements in clinical outcomes. It is hoped that the Quebec trauma story will inspire other jurisdictions and other healthcare sectors.

Impact of trauma system structure on injury outcomes: a systematic review protocol

BACKGROUND

Injury represents one of the greatest public health challenges of our time with over 5 million deaths and 100 million people temporarily or permanently disabled every year worldwide. The effectiveness of trauma systems in decreasing injury mortality and morbidity has been well demonstrated. However, the organisation of trauma care varies significantly across trauma systems and we know little about which components of trauma systems contribute to their effectiveness. The objective of the study described in this protocol is to systematically review evidence of the impact of trauma system components on clinically significant outcomes including mortality, function and disability, quality of life, and resource utilization.

METHODS

We will perform a systematic review of studies evaluating the association between at least one trauma system component (e.g. accreditation by a central agency, interfacility transfer agreements) and at least one injury outcome (e.g. mortality, disability, resource use). We will search MEDLINE, EMBASE, COCHRANE central, and BIOSIS/Web of Knowledge databases, thesis holdings, key injury organisation websites and conference proceedings for eligible studies. Pairs of independent reviewers will evaluate studies for eligibility and extract data from included articles. Methodological quality will be evaluated using elements of the ROBINS-I tool and the Cochrane risk of bias tool for non-randomized and randomized studies, respectively. Strength of evidence will be evaluated using the GRADE tool.

DISCUSSION

We expect to advance knowledge on the components of trauma systems that contribute to their effectiveness. This may lead to recommendations on trauma system structure that will help policy-makers make informed decisions as to where resources should be focused. The review may also lead to specific recommendations for future research efforts.

SYSTEMATIC REVIEW REGISTRATION

This protocol was registered with the International Prospective Register of Systematic Reviews (PROSPERO) on 28-06-2016. PROSPERO 2016:CRD42016041336 Available from http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42016041336 .

Role of trauma team activation in poor outcomes of elderly patients

INTRODUCTION

Elderly trauma patients suffer worse outcomes than younger patients. Trauma team activation (TTA) improves outcomes in younger patients. It is unclear whether decreased TTA effectiveness or under-activation in elderly patients could contribute to their poor outcomes.

MATERIAL AND METHODS

This retrospective registry study examined all adult trauma patients admitted to a level 1 trauma center over 2 y. Analyses tested (1) whether age modifies the effect of TTA on poor outcomes, (2) whether elderly patients with severe injury were less likely to receive TTA than younger patients, and (3) which early variables were associated with poor outcomes among elderly patients who did not receive TTA.

RESULTS

The study included 10,033 patients. The adjusted relative risk from TTA for all ages was 0.48 (95% confidence interval (CI) = 0.34-0.68, P < 0.001), and there was no effect modification by age (interaction term P value, 0.171). The adjusted odds ratio for the young was 0.49 (95% CI = 0.26-0.91, P = 0.024) and for the elderly was 0.80 (95% CI = 0.53-1.20, P = 0.282). The adjusted odds ratio for lack of TTA associated with old age was 1.37 (95% CI = 1.12-1.69, P = 0.003). The strongest associations with poor outcomes were seen with low heart rate, low minimum blood pressure, high injury severity score, and high Glasgow coma score.

CONCLUSIONS

Lack of TTA could contribute to elderly patients' poor outcomes. Clinicians should not be reassured by normal heart rates and should be wary of even transiently lower blood pressures in the elderly. A large cohort study is needed to identify which additional elderly patients could benefit from TTA.