The association between hospital arrival time, transport method, prehospital time intervals, and in-hospital mortality in trauma patients presenting to Khayelitsha Hospital, Cape Town

Association of freeze-dried plasma with 24-h mortality among trauma patients at risk for hemorrhage

BACKGROUND

Blood products form the cornerstone of contemporary hemorrhage control but are limited resources. Freeze-dried plasma (FDP), which contains coagulation factors, is a promising adjunct in hemostatic resuscitation. We explore the association between FDP alone or in combination with other blood products on 24-h mortality.

STUDY DESIGN AND METHODS

This is a secondary data analysis from a cross-sectional prospective observational multicenter study of adult trauma patients in the Western Cape of South Africa. We compare mortality among trauma patients at risk of hemorrhage in three treatment groups: Blood Products only, FDP + Blood Products, and FDP only. We apply inverse probability of treatment weighting and fit a multivariable Cox proportional hazards model to assess the hazard of 24-h mortality.

RESULTS

Four hundred and forty-eight patients were included, and 55 (12.2%) died within 24 h of hospital arrival. Compared to the Blood Products only group, we found no difference in 24-h mortality for the FDP + Blood Product group (p = .40) and a lower hazard of death for the FDP only group (hazard = 0.38; 95% CI, 0.15-1.00; p = .05). However, sensitivity analyses showed no difference in 24-h mortality across treatments in subgroups with moderate and severe shock, early blood product administration, and accounting for immortal time bias.

CONCLUSION

We found insufficient evidence to conclude there is a difference in relative 24-h mortality among trauma patients at risk for hemorrhage who received FDP alone, blood products alone, or blood products with FDP. There may be an adjunctive role for FDP in hemorrhagic shock resuscitation in settings with significantly restricted access to blood products.

The Effect of Prehospital Clinical Trial-Related Procedures on Scene Interval, Cognitive Load, and Error: A Randomized Simulation Study

INTRODUCTION

Globally, very few settings have undertaken prehospital randomized controlled trials. Given this lack of experience, there is a risk that such trials in these settings may result in protocol deviations, increased prehospital intervals, and increased cognitive load, leading to error. Ultimately, this may affect patient safety and mortality. The aim of this study was to assess the effect of trial-related procedures on simulated scene interval, self-reported cognitive load, medical errors, and time to action.

METHODS

This was a prospective simulation study. Using a cross-over design, ten teams of prehospital clinicians were allocated to three separate simulation arms in a random order. Simulations were: (1) Eligibility assessment and administration of freeze-dried plasma (FDP) and a hemoglobin-based oxygen carrier (HBOC), (2) Eligibility assessment and administration of HBOC, (3) Eligibility assessment and standard care. All simulations also required clinical management of hemorrhagic shock. Simulated scene interval, error rates, cognitive load (measured by NASA Task Load Index), and competency in clinical care (assessed using the Simulation Assessment Tool Limiting Assessment Bias (SATLAB)) were measured. Mean differences between simulations with and without trial-related procedures were sought using one-way ANOVA or Kruskal-Wallis test. A p-value of <0.05 within the 95% confidence interval was considered significant.

RESULTS

Thirty simulations were undertaken, representing our powered sample size. The mean scene intervals were 00:16:56 for Simulation 1 (FDP and HBOC), 00:17:22 for Simulation 2 (HBOC only), and 00:14:24 for Simulation 3 (standard care). Scene interval did not differ between the groups (p = 0.27). There were also no significant differences in error rates (p = 0.28) or cognitive load (p = 0.67) between the simulation groups. There was no correlation between cognitive load and error rates (r = 0.15, p = 0.42). Competency was achieved in all the assessment criteria for all simulation groups.

CONCLUSION

In a simulated environment, eligibility screening, performance of trial-related procedures, and clinical management of patients with hemorrhagic shock can be completed competently by prehospital advanced life support clinicians without delaying transport or emergency care. Future prehospital clinical trials may use a similar approach to help ensure graded and cautious implementation of clinical trial procedures into prehospital emergency care systems.

Tri-modal Distribution of Trauma Deaths in a Resource-Limited Setting: Perception Versus Reality

BACKGROUND

Advances in trauma care in high-income countries have significantly reduced late deaths following trauma, challenging the classical trimodal pattern of trauma-associated mortality. While studies from low and middle-income countries have demonstrated that the trimodal pattern is still occurring in many regions, there is a lack of data from sub-Saharan Africa evaluating the temporal epidemiology of trauma deaths.

METHODS

We conducted a retrospective analysis of the trauma registry at Kamuzu Central Hospital in Lilongwe, Malawi, including all injured patients presenting to the emergency department (ED) from 2009 to 2021. Patients were compared based on timing of death relative to time of injury. We then used a modified Poisson regression model to identify adjusted predictors for early mortality compared to late mortality.

RESULTS

Crude mortality of patients presenting to the ED in the study period was 2.4% (n = 4,096/165,324). Most patients experienced a pre-hospital death (n = 2,330, 56.9%), followed by death in the ED (n = 619, 15.1%). Early death (pre-hospital or ED) was associated with transportation by police (RR1.52, 95% CI 1.38, 1.68) or private vehicle (RR1.20, 95% CI 1.07, 1.31), vehicle-related trauma (RR1.10, 95% CI 1.05, 1.14), and penetrating injury (RR1.11, 95% CI 1.04, 1.19). Ambulance transportation was associated with a 40% decrease in the risk of early death.

CONCLUSIONS

At a busy tertiary trauma center in Malawi, most trauma-associated deaths occur within 48 h of injury, with most in the pre-hospital setting. To improve clinical outcomes for trauma patients in this environment, substantial investment in pre-hospital care is required through first-responder training and EMS infrastructure.

Patterns and Predictors of Timely Presentation and Outcomes of Polytrauma Patients Referred to the Emergency Department of a Tertiary Hospital in Tanzania

Background

Polytrauma patients require special facilities to care for their injuries. In HICs, these patients are rapidly transferred from the scene or the first-health facility directly to a trauma center. However, in many LMICs, prehospital systems do not exist and there are long delays between arrivals at the first-health facility and the trauma center. We aimed to quantify the delay and determine the predictors of mortality among polytrauma patients. Methodology. We consecutively enrolled adult polytrauma patients (≥18 years) with ISS >15 referred to the Emergency Medicine Department of Muhimbili National Hospital, a major trauma center in Tanzania between August 2019 and January 2020. Based on a pilot study, the arrival of >6 hours after injury was considered a delay. The outcome of interest was factors associated with delayed presentation and the association of timeliness with 7-day mortality.

Results

We enrolled 120 (4.5%) referred polytrauma adult patients. The median age was 30 years (IQR 25–39) and the ISS was 29 (IQR 24–34). The majority (85%) were males. While the median time from injury to first-health facility was 40 minutes (IQR 33–50), the median time from injury to arrival at EMD-MNH, was 377 minutes (IQR 314–469). Delayed presentation was noted in more than half (54.2%) of participants, with the odds of dying being 1.4 times higher in the delayed group (95% CI 0.3–5.6). Having a GCS <8 (AOR 16.3 (95% CI 3.1–86.3), hypoxia <92% (AOR 8.3 (95% CI 1.4–50.9), and hypotension <90 mmHg (R 7.3 (95% CI 1.6–33.6) were all independent predictors of mortality.

Conclusion

The majority of polytrauma patients arrive at the tertiary facilities delayed for more than 6 hours and a distance of more than 8 km between facilities is associated with delay. Hypotension, hypoxia, and GCS of less than 8 are independent predictors of poor outcome. In the interim, there is a need to expedite the transfer of polytrauma patients to trauma care capable centers.

Relationship Between Prehospital Time and 24-h Mortality in Road Traffic-Injured Patients in Laos

Background

Road traffic injury has long been regarded as a “time-dependent disease.” However, shortening the prehospital time might not improve the outcome in developing countries given the current quality of in-hospital care. We aimed to examine the relationship between the prehospital time and 24-h mortality among road traffic victims in Laos.

Methods

A prospective observational study was conducted using the trauma registry data on traffic-injured patients who were transported by ambulance to a trauma center in the capital city of Laos from May 2018 to April 2019. The analysis focused on patients with non-mild conditions, whose outcomes could be affected by the prehospital time. To examine the relationship between a prehospital time of <60 min and 24-h mortality, a generalized estimating equation model was used incorporating the inverse probability weights utilizing the propensity score for the prehospital time.

Results

Of 701 patients, 73% were men, 91% were riding 2- or 3-wheel motor vehicles during the crash, and 68% had a prehospital time of <60 min. A total of 35 patients died within 24 h after the crash. Compared with those who survived, individuals who died tended to have head and torso injuries. The proportions of 24-h mortality were 4.7% and 5.4% in patients whose prehospital time was <60 min and ≥60 min, respectively. No significant relationship was found between the prehospital time and 24-h mortality.

Conclusion

A shorter prehospital time was not associated with the 24-h survival among road traffic victims in Laos.

Supplementary Information

The online version contains supplementary material available at 10.1007/s00268-022-06445-9.

Comparison of trauma scores and total prehospital time in the prediction of clinical course in a plane crash: Does timing matter?

OBJECTIVE

To investigate how the total prehospital time (TPT), Abbreviated Injury Scale (AIS), Injury Severity Score (ISS), and Trauma Score-Injury Severity Score (TRISS) affect the outcome of plane crash victims from anatomical, physiological and psychological perspectives. The accuracy or strength of these scores and TPT in predicting hospitalization and surgery, sequelae development and psychiatric complications [permanent temporary disability (PoTDs)] and PTSD can allow medical professionals to direct and prioritize management efforts of the victims of mass casualties in general.

METHODS

The study was designed as a single-center retrospective study. By examining the records of victims of a plane crash transferred to the ED, AIS, ISS, TRISS and TPT were calculated on admission. The clinical severity of the patients was determined by a joint decision of five clinicians. The performances of the trauma scores on hospitalization, surgery, PTSD and PoTDs were compared. The study data were analyzed via the Mann-Whitney U test and descriptive statistical methods. Pearson's chi-square test was used for the comparison of qualitative data, and ROC analyses were employed to determine cutoff levels.

RESULTS

The AIS, ISS, and TRISS scores of the victims with an indication for hospitalization, calculated on admission to the ED, were significantly higher than those of the other victims (p = 0.001). In addition, TPT, AIS, ISS, and TRISS scores were significantly higher in hospitalized patients than in outpatients (p < 0.05). The cutoff levels for AIS and ISS were ≥ 1.50 and ≥ 4.50, respectively, while they were ≥ 123.5 min for TPT with regard to hospitalization decisions. The AIS, ISS, and TRISS scores calculated on admission for the patients who underwent surgery were significantly higher than those who did not (p = 0.001). Cutoff levels for AIS and ISS were ≥ 2.50 and ≥ 11.50, respectively, while they were ≥ 135.5 min for TPT with respect to the decision to operate on the victims.

CONCLUSIONS

It is expected that everyone who practices medicine be equipped to handle multiple casualties. As the number of people involved in mass casualties increases, diagnostic tools, workups such as laboratory and radiological studies, and prognostic markers such as trauma scores should be simpler and more user-friendly.

Association between traumatic brain injury (TBI) patterns and mortality: a retrospective case-control study

Background: Low and medium income countries (LMICs) such as Kenya experience nearly three times more cases of traumatic brain injury (TBI) compared to high income countries (HICs). This is primarily exacerbated by weak health systems especially at the pre-hospital care level. Generating local empirical evidence on TBI patterns and its influence on patient mortality outcomes is fundamental in informing the design of trauma-specific emergency medical service (EMS) interventions at the pre-hospital care level. This study determines the influence of TBI patterns and mortality. Methods: This was a case-control study with a sample of 316 TBI patients. Data was abstracted from medical records for the period of January 2017 to March 2019 in three tertiary trauma care facilities in Kenya. Logistic regression was used to assess influence of trauma patterns on TBI mortality, controlling for patient characteristics and other potential confounders. Results: The majority of patients were aged below 40 years (73%) and were male (85%). Road traffic injuries (RTIs) comprised 58% of all forms of trauma. Blunt trauma comprised 71% of the injuries. Trauma mechanism was the only trauma pattern significantly associated with TBI mortality. The risk of dying for patients sustaining RTIs was 2.83 times more likely compared to non-RTI patients [odds ratio (OR) 2.83, 95% confidence interval (CI) 1.62-4.93, p=0.001]. The type of transfer to hospital was also significantly associated with mortality outcome, with a public hospital having a two times higher risk of death compared to a private hospital [OR 2.18 95%CI 1.21-3.94, p<0.009]. Conclusion: Trauma mechanism (RTI vs non-RTI) and type of tertiary facility patients are transferred to (public vs private) are key factors influencing TBI mortality burden. Strengthening local EMS trauma response systems targeting RTIs augmented by adequately resourced and equipped public facilities to provide quality lifesaving interventions can reduce the burden of TBIs.

Association between traumatic brain injury (TBI) patterns and mortality: a retrospective case-control study

Background: Low and medium income countries (LMICs) such as Kenya experience nearly three times more cases of traumatic brain injury (TBI) compared to high income countries (HICs). This is primarily exacerbated by weak health systems especially at the pre-hospital care level. Generating local empirical evidence on TBI patterns and its influence on patient mortality outcomes is fundamental in informing the design of trauma-specific emergency medical service (EMS) interventions at the pre-hospital care level. This study determines the influence of TBI patterns and mortality. Methods: This was a case-control study with a sample of 316 TBI patients. Data was abstracted from medical records for the period of January 2017 to March 2019 in three tertiary trauma care facilities in Kenya. Logistic regression was used to assess influence of trauma patterns on TBI mortality, controlling for patient characteristics and other potential confounders. Results: The majority of patients were aged below 40 years (73%) and were male (85%). Road traffic injuries (RTIs) comprised 58% of all forms of trauma. Blunt trauma comprised 71% of the injuries. Trauma mechanism was the only trauma pattern significantly associated with TBI mortality. The risk of dying for patients sustaining RTIs was 2.83 times more likely compared to non-RTI patients [odds ratio (OR) 2.83, 95% confidence interval (CI) 1.62-4.93, p=0.001]. The type of transfer to hospital was also significantly associated with mortality outcome, with a public hospital having a two times higher risk of death compared to a private hospital [OR 2.18 95%CI 1.21-3.94, p<0.009]. Conclusion: Trauma mechanism (RTI vs non-RTI) and type of tertiary facility patients are transferred to (public vs private) are key factors influencing TBI mortality burden. Strengthening local EMS trauma response systems targeting RTIs augmented by adequately resourced and equipped public facilities to provide quality lifesaving interventions can reduce the burden of TBIs.

Trauma patients at the Helderberg District Hospital emergency centre, South Africa: A descriptive study

INTRODUCTION

Trauma is a substantial component of South Africa's burden of disease. District hospitals provide primary trauma care for a large proportion of this trauma burden, although most studies are in specialised or tertiary settings. The aim was to evaluate the profile of physical trauma patients attending the emergency centre at Helderberg District Hospital, Cape Town.

METHODS

An observational descriptive study was conducted between 1 January and 30 April 2019. Patients with trauma were identified from a register and systematically sampled to achieve a sample size of 377. Retrospective data from medical records was collected and analysed in the Statistical Package for Social Sciences.

RESULTS

Of the 14,873 patients attending the emergency centre 24.6% were trauma related and 381 folders were analysed. Of these patients 30.4% were female and 69.6% male with an average age of 27.8 years. Over 60% of patients used an ambulance to get to the hospital. Sundays were the busiest days with 23.9% of all cases. Intentional trauma accounted for 45.4% of cases and accidental injuries 49.1%. The commonest mechanisms were sharp injuries (27.6%), falls (22.0%) and blunt trauma (19.4%). Intentional trauma made up more than half of all trauma in males, was more prevalent than accidental trauma between 20 and 60 years and resulted in a higher proportion of admissions.

CONCLUSION

There were high levels of intentional trauma, especially involving young males over the weekend, mostly with sharp objects. This trauma burden resulted in high numbers of admissions and transfer to tertiary hospitals. Family physicians and other generalists need to be well trained in trauma resuscitation and stabilisation. District hospital need to be appropriately equipped and supplied to manage trauma. Further research is needed to identify underlying modifiable factors that can be addressed through community-orientated interventions.

Epidemiology of prehospital trauma deaths in Malawi: A retrospective cohort study

Introduction

Trauma is among the leading causes of death and disability in both adults and children worldwide. In Malawi, trauma patients are commonly brought in dead (BID). We aimed to describe the prevalence, sociodemographic, and injury-related characteristics of patients BID to Kamuzu Central Hospital (KCH), a referral hospital in Lilongwe, Malawi.

Methods

We retrospectively reviewed records of all patients BID in the trauma surveillance registry at KCH from February 2008 to September 2019. We excluded patients BID that did not present to the emergency centre, and were instead taken to the mortuary directly. We used descriptive statistics to evaluate the epidemiology of patients BID.

Results

We reviewed 106,198 trauma records and 1889 (1.8%) were BID patients. Most patients BID were male, in both adult (n = 1337/1528, 88.4%) and children (n = 231/360, 64.9%) cohorts. The mean age was 34.7 (SD 11.9) years in adults and 7.8 (SD 5.4) years in children. Among the adult BID patients, 33.2% were unemployed, 25.6% were construction workers, and 10.1% were small business owners or managers. The common injury mechanisms in adults were road traffic-related injuries (RTIs) (47.1%) and assaults (23.6%). In children, injuries resulted from RTIs (39.7%), with 74.4% of those were pedestrians hit by cars, drowning (22.9%), and burns (12.4%). In both groups, most injuries occurred on roads (60.2%) or at home (22.1%). Reported alcohol use at the time of trauma was present in 6.3%. The police (57.9%) and privately-owned vehicles (26.6%) transported most BID patients to KCH.

Conclusion

Efforts to reduce prehospital trauma mortality must focus on improving prehospital care, including training the police and community in basic life support and improving resources towards prehospital trauma care. Further efforts to reduce prehospital mortality must aim to decrease injuries on the roads and at home.

Do EMS times associate with injury severity?

In this study, emergency medical services times, along with other crash-related explanatory variables, have been used to investigate influential factors on injury severity. To overcome the complexity of emergency medical services times impact on crash outcome, the interaction effects of EMS times and injury location on the body were also investigated in a separate model. This study utilized the linked data of police-reported crash data and emergency medical services runs, including 2192 crash injuries that transferred to hospital. A random-effects ordered probit approach was implemented to identify effective factors on crash injury severity. Three models of (1) crash-related variables, (2) crash-related and emergency medical services times and (3) crash-related, emergency medical services times and interaction effects of EMS times and injury location on the body were developed. Although the outcome could not find the impact of faster emergency medical services times on injury severity in the second model, in the third model, faster response time and slower on-scene time were associated with decreasing the severity of entire-body injuries. We discuss why this may be the case.

The burden of HIV and tuberculosis on the resuscitation area of an urban district-level hospital in Cape Town

INTRODUCTION

Many patients present to emergency centres with HIV and tuberculosis related emergencies. Little is known about the influence of HIV and tuberculosis on the resuscitation areas of district-level hospitals. The primary objective was to determine the burden of non-trauma patients with HIV and/or tuberculosis presenting to the resuscitation area of Khayelitsha Hospital, Cape Town.

METHODS

A retrospective analysis was performed on a prospectively collected observational database. A randomly selected 12-week sample of data from the resuscitation area was used. Trauma and paediatric (<13 years) cases were excluded. Patient demographics, HIV and tuberculosis status, disease category, investigations and procedures undertaken, disposition and in-hospital mortality were assessed. HIV and tuberculosis status were determined by laboratory confirmation or from clinical records. Descriptive statistics are presented and comparisons were done using the χ2-test or independent t-test.

RESULTS

A total of 370 patients were included. HIV prevalence was 38.4% (n = 142; unknown n = 78, 21.1%), tuberculosis prevalence 13.5% (n = 50; unknown n = 233, 63%), and HIV/tuberculosis co-infection 10.8% (n = 40). HIV and tuberculosis were more likely in younger patients (both p < 0.01) and more females were HIV-positive (p < 0.01). Patients with tuberculosis spend 93 min longer in the resuscitation area than those without (p = 0.02). The acuity of patients did not differ by HIV or tuberculosis status.Infectious-related diseases and diseases of the digestive system occurred significantly more in the HIV-positive group, and endocrine-related diseases and diseases of the nervous system in HIV-negative patients.HIV-positive patients received more abdominal ultrasound examinations (p < 0.01), blood cultures (p < 0.01) and intravenous antibiotics (p < 0.01). In-hospital mortality was 17% and was not influenced by HIV status (p = 0.36) or tuberculosis status (p = 0.29).

CONCLUSION

This study highlights the burden of HIV and tuberculosis on the resuscitation area of a district level hospital. Neither HIV nor tuberculosis status were associated with in-hospital mortality.

A scoping review of worldwide studies evaluating the effects of prehospital time on trauma outcomes

BACKGROUND

Annually, over 1 billion people sustain traumatic injuries, resulting in over 900,000 deaths in Africa and 6 million deaths globally. Timely response, intervention, and transportation in the prehospital setting reduce morbidity and mortality of trauma victims. Our objective was to describe the existing literature evaluating trauma morbidity and mortality outcomes as a function of prehospital care time to identify gaps in literature and inform future investigation.

MAIN BODY

We performed a scoping review of published literature in MEDLINE. Results were limited to English language publications from 2009 to 2020. Included articles reported trauma outcomes and prehospital time. We excluded case reports, reviews, systematic reviews, meta-analyses, comments, editorials, letters, and conference proceedings. In total, 808 articles were identified for title and abstract review. Of those, 96 articles met all inclusion criteria and were fully reviewed. Higher quality studies used data derived from trauma registries. There was a paucity of literature from studies in low- and middle-income countries (LMIC), with only 3 (3%) of articles explicitly including African populations. Mortality was an outcome measure in 93% of articles, predominantly defined as "in-hospital mortality" as opposed to mortality within a specified time frame. Prehospital time was most commonly assessed as crude time from EMS dispatch to arrival at a tertiary trauma center. Few studies evaluated physiologic morbidity outcomes such as multi-organ failure.

CONCLUSION

The existing literature disproportionately represents high-income settings and most commonly assessed in-hospital mortality as a function of crude prehospital time. Future studies should focus on how specific prehospital intervals impact morbidity outcomes (e.g., organ failure) and mortality at earlier time points (e.g., 3 or 7 days) to better reflect the effect of early prehospital resuscitation and transport. Trauma registries may be a tool to facilitate such research and may promote higher quality investigations in Africa and LMICs.

The burden of trauma in Tanzania: Analysis of prospective trauma registry data at regional hospitals in Tanzania

BACKGROUND

Trauma contributes significantly to the burden of disease and mortality in sub-Saharan Africa (SSA). Like most of SSA, Tanzania lacks prospective trauma registries (TRs), resulting in poor and inconsistent availability of injury data. A model TR was implemented at five representative regional hospitals in Tanzania; the TR incorporates the variables recommended by the World Health Organisation (WHO) Data Set for Injury. This study characterises the burden of trauma seen at five regional hospital Emergency Units (EUs) in Tanzania using data from this new TR.

METHODS

This prospective descriptive study used TR data from EUs of five regional Hospitals in Tanzania between February 2019 to September 2019. Descriptive statistics were calculated for mechanism of injury, injury severity, disposition and mortality. Injury severity scores were calculated. We determined relative risk for mortality by injury type.

RESULTS

Over a seven-month period, 6,302 (9.6%) patients presented to these EUs with trauma-related complaints. They had a median age of 27 (IQR: 19-37) years and 71.3% were male. Most patients (76.6%) were self-referred and presented to EU on motorized (two or three-wheeler) vehicle (55.9%). Road traffic accidents (RTAs) 3786 (60.3%) were the most common mechanism of injury. Most patients (63.3%) presented with injuries to the upper and lower extremities, while few (2.0%) had injuries to the chest. The overall mean Injury Severity Score (ISS) was 9 (Interquartile Range (IQR): 4-13], and varied by hospital. Total 24-hour mortality was 3.3% and 126 (2.1%) patients died while receiving care at the EU. Among those who died, 156 (81.7%) had an intracranial injury; relative risk of death was [13.3 (CI_95%: 9.3 -19.1), p<0.0001] for intracranial injuries compared to other injury patterns.

CONCLUSIONS

TR from these five Tanzanian regional hospitals has provided an opportunity to more accurately describe the country's burden of injury. Having sufficient data for ISS and other key trauma variables allows us to compare the burden and outcomes of trauma in Tanzania with other countries, which will help to quantify an accurate burden of injury, inform quality improvement initiatives, and suggest where to focus preventative measures.

Police Transportation Following Vehicular Trauma and Risk of Mortality in a Resource-Limited Setting

BACKGROUND

In resource-limited settings, prehospital trauma care and transportation from the scene to a hospital is not well developed. Critically injured patients present to the hospital via privately owned vehicles (PV), public transportation, or the police. We aimed to determine the mortality following road traffic injury based on the mode of transportation to our trauma center.

METHODS

We performed a retrospective analysis of the Kamuzu Central Hospital (KCH) Trauma Registry from January 2011 to May 2018. Patients with road traffic injuries, presenting from the scene, were included. Those brought in dead or discharged from casualty were excluded. Bivariate analysis was performed over mortality. A Poisson multivariate regression determined the relative risk of mortality by prehospital transportation.

RESULTS

2853 patients were included; 7.8% (n = 223) died. Patients were transported by PV (n = 1963, 68.8%), minibus (n = 497, 17.4%), and police (268, 9.4%). No patients were transported by ambulance. Patients transported by police (1 h, IQR 0-2) and PV (1 h, IQR 0-2), arrived earlier than those transported by minibus (2 h, IQR 0-27), p < 0.001. There was no difference in injury severity between the transportation cohorts. Compared to PV, patients transported by police (RR 1.56, 95% CI 1.13-2.17, p = 0.008) have an increased risk of mortality after controlling for injury severity. There was no difference in mortality in patients presenting by minibus (RR 0.83, 95% CI 0.55-1.24, p = 0.4).

CONCLUSION

Patients transported to KCH via police have a higher risk of mortality than those transported via private vehicle after controlling for injury severity. Training police in basic life support may be an initial target of intervention in reducing trauma mortality. Overall, the creation of a functional prehospital ambulance system with a cadre of paramedics is necessary for both trauma and non-trauma patients alike. This can only be achieved by training all stakeholders, the police, public transport drivers, and the public at large.

The Impact of Prehospital Transport Mode on Mortality of Penetrating Trauma Patients

OBJECTIVE

The optimal mode of transport of trauma patients from the scene to the hospital remains unknown. We aimed to study the impact of different prehospital modes of transport of penetrating trauma patients on hospital mortality.

METHODS

Using the Trauma Quality Improvement Program 2010 to 2016 database, we identified all adults with a penetrating injury. Univariate then multivariable logistic regression analyses were performed to study the correlation between the mode of transport and in-hospital mortality, adjusting for several covariates.

RESULTS

A total of 92,427 subjects were included. The overall mean transport time for patients transported by a ground ambulance, helicopter, fixed wing ambulance, and police/private vehicle were 32.2, 61.2, 68.9, and 28.2 minutes, respectively. Multivariable analyses revealed that compared with ground ambulance, helicopter transport was associated with a 34% decrease in the odds of mortality (odds ratio = 0.66, P < .0001), whereas police transport and private vehicle transport were associated with a 52% decrease in the odds of mortality (odds ratio = 0.48, P < .0001).

CONCLUSION

Helicopter, police, and private vehicle transports are associated with a decreased odds of mortality compared with ground ambulance. Further research should examine the variation in levels of care within different modes of prehospital transport.

Health system factors associated with post-trauma mortality at the prehospital care level in Africa: a scoping review

BACKGROUND

Africa accounts forabout 90% of the global trauma burden. Mapping evidence on health systemfactors associated with post-trauma mortality is essential in definingpre-hospital care research priorities and mitigation of the burden. The studyaimed to map and synthesize existing evidence and research gaps on healthsystem factors associated with post-trauma mortality at the pre-hospital carelevel in Africa.

METHODS

A scoping review of published studies and grey literature was conducted. The search strategy utilized electronic databases comprising of Medline, Google Scholar, Pub-Med, Hinari and Cochrane Library. Screening and extraction of eligible studies was done independently and in duplicate.

RESULTS

A total of 782 study titles and or abstracts were screened. Of these, 32 underwent full text review. Out of the 32, 17 met the inclusion criteria for final review. The majority of studies were literature reviews (24%) and retrospective studies (23%). Retrospective and qualitative studies comprised 6% of the included studies, systematic reviews (6%), cross-sectional studies (17%), Delphi studies (6%), panel reviews (6%) and qualitative studies (12%), systematic reviews (6%), cross-sectional studies (17%), Delphi studies (6%), panel reviews (6%) and qualitative studies (12%). Reported post-trauma mortality ranged from 13% in Ghana to 40% in Nigeria. Reported preventable mortality is as high as 70% in South Africa, 60% in Ghana and 40% in Nigeria. Transport mode is the most studied health system factor (reported in 76% of the papers). Only two studies (12%) included access to pre-hospital care interventions aspects, nine studies (53%) included care providers aspects and three studies (18%) included aspects of referral pathways. The types of transport mode and referral pathway are the only factors significantly associated with post-trauma mortality, though the findings were mixed. None of the included studies reported significant associations between pre-hospital care interventions, care providers and post-trauma mortality.

DISCUSSION

Although research on health system factors and its influence on post-trauma mortality at the pre-hospital care level in Africa are limited, anecdotal evidence suggests that access to pre-hospital care interventions, the level of provider skills and referral pathways are important determinants of mortality outcomes. The strength of their influence will require well designed studies that could incorporate mixed method approaches. Moreover, similar reviews incorporating other LMICs are also warranted. Key Words: Health System Factors, Emergency Medical Services [EMS], Pre-hospital Care, Post-Trauma mortality, Africa.

Every minute counts: The impact of pre-hospital response time and scene time on mortality of penetrating trauma patients

BACKGROUND

Prompt surgical control of hemorrhage is crucial in penetrating trauma patients. We aimed to study the impact of prehospital response time (PreRespT) and scene time (SceneT) on hospital mortality.

METHODS

Using the Trauma Quality Improvement Program (TQIP) 2010-2016 database, we identified all adults with penetrating injury. We defined PreRespT as time from EMS dispatch to scene arrival, and SceneT as time spent on scene. Univariate then multivariable logistic regression analyses were performed to study the independent correlation between PreRespT and SceneT on hospital mortality, adjusting for several covariates.

RESULTS

Out of a total of 1,403,470 patients, 43,467 patients were included. Multivariable analyses suggested that: 1) every minute increase in PreRespT independently correlates with a 2% increase in mortality (OR 1.02, p < 0.0001), and 2) every minute increase in SceneT independently correlates with a 1% increase in mortality (OR 1.01, p = 0.001).

CONCLUSION

In the penetrating injury trauma patient, PreRespT and SceneT independently correlate with hospital mortality. This data suggests that a faster PreRespT and a "scoop and run" strategy may be more beneficial in this population.