Ambulance use is not associated with patient acuity after road traffic collisions: a cross-sectional study from Addis Ababa, Ethiopia

Prehospital Emergency Care in Low- and Middle-Income Countries: A Systematic Review

BACKGROUND

An under-developed and fragmented prehospital Emergency Medical Services (EMS) system is a major obstacle to the timely care of emergency patients. Insufficient emphasis on prehospital emergency systems in low- and middle-income countries (LMICs) currently causes a substantial number of avoidable deaths from time-sensitive illnesses, highlighting a critical need for improved prehospital emergency care systems. Therefore, this systematic review aimed to assess the prehospital emergency care services across LMICs.

METHODS

This systematic review used four electronic databases, namely: PubMed/MEDLINE, CINAHL, EMBASE, and SCOPUS, to search for published reports on prehospital emergency medical care in LMICs. Only peer-reviewed studies published in English language from January 1, 2010 through November 1, 2022 were included in the review. The Newcastle-Ottawa Scale (NOS) and Critical Appraisal Skills Programme (CASP) checklist were used to assess the methodological quality of the included studies. Further, the protocol of this systematic review has been registered on the International Prospective Register of Systematic Reviews (PROSPERO) database (Ref: CRD42022371936) and has been conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.

RESULTS

Of the 4,909 identified studies, a total of 87 studies met the inclusion criteria and were therefore included in the review. Prehospital emergency care structure, transport care, prehospital times, health outcomes, quality of information exchange, and patient satisfaction were the most reported outcomes in the considered studies.

CONCLUSIONS

The prehospital care system in LMICs is fragmented and uncoordinated, lacking trained medical personnel and first responders, inadequate basic materials, and substandard infrastructure.

Addressing discrepancies in estimates of road traffic deaths and injuries in Ethiopia

BACKGROUND

There are large discrepancies between official statistics of traffic injuries in African countries and estimates from the Global Burden of Disease (GBD) study and WHO's Global Status Reports on Road Safety (GSRRS). We sought to assess the magnitude of the discrepancy in Ethiopia, its implications and how it can be addressed.

METHODS

We systematically searched for nationally representative epidemiological data sources for road traffic injuries and vehicle ownership in Ethiopia and compared estimates with those from GBD and GSRRS.

FINDINGS

GBD and GSRRS estimates vary substantially across revisions and across projects. GSRRS-2018 estimates of deaths (27 326 in 2016) are more than three times GBD-2019 estimates (8718), and these estimates have non-overlapping uncertainty ranges. GSRRS estimates align well with the 2016 Demographic and Health Survey (DHS-2016; 27 838 deaths, 95th CI: 15 938 to 39 738). Official statistics are much lower (5118 deaths in 2018) than all estimates. GBD-2019 estimates of serious non-fatal injuries are consistent with DHS-2016 estimates (106 050 injuries, 95th CI: 81 728 to 130 372) and older estimates from the 2003 World Health Survey. Data from five surveys confirm that vehicle ownership levels in Ethiopia are much lower than in other countries in the region.

INTERPRETATION

Inclusion of data from national health surveys in GBD and GSRRS can help reduce discrepancies in estimates of deaths and support their use in highlighting under-reporting in official statistics and advocating for better prioritisation of road safety in the national policy agenda. GBD methods for estimating serious non-fatal injuries should be strengthened to allow monitoring progress towards Sustainable Development Goal target 3.6.

Disparities in Access to Trauma Care in Sub-Saharan Africa: a Narrative Review

Purpose of Review

Sub-Saharan Africa is a diverse context with a large burden of injury and trauma-related deaths. Relative to high-income contexts, most of the region is less mature in prehospital and facility-based trauma care, education and training, and trauma care quality assurance. The 2030 Agenda for Sustainable Development recognizes rising inequalities, both within and between countries as a deterrent to growth and development. While disparities in access to trauma care between the region and HICs are more commonly described, internal disparities are equally concerning. We performed a narrative review of internal disparities in trauma care access using a previously described conceptual model.

Recent Findings

A broad PubMed and EMBASE search from 2010 to 2021 restricted to 48 sub-Saharan African countries was performed. Records focused on disparities in access to trauma care were identified and mapped to de Jager’s four component framework. Search findings, input from contextual experts, comparisons based on other related research, and disaggregation of data helped inform the narrative. Only 21 studies were identified by formal search, with most focused on urban versus rural disparities in geographical access to trauma care. An additional 6 records were identified through citation searches and experts. Disparity in access to trauma care providers, detection of indications for trauma surgery, progression to trauma surgery, and quality care provision were thematically analyzed. No specific data on disparities in access to injury care for all four domains was available for more than half of the countries. From available data, socioeconomic status, geographical location, insurance, gender, and age were recognized disparity domains. South Africa has the most mature trauma systems. Across the region, high quality trauma care access is skewed towards the urban, insured, higher socioeconomic class adult. District hospitals are more poorly equipped and manned, and dedicated trauma centers, blood banks, and intensive care facilities are largely located within cities and in southern Africa. The largest geographical gaps in trauma care are presumably in central Africa, francophone West Africa, and conflict regions of East Africa. Disparities in trauma training opportunities, public–private disparities in provider availability, injury care provider migration, and several other factors contribute to this inequity. National trauma registries will play a role in internal inequity monitoring, and deliberate development implementation of National Surgical, Obstetrics, and Anesthesia plans will help address disparities. Human, systemic, and historical factors supporting these disparities including implicit and explicit bias must be clearly identified and addressed. Systems approaches, strategic trauma policy frameworks, and global and regional coalitions, as modelled by the Global Alliance for Care of the Injured and the Bellagio group, are key. Inequity in access can be reduced by prehospital initiatives, as used in Ghana, and community-based insurance, as modelled by Rwanda.

Summary

Sub-Saharan African countries have underdeveloped trauma systems. Consistent in the narrative is the rural-urban disparity in trauma care access and the disadvantage of the poor. Further research is needed in view of data disparity. Recognition of these disparities should drive creative equitable solutions and focused interventions, partnerships, accompaniment, and action.

Supplementary Information

The online version contains supplementary material available at 10.1007/s40719-022-00229-1.

Studies of the effectiveness of transport sector interventions in low- and middle-income countries: An evidence and gap map

BACKGROUND

There are great disparities in the quantity and quality of infrastructure. European countries such as Denmark, Germany, Switzerland, and the UK have close to 200 km of road per 100 km², and the Netherlands over 300 km per 100 km². By contrast, Kenya and Indonesia have <30, Laos and Morocco <20, Tanzania and Bolivia <10, and Mauritania only 1 km per 100 km². As these figures show, there is a significant backlog of transport infrastructure investment in both rural and urban areas, especially in sub-Saharan Africa. This situation is often exacerbated by weak governance and an inadequate regulatory framework with poor enforcement which lead to high costs and defective construction.The wellbeing of many poor people is constrained by lack of transport, which is called "transport poverty". Lucas et al. suggest that up to 90% of the world's population are transport poor when defined as meeting at least one of the following criteria: (1) lack of available suitable transport, (2) lack of transport to necessary destinations, (3) cost of necessary transport puts household below the income poverty line, (4) excessive travel time, or (5) unsafe or unhealthy travel conditions.

OBJECTIVES

The aim of this evidence and gap map (EGM) is to identify, map, and describe existing evidence from studies reporting the quantitative effects of transport sector interventions related to all means of transport (roads, rail, trams and monorail, ports, shipping, and inland waterways, and air transport).

METHODS

The intervention framework of this EGM reframes Berg et al's three categories (infrastructure, prices, and regulations) broadly as infrastructure, incentives, and institutions as subcategories for each intervention category which are each mode of transport (road, rail trams and monorail, ports, shipping, and inlands waterways, and air transport). This EGM identifies the area where intervention studies have been conducted as well as the current gaps in the evidence base.This EGM includes ongoing and completed impact evaluations and systematic reviews (SRs) of the effectiveness of transport sector interventions. This is a map of effectiveness studies (impact evaluations). The impact evaluations include experimental designs, nonexperimental designs, and regression designs. We have not included the before versus after studies and qualitative studies in this map. The search strategies included both academic and grey literature search on organisational websites, bibliographic searches and hand search of journals.An EGM is a table or matrix which provides a visual presentation of the evidence in a particular sector or a subsector. The map is presented as a matrix in which rows are intervention categories (e.g., roads) and subcategories (e.g., infrastructure) and the column outcome domains (e.g., environment) and subcategories as (e.g., air quality). Each cell contains studies of the corresponding intervention for the relevant outcome, with links to the available studies. Included studies were coded according to the intervention and outcomes assessed and additional filters as region, population, and study design. Critical appraisal of included SR was done using A Measurement Tool to Assess Systematic Reviews (AMSTAR -2) rating scale.

SELECTION CRITERIA

The search included both academic and grey literature available online. We included impact evaluations and SRs that assessed the effectiveness of transport sector interventions in low- and middle-income countries.

RESULTS

This EGM on the transport sector includes 466 studies from low- and middle-income countries, of which 34 are SRs and 432 impact evaluations. There are many studies of the effects of roads intervention in all three subcategories-infrastructure, incentives, and institutions, with the most studies in the infrastructure subcategories. There are no or fewer studies on the interventions category ports, shipping, and waterways and for civil aviation (Air Transport).In the outcomes, the evidence is most concentrated on transport infrastructure, services, and use, with the greatest concentration of evidence on transport time and cost (193 studies) and transport modality (160 studies). There is also a concentration of evidence on economic development and health and education outcomes. There are 139 studies on economic development, 90 studies on household income and poverty, and 101 studies on health outcomes.The major gaps in evidence are from all sectors except roads in the intervention. And there is a lack of evidence on outcome categories such as cultural heritage and cultural diversity and very little evidence on displacement (three studies), noise pollution (four studies), and transport equity (2). There is a moderate amount of evidence on infrastructure quantity (32 studies), location, land use and prices (49 studies), market access (29 studies), access to education facilities (23 studies), air quality (50 studies), and cost analysis including ex post CBA (21 studies).The evidence is mostly from East Asia and the Pacific Region (223 studies (40%), then the evidence is from the sub-Saharan Africa (108 studies), South Asia (96 studies), Latin America & Caribbean (79 studies). The least evidence is from Middle East & North Africa (30 studies) and Europe & Central Asia (20 studies). The most used study design is other regression design in all regions, with largest number from East Asia and Pacific (274). There is total 33 completed SRs identified and one ongoing, around 85% of the SR are rated low confidence, and 12% rated as medium confidence. Only one review was rated as high confidence. This EGM contains the available evidence in English.

CONCLUSION

This map shows the available evidence and gaps on the effectiveness of transport sector intervention in low- and middle-income countries. The evidence is highly concentrated on the outcome of transport infrastructure (especially roads), service, and use (351 studies). It is also concentrated in a specific region-East Asia and Pacific (223 studies)-and more urban populations (261 studies). Sectors with great development potential, such as waterways, are under-examined reflecting also under-investment.The available evidence can guide the policymakers, and government-related to transport sector intervention and its effects on many outcomes across sectors. There is a need to conduct experimental studies and quality SRs in this area. Environment, gender equity, culture, and education in low- and middle-income countries are under-researched areas in the transport sector.

Prevalence and risk factors for road traffic injuries and mortalities in Ethiopia: systematic review and meta-analysis

BACKGROUND

Road traffic injuries, which are responsible for premature deaths and functional losses, are the leading causes of unintentional injuries in Ethiopia. As most studies on road traffic injuries, so far, have been either local or regional, it is believed that combining the regional or local data to get nationally representative information could help programme implementers in setting priorities.

OBJECTIVE

The aim of this review was to estimate the proportion of road traffic injuries, mortality and risk factors for the problem among all age groups in Ethiopia.

DATA SOURCES

A systematic review of articles using MEDLINE/PubMed SCOPUS Web of Science and science direct was conducted. Additional studies were identified via manual search.

STUDY SELECTION

Only studies that reported road traffic injuries and/or mortalities for all age groups were included in this review.

DATA SYNTHESIS

All pooled analyses were based on random-effect models. Twenty-six studies for the prevalence of RTIs (n=37 424), 24 studies for road traffic injuries (RTI) mortality, (n=38 888), 9 studies for prevalence of fracture among RTIs (n=2817) and 5 studies for the prevalence of post-traumatic stress disorder (n=1733) met our inclusion criteria. Driving in the dark increased severity of injury by 1.77, 95% CI 1.60 to 1.95). The certainty of the evidence was assessed using GRADEpro Guideline Development Tool.

CONCLUSION

In this review, the burden of road traffic injuries and mortalities remains high in Ethiopia. Human factors are the most common causes of the problem in Ethiopia. The existing safety regulations should be re-evaluated and supported by continuous behavioural interventions.

PROSPERO REGISTRATION NUMBER

CRD42019124406.

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.

Patterns of injury at an Ethiopian referral hospital: Using an institutional trauma registry to inform injury prevention and systems strengthening

Background

Data about injury patterns and clinical outcomes are essential to address the burden of injury in low- and middle-income countries. Institutional trauma registries (ITRs) are a key tool for collecting epidemiologic data about injury. This study uses ITR data to describe the demographics and patterns of injury of trauma patients in Addis Ababa, Ethiopia in order to identify opportunities for injury prevention, systems strengthening and further research.

Methods

This is an analysis of prospectively collected data from a sustainable ITR at Menelik II Specialized Hospital, a public teaching hospital with trauma expertise. All patients presenting to the hospital with serious injuries requiring intervention or admission over a 13 month period were included. Univariable and bivariable analyses were performed for patient demographics and injury characteristics.

Results

A total of 854 patients with serious injuries were treated during the study period. Median age was 33 years and 74% were male. The most common mechanisms of injury were road traffic injuries (RTI) (37%), falls (30%) and blunt assault (17%). Over half of RTI victims were pedestrians. Median delay in presentation was 2 h; 17% of patients presented over 6 h after injury. 58% of patients were referred from another hospital or a clinic, and referrals accounted for 84% of patients arriving by ambulance. Median emergency center length of stay was 2 h and 62% of patients were discharged from the emergency center.

Conclusion

This study highlights the utility of institutional trauma registries in collecting crucial injury surveillance data. In Addis Ababa, road safety is an important target for injury prevention. Our findings suggest that the most severely injured patients may not be making it to the referral centers with the capacity to treat their injuries, thus efforts to improve prehospital care and triage are needed.

African relevance

Injury is a public health priority in Africa. Institutional trauma registries play a crucial role in efforts to improve trauma care by describing injury epidemiology to identify targets for injury prevention and systems strengthening efforts. In our context, pedestrian safety is a key target for injury prevention. Improving prehospital care and developing referral networks are goals for systems strengthening.

Secondary Overtriage of Trauma Patients to a Central Hospital in Malawi

INTRODUCTION

Secondary overtriage (OT) is the unnecessary transfer of injured patients between facilities. In low- and middle-income countries (LMICs), which shoulder the greatest burden of trauma globally, the impact of wasted resources on an overburdened system is high. This study determined the rate and associated characteristics of OT at a Malawian central hospital.

METHODS

A retrospective analysis of prospectively collected data from January 2012 through July 2017 was performed at Kamuzu Central Hospital (KCH) in Lilongwe, Malawi. Patients were considered OT if they were discharged alive within 48 h without undergoing a procedure, and were not severely injured or in shock on arrival. Factors evaluated for association with OT included patient demographics, injury characteristics, and transferring facility information.

RESULTS

Of 80,915 KCH trauma patients, 15,422 (19.1%) transferred from another facility. Of these, 8703 (56.2%) were OT. OT patients were younger (median 15, IQR: 6-31 versus median 26, IQR: 11-38, p < 0.001). Patients with primary extremity injury (5308, 59.9%) were overtriaged more than those with head injury (1991, 51.8%) or torso trauma (1349, 50.8%), p < 0.001. The OT rate was lower at night (18.9% v 28.7%, p < 0.001) and similar on weekends (20.4% v 21.8%, p = 0.03). OT was highest for penetrating wounds, bites, and falls; burns were the lowest. In multivariable modeling, risk of OT was greatest for burns and soft tissue injuries.

CONCLUSIONS

The majority of trauma patients who transfer to KCH are overtriaged. Implementation of transfer criteria, trauma protocols, and interhospital communication can mitigate the strain of OT in resource-limited settings.

A woman's worth: an access framework for integrating emergency medicine with maternal health to reduce the burden of maternal mortality in sub-Saharan Africa

Background

Within each of the Sustainable Development Goals (SDGs), the World Health Organization (WHO) has identified key emergency care (EC) interventions that, if implemented effectively, could ensure that the SDG targets are met. The proposed EC intervention for reaching the maternal mortality benchmark calls for “timely access to emergency obstetric care.” This intervention, the WHO estimates, can avert up to 98% of maternal deaths across the African region.

Access, however, is a complicated notion and is part of a larger framework of care delivery that constitutes the approachability of the proposed service, its acceptability by the target user, the perceived availability and accommodating nature of the service, its affordability, and its overall appropriateness.

Without contextualizing each of these aspects of access to healthcare services within communities, utilization and sustainability of any EC intervention-be it ambulances or simple toll-free numbers to dial and activate EMS-will be futile.

Main text

In this article, we propose an access framework that integrates the Three Delays Model in maternal health, with emergency care interventions. Within each of the three critical time points, we provide reasons why intended interventions should be contextualized to the needs of the community. We also propose measurable benchmarks in each of the phases, to evaluate the successes and failures of the proposed EC interventions within the framework. At the center of the framework is the pregnant woman, whose life hangs in a delicate balance in the hands of personal and health system factors that may or may not be within her control.

Conclusions

The targeted SDGs for reducing maternal mortality in sub-Saharan Africa are unlikely to be met without a tailored integration of maternal health service delivery with emergency medicine. Our proposed framework integrates the fields of maternal health with emergency medicine by juxtaposing the three critical phases of emergency obstetric care with various aspects of healthcare access. The framework should be adopted in its entirety, with measureable benchmarks set to track the successes and failures of the various EC intervention programs being developed across the African continent.

Waveform capnography in a South African prehospital service: Knowledge assessment of paramedics

Background

Waveform capnography has proven to be of great value in the provision of safe patient care especially in the intubated patient. Although seldom available, or used in African contexts, capnography has become standard practice in well-resourced out-of-hospital services for confirmation of intubation, and optimization of resuscitation and ventilation. To date there has been little research into the knowledge of out-of-hospital staff, both local and internationally, utilising capnography. This study describes the knowledge of paramedics who use waveform capnography in the out-of-hospital environment.

Methods

A cohort of advanced life support qualified paramedics in a private ambulance service in South Africa undertook a web-based survey around their background, training and use of capnography. Participants’ knowledge was assessed by exploring their interpretation of waveform capnography and establishing attitudes pertaining to training and constraints of availability of capnography.

Results

Seventy eight paramedics responded, and most (91%) indicated they were likely to use capnography when the tool was available. The majority of training in capnography had been during their primary qualification (85%). Most participants indicated that they would like further training (91%). Use of capnography for confirmation of endotracheal tube placement and quality of compressions during cardiopulmonary resuscitation was well understood (correct in 94% and 84% respectively), while more complicated knowledge such as waveform changes during ventilation (66%) and the effect of hypovolaemia (48%) on capnography were lacking.

Conclusion

Paramedics report using waveform capnography extensively when it is available in the South African out-of-hospital environment. Although the knowledge around capnography and its usage was found to be good in most areas, more complicated scenarios exposed flaws in the knowledge of many paramedics and suggest the need for improved and ongoing training, as well as incorporation into curricula as the field develops across the continent.