Healthcare professional views about a prehospital redirection pathway for stroke thrombectomy: a multiphase deductive qualitative study

BACKGROUND

Mechanical thrombectomy for stroke is highly effective but time-critical. Delays are common because many patients require transfer between local hospitals and regional centres. A two-stage prehospital redirection pathway consisting of a simple ambulance screen followed by regional centre assessment to select patients for direct admission could optimise access. However, implementation might be challenged by the limited number of thrombectomy providers, a lack of prehospital diagnostic tests for selecting patients and whether finite resources can accommodate longer ambulance journeys plus greater central admissions. We undertook a three-phase, multiregional, qualitative study to obtain health professional views on the acceptability and feasibility of a new pathway.

METHODS

Online focus groups/semistructured interviews were undertaken designed to capture important contextual influences. We purposively sampled NHS staff in four regions of England. Anonymised interview transcripts underwent deductive thematic analysis guided by the NASSS (Non-adoption, Abandonment and Challenges to Scale-up, Spread and Sustainability, Implementation) Implementation Science framework.

RESULTS

Twenty-eight staff participated in 4 focus groups, 2 group interviews and 18 individual interviews across 4 Ambulance Trusts, 5 Hospital Trusts and 3 Integrated Stroke Delivery Networks (ISDNs). Five deductive themes were identified: (1) (suspected) stroke as a condition, (2) the pathway change, (3) the value participants placed on the proposed pathway, (4) the possible impact on NHS organisations/adopter systems and (5) the wider healthcare context. Participants perceived suspected stroke as a complex scenario. Most viewed the proposed new thrombectomy pathway as beneficial but potentially challenging to implement. Organisational concerns included staff shortages, increased workflow and bed capacity. Participants also reported wider socioeconomic issues impacting on their services contributing to concerns around the future implementation.

CONCLUSIONS

Positive views from health professionals were expressed about the concept of a proposed pathway while raising key content and implementation challenges and useful 'real-world' issues for consideration.

The value of pre-hospital trauma life support courses for medical personnel-a questionnaire study

Background

The aim of the study was to determine the impact that PHTLS® course participation had on self-confidence of emergency personnel, regarding the pre-hospital treatment of patients who had suffered severe trauma. Furthermore, the goal was to determine the impact of specific medical profession, work experience and prior course participation had on the benefits of PHTLS® training.

Methods

A structured questionnaire study was performed. Healthcare providers from local emergency services involved in pre-hospital care in the metropolitan area of Zurich (Switzerland, Europe) who completed a PHTLS® course were included. Altered self-confidence, communication, and routines in the treatment of severe trauma patients were examined. The impact of prior course participation, work experience and profession on course benefits were evaluated.

Results

The response rate was 76%. A total of 6 transport paramedics (TPs), 66 emergency paramedics (EPs) and 15 emergency doctors (EDs) were included. Emergency paramedics had significantly more work experience compared with EDs (respectively 7.1 ± 5.7 yrs. vs. 4.5 ± 2.1 yrs., p = 0.004). 86% of the participants reported increased self-confidence in the pre-hospital management of severe trauma upon PHTLS® training completion. Moreover, according to 84% of respondents, extramural treatment of trauma changed upon course completion. PHTLS® course participants had improved communication in 93% of cases. This was significantly more frequent in EPs than TPs (p = 0.03). Multivariable analysis revealed emergency paramedics benefit the most from PHTLS® course participation.

Conclusion

The current study shows that PHTLS® training is associated with improved self-confidence and enhanced communication, with regards to treatment of severe trauma patients in a pre-hospital setting, among medical emergency personnel. Additionally, emergency paramedics who took the PHTLS® course improved in overall self-confidence. These findings imply that all medical personal involved in the pre-hospital care of trauma patients, in a metropolitan area in Europe, do benefit from PHTLS® training. This was independent of the profession, previous working experience or prior alternative course participation.

Prehospital identification of acute ischaemic stroke with large vessel occlusion: a retrospective study from western Norway

BACKGROUND

In 2019, the emergency medical services (EMS) covering the western Norway Regional Health Authority area implemented its version of the prehospital clinical criteria G-FAST (Gaze deviation, Facial palsy, Arm weakness, Visual loss, Speech disturbance) to detect acute ischaemic stroke (AIS) with large vessel occlusion (LVO). For patients with gaze deviation and at least one other G-FAST symptom, a primary stroke centre (PSC) may be bypassed and the patient taken directly to a comprehensive stroke centre (CSC) for rapid endovascular treatment (EVT) evaluation. The study aim was to investigate the efficacy of the G-FAST criteria for LVO patient selection and direct transfer to a CSC.

METHODS

This retrospective study included patients with code-red emergency medical communication centre (EMCC) stroke suspicion ambulance dispatch between August to December 2020. Stroke suspicion was defined as having at least one G-FAST symptom at EMS arrival. We obtained patient data from dispatches from EMCCs, EMS records and local EVT registries. Clinical features, CT images, and reperfusion treatment were recorded. The test characteristics for gaze deviation plus one other G-FAST symptom in detecting LVO were determined.

RESULTS

Among 643 patients, 59 were diagnosed with LVO at hospital arrival. In this group, seven fulfilled the G-FAST criteria for direct transport to a CSC at EMS arrival on scene, resulting in a sensitivity of 12% (95% CI 5% to 23%). The specificity was 99.66% (95% CI 98.77% to 99.96%), the positive predictive value 78%, and the negative predictive value 92%. EVT was performed in 64% (38/59) of LVO cases. Median time from PSC arrival to start of EVT at a CSC was 163 min.

CONCLUSION

The use of local G-FAST prehospital criteria by EMS personnel to identify patients with AIS with LVO is not suitable for selection of patients with LVO for direct transfer to a CSC.

Managing a Mega Mass Casualty Event by a Civilian Emergency Medical Services Agency: Lessons From the First Day of the 2023 Hamas-Israel War

On 7 October 2023, Israel faced an unexpected attack by Hamas, causing over 1,200 deaths and injuring more than 9,000 individuals. This report delves into the rapid medical response spearheaded by Israel's civilian Emergency Medical Service, Magen David Adom (MDA), during this crisis. Utilizing data from MDA's electronic database, 4,097 dispatch records from the day were analyzed. Of these, 39.3% were directly related to the attack. EMS teams faced multiple challenges, including handling an overwhelming number of casualties and navigating active combat zones, which impeded safe access to victims, posed significant risks to teams' safety, and constrained patient evacuation strategies. This incident underscores the importance of reinforcing healthcare resilience, particularly emphasizing the need for centralizing various aspects of response efforts. These include streamlined communication, national coordination of pre-hospital resources, and systemic management of patient evacuations. Moreover, providing substantial support for EMS personnel, who operated in highly challenging conditions, is imperative.

Consensus statement on the interhospital transfer of patients with acute aortic syndrome: TRAVERSING Delphi study

BACKGROUND

Standardisation of referral pathways and the transfer of patients with acute aortic syndromes (AAS) to regional centres are recommended by NHS England in the Acute Aortic Dissection Toolkit. The aim of the Transfer of Thoracic Aortic Vascular Emergencies to Regional Specialist INstitutes Group study was to establish an interdisciplinary consensus on the interhospital transfer of patients with AAS to specialist high-volume aortic centres.

METHODS

Consensus on the key aspects of interhospital transfer of patients with AAS was established using the Delphi method, in line with Conducting and Reporting of Delphi Studies guidelines. A national patient charity for aortic dissection was involved in the design of the Delphi study. Vascular and cardiothoracic surgeons, emergency physicians, interventional radiologists, cardiologists, intensivists and anaesthetists in the United Kingdom were invited to participate via their respective professional societies.

RESULTS

Three consecutive rounds of an electronic Delphi survey were completed by 212, 101 and 58 respondents, respectively. Using predefined consensus criteria, 60 out of 117 (51%) statements from the survey were included in the consensus statement. The study concluded that patients can be taken directly to a specialist aortic centre if they have typical symptoms of AAS on the background of known aortic disease or previous aortic intervention. Accepted patients should be transferred in a category 2 ambulance (response time <18 min), ideally accompanied by transfer-trained personnel or Adult Critical Care Transfer Services. A clear plan should be agreed in case of a cardiac arrest occurring during the transfer. Patients should reach the aortic centre within 4 hours of the initial referral from their local hospital.

CONCLUSIONS

This consensus statement is the first set of national interdisciplinary recommendations on the interhospital transfer of patients with AAS. Its implementation is likely to contribute to safer and more standardised emergency referral pathways to regional high-volume specialist aortic units.

Triage in major incidents: development and external validation of novel machine learning-derived primary and secondary triage tools

BACKGROUND

Major incidents (MIs) are an important cause of death and disability. Triage tools are crucial to identifying priority 1 (P1) patients-those needing time-critical, life-saving interventions. Existing expert opinion-derived tools have limited evidence supporting their use. This study employs machine learning (ML) to develop and validate models for novel primary and secondary triage tools.

METHODS

Adults (16+ years) from the UK Trauma Audit and Research Network (TARN) registry (January 2008-December 2017) served as surrogates for MI victims, with P1 patients identified using predefined criteria. The TARN database was split chronologically into model training and testing (70:30) datasets. Input variables included physiological parameters, age, mechanism and anatomical location of injury. Random forest, extreme gradient boosted tree, logistic regression and decision tree models were trained to predict P1 status, and compared with existing tools (Battlefield Casualty Drills (BCD) Triage Sieve, CareFlight, Modified Physiological Triage Tool, MPTT-24, MSTART, National Ambulance Resilience Unit Triage Sieve and RAMP). Primary and secondary candidate models were selected; the latter was externally validated on patients from the UK military's Joint Theatre Trauma Registry (JTTR).

RESULTS

Models were internally tested in 57 979 TARN patients. The best existing tool was the BCD Triage Sieve (sensitivity 68.2%, area under the receiver operating curve (AUC) 0.688). Inability to breathe spontaneously, presence of chest injury and mental status were most predictive of P1 status. A decision tree model including these three variables exhibited the best test characteristics (sensitivity 73.0%, AUC 0.782), forming the candidate primary tool. The proposed secondary tool (sensitivity 77.9%, AUC 0.817), applicable via a portable device, includes a fourth variable (injury mechanism). This performed favourably on external validation (sensitivity of 97.6%, AUC 0.778) in 5956 JTTR patients.

CONCLUSION

Novel triage tools developed using ML outperform existing tools in a nationally representative trauma population. The proposed primary tool requires external validation prior to consideration for practical use. The secondary tool demonstrates good external validity and may be used to support decision-making by healthcare workers responding to MIs.

Continuity and Change in Baseline Stroke Knowledge across the world: Second Wave of FAST Heroes campaign implementation

OBJECTIVES

In this work we present the results of the implementation of a globally representative educational school-based stroke awareness programme, FAST (Face, Arm, Speech, Time) Heroes during the second year of education (wave 2). We aimed to observe changes in baseline stroke knowledge between wave 1 and wave 2, distinguish the more fine-grained effect of the campaign on society, and evaluate changes before and after the implementation of wave 2.

MATERIALS AND METHODS

In wave 2, parents of school-aged children completed an online stroke preparedness questionnaire before (t1) and after (t2) programme implementation. Results between the time points were analyzed with descriptive statistics alongside changes in baseline knowledge between waves 1 and 2.

RESULTS

1,611 parents participated in wave 2. Parents increased their knowledge of three stroke symptoms from 69% to 87% (p<.001). Their knowledge of the designated emergency number rose from 75% (t1) to 88% (t2) (p<.001). A 17% increase in baseline knowledge occurred in stroke symptoms identified correctly between wave 1 (11 countries) and 2 (18 countries).

CONCLUSIONS

Results support the precision and usability of the data collection approach in measuring the change in stroke knowledge between implementation waves. The increased baseline knowledge concerning stroke symptoms in wave 2 needs further examination.

Detection of patients with COVID-19 by the emergency medical services in Lombardy through an operator-based interview and machine learning models

BACKGROUND

The regional emergency medical service (EMS) in Lombardy (Italy) developed clinical algorithms based on operator-based interviews to detect patients with COVID-19 and refer them to the most appropriate hospitals. Machine learning (ML)-based models using additional clinical and geospatial epidemiological data may improve the identification of infected patients and guide EMS in detecting COVID-19 cases before confirmation with SARS-CoV-2 reverse transcriptase PCR (rtPCR).

METHODS

This was an observational, retrospective cohort study using data from October 2020 to July 2021 (training set) and October 2021 to December 2021 (validation set) from patients who underwent a SARS-CoV-2 rtPCR test within 7 days of an EMS call. The performance of an operator-based interview using close contact history and signs/symptoms of COVID-19 was assessed in the training set for its ability to determine which patients had an rtPCR in the 7 days before or after the call. The interview accuracy was compared with four supervised ML models to predict positivity for SARS-CoV-2 within 7 days using readily available prehospital data retrieved from both training and validation sets.

RESULTS

The training set includes 264 976 patients, median age 74 (IQR 55-84). Test characteristics for the detection of COVID-19-positive patients of the operator-based interview were: sensitivity 85.5%, specificity 58.7%, positive predictive value (PPV) 37.5% and negative predictive value (NPV) 93.3%. Contact history, fever and cough showed the highest association with SARS-CoV-2 infection. In the validation set (103 336 patients, median age 73 (IQR 50-84)), the best-performing ML model had an AUC of 0.85 (95% CI 0.84 to 0.86), sensitivity 91.4% (95 CI% 0.91 to 0.92), specificity 44.2% (95% CI 0.44 to 0.45) and accuracy 85% (95% CI 0.84 to 0.85). PPV and NPV were 13.3% (95% CI 0.13 to 0.14) and 98.2% (95% CI 0.98 to 0.98), respectively. Contact history, fever, call geographical distribution and cough were the most important variables in determining the outcome.

CONCLUSION

ML-based models might help EMS identify patients with SARS-CoV-2 infection, and in guiding EMS allocation of hospital resources based on prespecified criteria.

Pain management in children with burns before admission to the ward: Analysis of selected parts of pre-hospital medical records

BACKGROUND

The extent of pre-hospital medical care (PHMC) given to burned patients affects both the patient's condition and the effectiveness of treatment.

OBJECTIVES

To improve the quality of PHMC of burns in children, based upon an analysis of the selected parts of pre-hospital medical records, with particular emphasis on analgesia.

MATERIAL AND METHODS

Medical records were used to analyze how PHMC was given to 117 burned children aged 0-18 years, treated at the Pediatric Surgery Ward between January 1, 2014 and December 31, 2017.

RESULTS

In 41/85 cases, PHMC was delivered by Emergency Medical Teams (EMTs), in 42 in Emergency/Admission Rooms (ARs) and in 2 by Primary Health Care (PHC). Monotherapy was predominant. Medical records from ARs included the following information: the administration of analgesics with the name in 95% (21) of the cases, the route of drug administration in 45% (10), insertion of intravenous access and dressing in 33% (14), and fluid transfusion in 43% (6) cases. The way in which the EMTs provided assistance was described in 34% (14/41) of medical records, the administration of analgesics in 86% (12) cases, cooling and dressing in 43% (6), and the establishment of intravenous access with fluid transfusion in 36% (5) cases.

CONCLUSION

In burned children, access to analgesic and combined pain therapy is still random, limited and deviates from current recommendations. Prior to the admission to the ward, pain relief with 1 agent administered rectally prevails. There is a need to standardize the procedures for pre-hospital medical assistance provided to burned children, including the method of pain management in line with the Polish recommendations. It is necessary to make the medical staff aware of the obligation to keep medical records in a reliable and legal manner.

Prehospital early warning scores for adults with suspected sepsis: retrospective diagnostic cohort study

BACKGROUND

Ambulance services need to identify and prioritise patients with sepsis for early hospital assessment. We aimed to determine the accuracy of early warning scores alongside paramedic diagnostic impression to identify sepsis that required urgent treatment.

METHODS

We undertook a retrospective diagnostic cohort study involving adult emergency medical cases transported to Sheffield Teaching Hospitals ED by Yorkshire Ambulance Service in 2019. We used routine ambulance service data to calculate 21 early warning scores and categorise paramedic diagnostic impressions as sepsis, infection, non-specific presentation or other presentation. We linked cases to hospital records and identified those meeting the sepsis-3 definition who received urgent hospital treatment for sepsis (reference standard). Analysis determined the accuracy of strategies that combined early warning scores at varying thresholds for positivity with paramedic diagnostic impression.

RESULTS

We linked 12 870/24 955 (51.6%) cases and identified 348/12 870 (2.7%) with a positive reference standard. None of the strategies provided sensitivity greater than 0.80 with positive predictive value greater than 0.15. The area under the receiver operating characteristic curve for the National Early Warning Score, version 2 (NEWS2) applied to patients with a diagnostic impression of sepsis or infection was 0.756 (95% CI 0.729, 0.783). No other early warning score provided clearly superior accuracy to NEWS2. Paramedic impression of sepsis or infection had sensitivity of 0.572 (0.519, 0.623) and positive predictive value of 0.156 (0.137, 0.176). NEWS2 thresholds of >4, >6 and >8 applied to patients with a diagnostic impression of sepsis or infection, respectively, provided sensitivities and positive predictive values of 0.522 (0.469, 0.574) and 0.216 (0.189, 0.245), 0.447 (0.395, 0.499) and 0.274 (0.239, 0.313), and 0.314 (0.268, 0.365) and 0.333 (0.284, 0.386).

CONCLUSION

No strategy is ideal but using NEWS2 alongside paramedic diagnostic impression of infection or sepsis could identify one-third to half of sepsis cases without prioritising unmanageable numbers. No other score provided clearly superior accuracy to NEWS2.

TRIAL REGISTRATION NUMBER

researchregistry5268, https://www.researchregistry.com/browse-the-registry%23home/registrationdetails/5de7bbd97ca5b50015041c33/.

Trends in survival from out-of-hospital cardiac arrest with a shockable rhythm and its association with bystander resuscitation: a retrospective study

OBJECTIVE

Over 300 000 cases of out-of-hospital cardiac arrests (OHCAs) occur each year in the USA and Europe. Despite decades of investment and research, survival remains disappointingly low. We report the trends in survival after a ventricular fibrillation/pulseless ventricular tachycardia OHCA, over a 13-year period, in a French urban region, and describe the simultaneous evolution of the rescue system.

METHODS

We investigated four 18-month periods between 2005 and 2018. The first period was considered baseline and included patients from the randomised controlled trial 'DEFI 2005'. The three following periods were based on the Paris Sudden Death Expertise Center Registry (France). Inclusion criteria were non-traumatic cardiac arrests treated with at least one external electric shock with an automated external defibrillator from the basic life support team and resuscitated by a physician-staffed ALS team. Primary outcome was survival at hospital discharge with a good neurological outcome.

RESULTS

Of 21 781 patients under consideration, 3476 (16%) met the inclusion criteria. Over all study periods, survival at hospital discharge increased from 12% in 2005 to 25% in 2018 (p<0.001), and return of spontaneous circulation at hospital admission increased from 43% to 58% (p=0.004).Lay-rescuer cardiopulmonary resuscitation (CPR) and telephone CPR (T-CPR) rates increased significantly, but public defibrillator use remained limited.

CONCLUSION

In a two-tiered rescue system, survival from OHCA at hospital discharge doubled over a 13-year study period. Concomitantly, the system implemented an OHCA patient registry and increased T-CPR frequency, despite a consistently low rate of public defibrillator use.

Analgesia and Sedation of Pediatric Patients with Major Trauma in Pre-Hospital and Emergency Department Settings-A Narrative Review

Children who sustain major injuries are at risk of receiving insufficient pain relief and sedation, which can have physical and psychological repercussions. Heightened emotional distress can increase the likelihood of developing symptoms of post-traumatic stress. Providing sufficient analgesia and sedation for children with major trauma presents specific challenges, given the potential for drug-related adverse events, particularly in non-intubated patients. The current literature suggests that a relatively low percentage of pediatric patients receive adequate analgesia in pre-hospital and emergency department settings following major trauma. There are only sparse data on the safety of the provision of analgesia and sedation in children with major trauma in the pre-hospital and ED settings. The few studies that examined sedation protocols in this context highlight the importance of physician training and competency in managing pediatric airways. There is a pressing need for prospective studies that focus upon pediatric major trauma in the pre-hospital and emergency department setting to evaluate the benefits and risks of administering analgesia and sedation to these patients. The aim of this narrative review was to offer an updated overview of analgesia and sedation management in children with major trauma in pre-hospital and ED settings.

Determining the top research priorities in UK prehospital critical care: a modified Delphi study

BACKGROUND

Prehospital critical care is a rapidly evolving field. There is a paucity of evidence relating to its practice, with limited progress in answering those research questions identified over a decade ago. It is vital that evidence gaps are identified and addressed. This study aimed to define the current research priorities in UK prehospital critical care.

METHODS

This modified national Delphi study was coordinated by the Pre-HOspital Trainee Operated research Network and conducted in four rounds between October 2021 and April 2022. Rounds 1 and 2 were conducted online with clinicians involved in prehospital critical care delivery and non-clinical prehospital researchers. Rounds 3 and 4 were completed online by a subject matter expert (SME) panel.

RESULTS

In round 1, 78 participants submitted 394 research questions relating to prehospital critical care delivery in the UK. These were refined and categorised into 192 questions, which were scored for importance in round 2. Fifty questions were discussed and scored by the SME panel in round 3. Round 4 created a ranked top 20 list. The top research priority was 'Which cardiac arrest patients should critical care teams be dispatched to; how do we identify these patients during the emergency call?'. Other priorities included dispatch optimisation, out-of-hospital medical cardiac arrest management, optimising resuscitation in haemorrhagic shock, improving traumatic brain injury outcomes and optimising management of traumatic cardiac arrest.

CONCLUSIONS

This modified Delphi study identified 20 research priorities where efforts should be concentrated to develop collaborative prehospital critical care research within the UK over the next 5 years.

Prevalence of secondary insults and outcomes of patients with traumatic brain injury intubated in the prehospital setting: a retrospective cohort study

BACKGROUND

Prehospital neuroprotective strategies aim to prevent secondary insults (SIs) in traumatic brain injury (TBI). This includes haemodynamic optimisation in addition to oxygenation and ventilation targets achieved through rapid sequence intubation (RSI).The primary aim was to report the incidence and prevalence of SIs (prolonged hypotension, prolonged hypoxia and hyperventilation) and outcomes of patients with TBI who were intubated in the prehospital setting.

METHODS

A retrospective cohort study of adult patients with TBI who underwent RSI by a metropolitan road-based service in South-East Queensland, Australia between 1 January 2017 and 31 December 2020. Patients were divided into two cohorts based on the presence or absence of any SI sustained. Prolonged SIs were defined as occurring for ≥5 min. The association between SIs and mortality was examined in multivariable logistic regression and reported with adjusted ORs (aORs) and 95% CIs.

RESULTS

277 patients were included for analysis. Median 'Head' Abbreviated Injury Scale and Injury Severity Score were 4 (IQR: 3-5) and 26 (IQR: 17-34), respectively. Most episodes of prolonged hypotension and prolonged hypoxia were detected with the first patient contact on scene. Overall, 28-day mortality was 26%. Patients who sustained any SI had a higher mortality than those sustaining no SI (34.9% vs 14.7%, p<0.001). Prolonged hypoxia was an independent predictor of mortality (aOR 4.86 (95% CI 1.65 to 15.61)) but not prolonged hypotension (aOR 1.45 (95% CI 0.5 to 4.25)) or an end-tidal carbon dioxide <30 mm Hg on hospital arrival (aOR 1.28 (95% CI 0.5 to 3.21)).

CONCLUSION

SIs were common in the early phase of prehospital care. The association of prolonged hypoxia and mortality in TBI is potentially more significant than previously recognised, and if corrected early, may improve outcomes. There may be a greater role for bystander intervention in prevention of early hypoxic insult in TBI.

The Epidemiology of Pre-Hospital EMS Treatment of Geriatric Patients in the City of Vienna-An Overview

Background: The city of Vienna, Austria, has a gradually aging population. Elderly people, over 65 years old and living at home or in nursing homes, frequently use Emergency Medical Services (EMS). However, there is no previous data comparing the EMS utilization of elderly- and non-elderly patients in Vienna. Methods: We retrospectively analyzed all EMS incidents in Vienna from 2012 to 2019. Transport- and emergency physician treatment rates, annual fluctuations, and the number of non-transports were compared between elderly (≥65 years) and non-elderly (18−64 years) patients. Results: Elderly people accounted for 42.6% of the total EMS responses in adult patients, representing an annual response rate of 223 per 1000 inhabitants ≥ 65 years. Compared to 76 per 1000 inhabitants in patients 18−64 years old, this results in an incidence rate ratio (IRR) of 2.93 [2.92−2.94]. Elderly people were more likely (OR 1.68 [1.65−1.70]) to need emergency physicians, compared to 18−64 year-olds. Nursing home residents were twice (OR 2.11 [2.06−2.17]) as likely to need emergency physicians than the rest of the study group. Non-transports were more likely to occur in patients over 65 years than in non-elderlies (14% vs. 12%, p < 0.001). Conclusions: The elderly population ≥ 65 years in Vienna shows higher EMS response rates than younger adults. They need emergency physicians more often, especially when residing in nursing homes. The economical and organizational strain this puts on the emergency response system should trigger further research and the development of solutions, such as specific response units dedicated to elderly people.

COVID-19 as a risk factor for long-term mortality in patients managed by the emergency medical system: A prospective, multicenter, ambulance-based cohort study

Introduction

COVID-19 has initially been studied in terms of an acute-phase disease, although recently more attention has been given to the long-term consequences. In this study, we examined COVID-19 as an independent risk factor for long-term mortality in patients with acute illness treated by EMS (emergency medical services) who have previously had the disease against those who have not had the disease.

Methods

A prospective, multicenter, ambulance-based, ongoing study was performed with adult patients with acute disease managed by EMS and transferred with high priority to the emergency department (ED) as study subjects. The study involved six advanced life support units, 38 basic life support units, and five emergency departments from Spain. Sociodemographic inputs, baseline vital signs, pre-hospital blood tests, and comorbidities, including COVID-19, were collected. The main outcome was long-term mortality, which was classified into 1-year all-cause mortality and 1-year in- and out-of-hospital mortality. To compare both the patients with COVID-19 vs. patients without COVID-19 and to compare survival vs non-survival, two main statistical analyses were performed, namely, a longitudinal analysis (Cox regression) and a logistic regression analysis.

Results

Between 12 March 2020 and 30 September 2021, a total of 3,107 patients were included in the study, with 2,594 patients without COVID-19 and 513 patients previously suffering from COVID-19. The mortality rate was higher in patients with COVID-19 than in patients without COVID-19 (31.8 vs. 17.9%). A logistic regression showed that patients previously diagnosed with COVID-19 presented higher rates of nursing home residency, a higher number of breaths per minute, and suffering from connective disease, dementia, and congestive heart failure. The longitudinal analysis showed that COVID-19 was a risk factor for mortality [hazard ratio 1.33 (1.10-1.61); p < 0.001].

Conclusion

The COVID-19 group presented an almost double mortality rate compared with the non-COVID-19 group. The final model adjusted for confusion factors suggested that COVID-19 was a risk factor for long-term mortality.

Outcomes of paediatric patients who are not transported to hospital by Emergency Medical Services: a data linkage study

BACKGROUND

Data on the safety of non-transport decisions for paediatric patients attended by Emergency Medical Services (EMS) are lacking. We describe the characteristics and outcomes of paediatric non-transported patients in Victoria, Australia.

METHODS

A retrospective data linkage study of consecutive paediatric (aged <18 years) non-transported patients between January 2015 and June 2019. Patients were linked to ED, hospital admission and death records. Multivariable logistic regression analyses were used to determine factors associated with EMS recontact, ED presentation, hospital admission and an adverse event (death/cardiac arrest, intensive care unit admission or highest ED triage category) within 48 hours of the initial emergency call.

RESULTS

In total, 62 975 non-transported patients were included. The mean age was 7.1 (SD 6.0) years and 48.9% were male. Overall, 2.2% recontacted the EMS within 48 hours, 13.7% self-presented to a public ED, 2.4% were admitted to hospital and 0.1% had an adverse event, including two deaths. Among patients with paramedic-initiated non-transport (excluding transport refusals and transport via other means), 5.6% presented to a public ED, 1.1% were admitted to hospital and 0.05% had an adverse event. In the overall population, an abnormal vital sign on initial assessment increased the odds of hospital admission and an adverse event. Among paramedic-initiated non-transports, cases occurring in the early hours of the morning (04:00-08:00 hours) were associated with increased odds of subsequent hospital admission, while the odds of ED presentation and hospital admission also increased with increasing prior exposure to non-transported cases.

CONCLUSION

Adverse events were rare among paramedic-initiated non-transport cases. Vital sign derangements and attendance by paramedics with higher prior exposure to non-transports were associated with poorer outcomes and may be used to improve safety.

Paediatric frequent use of emergency medical services: a systematic review

BACKGROUND

Frequent use of emergency medical services (EMS) is recognised to be a global phenomenon, although paediatric frequent use is poorly understood. This systematic review aimed to understand how paediatric frequent use of EMS is currently defined, identify factors associated with paediatric frequent use of EMS and determine effectiveness of interventions for paediatric patients who frequently use EMS.

METHODS

Four electronic databases (Medline, CINAHL, Web of Science and PsycINFO) were searched to September 2022 for primary, peer-reviewed research studies published in English from January 2000. Studies were included that examined frequent use (>1 contact during study period) of EMS or other services with arrival via EMS. Paediatric patients were defined as <18 years of age or otherwise defined by study authors as paediatric/adolescent/children. Data were extracted using a structured proforma, and quality was assessed using the Standard Quality Assessment Criteria for Quantitative Studies but did not influence inclusion decisions. Data were presented using narrative synthesis.

RESULTS

The search resulted in 4172 unique references, with 12 papers included in the review from 7 countries. Four were EMS studies, and eight Emergency Department with arrival via EMS. All studies used retrospective designs, with no interventional studies identified. Paediatric frequent EMS users were more likely to use services for medical reasons rather than trauma, including respiratory complaints, mental health and seizures, but data on gender and ethnicity were inconclusive and silent on socioeconomic status. There was no consistency in definitions of either a paediatric patient or of frequent use.

CONCLUSION

The broad range of reasons for frequent use suggests that a single intervention is unlikely to be effective at addressing the causes of frequent use. There is a need for further research to better identify the underlying reasons for frequent EMS use among paediatric patients and to develop interventions in this population.

Stakeholder perspectives of piloting pre-hospital COVID-19 lateral flow testing and direct admissions pathway: exploring why well-received ideas have low uptake

Introduction

In January 2021, Yorkshire Ambulance Service and Hull University Teaching Hospitals implemented a pilot COVID-19 lateral flow testing (LFT) and direct admissions pathway to assess the feasibility of using pre-hospital LFTs to bypass the emergency department. Due to lower than anticipated uptake of the pilot among paramedics, we undertook a process evaluation to assess reasons for low uptake and perceived potential benefits and risks associated with the pilot.

Methods

We undertook semi-structured telephone interviews with 12 paramedics and hospital staff. We aimed to interview paramedics who had taken part in the pilot, those who had received the project information but not taken part and ward staff receiving patients from the pilot. We transcribed interviews verbatim and analysed data using thematic analysis.

Results

Participation in the pilot appeared to be positively influenced by high personal capacity for undertaking research (being 'research-keen') and negatively influenced by 'COVID-19 exhaustion', electronic information overload and lack of time for training. Barriers to use of the pathway related to 'poor timing' of the pilot, restrictive patient eligibility and inclusion criteria. The rapid rollout meant that paramedics had limited knowledge or awareness of the pilot, and pilot participants reported poor understanding of the pilot criteria or the rationale for the criteria. Participants who were involved in the pilot were overwhelmingly positive about the intervention, which they perceived as having limited risks and high potential benefits to the health service, patients and themselves, and supported future roll-out.

Conclusions

Ambulance clinician involvement in rapid research pilots may be improved by using multiple recruitment methods (electronic and other), providing protected time for training and increased direct support for paramedics with lower personal capacity for research. Improved communication (including face-to-face approaches) may help understanding of eligibility criteria and increase appropriate recruitment.

Uncomfortable yet necessary: The impact of PPE on communication in emergency medicine

BACKGROUND

The efficacy of pre-hospital emergency services is heavily dependent on the effective communication of care providers. This effective communication occurs between providers as part of a team and also among providers interacting with family members and patients. The COVID-19 pandemic introduced a number of communication challenges to emergency care, which are primarily linked to the increased use of personal protective equipment (PPE).

OBJECTIVE

We sought to analyze the impacts of the COVID-19 pandemic on emergency medical service (EMS) workers and pre-hospital care delivery.

METHODS

We conducted focus groups and one-on-one interviews with fire-based EMS first responders between September 2021 and 2022. Interviews included questions about job-related stress, EMS skills, work experiences and changes during COVID-19. Interviews were recorded, independently dual coded and analyzed for themes.

RESULTS

Two hundred twenty-three first responders participated in 40 focus groups and 40 lead paramedics participated in individual interviews. We found that additional use of PPE was reported to have significantly impaired efficiency and perceptions of quality of care-among EMS team members and also between EMS workers and patients. EMS personnels also experienced on-scene hostility on arrival (from both families and other agencies). Extensive use of PPE muffles voices, obscures facial expressions and can cause team members to have difficulty recognizing and communicating with one another and can be a barrier to showing empathy and connecting with patients. Creative solutions such as putting a hand on someone's shoulder, wearing name tags on suits and explaining rationale for perceived delays were mentioned as methods to transcend these barriers. The appearance of providers in heavy PPE can be unsettling and create barriers to human connection, particularly for pediatric patients.

CONCLUSION

Human connection is an important element of health-care delivery and healing. These findings shed light on new skills that are needed to initiate and maintain human connection in these times of PPE use, especially full-body PPE. Awareness of the communication and empathy barriers posed by PPE is the first step to improving provider-patient interactions in pre-hospital EMS. Additionally, 'communication-friendly' adaptations of PPE equipment may be an important area for future research and development in manufacturing and the health-care industry.

Association of the COVID-19 pandemic with bystander cardiopulmonary resuscitation for out-of-hospital cardiac arrest: a population-based analysis in Tokyo, Japan

BACKGROUND

The impact of the COVID-19 pandemic on bystander cardiopulmonary resuscitation (CPR) for out-of-hospital cardiac arrest (OHCA) is unclear. This study aimed to investigate whether rates of bystander CPR and patient outcomes changed during the initial state of emergency declared in Tokyo for the COVID-19 pandemic.

METHODS

This retrospective study used data from a population-based database of OHCA maintained by the Tokyo Fire Department. By comparing data from the periods before (18 February to 6 April 2020) and during the declaration of a state of emergency (7 April 2020 to 25 May 2020), we estimated the change in bystander CPR rate, prehospital return of spontaneous circulation, and survival and neurological outcomes 1 month after OHCA, accounting for outcome trends in 2019. We performed a multivariate regression analysis to evaluate the potential mechanisms for associations between the state of emergency and these outcomes.

RESULTS

The witnessed arrest rates before and after the declaration periods in 2020 were 42.5% and 45.1%, respectively, compared with 44.1% and 44.7% in the respective corresponding periods in 2019. The difference between the two periods in 2020 was not statistically significant when the trend in 2019 was considered. The bystander CPR rates before and after the declaration periods significantly increased from 34.4% to 43.9% in 2020, an 8.3% increase after adjusting for the trend in 2019. This finding was significant even after adjusting for patient and bystander characteristics and the emergency medical service response. There were no significant differences between the two periods in the other study outcomes.

CONCLUSION

The COVID-19 pandemic was associated with an improvement in the bystander CPR rate in Tokyo, while patient outcomes were maintained. Pandemic-related changes in patient and bystander characteristics do not fully explain the underlying mechanism; there may be other mechanisms through which the community response to public emergency increased during the pandemic.

Acute behavioural disturbance: recognition, assessment and management

Acute behavioural disturbance (ABD) is a clinical emergency which typically affects overweight men in their mid-thirties who chronically misuse illicit stimulants. People with ABD are most likely to be seen in police custody or emergency departments, therefore nurses working in these areas must be able to recognise the signs and symptoms and know how to respond appropriately. Presentation varies, but the signs and symptoms commonly include extreme agitation, hyperthermia, hostility and exceptional strength without fatigue. Further, it is important to recognise that people with ABD are at risk of developing metabolic acidosis, hyperkalaemia, rhabdomyolysis or disseminated intravascular coagulation. This article gives an overview of ABD and describes the main elements of management and treatment.

Tendency to call an ambulance or attend an emergency department for minor or non-urgent problems: a vignette-based population survey in Britain

BACKGROUND

There are concerns about high levels of demand for emergency health services. The aim was to identify the characteristics of the British population with a tendency to contact emergency medical services and EDs for minor or non-urgent problems.

METHODS

A survey of the British adult population in 2018. Six vignettes were constructed about illness in adults (cough/sore throat or diarrhoea/vomiting), injury in adults (sore rib or back pain) and fever in children (occurring weekday or weekend).

RESULTS

The response rate was 42%, with 2906 respondents. 11% (319/2716) of respondents selected to contact an ambulance and 43% ED, mainly for the vignettes about fever in children and sore rib. Males, people from ethnic minority communities and older people had a tendency to contact emergency services for minor problems. Tendency to call an ambulance was also characterised by 'low resources' (manual or unskilled occupations, no car, low health literacy), worry that a symptom might be serious, distress (feeling overwhelmed by health problems) and frequent use of EDs. For EDs, there was an attraction to EDs because of availability of tests.

CONCLUSION

Whereas use of emergency ambulances for minor or non-urgent problems appeared to be driven by people's lack of resources, including lack of transport, use of EDs appeared to be driven by their attractive characteristic of offering tests quickly.

Use of unmanned aerial systems in the health care

The use of unmanned aerial systems (drones) in the medical care, especially for the distribution of blood, laboratory samples, drugs and medical supplies is the subject of several research and practical pilot projects around the world with a wide perspective of use in civilian and military settings. For the purposes of medical service of troops, this is a suitable and promising solution for strengthening of pre-hospital care in advanced lines and in small combat task forces, which often operate in the rear of the enemy, in conditions of irregular warfare and difficult to access medevac. Deploying drones can effectively enhance the capabilities of mobile medical teams and at the same time life-saving prehospital healthcare concepts such as "remote damage control resuscitation" and "blood far forward". The paper presents a brief overview of the development and use of drones in medical applications for civil and military use.

Predictors of hospital prenotification for STEMI and association of prenotification with outcomes

BACKGROUND

Delay to reperfusion in ST-elevation myocardial infarction (STEMI) is detrimental, but can be minimised with prehospital notification by ambulance to the treating hospital. We aimed to assess whether prenotification was associated with improved first medical contact to balloon times (FMC-BT) and whether this resulted in better clinical outcomes. We also aimed to identify factors associated with use of prenotification.

METHODS

This was a retrospective study of prospective Victorian Cardiac Outcomes Registry data for patients undergoing primary percutaneous coronary intervention for STEMI from 2013-2018. Postcardiac arrest were excluded. Patients were grouped by whether they arrived by ambulance with prenotification (group 1), arrived by ambulance without prenotification (group 2) or self-presented (group 3). We compared groups by FMC-BT, incidence of major adverse cardiac and cerebrovascular events (MACCE), mortality and factors associated with the use of prenotification.

RESULTS

2891 patients were in group 1 (79.3% male), 1620 in group 2 (75.7% male) and 1220 in group 3 (82.9% male). Patients who had prenotification were more likely to present in-hours (p=0.004) and self-presenters had lowest rates of cardiogenic shock (p<0.001). Prenotification had shorter FMC-BT than without prenotification (104 min vs 132 min, p<0.001) Self-presenters had superior clinical outcomes, with no difference between ambulance groups. Groups 1 and 2 had similar 30-day MACCE outcomes (7.4% group 1 vs 9.1% group 2, p=0.05) and similar mortality (4.6% group 1 vs 5.9% group 2, p=0.07). In multivariable analysis, male gender, right coronary artery culprit and in-hours presentation independently predicted use of prenotification (all p<0.05).

CONCLUSION

Differences in clinical characteristics, particularly gender, time of presentation and culprit vessel may influence ambulance prenotification. Ambulance cohorts have high-risk features and worse outcomes compared with self-presenters. Improving system inequality in prehospital STEMI diagnosis is recommended for fastest STEMI treatment.

Perception and success rate of using advanced airway management by hospital-based paramedics in the Kingdom of Saudi Arabia

Objective

The study aimed to measure the success rate of pre-hospital tracheal intubation (TI) and supraglottic airway devices (SADs) performed by paramedics for adult patients and to assess the perception of paramedics of advanced airway management.

Method

The study consisted of two phases: phase 1 was a retrospective analysis to assess the TI and SADs' success rates when applied by paramedics for adult patients aged >14 years from 2012 to 2017, and phase 2 was a distributed questionnaire to assess paramedics' perception of advanced airway management.

Result

In phase 1, 24 patients met our inclusion criteria. Sixteen (67%) patients had TI, of whom five had failed TI but then were successfully managed using SADs. The TI success rate was 69% from the first two attempts compared to SADs (100% from first attempt). In phase 2, 63/90 (70%) paramedics responded to the questionnaire, of whom 60 (95%) completed it. Forty-eight (80%) paramedics classified themselves to be moderately or very competent with advanced airway management. However, most of them (80%) performed only 1-5 TIs or SADs a year.

Conclusion

Hospital-based paramedics (i.e. paramedics who are working at hospitals and not in the ambulance service, and who mostly respond to small restricted areas in Saudi Arabia) handled few patients requiring advanced airway management and had a higher competency level with SADs than with TI. The study findings could be impacted by the low sample size. Future research is needed on the success rate and impact on outcomes of using pre-hospital advanced airway management, and on the challenges of mechanical ventilation use during interfacility transfer.

Outcomes following out-of-hospital cardiac arrest in the aeromedical retrieval population of the remote Top End of the Northern Territory, Australia

OBJECTIVE

Out-of-hospital cardiac arrest is an event with an extremely poor prognosis. There is limited literature on the outcomes for regional Australia, with none specifically addressing remote populations. We aimed to assess out-of-hospital cardiac arrest outcomes in the aeromedical retrieval population of the Top End Medical Retrieval Service.

DESIGN

We retrospectively identified all cardiac arrests, deaths and patients who had cardiopulmonary resuscitation within the aeromedical retrieval database for a 5-year period from January 2012 to December 2016.

SETTING

Retrieval patients across the Top End of the Northern Territory, Australia.

PARTICIPANTS

All patients within the cohort with a non-traumatic out-of-hospital cardiac arrest.

MAIN OUTCOME MEASURES

Data were collected on outcomes as per Utstein definitions, along with patient demographics, retrieval timings and interventions.

RESULTS

Seventy-five patients suffering cardiac arrest were identified, with 58 having a non-traumatic arrest in an out-of-hospital setting. The median age of the cohort was 40 years, and 53% had an initial shockable rhythm. Return of spontaneous circulation was achieved in 55% and 43% survived to hospital. The survival to hospital discharge and 28 days were 31% and 29%, respectively.

CONCLUSIONS

Although the study has a small sample size and limitations on generalisability due to the restricted nature of the cohort selection, the results suggest a 28-day survival rate is potentially comparable to other regions of Australia and the rest of the world. Further research needs to be undertaken in out-of-hospital cardiac arrest in remote regions to establish a true population-based cohort and ascertain where improvements can be made.

Impact of a physician - critical care practitioner pre-hospital service in Wales on trauma survival: a retrospective analysis of linked registry data

The Emergency Medical Retrieval and Transfer Service for Wales launched in 2015. This service delivers senior pre-hospital doctors and advanced critical care practitioners to the scene of time-critical life- and limb-threatening incidents to provide advanced decision-making and pre-hospital clinical care. The impact of the service on 30-day mortality was evaluated retrospectively using a data linkage system. The study included patients who sustained moderate-to-severe blunt traumatic injuries (injury severity score ≥ 9) between 27 April 2015 and 30 November 2018. The association between pre-hospital management by the Emergency Medical Retrieval and Transfer Service and 30-day mortality was assessed using multivariable logistic regression. In total, data from 4035 patients were analysed, of which 412 (10%) were treated by the Emergency Medical Retrieval and Transfer Service. A greater proportion of patients treated by the Emergency Medical Retrieval and Transfer Service had an injury severity score ≥ 16 and Glasgow coma scale ≤ 12 (288 (70%) vs. 1435 (40%) and 126 (31%) vs. 325 (9%), respectively). The unadjusted 30-day mortality rate was 11.7% for patients managed by the Emergency Medical Retrieval and Transfer Service compared with 9.6% for patients managed by standard pre-hospital care services. However, after adjustment for differences in case-mix, the 30-day mortality rate for patients treated by the Emergency Medical Retrieval and Transfer Service was 37% lower (adjusted odds ratio 0.63 (95%CI 0.41-0.97); p = 0.037). The introduction of an emergency medical retrieval service was associated with a reduction in 30-day mortality for patients with blunt traumatic injury.

Hypofibrinogenaemia and hypocalcaemia in adult trauma patients receiving pre-hospital packed red blood cell transfusions: Potential for supplementary pre-hospital therapeutic interventions

OBJECTIVE

To report the arrival ionised calcium (iCa) and fibrinogen concentrations in trauma patients treated with packed red blood cells by the road-based high-acuity response units of a metropolitan ambulance service.

METHODS

A retrospective review of trauma patients treated with packed red blood cells by high-acuity response units between January 2012 and December 2016. Patients were identified from databases at southeast Queensland adult trauma centres, Pathology Queensland Central Transfusion Laboratory, Gold Coast University Hospital blood bank and the Queensland Ambulance Service. Patient characteristics, results of laboratory tests within 30 min of ED arrival were analysed.

RESULTS

A total of 164 cases were analysed. The median injury severity score was 33.5 (interquartile range 22-41), with blunt trauma the commonest mechanism of injury (n = 128, 78.0%). Fifty-eight of the 117 patients (24.4%) with fibrinogen measured had a fibrinogen concentration ≤1.5 g/L; 79 of the 123 patients (64.2%) with an international normalised ratio (INR) measurement had an INR >1.2; 97 of 148 patients (63.8%) with an iCa measured, had an iCa below the Pathology Queensland reference range of 1.15-1.32 mmol/L. Arrival fibrinogen concentration ≤1.5 g/L and arrival iCa ≤1.00 were associated with in-hospital mortality with odds ratio 11.90 (95% confidence interval 4.50-31.65) and odds ratio 4.97 (95% confidence interval 1.42-17.47), respectively.

CONCLUSIONS

Hypocalcaemia and hypofibrinogenaemia on ED arrival were common in this cohort. Future work should evaluate whether outcomes improve by correction of these deficits during the pre-hospital phase of trauma care.

Investigating first-year graduate paramedics' reason for current work location: A cross-sectional, data linkage study

OBJECTIVE

This study aims to describe the demographic and employment characteristics of first-year graduates from a Victorian-based paramedicine course and investigate factors that influenced their choice in place of practice.

DESIGN

Cross-sectional study using data from the Nursing and Allied Health Graduate Outcomes Tracking study.

SETTING

Victoria, Australia.

PARTICIPANTS

First-year graduates (2019) from the Monash University range of paramedicine programs.

MAIN OUTCOME MEASURES

Variables of interest included principal place of practice and the reasons for working in the current location.

RESULTS

Over half of the 2018 paramedicine course graduates responded to the 2019 Graduate Outcomes Survey. Nearly all were registered as paramedics (including double registrants as nurses), and over a fifth were from a rural background; however, less than that were working in a rural area. Of those with complete data, the most cited reasons for current work location were 'spouse/partner's employment or career', 'opportunity for career advancement' and 'scope of practice within the role'.

CONCLUSION

This study provides important insight into the factors associated with rural practice location amongst paramedicine graduates, specifically rural origin or personal, lifestyle and professional influences. The study adds to the sparse literature about paramedic practice location decision-making and highlights the need for further systematic longitudinal research examining the 'where' and 'why'.

Development of an emergency medical services system in Thailand: Roles of the universal health coverage and the national lead agency

This paper describes how the Thai health sector developed nationwide emergency medical services (EMS), despite limited resources and we try to extract lessons applicable to other resource-constrained settings. The government of Thailand has strengthened EMS by integrating it into the general healthcare system and formulating a national development plan and lead agency for EMS. The government emphasized the deployment of low-cost basic-level EMS units stationed near the communities, named as 'first-responder units'. In Khon Kaen Province, which has led the nationwide EMS development of Thailand, the availability of EMS (number of EMS units) and utilisation of EMS (proportion of severe trauma patients transported to hospital by EMS) greatly increased from 2000 to 2017. This success is due to the emphasis on the first-responder units through consistent national policies.

Out-of-hospital cardiac arrest due to hanging: a retrospective analysis

BACKGROUND

There has been little research into the prehospital management of cardiac arrest following hanging despite it being among the most prevalent methods of suicide worldwide. The aim of this study was to report the characteristics, resuscitative treatment and outcomes of patients managed in the prehospital environment for cardiac arrest secondary to hanging and compare these with all-cause out-of-hospital cardiac arrest (OHCA).

METHODS

Data from a UK ambulance service cardiac arrest registry were extracted for all cases in which treatment was provided for OHCA due to hanging between 1 January 2013 and 30 June 2018. Cases were linked to outcome data obtained from the Trauma Audit and Research Network. Comparison of the cohort was made to previously published data from a UK study of all-cause OHCA with 95% CIs calculated for the proportional difference between the studies in selected presentation and outcome variables.

RESULTS

189 cases were identified. 95 patients were conveyed to hospital and four of these survived to discharge. 40 patients were conveyed despite absence of a spontaneous circulation and none of these patients survived. While only three patients were initially in a shockable rhythm, DC shocks were administered in 20 cases. There was one case of failed ventilation prompting front-of-neck access for oxygenation. By comparison with all-cause OHCA the proportion of patients with a spontaneous circulation at hospital handover was similar (27.0% vs 27.5%; 0.5% difference, 95% CI -5.9% to 6.8%, p=0.882) but survival to hospital discharge was significantly lower (2.2% vs 8.4%; 6.2% difference, 95% CI 4.1% to 8.3%, p=0.002).

CONCLUSION

Clinical outcomes following OHCA due to hanging are poor, particularly when patients are transported while in cardiac arrest. Failure to ventilate was uncommon, and clinicians should be alert to the possibility of shockable rhythms developing during resuscitation.

Retrieval medicine and pre-hospital care in remote Australia

Retrieval medicine and pre-hospital care in remote Australia are challenging, requiring competencies in major trauma, high-risk obstetrics, critical care in adults and children, severe mental health-related agitation and envenomation. They keep a city-based retrieval and pre-hospital care doctor on their toes. Cultural fluencies to enhance care for Aboriginal and remote communities are critical during the long hours taken for the patient journey from the accident scene or clinic to definitive care.

A qualitative study to investigate the psychosocial effects of operational deployments on Medical Emergency Response Team personnel

The stressors associated with emergency medical teams responding to critical incidents are well documented; however, the impact of such duties on the UK military personnel had never been investigated. This study explored the psychosocial effects of Medical Emergency Response Teams (MERT) operating in Afghanistan to inform the development of a Resilience Model. A structured and contextually relevant process could then be applied for a team's preparation for, delivery of and recovery from, their duties. A qualitative cross-sectional design used semi-structured interviews and 15 multidisciplinary team members participated. Interviews were transcribed verbatim and data were systematically analysed using grounded theory. Emergent theory poses that developing resilience against the demands of this role is dependent upon personnel having a realistic understanding of the deployed environment by phased immersion within it. This preparatory training generates situational awareness, trust and strong team cohesion, which together with peer and organizational support are necessary factors to effectively cope with the role. To limit the costs of caring, there is a need for MERT personnel to segregate the physiological and emotional aspects of delivering care to the injured; those unable to do so may be at greater risk of poor mental health outcomes. The preparatory training of MERT personnel must be further developed to provide an immersive environment that more closely matches the reality of the role. A period of stability is required post deployment with the support of peers to enable personnel to more efficiently transition back to their home life.

Task-shift Model in Pre-hospital Care and Standardized Nationwide Data Collection in Japan: Improved Outcomes for Out-of-hospital Cardiac Arrest Patients

Out-of-hospital cardiac arrest (OHCA) is a growing worldwide public health concern. Previously, Japan experienced poorer outcomes among OHCA patients than in other high-income countries. In the early 1990s, through policy changes, the Japanese government introduced a task-shift model in pre-hospital care. Some medical practices previously provided by physicians exclusively were delegated to non-physicians, including laypeople. Additionally, we initiated a nationwide data collection system for evaluation. We started a nationwide registry of OHCA patients, a paramedic system to provide advanced life-support care, and basic life-support training for laypeople. In the 2000s, the procedures paramedics could provide were expanded, laypeople were allowed to use automated external defibrillators, and the Utstein style was introduced to the national registry.

Consequently, pre-hospital advanced care and bystander first-aid increased, registry-based research contributed to evidence-based practices, and―most importantly―outcomes of OHCA patients considerably improved. These Japanese experiences demonstrate that streamlining pre-hospital care, including bystander interventions and standardized data collection, can improve OHCA patient outcomes. Despite this progress, however, there still exist many issues to be addressed in response to the changing and increasing care demands within Japan’s aging population.

Pre-Hospital Care Of Patients With Severe Burns In Germany: A Review Of 29 Years Of Experience

Despite the high number of burn injuries worldwide, pre-hospital care differs across regions. Data documenting pre-hospital care of severe burn injuries in Germany are scarce. Nevertheless, efficient prehospital care of burn patients is crucial for later outcomes. Therefore, we retrospectively analyzed pre-hospital care in patients admitted to the burn intensive care unit of a specialized burn center in Germany from 1989 to 2018. Approximately one-third of all admitted patients arrived intubated to the burn intensive care unit. Mean total burned surface area was higher in intubated patients than in non-intubated patients. Hypothermia prevention measures were undertaken in most patients. Although cooling was performed in only 36 primarily admitted patients, it did not have an effect on temperature at admission. Instead, in the regression analysis a positive influence on mortality could be found (p=0.03). Inhalation injury was a reason for intubation and corticosteroid therapy. Corticosteroid use declined over the years and had no significant influence on mortality (p=0.38). Inhalation injury could be diagnosed in only 50.68% of patients receiving corticosteroids. Furthermore, especially in recent years, most patients with inhalation injuries did not receive corticosteroids. Although efficient prehospital care is crucial for later outcomes, standard pre-hospital care through first aiders and emergency personnel has not been applied. Therefore, strategies for information exchange, leading to standardized pre-hospital treatment guidelines, should be given high priority with special attention on pre-hospital cooling. In the future, data from registries and surveys can help expand information regarding pre-hospital burn treatment.

Is weight just a number? The accuracy of UK ambulance paediatric weight guidance - findings from a cross-sectional study

Background:

The weight of children provides the cornerstone of their clinical management, as many drug dosages, equipment sizes, fluid boluses, as well as DC shock energy, are administered on a per kilogram basis. Children who attend hospital are weighed using scales prior to receiving these interventions. This is not possible in the pre-hospital environment. A paucity of evidence exists to support the page for age weight guidance indicated by JRCALC, and it remains unknown if this approach meets the reference standard of 70% of estimations within 10% of actual weight and 95% within 20% of actual weight.

Methods:

We used a cross-sectional study design and collected data from a convenience sample of children who attended the outpatients department of a major hospital in England between July and September 2019. All children aged between 1 and 11 years who were weighed were eligible for inclusion. Outcomes were to determine if the page for age approach meets the reference standard and to determine any implications for care.

Results:

341 children were included in this study. Each age group consisted of varying numbers of children. 50.5% (172/341) of the sample were female. Observed weights ranged from 8.28 to 82.70 kg (median 20.60 kg). The mean weight of girls versus boys was 24.69 kg and 23.39 kg respectively (95% CI -4.12–1.32, p = 0.3123). Observed weights were greater than the page for age guidance weight in all age groups, and the accuracy of page for age weight guidance diminished with age. Adrenaline 1:10,000 doses and defibrillation energy levels guided by page for age differ from those guided by weight, but are not deleterious to care.

Conclusion:

Page for age weight guidance does not meet the reference standard. Most paediatric pre-hospital care is administered by age and not weight. In the absence of an accurate weight, ambulance clinicians should continue to use the page for age system, although the gold standard remains to use an accurate weight measurement. While there are no facilities to weigh children in ambulances, if an accurate weight is available then consideration should be given to using this rather than age.

Tools to predict acute traumatic coagulopathy in the pre-hospital setting: a review of the literature

Introduction:

Recognising acute traumatic coagulopathy (ATC) poses a significant challenge to improving survival in emergency care. Paramedics are in a prime position to identify ATC in pre-hospital major trauma and initiate appropriate coagulopathy management.

Method:

A database literature review was conducted using Scopus, CINAHL and MEDLINE.

Results:

Two themes were identified from four studies: prediction tools, and point-of-care testing. Prediction tools identified key common ATC markers in the pre-hospital setting, including: systolic blood pressure, reduced Glasgow Coma Score and trauma to the chest, abdomen and pelvis. Point-of-care testing was found to have limited value.

Conclusion:

Future research needs to explore paramedics using prediction tools in identifying ATC, which could alert hospitals to prepare for blood products for damage control resuscitation.

Emergency workers' experiences of the use of section 136 of the Mental Health Act 1983: interpretative phenomenological investigation

AIMS AND METHOD

To explore the experiences of emergency workers dealing with incidents in which section 136 of the Mental Health Act 1983 is invoked by the police. Data from interviews with police officers and ambulance workers in a London locality were subject to interpretative phenomenological analysis.

RESULTS

Participants felt they were the first port of call and that training should be improved to help them deal with those experiencing mental health crises in the community. Police participants noted time pressures trying to gain individuals' trust and described section 136 detention as sometimes feeling like a betrayal of the individual. Most participants had negative experiences of admissions to the 136 suite; several suggested ways of improving the admissions system. Several went beyond their expected duties to ensure that distressed individuals were supported before accessing mental healthcare services.

CLINICAL IMPLICATIONS

Improving training of emergency workers in dealing with mental health crises would also help with aftercare decision-making. Learning identified from the participants' experiences lends support to collaboration between emergency and mental health services, an important step towards improving the section 136 process so that detainees can access help without unnecessary delay.

How much ambulance personnel know about basic life support (BLS)? A hospital-based study from Eastern India

Background:

Basic life support (BLS) is an important component of emergency medical management. Ambulance personnel play a key role in resuscitation to save a life before reaching the hospital. We do not have any published data about the level of knowledge on BLS among the ambulance personnel.

Objective:

This study was done with the objective to assess the level of knowledge on BLS among the ambulance personnel.

Materials and Methods:

A cross-sectional study was done in the emergency department (ED) of a tertiary care hospital. Universal sampling was done taking all the personnel of ambulances over the period of one month. Data were collected about the type of vehicle used for ambulance, the number of personnel in an ambulance, educational qualifications, and equipment present in their ambulances. The questionnaire to capture the level of knowledge were based on American Heart Association 2015 guidelines.

Result:

The total number of ambulance arrivals was 729 times. But data analysis was done from 104 ambulances excluding the repeat arrivals and those who did not give consent. There were 62 type-C and D ambulances, and 42 were type-B ambulances. Total of 210 personnel were there in 104 ambulances. Seventy-nine team leaders did not have any paramedical degrees. Fifty-eight team leaders were trained in BLS before working in an ambulance. In spite of this, 66 (63%) team leaders had poor performance (score of 0 to 4).

Conclusion:

The level of knowledge on BLS was poor in more than half of the ambulance personnel. They should be trained regularly on providing BLS.

Pre-Hospital Management of Critically Ill Patients with SARS-CoV-2 Infection: A Retrospective Multicenter Study

INTRODUCTION

The COVID-19 outbreak had a major impact on healthcare systems worldwide. Our study aims to describe the characteristics and therapeutic emergency mobile service (EMS) management of patients with vital distress due to COVID-19, their in-hospital care pathway and their in-hospital outcome.

METHODS

This retrospective and multicentric study was conducted in the six main centers of the French Greater East region, an area heavily impacted by the pandemic. All patients requiring EMS dispatch and who were admitted straight to the intensive care unit (ICU) were included. Clinical data from their pre-hospital and hospital management were retrieved.

RESULTS

We included a total of 103 patients (78.6% male, median age 68). In the initial stage, patients were in a critical condition (median oxygen saturation was 72% (60-80%)). In the field, 77.7% (CI 95%: 71.8-88.3%) were intubated. Almost half of our population (45.6%, CI 95%: 37.1-56.9%) had clinical Phenotype 1 (silent hypoxemia), while the remaining half presented Phenotype 2 (acute respiratory failure). In the ICU, a great number had ARDS (77.7%, CI 95% 71.8-88.3% with a PaO2/FiO2 < 200). In-hospital mortality was 33% (CI 95%: 24.6-43.3%). The two phenotypes showed clinical and radiological differences (respiratory rate, OR = 0.98, p = 0.02; CT scan lesion extension >50%, OR = 0.76, p < 0.03). However, no difference was found in terms of overall in-hospital mortality (OR = 1.07, p = 0.74).

CONCLUSION

The clinical phenotypes appear to be very distinguishable in the pre-hospital field, yet no difference was found in terms of mortality. This leads us to recommend an identical management in the initial phase, despite the two distinct presentations.

Pre-hospital environment bleeding: from history to future prospects

While the blood was related to life since antiquity, scientific investigations on anatomy and physio-logy of the circulation system had to wait until the arrival of the 16th century. In trauma patients, hemorrhagic shock is the main risk factor for multiple organ dysfunction and consequent increased mortality. On the pre-hospital setting intravenous administration of crystalloid solution became the more common intervention during resuscitation of trauma patient due to many reasons although currently new discussions have blossomed on regards type of fluids and resuscitation. The object of this manuscript is to review the history of pre-hospital care bleeding management and to gather new perspectives for the future. Herein authors discuss several issues on bleeding control: 1. Current status and future possibilities on stop the bleeding in the the pre-hospital setting - movements after the Hartford Consensus, use of topic homeostatic agents, tourniquets, REBOA and other radical interventions; 2. Damage control resuscitation in the pre-hospital environment - is massive transfusion protocol feasible at this setting? Tranexemic acid should be done? Possibilities that may improve survival and coagulopathy understanding; 3. Critical decision and decision making on stop the bleed; 4. Proposed flowchart on bleeding control. The implementation of measures to stop acute bleeding in the pre-hospital setting is a well-known and well-founded measure. However, the provision of current evidence demonstrates that these measures go far beyond compression and elevation of the limb as was known in the past. The deep understanding of the mechanism of coagulopathy and the new adjuvant arsenal to control bleeding are essential for a better quality of pre-hospital medical care as well as lower mortality rates.

Critical Communication: A Cross-sectional Study of Signout at the Prehospital and Hospital Interface

Introduction Miscommunication during patient handoff contributes to an estimated 80% of serious medical errors and, consequently, plays a key role in the estimated five million excess deaths annually from poor quality of care in low- and middle-income countries (LMICs). Objective The objective of this study was to assess signout communication during patient handoffs between prehospital personnel and hospital staff. Methods This is a cross-sectional study, with a convenience sample of 931 interfacility transfers for pregnant women across four states from November 7 to December 13, 2016. A complete signout, as defined for this study, contains all necessary signout elements for patient care exchanged verbally or in written form between an emergency medical technician (EMT) and a physician or nurse. Results Enrollment of 786 cases from 931 interfacility transfers resulted in 1572 opportunities for signout. EMTs and a physician or nurse signed out in 1549 cases (98.5%). Signout contained all elements in 135 cases (8.6%). The mean percentage of signout elements included was 45.2% (95% CI, 43.9-46.6). Physician involvement was correlated with a higher mean percent (63.4% [95% CI, 62-64.8]) compared to nurse involvement (23.6% [95% CI, 22.5-24.8]). With respect to the frequency of signout communication, 63.1% of EMTs reported often or always giving signout, and 60.5% reported often or always giving signout; they reported feeling moderately to very comfortable with signout (73.7%) and 34.1% requested further training. Conclusions Physicians, nurses, and the EMTs conducted signout 99% of the time but often fell short of including all elements required for optimal patient care. Interventions aimed at improving the quality of patient care must include strengthening signout communication.

Nerve agents: a guide for emergency nurses. Part 1

Recent incidents in the UK and the alleged chemical attacks in Syria by the Bashar al-Assad regime have brought the subject of chemical weapons back into the public domain. To date these types of event have been relatively rare because terrorist plans to harm large numbers of people have mostly been thwarted. This is the first part of a two-part article on nerve agents. Part one gives an overview of these agents, their historical background and manufacture, and how the agents affect physiology. Part two, which will appear in the next issue, considers the pre-hospital response to the use of nerve agents, including effective triage and decontamination, and in-hospital treatment.

Reducing attendance at trauma clinics by providing first-point-of-contact treatment

In 2016, the urgent and ambulatory care service in Oxfordshire formed part of a cross-organisational partnership working group. The group consisted of Oxford Health NHS Foundation Trust community minor injury units (MIUs) at Abingdon and Witney, and Oxford University Hospitals NHS Foundation Trust (OUH) trauma and orthopaedic specialties and emergency department (ED). The aim was to redesign fracture management pathways and delivery of definitive care at patients' first point of contact with the NHS. This article discusses the implementation of the trauma pathways in two of Oxfordshire's community MIUs. In total, a range of seven common fracture pathways seen in the ED and community MIUs were redesigned so that patients were treated definitively at the first point of contact and discharged with a safety net supported by leaflets; a direct contact facility to OUH trauma specialties was part of the safety net allowing patients to self-refer to the trauma clinic if they had any concerns. In total, 513 patients were treated and discharged on see, treat and discharge fracture pathways in the first year of pathway operation, which represented a 21% decrease in patient referral rates to the trauma clinic at OUH compared with the previous year.