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1.
Scand J Trauma Resusc Emerg Med ; 32(1): 51, 2024 Jun 05.
Article En | MEDLINE | ID: mdl-38840226

BACKGROUND: Pediatric trauma patients constitute a significant portion of the trauma population treated by Swedish Emergency Medical Services (EMS), and trauma remains a notable cause of death among Swedish children. Previous research has identified potential challenges in prehospital assessments and interventions for pediatric patients. In Sweden, there is limited information available regarding pediatric trauma patients in the EMS. The aim of this study was to investigate the prevalence of pediatric trauma patients within the Swedish EMS and describe the prehospital assessments, interventions, and clinical outcomes. METHODS: This retrospective observational study was conducted in a region of Southwestern Sweden. A random sample from ambulance and hospital records from the year 2019 was selected. Inclusion criteria were children aged 0-16 years who were involved in trauma and assessed by EMS clinicians. RESULTS: A total of 440 children were included in the study, representing 8.4% of the overall trauma cases. The median age was 9 years (IQR 3-12), and 60.5% were male. The leading causes of injury were low (34.8%) and high energy falls (21%), followed by traffic accidents. The children were assessed as severely injured in 4.5% of cases. A quarter of the children remained at the scene after assessment. Complete vital signs were assessed in 29.3% of children, and 81.8% of children were assessed according to the ABCDE structure. The most common intervention performed by prehospital professionals was the administration of medication. The mortality rate was 0.2%. CONCLUSIONS: Pediatric trauma cases accounted for 8.4% of the overall trauma population with a variations in injury mechanisms and types. Vital sign assessments were incomplete for a significant proportion of children. The adherence to the ABCDE structure, however, was higher. The children remained at the scene after assessment requires further investigation for patient safety.


Ambulances , Emergency Medical Services , Wounds and Injuries , Humans , Sweden/epidemiology , Retrospective Studies , Child , Male , Female , Ambulances/statistics & numerical data , Child, Preschool , Wounds and Injuries/therapy , Wounds and Injuries/epidemiology , Wounds and Injuries/mortality , Adolescent , Infant , Infant, Newborn
2.
PLoS One ; 19(5): e0298933, 2024.
Article En | MEDLINE | ID: mdl-38718079

Ambulance services around the world vary according to regional, cultural and socioeconomic conditions. Many countries apply different health policies locally. In Turkey, transportation from hospital to home has started to form an important part of ambulance services in recent years. The increase in the number of patients whose treatment has been completed and waiting to be referred may hinder the work of the emergency services. The aim of this study was to examine the costs, indications, and impact on workload of patients sent home by ambulance. Patients were divided into two groups according to the reasons for referral. The distance to home, transport time and cost were calculated according to the reasons for transport. Patients who were transferred to other clinics or hospitals by ambulance were excluded from the study. The findings showed that the hospital-to-home transfer rate during the study period was 11.4%. Although 9.7% of all cases transferred from our hospital to home were due to social indications, these cases accounted for 16.26% of the total costs. These results suggest that providing home transport services to selected patient groups for medical reasons should be seen as part of the treatment. However, the indications for home transport should not be exceeded and an additional burden should not be placed on the fragile health service.


Emergency Medical Services , Humans , Emergency Medical Services/economics , Female , Male , Middle Aged , Turkey , Adult , Ambulances/statistics & numerical data , Ambulances/economics , Aged , Transportation of Patients/economics , Transportation of Patients/statistics & numerical data , Home Care Services/economics , Home Care Services/statistics & numerical data , Adolescent
3.
WMJ ; 123(2): 88-94, 2024 May.
Article En | MEDLINE | ID: mdl-38718235

INTRODUCTION: Traumatic spinal cord injury (tSCI) is a devastating event that can cause permanent loss of function or disability. Time to surgical decompression of the spinal cord affects outcomes and is a critical principle in management of tSCI. One of the major determinants of time to decompression is transport time. To date, no study has compared the neurological outcomes of tSCI patients transported via ground/ambulance versus air/helicopter. OBJECTIVE: This retrospective cohort study sought to assess the association of the mode of transport on the neurological outcomes of tSCI patients. METHODS: Data from 46 ground transport and 29 air transport patients with tSCI requiring surgical decompression were collected. Outcomes were assessed by the change in American Spinal Injury Association Impairment Scale (AIS) grade from admission to discharge. Additionally, the utilization of air versus ground transport was assessed based on the distance from the admitting institution. RESULTS: Among the transport groups, there were no significant differences (PP < 0.05) in patient demographics. Helicopter transport patients demonstrated higher rates of AIS grade improvement (P = 0.004), especially among AIS grade A/grade B patients (P = 0.02; P = 0.02, respectively), compared to the ambulance transport group. Additionally, within the cohort of patients undergoing decompression within 0 to 12 hours, helicopter transport was associated with higher AIS grade improvement (P = 0.04) versus the ambulance transport group. Helicopter transport was used more frequently at distances greater than 80 miles from the admitting institution (P = 0.01). CONCLUSIONS: This study suggests that helicopter transport of tSCI patients requiring surgical decompression was associated with improved neurological outcomes compared to patients transported via ambulance.


Air Ambulances , Ambulances , Decompression, Surgical , Spinal Cord Injuries , Humans , Spinal Cord Injuries/therapy , Female , Male , Retrospective Studies , Middle Aged , Adult , Treatment Outcome , Wisconsin/epidemiology
5.
PLoS One ; 19(5): e0302524, 2024.
Article En | MEDLINE | ID: mdl-38753728

Acute behavioural disturbance (ABD), sometimes called 'excited delirium', is a medical emergency. In the UK, some patients presenting with ABD are managed by advanced paramedics (APs), however little is known about how APs make restraint decisions. The aim of this research is to explore the decisions made by APs when managing restraint in the context of ABD, in the UK pre-hospital ambulance setting. Seven semi-structured interviews were undertaken with APs. All participants were experienced APs with post-registration, post-graduate advanced practice education and qualifications. The resulting data were analysed using reflexive thematic analysis, informed by critical realism. We identified four interconnected themes from the interview data. Firstly, managing complexity and ambiguity in relation to identifying ABD patients and determining appropriate treatment plans. Secondly, feeling vulnerable to professional consequences from patients deteriorating whilst in the care of APs. Thirdly, negotiating with other professionals who have different roles and priorities. Finally, establishing primacy of care in relation to incidents which involve police officers and other professionals. A key influence was the need to characterise incidents as medical, as an enabler to establishing clinical leadership and decision-making control. APs focused on de-escalation techniques and sought to reduce physical restraint, intervening with pharmacological interventions if necessary to achieve this. The social relationships and interactions with patients and other professionals at the scene were key to success. Decisions are a source of anxiety, with fears of professional detriment accompanying poor patient outcomes. Our results indicate that APs would benefit from education and development specifically in relation to making ABD decisions, acknowledging the context of inter-professional relationships and the potential for competing and conflicting priorities. A focus on joint, high-fidelity training with the police may be a helpful intervention.


Ambulances , Decision Making , Emergency Medical Services , Qualitative Research , Restraint, Physical , Humans , United Kingdom , Male , Allied Health Personnel/psychology , Female , Emergency Medical Technicians/psychology , Emergency Medical Technicians/education , Adult , Paramedics
6.
JMIR Public Health Surveill ; 10: e46029, 2024 05 10.
Article En | MEDLINE | ID: mdl-38728683

BACKGROUND: The COVID-19 pandemic impacted mental health and health care systems worldwide. OBJECTIVE: This study examined the COVID-19 pandemic's impact on ambulance attendances for mental health and overdose, comparing similar regions in the United Kingdom and Canada that implemented different public health measures. METHODS: An interrupted time series study of ambulance attendances was conducted for mental health and overdose in the United Kingdom (East Midlands region) and Canada (Hamilton and Niagara regions). Data were obtained from 182,497 ambulance attendance records for the study period of December 29, 2019, to August 1, 2020. Negative binomial regressions modeled the count of attendances per week per 100,000 population in the weeks leading up to the lockdown, the week the lockdown was initiated, and the weeks following the lockdown. Stratified analyses were conducted by sex and age. RESULTS: Ambulance attendances for mental health and overdose had very small week-over-week increases prior to lockdown (United Kingdom: incidence rate ratio [IRR] 1.002, 95% CI 1.002-1.003 for mental health). However, substantial changes were observed at the time of lockdown; while there was a statistically significant drop in the rate of overdose attendances in the study regions of both countries (United Kingdom: IRR 0.573, 95% CI 0.518-0.635 and Canada: IRR 0.743, 95% CI 0.602-0.917), the rate of mental health attendances increased in the UK region only (United Kingdom: IRR 1.125, 95% CI 1.031-1.227 and Canada: IRR 0.922, 95% CI 0.794-1.071). Different trends were observed based on sex and age categories within and between study regions. CONCLUSIONS: The observed changes in ambulance attendances for mental health and overdose at the time of lockdown differed between the UK and Canada study regions. These results may inform future pandemic planning and further research on the public health measures that may explain observed regional differences.


Ambulances , COVID-19 , Drug Overdose , Interrupted Time Series Analysis , Humans , COVID-19/epidemiology , Ambulances/statistics & numerical data , United Kingdom/epidemiology , Canada/epidemiology , Drug Overdose/epidemiology , Male , Adult , Female , Middle Aged , Young Adult , Adolescent , Aged , Mental Disorders/epidemiology
7.
BMC Emerg Med ; 24(1): 81, 2024 May 12.
Article En | MEDLINE | ID: mdl-38735937

BACKGROUND: In pre-hospital setting, ambulance provides emergency care and means of transport to arrive at appropriate health centers are as vital as in-hospital care, especially, in developing countries. Accordingly, Ethiopia has made several efforts to improve accessibility of ambulances services in prehospital care system that improves the quality of basic emergency care. Yet, being a recent phenomenon in Ethiopia, empirical studies are inadequate with regard to the practice and determinants of ambulance service utilization in pre-hospital settings. Hence, this study aimed to assess the ambulance service utilization and its determinants among patients admitted to the Emergency Departments (EDs) within the context of pre-hospital care system in public hospitals of Jimma City. METHOD: A cross-sectional study design was used to capture quantitative data in the study area from June to July 2022. A systematic sampling technique was used to select 451 participants. Interviewer-administered questionnaire was used to collect data. Data analysis was done using SPSS version 26.0; descriptive and logistic regressions were done, where statistical significance was determined at p < 0.05. RESULTS: Ambulance service was rendered to bring about 39.5% (of total sample, 451) patients to hospitals. The distribution of service by severity of illnesses was 48.7% among high, and 39.4% among moderately acute cases. The major determinants of ambulance service utilization were: service time (with AOR, 0.35, 95%CI, 0.2-0.6 for those admitted to ED in the morning, and AOR, 2.36, 95%CI, 1.3-4.4 for those at night); referral source (with AOR, 0.2, 95%CI, 0.1-0.4 among the self-referrals); mental status (with AOR, 1.9, 95%CI, 1-3.5 where change in the level of consciousness is observed); first responder (AOR, 6.3 95%CI, 1.5-26 where first responders were the police, and AOR, 3.4, 95%C1, 1.7-6.6 in case of bystanders); distance to hospital (with AOR,0.37, 95%CI, 0.2-0.7 among the patients within ≤15km radius); and prior experience in ambulance use (with AOR, 4.1,95%CI, 2.4-7). CONCLUSION: Although the utilization of ambulance in pre-hospital settings was, generally, good in Jimma City; lower levels of service use among patients in more acute health conditions is problematic. Community-based emergency care should be enhanced to improve the knowledge and use of ambulance services.


Ambulances , Emergency Medical Services , Humans , Ethiopia , Ambulances/statistics & numerical data , Cross-Sectional Studies , Male , Female , Adult , Middle Aged , Emergency Medical Services/statistics & numerical data , Adolescent , Surveys and Questionnaires , Young Adult , Emergency Service, Hospital/statistics & numerical data , Aged
8.
BMC Emerg Med ; 24(1): 92, 2024 May 31.
Article En | MEDLINE | ID: mdl-38816727

INTRODUCTION: Pre-hospital ambulance service is the most important part of healthcare service. Client satisfaction with the service indicates the degree of adaptation to the appropriate quality and quantity of services. Patients' dissatisfaction with the service can affect their expectations of the overall services that they will receive later in the definitive care facility. However, it is not a well-addressed area in developing countries, including Ethiopia. OBJECTIVE: This study aimed to identify the ambulance service satisfaction level and associated factors among service users in Addis Ababa, Ethiopia. METHODS: A cross-sectional study was conducted in five governmental hospitals in Addis Ababa city. A face-to-face exit interview technique was employed on a total of 410 consecutively selected participants using a pretested tool developed from similar sources. The cleaned data was entered into the Epi-Data Manager 4.6 version and then exported to SPSS version 26 for analysis. The dependent variable was dichotomized into satisfied and unsatisfied to compute bivariate logistic regression. In the multivariate logistic regression model, predictors with a p-value < 0.05 at the 95% CI were considered to have a significant association. RESULT: A total of 410 respondents were included in the study. The mean of participants' responses regarding ambulance personnel, call operator, treatment on the scene, and ambulance subscale was 3.64, 3.48, 3.40, and 3.43, respectively. The study found that only 21.5% of participants were satisfied by the ambulance service they received. There was a statistically significant association between ambulance service satisfaction and age (AOR = 3.52, 95% CI: 1.01-12.36), monthly income (AOR = 3.13, 95% CI: 1.41-6.94), ambulance response time (AOR = 10.33, 95% CI: 2.09-51.06), type of ambulance used (AOR = 4.55, 95% CI: 2.19-9.43), and previous ambulance usage (AOR = 2.33, 95% CI: 1.34-4.05). CONCLUSION: The study found a low level of satisfaction among ambulance users. The findings suggest that ambulance personnel performance is a key determinant of user satisfaction, while treatment at the scene and in the ambulances, and call operator areas require improvement. Age, monthly income, ambulance response time, type of ambulance, and previous ambulance use also influenced satisfaction. Improving the quality of services, reducing response time, and ensuring call operators are trained are vital steps to enhance satisfaction.


Ambulances , Patient Satisfaction , Humans , Ethiopia , Female , Cross-Sectional Studies , Male , Adult , Middle Aged , Young Adult , Adolescent , Emergency Medical Services
9.
J Interprof Care ; 38(4): 664-674, 2024.
Article En | MEDLINE | ID: mdl-38717805

Healthcare is often conducted by interprofessional teams. Research has shown that diverse groups with their own terminology and culture greatly influence collaboration and patient safety. Previous studies have focused on interhospital teams, and very little attention has been paid to team collaboration between intrahospital and prehospital care. Addressing this gap, the current study simulated a common and time-critical event for ambulance nurses (AN) that also required contact with a stroke specialist in a hospital. Today such consultations are usually conducted over the phone, this simulation added a video stream from the ambulance to the neurologist on call. The aim of this study was to explore interprofessional collaboration between AN's and neurologists when introducing video-support in the prehospital stroke chain of care. The study took place in Western Sweden. The simulated sessions were video recorded, and the participants were interviewed after the simulation. The results indicate that video has a significant impact on collaboration and can help to facilitate better understanding among different professional groups. The participants found the video to be a valuable complement to verbal information. The result also showed challenges in the form of a loss of patient focused care. Both ANs and neurologists saw the video as benefiting patient safety.


Cooperative Behavior , Emergency Medical Services , Interprofessional Relations , Patient Care Team , Professional Role , Stroke , Humans , Patient Care Team/organization & administration , Sweden , Emergency Medical Services/organization & administration , Stroke/therapy , Video Recording , Male , Female , Neurologists , Adult , Simulation Training , Ambulances/organization & administration
11.
N Engl J Med ; 390(20): 1862-1872, 2024 May 30.
Article En | MEDLINE | ID: mdl-38752650

BACKGROUND: Treatment of acute stroke, before a distinction can be made between ischemic and hemorrhagic types, is challenging. Whether very early blood-pressure control in the ambulance improves outcomes among patients with undifferentiated acute stroke is uncertain. METHODS: We randomly assigned patients with suspected acute stroke that caused a motor deficit and with elevated systolic blood pressure (≥150 mm Hg), who were assessed in the ambulance within 2 hours after the onset of symptoms, to receive immediate treatment to lower the systolic blood pressure (target range, 130 to 140 mm Hg) (intervention group) or usual blood-pressure management (usual-care group). The primary efficacy outcome was functional status as assessed by the score on the modified Rankin scale (range, 0 [no symptoms] to 6 [death]) at 90 days after randomization. The primary safety outcome was any serious adverse event. RESULTS: A total of 2404 patients (mean age, 70 years) in China underwent randomization and provided consent for the trial: 1205 in the intervention group and 1199 in the usual-care group. The median time between symptom onset and randomization was 61 minutes (interquartile range, 41 to 93), and the mean blood pressure at randomization was 178/98 mm Hg. Stroke was subsequently confirmed by imaging in 2240 patients, of whom 1041 (46.5%) had a hemorrhagic stroke. At the time of patients' arrival at the hospital, the mean systolic blood pressure in the intervention group was 159 mm Hg, as compared with 170 mm Hg in the usual-care group. Overall, there was no difference in functional outcome between the two groups (common odds ratio, 1.00; 95% confidence interval [CI], 0.87 to 1.15), and the incidence of serious adverse events was similar in the two groups. Prehospital reduction of blood pressure was associated with a decrease in the odds of a poor functional outcome among patients with hemorrhagic stroke (common odds ratio, 0.75; 95% CI, 0.60 to 0.92) but an increase among patients with cerebral ischemia (common odds ratio, 1.30; 95% CI, 1.06 to 1.60). CONCLUSIONS: In this trial, prehospital blood-pressure reduction did not improve functional outcomes in a cohort of patients with undifferentiated acute stroke, of whom 46.5% subsequently received a diagnosis of hemorrhagic stroke. (Funded by the National Health and Medical Research Council of Australia and others; INTERACT4 ClinicalTrials.gov number, NCT03790800; Chinese Trial Registry number, ChiCTR1900020534.).


Ambulances , Blood Pressure , Hypertension , Stroke , Humans , Male , Female , Aged , Middle Aged , Stroke/therapy , Hypertension/complications , Antihypertensive Agents/therapeutic use , Emergency Medical Services , Time-to-Treatment , Aged, 80 and over , Ischemic Stroke/therapy
12.
J Emerg Med ; 66(5): e571-e580, 2024 May.
Article En | MEDLINE | ID: mdl-38693006

BACKGROUND: Emergency patients are frequently assigned nonspecific diagnoses. Nonspecific diagnoses describe observations or symptoms and are found in chapters R and Z of the International Classification of Diseases, 10th edition (ICD-10). Patients with such diagnoses have relatively low mortality, but due to patient volume, the absolute number of deaths is substantial. However, information on cause of short-term mortality is limited. OBJECTIVES: To investigate whether death could be expected for ambulance patients brought to the emergency department (ED) after a 1-1-2 call, released with a nonspecific ICD-10 diagnosis within 24 h, and who subsequently died within 30 days. METHODS: Retrospective medical record review of adult 1-1-2 emergency ambulance patients brought to an ED in the North Denmark Region during 2017-2021. Patients were divided into three categories: unexpected death, expected death (terminal illness), and miscellaneous. Charlson Comorbidity Index (CCI) was assessed. RESULTS: We included 492 patients. Mortality was distributed as follows: Unexpected death 59.2% (n = 291), expected death (terminal illness) 25.8% (n = 127), and miscellaneous 15.0% (n = 74). Patients who died unexpectedly were old (median age of 82 years) and had CCI 1-2 (58.1%); 43.0% used at least five daily prescription drugs, and they were severely acutely ill upon arrival (24.7% with red triage, 60.1% died within 24 h). CONCLUSIONS: More than half of ambulance patients released within 24 h from the ED with nonspecific diagnoses, and who subsequently died within 30 days, died unexpectedly. One-fourth died from a pre-existing terminal illness. Patients dying unexpectedly were old, treated with polypharmacy, and often life-threateningly sick at arrival.


Ambulances , Emergency Service, Hospital , Humans , Female , Retrospective Studies , Male , Aged , Ambulances/statistics & numerical data , Aged, 80 and over , Emergency Service, Hospital/statistics & numerical data , Emergency Service, Hospital/organization & administration , Denmark/epidemiology , Middle Aged , Adult , Cause of Death/trends , International Classification of Diseases
14.
Emergencias ; 36(2): 88-96, 2024 Apr.
Article Es, En | MEDLINE | ID: mdl-38607301

OBJECTIVES: To develop and validate a risk model for 1-year mortality based on variables available from early prehospital emergency attendance of patients with infection. MATERIAL AND METHODS: Prospective, observational, noninterventional multicenter study in adults with suspected infection transferred to 4 Spanish hospitals by advanced life-support ambulances from June 1, 2020, through June 30, 2022. We collected demographic, physiological, clinical, and analytical data. Cox regression analysis was used to develop and validate a risk model for 1-year mortality. RESULTS: Four hundred ten patients were enrolled (development cohort, 287; validation cohort, 123). Cumulative mortality was 49% overall. Sepsis (infection plus a Sepsis-related Organ Failure Assessment score of 2 or higher) was diagnosed in 29.2% of survivors vs 56.7% of nonsurvivors. The risk model achieved an area under the receiver operating characteristic curve of 0.89 for 1-year mortality. The following predictors were included in the model: age; institutionalization; age-adjusted Charlson comorbidity index; PaCO2; potassium, lactate, urea nitrogen, and creatinine levels; fraction of inspired oxygen; and diagnosed sepsis. CONCLUSION: The model showed excellent ability to predict 1-year mortality based on epidemiological, analytical, and clinical variables, identifying patients at high risk of death soon after their first contact with the health care system.


OBJETIVO: Diseñar y validar un modelo de riesgo con variables determinadas a nivel prehospitalario para predecir el riesgo de mortalidad a largo plazo (1 año) en pacientes con infección. METODO: Estudio multicéntrico, observacional prospectivo, sin intervención, en pacientes adultos con sospecha infección atendidos por unidades de soporte vital avanzado y trasladados a 4 hospitales españoles entre el 1 de junio de 2020 y el 30 de junio de 2022. Se recogieron variables demográficas, fisiológicas, clínicas y analíticas. Se construyó y validó un modelo de riesgo para la mortalidad a un año usando una regresión de Cox. RESULTADOS: Se incluyeron 410 pacientes, con una tasa de mortalidad acumulada al año del 49%. La tasa de diagnóstico de sepsis (infección e incremento sobre el SOFA basal $ 2 puntos) fue del 29,2% en supervivientes frente a un 56,7% en no supervivientes. El modelo predictivo obtuvo un área bajo la curva de la característica operativa del receptor para la mortalidad a un año fue de 0,89, e incluyó: edad, institucionalización, índice de comorbilidad de Charlson ajustado por edad, presión parcial de dióxido de carbono, potasio, lactato, nitrógeno ureico en sangre, creatinina, saturación en relación con fracción inspirada de oxígeno y diagnóstico de sepsis. CONCLUSIONES: El modelo desarrollado con variables epidemiológicas, analíticas y clínicas mostró una excelente capacidad predictiva, y permitió identificar desde el primer contacto del paciente con el sistema sanitario, a modo de evento centinela, casos de alto riesgo.


Emergency Medical Services , Sepsis , Adult , Humans , Prospective Studies , Ambulances , Lactic Acid , Sepsis/diagnosis
15.
PLoS One ; 19(4): e0301637, 2024.
Article En | MEDLINE | ID: mdl-38635594

Globally, traffic accidents on the highway network contribute significantly to a high fatality rate, drawing considerable attention from health institutions. The efficiency of transportation plays a vital role in mitigating the severe consequences of these incidents. This study delves into the issues of emergency vehicles experiencing delays despite having priority. Therefore, we construct mixed-integer linear programming with semi-soft time windows (MIPSSTW) model for optimizing emergency vehicle routing in highway incidents. We analyze the time-varying and complex traffic situations and respectively propose corresponding estimation approaches for the travel time of road segments, intersections on the urban road network, and ramp-weave sections on the highway network. Furthermore, we developed a modified cuckoo search(MCS) algorithm to solve this combinatorial problem. Optimization strategies of Lévy flight and dynamic inertial weight strategy are introduced to strengthen the exploration capability and the diversity of solution space of the CS algorithm. Computational experiments based on the Chinese emergency medical system data are designed to validate the efficacy and effectiveness of the MIPSSTW model and MCS algorithm. The results show that our works succeed in searching for high-quality solutions for emergency vehicle routing problems and enhance the efficacy of strategic decision-making processes in the realm of incident management and emergency response systems.


Ambulances , Programming, Linear , Accidents, Traffic/prevention & control , Transportation , Travel
16.
Proc Inst Mech Eng H ; 238(5): 508-519, 2024 May.
Article En | MEDLINE | ID: mdl-38562010

Emergency ambulances play a vital role in medical rescue and patient transportation, but their transit can impact patient health due to vehicle dynamic forces and vibrations. This study evaluates patient transport conditions on a stretcher subjected to vertical vibration excitation from road unevenness. Using an eight-degree-of-freedom numerical model, we analyze the construction parameters of a medical stretcher's support and vehicle suspension. Actual experimental data from an emergency vehicle were utilized to assess the vibration conditions experienced by both the stretcher and the ambulance floor. The model is adjusted based on measurements, specifically targeting the main vibration modes. The investigation involves determining temporal responses for vertical accelerations and characterizing vibration modal parameters under various transportation conditions. Notably, several system natural frequencies fall within the range of human body frequencies, making them susceptible to mechanical excitation, particularly in the human neck, abdomen, and spine. A sensitivity analysis underscores the influence of medical stretcher support structure parameters on patient comfort. Increasing support stiffness, which alters the stretcher's natural frequency, and damping coefficient reduce vibration propagation between the vehicle and the patient. Additionally, the research predicts the model's dynamic behavior on roads with low-quality pavement, indicating vibrational amplitudes that could potentially be discomforting and unhealthy for individuals. The study illustrates a vibration exposure period on a class E road, revealing that transportation longer than 25 min may cause damage to patient health.


Ambulances , Vibration , Humans , Transportation of Patients , Stretchers , Models, Theoretical
17.
Int J Occup Saf Ergon ; 30(2): 651-661, 2024 Jun.
Article En | MEDLINE | ID: mdl-38632949

Objectives. This study aimed to describe work-, lifestyle-, and health-related factors among ambulance personnel, and to analyse differences between women and men. Methods. The cross-sectional study (N = 106) included self-reported and objective measures of work, lifestyle, and health in 10 Swedish ambulance stations. The data collection comprised clinical health examination, blood samples, tests of physical capacity, and questionnaires. Results. A high proportion of the ambulance personnel reported heavy lifting, risk of accidents, threats and violence at work. A low level of smoking and alcohol use, and a high level of leisure-time physical activity were reported. The ambulance personnel had, on average, good self-rated health, high work ability and high physical capacity. However, the results also showed high proportions with risk factors for cardiovascular disease (CVD), e.g., high blood pressure, and high levels of blood lipids. More women than men reported high work demands. Furthermore, women performed better in tests of physical capacity and had a lower level of CVD risk factors. Conclusions. Exposure to work-related factors that might affect health was common among ambulance personnel. Lifestyle- and health-related factors were somewhat contradictory, with a low proportion reporting lifestyle-related risk factors, but a high proportion having risk factors for CVD.


Life Style , Humans , Female , Male , Adult , Cross-Sectional Studies , Sweden/epidemiology , Middle Aged , Risk Factors , Sex Factors , Ambulances/statistics & numerical data , Health Status , Surveys and Questionnaires , Emergency Medical Services/statistics & numerical data , Cardiovascular Diseases/epidemiology , Occupational Health , Emergency Medical Technicians/statistics & numerical data , Workload
18.
Seizure ; 118: 17-27, 2024 May.
Article En | MEDLINE | ID: mdl-38613878

INTRODUCTION: Adults presenting to the ambulance service for diagnosed epilepsy are often transported to emergency departments (EDs) despite no clinical need. An alternative care pathway (CP) could allow paramedics to divert them from ED and instigate ambulatory care improvements. To identify the most promising CP configuration for subsequent testing, the COLLABORATE project surveyed people with epilepsy and family/friends who had recently used the English ambulance service to elicit preferences for 288 CP configurations for different seizures. This allowed CPs to be ranked according to alignment with service users' preferences. However, as well as being acceptable to users, a CP must be feasible. We thus engaged with paramedics, epilepsy specialists and commissioners to identify the optimal configuration. METHODS: Three Knowledge Exchange workshops completed. Participants considered COLLABORATE's evidence on service users' preferences for the different configurations. Nominal group techniques elicited views on the feasibility of users' preferences according to APEASE criteria. Workshop groups specified the configuration/s considered optimum. Qualitative data was analysed thematically. Utility to users of the specified CP configurations estimated using the COLLABORATE preference survey data. RESULTS: Twenty-seven participants found service users' preferences broadly feasible and outlined delivery recommendations. They identified enough commonality in preferences for different seizures to propose a single CP. Its configuration comprised: 1) patients staying where they were; 2) paramedics having access to medical records; 3) care episodes lasting <6 h; 4) paramedics receiving specialist advice on the day; 5) patient's GP being notified; and 6) a follow-up appointment being arranged with an epilepsy specialist. Preference data indicated higher utility for this configuration compared to current care. DISCUSSION: Stakeholders are of the view that the CP configuration favoured by service users could be NHS feasible. It should be developed and evaluated.


Ambulances , Epilepsy , Feasibility Studies , Patient Preference , Humans , Adult , Epilepsy/therapy , Female , Male , Emergency Medical Services , Middle Aged , Ambulatory Care , Emergency Service, Hospital
19.
Seizure ; 118: 28-37, 2024 May.
Article En | MEDLINE | ID: mdl-38615478

INTRODUCTION: To identify service users' preferences for an alternative care pathway for adults with epilepsy presenting to the ambulance service. METHODS: Extensive formative work (qualitative, survey and knowledge exchange) informed the design of a stated preference discrete choice experiment (DCE). This hypothetical survey was hosted online and consisted of 12 binary choices of alternative care pathways described in terms of: the paramedic's access to medical records/ 'care plan', what happens next (described in terms of conveyance), time, availability of epilepsy specialists today, general practitioner (GP) notification and future contact with epilepsy specialists. DCE scenarios were described as: (i) typical seizure at home. (ii) typical seizure in public, (iii) atypical seizure. Respondents were recruited by a regional English ambulance service and by national public adverts. Participants were randomised to complete 2 of the 3 DCEs. RESULTS: People with epilepsy (PWE; n = 427) and friends/family (n = 167) who completed the survey were representative of the target population. PWE preferred paramedics to have access to medical records, non-conveyance, to avoid lengthy episodes of care, availability of epilepsy specialists today, GP notification, and contact with epilepsy specialists within 2-3 weeks. Significant others (close family members or friends) preferred PWE experiencing an atypical seizure to be conveyed to an Urgent Treatment Centre and preferred shorter times. Optimal configuration of services from service users' perspective far out ranked current practice (rank 230/288 possible configurations). DISCUSSION: Preferences differ to current practice but have minimal variation by seizure type or stakeholder. Further work on feasibility of these pathways in England, and potentially beyond, is required.


Ambulances , Emergency Medical Services , Epilepsy , Humans , Adult , Male , Female , Middle Aged , Epilepsy/therapy , Young Adult , Patient Preference/statistics & numerical data , Choice Behavior/physiology , Adolescent , Aged , Surveys and Questionnaires , Critical Pathways
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