Paramedic PapersHome Topics Operations & systems
Topic
Operations & systems research
94 recent papers on operations & systems in paramedic and prehospital care, newest first. Each has a plain-English summary, the study design, the main finding and caveat, and what it means for Australian practice.
-
What drives lay community first responders in Denmark
An interpretive phenomenological study of ten Danish lay community first responders — part of a 60,000-volunteer national system, about 70% without healthcare backgrounds — identified four themes: a sense of duty, acting under uncertainty as a civilian-turned-responder, navigating relational roles with crews, and carrying personal identity into crisis.
-
Tele-paramedics matched physicians in MCI drill
In a German mass-casualty simulation, tele-consult support delivered by experienced paramedics performed similarly to tele-physician support and on-site physician care on indicated treatments addressed (51% vs 56-57%) and analgesia provision (~60%), both far ahead of EMT-only care (8% and 7%).
-
Longer on-scene intervals linked to 24-hour mortality
A Thai retrospective cohort of Code Red ALS activations found on-scene intervals of 21-25 minutes were associated with higher odds of 24-hour mortality compared with 5 minutes or less (adjusted OR 5.61), and intervals of 20 minutes or longer came with 321.7 fewer expected survival minutes.
-
What patients think of alternative response units
A scoping review of patient, family and carer experiences of alternative ambulance response units found that people value receiving competent care at home, avoiding hospital transport, and referral pathways with continuity of care beyond the initial episode.
-
How ambulance models shape end-of-life care
Case studies of three English ambulance services found paramedics deliver end-of-life care with learning on the job and patchy access to patient records, anticipatory medicines and palliative advice, with more innovative models (advanced-paramedic anticipatory medicines, an in-service palliative team and palliative care ambulances) improving resources.
-
Paramedics on digital decision support
Qualitative interview study of 12 Norwegian paramedics on digital health tools for prehospital non-emergency decision-making — four themes emerged around call assessment and resource allocation, shared situational awareness, interprofessional communication, and the challenges of patchy implementation.
-
Hot days drive dizziness call-outs
Population-based study of 270,120 emergency transports in Kochi, Japan linking weather to dizziness-related ambulance call-outs — hotter days and short-term temperature spikes raised the odds of high-volume dizziness days, peaking in summer.
-
OHCA registry clock times run short
Linking 56,969 Swedish OHCA registry records to dispatch-centre data showed unit response times matched almost exactly, but registry-recorded total response times ran a median 81 seconds shorter than the dispatch clock.
-
What makes a HEMS nurse: Spanish views
A qualitative Spanish study of 17 HEMS professionals found flight nursing was seen as a highly specialised profile requiring critical-care experience, advanced technical skills, aviation safety training and structured in-person education — with no formalised national training pathway.
-
Drone AI for mass-casualty triage
A research team built and pilot-tested a drone-integrated AI system that measures heart rate, respiratory rate, oxygen saturation and temperature from drone-captured video and thermal imaging, assigns triage categories, and streams casualty data to dispatch — feasible under controlled indoor conditions.
-
Australian alcohol harms keep rising
An Australian synthesis of national data from 2010 to 2023 found survey and wastewater measures of alcohol consumption generally declined while most alcohol-related harms — including ambulance attendances — increased substantially, questioning the validity of population surveys.
-
Ditch lights and sirens for fall-alarm calls
Before-after study switching medical-alert (PERS) activations to non-lights-and-siren dispatch — L&S response fell from 98% to 12% of calls and response-phase L&S hours dropped 86%, with only 0.2% of calls later needing an upgrade to L&S transport.
-
Why patients decline hypoglycaemia call-back programs
Qualitative interviews with adults who declined a community paramedicine hypoglycaemia-prevention program found they normalised severe episodes within their own management routines — time constraints (56%), perceived lack of benefit (25%) and privacy concerns about home visits (25%) kept them out.
-
Ambulance demand peaks at 9pm
A two-year Turkish analysis of 60,811 EMS case records found demand peaked at 21:00 at 3.53 times the 06:00 trough, with circadian rhythmicity in all seven clinical groups and workable short-term demand forecasts.
-
Most physician-unit dispatches are overtriage
A retrospective Austrian analysis of 3,454 dispatches of a physician-staffed response vehicle found 76% met retrospective overtriage criteria, and dispatch priority didn't predict appropriateness at all.
-
Emergency care gaps in mountain populations
Scoping review of 23 sources mapped the barriers to emergency care for transient populations in mountains — terrain, weather, communications and thin EMS capacity — with HEMS and on-site clinics the most cited facilitators.
-
One in five transports: brief stay, no intervention
Danish population-based cohort of 89,560 emergency calls found 19.1% of transported patients had a hospital stay of six hours or less with no documented in-hospital intervention, with short-term mortality of just 0.4% in that group.
-
Nurse teleassistance and AI in prehospital triage
Scoping review (5 eligible studies from 1,214 records) of nurse-led teleassistance and AI in prehospital triage found video teleassistance was associated with fewer inappropriate ED transfers, while AI-supported triage evidence remains thin.
-
Mass-gathering EMS and hospital surge planning
Structured narrative review of EMS and hospital surge integration for mass gatherings found median presentation rates around 6.2 per 1,000 attendees and transport rates of 0.35 per 1,000, but hospital effects too heterogeneous for firm conclusions.
-
Community paramedic referrals cut ambulance use
Chicago fire-department community paramedics running a 4-visit referral program from primary care medical homes across hypertension, diabetes, asthma/COPD and heart failure pathways — 68 graduates saw 911 ambulance transports down 43%, ED visits down 46% and admissions down 42% at six months.
-
Who calls an ambulance for low-acuity problems
Retrospective study of 41,761 low-acuity ED visits in the southeastern US found only 7.7% arrived by ambulance, with the highest odds among retired or disabled (aOR 3.60) and unemployed (aOR 2.26) patients and the lowest among those with an established GP (aOR 0.57).
-
Lactate drives prehospital mSOFA risk
Prospective Spanish multicentre study of 12,212 high-priority patients deconstructed the prehospital mSOFA score with a decision tree, finding lactate ≥3.8 mmol/L was the primary discriminator for 2-day in-hospital mortality, ahead of SaFi, GCS and creatinine.
-
Bedside observations beat NEWS for spotting deterioration
Retrospective analysis of 4,581 rapid response team callouts testing whether eight equipment-free bedside observations identify dying patients better than NEWS — a model built from them outperformed NEWS for predicting death within 24 hours (AUC 0.790 vs 0.707).
-
Redirecting non-urgent patients to primary care looks safe
A scoping review of nine studies found redirecting non-urgent ED patients to primary care appeared safe — 9.7% return rate, 1.7% hospitalisation and 0.07% mortality — with triage, vital signs and documentation the commonest safeguards.
-
Priority transport in multi-patient crashes: sicker, not harmed
Across 143,130 patients in Japanese traffic multi-patient incidents, priority (first-out) transport carried a 2.2-point adjusted risk difference for death or severe injury that peaked at 6.4 points with short scene times — a severity-selection signature rather than evidence of harm from early transport.
-
On-site CT slashes event transports
Retrospective before–after study at the Munich Oktoberfest found an on-site mobile CT led to 429 of 498 imaged patients (86%) being treated and discharged on-site, avoiding an estimated 22,737 minutes of EMS deployment time.
-
EMS dashboards: thin crisis evidence
Scoping review of 26 studies found EMS performance dashboards are used almost exclusively for routine operations — only one study addressed crisis conditions and it used no dashboard.
-
AI telephone triage protocol for EMS calls
Protocol for the trIAje project, a Spanish retrospective cohort linking 2020–2024 dispatch records, ePCRs and health-registry data to evaluate and then improve AI-assisted telephone triage of time-sensitive conditions using NLP on dispatcher call text.
-
Patients report prehospital safety incidents
Structured telephone interviews 15–20 days after EMS transport across eight Spanish provincial services characterised patient safety incidents reported by patients and witnesses, covering near misses and no-harm events as well as harm.
-
Bigger crews work faster, don't save more
Korean nationwide cohort of 78,203 severe trauma patients found crews of three or more achieved better prehospital IV access (aOR 1.47) and scene times ≤10 minutes (aOR 1.09) than two-person crews, with no survival difference after adjustment.
-
Risk-score-guided conveyance safe in chest pain
A Dutch pragmatic RCT testing whether a prehospital risk score could guide ambulance conveyance in 5170 adults with undifferentiated chest pain — it was non-inferior to usual care for 3-day serious adverse events while increasing non-conveyance, cutting 30-day ED presentations and lowering costs.
-
What paramedics want from voice-to-text ePCRs
A mixed-methods survey of 323 Canadian paramedics plus 14 interviews identified and ranked the features paramedics want in speech-recognition documentation — 86% viewed it positively, with accuracy, patient interaction and compliance rated most important.
-
Co-design of urine culture stewardship in ED
Qualitative co-design study at Townsville ED (7 workshops, 35 emergency physicians) building a theory-informed intervention against low-value urine cultures — culture, complexity and efficiency drove over-ordering, with education, nudges, clinical champions and audit/feedback chosen as the fix.
-
GPS beats app taps for measuring responder arrival
An observational study of 1,498 smartphone first-responder alerts in Germany found GPS geofence entry (50 m) gave more reliable and earlier arrival times (median 4 min 40 s) than manual app confirmation (median 5 min 50 s, often delayed or missing).
-
Checklists may speed time-critical transfers
A UK HEMS service evaluation found introducing referring-hospital and transport-team checklists for time-critical interhospital helicopter transfers improved achievement of a sub-45-minute turnaround KPI from 52% to 64%, though not significantly.
-
Ambulance central to alcohol and self-harm pathways
A Scottish national cross-sectional study of 2.7 million unscheduled care pathways found 2.7% involved alcohol, drugs or self-harm, with the commonest journey being ambulance to ED to admission at a direct NHS cost of about £216.9 million.
-
Governance gaps cripple Ethiopian prehospital care
Qualitative needs assessment using the WHO prehospital assessment tool across 15 interviews with EMS and health bureau leaders in Hawassa, Ethiopia identified six recurring barriers — infrastructure, medicines/equipment, communication, community perceptions, workforce and, cutting across all of them, unclear governance and accountability — leaving services functioning as interfacility transport rather than true prehospital care.
-
US border counties: more trauma, more delays
Comparison of 421,877 EMS encounters in US border versus matched non-border counties — border areas carried more severe trauma and environmental exposures (25.5% vs 8.2%) alongside larger response and scene delays
-
IMPACC paramedic model cuts ED transport
Evaluation of 7,382 encounters under Toronto's IMPACC model, which lets specially trained paramedics redirect lower-acuity 911 callers — activated encounters had transport rates of 36% vs 82% for others (still 43% vs 79% after matching) but added roughly 24 minutes on scene, with 4% re-contact at 72 hours
-
Hot debrief tool in metropolitan EDs
Multi-site Australian quality improvement study of a structured hot debrief tool after critical events (46 debriefs across two metropolitan EDs) found 98% of attendees rated it psychologically safe and 59 of 60 found it useful, with themes surfacing system issues like medication dosing in rare events and staff safety during behavioural emergencies.
-
AI voice assistants in EMS: survey
Multinational survey of 401 EMS clinicians in Germany, Norway and Switzerland exploring how AI-based voice assistance systems could be designed for prehospital care — respondents were technically proficient and already using digital tools mainly for documentation, knowledge access, hospital pre-notification and occupancy checks, with the study mapping requirements, expectations and implementation obstacles rather than testing clinical outcomes.
-
Embedded low-acuity pathway improves rural ED performance
Quasi-experimental study of an embedded ultra-low acuity pathway at Dubbo Base Hospital (n=4,798) — pathway availability halved did-not-wait rates (14.2%→6.9%), lifted seen-on-time and treatment performance, and cut mean ED length of stay by 51.7 minutes.
-
2026 review of prehospital guideline quality
The 2026 update of the systematic review appraising evidence-based guidelines for prehospital care — abstract not yet available (ahead-of-print), but this recurring review is the reference map of what guideline-level evidence exists in prehospital practice.
-
ED volume not linked to mortality
Cohort of 724,256 ED presentations across Dutch and Danish hospitals — annual ED volume had no association with in-hospital mortality, while mortality was lower on busier days, driven by excess deaths on quiet ones.
-
Ramping driven by hospital 'back door'
A mixed-methods Queensland study of six years of ambulance and hospital records found access block is largely a hospital discharge ('back door') problem, with recommendations spanning discharge metrics, primary care support and prehospital flow.
-
AI predicts ED admitting team from triage notes
Sydney single-centre deep learning study of 40,054 admitted ED patients — a fine-tuned clinical language model predicted the inpatient admitting specialty from triage notes with AUROC 0.97, though precision was a moderate 0.71.
-
ED ultrasound archiving works in Australia
Four-year implementation study of a middleware ED ultrasound archiving and QA workflow at Nepean Hospital — 7,281 studies archived across 15 modalities with zero data loss or failures, automated trainee logbooks saving each trainee ~2 h/week, and clinician time (not software) the dominant recurring cost.
-
Japanese mobile EMS app rollout data
Population-based descriptive study of a Japanese mobile EMS app capturing 147,213 transport cases over 15 months — 90% were emergency transports, OCR used in 74% of cases, hospital acceptance on first request in 66% with median 5.2 min negotiation time
-
Public accepts drone-delivered AEDs
Cross-sectional survey of 586 Louisiana adults on drone-assisted emergency response — high acceptance (mean 4.1/5), trust (3.8), and self-efficacy (4.0), with telecommunicator guidance significantly increasing self-efficacy for both family and stranger scenarios
-
Paramedics working in UK general practice
Survey of 37 paramedics employed in Cornwall general practices — all saw urgent patients in clinic or at home, 38% were non-medical prescribers, and 13 different job titles were in use, highlighting unclear employment and training models.
-
What makes paramedic teleconsultation work
Qualitative study of 12 UK critical care and clinical advisory paramedics on teleconsultation — its effectiveness hinges on a 'teleconsultation competence gap' in training, organisational culture and whether governance feels punitive rather than supportive.
-
Indirect ICU admissions from Australian ED
Australian observational study found indirect ICU admissions (ED admission to non-critical care ward requiring ICU transfer within 24 hours) accounted for 11.3% of ED-to-ICU admissions, with circulatory insufficiency as the most common reason and hospital mortality of 12.8%.
-
Campus EMS naloxone and harm reduction survey
National survey examined harm reduction programs in collegiate-based EMS agencies, assessing naloxone distribution, overdose response, and substance use support services.
-
Few quality indicators for prehospital post-ROSC care
Scoping review identified 16 potential quality indicators for prehospital post-ROSC care across five domains, highlighting a major evidence gap since only two existing studies listed formal indicators.
-
Defining diagnostic excellence in the ED
Consensus study using a modified RAND/UCLA panel method to define diagnostic excellence and missed diagnostic opportunity in emergency departments — diagnostic excellence is accurate, timely, evidence-based, and patient-centered communication of a diagnosis based on available information, while a missed diagnostic opportunity is a measurable divergence from optimal practice that may lead to inaccurate/delayed explanations or communication failures.
-
Who makes non-urgent ED visits
Systematic review of 32 studies across 21 countries identified factors associated with non-urgent ED utilisation, with frequent prior ED visits (aOR up to 82) and patient perception of non-serious illness (aOR up to 21) being the strongest predictors
-
Online medical direction mostly for refusals
Retrospective analysis of 9,944 online medical direction consultations from 2016-2024 found OLMD is primarily used for patient refusals (65%) with 97% physician approval, and overall ~93% agreement between paramedic requests and physician decisions
-
Independent EMS beats hospital-based model in Chinese OHCA
Retrospective analysis of 24,814 OHCA patients comparing independent EMS models with hospital-based models in China — the independent model had higher survived event rates (2.23% vs 1.40%) despite longer response times.
-
NEMSIS records mostly unique encounters
Retrospective analysis of 36.7 million NEMSIS records — 99.5% represent unique patient-care episodes with only 0.5% involving multiple records for the same encounter
-
AI triage tool predicts ED admission
Model explainability analysis of START-AI — AUROC improved from 0.78 to 0.90 with AI features, driven primarily by blood test results, triage comments, and clinical notes
-
Team leaders carry highest cognitive load
This multicentre cross-sectional study of 58 resuscitations found perceived cognitive load was highest among team leaders (mean 5.5/9) and higher team leader cognitive load was associated with higher load among team members and lower TEAM-assessed performance.
-
Rural vs urban EMS: 2024 NEMSIS update
Survey examining EMS characteristics and care differences between rural and urban areas — reports on resource availability, response times, and clinical capabilities.
-
Optimising ambulance locations in rural Spain
Mathematical optimisation study applying meta-heuristic algorithms to ambulance station location problems in rural Spain, focusing on maximising population coverage within distance constraints.
-
Keep infection control for POCUS procedures
Commentary reinforcing that infection control standards must be maintained for all percutaneous procedures including those perceived as routine like POCUS-guided cannulation, following widespread adoption of point-of-care ultrasound.
-
AI dispatcher copilot concept for Tele-CPR
Concept paper proposes an AI dispatcher copilot using multimodal large language models for dynamic Tele-CPR, integrating acoustic agonal breathing detection, adaptive instruction generation, real-time video CPR coaching with compression feedback, and automated first responder and AED coordination.
-
Perceived prehospital delays in trauma mass casualty incidents
Mass casualty incidents (MCIs) place substantial demands on pre-hospital systems.
-
Simulation optimisation for MCI ambulance dispatch
Study on: Simulation-based dynamic optimization for ambulance dispatch and casualty distribution in mass casualty incident. No abstract available for detailed assessment.
-
Outcome-informed EMS response planning review
Study on: Outcome-informed Emergency Medical Services Response Planning: A Systematic Review. No abstract available for detailed assessment.
-
Case management for high ambulance users ineffective
Study on: Effectiveness of Multidisciplinary “Case Management” Approaches to the Management of Patients Who Make High Use of the Emergency Ambulance Service: A Quasi-experimental Evaluation Using Linked Routine. No abstract available for detailed assessment.
-
Cross-border EMS response to fatal train crash
This report describes the response to a major incident, characterized by effective inter-authority cooperation and successful cross-border collaboration between Danish and German emergency services.
-
Managing ED care during civil unrest
Emergency clinicians should be familiar with the distinct injury profiles associated with crowd-control weapons and be prepared to manage them within the emergency care setting.
-
12-year trends in prehospital demand and acuity
Emergency medical services (EMS) are one of the main interfaces between acutely ill patients in the prehospital environment and hospital-based care.
-
Decision support for ED imaging referrals
Successful implementation of eCDS requires more than technological deployment.
-
Smart glasses for EMS–physician communication
Smart glasses have the potential to enhance EMS-OLMC communication and improve completion of physician-guided critical tasks, though these benefits come with longer interactions.
-
US heat-related EMS encounters rising regionally
While national odds and proportions of heat-related prehospital encounters have risen slightly in 2023 compared to 2019, certain geographic regions have experienced far greater increases.
-
Nearest-hospital transport policy affects ED metrics
EMS destination policies can affect ED care delivery metrics.
-
AI history-taking in paediatric ED feasible
This pilot study of ChatGPT-enabled patient history taking in the pediatric emergency department waiting room was feasible, well accepted, and produced accurate, complete, readable, and efficient summaries.
-
LLMs identify paediatric asthma in EMS data
They tested whether large language models could accurately identify paediatric asthma exacerbations from EMS documentation, finding high performance but noting this is early exploratory work with real-world deployment challenges.
-
Documenting social risk factors in EMS charts
This pilot implementation tested whether EMS clinicians can reliably identify and document patient social risk factors during routine care, finding that structured documentation is feasible but requires workflow integration and clinician training.
-
Electric ambulances feasible in most dispatches
Retrospective NEMSIS analysis examined operational feasibility of electric ambulance adoption — fleet integration appears viable under specific conditions, though infrastructure readiness remains key.
-
Tatra mountain rescue epidemiology over 10 years
Retrospective analysis of 9,477 mountain rescue missions over 10 years found a median NACA score of 2 with 38% classified as moderate-to-severe, seasonal variation in severity, and helicopter use correlated with higher acuity, providing epidemiological data that could inform training and resource planning for wilderness EMS.
-
Modelling air vs ground EMS in Alberta
Geospatial analysis comparing response and transport times for air versus ground EMS in Alberta to identify optimal triage criteria.
-
Digital MCI coordination didn't speed evacuation
Retrospective evaluation of whether the IVENA-MANV digital coordination system improved prehospital distribution times during mass casualty incidents.
-
Field acuity predicts ICU admission in stable adults
Prospective study of 393 patients transported by ambulance found urgent field classification, hypotension, critical hyperglycemia, and prehospital interventions predicted ICU admission.
-
Medical planning for 2024 Republican convention
This case report describes comprehensive health and medical planning and multi-agency response for a large-scale national political convention, providing a template for mass gathering EMS preparedness.
-
Critical care attendance driven by distance, not deprivation
This spatial analysis examined how deprivation levels and prehospital critical care service configuration affect cardiac arrest outcomes, revealing persistent geographic disparities in access and survival.
-
Protocol-grounded LLM gave 75% accurate advice
This study tested whether a large language model trained on agency-specific prehospital protocol documents could generate accurate care recommendations — they found promising accuracy for protocol interpretation and clinical decision support, suggesting potential for LLMs to assist with guideline navigation at the point of care.
-
Paramedic treat-and-discharge rarely used but efficient
This retrospective cohort study analysed paramedic treat and discharge medical directives to understand utilisation patterns and key metrics for prehospital and emergency department decision-making — the findings provide valuable insights into the scope, safety, and operational impact of treat-and-refer pathways.
-
Eye emergency calls often chemical or stroke
Register-based cohort of 340 eye-related emergency calls found chemical exposures (31.5%), vision loss (25.9%), and trauma (18.2%) as leading causes, with 11.5% of patients initially coded for eye problems later diagnosed with stroke.
-
Tactical police medics trained but underused
Interview study exploring how Swedish tactical police medics view their training, role, and real-world practice — they reported being well trained but underused, with scope restrictions and inconsistent collaboration limiting what they can actually do.
-
Lights and sirens save only ~3 minutes
This study used a modern transport model to estimate whether lights and sirens save time, and it found a median gain of only 3.0 to 3.3 minutes per trip, which likely does not justify the known driving risks except in selected cases.
-
Portable telemedicine devices compared for triage
Simulation study comparing portable telemedicine devices for ambulance triage, and found the Vuzix headset ranked highest overall, but the smartphone app was the most practical early implementation option.
-
Virtual triage model feasible for ambulance patients
They tested a pre-hospital telehealth model for ambulance-retrieved patients, and found it was feasible, advanced senior review, and reduced ED length of stay without improving crew cycle times.
-
Lights and sirens cut critical care transfer times
They measured whether lights and sirens meaningfully shorten critical care transport, and found a statistically significant but modest time saving of about 8 minutes.