Observational studyScandinavian journal of trauma, resuscitation and emergency medicine2023
Factors influencing on-scene time in a physician-staffed helicopter emergency medical service (HEMS): a retrospective observational study.
Observational study in Scandinavian journal of trauma, resuscitation and emergency medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Physician-staffed HEMS: triage accuracy beyond diagnostic agreement in paediatric trauma.Scandinavian journal of trauma, resuscitation and emergency medicine · 2026Article
- Does a physician's base specialty influence on‑scene efficiency? A four‑year analysis of 11,315 missions from five Austrian physician‑staffed HEMS bases.BMC emergency medicine · 2026Article
- Identifying patients transported by helicopter emergency medical services using the International Classification of Diseases (ICD)-11: a scoping review.BMC emergency medicine · 2025Article
- High-altitude HEMS missions-a retrospective analysis of 3,564 air rescue missions conducted between 2011 and 2021.Scandinavian journal of trauma, resuscitation and emergency medicine · 2025Article
- Age-specific considerations in aetiology of paediatric out-of-hospital cardiac arrest.Scandinavian journal of trauma, resuscitation and emergency medicine · 2025Article
- Helicopter emergency medical services in Eastern Iran: a 4-year cross-sectional study of time intervals and mission profiles.BMC emergency medicine · 2025Article
- Favourable neurological outcome following paediatric out-of-hospital cardiac arrest: authors' reply.Scandinavian journal of trauma, resuscitation and emergency medicine · 2024Article
- Favourable neurological outcome following paediatric out-of-hospital cardiac arrest: a retrospective observational study.Scandinavian journal of trauma, resuscitation and emergency medicine · 2023Observational
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundFor helicopter emergency service systems (HEMS), the prehospital time consists of response time, on-scene time and transport time. Little is known about the factors that influence on-scene time or about differences between adult and paediatric missions in a physician-staffed HEMS.
methodsWe analysed the HEMS electronic database of Swiss Air-Rescue from 01-01-2011 to 31-12-2021 (N = 110,331). We included primary missions and excluded missions with National Advisory Committee for Aeronautics score (NACA) score 0 or 7, resulting in 68,333 missions for analysis. The primary endpoint 'on-scene time' was defined as first physical contact with the patient until take-off to the hospital. A multivariable linear regression model was computed to examine the association of diagnosis, type and number of interventions and monitoring, and patient's characteristics with the primary endpoint.
resultsThe prehospital time and on-scene time of the missions studied were, respectively, 50.6 [IQR: 41.0-62.0] minutes and 21.0 [IQR: 15.0-28.6] minutes. Helicopter hoist operations, resuscitation, airway management, critical interventions, remote location, night-time, and paediatric patients were associated with longer on-scene times.
conclusionsCompared to adult patients, the adjusted on-scene time for paediatric patients was longer. Besides the strong impact of a helicopter hoist operation on on-scene time, the dominant factors contributing to on-scene time are the type and number of interventions and monitoring: improving individual interventions or performing them in parallel may offer great potential for reducing on-scene time. However, multiple clinical interventions and monitoring interact and are not single interventions. Compared to the impact of interventions, non-modifiable factors, such as NACA score, type of diagnosis and age, make only a minor contribution to overall on-scene time.
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