Evidence map›Paper›PMID 32868364›Full record

ArticleBMJ open2020

Mortality and hospitalisation in the Danish Helicopter Emergency Medical Service (HEMS) population from 2014 to 2018: a national population-based study of HEMS triage.

Karen Alstrup, Jens Aage Kølsen Petersen, Stephen Sollid, Søren Paaske Johnsen, Leif Rognås

Abstract read
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Observational
  5. Mortality rates in Norwegian HEMS-a retrospective analysis from Central Norway.Scandinavian journal of trauma, resuscitation and emergency medicine · 2024
    Article
  6. Article
  7. Helicopter Ambulance Transport to the Emergency Department: Demographic and Clinical Factors Impacting Outcomes in a Turkish Medical Center.Medical science monitor : international medical journal of experimental and clinical research · 2023
    Article
  8. Observational
  9. Article
  10. Article
  11. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Karen AlstrupDepartment of Research and Development, Pre-hospital Emergency Medical Service, Aarhus N, Denmark karals@rm.dk.ORCID 0000-0002-8151-987X
Jens Aage Kølsen PetersenDepartment of Anaesthesiology, Aarhus University Hospital, Aarhus N, Denmark.
Stephen SollidR&D, Norwegian Air Ambulance Foundation, Drobak, Norway.
Søren Paaske JohnsenDanish Center for Clinical Health Services Research, Department of Clinical Medicine, University of Aalborg, Aalborg, Denmark.
Leif RognåsDepartment of Anaesthesiology, Aarhus University Hospital, Aarhus N, Denmark.ORCID 0000-0002-2542-565X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo describe characteristics and outcomes for patients where the Danish Helicopter Emergency Medical Service (HEMS) either transported the patient to hospital, treated the patient on scene but did not transport the patient or was dispatched but cancelled en route to the patient (aborted mission), and to assess the field triage by comparing these outcomes.

designNational population-based study. SETTING AND

participantsHEMS dispatches are undertaken from the five Danish emergency dispatch medical centres according to national guidelines. The study analysed all primary missions with helicopter take off where the patient was admitted to hospital between 1

main outcome measuresMortality rates, admittance to an intensive care unit (ICU), need of mechanical ventilation and length of hospital stay (LOS).

results6931 patients were admitted to hospital; 3311 patients were air lifted, 164 patients were ground escorted by a HEMS physician, 1421 were assisted on scene by HEMS, but escorted by the ground units and 2035 missions were aborted. The mortality was highest among the airlifted and ground escorted patients, and lowest among the patients in the aborted mission group. Mortality for the airlifted patients increased from 8.2% (95% CI; 7.3 to 9.2) at day 1 to 19.5% (95% CI; 18.2 to 20.9) after 1 year. The airlifted and ground escorted patients were frequently admitted to ICU and subsequently mechanically ventilated and they also had an increased LOS compared with the patients only assisted on scene by HEMS and the patients in the aborted mission group.

conclusionPatients to whom HEMS are dispatched are often critically ill or injured and have a relatively high mortality. The patients airlifted or ground escorted to hospital by HEMS appear more critically ill or injured compared with the assisted patients and the patients in the aborted mission group. The on-scene triage seems appropriate.

Indexed as

Air AmbulancesEmergency Medical ServicesHospitalizationAdultAgedAircraftDenmarkFemaleHumansMaleMiddle AgedMortalityRetrospective StudiesTriageaccident & emergency medicineepidemiologyquality in health care

Identifiers

PMID32868364
PMCPMC7462229

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.