Evidence map›Paper›PMID 39731159›Full record

Observational studyScandinavian journal of trauma, resuscitation and emergency medicine2024

Helicopter emergency medical services demonstrate reduced time to emergency anaesthesia in an undifferentiated trauma population: a retrospective observational analysis across three major trauma networks.

Daniel Heritage, Joanne Griggs, Jack Barrett, Scott Clarke, Rory Carroll, Richard Lyon, Duncan Bootland

Abstract readObservational Study
In one paragraph

Observational study in Scandinavian journal of trauma, resuscitation and emergency medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–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

2 citing papers in PubMed.

  1. Chasing time targets in pre-hospital emergency anaesthesia: is it time to rethink?Scandinavian journal of trauma, resuscitation and emergency medicine · 2026
    Article
  2. 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

7 authors.

Daniel HeritageUniversity Hospital Sussex, Brighton and Hove, Brighton, UK.
Joanne GriggsAir Ambulance Charity Kent Surrey Sussex, Redhill Aerodrome, Redhill, Surrey, RH1 5YP, UK. jogriggs@aakss.org.uk.
Jack BarrettAir Ambulance Charity Kent Surrey Sussex, Redhill Aerodrome, Redhill, Surrey, RH1 5YP, UK.
Scott ClarkeAir Ambulance Charity Kent Surrey Sussex, Redhill Aerodrome, Redhill, Surrey, RH1 5YP, UK.
Rory CarrollSt George's Hospital, Tooting, Blackshaw Road, London, SW17 0QT, UK.
Richard LyonAir Ambulance Charity Kent Surrey Sussex, Redhill Aerodrome, Redhill, Surrey, RH1 5YP, UK.
Duncan BootlandAir Ambulance Charity Kent Surrey Sussex, Redhill Aerodrome, Redhill, Surrey, RH1 5YP, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEarly rapid sequence induction of anaesthesia (RSI) and tracheal intubation for patients with airway or ventilatory compromise following major trauma is recommended, with guidance suggesting a 45-min timeframe. Whilst on-scene RSI is recommended, the potential time benefit offered by Helicopter Emergency Medical Services (HEMS) has not been studied. We compared the time from 999/112 emergency call to delivery of RSI between patients intubated either in the Emergency Department or pre-hospital by HEMS.

methodsA retrospective observational cohort study of major trauma patients in South-East England who received a pre-hospital RSI (PHRSI) or Emergency Department RSI (EDRSI) between 2 January 2018 and 24 September 2019. Data were extracted from the UK Trauma Audit and Research Network database. The primary outcome was the time from emergency call to delivery of RSI. Secondary outcomes included mortality at 30-days or hospital discharge, time from arrival of service at hospital or scene to RSI, time from emergency call to Computerised Tomography scan, and conveyance interval. Linear regression was used to model time to RSI in both groups.

resultsOf 378 eligible patients, 209 patients met inclusion criteria. 103 received a PHRSI and 106 received an EDRSI. Most patients were male (n = 171, 82%) and the median age was 48 years (IQR 28-65). 94% sustained a blunt injury mechanism and head was the most injured body region for both cohorts (n = 134, 64%). 63% (n = 67) of patients receiving a PHRSI were conveyed by helicopter. PHRSI was delivered significantly earlier with a median of 64 [IQR 51-75] minutes (95% CI, 60-68) compared with EDRSI with a median of 84 [IQR 68-113] minutes (95% CI, 76-94), p < 0.001).

conclusionMajor trauma patients who had a pre-hospital RSI received this time-critical intervention sooner after their injury than those who received an emergency anaesthetic after conveyance to a specialist hospital. Patient outcome benefit of HEMS delivered early RSI should be explored.

Indexed as

Air AmbulancesEmergency Medical ServicesAdultAgedEnglandFemaleHumansIntubation, IntratrachealMaleMiddle AgedRapid Sequence Induction and IntubationRetrospective StudiesTime FactorsTime-to-TreatmentWounds and InjuriesAnaesthesiaHelicopter emergency medical servicesPre-hospitalTrauma

Identifiers

PMID39731159
PMCPMC11681659

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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.