Evidence map›Paper›PMID 32928874›Full record

Observational studyEmergency medicine journal : EMJ2020

End-tidal and arterial carbon dioxide gradient in serious traumatic brain injury after prehospital emergency anaesthesia: a retrospective observational study.

James Price, Daniel D Sandbach, Ari Ercole, Alastair Wilson, Ed Benjamin Graham Barnard

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Emergency medicine journal : EMJ, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.0field-weighted citation impact, top 10% of its field
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

16 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Observational
  3. The PaCOJournal of the Intensive Care Society · 2026
    Article
  4. Service evaluation: Accuracy of using end-tidal COJournal of the Intensive Care Society · 2026
    Article
  5. Article
  6. Review
  7. Article
  8. Observational
  9. Article
  10. Observational
  11. Article
  12. Article
  13. Observational
  14. The PaCOJournal of the Intensive Care Society · 2022
    Article
  15. Review
  16. Observational
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 at 4 institutions in 1 country.

James PriceDepartment of Research, Audit, Innovation, & Development (RAID), East Anglian Air Ambulance, Norwich, UK james.price@eaaa.org.uk.ORCID http://orcid.org/0000-0002-9643-692X
Daniel D SandbachDepartment of Research, Audit, Innovation, & Development (RAID), East Anglian Air Ambulance, Norwich, UK.
Ari ErcoleDepartment of Research, Audit, Innovation, & Development (RAID), East Anglian Air Ambulance, Norwich, UK.ORCID http://orcid.org/0000-0001-8350-8093
Alastair WilsonDepartment of Research, Audit, Innovation, & Development (RAID), East Anglian Air Ambulance, Norwich, UK.
Ed Benjamin Graham BarnardDepartment of Research, Audit, Innovation, & Development (RAID), East Anglian Air Ambulance, Norwich, UK.ORCID http://orcid.org/0000-0002-5187-1952
Addenbrooke's Hospital · GBRoyal London Hospital · GBRoyal Navy · GBUniversity of Cambridge · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesIn the UK, 20% of patients with severe traumatic brain injury (TBI) receive prehospital emergency anaesthesia (PHEA). Current guidance recommends an end-tidal carbon dioxide (ETCO

methodsA retrospective cohort study of adult patients with serious TBI, who received a PHEA by a prehospital critical care team in the East of England between 1 April 2015 and 31 December 2017. Linear regression was performed to test for correlation and reported as R-squared (R

results107 patients were eligible for inclusion. Sixty-seven patients did not receive a PaCO

conclusionThere is only moderate correlation of ETCO

Indexed as

Emergency Medical ServicesAdultAnesthesiaBrain Injuries, TraumaticCarbon DioxideEnglandFemaleHumansMaleMiddle AgedRespiration, ArtificialRetrospective StudiesSecondary PreventionCarbon Dioxideanaesthesiaheadprehospital caretrauma

Identifiers

PMID32928874
PMCPMC7588597
OpenAlexW3085119648

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.