Evidence map›Paper›PMID 37964393›Full record

ArticleTrials2023

The SWiFT trial (Study of Whole Blood in Frontline Trauma)-the clinical and cost effectiveness of pre-hospital whole blood versus standard care in patients with life-threatening traumatic haemorrhage: study protocol for a multi-centre randomised controlled trial.

Jason E Smith, Ed B G Barnard, Charlie Brown-O'Sullivan, Rebecca Cardigan, Jane Davies, Annie Hawton, Emma Laing, Joanne Lucas, Richard Lyon, Gavin D Perkins and 5 more

Open access · goldAbstract readClinical Trial Protocol
In one paragraph

Article in Trials, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
6.6field-weighted citation impact, top 2% 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, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.

  1. Blood transfusion strategies for major bleeding in trauma.The Cochrane database of systematic reviews · 2025
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Prehospital transfusion strategies in haemorrhagic shock.Scandinavian journal of trauma, resuscitation and emergency medicine · 2026
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. What we do matters.Trauma surgery & acute care open · 2025
    Review
  13. Review
  14. Review
  15. Review
  16. 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

15 authors at 7 institutions in 1 country.

Jason E SmithAcademic Department of Military Emergency Medicine, Royal Centre for Defence Medicine, Birmingham, UK. jasonesmith@nhs.net.ORCID http://orcid.org/0000-0002-6143-0421
Ed B G BarnardAcademic Department of Military Emergency Medicine, Royal Centre for Defence Medicine, Birmingham, UK.
Charlie Brown-O'SullivanNHS Blood and Transplant Clinical Trials Unit, Cambridge, UK.
Rebecca CardiganNHS Blood & Transplant, Bristol, UK.
Jane DaviesNHS Blood & Transplant, Bristol, UK.
Annie HawtonHealth Economics Group, University of Exeter, Exeter, UK.
Emma LaingIntensive Care National Audit and Research Centre (ICNARC), London, UK.
Joanne LucasNHS Blood and Transplant Clinical Trials Unit, Cambridge, UK.
Richard LyonAir Ambulance Kent Surrey Sussex, Rochester, UK.
Gavin D PerkinsWarwick Medical School, University of Warwick, Coventry, CV4 7AL, UK.
Laura SmithNHS Blood and Transplant Clinical Trials Unit, Cambridge, UK.
Simon J StanworthNHS Blood & Transplant, Bristol, UK.
Anne WeaverLondon's Air Ambulance and Royal London Hospital, London, UK.
Tom WoolleyAcademic Department of Military Anaesthesia and Critical Care, Royal Centre for Defence Medicine, Birmingham, UK.
Laura GreenNHS Blood & Transplant, Bristol, UK.
NHS Blood and Transplant · GBRoyal Navy · GBIntensive Care National Audit & Research Centre · GBUniversity of Exeter · GBUniversity of Surrey · GBUniversity of Ulster · GBUniversity of Warwick · GB

Funding

Ministry of Defence Letter dated 22 Mar 2021NHS Blood and Transplant 21-102-GEN
6 · The paper itself

Abstract

backgroundEarly blood transfusion improves survival in patients with life-threatening bleeding, but the optimal transfusion strategy in the pre-hospital setting has yet to be established. Although there is some evidence of benefit with the use of whole blood, there have been no randomised controlled trials exploring the clinical and cost effectiveness of pre-hospital administration of whole blood versus component therapy for trauma patients with life-threatening bleeding. The aim of this trial is to determine whether pre-hospital leukocyte-depleted whole blood transfusion is better than standard care (blood component transfusion) in reducing the proportion of participants who experience death or massive transfusion at 24 h.

methodsThis is a multi-centre, superiority, open-label, randomised controlled trial with internal pilot and within-trial cost-effectiveness analysis. Patients of any age will be eligible if they have suffered major traumatic haemorrhage and are attended by a participating air ambulance service. The primary outcome is the proportion of participants with traumatic haemorrhage who have died (all-cause mortality) or received massive transfusion in the first 24 h from randomisation. A number of secondary clinical, process, and safety endpoints will be collected and analysed. Cost (provision of whole blood, hospital, health, and wider care resource use) and outcome data will be synthesised to present incremental cost-effectiveness ratios for the trial primary outcome and cost per quality-adjusted life year at 90 days after injury. We plan to recruit 848 participants (a two-sided test with 85% power, 5% type I error, 1-1 allocation, and one interim analysis would require 602 participants-after allowing for 25% of participants in traumatic cardiac arrest and an additional 5% drop out, the sample size is 848). DISCUSSION: The SWiFT trial will recruit 848 participants across at least ten air ambulances services in the UK. It will investigate the clinical and cost-effectiveness of whole blood transfusion versus component therapy in the management of patients with life-threatening bleeding in the pre-hospital setting.

trial registrationISRCTN: 23657907; EudraCT: 2021-006876-18; IRAS Number: 300414; REC: 22/SC/0072, 21 Dec 2021.

Indexed as

Cost-Effectiveness AnalysisHemorrhageBlood Component TransfusionBlood TransfusionHospitalsHumansMulticenter Studies as TopicRandomized Controlled Trials as TopicEmergency medicineMajor haemorrhageMajor traumaPre-hospitalTransfusionWhole blood

Identifiers

PMID37964393
PMCPMC10644622
OpenAlexW4388659851

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.