Evidence map›Paper›PMID 35864051›Full record

Trial reportSurgery2022

Prehospital plasma is associated with survival principally in patients transferred from the scene of injury: A secondary analysis of the PAMPer trial.

Rachel E Lewis, Sruthi L Muluk, Katherine M Reitz, Francis X Guyette, Joshua B Brown, Richard S Miller, Brian G Harbrecht, Jeffrey A Claridge, Herb A Phelan, Mark H Yazer and 5 more

Open access · greenAbstract readClinical Trial
In one paragraph

Trial report in Surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 8% 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

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.

  1. Blood transfusion strategies for major bleeding in trauma.The Cochrane database of systematic reviews · 2025
    Pooled it
  2. Article
  3. Observational
  4. Article
  5. Review
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.

Rachel E LewisDepartment of Surgery, University of Tennessee Graduate School of Medicine, Knoxville, TN.
Sruthi L MulukDepartment of Surgery, University of Pittsburgh, Pittsburgh, PA.
Katherine M ReitzDepartment of Surgery, University of Pittsburgh, Pittsburgh, PA.
Francis X GuyetteDepartment of Emergency Medicine, University of Pittsburgh, Pittsburgh, PA.
Joshua B BrownDepartment of Surgery, University of Pittsburgh, Pittsburgh, PA.
Richard S MillerDepartment of Surgery, Vanderbilt University Medical Center, Nashville, TN.
Brian G HarbrechtDepartment of Surgery, University of Louisville, Louisville, KY.
Jeffrey A ClaridgeDepartment of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH.
Herb A PhelanDepartment of Surgery, University of Texas Southwestern, Dallas, TX.
Mark H YazerDepartment of Pathology, University of Pittsburgh, Pittsburgh, PA.
R Eric HeidelDepartment of Surgery, University of Tennessee Graduate School of Medicine, Knoxville, TN.
A Shawn RoweDepartment of Surgery, University of Tennessee Medical Center at Knoxville, Knoxville, TN.
Jason L SperryDepartment of Surgery, University of Pittsburgh, Pittsburgh, PA. Electronic address: sperryjl@upmc.edu.
Brian J DaleyDepartment of Surgery, University of Tennessee Graduate School of Medicine, Knoxville, TN.
PAMPer Study Group
University of Pittsburgh · USUniversity of Tennessee at Knoxville · USCase Western Reserve University · USThe University of Texas Southwestern Medical Center · USUniversity of Louisville · USUniversity of Tennessee Medical Center · USVanderbilt University Medical Center · US

Funding

Vascular Surgery Research Training (VascTrain) ProgramT32HL098036 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Edith Tzeng · 2010 to 2026
$7.2M
NHLBI NIH HHS T32 HL098036NIA NIH HHS L30 AG064730
6 · The paper itself

Abstract

backgroundWe sought to characterize if prehospital transfer origin from the scene of injury (SCENE) or from a referral emergency department (REF) alters the survival benefit attributable to prehospital plasma resuscitation in patients at risk of hemorrhagic shock.

methodsWe performed a secondary analysis of data from a recently completed prehospital plasma clinical trial. All of the enrolled patients from either the SCENE or REF groups were included. The demographics, injury characteristics, shock severity and resuscitation needs were compared. The primary outcome was a 30-day mortality. Kaplan-Meier analysis and Cox-hazard regression were used to characterize the independent survival benefits of prehospital plasma for transport origin groups.

resultsOf the 501 enrolled patients, the REF group patients (n = 111) accounted for 22% with the remaining (n = 390) originating from the scene. The SCENE group patients had higher injury severity and were more likely intubated prehospital. The REF group patients had longer prehospital times and received greater prehospital crystalloid and blood products. Kaplan-Meier analysis revealed a significant 30-day survival benefit associated with prehospital plasma in the SCENE group (P < .01) with no difference found in the REF group patients (P = .36). The Cox-regression verified after controlling for relevant confounders that prehospital plasma was independently associated with a 30-day survival in the SCENE group patients (hazard ratio 0.59; 95% confidence interval 0.39-0.89; P = .01) with no significant relationship found in the REF group patients (hazard ratio 1.03, 95% confidence interval 0.4-3.0).

conclusionImportant differences across the SCENE and REF cohorts exist that are essential to understand when planning prehospital studies. Prehospital plasma is associated with a survival benefit primarily in SCENE group patients. The results are exploratory but suggest transfer origin may be an important determinant of prehospital plasma benefit.

Indexed as

Emergency Medical ServicesShock, HemorrhagicWounds and InjuriesCrystalloid SolutionsHumansInjury Severity ScorePlasmaResuscitationCrystalloid Solutions

Identifiers

PMID35864051
PMCPMC9999176
OpenAlexW4285806777

What OpenQuestion holds

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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.