Evidence map›Paper›PMID 30936005›Full record

ArticleJournal of the American College of Surgeons2019

Does Tranexamic Acid Improve Clot Strength in Severely Injured Patients Who Have Elevated Fibrin Degradation Products and Low Fibrinolytic Activity, Measured by Thrombelastography?

Hunter B Moore, Ernest E Moore, Michael P Chapman, Kirk C Hansen, Mitchell J Cohen, Frederic M Pieracci, James Chandler, Angela Sauaia

Open access · greenAbstract read
In one paragraph

Article in Journal of the American College of Surgeons, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.7field-weighted citation impact, top 5% 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

20 citing papers in PubMed, 55 citations in OpenAlex.

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  15. Trauma-induced coagulopathy.Nature reviews. Disease primers · 2021
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Hunter B MooreDepartment of Surgery, School of Medicine, University of Colorado, Denver, CO. Electronic address: hunter.moore@ucdenver.edu.
Ernest E MooreDepartment of Surgery, School of Medicine, University of Colorado, Denver, CO; Department of Surgery, Ernest E Moore Shock and Trauma Center at Denver Health, Denver, CO.
Michael P ChapmanDepartment of Surgery, School of Medicine, University of Colorado, Denver, CO.
Kirk C HansenDepartment of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado, Denver, CO.
Mitchell J CohenDepartment of Surgery, Ernest E Moore Shock and Trauma Center at Denver Health, Denver, CO.
Frederic M PieracciDepartment of Surgery, Ernest E Moore Shock and Trauma Center at Denver Health, Denver, CO.
James ChandlerDepartment of Surgery, Ernest E Moore Shock and Trauma Center at Denver Health, Denver, CO.
Angela SauaiaSchool of Public Health, University of Colorado, Denver, CO; Department of Surgery, Ernest E Moore Shock and Trauma Center at Denver Health, Denver, CO.
University of Colorado Denver · USDenver Health Medical Center · USColorado School of Public Health · US

Funding

Analysis and Characterization of Trauma-Induced CoagulopathyUM1HL120877 · NHLBI · UNIVERSITY OF VERMONT & ST AGRIC COLLEGE · PI MORRISSEY, JAMES H., WISNIEWSKI, STEPHEN R · 2013 to 2019
$26.6M
Mechanisms of Trauma-Induced CoagulopathyT32GM008315 · NIGMS · UNIVERSITY OF COLORADO DENVER · PI Mitchell Cohen, ELIZABETH J. KOVACS · 1991 to 2026
$7.1M
NHLBI NIH HHS UM1 HL120877NIGMS NIH HHS T32 GM008315
6 · The paper itself

Abstract

backgroundElevated d-dimers in injured patients with paradoxically low fibrinolysis activity measured by viscoelastic assays have been speculated to be "occult" fibrinolysis. However, an alternative explanation is that these patients have previously activated their fibrinolytic system and have shut it down by the time of blood draw, and would gain no benefit in clot strength with tranexamic acid (TXA). We hypothesize that TXA will not increase clot strength in injured patients with low fibrinolytic activity measured by thrombelastography (TEG), despite biomarkers of fibrinolysis activation. STUDY

designThree TEG assays (rapid, tissue plasminogen activator, and functional fibrinogen) were run on trauma patients. The tissue plasminogen activator TEG served as a functional assay to quantify depletion of fibrinolysis inhibitors (DFI). Patients were stratified by DFI vs non-DFI and then by rapid TEG lysis at 30 minutes phenotype cutoffs. Response to TXA was evaluated with functional fibrinogen TEG by calculating percent change in clot strength with the addition of exogenous TXA in the TEG cup.

resultsSix hundred and thirty patients with a median new injury severity score of 20 were analyzed. Depletion of fibrinolysis inhibitors was present in 116 (18%). The DFI patients had significantly increased d-dimer (p < 0.001) and lower fibrinogen (p < 0.001). The DFI patients had increased rates of massive transfusion (33% vs 3.3%; p < 0.001) and mortality (40% vs 6.2%; p < 0.001). Among DFI patients, TXA significantly improved fibrin clot strength with hyperfibrinolysis (+19% clot strength; p < 0.001) but not with shutdown (+1.2%) or physiologic (-2.5%).

conclusionsPatients with DFI have multiple abnormalities of their coagulation system, but only DFI patients with hyperfibrinolysis have improved fibrin clot strength with TXA.

Indexed as

AdultAntifibrinolytic AgentsBiomarkersFemaleFibrin Clot Lysis TimeFibrin Fibrinogen Degradation ProductsFibrinogenFibrinolysisFollow-Up StudiesHemorrhageHumansMaleMiddle AgedRetrospective StudiesThrombelastographyTranexamic AcidAntifibrinolytic AgentsBiomarkersFibrin Fibrinogen Degradation ProductsFibrinogenTranexamic Acid

Identifiers

PMID30936005
PMCPMC6874093
OpenAlexW2932080593

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.