Evidence map›Paper›PMID 33105308›Full record

Trial reportThe journal of trauma and acute care surgery2020

Tranexamic acid administration in the field does not affect admission thromboelastography after traumatic brain injury.

Alexandra L Dixon, Belinda H McCully, Elizabeth A Rick, Elizabeth Dewey, David H Farrell, Laurie J Morrison, Jason McMullan, Bryce R H Robinson, Jeannie Callum, Brian Tibbs and 13 more

Open access · greenAbstract readClinical Trial, Phase IIMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in The journal of trauma and acute care surgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 11% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.

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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

23 authors at 1 institution in 1 country.

Alexandra L DixonFrom the Departments of Surgery (A.L.D., B.H.M., E.A.R., E.D., D.H.F., S.E.R., M.A.S., M.F.) and Emergency Medicine (J. Jui), Oregon Health and Science University, Portland, Oregon; Departments of Emergency Medicine (J.M.) and Surgery (J. Johannigman), University of Cincinnati, Cincinnati, Ohio; Departments of Surgery (B.R.H.R., E.M.B., P.K.) and Biostatistics (D.K., B.M., E.N.M., S.M., K.S., J.H.), University of Washington, Seattle, Washington; Trauma Surgery (B.T.), Texas Health Presbyterian Hospital; Department of Emergency Medicine (J.S.G.), Baylor University Medical Center, Dallas, Texas; Johns Hopkins School of Medicine (M.L.W.), Baltimore, Maryland; Department of Emergency Medicine (T.P.A., M.R.C.), Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Emergency Medicine (J.M.T., J.C.), University of British Columbia, Vancouver, British Columbia, Canada; Department of Surgery (S.E.R.), Scripps Memorial Hospital La Jolla, La Jolla, California; Departments of Emergency Medicine (A.H.I.) and Internal Medicine (A.H.I.), University of Texas Southwestern Medical Center, Dallas, Texas; Providence Health Care Research Institute (J.C.), Vancouver, British Columbia, Canada; Rescu, Li Ka Shing Knowledge Institute (L.J.M.), and Department of Surgery (S.R.), St. Michael's Hospital; Division of Emergency Medicine, Department of Medicine Faculty of Medicine (L.J.M.), and Department of Laboratory Medicine and Pathobiology (J.C.), University of Toronto, Toronto, Ontario, Canada; Departments of Emergency Medicine (R.J.F.) and Surgery (D.J.D.), Regions Hospital, St. Paul, Minnesota; Department of Surgery (C.W., P.L.B.), University of Alabama, Birmingham, Alabama; Department of Surgery (C.E.W., B.A.C., L.E.V.), McGovern Medical School, University of Texas Health Science Center, Houston, Texas; Department of Laboratory Medicine and Molecular Diagnostics (J.C.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Departments of Emergency Medicine (N.J.R.) and Surgery (R.R.G.), John Peter Smith Health Network, Fort Worth, Texas; Department of Surgery (M.D.Z., M.F.), Mayo Clinic, Rochester, Minnesota; British Columbia Emergency Health Services (J.M.T., R.S.), Vancouver, British Columbia, Canada; Department of Emergency Medicine (L.K., A.H.), Hennepin County Medical Center, Minneapolis, Minnesota; Department of Surgery (S.R.), St. Michael's Hospital, Toronto, Ontario, Canada; Department of Emergency Medicine (M.G.), Medical City Plano, Plano; Emergency Medicine (R.S.), Methodist Dallas Medical Center, Dallas, Texas; National Heart, Lung, and Blood Institute, National Institutes of Health (G.S.), Bethesda, Maryland; and Department of Trauma Surgery (W.W.), Texas Health Harris Methodist Hospital, Fort Worth, Texas.
Belinda H McCully
Elizabeth A Rick
Elizabeth Dewey
David H Farrell
Laurie J Morrison
Jason McMullan
Bryce R H Robinson
Jeannie Callum
Brian Tibbs
David J Dries
Jonathan Jui
Rajesh R Gandhi
John S Garrett
Myron L Weisfeldt
Charles E Wade
Tom P Aufderheide
Ralph J Frascone
John M Tallon
Delores Kannas
Carolyn Williams
Susan E Rowell
Martin A Schreiber
Johns Hopkins University · US

Funding

Resuscitation Outcomes Consortium (ROC) Data Coordinating CenterU01HL077863 · NHLBI · UNIVERSITY OF WASHINGTON · PI MAY, SUSANNE · 2004 to 2015
$125.1M
Resuscitation Outcomes Consortium (ROC) Regional Clinical Center-PittsburghU01HL077871 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CALLAWAY, CLIFTON W. · 2004 to 2015
$4.0M
Southeastern Resucitation Research CenterU01HL077881 · NHLBI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI KERBY, JEFFREY D, WANG, HENRY E. · 2004 to 2015
$3.9M
Resuscitation Outcomes Consortium (ROC) Regional Clinical Center-PortlandU01HL077873 · NHLBI · OREGON HEALTH & SCIENCE UNIVERSITY · PI DAYA, MOHAMUD RAMZANALI · 2004 to 2015
$3.9M
Resuscitation Outcomes Consortium Regional Clinical Center-DFW Center for ResusciU01HL077887 · NHLBI · UT SOUTHWESTERN MEDICAL CENTER · PI IDRIS, AHAMED H · 2004 to 2015
$3.2M
Resuscitation Outcomes Consortium (ROC) Regional Clinical Centers-MilwaukeeU01HL077866 · NHLBI · MEDICAL COLLEGE OF WISCONSIN · PI AUFDERHEIDE, TOM PAUL · 2004 to 2015
$3.0M
Blood Based Biomarkers of Injury and Outcome in the Prehospital TXA for TBI TrialR01HL126585 · NHLBI · OREGON HEALTH & SCIENCE UNIVERSITY · PI ROWELL, SUSAN · 2015 to 2018
$1.5M
NHLBI NIH HHS L30 HL138880NHLBI NIH HHS R01 HL126585NHLBI NIH HHS U01 HL077863NHLBI NIH HHS U01 HL077866NHLBI NIH HHS U01 HL077871NHLBI NIH HHS U01 HL077873NHLBI NIH HHS U01 HL077881NHLBI NIH HHS U01 HL077887
6 · The paper itself

Abstract

backgroundNo Food and Drug Administration-approved medication improves outcomes following traumatic brain injury (TBI). A forthcoming clinical trial that evaluated the effects of two prehospital tranexamic acid (TXA) dosing strategies compared with placebo demonstrated no differences in thromboelastography (TEG) values. We proposed to explore the impact of TXA on markers of coagulation and fibrinolysis in patients with moderate to severe TBI.

methodsData were extracted from a placebo-controlled clinical trial in which patients 15 years or older with TBI (Glasgow Coma Scale, 3-12) and systolic blood pressure of ≥90 mm Hg were randomized prehospital to receive placebo bolus/placebo infusion (placebo), 1 g of TXA bolus/1 g of TXA infusion (bolus maintenance), or 2 g of TXA bolus/placebo infusion (bolus only). Thromboelastography was performed, and coagulation measures including prothrombin time, activated partial thromboplastin time, international ratio, fibrinogen, D-dimer, plasmin-antiplasmin (PAP), thrombin antithrombin, tissue plasminogen activator, and plasminogen activator inhibitor 1 were quantified at admission and 6 hours later.

resultsOf 966 patients receiving study drug, 700 had laboratory tests drawn at admission and 6 hours later. There were no statistically significant differences in TEG values, including LY30, between groups (p > 0.05). No differences between prothrombin time, activated partial thromboplastin time, international ratio, fibrinogen, thrombin antithrombin, tissue plasminogen activator, and plasminogen activator inhibitor 1 were demonstrated across treatment groups. Concentrations of D-dimer in TXA treatment groups were less than placebo at 6 hours (p < 0.001). Concentrations of PAP in TXA treatment groups were less than placebo on admission (p < 0.001) and 6 hours (p = 0.02). No differences in D-dimer and PAP were observed between bolus maintenance and bolus only.

conclusionWhile D-dimer and PAP levels reflect a lower degree of fibrinolysis following prehospital administration of TXA when compared with placebo in a large prehospital trial of patients with TBI, TEG obtained on admission and 6 hours later did not demonstrate any differences in fibrinolysis between the two TXA dosing regimens and placebo. LEVEL OF EVIDENCE: Diagnostic test, level III.

Indexed as

Abbreviated Injury ScaleAdolescentAdultalpha-2-AntiplasminAntifibrinolytic AgentsBlood CoagulationBlood Coagulation DisordersBrain Injuries, TraumaticFemaleFibrin Fibrinogen Degradation ProductsFibrinolysinFibrinolysisHumansInfusions, IntravenousInjections, IntravenousMalealpha-2-AntiplasminAntifibrinolytic AgentsFibrin Fibrinogen Degradation Productsfibrin fragment DFibrinolysinSERPINF2 protein, humanTranexamic Acid

Identifiers

PMID33105308
PMCPMC7878849
OpenAlexW3082496343

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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.