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Fouche PF, Stein C, Nichols M, Meadley B, Bendall JC, Smith K, Anderson D, Doi SA. Tranexamic Acid for Traumatic Injury in the Emergency Setting: A Systematic Review and Bias-Adjusted Meta-Analysis of Randomized Controlled Trials. Ann Emerg Med 2024; 83:435-445. [PMID: 37999653 DOI: 10.1016/j.annemergmed.2023.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/14/2023] [Accepted: 10/06/2023] [Indexed: 11/25/2023]
Abstract
STUDY OBJECTIVE Traumatic injury causes a significant number of deaths due to bleeding. Tranexamic acid (TXA), an antifibrinolytic agent, can reduce bleeding in traumatic injuries and potentially enhance outcomes. Previous reviews suggested potential TXA benefits but did not consider the latest trials. METHODS A systematic review and bias-adjusted meta-analysis were performed to assess TXA's effectiveness in emergency traumatic injury settings by pooling estimates from randomized controlled trials. Researchers searched Medline, Embase, and Cochrane Central for randomized controlled trials comparing TXA's effects to a placebo in emergency trauma cases. The primary endpoint was 1-month mortality. The methodological quality of the trials underwent assessment using the MASTER scale, and the meta-analysis applied the quality-effects method to adjust for methodological quality. RESULTS Seven randomized controlled trials met the set criteria. This meta-analysis indicated an 11% decrease in the death risk at 1 month after TXA use (odds ratio [OR] 0.89, 95% confidence interval [CI] 0.84 to 0.95) with a number needed to treat of 61 to avoid 1 additional death. The meta-analysis also revealed reduced 24-hour mortality (OR 0.76, 95% CI 0.65 to 0.88) for TXA. No compelling evidence of increased vascular occlusive events emerged (OR 0.96, 95% CI 0.73 to 1.27). Subgroup analyses highlighted TXA's effectiveness in general trauma versus traumatic brain injury and survival advantages when administered out-of-hospital versus inhospital. CONCLUSIONS This synthesis demonstrates that TXA use for trauma in emergencies leads to a reduction in 1-month mortality, with no significant evidence of problematic vascular occlusive events. Administering TXA in the out-of-hospital setting is associated with reduced mortality compared to inhospital administration, and less mortality with TXA in systemic trauma is noted compared with traumatic brain injury specifically.
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Affiliation(s)
| | - Christopher Stein
- Department of Emergency Medical Care, University of Johannesburg, Johannesburg, Gauteng, South Africa
| | - Martin Nichols
- Clinical Systems, New South Wales Ambulance, Rozelle, NSW, Australia
| | - Benjamin Meadley
- Department of Paramedicine, Monash University, Mulgrave, Victoria, Australia
| | - Jason C Bendall
- Clinical Systems, New South Wales Ambulance, Rozelle, NSW, Australia
| | | | | | - Suhail A Doi
- College of Medicine, Qatar University, Doha, Qatar
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Culkin MC, Bele P, Georges AP, Santos P, Niziolek G, Kaplan LJ, Smith DH, Pascual JL. Dose-Dependent Tranexamic Acid Blunting of Penumbral Leukocyte Mobilization and Blood-Brain Barrier Permeability Following Traumatic Brain Injury: An In Vivo Murine Study. Neurocrit Care 2024:10.1007/s12028-024-01952-0. [PMID: 38443709 DOI: 10.1007/s12028-024-01952-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 01/29/2024] [Indexed: 03/07/2024]
Abstract
BACKGROUND Early posttraumatic brain injury (TBI) tranexamic acid (TXA) may reduce blood-brain barrier (BBB) permeability, but it is unclear if this effect is fixed regardless of dose. We hypothesized that post-TBI TXA demonstrates a dose-dependent reduction of in vivo penumbral leukocyte mobilization, BBB microvascular permeability, and enhancement of neuroclinical recovery. METHODS CD1 male mice (n = 40) were randomly assigned to TBI by controlled cortical impact (injury [I]) or sham TBI (S), followed by intravenous bolus of either saline (placebo [P]) or TXA (15, 30, or 60 mg/kg). At 48 h, in vivo pial intravital microscopy visualized live penumbral BBB microvascular leukocytes and albumin leakage. Neuroclinical recovery was assessed by Garcia Neurological Test scores and animal weight changes at 24 h and 48 h after injury. RESULTS I + TXA60 reduced live penumbral leukocyte rolling compared with I + P (p < 0.001) and both lower TXA doses (p = 0.017 vs. I + TXA15, p = 0.012 vs. I + TXA30). Leukocyte adhesion was infrequent and similar across groups. Only I + TXA60 significantly reduced BBB permeability compared with that in the I + P (p = 0.004) group. All TXA doses improved Garcia Test scores relative to I + P at both 24 h and 48 h (p < 0.001 vs. I + P for all at both time points). Mean 24-h body weight loss was greatest in the I + P (- 8.7 ± 1.3%) group and lowest in the I + TXA15 (- 4.4 ± 1.0%, p = 0.051 vs. I + P) group. CONCLUSIONS Only higher TXA dosing definitively abrogates penumbral leukocyte mobilization, preserving BBB integrity post TBI. Some neuroclinical recovery is observed, even with lower TXA dosing. Better outcomes with higher dose TXA after TBI may occur secondary to blunting of leukocyte-mediated penumbral cerebrovascular inflammation.
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Affiliation(s)
- Matthew C Culkin
- Division of Traumatology, Surgical Critical Care and Emergency Surgery, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, SICU Administration Office - 5 Founders Pavilion, 3400 Spruce Street, Philadelphia, PA, 19104, USA
- Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Priyanka Bele
- Division of Traumatology, Surgical Critical Care and Emergency Surgery, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, SICU Administration Office - 5 Founders Pavilion, 3400 Spruce Street, Philadelphia, PA, 19104, USA
- Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Anastasia P Georges
- Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, USA
| | - Patricia Santos
- Division of Traumatology, Surgical Critical Care and Emergency Surgery, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, SICU Administration Office - 5 Founders Pavilion, 3400 Spruce Street, Philadelphia, PA, 19104, USA
- Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Grace Niziolek
- Division of Traumatology, Surgical Critical Care and Emergency Surgery, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, SICU Administration Office - 5 Founders Pavilion, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Lewis J Kaplan
- Division of Traumatology, Surgical Critical Care and Emergency Surgery, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, SICU Administration Office - 5 Founders Pavilion, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Douglas H Smith
- Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jose L Pascual
- Division of Traumatology, Surgical Critical Care and Emergency Surgery, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, SICU Administration Office - 5 Founders Pavilion, 3400 Spruce Street, Philadelphia, PA, 19104, USA.
- Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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Franchini M, Focosi D, Zaffanello M, Mannucci PM. Efficacy and safety of tranexamic acid in acute haemorrhage. BMJ 2024; 384:e075720. [PMID: 38176733 DOI: 10.1136/bmj-2023-075720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Affiliation(s)
- Massimo Franchini
- Department of Transfusion Medicine and Hematology, Carlo Poma Hospital, Mantova, Italy
| | - Daniele Focosi
- North-Western Tuscany Blood Bank, Pisa University Hospital, Italy
| | - Marco Zaffanello
- Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Pier Mannuccio Mannucci
- Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico and University of Milan, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
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Gerlach RM, Gerstein NS, Tawil I. The PATCH-Trauma Trial: Antifibrinolytics and Stanching the Blood Meridian in Trauma. J Cardiothorac Vasc Anesth 2023; 37:2428-2430. [PMID: 37704490 DOI: 10.1053/j.jvca.2023.08.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 08/14/2023] [Indexed: 09/15/2023]
Affiliation(s)
- Rebecca M Gerlach
- Department of Anesthesiology and Critical Care Medicine, University of New Mexico School of Medicine, Albuquerque, NM
| | - Neal S Gerstein
- Department of Anesthesiology and Critical Care Medicine, University of New Mexico School of Medicine, Albuquerque, NM.
| | - Isaac Tawil
- Department of Emergency Medicine, University of New Mexico School of Medicine, Albuquerque, NM
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