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Juffermans NP, Bouzat P. Visco-elastic testing in traumatic bleeding. Intensive Care Med 2024; 50:1152-1153. [PMID: 38695918 DOI: 10.1007/s00134-024-07437-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 04/07/2024] [Indexed: 07/14/2024]
Affiliation(s)
- Nicole P Juffermans
- Department of Intensive Care and Laboratory of Translational Intensive Care, Erasmus Medical Center, Rotterdam, The Netherlands.
| | - Pierre Bouzat
- Grenoble Institute Neurosciences, Université Grenoble Alpes, Grenoble, France
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2
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Maegele M. Effective approaches to address noncompressible torso hemorrhage. Curr Opin Crit Care 2024; 30:202-208. [PMID: 38441108 DOI: 10.1097/mcc.0000000000001141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
PURPOSE OF REVIEW Noncompressible torso hemorrhage (NCTH) is now considered as the major cause of preventable death after both severe military and civilian trauma. Around 20% of all trauma patients still die from uncontrolled exsanguination along with rapidly evolving hemostatic failure. This review highlights the most recent advances in the field and provides an outline for future research directions. RECENT FINDINGS The updated definition of NCTH includes a combination of high-grade anatomical torso injury, hemodynamic instability, urgent need for hemorrhage control and aggressive hemostatic resuscitation. Therapeutic concepts consider the following three aspects: control the bleeding source (close the tap), resuscitate to maintain organ perfusion and restore hemostasis (fill the tank), and increase the body's resistance against ischemia (upgrade the armor). SUMMARY The concepts for the early management of NCTH have substantially evolved over the last decade. The development of new devices and techniques combined with early intervention of hemostatic failure have contributed to more successful resuscitations. Future research needs to refine and validate their potential clinical application.
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Affiliation(s)
- Marc Maegele
- Department for Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center (CMMC), Witten/Herdecke University, Campus Cologne-Merheim
- Institute for Research in Operative Medicine (IFOM), Witten/Herdecke University, Campus Cologne-Merheim, Cologne, Germany
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3
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Skaugen JT, Yazer MH, Sprogøe U. Impact of systematic variations in hematocrit and platelet count on thrombelastometry tissue factor activated assay parameters. Transfusion 2024; 64 Suppl 2:S185-S190. [PMID: 38587089 DOI: 10.1111/trf.17809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 03/02/2024] [Accepted: 03/10/2024] [Indexed: 04/09/2024]
Abstract
BACKGROUND Thromboelastogram testing is increasingly being used to manage patients with massive bleeding. An earlier study found that the test results were influenced by the hematocrit (Hct) and platelet (PLT) concentrations. This study sought to determine if these factors confounded the results of a different manufacturer's thromboelastography testing. METHODS Using freshly collected whole blood from volunteers and stored red blood cells (RBC) and plasma, the whole blood was manipulated to achieve different Hct values and PLT concentrations. Each reconstituted whole blood sample was tested in triplicate on the ROTEM Delta device and the ExTEM results were recorded. RESULTS Many of the ExTEM results varied according to the Hct and PLT concentration. In particular, the ExTEM clot formation time (CFT) was abnormally long when the Hct was 45% and the PLT concentration was ≤75 × 109/L, normalizing only when the PLT count was ≥100 × 109/L. CFT samples with Hct 25% and 35% were also abnormal with low PLT concentrations but normalized at lower PLT concentrations compared to the Hct 45% samples. The ExTEM angle also demonstrated abnormal results when the Hct was 45% and the PLT concentration was ≤50 × 109/L. The ExTEM A10 and maximum clot firmness (MCF) tests tended to also be abnormal when the Hct was between 25% and 45% and the platelet concentrations were below 75 × 109/L. CONCLUSION While thromboelastogram testing is gaining popularity for managing bleeding patients, clinicians should be aware of these confounding factors when making transfusion decisions based on their results.
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Affiliation(s)
- Julie T Skaugen
- Department of Clinical Immunology, Odense University Hospital, Odense, Denmark
| | - Mark H Yazer
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- University of Southern Denmark, Odense, Denmark
| | - Ulrik Sprogøe
- Department of Clinical Immunology, Odense University Hospital, Odense, Denmark
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Dujardin RWG, Kleinveld DJB, van den Brom CE, Geeraedts LMG, Beijer E, Gaarder C, Brohi K, Stanworth S, Johansson PI, Stensballe J, Maegele M, Juffermans NP. Older females have increased mortality after trauma as compared with younger females and males, associated with increased fibrinolysis. J Trauma Acute Care Surg 2024; 96:831-837. [PMID: 38079234 DOI: 10.1097/ta.0000000000004235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
INTRODUCTION Female sex may provide a survival benefit after trauma, possibly attributable to protective effects of estrogen. This study aimed to compare markers of coagulation between male and female trauma patients across different ages. METHODS Secondary analysis of a prospective cohort study that was conducted at six trauma centers. Trauma patients presenting with full trauma team activation were eligible for inclusion. Patients with a penetrating trauma or traumatic brain injury were excluded. Upon hospital arrival, blood was drawn for measurement of endothelial and coagulation markers and for rotational thromboelastometry measurement. Trauma patients were divided into four categories: males younger than 45 years, males 45 years or older, females younger than 45 years, and females 45 years or older. In a sensitivity analysis, patients between 45 and 55 years old were excluded to control for menopausal transitioning. Groups were compared with a Kruskal-Wallis test with Bonferroni correction. A logistic regression was performed to assess whether the independent effect of sex and age on mortality. RESULTS A total of 1,345 patients were available for analysis. Compared with the other groups, mortality was highest in females 45 years or older, albeit not independent from injury severity and shock. In the group of females 45 years or older, there was increased fibrinolysis, demonstrated by increased levels of plasmin-antiplasmin complexes with a concomitant decrease in α2-antiplasmin. Also, a modest decrease in coagulation factors II and X was observed. Fibrinogen levels were comparable between groups. The sensitivity analysis in 1,104 patients demonstrated an independent relationship between female sex, age 55 years or older, and mortality. Rotational thromboelastometry profiles did not reflect the changes in coagulation tests. CONCLUSION Female trauma patients past their reproductive age have an increased risk of mortality compared with younger females and males, associated with augmented fibrinolysis and clotting factor consumption. Rotational thromboelastometry parameters did not reflect coagulation differences between groups. LEVEL OF EVIDENCE Prognostic and Epidemiological; Level III.
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Affiliation(s)
- Romein W G Dujardin
- From the Laboratory of Experimental Intensive Care and Anesthesiology (R.W.G.D., D.J.B.K., C.E.v.d.B., E.B., N.P.J.), and Department of Intensive Care (R.W.G.D., C.E.v.d.B.), Amsterdam UMC, University of Amsterdam; OLVG Hospital, Department of Intensive Care Medicine (R.W.G.D., N.P.J.), Amsterdam; Erasmus MC, Department of Anesthesiology (D.J.B.K.), Rotterdam; Department of Anesthesiology (C.E.v.d.B., E.B.), Amsterdam UMC, Vrije Universiteit Amsterdam; Department of Surgery (L.M.G.G., E.B.), Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands; Department of Traumatology (C.G.), Oslo University Hospital, Oslo, Norway; Trauma Sciences (K.B.), Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom; NHS Blood and Transplant/Oxford University Hospital NHS Trust (S.S.), John Radcliffe Hospital, Oxford, United Kingdom; Radcliffe Department of Medicine (S.S.), University of Oxford, United Kingdom; Department of Anesthesiology and Trauma Center (P.I.J., J.S.), Center for Head and Orthopedics, and Section for Transfusion Medicine (P.I.J., J.S.), Capital Region Blood Bank, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark; and Department of Traumatology and Orthopedic Surgery (M.M.), Cologne-Merheim Medical Center, University of Witten/Herdecke, Cologne, Germany
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5
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Christoffel J, Maegele M. Guidelines in trauma-related bleeding and coagulopathy: an update. Curr Opin Anaesthesiol 2024; 37:110-116. [PMID: 38390904 DOI: 10.1097/aco.0000000000001346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
PURPOSE OF REVIEW The diagnosis and treatment of patients with severe traumatic bleeding and subsequent trauma-induced coagulopathy (TIC) is still inconsistent, although the implementation of standardized algorithms/treatment pathways was repeatedly linked to improved outcome. Various evidence-based guidelines for these patients now exist, three of which have recently been updated. RECENT FINDINGS A synopsis of the three recently updated guidelines for diagnosis and treatment of seriously bleeding trauma patients with TIC is presented: (i) AWMF S3 guideline 'Polytrauma/Seriously Injured Patient Treatment' under the auspices of the German Society for Trauma Surgery; (ii) guideline of the European Society of Anesthesiology and Intensive Care (ESAIC) on the management of perioperative bleeding; and (iii) European guideline on the management of major bleeding and coagulopathy after trauma in its 6th edition (EU-Trauma). SUMMARY Treatment of trauma-related bleeding begins at the scene with local compression, use of tourniquets and pelvic binders and rapid transport to a certified trauma centre. After arrival at the hospital, measures to record, monitor and support coagulation function should be initiated immediately. Surgical bleeding control is carried out according to 'damage control' principles. Modern coagulation management includes individualized treatment based on target values derived from point-of-care viscoelastic test procedures.
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Affiliation(s)
- Jannis Christoffel
- Department for Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center (CMMC)
| | - Marc Maegele
- Department for Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center (CMMC)
- Institute for Research in Operative Medicine (IFOM), Witten/Herdecke University, Campus Cologne-Merheim, Cologne, Germany
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Ghetmiri DE, Venturi AJ, Cohen MJ, Menezes AA. Quick model-based viscoelastic clot strength predictions from blood protein concentrations for cybermedical coagulation control. Nat Commun 2024; 15:314. [PMID: 38182562 PMCID: PMC10770315 DOI: 10.1038/s41467-023-44231-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 12/05/2023] [Indexed: 01/07/2024] Open
Abstract
Cybermedical systems that regulate patient clotting in real time with personalized blood product delivery will improve treatment outcomes. These systems will harness popular viscoelastic assays of clot strength such as thromboelastography (TEG), which help evaluate coagulation status in numerous conditions: major surgery (e.g., heart, vascular, hip fracture, and trauma); liver cirrhosis and transplants; COVID-19; ICU stays; sepsis; obstetrics; diabetes; and coagulopathies like hemophilia. But these measurements are time-consuming, and thus impractical for urgent care and automated coagulation control. Because protein concentrations in a blood sample can be measured in about five minutes, we develop personalized, phenomenological, quick, control-oriented models that predict TEG curve outputs from input blood protein concentrations, to facilitate treatment decisions based on TEG curves. Here, we accurately predict, experimentally validate, and mechanistically justify curves and parameters for common TEG assays (Functional Fibrinogen, Citrated Native, Platelet Mapping, and Rapid TEG), and verify results with trauma patient clotting data.
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Affiliation(s)
- Damon E Ghetmiri
- Department of Mechanical and Aerospace Engineering, University of Florida, 527 Gale Lemerand Drive, Gainesville, FL, 32611-6250, USA
- ASML, 17075 Thornmint Court, San Diego, CA, 92127-2413, USA
| | - Alessia J Venturi
- Department of Mechanical and Aerospace Engineering, University of Florida, 527 Gale Lemerand Drive, Gainesville, FL, 32611-6250, USA
| | - Mitchell J Cohen
- Department of Surgery, University of Colorado Denver, 12631 East 17th Avenue, Mailstop C305, Aurora, CO, 80045-2527, USA
- Center for Combat Medicine and Battlefield (COMBAT) Research, Department of Emergency Medicine, University of Colorado Denver, 12401 East 17th Avenue, Mailstop B215, Aurora, CO, 80045-2589, USA
| | - Amor A Menezes
- Department of Mechanical and Aerospace Engineering, University of Florida, 527 Gale Lemerand Drive, Gainesville, FL, 32611-6250, USA.
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, 1275 Center Drive, Gainesville, FL, 32611-6131, USA.
- Department of Agricultural and Biological Engineering, University of Florida, 1741 Museum Road, Gainesville, FL, 32611-0570, USA.
- Genetics Institute, University of Florida, 2033 Mowry Road, Gainesville, FL, 32610-3610, USA.
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Prethika PA, Mohan G, Shastry S, Balakrishnan JM. Tailoring transfusion strategy using thromboelastogram in goal-directed massive transfusion: Impact on transfusion requirements and clinical outcomes. Asian J Transfus Sci 2024; 18:7-15. [PMID: 39036674 PMCID: PMC11259345 DOI: 10.4103/ajts.ajts_56_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 09/05/2023] [Accepted: 02/04/2024] [Indexed: 07/23/2024] Open
Abstract
BACKGROUND AND OBJECTIVE We compared the overall clinical outcome in formula-based protocol (1:1:1) and thromboelastogram (TEG)-guided goal-based massive transfusion (MT) in the resuscitation of patients with hemorrhagic shock. MATERIALS AND METHODS This was a retro-prospective case-control study conducted over a period of 2 years among the patients who received MT using a 1:1:1 fixed ratio protocol (controls, Group A) and goal-based protocol (cases, Group B) guided through TEG. Patients were matched for the type and severity of the clinical conditions. Utilization of blood components, clinical outcomes, transfusion-related complications, and total mortality rates were compared between the groups. RESULTS There were 113 patients in the formula-based group and 109 patients in the goal-based transfusion group who were matched for injury severity scores. The total blood components utilized were 1867 and 1560, respectively, with a 17.7% reduction associated with the use of TEG. Patients were divided into normal, hypo, and hypercoagulable based on TEG, and a higher transfusion rate was associated with hypocoagulable TEG (942 vs. 610). The prothrombin time, activated partial thromboplastin time, R time, and K time had a significant positive correlation with the need to transfuse more than 20 blood components, whereas platelet count, base excess, alpha angle, MA, and CI had a negative correlation (r = 0.268, P < 0.001). At the end of goal-directed transfusion, 75% of the patients were free of transfusion support (vs. 65.4%) and only 6.9% of the patients had coagulopathy (vs. 31.8%) compared to formula-based resuscitation with a 10% reduction in mortality. CONCLUSION TEG-guided goal-based approach helped to reduce blood component utilization with a reduced incidence of coagulopathy at the end of the MT while improving patient survival.
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Affiliation(s)
- P. A. Prethika
- Department of Immunohematology and Blood Transfusion, Apollo Hospitals, Chennai, Tamil Nadu, India
- Department of Immunohaematology and Blood Transfusion, Kasturba Medical College Manipal, Manipal Academy of Higher Education, Udupi, Karnataka, India
| | - Ganesh Mohan
- Department of Immunohaematology and Blood Transfusion, Kasturba Medical College Manipal, Manipal Academy of Higher Education, Udupi, Karnataka, India
| | - Shamee Shastry
- Department of Immunohaematology and Blood Transfusion, Kasturba Medical College Manipal, Manipal Academy of Higher Education, Udupi, Karnataka, India
| | - Jayaraj Mymbilly Balakrishnan
- Department of Emergency Medicine, Kasturba Medical College Manipal, Manipal Academy of Higher Education, Udupi, Karnataka, India
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Shock-Driven Endotheliopathy in Trauma Patients Is Associated with Leucocyte Derived Extracellular Vesicles. Int J Mol Sci 2022; 23:ijms232415990. [PMID: 36555630 PMCID: PMC9782606 DOI: 10.3390/ijms232415990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/29/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
Endotheliopathy following trauma is associated with poor outcome, but the underlying mechanisms are unknown. This study hypothesized that an increased extracellular vesicle (EV) concentration is associated with endotheliopathy after trauma and that red blood cell (RBC) transfusion could further enhance endotheliopathy. In this post hoc sub study of a multicentre observational trial, 75 trauma patients were stratified into three groups based on injury severity score or shock. In patient plasma obtained at hospital admission and after transfusion of four RBC transfusions, markers for endotheliopathy were measured and EVs were labelled with anti CD41 (platelet EVs), anti CD235a (red blood cell EVs), anti CD45 (leucocyte EVs), anti CD144 (endothelial EVs) or anti CD62e (activated endothelial EVs) and EV concentrations were measured with flow cytometry. Statistical analysis was performed by a Kruskall Wallis test with Bonferroni correction or Wilcoxon rank test for paired data. In patients with shock, syndecan-1 and von Willebrand Factor (vWF) were increased compared to patients without shock. Additionally, patients with shock had increased red blood cell EV and leucocyte EV concentrations compared to patients without shock. Endotheliopathy markers correlated with leucocyte EVs (ρ = 0.263, p = 0.023), but not with EVs derived from other cells. Injury severity score had no relation with EV release. RBC transfusion increased circulating red blood cell EVs but did not impact endotheliopathy. In conclusion, shock is (weakly) associated with EVs from leucocytes, suggesting an immune driven pathway mediated (at least in part) by shock.
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Matkovic E, Lindholm PF. Role of Viscoelastic and Conventional Coagulation Tests for Management of Blood Product Replacement in the Bleeding Patient. Semin Thromb Hemost 2022; 48:785-795. [PMID: 36174609 DOI: 10.1055/s-0042-1756192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
An important aim of viscoelastic testing (VET) is to implement transfusion algorithms based on coagulation test results to help reduce transfusion rates and improve patient outcomes. Establishing a rapid diagnosis and providing timely treatment of coagulopathy is the cornerstone of management of severely bleeding patients in trauma, postpartum hemorrhage, and major surgery. As the nature of acute bleeding and trauma leads to an unstable and tenuous physiologic state, conventional coagulation tests (CCTs) are too slow to diagnose, manage, and also course correct any hemostatic abnormalities that accompany an acute critical illness. Viscoelastic point-of-care tests strongly correlate with results from standard laboratory tests but are designed to enable clinicians to make timely, informed bleeding management decisions when time to intervene is critical. These assays provide an individualized and goal-oriented approach to patient blood management and are increasingly becoming involved in transfusion algorithms. The scope of this review aims to evaluate the current literature on VETs and their impact on actionable outputs in clinical decision making and their relationship to CCT.
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Affiliation(s)
- Eduard Matkovic
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Paul F Lindholm
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
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10
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Bunch CM, Berquist M, Ansari A, McCoy ML, Langford JH, Brenner TJ, Aboukhaled M, Thomas SJ, Peck E, Patel S, Cancel E, Al-Fadhl MD, Zackariya N, Thomas AV, Aversa JG, Greene RB, Seder CW, Speybroeck J, Miller JB, Kwaan HC, Walsh MM. The Choice between Plasma-Based Common Coagulation Tests and Cell-Based Viscoelastic Tests in Monitoring Hemostatic Competence: Not an either-or Proposition. Semin Thromb Hemost 2022; 48:769-784. [PMID: 36174601 DOI: 10.1055/s-0042-1756302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
There has been a significant interest in the last decade in the use of viscoelastic tests (VETs) to determine the hemostatic competence of bleeding patients. Previously, common coagulation tests (CCTs) such as the prothrombin time (PT) and partial thromboplastin time (PTT) were used to assist in the guidance of blood component and hemostatic adjunctive therapy for these patients. However, the experience of decades of VET use in liver failure with transplantation, cardiac surgery, and trauma has now spread to obstetrical hemorrhage and congenital and acquired coagulopathies. Since CCTs measure only 5 to 10% of the lifespan of a clot, these assays have been found to be of limited use for acute surgical and medical conditions, whereby rapid results are required. However, there are medical indications for the PT/PTT that cannot be supplanted by VETs. Therefore, the choice of whether to use a CCT or a VET to guide blood component therapy or hemostatic adjunctive therapy may often require consideration of both methodologies. In this review, we provide examples of the relative indications for CCTs and VETs in monitoring hemostatic competence of bleeding patients.
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Affiliation(s)
- Connor M Bunch
- Department of Emergency Medicine, Henry Ford Hospital, Detroit, Michigan
| | - Margaret Berquist
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Aida Ansari
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Max L McCoy
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Jack H Langford
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Toby J Brenner
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Michael Aboukhaled
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Samuel J Thomas
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Ethan Peck
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Shivani Patel
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Emily Cancel
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Mahmoud D Al-Fadhl
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - Nuha Zackariya
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - Anthony V Thomas
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - John G Aversa
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Ryan B Greene
- Department of Interventional Radiology, St. Joseph Regional Medical Center, Mishawaka, Indiana
| | - Christopher W Seder
- Department of Cardiovascular and Thoracic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Jacob Speybroeck
- Department of Orthopedic Surgery, Case Western Medical Center, Cleveland, Ohio
| | - Joseph B Miller
- Department of Emergency Medicine, Henry Ford Hospital, Detroit, Michigan
| | - Hau C Kwaan
- Division of Hematology and Oncology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Mark M Walsh
- Department of Emergency Medicine, Saint Joseph Regional Medical Center, Mishawaka, Indiana.,Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
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Ghetmiri DE, Cohen MJ, Menezes AA. Personalized modulation of coagulation factors using a thrombin dynamics model to treat trauma-induced coagulopathy. NPJ Syst Biol Appl 2021; 7:44. [PMID: 34876597 PMCID: PMC8651743 DOI: 10.1038/s41540-021-00202-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 11/01/2021] [Indexed: 02/08/2023] Open
Abstract
Current trauma-induced coagulopathy resuscitation protocols use slow laboratory measurements, rules-of-thumb, and clinician gestalt to administer large volumes of uncharacterized, non-tailored blood products. These one-size-fits-all treatment approaches have high mortality. Here, we provide significant evidence that trauma patient survival 24 h after hospital admission occurs if and only if blood protein coagulation factor concentrations equilibrate at a normal value, either from inadvertent plasma-based modulation or from innate compensation. This result motivates quantitatively guiding trauma patient coagulation factor levels while accounting for protein interactions. Toward such treatment, we develop a Goal-oriented Coagulation Management (GCM) algorithm, a personalized and automated ordered sequence of operations to compute and specify coagulation factor concentrations that rectify clotting. This novel GCM algorithm also integrates new control-oriented advancements that we make in this work: an improvement of a prior thrombin dynamics model that captures the coagulation process to control, a use of rapidly-measurable concentrations to help predict patient state, and an accounting of patient-specific effects and limitations when adding coagulation factors to remedy coagulopathy. Validation of the GCM algorithm's guidance shows superior performance over clinical practice in attaining normal coagulation factor concentrations and normal clotting profiles simultaneously.
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Affiliation(s)
- Damon E Ghetmiri
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA
| | - Mitchell J Cohen
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Amor A Menezes
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA.
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA.
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, USA.
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12
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Sayce AC, Neal MD, Leeper CM. Viscoelastic monitoring in trauma resuscitation. Transfusion 2021; 60 Suppl 6:S33-S51. [PMID: 33089933 DOI: 10.1111/trf.16074] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/13/2020] [Accepted: 06/14/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Traumatic injury results in both physical and physiologic insult. Successful care of the trauma patient depends upon timely correction of both physical and biochemical injury. Trauma-induced coagulopathy is a derangement of hemostasis and thrombosis that develops rapidly and can be fatal if not corrected. Viscoelastic monitoring (VEM) assays have been developed to provide rapid, accurate, and relatively comprehensive depictions of an individual's coagulation profile. VEM are increasingly being integrated into trauma resuscitation guidelines to provide dynamic and individualized guidance to correct coagulopathy. STUDY DESIGN AND METHODS We performed a narrative review of the search terms viscoelastic, thromboelastography, thromboelastometry, TEG, ROTEM, trauma, injury, resuscitation, and coagulopathy using PubMed. Particular focus was directed to articles describing algorithms for management of traumatic coagulopathy based on VEM assay parameters. RESULTS Our search identified 16 papers with VEM-guided resuscitation strategies in adult patients based on TEG, 12 such protocols in adults based on ROTEM, 1 protocol for children based on TEG, and 2 protocols for children based on ROTEM. CONCLUSIONS This review presents evidence to support VEM use to detect traumatic coagulopathy, discusses the role of VEM in trauma resuscitation, provides a summary of proposed treatment algorithms, and discusses pending questions in the field.
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Affiliation(s)
- Andrew C Sayce
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Matthew D Neal
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Christine M Leeper
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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Cohen T, Haas T, Cushing MM. The strengths and weaknesses of viscoelastic testing compared to traditional coagulation testing. Transfusion 2021; 60 Suppl 6:S21-S28. [PMID: 33089934 DOI: 10.1111/trf.16073] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 06/05/2020] [Indexed: 12/25/2022]
Abstract
Optimized acute bleeding management requires timely and reliable laboratory testing to detect and diagnose coagulopathies and guide transfusion therapy. Conventional coagulation tests (CCT) are inexpensive with minimal labor requirements, but CCTs may have delayed turnaround times. In addition, abnormal CCT values may not reflect in vivo coagulopathies that require treatment and may lead to overtransfusion. The use of viscoelastic testing (VET) has been rapidly expanding and is recommended by several recent bleeding guidelines. This review is intended to compare CCT to VET, review the strengths and weaknesses of both approaches, and evaluate and summarize the clinical studies that compared CCT-based and VET-based transfusion algorithms. Most studies of CCT vs VET transfusion algorithms favor the use of VET in the management of massively bleeding patients due to reductions in blood product utilization, bleeding, costs, and lengths of stay.
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Affiliation(s)
- Tobias Cohen
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York, USA.,Department of Transfusion Medicine, NewYork-Presbyterian Hospital-Weill Cornell, New York, New York, USA
| | - Thorsten Haas
- Department of Anesthesiology, University Children's Hospital, Zurich, Switzerland
| | - Melissa M Cushing
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York, USA.,Department of Transfusion Medicine, NewYork-Presbyterian Hospital-Weill Cornell, New York, New York, USA
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14
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Kleinveld DJB, Botros L, Maas MAW, Kers J, Aman J, Hollmann MW, Juffermans NP. Bosutinib reduces endothelial permeability and organ failure in a rat polytrauma transfusion model. Br J Anaesth 2021; 126:958-966. [PMID: 33685634 PMCID: PMC8258973 DOI: 10.1016/j.bja.2021.01.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 01/17/2021] [Accepted: 01/17/2021] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Trauma-induced shock is associated with endothelial dysfunction. We examined whether the tyrosine kinase inhibitor bosutinib as an adjunct therapy to a balanced blood component resuscitation strategy reduces trauma-induced endothelial permeability, thereby improving shock reversal and limiting transfusion requirements and organ failure in a rat polytrauma transfusion model. METHODS Male Sprague-Dawley rats (n=13 per group) were traumatised and exsanguinated until a MAP of 40 mm Hg was reached, then randomised to two groups: red blood cells, plasma and platelets in a 1:1:1 ratio with either bosutinib or vehicle. Controls were randomised to sham (median laparotomy, no trauma) with bosutinib or vehicle. Organs were harvested for histology and wet/dry (W/D) weight ratio. RESULTS Traumatic injury resulted in shock, with higher lactate levels compared with controls. In trauma-induced shock, the resuscitation volume needed to obtain a MAP of 60 mm Hg was lower in bosutinib-treated animals (2.8 [2.7-3.2] ml kg-1) compared with vehicle (6.1 [5.1-7.2] ml kg-1, P<0.001). Lactate levels in the bosutinib group were 2.9 [1.7-4.8] mM compared with 6.2 [3.1-14.1] mM in the vehicle group (P=0.06). Bosutinib compared with vehicle reduced lung vascular leakage (W/D ratio of 5.1 [4.6-5.3] vs 5.7 [5.4-6.0] (P=0.046) and lung injury scores (P=0.027). CONCLUSIONS Bosutinib as an adjunct therapy to a balanced transfusion strategy reduced resuscitation volume, improved shock reversal, and reduced vascular leak and organ injury in a rat polytrauma model.
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Affiliation(s)
- Derek J B Kleinveld
- Department of Intensive Care Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands; Laboratory of Experimental Intensive Care and Anesthesiology, Department of Trauma Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands; Department of Trauma Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.
| | - Liza Botros
- Department of Pulmonary Diseases, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - M Adrie W Maas
- Department of Intensive Care Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands; Laboratory of Experimental Intensive Care and Anesthesiology, Department of Trauma Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jesper Kers
- Department of Pathology, Amsterdam Infection & Immunity Institute, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands; Department of Pathology, Leiden University Medical Center, University of Leiden, Leiden, The Netherlands; Van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Amsterdam, The Netherlands; Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard University, Cambridge, MA, USA
| | - Jurjan Aman
- Department of Pulmonary Diseases, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Markus W Hollmann
- Laboratory of Experimental Intensive Care and Anesthesiology, Department of Trauma Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands; Department of Anesthesiology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Nicole P Juffermans
- Laboratory of Experimental Intensive Care and Anesthesiology, Department of Trauma Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands; Department of Intensive Care Medicine, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
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15
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Winearls J, Wullschleger M, Wake E, McQuilten Z, Reade M, Hurn C, Ryan G, Trout M, Walsham J, Holley A, George S, Dyer W, McCullough J, Keijzers G, Fraser J, Presneill J, Campbell D. Fibrinogen Early In Severe Trauma studY (FEISTY): results from an Australian multicentre randomised controlled pilot trial. CRIT CARE RESUSC 2021; 23:32-46. [PMID: 38046391 PMCID: PMC10692540 DOI: 10.51893/2021.1.oa3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: Haemorrhage is a major cause of death in severe trauma. Fibrinogen plays a critical role in maintaining haemostasis in traumatic haemorrhage, and early replacement using fibrinogen concentrate (FC) or cryoprecipitate (Cryo) is recommended by several international trauma guidelines. Limited evidence supports one product over the other, with widespread geographic and institutional variation in practice. Two previous trials have investigated the feasibility of rapid FC administration in severely injured trauma patients, with conflicting results. Objective: To compare the time to fibrinogen replacement using FC or Cryo in severely injured trauma patients with major haemorrhage and hypofibrinogenaemia. Design, setting, patients and interventions: A multicentre controlled pilot trial in which adult trauma patients with haemorrhage were randomly assigned (1:1) to receive FC or Cryo for fibrinogen replacement, guided by FIBTEM A5 (functional fibrinogen assessment at 5 minutes after clot formation, using rotational thromboelastometry). Main outcome measures: The primary outcome was time to commencement of fibrinogen replacement. Secondary outcomes included effects of the intervention on plasma fibrinogen levels and clinical outcomes including transfusion requirements and mortality. Results: Of the 100 randomly assigned patients, 62 were hypofibrinogenaemic and received the intervention (n = 37) or Cryo (n = 25). Median (interquartile range [IQR]) time to delivery of FC was 29 min (23-40 min) compared with 60 min (40-80 min) for Cryo (P = 0.0001). All 62 patients were hypofibrinogenaemic before receiving FC or Cryo (FC: median FIBTEM A5, 8 mm [IQR, 7-9 mm]; Cryo: median FIBTEM A5, 9 mm [IQR, 5-10 mm]). In the FC arm patients received a median of 3 g FC (IQR, 2-4 g), and in the Cryo arm patients received a median of 8 units of Cryo (IQR, 8-14 units). Restoration of fibrinogen levels was achieved in both arms after the intervention. Blood product transfusion, fluid resuscitation and thromboembolic complications were similar in both arms. Overall mortality was 15.3%, with more deaths in the FC arm. Conclusion: Fibrinogen replacement in severely injured trauma patients with major haemorrhage and hypofibrinogenaemia was achieved substantially faster using FC compared with Cryo. Fibrinogen levels increased appropriately using either product. The optimal method for replacing fibrinogen in traumatic haemorrhage is controversial. Our results will inform the design of a larger trial powered to assess patient-centred outcomes.
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Affiliation(s)
- James Winearls
- Intensive Care Unit, Gold Coast University Hospital, Gold Coast, QLD, Australia
- School of Medicine, University of Queensland, Brisbane, QLD, Australia
- School of Medical Sciences, Griffith University, Gold Coast, QLD, Australia
- St Andrews War Memorial Hospital Brisbane, QLD, Australia
| | | | - Elizabeth Wake
- Trauma Service, Gold Coast University Hospital, Gold Coast, QLD, Australia
| | - Zoe McQuilten
- Transfusion Research Unit, Monash University, Melbourne, VIC, Australia
- Monash Health, Melbourne, VIC, Australia
| | - Michael Reade
- Military Medicine and Surgery, Joint Health Command, Australian Defence Force
- Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia
- Royal Brisbane and Women’s Hospital, Brisbane, QLD, Australia
| | - Catherine Hurn
- School of Medicine, University of Queensland, Brisbane, QLD, Australia
- Royal Brisbane and Women’s Hospital, Brisbane, QLD, Australia
| | - Glenn Ryan
- School of Medicine, University of Queensland, Brisbane, QLD, Australia
- Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Melita Trout
- Townsville Hospital, Townsville, QLD, Australia
- Faculty of Medicine, James Cook University, Townsville, QLD, Australia
| | - James Walsham
- School of Medicine, University of Queensland, Brisbane, QLD, Australia
- Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Anthony Holley
- School of Medicine, University of Queensland, Brisbane, QLD, Australia
- Royal Brisbane and Women’s Hospital, Brisbane, QLD, Australia
| | - Shane George
- School of Medicine, University of Queensland, Brisbane, QLD, Australia
- Emergency Department and Children’s Critical Care Service, Gold Coast University Hospital, Gold Coast, QLD, Australia
- Paediatric Critical Care Research Group, Child Health Research Centre, University of Queensland, Brisbane, QLD, Australia
| | | | - James McCullough
- Intensive Care Unit, Gold Coast University Hospital, Gold Coast, QLD, Australia
| | - Gerben Keijzers
- Intensive Care Unit, Gold Coast University Hospital, Gold Coast, QLD, Australia
- School of Medical Sciences, Griffith University, Gold Coast, QLD, Australia
- Faculty of Health Sciences and Medicine, Bond University, Gold Coast, QLD, Australia
| | - John Fraser
- School of Medicine, University of Queensland, Brisbane, QLD, Australia
- Critical Care Research Group, Prince Charles Hospital, Brisbane, QLD, Australia
| | - Jeffrey Presneill
- Intensive Care Unit, Royal Melbourne Hospital, Melbourne, VIC, Australia
- University of Melbourne, Melbourne, VIC, Australia
| | - Don Campbell
- Trauma Service, Gold Coast University Hospital, Gold Coast, QLD, Australia
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16
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Abstract
Physiological fibrinolysis under normal conditions progresses slowly, in contrast to coagulation which is triggered rapidly to stop bleeding and defend against microbial invasion. Methods to detect fibrinolysis abnormalities are less simple and poorly standardized compared with common coagulation tests. Fibrinolysis can be accelerated by preparing euglobulin from plasma to reduce endogenous inhibitors, or by adding plasminogen activators to normal plasma. However, these manipulations complicate interpretation of results and diagnosis of a "fibrinolysis deficit." Many observational studies on antigen levels of fibrinolysis inhibitors, plasminogen activator inhibitor 1 or thrombin-activatable fibrinolysis inhibitor, zymogen or active enzyme have been published. However, conclusions are mixed and there are clear problems with harmonization of results. Viscoelastic methods have the advantage of being rapid and are used as point-of-care tests. They also work with whole blood, allowing the contribution of platelets to be explored. However, there are no agreed protocols for applying viscoelastic methods in acute care for the diagnosis of hyperfibrinolysis or to direct therapy. The emergence of SARS-CoV-2 and the dangers of associated coagulopathy provide new challenges. A common finding in hospitalized patients is high levels of D-dimer fibrin breakdown products, indicative of ongoing fibrinolysis. Well-established problems with D-dimer testing standardization signal that we should be cautious in using results from such tests as prognostic indicators or to target therapies.
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Affiliation(s)
- Colin Longstaff
- Department of Biotherapeutics, National Institute for Biological Standards and Control, South Mimms, Herts, United Kingdom
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17
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The European Perspective on the Management of Acute Major Hemorrhage and Coagulopathy after Trauma: Summary of the 2019 Updated European Guideline. J Clin Med 2021; 10:jcm10020362. [PMID: 33478011 PMCID: PMC7835990 DOI: 10.3390/jcm10020362] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/09/2020] [Accepted: 12/14/2020] [Indexed: 12/16/2022] Open
Abstract
Non-controlled hemorrhage with accompanying trauma-induced coagulopathy (TIC) remains the most common cause of preventable death after multiple injury. Rapid identification followed by aggressive treatment is the key for improved outcomes. Treatment of trauma hemorrhage begins at the scene, with manual compression, the use of tourniquets and (non) commercial pelvic slings, and rapid transfer to an adequate trauma center. Upon hospital admission, coagulation monitoring and support are to be initiated immediately. Bleeding is controlled surgically following damage control principles. Modern coagulation management includes goal-oriented, individualized therapies, guided by point-of-care viscoelastic assays. Idarucizumab can be used as an antidote to the thrombin inhibitor dabigatran, andexanet alpha as an antidote to factor Xa inhibitors. This review summarizes the key recommendations of the 2019 updated European guideline on the management of major bleeding and coagulopathy following trauma. These evidence-based recommendations may form the backbone of algorithms adapted to local logistics and infrastructure.
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Variations and obstacles in the use of coagulation factor concentrates for major trauma bleeding across Europe: outcomes from a European expert meeting. Eur J Trauma Emerg Surg 2021; 48:763-774. [PMID: 33399876 PMCID: PMC7782571 DOI: 10.1007/s00068-020-01563-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 11/19/2020] [Indexed: 12/24/2022]
Abstract
Purpose Trauma is a leading cause of mortality, with major bleeding and trauma-induced coagulopathy (TIC) contributing to negative patient outcomes. Treatments for TIC include tranexamic acid (TXA), fresh frozen plasma (FFP), and coagulation factor concentrates (CFCs, e.g. prothrombin complex concentrates [PCCs] and fibrinogen concentrate [FCH]). Guidelines for TIC management vary across Europe and a clear definition of TIC is still lacking. Methods An advisory board involving European trauma experts was held on 02 February 2019, to discuss clinical experience in the management of trauma-related bleeding and recommendations from European guidelines, focusing on CFC use (mainly FCH). This review summarises the discussions, including TIC definitions, gaps in the guidelines that affect their implementation, and barriers to use of CFCs, with suggested solutions. Results A definition of TIC, which incorporates clinical (e.g. severe bleeding) and laboratory parameters (e.g. low fibrinogen) is suggested. TIC should be treated immediately with TXA and FCH/red blood cells; subsequently, if fibrinogen ≤ 1.5 g/L (or equivalent by viscoelastic testing), treatment with FCH, then PCC (if bleeding continues) is suggested. Fibrinogen concentrate, and not FFP, should be administered as first-line therapy for TIC. Several initiatives may improve TIC management, with improved medical education of major importance; generation of new and stronger data, simplified clinical practice guidance, and improved access to viscoelastic testing are also critical factors. Conclusions Management of TIC is challenging. A standard definition of TIC, together with initiatives to facilitate effective CFC administration, may contribute to improved patient care and outcomes.
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19
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Selby R. "TEG talk": expanding clinical roles for thromboelastography and rotational thromboelastometry. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2020; 2020:67-75. [PMID: 33275705 PMCID: PMC7727516 DOI: 10.1182/hematology.2020000090] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Viscoelastic assays (VEAs) that include thromboelastography and rotational thromboelastometry add value to the investigation of coagulopathies and goal-directed management of bleeding by providing a complete picture of clot formation, strength, and lysis in whole blood that includes the contribution of platelets, fibrinogen, and coagulation factors. Conventional coagulation assays have several limitations, such as their lack of correlation with bleeding and hypercoagulability; their inability to reflect the contribution of platelets, factor XIII, and plasmin during clot formation and lysis; and their slow turnaround times. VEA-guided transfusion algorithms may reduce allogeneic blood exposure during and after cardiac surgery and in the emergency management of trauma-induced coagulopathy and hemorrhage. However, the popularity of VEAs for other indications is driven largely by extrapolation of evidence from cardiac surgery, by the drawbacks of conventional coagulation assays, and by institution-specific preferences. Robust diagnostic studies validating and standardizing diagnostic cutoffs for VEA parameters and randomized trials comparing VEA-guided algorithms with standard care on clinical outcomes are urgently needed. Lack of such studies represents the biggest barrier to defining the role and impact of VEA in clinical care.
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Affiliation(s)
- Rita Selby
- Department of Laboratory Medicine and Pathobiology and Department of Medicine, University of Toronto, Toronto, Ontario, Canada
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20
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Ho D, Chan E, Campbell D, Wake E, Walters K, Bulmer AC, McCullough J, Wullschleger M, Winearls J. Targeted cryoprecipitate transfusion in severe traumatic haemorrhage. Injury 2020; 51:1949-1955. [PMID: 32553426 DOI: 10.1016/j.injury.2020.05.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 05/14/2020] [Accepted: 05/29/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Severe traumatic haemorrhage is the leading cause of death in young adults. Trauma Induced Coagulopathy is a complex and multifactorial phenomenon associated with severe traumatic haemorrhage. Fibrinogen is one of the first coagulation factors to become depleted in TIC and evidence suggests that severely injured trauma patients with hypofibrinogenaemia have poor outcomes. It is postulated that early fibrinogen replacement can improve clinical outcomes. This study investigated cryoprecipitate transfusion in hyopfibrinogeneamic trauma patients. METHODS This retrospective, single center, observational study investigated the use of cryoprecipitate in severely injured trauma patients admitted to an Australian Level I Trauma Centre. The primary outcome was time to administration of cryoprecipitate after identification of hypofibrinogenaemia using ROTEM (FIBTEM A5). Data collected included demographics, ISS, laboratory values of coagulation and blood product usage. RESULTS 71 patients received cryoprecipitate with a median time of 61 minutes [IQR 37-93] from FIBTEM A5 result to initial cryoprecipitate administration. At 24 hours following admission to ED, Clauss Fibrinogen levels increased by 1.30g/L [IQR 0.45-1.85] and FIBTEM A5 assay increased by 8mm [IQR 3.0-11.3]. Changes in both variables were highly significant (p<0.001) and Clauss Fibrinogen versus FIBTEM A5 values showed moderate to strong correlation (R=0.75-0.80). CONCLUSION This study demonstrated that early administration of cryoprecipitate was both feasible and efficacious in fibrinogen replacement in severe traumatic haemorrhage. High-level evidence supporting cryoprecipitate or fibrinogen concentrate replacement with regards to efficacy and feasibility is required to guide future clinical practice. This study provided baseline data to inform the design of further clinical trials investigating fibrinogen replacement in traumatic haemorrhage.
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Affiliation(s)
- Debbie Ho
- Principal House Officer, Department of Surgery, Gold Coast Hospital and Health Service; Lecturer, Griffith University, Australia.
| | - Erick Chan
- Principal House Officer, Department of Surgery, Gold Coast Hospital and Health Service; Lecturer, Griffith University, Australia.
| | - Don Campbell
- Deputy Director, Department of Trauma, Gold Coast Hospital and Health Service; Senior Lecturer, Griffith University, Australia.
| | - Elizabeth Wake
- Research Coordinator, Department of Trauma, Gold Coast Hospital and Health Service, Australia.
| | - Kerin Walters
- Research Coordinator, Intensive Care Unit, Gold Coast Hospital and Health Service, Australia.
| | - Andrew C Bulmer
- Associate Professor, School of Medical Science, Griffith University, Australia.
| | - James McCullough
- Staff Specialist, Intensive Care Unit, Gold Coast Hospital and Health Service, Australia.
| | - Martin Wullschleger
- Director, Department of Trauma and Surgery, Gold Coast Hospital and Health Service, Australia; Professor, Griffith University, Australia.
| | - James Winearls
- Staff Specialist, Intensive Care Unit, Gold Coast Hospital and Health Service, Australia; Consultant Intensivist, St Andrew's War Memorial Hospital, Australia; Senior Lecturer, University of Queensland, Australia.
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21
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22
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Maegele M. Challenges to improving patient outcome following massive transfusion in severe trauma. Expert Rev Hematol 2020; 13:323-330. [PMID: 32075445 DOI: 10.1080/17474086.2020.1733404] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Introduction: Uncontrolled hemorrhage with trauma-induced coagulopathy (TIC) still represents the most common cause of preventable death after trauma. Timely diagnosis and treatment including bleeding control and hemostatic resuscitation to correct TIC are important, as death from exsanguination occurs rapidly. Recognizing who requires an early massive transfusion together with the initiation of corresponding massive transfusion protocols (MTPs) is key to outcome.Areas covered: This expert review summarizes the current state of MT including the activation and termination of MTPs, complications of MT, and strategies for refinement in the administration of blood products in order to avoid harmful over-transfusion.Expert opinion: MTPs should be initiated and continued until normal physiologic parameters are reached and definitive control of bleeding is achieved. Hospitals should develop their own MTPs, guided by evidence, and according to local infrastructure, logistics, needs and patient populations. Massive transfusion, defined as > 10 units of packed red blood cell concentrates (pRBCs) within the first 24 hours of hospital admission, can be life-saving, but is not without complications. MTPs are currently being refined through targeted and early goal-directed approaches which include functional coagulation testing assays to better guide the administration of blood products and hemostatic agents once the patient is stabilized.
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Affiliation(s)
- Marc Maegele
- Department of Traumatology and Orthopedic Surgery, Cologne-Merheim Medical Center (CMMC) Institute for Research in Operative Medicine (IFOM), University Witten-Herdecke, Cologne, Germany
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23
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A comparison between the TEG 6s and TEG 5000 analyzers to assess coagulation in trauma patients. J Trauma Acute Care Surg 2020; 88:279-285. [PMID: 31738314 PMCID: PMC7004476 DOI: 10.1097/ta.0000000000002545] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Supplemental digital content is available in the text. BACKGROUND Trauma-induced coagulopathy is a major driver of mortality following severe injury. Viscoelastic goal-directed resuscitation can reduce mortality after injury. The TEG 5000 system is widely used for viscoelastic testing. However, the TEG 6s system incorporates newer technology, with encouraging results in cardiovascular interventions. The purpose of this study was to validate the TEG 6s system for use in trauma patients. METHODS Multicenter noninvasive observational study for method comparison conducted at 12 US Levels I and II trauma centers. Agreement between the TEG 6s and TEG 5000 systems was examined using citrated kaolin reaction time (CK.R), citrated functional fibrinogen maximum amplitude (CFF.MA), citrated kaolin percent clot lysis at 30 minutes (CK.LY30), citrated RapidTEG maximum amplitude (CRT.MA), and citrated kaolin maximum amplitude (CK.MA) parameters in adults meeting full or limited trauma team criteria. Blood was drawn ≤1 hour after admission. Assays were repeated in duplicate. Reliability (TEG 5000 vs. TEG 6s analyzers) and repeatability (interdevice comparison) was quantified. Linear regression was used to define the relationship between TEG 6s and TEG 5000 devices. RESULTS A total of 475 patients were enrolled. The cohort was predominantly male (68.6%) with a median age of 49 years. Regression line slope estimates (ß) and linear correlation estimates (p) were as follows: CK.R (ß = 1.05, ρ = 0.9), CFF.MA (ß = 0.99, ρ = 0.95), CK.LY30 (ß = 1.01, ρ = 0.91), CRT.MA (TEG 6s) versus CK.MA (TEG 5000) (ß = 1.06, ρ = 0.86) as well as versus CRT.MA (TEG 5000) (ß = 0.93, ρ = 0.93), indicating strong reliability between the devices. Overall, within-device repeatability was better for TEG 6s versus TEG 5000, particularly for CFF.MA and CK.LY30. CONCLUSION The TEG 6s device appears to be highly reliable for use in trauma patients, with close correlation to the TEG 5000 device and equivalent/improved within-device reliability. Given the potential advantages of using the TEG 6s device at the site of care, confirmation of agreement between the devices represents an important advance in diagnostic testing. LEVEL OF EVIDENCE Diagnostic test, level II.
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Rijnhout TWH, Noorman F, Bek A, Zoodsma M, Hoencamp R. Massive transfusion in The Netherlands. Emerg Med J 2019; 37:65-72. [PMID: 31831587 DOI: 10.1136/emermed-2019-208665] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 10/16/2019] [Accepted: 10/25/2019] [Indexed: 12/25/2022]
Abstract
OBJECTIVES Massive transfusion protocols (MTPs) may improve survival in patients with uncontrolled haemorrhage. An MTP was introduced into the Dutch transfusion guidelines in 2011, the ninth edition of the advanced trauma life support course in 2012 and the third version of the European guideline in 2013. This is the first survey of MTPs in Dutch trauma centres. METHODS The aim of the study was to compare MTP strategies in level 1 trauma centres in The Netherlands, and with (inter)national guidelines. A contact in each government assigned level 1 trauma centre in The Netherlands and the Dutch Ministry of Defence was approached to share their MTPs and elucidate their protocol in a survey and oral follow-up interview. RESULTS All 11 level 1 trauma centres responded. The content of the packages and transfusion ratios (red blood cells/plasma/platelets) were 3:3:1, 5:5:1, 5:3:1, 2:3:1, 4:4:1, 5:2:1, 2:2:1 and 4:3:1. Tranexamic acid was used in all centres and an additional dose was administered in eight centres. Fibrinogen was given directly (n=4), with persistent bleeding (n=3), based on Clauss fibrinogen (n=3) or rotational thromboelastometry (n=1). All centres used additional medication in patients in the form of anticoagulants, but their use was ambiguous. CONCLUSION MTPs differed between institutes and guidelines. The discrepancies in transfusion ratios can be explained by (inter)national differences in preparation and volume of blood components and/or interpretation of the '1:1:1' guideline. We recommend updating MTPs every year using the latest guidelines and evaluating the level of evidence for treatment during massive transfusion.
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Affiliation(s)
- Tim W H Rijnhout
- Department of Surgery, Alrijne Hospital Leiderdorp, Leiderdorp, The Netherlands .,Trauma Research Unit Department of Surgery, University Medical Center Rotterdam, Erasmus MC, Rotterdam, The Netherlands
| | - Femke Noorman
- Military Blood Bank, Dutch Ministry of Defence, Utrecht, The Netherlands
| | - Annemarije Bek
- Military Blood Bank, Dutch Ministry of Defence, Utrecht, The Netherlands
| | - Margreet Zoodsma
- Military Blood Bank, Dutch Ministry of Defence, Utrecht, The Netherlands
| | - Rigo Hoencamp
- Department of Surgery, Alrijne Hospital Leiderdorp, Leiderdorp, The Netherlands.,Trauma Research Unit Department of Surgery, University Medical Center Rotterdam, Erasmus MC, Rotterdam, The Netherlands.,Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands.,Defence Healthcare Organization, Ministry of Defence, Utrecht, The Netherlands
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25
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Fenger-Eriksen C, Fries D, David JS, Bouzat P, Lance MD, Grottke O, Spahn DR, Schoechl H, Maegele M. Pre-hospital plasma transfusion: a valuable coagulation support or an expensive fluid therapy? CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2019; 23:238. [PMID: 31262332 PMCID: PMC6604317 DOI: 10.1186/s13054-019-2524-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 06/21/2019] [Indexed: 11/10/2022]
Affiliation(s)
| | - Dietmar Fries
- Department for General and Surgical Critical Care Medicine, Medical University Innsbruck, Innsbruck, Austria
| | - Jean-Stephane David
- Department of Anesthesiology and Critical Care Medicine, Lyon Sud Hospital and Claude Bernard University, Lyon Est School of Medicine, Lyon, France
| | - Pierre Bouzat
- Grenoble Alps Trauma Center, Department of Anesthesiology and Intensive Care Medicine, Grenoble University Hospital, Grenoble, France
| | - Marcus Daniel Lance
- Weill-Cornell Medicine-Qatar, Department of Anesthesiology, ICU & Perioperative Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Oliver Grottke
- Department of Anesthesiology, RWTH Aachen University Hospital, Aachen, Germany
| | - Donat R Spahn
- Institute of Anesthesiology, University and University Hospital of Zurich, Zurich, Switzerland
| | - Herbert Schoechl
- Department of Anesthesiology and Intensive Care Medicine, AUVA Trauma Centre Salzburg, Academic Teaching Hospital of the Paracelsus Medical University, Salzburg, Austria.,Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria
| | - Marc Maegele
- Department of Traumatology and Orthopedic Surgery, Cologne-Merheim Medical Center, Institute for Research in Operative Medicine (IFOM), University Witten-Herdecke, Cologne, Germany.
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Juffermans NP, Wirtz MR, Balvers K, Baksaas‐Aasen K, van Dieren S, Gaarder C, Naess PA, Stanworth S, Johansson PI, Stensballe J, Maegele M, Goslings JC, Brohi K. Towards patient-specific management of trauma hemorrhage: the effect of resuscitation therapy on parameters of thromboelastometry. J Thromb Haemost 2019; 17:441-448. [PMID: 30609290 PMCID: PMC6850475 DOI: 10.1111/jth.14378] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Indexed: 12/16/2022]
Abstract
Essentials The response of thromboelastometry (ROTEM) parameters to therapy is unknown. We prospectively recruited hemorrhaging trauma patients in six level-1 trauma centres in Europe. Blood products and pro-coagulants prevent further derangement of ROTEM results. ROTEM algorithms can be used to treat and monitor trauma induced coagulopathy. SUMMARY: Background Rotational thromboelastometry (ROTEM) can detect trauma-induced coagulopathy (TIC) and is used in transfusion algorithms. The response of ROTEM to transfusion therapy is unknown. Objectives To determine the response of ROTEM profiles to therapy in bleeding trauma patients. Patients/Methods A prospective multicenter study in bleeding trauma patients (receiving ≥ 4 red blood cell [RBC] units) was performed. Blood was drawn in the emergency department, after administration of 4, 8 and 12 RBC units and 24 h post-injury. The response of ROTEM to plasma, platelets (PLTs), tranexamic acid (TXA) and fibrinogen products was evaluated in the whole cohort as well as in the subgroup of patients with ROTEM values indicative of TIC. Results Three hundred and nine bleeding and shocked patients were included. A mean dose of 3.8 g of fibrinogen increased FIBTEM CA5 by 5.2 mm (IQR: 4.1-6.3 mm). TXA administration decreased lysis by 5.4% (4.3-6.5%). PLT transfusion prevented further derangement of parameters of clot formation. The effect of PLTs on EXTEM ca5 values was more pronounced in patients with a ROTEM value indicative of TIC than in the whole cohort. Plasma transfusion decreased EXTEM clotting time by 3.1 s (- 10 s to 3.9 s) in the whole cohort and by 10.6 s (- 45 s to 24 s) in the subgroup of patients with a ROTEM value indicative of TIC. Conclusion The effects of therapy on ROTEM values were small, but prevented further derangement of test results. In patients with ROTEM values indicative of TIC, the efficacy of PLTs and plasma in correcting deranged ROTEM parameters is possibly more robust.
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Affiliation(s)
- Nicole P. Juffermans
- Department of Intensive Care MedicineAmsterdam UMCAcademic Medical CenterAmsterdamthe Netherlands
| | - Mathijs R. Wirtz
- Department of Intensive Care MedicineAmsterdam UMCAcademic Medical CenterAmsterdamthe Netherlands
| | - Kirsten Balvers
- Department of Intensive Care MedicineAmsterdam UMCAcademic Medical CenterAmsterdamthe Netherlands
- Trauma UnitDepartment of SurgeryAcademic Medical CenterAmsterdamthe Netherlands
| | - Kjersti Baksaas‐Aasen
- Department of TraumatologyOslo University HospitalOsloNorway
- Department of AnesthesiologyOslo University HospitalOsloNorway
| | - Susan van Dieren
- Department of Intensive Care MedicineAmsterdam UMCAcademic Medical CenterAmsterdamthe Netherlands
| | | | - Paul A. Naess
- Department of TraumatologyOslo University HospitalOsloNorway
| | - Simon Stanworth
- NHS Blood and Transplant/Oxford University Hospitals NHS TrustJohn Radcliffe HospitalOxfordUK
- Radcliffe Department of MedicineUniversity of OxfordOxfordUK
| | - Pär I. Johansson
- Department of Anesthesiology and Trauma CenterCenter for Head and Orthopedics, and Section for Transfusion MedicineCapital Region Blood BankCopenhagen University Hospital RigshospitaletCopenhagenDenmark
| | - Jakob Stensballe
- Department of Anesthesiology and Trauma CenterCenter for Head and Orthopedics, and Section for Transfusion MedicineCapital Region Blood BankCopenhagen University Hospital RigshospitaletCopenhagenDenmark
| | - Marc Maegele
- Department for Traumatology and Orthopedic SurgeryCologne‐Merheim Medical CenterUniversity of Witten/HerdeckeCologneGermany
| | - J. C. Goslings
- Trauma UnitDepartment of SurgeryAcademic Medical CenterAmsterdamthe Netherlands
| | - Karim Brohi
- Trauma SciencesBlizard InstituteBarts and the London School of Medicine and DentistryQueen Mary University of LondonLondonUK
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