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Băetu AE, Mirea LE, Cobilinschi C, Grințescu IC, Grințescu IM. Platelet Contribution and Endothelial Activation and Stress Index-Potential Mortality Predictors in Traumatic Brain Injury. Int J Mol Sci 2024; 25:7763. [PMID: 39063005 PMCID: PMC11276696 DOI: 10.3390/ijms25147763] [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: 06/08/2024] [Revised: 07/09/2024] [Accepted: 07/14/2024] [Indexed: 07/28/2024] Open
Abstract
Coagulopathy and traumatic brain injury (TBI) are complexly intertwined. In isolated TBI, coagulopathy may contribute to hemorrhagic lesion development, progression, or recurrence, as it may lead to a particular pattern of coagulopathy called TBI-induced coagulopathy (TBI-IC). We performed a retrospective and descriptive evaluation of 63 patients admitted to the Emergency Clinical Hospital Bucharest with the diagnosis of moderate/severe brain injury. In addition to demographic data, all included patients had a complete paraclinical evaluation that included rotational thromboelastometric (ROTEM) blood-clot analysis. The platelet component (PLTEM) and the endotheliopathy activation and stress index score (EASIX) were calculated. These parameters were presented comparatively according to survival at 30 days and helped define the two study groups: survivors and non-survivors at 30 days. The contribution of platelets to clot strength is derived from maximum clot elasticity (MCE) and maximum clot firmness (MCF). MCE is defined as (MCF × 100)/(100 - MCF), and PLTEM is defined as EXTEM MCE-FIBTEM MCE. EASIX is a novel biomarker recently studied in TBI patients, calculated according to the following formula: lactate dehydrogenase (U/L) × creatinine (mg/dL)/platelets (109 cells/L). Regarding the demographic data, there were no significant differences between the survivors and non-survivors. All ROTEM parameters related to clot amplitude (A5, A10, A20, MCF in EXTEM and FIBTEM channels) were higher in the group of patients who survived. Also, PLTEM was decreased in the group of deceased patients (89.71 ± 22.86 vs. 132.3 ± 16.56 p < 0.0001). The cut-off point determined with the ROC curve is 114.10, with a sensitivity of 94.74% and a specificity of 93.18%, for the detection of the negative prognosis (death at 30 days). The EASIX score was significantly higher in the patients who survived the traumatic event, with a median difference value of 1.15 (p < 0.0001). The ROC analysis of this biomarker highlights a cut-off point of 2.12, with a sensitivity of 88.64% and a specificity of 94.74% (AUC = 0.95, p < 0.0001), for the prediction of mortality. The comparative analysis of the two studied markers was performed using the Cox proportional hazard ratio and highlighted the greater influence that PLTEM has on survival time (b value = -0.05, p < 0.0001) compared to EASIX (b value = 0.49, p = 0.0026). The present retrospective study indicates the potential of the TBI-IC reflecting parameters PLTEM and EASIX as markers of mortality prognosis. Larger prospective studies are needed to confirm their combined prognostic value and use in decision-making and reduction in the burden of disease by adequate allocation of resources in a personalized and timely manner.
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Affiliation(s)
- Alexandru Emil Băetu
- Department of Anesthesiology and Intensive Care II, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania; (A.E.B.); (I.M.G.)
- Department of Anesthesiology and Intensive Care, Grigore Alexandrescu Clinical Emergency Hospital for Children, 011743 Bucharest, Romania
| | - Liliana Elena Mirea
- Department of Anesthesiology and Intensive Care II, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania; (A.E.B.); (I.M.G.)
- Department of Anesthesiology and Intensive Care, Clinical Emergency Hospital Bucharest, 014461 Bucharest, Romania
| | - Cristian Cobilinschi
- Department of Anesthesiology and Intensive Care II, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania; (A.E.B.); (I.M.G.)
- Department of Anesthesiology and Intensive Care, Clinical Emergency Hospital Bucharest, 014461 Bucharest, Romania
| | | | - Ioana Marina Grințescu
- Department of Anesthesiology and Intensive Care II, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania; (A.E.B.); (I.M.G.)
- Department of Anesthesiology and Intensive Care, Clinical Emergency Hospital Bucharest, 014461 Bucharest, Romania
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Rimaitis M, Cechanovičiūtė V, Bilskienė D, Balčiūnienė N, Vilcinis R, Rimaitis K, Macas A. Dynamic Changes of Hemostasis in Patients with Traumatic Brain Injury Undergoing Craniotomy: Association with in-Hospital Mortality. Neurocrit Care 2023; 38:714-725. [PMID: 36471184 DOI: 10.1007/s12028-022-01639-4] [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: 08/28/2022] [Accepted: 10/31/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Traumatic brain injury (TBI) induces complex systemic hemostatic alterations associated with secondary brain damage and death. We specifically investigated perioperative changes of hemostasis in patients with isolated TBI undergoing major neurosurgery and searched for their influence on outcome. METHODS Serial analysis (four time points, T0-T3) of conventional coagulation assay and rotational thromboelastometry data acquired during 72 h from admission of 68 patients who underwent craniotomy to remove hematoma and/or to decompress the brain was performed. The primary outcome was in-hospital mortality. Secondary outcomes were the prevalence of hypocoagulation and increased clotting activity, coagulation parameters between survivors and nonsurvivors, and cutoff values of coagulation parameters predictive of mortality. RESULTS Overall mortality was 22%. The prevalence of hypocoagulation according to rotational thromboelastometry decreased from 35.8% (T0) to 15.9% (T3). Lower fibrinogen levels, hyperfibrinolysis and fibrinolysis shutdown in the early period (T0-T1) following TBI were associated with higher mortality. Optimal cutoff values were identified: fibrin polymerization thromboelastometry (FIBTEM) clot amplitude at 10 min after clotting time ≤ 13 mm at T0 and FIBTEM clot amplitude at 10 min after clotting time ≤ 16.5 mm at T1 increased the odds of death by 6.0 (95% confidence interval [CI] 1.54-23.13, p = 0.010) and 9.7 (95% CI 2.06-45.36, p = 0.004), respectively. FIBTEM maximum clot firmness ≤ 14.5 mm at T0 and FIBTEM maximum clot firmness ≤ 18.5 mm at T1 increased the odds of death by 6.3 (95% CI 1.56-25.69, p = 0.010) and 9.1 (95% CI 1.88-44.39, p = 0.006). Fibrinogen < 3 g/L on postoperative day 1 (T1) was associated with a 9.5-fold increase of in-hospital mortality (95% CI 1.72-52.98, p = 0.01). Increased clotting activity was not associated with mortality. CONCLUSIONS Rotational thromboelastometry adds important information for identifying patients with TBI at increased risk of death. Early fibrinogen-related coagulation disorders are associated with mortality of patients with TBI undergoing major neurosurgical procedures. Maintenance of higher fibrinogen levels might be necessary for neurosurgical patients with acute TBI.
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Affiliation(s)
- Marius Rimaitis
- Lithuanian University of Health Sciences, Mickeviciaus Str. 9, 44307, Kaunas, Lithuania.
- Clinic of Anesthesiology, Lithuanian University of Health Sciences, Kaunas, Lithuania.
| | - Vaiva Cechanovičiūtė
- Lithuanian University of Health Sciences, Mickeviciaus Str. 9, 44307, Kaunas, Lithuania
| | - Diana Bilskienė
- Lithuanian University of Health Sciences, Mickeviciaus Str. 9, 44307, Kaunas, Lithuania
- Clinic of Anesthesiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Neringa Balčiūnienė
- Lithuanian University of Health Sciences, Mickeviciaus Str. 9, 44307, Kaunas, Lithuania
- Clinic of Neurosurgery, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Rimantas Vilcinis
- Lithuanian University of Health Sciences, Mickeviciaus Str. 9, 44307, Kaunas, Lithuania
- Clinic of Neurosurgery, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Kęstutis Rimaitis
- Lithuanian University of Health Sciences, Mickeviciaus Str. 9, 44307, Kaunas, Lithuania
- Clinic of Anesthesiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Andrius Macas
- Lithuanian University of Health Sciences, Mickeviciaus Str. 9, 44307, Kaunas, Lithuania
- Clinic of Anesthesiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
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3
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Bunch CM, Chang E, Moore EE, Moore HB, Kwaan HC, Miller JB, Al-Fadhl MD, Thomas AV, Zackariya N, Patel SS, Zackariya S, Haidar S, Patel B, McCurdy MT, Thomas SG, Zimmer D, Fulkerson D, Kim PY, Walsh MR, Hake D, Kedar A, Aboukhaled M, Walsh MM. SHock-INduced Endotheliopathy (SHINE): A mechanistic justification for viscoelastography-guided resuscitation of traumatic and non-traumatic shock. Front Physiol 2023; 14:1094845. [PMID: 36923287 PMCID: PMC10009294 DOI: 10.3389/fphys.2023.1094845] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 02/07/2023] [Indexed: 03/03/2023] Open
Abstract
Irrespective of the reason for hypoperfusion, hypocoagulable and/or hyperfibrinolytic hemostatic aberrancies afflict up to one-quarter of critically ill patients in shock. Intensivists and traumatologists have embraced the concept of SHock-INduced Endotheliopathy (SHINE) as a foundational derangement in progressive shock wherein sympatho-adrenal activation may cause systemic endothelial injury. The pro-thrombotic endothelium lends to micro-thrombosis, enacting a cycle of worsening perfusion and increasing catecholamines, endothelial injury, de-endothelialization, and multiple organ failure. The hypocoagulable/hyperfibrinolytic hemostatic phenotype is thought to be driven by endothelial release of anti-thrombogenic mediators to the bloodstream and perivascular sympathetic nerve release of tissue plasminogen activator directly into the microvasculature. In the shock state, this hemostatic phenotype may be a counterbalancing, yet maladaptive, attempt to restore blood flow against a systemically pro-thrombotic endothelium and increased blood viscosity. We therefore review endothelial physiology with emphasis on glycocalyx function, unique biomarkers, and coagulofibrinolytic mediators, setting the stage for understanding the pathophysiology and hemostatic phenotypes of SHINE in various etiologies of shock. We propose that the hyperfibrinolytic phenotype is exemplified in progressive shock whether related to trauma-induced coagulopathy, sepsis-induced coagulopathy, or post-cardiac arrest syndrome-associated coagulopathy. Regardless of the initial insult, SHINE appears to be a catecholamine-driven entity which early in the disease course may manifest as hyper- or hypocoagulopathic and hyper- or hypofibrinolytic hemostatic imbalance. Moreover, these hemostatic derangements may rapidly evolve along the thrombohemorrhagic spectrum depending on the etiology, timing, and methods of resuscitation. Given the intricate hemochemical makeup and changes during these shock states, macroscopic whole blood tests of coagulative kinetics and clot strength serve as clinically useful and simple means for hemostasis phenotyping. We suggest that viscoelastic hemostatic assays such as thromboelastography (TEG) and rotational thromboelastometry (ROTEM) are currently the most applicable clinical tools for assaying global hemostatic function-including fibrinolysis-to enable dynamic resuscitation with blood products and hemostatic adjuncts for those patients with thrombotic and/or hemorrhagic complications in shock states.
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Affiliation(s)
- Connor M Bunch
- Department of Emergency Medicine, Henry Ford Hospital, Detroit, MI, United States.,Department of Internal Medicine, Henry Ford Hospital, Detroit, MI, United States
| | - Eric Chang
- Department of Medical Education, Indiana University School of Medicine, Notre Dame Campus, South Bend, IN, United States
| | - Ernest E Moore
- Department of Surgery, Ernest E. Moore Shock Trauma Center at Denver Health, University of Colorado, Denver, CO, United States
| | - Hunter B Moore
- Department of Surgery, Ernest E. Moore Shock Trauma Center at Denver Health, University of Colorado, Denver, CO, United States.,Department of Transplant Surgery, Denver Health and University of Colorado Health Sciences Center, Denver, CO, United States
| | - Hau C Kwaan
- Division of Hematology and Oncology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Joseph B Miller
- Department of Emergency Medicine, Henry Ford Hospital, Detroit, MI, United States.,Department of Internal Medicine, Henry Ford Hospital, Detroit, MI, United States
| | - Mahmoud D Al-Fadhl
- Department of Medical Education, Indiana University School of Medicine, Notre Dame Campus, South Bend, IN, United States
| | - Anthony V Thomas
- Department of Medical Education, Indiana University School of Medicine, Notre Dame Campus, South Bend, IN, United States
| | - Nuha Zackariya
- Department of Medical Education, Indiana University School of Medicine, Notre Dame Campus, South Bend, IN, United States
| | - Shivani S Patel
- Department of Emergency Medicine, Henry Ford Hospital, Detroit, MI, United States
| | - Sufyan Zackariya
- Department of Emergency Medicine, Henry Ford Hospital, Detroit, MI, United States
| | - Saadeddine Haidar
- Department of Emergency Medicine, Henry Ford Hospital, Detroit, MI, United States
| | - Bhavesh Patel
- Division of Critical Care, Department of Medicine, Mayo Clinic Arizona, Phoenix, AZ, United States
| | - Michael T McCurdy
- Division of Pulmonary and Critical Care, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Scott G Thomas
- Department of Trauma Surgery, Memorial Leighton Trauma Center, South Bend, IN, United States
| | - Donald Zimmer
- Department of Trauma Surgery, Memorial Leighton Trauma Center, South Bend, IN, United States
| | - Daniel Fulkerson
- Department of Trauma Surgery, Memorial Leighton Trauma Center, South Bend, IN, United States
| | - Paul Y Kim
- Department of Medicine, McMaster University, Hamilton, ON, Canada.,Thrombosis and Atherosclerosis Research Institute, Hamilton, ON, Canada
| | | | - Daniel Hake
- Departments of Emergency Medicine and Internal Medicine, Saint Joseph Regional Medical Center, Mishawaka, IN, United States
| | - Archana Kedar
- Departments of Emergency Medicine and Internal Medicine, Saint Joseph Regional Medical Center, Mishawaka, IN, United States
| | - Michael Aboukhaled
- Departments of Emergency Medicine and Internal Medicine, Saint Joseph Regional Medical Center, Mishawaka, IN, United States
| | - Mark M Walsh
- Department of Medical Education, Indiana University School of Medicine, Notre Dame Campus, South Bend, IN, United States.,Departments of Emergency Medicine and Internal Medicine, Saint Joseph Regional Medical Center, Mishawaka, IN, United States
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Lubnin AY, Israelyan LA, Moshkin AV. [Hemostatic disorders in neurosurgical patients: diagnostics and correction]. ZHURNAL VOPROSY NEIROKHIRURGII IMENI N. N. BURDENKO 2023; 87:98-110. [PMID: 37011335 DOI: 10.17116/neiro20238702198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
The authors analyzed the main causes of perioperative hemostatic disorders in neurosurgical patients. The problem of preoperative hemostatic screening, intraoperative and postoperative factors contributing to hemostatic disorders are considered. The authors also discuss the methods for correction of hemostatic disorders.
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Affiliation(s)
- A Yu Lubnin
- Burdenko Neurosurgical Center, Moscow, Russia
| | | | - A V Moshkin
- Burdenko Neurosurgical Center, Moscow, Russia
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5
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Hvas CL, Hvas AM. Viscoelastic Testing in the Clinical Management of Subarachnoid Hemorrhage and Intracerebral Hemorrhage. Semin Thromb Hemost 2022; 48:828-841. [PMID: 36100233 DOI: 10.1055/s-0042-1756191] [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
Subarachnoid hemorrhage (SAH) and intracerebral hemorrhage (ICH) are both debilitating and life-threatening incidents calling for immediate action and treatment. This review focuses on the applicability of viscoelastic testing (rotational thromboelastometry or thromboelastography [TEG]) in the management of SAH and ICH. A systematic literature search was performed in PubMed and EMBASE. Studies including patients with SAH or ICH, in which viscoelastic testing was performed, were identified. In total, 24 studies were included for analysis, and further subdivided into studies on SAH patients investigated prior to stenting or coiling (n = 12), ICH patients (n = 8) and studies testing patients undergoing stenting or coiling, or ischemic stroke patients undergoing thrombolysis or thrombectomy and developing ICH as a complication (n = 5). SAH patients had increased clot firmness, and this was associated with a higher degree of early brain injury and higher Hunt-Hess score. SAH patients with delayed cerebral ischemia had higher clot firmness than patients not developing delayed cerebral ischemia. ICH patients showed accelerated clot formation and increased clot firmness in comparison to healthy controls. Patients with hematoma expansion had longer clot initiation and lower platelet aggregation than patients with no hematoma expansion. During stent procedures for SAH, adjustment of antiplatelet therapy according to TEG platelet mapping did not change prevalence of major bleeding, thromboembolic events, or functional outcome. Viscoelastic testing prior to thrombolysis showed conflicting results in predicting ICH as complication. In conclusion, viscoelastic testing suggests hypercoagulation following SAH and ICH. Further investigation of the predictive value of increased clot firmness in SAH seems relevant. In ICH, the prediction of hematoma expansion and ICH as a complication to thrombolysis might be clinically relevant.
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Affiliation(s)
- Christine Lodberg Hvas
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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Association of Thromboelastography with Progression of Hemorrhagic Injury in Children with Traumatic Brain Injury. Neurocrit Care 2022; 38:326-334. [PMID: 35896767 DOI: 10.1007/s12028-022-01562-8] [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: 04/18/2022] [Accepted: 06/16/2022] [Indexed: 10/16/2022]
Abstract
INTRODUCTION Progression of hemorrhagic injury (PHI) in children with traumatic brain injury portends poor outcomes. The association between thromboelastography (TEG), functional coagulation assays, and PHI is not well characterized in children. METHODS This was a retrospective cohort study of children presenting with PHI at a pediatric level I academic trauma center from 2015 to 2020. Inclusion criteria were as follows: age less than 18 years, intracranial hemorrhage on admission head computed tomography scan, and admission rapid TEG assay and conventional coagulation tests. PHI was defined by the following radiographic criteria: any expansion of or new intracranial hemorrhage on subsequent head computed tomography scan. Rapid TEG values included Activated Clotting Time (ACT), alpha angle, maximum amplitude, and lysis at 30 min. Wilcoxon rank-sum test was used to assess baseline differences between groups with PHI and without PHI, including laboratory assays. Univariate analysis was performed to examine the association between variables of interest and PHI. Patients were dichotomized on the basis of this cut point to generate a "low ACT" group and a "high ACT" group. These variables were included in a multivariable logistic regression model to determine independent association with traumatic brain injury progression. RESULTS In total, 219 patients met criteria for analysis. In this cohort, the median (interquartile range [IQR]) age = 6 (2-12) years, median (IQR) Injury Severity Score = 21 (11-27), 68% were boys, and 69% sustained blunt injury. The rate of PHI was 25% (54). Median (IQR) time to PHI was 1 (0-4) days. Children with PHI had a higher Injury Severity Score (p < 0.001), lower Glasgow Coma Scale (p < 0.001), greater incidence of shock (p = 0.04), and lower admission hemoglobin (p = 0.02) compared with those without PHI. Children with PHI had a higher International Normalized Ratio (INR) and longer TEG-ACT; other TEG values (alpha angle, maximum amplitude, and lysis at 30 min) were not associated with PHI. In the logistic regression model accounting for other covariates associated with PHI, elevated ACT remained an independent predictor of progression (odds ratio = 2.25, 95% confidence interval 1.09-4.66; p = 0.03; area under the receiver operating characteristic curve = 0.76). After adjusting for confounders, INR fell out of the model and was not an independent predictor of progression (odds ratio = 1.32, 95% confidence interval 0.60-2.93; p = 0.49). CONCLUSIONS Although INR was elevated in children with PHI and has been associated with poor clinical outcomes, only admission TEG-ACT was independently associated with PHI. Further study is warranted to determine whether TEG-ACT reflects an actionable therapeutic target.
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Shammassian BH, Ronald A, Smith A, Sajatovic M, Mangat HS, Kelly ML. Viscoelastic Hemostatic Assays and Outcomes in Traumatic Brain Injury: A Systematic Literature Review. World Neurosurg 2022; 159:221-236.e4. [PMID: 34844010 DOI: 10.1016/j.wneu.2021.10.180] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND Coagulopathy in traumatic brain injury (TBI) occurs frequently and is associated with poor outcomes. Conventional coagulation assays (CCA) traditionally used to diagnose coagulopathy are often not time sensitive and do not assess complete hemostatic function. Viscoelastic hemostatic assays (VHAs) including thromboelastography and rotational thromboelastography provide a useful rapid and comprehensive point-of-care alternative for identifying coagulopathy, which is of significant consequence in patients with TBI with intracranial hemorrhage. METHODS A systematic review was performed in accordance with PRISMA guidelines to identify studies comparing VHA with CCA in adult patients with TBI. The following differences in outcomes were assessed based on ability to diagnose coagulopathy: mortality, need for neurosurgical intervention, and progression of traumatic intracranial hemorrhage (tICH). RESULTS Abnormal reaction time (R time), maximum amplitude, and K value were associated with increased mortality in certain studies but not all studies. This association was reflected across studies using different statistical parameters with different outcome definitions. An abnormal R time was the only VHA parameter found to be associated with the need for neurosurgical intervention in 1 study. An abnormal R time was also the only VHA parameter associated with progression of tICH. Overall, many studies also reported abnormal CCAs, mainly activated partial thromboplastin time, to be associated with poor outcomes. CONCLUSIONS Given the heterogenous nature of the available evidence including methodology and study outcomes, the comparative difference between VHA and CCA in predicting rates of neurosurgical intervention, tICH progression, or mortality in patients with TBI remains inconclusive.
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Affiliation(s)
- Berje H Shammassian
- Department of Neurosurgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA; Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.
| | - Andrew Ronald
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Arvin Smith
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Martha Sajatovic
- Neurological and Behavioral Outcomes Center, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Halinder S Mangat
- Department of Neurology, Division of Neurocritical Care, University of Kansas Medical Center Kansas City, Kansas, USA
| | - Michael L Kelly
- Metrohealth Medical Center, Department of Neurological Surgery, Cleveland, Ohio, USA
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Wang Z, Mou Y, Li H, Yang R, Jia Y. Impact of Early Intravenous Haemostatic Drugs on Brain Haemorrhage Patients and Their Image Segmentation Based on RGB-D Images. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:4608648. [PMID: 35035838 PMCID: PMC8759877 DOI: 10.1155/2022/4608648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/08/2021] [Accepted: 12/11/2021] [Indexed: 11/19/2022]
Abstract
Cerebral haemorrhage is a serious subtype of stroke, with most patients experiencing short-term haematoma enlargement leading to worsening neurological symptoms and death. The main hemostatic agents currently used for cerebral haemorrhage are antifibrinolytics and recombinant coagulation factor VIIa. However, there is no clinical evidence that patients with cerebral haemorrhage can benefit from hemostatic treatment. We provide an overview of the mechanisms of haematoma expansion in cerebral haemorrhage and the progress of research on commonly used hemostatic drugs. To improve the semantic segmentation accuracy of cerebral haemorrhage, a segmentation method based on RGB-D images is proposed. Firstly, the parallax map was obtained based on a semiglobal stereo matching algorithm and fused with RGB images to form a four-channel RGB-D image to build a sample library. Secondly, the networks were trained with 2 different learning rate adjustment strategies for 2 different structures of convolutional neural networks. Finally, the trained networks were tested and compared for analysis. The 146 head CT images from the Chinese intracranial haemorrhage image database were divided into a training set and a test set using the random number table method. The validation set was divided into four methods: manual segmentation, algorithmic segmentation, the exact Tada formula, and the traditional Tada formula to measure the haematoma volume. The manual segmentation was used as the "gold standard," and the other three algorithms were tested for consistency. The results showed that the algorithmic segmentation had the lowest percentage error of 15.54 (8.41, 23.18) % compared to the Tada formula method.
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Affiliation(s)
- Zhenzhen Wang
- Department of Neurology, Gucheng County Hospital, Hengshui 253800, China
| | - Yating Mou
- Department of Neurology, Gucheng County Hospital, Hengshui 253800, China
| | - Hao Li
- Department of Neurology, Gucheng County Hospital, Hengshui 253800, China
| | - Rui Yang
- Department of Neurology, Gucheng County Hospital, Hengshui 253800, China
| | - Yanxun Jia
- Department of Neurology, Gucheng County Hospital, Hengshui 253800, China
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Chen T, Chen S, Wu Y, Chen Y, Wang L, Liu J. A predictive model for postoperative progressive haemorrhagic injury in traumatic brain injuries. BMC Neurol 2022; 22:16. [PMID: 34996389 PMCID: PMC8740436 DOI: 10.1186/s12883-021-02541-w] [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: 10/18/2021] [Accepted: 12/13/2021] [Indexed: 12/01/2022] Open
Abstract
Background Progressive haemorrhagic injury after surgery in patients with traumatic brain injury often results in poor patient outcomes. This study aimed to develop and validate a practical predictive tool that can reliably estimate the risk of postoperative progressive haemorrhagic injury (PHI) in patients with traumatic brain injury (TBI). Methods Data from 645 patients who underwent surgery for TBI between March 2018 and December 2020 were collected. The outcome was postoperative intracranial PHI, which was assessed on postoperative computed tomography. The least absolute shrinkage and selection operator (LASSO) regression model, univariate analysis, and Delphi method were applied to select the most relevant prognostic predictors. We combined conventional coagulation test (CCT) data, thromboelastography (TEG) variables, and several predictors to develop a predictive model using binary logistic regression and then presented the results as a nomogram. The predictive performance of the model was assessed with calibration and discrimination. Internal validation was assessed. Results The signature, which consisted of 11 selected features, was significantly associated with intracranial PHI (p < 0.05, for both primary and validation cohorts). Predictors in the prediction nomogram included age, S-pressure, D-pressure, pulse, temperature, reaction time, PLT, prothrombin time, activated partial thromboplastin time, FIB, and kinetics values. The model showed good discrimination, with an area under the curve of 0.8694 (95% CI, 0.8083–0.9304), and good calibration. Conclusion This model is based on a nomogram incorporating CCT and TEG variables, which can be conveniently derived at hospital admission. It allows determination of this individual risk for postoperative intracranial PHI and will facilitate a timely intervention to improve outcomes.
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Affiliation(s)
- Tiange Chen
- Department of Neurosurgery, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, Hunan, 410008, People's Republic of China
| | - Siming Chen
- Department of Neurosurgery, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, Hunan, 410008, People's Republic of China
| | - Yun Wu
- Department of Neurosurgery, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, Hunan, 410008, People's Republic of China
| | - Yilei Chen
- Department of Neurosurgery, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, Hunan, 410008, People's Republic of China
| | - Lei Wang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jinfang Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, Hunan, 410008, People's Republic of China.
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Bradbury JL, Thomas SG, Sorg NR, Mjaess N, Berquist MR, Brenner TJ, Langford JH, Marsee MK, Moody AN, Bunch CM, Sing SR, Al-Fadhl MD, Salamah Q, Saleh T, Patel NB, Shaikh KA, Smith SM, Langheinrich WS, Fulkerson DH, Sixta S. Viscoelastic Testing and Coagulopathy of Traumatic Brain Injury. J Clin Med 2021; 10:jcm10215039. [PMID: 34768556 PMCID: PMC8584585 DOI: 10.3390/jcm10215039] [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: 09/30/2021] [Revised: 10/24/2021] [Accepted: 10/27/2021] [Indexed: 12/14/2022] Open
Abstract
A unique coagulopathy often manifests following traumatic brain injury, leading the clinician down a difficult decision path on appropriate prophylaxis and therapy. Conventional coagulation assays—such as prothrombin time, partial thromboplastin time, and international normalized ratio—have historically been utilized to assess hemostasis and guide treatment following traumatic brain injury. However, these plasma-based assays alone often lack the sensitivity to diagnose and adequately treat coagulopathy associated with traumatic brain injury. Here, we review the whole blood coagulation assays termed viscoelastic tests and their use in traumatic brain injury. Modified viscoelastic tests with platelet function assays have helped elucidate the underlying pathophysiology and guide clinical decisions in a goal-directed fashion. Platelet dysfunction appears to underlie most coagulopathies in this patient population, particularly at the adenosine diphosphate and/or arachidonic acid receptors. Future research will focus not only on the utility of viscoelastic tests in diagnosing coagulopathy in traumatic brain injury, but also on better defining the use of these tests as evidence-based and/or precision-based tools to improve patient outcomes.
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Affiliation(s)
- Jamie L. Bradbury
- Department of Neurosurgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
| | - Scott G. Thomas
- Department of Trauma Surgery, Memorial Hospital, South Bend, IN 46601, USA;
| | - Nikki R. Sorg
- Department of Emergency Medicine, Indiana University School of Medicine—South Bend, South Bend, IN 46617, USA; (N.R.S.); (A.N.M.); (S.R.S.)
| | - Nicolas Mjaess
- Department of Intensive Care Medicine, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA; (N.M.); (M.R.B.); (T.J.B.); (J.H.L.); (M.D.A.-F.); (Q.S.); (T.S.)
| | - Margaret R. Berquist
- Department of Intensive Care Medicine, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA; (N.M.); (M.R.B.); (T.J.B.); (J.H.L.); (M.D.A.-F.); (Q.S.); (T.S.)
| | - Toby J. Brenner
- Department of Intensive Care Medicine, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA; (N.M.); (M.R.B.); (T.J.B.); (J.H.L.); (M.D.A.-F.); (Q.S.); (T.S.)
| | - Jack H. Langford
- Department of Intensive Care Medicine, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA; (N.M.); (M.R.B.); (T.J.B.); (J.H.L.); (M.D.A.-F.); (Q.S.); (T.S.)
| | - Mathew K. Marsee
- Department of Otolaryngology, Portsmouth Naval Medical Center, Portsmouth, VA 23708, USA;
| | - Ashton N. Moody
- Department of Emergency Medicine, Indiana University School of Medicine—South Bend, South Bend, IN 46617, USA; (N.R.S.); (A.N.M.); (S.R.S.)
| | - Connor M. Bunch
- Department of Emergency Medicine, Indiana University School of Medicine—South Bend, South Bend, IN 46617, USA; (N.R.S.); (A.N.M.); (S.R.S.)
- Correspondence:
| | - Sandeep R. Sing
- Department of Emergency Medicine, Indiana University School of Medicine—South Bend, South Bend, IN 46617, USA; (N.R.S.); (A.N.M.); (S.R.S.)
| | - Mahmoud D. Al-Fadhl
- Department of Intensive Care Medicine, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA; (N.M.); (M.R.B.); (T.J.B.); (J.H.L.); (M.D.A.-F.); (Q.S.); (T.S.)
| | - Qussai Salamah
- Department of Intensive Care Medicine, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA; (N.M.); (M.R.B.); (T.J.B.); (J.H.L.); (M.D.A.-F.); (Q.S.); (T.S.)
| | - Tarek Saleh
- Department of Intensive Care Medicine, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA; (N.M.); (M.R.B.); (T.J.B.); (J.H.L.); (M.D.A.-F.); (Q.S.); (T.S.)
| | - Neal B. Patel
- Department of Neurosurgery, Memorial Hospital, South Bend, IN 46601, USA; (N.B.P.); (K.A.S.); (S.M.S.); (W.S.L.); (D.H.F.)
- Department of Neurosurgery, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA
| | - Kashif A. Shaikh
- Department of Neurosurgery, Memorial Hospital, South Bend, IN 46601, USA; (N.B.P.); (K.A.S.); (S.M.S.); (W.S.L.); (D.H.F.)
- Department of Neurosurgery, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA
| | - Stephen M. Smith
- Department of Neurosurgery, Memorial Hospital, South Bend, IN 46601, USA; (N.B.P.); (K.A.S.); (S.M.S.); (W.S.L.); (D.H.F.)
- Department of Neurosurgery, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA
| | - Walter S. Langheinrich
- Department of Neurosurgery, Memorial Hospital, South Bend, IN 46601, USA; (N.B.P.); (K.A.S.); (S.M.S.); (W.S.L.); (D.H.F.)
- Department of Neurosurgery, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA
| | - Daniel H. Fulkerson
- Department of Neurosurgery, Memorial Hospital, South Bend, IN 46601, USA; (N.B.P.); (K.A.S.); (S.M.S.); (W.S.L.); (D.H.F.)
- Department of Neurosurgery, St. Joseph Regional Medical Center, Mishawaka, IN 46545, USA
| | - Sherry Sixta
- Department of Trauma Surgery, Envision Physician Services, Plano, TX 75093, USA;
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11
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Use of Thromboelastography in the Evaluation and Management of Patients With Traumatic Brain Injury: A Systematic Review and Meta-Analysis. Crit Care Explor 2021; 3:e0526. [PMID: 34549189 PMCID: PMC8443808 DOI: 10.1097/cce.0000000000000526] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Supplemental Digital Content is available in the text. Traumatic brain injury is associated with coagulopathy that increases mortality risk. Viscoelastic hemostatic assays such as thromboelastography (Haemonetics SA, Signy, Switzerland) provide rapid coagulopathy assessment and may be particularly useful for goal-directed treatment of traumatic brain injury patients. We conducted a systematic review to assess thromboelastography in the evaluation and management of coagulopathy in traumatic brain injury patients.
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12
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Hvas CL, Hvas AM. Hemostasis and Fibrinolysis following Aneurysmal Subarachnoid Hemorrhage: A Systematic Review on Additional Knowledge from Dynamic Assays and Potential Treatment Targets. Semin Thromb Hemost 2021; 48:356-381. [PMID: 34261149 DOI: 10.1055/s-0041-1730346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Mortality after aneurysmal subarachnoid hemorrhage (aSAH) is augmented by rebleeding and delayed cerebral ischemia (DCI). A range of assays evaluating the dynamic process of blood coagulation, from activation of clotting factors to fibrinolysis, has emerged and a comprehensive review of hemostasis and fibrinolysis following aSAH may reveal targets of treatment. We conducted a systematic review of existing literature assessing coagulation and fibrinolysis following aSAH, but prior to treatment. PubMed, Embase, and Web of Science were searched on November 18, 2020, without time boundaries. In total, 45 original studies were eventually incorporated into this systematic review, divided into studies presenting data only from conventional or quantitative assays (n = 22) and studies employing dynamic assays (n = 23). Data from conventional or quantitative assays indicated increased platelet activation, whereas dynamic assays detected platelet dysfunction possibly related to an increased risk of rebleeding. Secondary hemostasis was activated in conventional, quantitative, and dynamic assays and this was related to poor neurological outcome and mortality. Studies systematically investigating fibrinolysis were sparse. Measurements from conventional or quantitative assays, as well as dynamic fibrinolysis assays, revealed conflicting results with normal or increased lysis and changes were not associated with outcome. In conclusion, dynamic assays were able to detect reduced platelet function, not revealed by conventional or quantitative assays. Activation of secondary hemostasis was found in both dynamic and nondynamic assays, while changes in fibrinolysis were not convincingly demonstrable in either dynamic or conventional or quantitative assays. Hence, from a mechanistic point of view, desmopressin to prevent rebleeding and heparin to prevent DCI may hold potential as therapeutic options. As changes in fibrinolysis were not convincingly demonstrated and not related to outcome, the use of tranexamic acid prior to aneurysm closure is not supported by this review.
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Affiliation(s)
- Christine Lodberg Hvas
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Anne-Mette Hvas
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.,Thrombosis and Hemostasis Research Unit, Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
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13
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Hypercoagulability as Measured by Thrombelastography May Be Associated with the Size of Acute Ischemic Infarct-A Pilot Study. Diagnostics (Basel) 2021; 11:diagnostics11040712. [PMID: 33921178 PMCID: PMC8071560 DOI: 10.3390/diagnostics11040712] [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: 03/21/2021] [Revised: 04/09/2021] [Accepted: 04/15/2021] [Indexed: 11/29/2022] Open
Abstract
Background: Thromboelastography (TEG®) measures coagulation function in venous blood. Previous studies have reported that this device providing an integrated data on dynamics of clot formation may be useful for predicting clinical outcome in ischemic stroke. We investigated whether a hypercoagulability detected by thrombelastography may be associated with larger size of acute ischemic infarct. Methods: We included 40 ischemic stroke subjects with large artery atherosclerosis or small-vessel disease to a cross-sectional pilot study. Thrombelastography parameters related to time of clot formation (R- reaction time, K-clot kinetics), clot growth and strengthening (angle-alpha and MA-maximum amplitude) and lysis (Ly30) were performed within first 24 h after the onset of stroke. A volume of ischemic infarct was assessed on the basis of diffusion-weighted imaging (DWI) sequence of magnetic resonance imaging. Results: In the entire group, we reported that subjects with a large ischemic focus (>2 cm3) had a higher diameter of a clot (measured as MA) than subjects with a small ischemic focus (p = 0.0168). In the large artery atherosclerosis subgroup, we showed a significant correlation between MA and size of acute infarct (R = 0.64, p = 0.0138), between angle (alpha) and size of acute infarct (R = 0.55, p = 0.0428) and stroke subjects with hypercoagulability (MA > 69 mm) had significantly higher probability of a larger size of acute ischemic focus compared to normalcoagulable subjects (5.45 cm3 vs. 1.35 cm3; p = 0.0298). In multivariate logistic regression hypercoagulability was a predictor of a large size of ischemic infarct (Odds ratio OR = 59.5; 95% confidence interval (CI) 1.08–3558.8; p = 0.0488). Conclusions: We emphasized that thrombelastography, based on the parameters related to clot strength, may have clinical utility to identify the risk of the extensive ischemic infarct.
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14
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Webb AJ, Brown CS, Naylor RM, Rabinstein AA, Mara KC, Nei AM. Thromboelastography is a Marker for Clinically Significant Progressive Hemorrhagic Injury in Severe Traumatic Brain Injury. Neurocrit Care 2021; 35:738-746. [PMID: 33846901 DOI: 10.1007/s12028-021-01217-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 02/20/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Coagulopathy in traumatic brain injury (TBI) is associated with increased risk of poor outcomes, but accurate prediction of clinically significant progressive hemorrhagic injury (PHI) in patients with severe TBI remains a challenge. Thromboelastography (TEG) is a real-time test of whole blood coagulation that provides dynamic information about global hemostasis. This study aimed to identify differences in TEG values between patients with severe TBI who did or did not experience clinically significant PHI. METHODS This was a single-center retrospective cohort study of adult patients with severe TBI. Patients were eligible for inclusion if initial Glasgow coma scale (GCS) was ≤ 8 and baseline head computed tomography (CT) imaging and TEG were available. Exclusion criteria included receipt of hemostatic agents prior to TEG. PHI was defined as bleeding expansion on CT within 24 h associated with 2-point drop in GCS, neurosurgical intervention, or mortality within 24 h. The primary endpoint was TEG value differences between patients with and without PHI. Secondary endpoints included differences in conventional coagulation tests (CCTs) between groups. RESULTS Of the 526 patients evaluated, 141 met inclusion criteria. The most common reason for exclusion was lack of baseline TEG and receipt of reversal product prior to TEG. Sixty-four patients experienced PHI in the first 24 h after presentation. K time (2.03 min vs. 1.33 min, P = 0.035) and alpha angle (65° vs. 69°, P = 0.015) were found to be significantly different in patients experiencing PHI. R time (5.25 min vs. 4.71 min), maximum amplitude (61 mm vs. 63 mm), and clot lysis at 30 min after maximum clot strength (3.5% vs. 1.7%) were not significantly different between groups. Of the CCTs, only activated partial thromboplastin time (30.3 s vs. 27.6 s, P = 0.014) was found to be different in patients with PHI. CONCLUSIONS Prolonged K time and narrower alpha angle were found to be associated with developing clinically significant PHI in patients with severe TBI. Despite differences detected in alpha angle, median values in both groups were within normal reference ranges. These abnormalities may reflect pathologic hypoactivity of fibrinogen, and further study is warranted to evaluate TEG-guided cryoprecipitate administration in this patient population.
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Affiliation(s)
- Andrew J Webb
- Department of Pharmacy, Oregon Health and Science University, Portland, OR, USA.
| | | | - Ryan M Naylor
- Department of Neurosurgery, Mayo Clinic, Rochester, MN, USA
| | | | - Kristin C Mara
- Department of Biomedical Statistics, Mayo Clinic, Rochester, MN, USA
| | - Andrea M Nei
- Department of Pharmacy, Mayo Clinic, Rochester, MN, USA
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15
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Riojas CM, Ekaney ML, Ross SW, Cunningham KW, Furay EJ, Brown CVR, Evans SL. Platelet Dysfunction after Traumatic Brain Injury: A Review. J Neurotrauma 2021; 38:819-829. [PMID: 33143502 DOI: 10.1089/neu.2020.7301] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Coagulopathy is a known sequela of traumatic brain injury (TBI) and can lead to increased morbidity and mortality. Platelet dysfunction has been identified as one of several etiologies of coagulopathy following TBI and has been associated with poor outcomes. Regardless of whether the platelet dysfunction occurs as a direct consequence of the injury or because of pre-existing medical comorbidities or medication use, accurate detection and monitoring of response to therapy is key to optimal patient care. Platelet transfusion has been proposed as a potential therapeutic intervention to treat platelet dysfunction, with several studies using platelet function assays to monitor response. The development of increasingly precise diagnostic testing is providing enhanced understanding of the specific derangement in the hemostatic process, allowing clinicians to provide patient-specific treatment plans. There is wide variability in the currently available literature on the incidence and clinical significance of platelet dysfunction following TBI, which creates challenges with developing evidence-based management guidelines. The relatively high prevalence of platelet inhibitor therapy serves as an additional confounding factor. In addition, the data are largely retrospective in nature. We performed a literature review to provide clarity on this clinical issue. We reviewed 348 abstracts, and included 97 manuscripts in our final literature review. Based on the currently available research, platelet dysfunction has been consistently demonstrated in patients with moderate-severe TBI. We recommend the use of platelet functional assays to evaluate patients with TBI. Platelet transfusion directed at platelet dysfunction may lead to improved clinical outcome. A randomized trial guided by implementation science could improve the applicability of these practices.
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Affiliation(s)
- Christina M Riojas
- FH "Sammy" Ross Trauma Center, Department of Surgery, Carolinas Medical Center, Charlotte, North Carolina, USA
| | - Michael L Ekaney
- FH "Sammy" Ross Trauma Center, Department of Surgery, Carolinas Medical Center, Charlotte, North Carolina, USA
| | - Samuel W Ross
- FH "Sammy" Ross Trauma Center, Department of Surgery, Carolinas Medical Center, Charlotte, North Carolina, USA
| | - Kyle W Cunningham
- FH "Sammy" Ross Trauma Center, Department of Surgery, Carolinas Medical Center, Charlotte, North Carolina, USA
| | - Elisa J Furay
- Dell Medical School, University of Texas at Austin, Austin, Texas, USA
| | - Carlos V R Brown
- Dell Medical School, University of Texas at Austin, Austin, Texas, USA
| | - Susan L Evans
- FH "Sammy" Ross Trauma Center, Department of Surgery, Carolinas Medical Center, Charlotte, North Carolina, USA
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16
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Sribnick EA, Wenger N, Nicol K, Tobias JD. Use of viscoelastic monitoring and prothrombin complex concentrate in a paediatric patient with polytrauma and severe traumatic brain injury. BMJ Case Rep 2020; 13:13/12/e236608. [PMID: 33318272 PMCID: PMC7737072 DOI: 10.1136/bcr-2020-236608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Viscoelastic monitoring (VEM) tools, such as rotational thrombelastometry, have been used extensively to measure coagulopathy in adults but have received less attention in paediatric care. The presented case involves a 5-year-old boy who was brought to the emergency department after a motor vehicle collision with a Glasgow Coma Scale score of 6T and extensive injuries, including a subdural hematoma. VEM was used to monitor the patient's coagulopathy and to inform treatment measures by allowing real-time visualisation of the patient's coagulation status. VEM was additionally used to direct blood product replacement in preparation for neurosurgical intervention, and 4-factor prothrombin complex concentrate (PCC) was used to help reverse the coagulopathy. The patient underwent successful hemicraniectomy after improvement of his coagulopathy. In paediatrics, VEM and PCC are increasingly being used for post-trauma coagulopathy, and this case highlights their potential promise and the need for further research.
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Affiliation(s)
- Eric A Sribnick
- Department of Neurosurgery, Nationwide Children's Hospital, Columbus, Ohio, USA,Deparmtent of Neurosurgery, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Nicole Wenger
- The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Kathleen Nicol
- Deaprtment of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, Ohio, USA,Department of Pathology, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Joseph D Tobias
- Department of Anesthesiology and Pain Medicine, Nationwide Children's Hospital, Columbus, Ohio, USA,Depatment of Anesthesiology and Pain Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
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17
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Tyler PD, Yang LM, Snider SB, Lerner AB, Aird WC, Shapiro NI. New Uses for Thromboelastography and Other Forms of Viscoelastic Monitoring in the Emergency Department: A Narrative Review. Ann Emerg Med 2020; 77:357-366. [PMID: 32988649 DOI: 10.1016/j.annemergmed.2020.07.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 07/10/2020] [Accepted: 07/14/2020] [Indexed: 12/17/2022]
Abstract
Patients frequently visit the emergency department with conditions that place them at risk of worse outcomes when accompanied by coagulopathy. Routine tests of coagulation-prothrombin time, partial thromboplastin time, platelets, and fibrinogen-have shortcomings that limit their use in providing emergency care. One alternative is to investigate coagulation disturbance with viscoelastic monitoring (VEM), a coagulation test that measures the timing and strength of blood clot development in real time. VEM is widely used and studied in cardiac surgery, liver transplant surgery, anesthesia, and trauma. In this article, we review the technique of VEM and the biologic rationale of using it in addition to routine tests of coagulation in emergency clinical situations. Then, we review the evidence (or lack thereof) for using VEM in the diagnosis and treatment of specific conditions. Finally, we describe the limitations of the test and future directions for clinical use and research in emergency medicine.
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Affiliation(s)
- Patrick D Tyler
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA.
| | - Lauren M Yang
- Department of Medicine, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Boston, MA
| | - Samuel B Snider
- Center for Neurotechnology and Neurorecovery, Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Adam B Lerner
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - William C Aird
- Department of Medicine, Division of Hematology and Oncology, Beth Israel Deaconess Medical Center, Boston, MA
| | - Nathan I Shapiro
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
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18
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Roh D, Chang T, Zammit C, Wagener G, Reynolds AS, Yoh N, Elkind MS, Doyle K, Boehme A, Eisenberger A, Francis RO, Park S, Agarwal S, Connolly ES, Claassen J, Hod E. Functional Coagulation Differences Between Lobar and Deep Intracerebral Hemorrhage Detected by Rotational Thromboelastometry: A Pilot Study. Neurocrit Care 2019; 31:81-87. [PMID: 30693412 PMCID: PMC6609477 DOI: 10.1007/s12028-019-00672-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND Lobar intracerebral hemorrhage (ICH) is known to have better clinical outcomes and preliminary evidence of less hematoma expansion compared to deep ICH. No functional coagulation differences between lobar and deep ICH have been identified using traditional plasma-based coagulation tests. We investigated for coagulation differences between lobar and deep ICH using whole-blood coagulation testing (Rotational Thromboelastometry: [ROTEM]). METHODS Clinical, radiographic, and laboratory data were prospectively collected for primary ICH patients enrolled in a single-center ICH study. Patients with preceding anticoagulant use or admission coagulopathy on traditional laboratory testing were excluded. Lobar and deep ICH patients receiving admission ROTEM were analyzed. Linear regression was used to assess the association of ICH location with coagulation test results after adjusting for potential confounders. RESULTS There were 12 lobar and 19 deep ICH patients meeting inclusion criteria. Lobar ICH patients were significantly older and predominantly female. Lobar ICH had faster intrinsic pathway coagulation times (139.8 vs 203.2 s; 95% CI - 179.91 to - 45.96; p = 0.002) on ROTEM testing compared to deep ICH after adjusting for age, sex, and hematoma volume. This revealed functional coagulation differences, specifically quicker clot formation in lobar compared to deep ICH. No differences were noted using traditional coagulation testing (prothrombin time/partial thromboplastin time/platelet count). CONCLUSIONS Our pilot data may suggest that there are functional coagulation differences between lobar and deep ICH identified using ROTEM. Whole-blood coagulation testing may be useful in assessing coagulopathy in ICH patients and in determining reversal treatment paradigms, though further work is needed.
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Affiliation(s)
- David Roh
- Columbia University, Vagelos College of Physicians and Surgeons, NY
| | | | | | - Gebhard Wagener
- Columbia University, Vagelos College of Physicians and Surgeons, NY
| | | | - Nina Yoh
- Columbia University, Vagelos College of Physicians and Surgeons, NY
| | | | - Kevin Doyle
- Columbia University, Vagelos College of Physicians and Surgeons, NY
| | - Amelia Boehme
- Columbia University, Vagelos College of Physicians and Surgeons, NY
| | | | | | - Soojin Park
- Columbia University, Vagelos College of Physicians and Surgeons, NY
| | - Sachin Agarwal
- Columbia University, Vagelos College of Physicians and Surgeons, NY
| | | | - Jan Claassen
- Columbia University, Vagelos College of Physicians and Surgeons, NY
| | - Eldad Hod
- Columbia University, Vagelos College of Physicians and Surgeons, NY
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19
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Salem AM, Roh D, Kitagawa RS, Choi HA, Chang TR. Assessment and management of coagulopathy in neurocritical care. JOURNAL OF NEUROCRITICAL CARE 2019. [DOI: 10.18700/jnc.190086] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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20
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Guillotte AR, Herbert JP, Madsen R, Hammer RD, Litofsky NS. Effects of platelet dysfunction and platelet transfusion on outcomes in traumatic brain injury patients. Brain Inj 2018; 32:1849-1857. [PMID: 30346865 DOI: 10.1080/02699052.2018.1536805] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVE Platelet inhibition in traumatic brain injury (TBI) may be due to injury or antiplatelet medication use pre-injury. This study aims to identify factors associated with increased platelet arachidonic acid (AA) and adenosine diphosphate (ADP) inhibition and determine if platelet transfusion reduces platelet dysfunction and affects outcome. METHODS Prospective thromboelastography (TEG) assays were collected on adult patients with TBI with intracranial injuries detected by computed tomography (CT). Outcomes included in-hospital mortality, and CT lesion expansion. RESULTS Of 153 patients, ADP inhibition was increased in moderate and severe TBI compared to mild TBI (p = 0.0011). P2Y12 inhibiting medications had increased ADP inhibition (p = 0.0077). Admission ADP inhibition was not associated with in-hospital mortality (p = 0.24) or CT lesion expansion (p = 0.94). Mean reduction of ADP inhibition from platelet transfusion (-15.1%) relative to no transfusion (+ 11.7%) was not statistically different (p = 0.0472). CONCLUSIONS Mild TBI results in less ADP inhibition compared to moderate and severe TBI, suggesting a dose response relationship between TBI severity and degree of platelet dysfunction. Further, study is warranted to determine efficacy and parameters for platelet transfusion in patients with TBI.
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Affiliation(s)
- Andrew R Guillotte
- a Division of Neurological Surgery , University of Missouri School of Medicine , Columbia , MO , USA
| | - Joseph P Herbert
- a Division of Neurological Surgery , University of Missouri School of Medicine , Columbia , MO , USA
| | - Richard Madsen
- b Biostatistics and Research Design , University of Missouri School of Medicine , Columbia , MO , USA
| | - Richard D Hammer
- c Department of Pathology and Anatomical Sciences , University of Missouri School of Medicine , Columbia , MO USA
| | - N Scott Litofsky
- a Division of Neurological Surgery , University of Missouri School of Medicine , Columbia , MO , USA
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21
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Albert V, Subramanian A, Pati HP, Agrawal D, Bhoi SK. Efficacy of Thromboelastography (TEG) in Predicting Acute Trauma-Induced Coagulopathy (ATIC) in Isolated Severe Traumatic Brain Injury (iSTBI). Indian J Hematol Blood Transfus 2018; 35:325-331. [PMID: 30988571 DOI: 10.1007/s12288-018-1003-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 08/02/2018] [Indexed: 12/27/2022] Open
Abstract
To evaluate the efficacy of point-of-care thromboelastography (TEG) to predict acute trauma-induced coagulopathy (ATIC) in isolated severe TBI (iSTBI). We conducted an observational diagnostic cohort. Patients for whom TEG was performed before blood transfusion were stratified by conventional coagulation tests (CCTs) on admission and classified as "ATIC" (prothrombin time ≥ 16.70 s; international normalized ratio ≥ 1.27; activated partial thromboplastin time ≥ 28.80 s) (n = 24) or "no ATIC" (n = 34). Univariate analysis to compare groups, receiver operating characteristic analysis to establish cut-off and diagnostic validation was done. Fifty-eight patients were included [32(25-45) years; 97% male; GCS 6.3 ± 1.5]. 41% developed ATIC. Compared to no-ATIC, ATIC group had significantly prolonged κ-time (4.6 vs. 2.5 min; p = 0.01) and shortened α-angle (40.2° vs. 56.3°; p = 0.03). A cut-off for κ-time ≥ 3.7 (AUC 0.68 95% CI 0.54-0.82, specificity 70%, sensitivity 63%) and α angle ≤ 48.0 (AUC 0.66, 95% CI 0.51-0.81, specificity 67%, sensitivity 67%) was established. The diagnostic accuracy of this cut-off for identifying ATIC, was 55.6% with sensitivity (81.8%) and specificity (14.3%). TEG may be a clinically sensitive test for identifying the underlying coagulopathy following TBI. However confirmation with CCTs is recommended.
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Affiliation(s)
- Venencia Albert
- 1Department of Laboratory Medicine, Jai Prakash Narayan Apex Trauma Center, AIIMS, New Delhi, India
| | - Arulselvi Subramanian
- 1Department of Laboratory Medicine, Jai Prakash Narayan Apex Trauma Center, AIIMS, New Delhi, India
| | | | - Deepak Agrawal
- 3Department of Neurosurgery, Jai Prakash Narayan Apex Trauma Center, AIIMS, New Delhi, India
| | - Sanjeev Kumar Bhoi
- 4Department of Emergency Medicine, Jai Prakash Narayan Apex Trauma Center, AIIMS, New Delhi, India
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22
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Bundles of care for resuscitation from hemorrhagic shock and severe brain injury in trauma patients-Translating knowledge into practice. J Trauma Acute Care Surg 2018; 81:780-94. [PMID: 27389129 DOI: 10.1097/ta.0000000000001161] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Folkerson LE, Sloan D, Davis E, Kitagawa RS, Cotton BA, Holcomb JB, Tomasek JS, Wade CE. Coagulopathy as a predictor of mortality after penetrating traumatic brain injury. Am J Emerg Med 2018; 36:38-42. [DOI: 10.1016/j.ajem.2017.06.057] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 06/20/2017] [Accepted: 06/21/2017] [Indexed: 11/29/2022] Open
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24
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Kvint S, Schuster J, Kumar MA. Neurosurgical applications of viscoelastic hemostatic assays. Neurosurg Focus 2017; 43:E9. [DOI: 10.3171/2017.8.focus17447] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Patients taking antithrombotic agents are very common in neurosurgical practice. The perioperative management of these patients can be extremely challenging especially as newer agents, with poorly defined laboratory monitoring and reversal strategies, become more prevalent. This is especially true with emergent cases in which rapid reversal of anticoagulation is required and the patient’s exact medical history is not available. With an aging patient population and the associated increase in diseases such as atrial fibrillation, it is expected that the use of these agents will continue to rise in coming years. Furthermore, thromboembolic complications such as deep venous thrombosis, pulmonary embolism, and myocardial infarction are common complications of major surgery. These trends, in conjunction with a growing understanding of the hemostatic process and its contribution to the pathophysiology of disease, stress the importance of the complete evaluation of a patient’s hemostatic profile in guiding management decisions. Viscoelastic hemostatic assays (VHAs), such as thromboelastography and rotational thromboelastometry, are global assessments of coagulation that account for the cellular and plasma components of coagulation. This FDA-approved technology has been available for decades and has been widely used in cardiac surgery and liver transplantation. Although VHAs were cumbersome in the past, advances in software and design have made them more accurate, reliable, and accessible to the neurosurgeon. VHAs have demonstrated utility in guiding intraoperative blood product transfusion, identifying coagulopathy in trauma, and managing postoperative thromboprophylaxis. The first half of this review aims to evaluate and assess VHAs, while the latter half seeks to appraise the evidence supporting their use in neurosurgical populations.
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Affiliation(s)
| | | | - Monisha A. Kumar
- Departments of 1Neurosurgery and
- 2Neurology, University of Pennsylvania, Philadelphia, Pennsylvania
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25
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Rao A, Lin A, Hilliard C, Fu R, Lennox T, Barbosa R, Schreiber M, Rowell S. The Utility of Thromboelastography for Predicting The Risk of Progression of Intracranial Hemorrhage in Traumatic Brain Injury Patients. Neurosurgery 2017; 64:182-187. [PMID: 28899039 DOI: 10.1093/neuros/nyx210] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 03/30/2017] [Indexed: 01/02/2023] Open
Affiliation(s)
- Abigail Rao
- Department of Neurological Surgery, OHSU, Portland, Oregon
| | - Amber Lin
- School of Public Health and Center for Policy Re-search, OHSU, Portland, Oregon
| | - Cole Hilliard
- Division of Trauma, Critical Care and Acute Care Surgery, Department of Surgery, OHSU, Portland, Oregon
| | - Rongwei Fu
- School of Public Health and Center for Policy Re-search, OHSU, Portland, Oregon
| | - Tori Lennox
- Division of Cardio-thoracic Surgery, University of Wash-ington, Seattle, Washington
| | - Ronald Barbosa
- Trauma Services, Legacy Emanuel Hospital and Health Services, Portland, Oregon
| | - Martin Schreiber
- Division of Trauma, Critical Care and Acute Care Surgery, Department of Surgery, OHSU, Portland, Oregon
| | - Susan Rowell
- Division of Trauma, Critical Care and Acute Care Surgery, Department of Surgery, OHSU, Portland, Oregon
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26
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Maegele M, Schöchl H, Menovsky T, Maréchal H, Marklund N, Buki A, Stanworth S. Coagulopathy and haemorrhagic progression in traumatic brain injury: advances in mechanisms, diagnosis, and management. Lancet Neurol 2017; 16:630-647. [PMID: 28721927 DOI: 10.1016/s1474-4422(17)30197-7] [Citation(s) in RCA: 200] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 05/08/2017] [Accepted: 05/30/2017] [Indexed: 01/28/2023]
Abstract
Normal haemostasis depends on an intricate balance between mechanisms of bleeding and mechanisms of thrombosis, and this balance can be altered after traumatic brain injury (TBI). Impaired haemostasis could exacerbate the primary insult with risk of initiation or aggravation of bleeding; anticoagulant use at the time of injury can also contribute to bleeding risk after TBI. Many patients with TBI have abnormalities on conventional coagulation tests at admission to the emergency department, and the presence of coagulopathy is associated with increased morbidity and mortality. Further blood testing often reveals a range of changes affecting platelet numbers and function, procoagulant or anticoagulant factors, fibrinolysis, and interactions between the coagulation system and the vascular endothelium, brain tissue, inflammatory mechanisms, and blood flow dynamics. However, the degree to which these coagulation abnormalities affect TBI outcomes and whether they are modifiable risk factors are not known. Although the main challenge for management is to address the risk of hypocoagulopathy with prolonged bleeding and progression of haemorrhagic lesions, the risk of hypercoagulopathy with an increased prothrombotic tendency also warrants consideration.
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Affiliation(s)
- Marc Maegele
- Department for Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University Witten/Herdecke, Cologne, Germany; Institute for Research in Operative Medicine, University Witten/Herdecke, Cologne, Germany.
| | - Herbert Schöchl
- Department for Anaesthesiology and Intensive Care Medicine, AUVA Trauma Academic Teaching Hospital, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Tomas Menovsky
- Department for Neurosurgery, Antwerp University Hospital, University of Antwerp, Edegem, Belgium
| | - Hugues Maréchal
- Department of Anaesthesiology and Intensive Care Medicine, CRH La Citadelle, Liège, Belgium
| | - Niklas Marklund
- Department of Clinical Sciences, Division of Neurosurgery, University Hospital of Southern Sweden, Lund University, Lund, Sweden
| | - Andras Buki
- Department of Neurosurgery, The MTA-PTE Clinical Neuroscience MR Research Group, Janos Szentagothai Research Center, Hungarian Brain Research Program, University of Pécs, Pécs, Hungary
| | - Simon Stanworth
- NHS Blood and Transplant/Oxford University Hospitals NHS Foundation Trust, University of Oxford, John Radcliffe Hospital, Oxford, UK
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Gozal YM, Carroll CP, Krueger BM, Khoury J, Andaluz NO. Point-of-care testing in the acute management of traumatic brain injury: Identifying the coagulopathic patient. Surg Neurol Int 2017; 8:48. [PMID: 28480110 PMCID: PMC5402332 DOI: 10.4103/sni.sni_265_16] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 01/25/2017] [Indexed: 12/31/2022] Open
Abstract
Background: The use of anticoagulants or antiplatelet medications has become increasingly common and is a well-established risk factor for worsening of hemorrhages in trauma patients. The current study addresses the need to investigate the efficacy of point-of-care tests (POC) as an adjunct to conventional coagulation testing in traumatic brain injury (TBI) patients. Methods: A retrospective review of 190 TBI patients >18 years of age who underwent both conventional and POC testing as part of their admission coagulopathy workup was conducted. Coagulation deficiency was defined as an international normalized ratio (INR) >1.4, a reaction time (r-value) on rapid thromboelastography >50 seconds, or a VerifyNow Aspirin (VN-ASA) level of < 550 Aspirin Reaction Units. Results: Among 190 patients, 91 (48%) disclosed a history of either warfarin or antiplatelet use or had documented INR >1.4. Of the 18 (9%) patients who reported warfarin use, 83% had elevated INR and 61% had elevated r-value. However, 41% of the patients without reported anticoagulant usage revealed significantly elevated r-value consistent with a post-traumatic hypocoagulable state. Of 64 (34%) patients who reported taking ASA, 51 (80%) demonstrated therapeutic VN-ASA. Interestingly, 31 of 126 (25%) patients not reporting ASA use were also noted to have therapeutic VN-ASA suggestive of platelet dysfunction. Conclusions: The coagulopathy POC panel consisting of r-TEG and VN-ASA successfully identified a subset of TBI patients with an occult coagulopathy that would have otherwise been missed. Standardization of these POC assays on admission in TBI may help guide patient resuscitation in the acute setting.
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Affiliation(s)
- Yair M Gozal
- Department of Neurosurgery, University of Cincinnati (UC) College of Medicine, Cincinnati, Ohio, USA.,Neurotrauma Center, UC Neuroscience Institute, Cincinnati, Ohio, USA
| | - Christopher P Carroll
- Department of Neurosurgery, University of Cincinnati (UC) College of Medicine, Cincinnati, Ohio, USA.,Neurotrauma Center, UC Neuroscience Institute, Cincinnati, Ohio, USA
| | - Bryan M Krueger
- Department of Neurosurgery, University of Cincinnati (UC) College of Medicine, Cincinnati, Ohio, USA.,Neurotrauma Center, UC Neuroscience Institute, Cincinnati, Ohio, USA
| | - Jane Khoury
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Norberto O Andaluz
- Department of Neurosurgery, University of Cincinnati (UC) College of Medicine, Cincinnati, Ohio, USA.,Neurotrauma Center, UC Neuroscience Institute, Cincinnati, Ohio, USA.,Mayfield Clinic, Cincinnati, Ohio, USA
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28
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Vanderwerf JD, Kumar MA. Management of neurologic complications of coagulopathies. HANDBOOK OF CLINICAL NEUROLOGY 2017; 141:743-764. [PMID: 28190445 DOI: 10.1016/b978-0-444-63599-0.00040-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Coagulopathy is common in intensive care units (ICUs). Many physiologic derangements lead to dysfunctional hemostasis; these may be either congenital or acquired. The most devastating outcome of coagulopathy in the critically ill is major bleeding, defined by transfusion requirement, hemodynamic instability, or intracranial hemorrhage. ICU coagulopathy often poses complex management dilemmas, as bleeding risk must be tempered with thrombotic potential. Coagulopathy associated with intracranial hemorrhage bears directly on prognosis and outcome. There is a paucity of high-quality evidence for the management of coagulopathies in neurocritical care; however, data derived from studies of patients with intraparenchymal hemorrhage may inform treatment decisions. Coagulopathy is often broadly defined as any derangement of hemostasis resulting in either excessive bleeding or clotting, although most typically it is defined as impaired clot formation. Abnormalities in coagulation testing without overt clinical bleeding may also be considered evidence of coagulopathy. This chapter will focus on acquired conditions, such as organ failure, pharmacologic therapies, and platelet dysfunction that are associated with defective clot formation and result in, or exacerbate, intracranial hemorrhage, specifically spontaneous intraparenchymal hemorrhage and traumatic brain injury.
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Affiliation(s)
- J D Vanderwerf
- Department of Neurology, Perelman School of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - M A Kumar
- Departments of Neurology, Neurosurgery, Anesthesiology and Critical Care, Perelman School of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA.
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29
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Abstract
Thrombelastography (TEG) measures coagulation in venous blood. We hypothesized that TEG, by reflecting clot subtype and ex vivo fibrinolysis, might predict fibrinolytic response to tPA as reflected by rapid clinical improvement or hemorrhagic transformation of the infarct. 171 acute ischemic stroke patients treated with tPA were prospectively enrolled. Venous blood for TEG was drawn before and 10 min after tPA bolus. We measured rapid clinical improvement (RCI = 8 point improvement on NIHSS or total NIHSS of 0, 1 at 36 h), Hemorrhagic transformation (HT = any blood on imaging within 36 h), and hyperdense middle cerebral artery sign (HDMCA = biomarker for erythrocyte-rich clot). Multivariable regression models compared TEG parameters after adjusting for potential confounders. No differences in pre- or post-tPA TEG were found between patients with or without RCI. Also, there was no correlation between TEG and HDMCA. Clotting was slightly prolonged in patients with HT (p = 0.046). We failed to find a robust association between TEG and clinical response to tPA. It is likely that arterial clot lysis is determined by factors unrelated to coagulation status as measured by TEG in the venous circulation. It is unlikely that TEG will be useful to predict clinical response to tPA, but may help predict bleeding.
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30
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Kreitzer NP, Bonomo J, Kanter D, Zammit C. Review of Thromboelastography in Neurocritical Care. Neurocrit Care 2016; 23:427-33. [PMID: 26275677 DOI: 10.1007/s12028-015-0187-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Natalie P Kreitzer
- Neurocritical Care and Neurovascular Emergencies, University of Cincinnati, Cincinnati, OH, USA.
| | - Jordan Bonomo
- Neurosurgery/Neurocritical Care, University of Cincinnati, Cincinnati, OH, USA
| | - Daniel Kanter
- Division of Neurocritical Care, University of Cincinnati, Cincinnati, OH, USA
| | - Christopher Zammit
- Neurosurgery/Neurocritical Care, University of Cincinnati, Cincinnati, OH, USA
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31
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Wang Q, Fan W, Cai Y, Wu Q, Mo L, Huang Z, Huang H. Protective effects of taurine in traumatic brain injury via mitochondria and cerebral blood flow. Amino Acids 2016; 48:2169-77. [PMID: 27156064 DOI: 10.1007/s00726-016-2244-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 04/25/2016] [Indexed: 12/12/2022]
Abstract
In mammalian tissues, taurine is an important natural component and the most abundant free amino acid in the heart, retina, skeletal muscle, brain, and leukocytes. This study is to examine the taurine's protective effects on neuronal ultrastructure, the function of the mitochondrial respiratory chain complex, and on cerebral blood flow (CBF). The model of traumatic brain injury (TBI) was made for SD rats by a fluid percussion device, with taurine (200 mg/kg) administered by tail intravenous injection once daily for 7 days after TBI. It was found that CBF was improved for both left and right brain at 30 min and 7 days post-injury by taurine. Reaction time was prolonged relative to the TBI-only group. Neuronal damage was prevented by 7 days taurine. Mitochondrial electron transport chain complexes I and II showed greater activity with the taurine group. The improvement by taurine of CBF may alleviate edema and elevation in intracranial pressure. Importantly taurine improved the hypercoagulable state.
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Affiliation(s)
- Qin Wang
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 27 Nanwei Road, Xicheng District, Beijing, 100050, China.,Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurological Institute, Tianjin Huanhu Hospital, No. 6 Jizhao Road, Jinnan District, Tianjin, 300350, China
| | - Weijia Fan
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurological Institute, Tianjin Huanhu Hospital, No. 6 Jizhao Road, Jinnan District, Tianjin, 300350, China
| | - Ying Cai
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurological Institute, Tianjin Huanhu Hospital, No. 6 Jizhao Road, Jinnan District, Tianjin, 300350, China
| | - Qiaoli Wu
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurological Institute, Tianjin Huanhu Hospital, No. 6 Jizhao Road, Jinnan District, Tianjin, 300350, China
| | - Lidong Mo
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurological Institute, Tianjin Huanhu Hospital, No. 6 Jizhao Road, Jinnan District, Tianjin, 300350, China
| | - Zhenwu Huang
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 27 Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Huiling Huang
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurological Institute, Tianjin Huanhu Hospital, No. 6 Jizhao Road, Jinnan District, Tianjin, 300350, China.
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Rossaint R, Bouillon B, Cerny V, Coats TJ, Duranteau J, Fernández-Mondéjar E, Filipescu D, Hunt BJ, Komadina R, Nardi G, Neugebauer EAM, Ozier Y, Riddez L, Schultz A, Vincent JL, Spahn DR. The European guideline on management of major bleeding and coagulopathy following trauma: fourth edition. Crit Care 2016; 20:100. [PMID: 27072503 PMCID: PMC4828865 DOI: 10.1186/s13054-016-1265-x] [Citation(s) in RCA: 597] [Impact Index Per Article: 74.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 03/11/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Severe trauma continues to represent a global public health issue and mortality and morbidity in trauma patients remains substantial. A number of initiatives have aimed to provide guidance on the management of trauma patients. This document focuses on the management of major bleeding and coagulopathy following trauma and encourages adaptation of the guiding principles to each local situation and implementation within each institution. METHODS The pan-European, multidisciplinary Task Force for Advanced Bleeding Care in Trauma was founded in 2004 and included representatives of six relevant European professional societies. The group used a structured, evidence-based consensus approach to address scientific queries that served as the basis for each recommendation and supporting rationale. Expert opinion and current clinical practice were also considered, particularly in areas in which randomised clinical trials have not or cannot be performed. Existing recommendations were reconsidered and revised based on new scientific evidence and observed shifts in clinical practice; new recommendations were formulated to reflect current clinical concerns and areas in which new research data have been generated. This guideline represents the fourth edition of a document first published in 2007 and updated in 2010 and 2013. RESULTS The guideline now recommends that patients be transferred directly to an appropriate trauma treatment centre and encourages use of a restricted volume replacement strategy during initial resuscitation. Best-practice use of blood products during further resuscitation continues to evolve and should be guided by a goal-directed strategy. The identification and management of patients pre-treated with anticoagulant agents continues to pose a real challenge, despite accumulating experience and awareness. The present guideline should be viewed as an educational aid to improve and standardise the care of the bleeding trauma patients across Europe and beyond. This document may also serve as a basis for local implementation. Furthermore, local quality and safety management systems need to be established to specifically assess key measures of bleeding control and outcome. CONCLUSIONS A multidisciplinary approach and adherence to evidence-based guidance are key to improving patient outcomes. The implementation of locally adapted treatment algorithms should strive to achieve measureable improvements in patient outcome.
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Affiliation(s)
- Rolf Rossaint
- />Department of Anaesthesiology, University Hospital Aachen, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Bertil Bouillon
- />Department of Trauma and Orthopaedic Surgery, Witten/Herdecke University, Cologne-Merheim Medical Centre, Ostmerheimer Strasse 200, 51109 Cologne, Germany
| | - Vladimir Cerny
- />Department of Anaesthesiology, Perioperative Medicine and Intensive Care, J.E. Purkinje University, Masaryk Hospital, Usti nad Labem, Socialni pece 3316/12A, 40113 Usti nad Labem, Czech Republic
- />Department of Research and Development, Charles University in Prague, Faculty of Medicine in Hradec Kralove, Sokolska 581, 50005 Hradec Kralove, Czech Republic
- />Department of Anaesthesiology and Intensive Care, Charles University in Prague, Faculty of Medicine in Hradec Kralove, Sokolska 581, 50005 Hradec Kralove, Czech Republic
- />Department of Anaesthesia, Pain Management and Perioperative Medicine, Dalhousie University, Halifax, QE II Health Sciences Centre, 10 West Victoria, 1276 South Park St., Halifax, NS B3H 2Y9 Canada
| | - Timothy J. Coats
- />Emergency Medicine Academic Group, University of Leicester, University Road, Leicester, LE1 7RH UK
| | - Jacques Duranteau
- />Department of Anaesthesia and Intensive Care, Hôpitaux Universitaires Paris Sud, University of Paris XI, Faculté de Médecine Paris-Sud, 78 rue du Général Leclerc, 94275 Le Kremlin-Bicêtre, Cedex France
| | - Enrique Fernández-Mondéjar
- />Servicio de Medicina Intensiva, Complejo Hospitalario Universitario de Granada, ctra de Jaén s/n, 18013 Granada, Spain
| | - Daniela Filipescu
- />Department of Cardiac Anaesthesia and Intensive Care, C. C. Iliescu Emergency Institute of Cardiovascular Diseases, Sos Fundeni 256-258, 022328 Bucharest, Romania
| | - Beverley J. Hunt
- />King’s College, Departments of Haematology, Pathology and Lupus, Guy’s and St Thomas’ NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH UK
| | - Radko Komadina
- />Department of Traumatology, General and Teaching Hospital Celje, Oblakova 5, 3000 Celje, Slovenia
| | - Giuseppe Nardi
- />Shock and Trauma Centre, S. Camillo Hospital, Viale Gianicolense 87, 00152 Rome, Italy
| | - Edmund A. M. Neugebauer
- />Faculty of Health - School of Medicine, Witten/Herdecke University, Ostmerheimer Strasse 200, Building 38, 51109 Cologne, Germany
| | - Yves Ozier
- />Division of Anaesthesia, Intensive Care and Emergency Medicine, Brest University Hospital, Boulevard Tanguy Prigent, 29200 Brest, France
| | - Louis Riddez
- />Department of Surgery and Trauma, Karolinska University Hospital, 171 76 Solna, Sweden
| | - Arthur Schultz
- />Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Lorenz Boehler Trauma Centre, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Jean-Louis Vincent
- />Department of Intensive Care, Erasme University Hospital, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium
| | - Donat R. Spahn
- />Institute of Anaesthesiology, University of Zurich and University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
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Massaro AM, Doerfler S, Nawalinski K, Michel B, Driscoll N, Ju C, Patel H, Quattrone F, Frangos S, Maloney-Wilensky E, Sean Grady M, Stein SC, Kasner SE, Kumar MA. Thromboelastography defines late hypercoagulability after TBI: a pilot study. Neurocrit Care 2016; 22:45-51. [PMID: 25127903 DOI: 10.1007/s12028-014-0051-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Traumatic brain injury (TBI) is associated with a hypercoagulable state, the mechanism and duration of which remain unclear. We sought to determine whether thromboelastography (TEG) analysis could identify the hypercoagulable state after TBI, as defined by elevations in maximal amplitude (MA), thrombus generation (TG), G value (G), and alpha angle (αA). METHODS Patients with moderate-severe TBI, defined primarily as a GCS <12, admitted between 1/2012 and 8/2013 were eligible for enrolment in this prospective cohort study. TEG profiles were obtained between 0-24 h (T1), 24-48 h (T2), 48-72 h (T3), 72-96 h (T4), and 96-120 h (T5) after admission. Early TEG was defined as 0-48 h, and late TEG was defined as >48 h. RESULTS Twenty five patients (80 % men) and 7 age- and sex-matched control subjects were studied. Median age was 38 years (range 18-85). Early MA was [63.6 mm (60.5, 67.4)] versus late MA [69.9 mm (65.2,73.9); p = 0.02], early TG was [763.3 mm/min (712.8, 816.2)] versus late TG [835.9 mm/min (791.2,888.3); p = 0.02], and early G was [8.8 d/cm(2) (7.7,10.4)] versus late G [11.6 d/cm(2) (9.4,14.1); p = 0.02]. Study patients had higher MA (p = 0.02), TG (p = 0.03), and G (p = 0.02) values at T5 compared to controls. There was a linear increase per day of MA by 2.6 mm (p = 0.001), TG 31.9 mm/min (p ≤ 0.001), and G value by 1.3 d/cm(2) (p ≤ 0.001) when clustered by pairs in regression analysis. Lower MA values trended toward home discharge (p = 0.08). CONCLUSION The data suggest a progressive and delayed hypercoagulable state observed days after initial TBI. The hypercoagulable state may reflect excess platelet activity.
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Affiliation(s)
- Allie M Massaro
- Department of Neurology, Perelman School of Medicine and the Hospital of the University of Pennsylvania, 3 West Gates Building, 3400 Spruce Street, Philadelphia, PA, 19104, USA,
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Monitoring of hematological and hemostatic parameters in neurocritical care patients. Neurocrit Care 2015; 21 Suppl 2:S168-76. [PMID: 25208669 DOI: 10.1007/s12028-014-0023-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Anemia and bleeding are paramount concerns in neurocritical care and often relate to the severity of intracranial hemorrhage. Anemia is generally associated with worse outcomes, and efforts to minimize anemia through reduced volume of blood sampled are encouraged. Point-of-care-testing reliably detects the use of non-steroidal anti-inflammatory drugs that may worsen bleeding and reduce platelet activity, particularly in patients with intracerebral hemorrhage. How best to monitor the effect of platelet transfusion or platelet-activating therapy is not well studied. For patients known to take novel oral anticoagulants, drug-specific coagulation tests before neurosurgical intervention are prudent.
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Folkerson LE, Sloan D, Cotton BA, Holcomb JB, Tomasek JS, Wade CE. Predicting progressive hemorrhagic injury from isolated traumatic brain injury and coagulation. Surgery 2015; 158:655-61. [PMID: 26067457 DOI: 10.1016/j.surg.2015.02.029] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Revised: 02/17/2015] [Accepted: 02/19/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Progressive hemorrhagic injury (PHI) in traumatic brain injury (TBI) patients is associated with poor outcomes. Early prediction of PHI is difficult yet vital. We hypothesize that TBI subtype and coagulation would be predictors of PHI. METHODS This was a retrospective analysis of highest level activation adult trauma patients with evidence of TBI (head Abbreviated Injury Scale ≥3). Coagulopathy was determined using rapid thrombelastography (r-TEG), complete blood counts, and conventional coagulation tests obtained on arrival. Patients were dichotomized into PHI and stable groups based on head computerized CT. Subtypes of TBI included subdural hematoma, intraparenchymal contusions (IPC), subarachnoid hemorrhage, epidural hematoma, and combined. Data are reported as median values with interquartile range (IQR). Multivariate logistic regression was used to assess the effect of subtype and coagulation on PHI. RESULTS We included 279 isolated TBI patients who met study criteria. There were 157 patients (56%) who experienced PHI; 122 (44%) were stable on repeat CT. Patients with PHI were older, had fewer hospital-free days, and higher mortality (all P < .001). No differences were noted in r-TEG parameters between groups; however, coagulopathy and age were independent predictors of progression in all subtypes (odds ratio [OR], 1.81; 95% CI, 1.09-3.01 [P = .021]; OR, 1.02, 95% CI, 1.01-1.04 [P = .006]). Controlling for age, Glasgow Coma Scale score, and coagulopathy, patients with IPC were more likely to experience PHI (OR, 4.49; 95% CI, 2.24-8.98; P < .0001). CONCLUSION This study demonstrates that older patients with coagulation abnormalities and IPC on admission are more likely to experience PHI, identifying a target population for earlier therapies.
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Affiliation(s)
- Lindley E Folkerson
- Center for Translational Injury Research, University of Texas Health Science Center, Houston, TX; Department of Surgery, University of Texas Health Science Center, Houston, TX.
| | - Duncan Sloan
- Center for Translational Injury Research, University of Texas Health Science Center, Houston, TX; Department of Surgery, University of Texas Health Science Center, Houston, TX
| | - Bryan A Cotton
- Center for Translational Injury Research, University of Texas Health Science Center, Houston, TX; Department of Surgery, University of Texas Health Science Center, Houston, TX
| | - John B Holcomb
- Center for Translational Injury Research, University of Texas Health Science Center, Houston, TX; Department of Surgery, University of Texas Health Science Center, Houston, TX
| | - Jeffrey S Tomasek
- Center for Translational Injury Research, University of Texas Health Science Center, Houston, TX; Department of Surgery, University of Texas Health Science Center, Houston, TX
| | - Charles E Wade
- Center for Translational Injury Research, University of Texas Health Science Center, Houston, TX; Department of Surgery, University of Texas Health Science Center, Houston, TX
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Kimpton G, Dabbous B, Leach P. New oral anticoagulant and antiplatelet agents for neurosurgeons. Br J Neurosurg 2015; 29:614-21. [DOI: 10.3109/02688697.2015.1029433] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- George Kimpton
- Cardiff University School of Medicine, Heath Park, Cardiff, Wales, UK
| | - Bassam Dabbous
- Department of Neurosurgery, University Hospital of Wales, Cardiff, Wales, UK
| | - Paul Leach
- Department of Neurosurgery, University Hospital of Wales, Cardiff, Wales, UK
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Hunt H, Stanworth S, Curry N, Woolley T, Cooper C, Ukoumunne O, Zhelev Z, Hyde C. Thromboelastography (TEG) and rotational thromboelastometry (ROTEM) for trauma induced coagulopathy in adult trauma patients with bleeding. Cochrane Database Syst Rev 2015; 2015:CD010438. [PMID: 25686465 PMCID: PMC7083579 DOI: 10.1002/14651858.cd010438.pub2] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Trauma-induced coagulopathy (TIC) is a disorder of the blood clotting process that occurs soon after trauma injury. A diagnosis of TIC on admission is associated with increased mortality rates, increased burdens of transfusion, greater risks of complications and longer stays in critical care. Current diagnostic testing follows local hospital processes and normally involves conventional coagulation tests including prothrombin time ratio/international normalized ratio (PTr/INR), activated partial prothrombin time and full blood count. In some centres, thromboelastography (TEG) and rotational thromboelastometry (ROTEM) are standard tests, but in the UK they are more commonly used in research settings. OBJECTIVES The objective was to determine the diagnostic accuracy of thromboelastography (TEG) and rotational thromboelastometry (ROTEM) for TIC in adult trauma patients with bleeding, using a reference standard of prothrombin time ratio and/or the international normalized ratio. SEARCH METHODS We ran the search on 4 March 2013. Searches ran from 1970 to current. We searched The Cochrane Library, MEDLINE (OvidSP), EMBASE Classic and EMBASE, eleven other databases, the web, and clinical trials registers. The Cochrane Injuries Group's specialised register was not searched for this review as it does not contain diagnostic test accuracy studies. We also screened reference lists, conducted forward citation searches and contacted authors. SELECTION CRITERIA We included all cross-sectional studies investigating the diagnostic test accuracy of TEG and ROTEM in patients with clinically suspected TIC, as well as case-control studies. Participants were adult trauma patients in both military and civilian settings. TIC was defined as a PTr/INR reading of 1.2 or greater, or 1.5 or greater. DATA COLLECTION AND ANALYSIS We piloted and performed all review stages in duplicate, including quality assessment using the QUADAS-2 tool, adhering to guidance in the Cochrane Handbook for Diagnostic Test Accuracy Reviews. We analysed sensitivity and specificity of included studies narratively as there were insufficient studies to perform a meta-analysis. MAIN RESULTS Three studies were included in the final analysis. All three studies used ROTEM as the test of global haemostatic function, and none of the studies used TEG. Tissue factor-activated assay EXTEM clot amplitude (CA) was the focus of the accuracy measurements in blood samples taken near to the point of admission. These CAs were not taken at a uniform time after the start of the coagulopathic trace; the time varied from five minutes, to ten minutes and fifteen minutes. The three included studies were conducted in the UK, France and Afghanistan in both civilian and military trauma settings. In two studies, median Injury Severity Scores were 12, inter-quartile range (IQR) 4 to 24; and 22, IQR 12 to 34; and in one study the median New Injury Severity Score was 34, IQR 17 to 43.There were insufficient included studies examining each of the three ROTEM CAs at 5, 10 and 15 minutes to make meta-analysis and investigation of heterogeneity valid. The results of the included studies are thus reported narratively and illustrated by a forest plot and results plotted on the receiver operating characteristic (ROC) plane.For CA5 the accuracy results were sensitivity 70% (95% CI 47% to 87%) and specificity 86% (95% CI 82% to 90%) for one study, and sensitivity 96% (95% CI 88% to 100%) and specificity 58% (95% CI 44% to 72%) for the other.For CA10 the accuracy results were sensitivity 100% (95% CI 94% to 100%) and specificity 70% (95% CI 56% to 82%).For CA15 the accuracy results were sensitivity 88% (95% CI 69% to 97%) and specificity 100% (95% CI 94% to 100%).No uninterpretable ROTEM study results were mentioned in any of the included studies.Risk of bias and concerns around applicability of findings was low across all studies for the patient and flow and timing domains. However, risk of bias and concerns around applicability of findings for the index test domain was either high or unclear, and the risk of bias for the reference standard domain was high. This raised concerns around the interpretation of the sensitivity and specificity results of the included studies, which may be misleading. AUTHORS' CONCLUSIONS We found no evidence on the accuracy of TEG and very little evidence on the accuracy of ROTEM. The value of accuracy estimates are considerably undermined by the small number of included studies, and concerns about risk of bias relating to the index test and the reference standard. We are unable to offer advice on the use of global measures of haemostatic function for trauma based on the evidence on test accuracy identified in this systematic review. This evidence strongly suggests that at present these tests should only be used for research. We consider more thoroughly what this research could be in the Discussion section.
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Affiliation(s)
- Harriet Hunt
- Institute of Health Research, University of Exeter Medical School, University of Exeter, Exeter, UK.
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Moderate elevations in international normalized ratio should not lead to delays in neurosurgical intervention in patients with traumatic brain injury. J Trauma Acute Care Surg 2015; 77:846-50; discussion 851. [PMID: 25423533 DOI: 10.1097/ta.0000000000000459] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND The management of severe traumatic brain injury (TBI) frequently involves invasive intracranial monitoring or cranial surgery. In our institution, intracranial procedures are often deferred until an international normalized ratio (INR) of less than 1.4 is achieved. There is no evidence that a moderately elevated INR is associated with increased risk of bleeding in patients undergoing neurosurgical intervention (NI). Thrombelastography (TEG) provides a functional assessment of clotting and has been shown to better predict clinically relevant coagulopathy compared with INR. We hypothesized that in patients with TBI, an elevated INR would result in increased time to NI and would not be associated with coagulation abnormalities based on TEG. METHODS A secondary analysis of prospectively collected data was performed in trauma patients with intracranial hemorrhage that underwent NI (defined as cranial surgery or intracranial pressure monitoring) within 24 hours of arrival. Time from admission to NI was recorded. TEG and routine coagulation assays were obtained at admission. Patients were considered hypocoagulable based on INR if their admission INR was greater than 1.4 (high INR). Manufacturer-specified values were used to determine hypocoagulability for each TEG variable. RESULTS Sixty-one patients (median head Abbreviated Injury Scale [AIS] score, 5) met entry criteria, of whom 16% had high INR. Demographic, physiologic, and injury scoring data were similar between groups. The median time to NI was longer in patients with high INR (358 minutes vs. 184 minutes, p = 0.027). High-INR patients were transfused more plasma than patients with an INR of 1.4 or less (2 U vs. 0 U, p = 0.01). There was no association between an elevated INR and hypocoagulability based on TEG. CONCLUSION TBI patients with an admission INR of greater than 1.4 had a longer time to NI. The use of plasma transfusion to decrease the INR may have contributed to this delay. A moderately elevated INR was not associated with coagulation abnormalities based on TEG. Routine plasma transfusion to correct a moderately elevated INR before NI should be reexamined. LEVEL OF EVIDENCE Diagnostic study, level III.
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Predictors of deterioration indicating a requirement for surgery in mild to moderate traumatic brain injury. Clin Neurol Neurosurg 2014; 127:97-100. [DOI: 10.1016/j.clineuro.2014.10.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 10/01/2014] [Accepted: 10/12/2014] [Indexed: 11/18/2022]
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Beynon C, Unterberg AW, Sakowitz OW. Point of care coagulation testing in neurosurgery. J Clin Neurosci 2014; 22:252-7. [PMID: 25439750 DOI: 10.1016/j.jocn.2014.07.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 07/13/2014] [Accepted: 07/28/2014] [Indexed: 11/19/2022]
Abstract
Impaired haemostasis represents a major risk factor for bleeding complications in neurosurgical patients. Coagulopathy commonly occurs after (brain) trauma and major haemorrhage or originates from antithrombotic medication. Point of care (POC) devices for bedside assessment of haemostatic parameters are increasingly used in various medical specialties. Results can be instantly implemented into treatment modalities as results are delivered within a very short period. POC coagulation testing has also shown beneficial effects in the treatment of neurosurgical patients. Identification of hyperfibrinolysis is achieved through viscoelastic testing of haemostasis and bedside coagulometry hastens the management of anticoagulated patients in need of urgent neurosurgical procedures. Results of POC testing of platelet function have been correlated with patient outcomes after traumatic brain injury and furthermore, quantification of antiplatelet medication effects on platelet activity is made possible through the use of these devices. Further studies are needed to characterise the potential of POC testing of platelet function. Antiplatelet medication plays an important role in regard to haemorrhagic and thromboembolic risks. Therefore, POC testing of platelet activity may improve treatment modalities in patients undergoing neurosurgical procedures as well as neurointerventional procedures (such as intracranial stent placement). In this article we summarise the available data of POC testing in neurosurgical patients and discuss the potential of these devices in this field. POC technologies have improved patient care in various medical fields and in our view it is likely that this will also apply to the field of neurosurgery.
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Affiliation(s)
- Christopher Beynon
- Department of Neurosurgery, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
| | - Andreas W Unterberg
- Department of Neurosurgery, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
| | - Oliver W Sakowitz
- Department of Neurosurgery, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
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Abstract
We aimed to elucidate platelet function in trauma patients, as it is pivotal for hemostasis yet remains scarcely investigated in this population. We conducted a prospective observational study of platelet aggregation capacity in 213 adult trauma patients on admission to an emergency department (ED). Inclusion criteria were trauma team activation and arterial cannula insertion on arrival. Blood samples were analyzed by multiple electrode aggregometry initiated by thrombin receptor agonist peptide 6 (TRAP) or collagen using a Multiplate device. Blood was sampled median 65 min after injury; median injury severity score (ISS) was 17; 14 (7%) patients received 10 or more units of red blood cells in the ED (massive transfusion); 24 (11%) patients died within 28 days of trauma: 17 due to cerebral injuries, four due to exsanguination, and three from other causes. No significant association was found between aggregation response and ISS. Higher TRAP values were associated with death due to cerebral injuries (P < 0.01, when corrected for ISS and platelet counts), whereas lower platelet counts were associated with massive transfusion (P < 0.01, when corrected for ISS and aggregation). An aggregation value of 145 IU by TRAP significantly identified death due to cerebral injury (sensitivity 71% and specificity 76%, P < 0.01) by receiver operating characteristic-curve analysis; the corresponding value of platelet counts for massive transfusion was 189 × 10/l (sensitivity 86%, specificity 75%, P < 0.01). We concluded there was no simple relationship between platelet aggregation and injury severity. Our results indicate that high platelet aggregation values are associated with fatality of cerebral injury.
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Sulaiman OM, Pabón GA, Cortés CC, Muñoz LA, Reyes LE, Arevalo JJ. Un resumen de la investigación en tromboelastografía. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2014. [DOI: 10.1016/j.rca.2014.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Sulaiman OM, Pabón GA, Cortés CC, Muñoz LA, Reyes LE, Arevalo JJ. An overview of thrombelastography research. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2014. [DOI: 10.1016/j.rcae.2014.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Christiaans SC, Duhachek-Stapelman AL, Russell RT, Lisco SJ, Kerby JD, Pittet JF. Coagulopathy after severe pediatric trauma. Shock 2014; 41:476-490. [PMID: 24569507 PMCID: PMC4024323 DOI: 10.1097/shk.0000000000000151] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Trauma remains the leading cause of morbidity and mortality in the United States among children aged 1 to 21 years. The most common cause of lethality in pediatric trauma is traumatic brain injury. Early coagulopathy has been commonly observed after severe trauma and is usually associated with severe hemorrhage and/or traumatic brain injury. In contrast to adult patients, massive bleeding is less common after pediatric trauma. The classical drivers of trauma-induced coagulopathy include hypothermia, acidosis, hemodilution, and consumption of coagulation factors secondary to local activation of the coagulation system after severe traumatic injury. Furthermore, there is also recent evidence for a distinct mechanism of trauma-induced coagulopathy that involves the activation of the anticoagulant protein C pathway. Whether this new mechanism of posttraumatic coagulopathy plays a role in children is still unknown. The goal of this review is to summarize the current knowledge on the incidence and potential mechanisms of coagulopathy after pediatric trauma and the role of rapid diagnostic tests for early identification of coagulopathy. Finally, we discuss different options for treating coagulopathy after severe pediatric trauma.
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Affiliation(s)
- Sarah C Christiaans
- Department of Anesthesiology, University of Alabama at Birmingham, AL
- Department of Surgery, University of Alabama at Birmingham, AL
| | | | | | - Steven J Lisco
- Department of Anesthesiology, University of Nebraska Medical Center, NE
| | - Jeffrey D Kerby
- Department of Surgery, University of Alabama at Birmingham, AL
| | - Jean-François Pittet
- Department of Anesthesiology, University of Alabama at Birmingham, AL
- Department of Surgery, University of Alabama at Birmingham, AL
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Kawano-Castillo J, Ward E, Elliott A, Wetzel J, Hassler A, McDonald M, Parker SA, Archeval-Lao J, Tremont C, Cai C, Pivalizza E, Rahbar MH, Grotta JC. Thrombelastography detects possible coagulation disturbance in patients with intracerebral hemorrhage with hematoma enlargement. Stroke 2014; 45:683-8. [PMID: 24425123 PMCID: PMC4115455 DOI: 10.1161/strokeaha.113.003826] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Intracerebral hemorrhage (ICH) has high morbidity, and hematoma enlargement (HE) causes worse outcome. Thrombelastography (TEG) measures the dynamics of clot formation and dissolution, and might be useful for assessing bleeding risk. We used TEG to detect changes in clotting in patients with and without HE after ICH. METHODS This prospective study included 64 patients with spontaneous ICH admitted from 2009 to 2013. TEG was performed within 6 hours of symptom onset and after 36 hours. Brain imaging was obtained at baseline and at 36±12 hours, and HE was defined as total volume increase>6 cc or >33%. TEG was also obtained from 57 controls. RESULTS Compared with controls, patients with ICH demonstrated faster and stronger clot formation; shorter R and delta (P<0.0001) at baseline; and higher MA and G (P<0.0001) at 36 hours; 11 patients had HE. After controlling for potential confounders, baseline K and delta were longer in HE+ compared with HE- patients, indicating that HE+ patients had slower clot formation (P<0.05). TEG was not different between HE+ and HE- patients at 36 hours. CONCLUSIONS TEG may detect important coagulation changes in patients with ICH. Clotting may be faster and stronger in immediate response to ICH, and a less robust response may be associated with HE. These findings deserve further investigation.
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Affiliation(s)
- Jorge Kawano-Castillo
- From the Department of Neurology, The University of Texas Medical School, Houston (J.K.-C., E.W., A.E., J.W., A.H., M.M., S.A.P., J.A.-L., C.T., E.P., J.C.G.); and Center for Clinical and Translational Sciences, University of Texas at Houston (C.C., M.H.R.)
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Acquired coagulopathy of traumatic brain injury defined by routine laboratory tests: which laboratory values matter? J Trauma Acute Care Surg 2014; 76:121-5. [PMID: 24368366 DOI: 10.1097/ta.0b013e3182a9cc95] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Coagulopathy is a major determinant of disability and death in patients with traumatic intracranial hemorrhage. However, the correlation between coagulopathy defined by routine coagulation tests and clinical outcomes in traumatic brain injury (TBI) is not well defined. The aim of our study was to determine the effect of coagulopathy diagnosed by routine laboratory tests on outcomes in TBI patients. METHODS We performed a retrospective cohort analysis of all isolated TBI patients exclusive of prehospital antiplatelet and anticoagulants with coagulation tests, namely, international normalized ratio (INR), platelet count, and partial thromboplastin time at admission. We defined coagulopathy by an INR of 1.5 or greater, partial thromboplastin time of 35 or greater, or platelet count of 100 × 10(3)/µL or less. Outcome measures were progression on repeat head computed tomography (RHCT), need for neurosurgical intervention, and mortality. RESULTS A total of 591 patients were enrolled, with a mean (SD) age of 47.4 (26.5) years and 67% being male. Of the patients, 13.3% were coagulopathic at admission. Platelet count of 100 × 10(3)/µL or less was an independent predictor of progression on RHCT (odd ratio [OR], 4; 95% confidence interval [CI], 1.7-10), need for neurosurgical intervention (OR, 3.6; 95% CI, 1.2-6.1), and mortality (OR, 2.6; 95% CI, 1.1-4.8). INR was an independent predictor of progression on RHCT (OR, 2; 95% CI, 1.1-4.3). CONCLUSION Routine bedside coagulation parameters at admission play an important role in predicting outcomes in blunt TBI. Platelet count is the strongest predictor for progression of initial insult on RHCT, need for neurosurgical intervention, and mortality. LEVEL OF EVIDENCE Prognostic study, level III.
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An overview of thrombelastography research☆. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2014. [DOI: 10.1097/01819236-201442040-00008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Laroche M, Kutcher ME, Huang MC, Cohen MJ, Manley GT. Coagulopathy after traumatic brain injury. Neurosurgery 2012; 70:1334-45. [PMID: 22307074 DOI: 10.1227/neu.0b013e31824d179b] [Citation(s) in RCA: 135] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Traumatic brain injury has long been associated with abnormal coagulation parameters, but the exact mechanisms underlying this phenomenon are poorly understood. Coagulopathy after traumatic brain injury includes hypercoagulable and hypocoagulable states that can lead to secondary injury by either the induction of microthrombosis or the progression of hemorrhagic brain lesions. Multiple hypotheses have been proposed to explain this phenomenon, including the release of tissue factor, disseminated intravascular coagulation, hyperfibrinolysis, hypoperfusion with protein C activation, and platelet dysfunction. The diagnosis and management of these complex patients are difficult given the lack of understanding of the underlying mechanisms. The goal of this review is to summarize the current knowledge regarding the mechanisms of coagulopathy after blunt traumatic brain injury. The current and emerging diagnostic tools, radiological findings, treatment options, and prognosis are discussed.
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Affiliation(s)
- Mathieu Laroche
- Department of Neurological Surgery, University of California, San Francisco, California 94110, USA
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Admission Rapid Thrombelastography Can Replace Conventional Coagulation Tests in the Emergency Department. Ann Surg 2012; 256:476-86. [DOI: 10.1097/sla.0b013e3182658180] [Citation(s) in RCA: 313] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Davis PK, Musunuru H, Walsh M, Cassady R, Yount R, Losiniecki A, Moore EE, Wohlauer MV, Howard J, Ploplis VA, Castellino FJ, Thomas SG. Platelet Dysfunction is an Early Marker for Traumatic Brain Injury-Induced Coagulopathy. Neurocrit Care 2012; 18:201-8. [DOI: 10.1007/s12028-012-9745-6] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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