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Thromboelastography

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https://www.readbyqxmd.com/read/27928886/f376a-m388a-solulin-a-new-promising-antifibrinolytic-for-severe-haemophilia-a
#1
J Parcq, K U Petersen, A Borel-Derlon, P Gautier, M Ebel, D Vivien, Y Repessé
INTRODUCTION: Haemophilia is a major bleeding disorder due to a deficiency of procoagulant factor VIII (type A) or IX (type B). The treatment is substitutive and based on infusion of factor concentrates. Main limitations of this therapy are cost, short factor half-life and the development of inhibitors (up to 30% of severe HA patients). An important aggravating factor of haemophilia is due to a premature fibrinolysis, directing attention to the therapeutic potential of suitable antifibrinolytics...
December 8, 2016: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/27901294/performance-of-functional-fibrinogen-thromboelastography-in-children-undergoing-congenital-heart-surgery
#2
Nischal K Gautam, Chunyan Cai, Olga Pawelek, Muhammad B Rafique, Davide Cattano, Evan G Pivalizza
BACKGROUND: Functional Fibrinogen assay of the Thromboelastography (FFTEG), a whole blood viscoelastic hemostatic assay, has been used to estimate fibrinogen levels in adult patients undergoing major surgery but its performance in pediatric patients undergoing cardiac surgery requires evaluation. In this study, we evaluate the correlation between FFTEG parameters and standard laboratory tests for fibrinogen and platelet counts before and after cardiopulmonary bypass in children undergoing repair for congenital heart disease...
November 30, 2016: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/27894845/thromboelastography-demonstrates-perioperative-hypercoagulability-in-hepato-pancreato-biliary-patients-and-supports-routine-administration-of-preoperative-and-early-postoperative-venous-thromboembolism-chemoprophylaxis
#3
Anh-Thu Le, Jennifer W Harris, Erin Maynard, Sean P Dineen, Ching-Wei D Tzeng
BACKGROUND: We hypothesized hepato-pancreato-biliary (HPB) surgery patients are more likely to be hypercoagulable than hypocoagulable, and that bleeding risks from VTE chemoprophylaxis are low. This study sought to use thromboelastography (TEG) to compare coagulation profiles with bleeding/thrombotic events in HPB patients receiving standardized perioperative chemoprophylaxis. METHODS: Consecutive patients undergoing HPB resections by three surgeons at one institution (January 2014-December 2015) received preoperative and early postoperative VTE chemoprophylaxis and were evaluated with TEGs...
November 25, 2016: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/27893618/early-resuscitation-with-lyophilized-plasma-provides-equal-neuroprotection-compared-with-fresh-frozen-plasma-in-a-large-animal-survival-model-of-traumatic-brain-injury-and-hemorrhagic-shock
#4
Ihab Halaweish, Ted Bambakidis, Vahagn C Nikolian, Patrick Georgoff, Peter Bruhn, Patryk Piascik, Lisa Buckley, Ashok Srinivasan, Baoling Liu, Yongqing Li, Hasan B Alam
BACKGROUND: Combined traumatic brain injury (TBI) and hemorrhagic shock (HS) is highly lethal. In previous models of combined TBI + HS, we showed that early resuscitation with fresh frozen plasma (FFP) improves neurologic outcomes. Delivering FFP, however, in austere environments is difficult. Lyophilized plasma (LP) is a logistically superior alternative to FFP, but data are limited regarding its efficacy for treatment of TBI. We conducted this study to determine the safety and long-term outcomes of early treatment with LP in a large animal model of TBI + HS...
December 2016: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/27889194/usefulness-of-thromboelastography-in-the-detection-and-management-of-tissue-plasminogen-activator-associated-hyperfibrinolysis
#5
Francesca Rosafio, Laura Vandelli, Guido Bigliardi, Francesco Cavallieri, Maria Luisa Dell'Acqua, Livio Picchetto, Andrea Zini
Rotation thromboelastometry is a viscoelastometric method that provides a rapid assessment of a patient's hemostatic processes in emergency settings, allowing prompt identification of specific coagulation abnormalities. Its results thus might guide targeted replacement therapy in hemorrhagic conditions, in case of platelet or coagulation factor deficiency, or hyperfibrinolysis, which is difficult to identify otherwise. Although currently used in emergency and traumatic surgery, there are limited data about thromboelastometry in ischemic stroke, particularly in monitoring the coagulative response to recombinant tissue plasminogen activator after intravenous thrombolysis (IVT)...
November 23, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27887785/thromboelastography-teg%C3%A2-demonstrates-that-tinzaparin-4500-international-units-has-no-detectable-anticoagulant-activity-after-caesarean-section
#6
S Griffiths, C Woo, V Mansoubi, A Riccoboni, A Sabharwal, S Napier, M Columb, M Laffan, G Stocks
BACKGROUND: Low molecular weight heparin is routinely used for thromboprophylaxis in pregnancy and the puerperium. Consensus guidelines recommend waiting 10-12h after administration of a thromboprophylactic dose of low molecular weight heparin before performing a neuraxial block or removing an epidural catheter. Thromboelastography (TEG®) has been reported to be sensitive to the effects of enoxaparin 4h after administration. The purpose of this study was to use TEG to examine coagulation changes in the first 10h after a thromboprophylactic dose of tinzaparin in an attempt to ratify the current consensus guidelines about timing of neuraxial blockade and epidural catheter removal...
October 8, 2016: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/27876785/characterization-of-the-annonaceous-acetogenin-annonacinone-a-natural-product-inhibitor-of-plasminogen-activator-inhibitor-1
#7
Stéphane Pautus, Mouad Alami, Fréderic Adam, Guillaume Bernadat, Daniel A Lawrence, Allan De Carvalho, Gilles Ferry, Alain Rupin, Abdallah Hamze, Pierre Champy, Natacha Bonneau, Philippe Gloanec, Jean-Louis Peglion, Jean-Daniel Brion, Elsa P Bianchini, Delphine Borgel
Plasminogen activator inhibitor-1 (PAI-1) is the main inhibitor of the tissue type and urokinase type plasminogen activators. High levels of PAI-1 are correlated with an increased risk of thrombotic events and several other pathologies. Despite several compounds with in vitro activity being developed, none of them are currently in clinical use. In this study, we evaluated a novel PAI-1 inhibitor, annonacinone, a natural product from the Annonaceous acetogenins group. Annonacinone was identified in a chromogenic screening assay and was more potent than tiplaxtinin...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27869629/coagulation-profile-of-patients-with-adolescent-idiopathic-scoliosis-undergoing-posterior-spinal-fusion
#8
Patrick Bosch, Tanya S Kenkre, Joanne A Londino, Antonio Cassara, Charles Yang, Jonathan H Waters
BACKGROUND: Blood loss and transfusion requirements during posterior spinal fusion for adolescent idiopathic scoliosis remain a concern. The mechanism of bleeding in these patients is poorly characterized. Thromboelastography is a comprehensive test of a patient's coagulation system commonly used in cardiac surgical procedures. It has not been well studied for use in patients with adolescent idiopathic scoliosis. METHODS: A prospective, observational study of the coagulation profile of patients with adolescent idiopathic scoliosis undergoing posterior spinal fusion is presented...
October 19, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27865298/the-value-of-thromboelastography-for-bleeding-risk-prediction-in-hematologic-diseases
#9
Yuzhu He, Xing Xin, Yudi Geng, Ning Tang, Jianfeng Zhou, Dengju Li
BACKGROUND: This study aimed to explore the correlations between thromboelastography (TEG) parameters with platelet (PLT) count and fibrinogen and to evaluate the value of the maximal amplitude (MA) for bleeding risk prediction. METHODS: A total of 1,559 patients with hematologic diseases underwent PLT counting and TEG tests, and 1,201 of these patients underwent conventional coagulation tests. Patients were divided into a bleeding group and a nonbleeding group according to their clinical records...
November 2016: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/27861367/impact-of-acute-kidney-injury-on-coagulation-in-adult-minimal-change-nephropathy
#10
Meng-Jie Huang, Ri-Bao Wei, Ting-Yu Su, Yang Wang, Qing-Ping Li, Xi Yang, Xiao-Meng Lv, Xiang-Mei Chen
A hypercoagulable state exists in patients with nephrotic syndrome (NS), which more easily leads to venous thromboembolism (VTE). However, whether acute kidney injury (AKI), a common complication of NS, affects the hypercoagulable state and VTE has rarely been elucidated. In this study, we aimed to explore coagulation changes and analyze relevant influencing factors in NS-AKI patients.A total of 269 consecutive NS patients with minimal change disease (MCD) between 2011 and 2016 were included in this observational study...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27858409/reference-values-for-coagulation-assessment-in-full-term-newborns
#11
Lucia Mirabella, Antonella Cotoia, Giusj Colacicco, Livio Tullo, Potito Salatto, Giuseppina Mollica, Karim Mariano, Michele Dambrosio, Gilda Cinnella
BACKGROUND: Most data in the literature report reduced coagulation activities in the first few days of life with respect to adults and the effects of these differences must be considered when diagnosing and treating haemostatic disorders. Management of pediatric population is further complicated by the lack of age-related reference values and by unreliability of hemostatic tests currently used while an accurate interpretation of results are required to reduce the cases of inappropriate investigation...
November 18, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27850733/1096-pharmacist-driven-use-of-thromboelastography-to-encourage-vte-prophylaxis-in-liver-failure-patients
#12
Chris Viesselmann, Jennifer Garber, Anne Rose, Jeffrey Fish
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27809922/analysis-of-thromboelastography-pt-aptt-and-fibrinogen-in-intraosseous-and-venous-samples-an-experimental-study
#13
Gunnar Strandberg, Miklós Lipcsey, Mats Eriksson, Norbert Lubenow, Anders Larsson
BACKGROUND: Laboratory analysis of coagulation is often important in emergencies. If vascular access is challenging, intraosseous catheterization may be necessary for treatment. We studied the analysis of coagulation parameters in intraosseous aspirate during stable conditions and after major haemorrhage in a porcine model. METHODS: Ten anesthetized pigs received central venous and intraosseous catheters and samples were taken for analysis of thromboelastography (TEG), prothrombin time (PT), activated partial thromboplastin time (APTT) and fibrinogen concentration...
November 3, 2016: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/27805439/effect-of-aminocaproic-acid-on-clot-strength-and-clot-lysis-of-canine-blood-determined-by-use-of-an-in-vitro-model-of-hyperfibrinolysis
#14
Jamie C Brown, Benjamin M Brainard, Daniel J Fletcher, Ben Nie, Robert D Arnold, Chad W Schmiedt
OBJECTIVE To determine pharmacodynamic and pharmacokinetic profiles of aminocaproic acid (ACA) by use of a thromboelastography (TEG)-based in vitro model of hyperfibrinolysis and high-performance liquid chromatography-mass spectrometry. ANIMALS 5 healthy adult dogs. PROCEDURES A single dose of injectable ACA (20, 50, or 100 mg/kg) or an ACA tablet (approximately 100 mg/kg) was administered orally. Blood samples were collected at 0, 15, 30, 45, 60, 90, 120, and 240 minutes after ACA administration for pharmacokinetic analysis...
November 2016: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/27799942/stent-thrombosis-patients-with-hyporesponsiveness-to-clopidogrel-prasugrel-and-ticagrelor-a-case-series-using-short-thromboelastography
#15
Bartosz Olechowski, Alexander Ashby, Nalyaka Sambu, Michael Mahmoudi, Nick Curzen
Patients after percutaneous coronary intervention (PCI) with stent implantation and functional hyporesponsiveness to P2Y12 inhibitors are at higher risk of ischaemic events, particularly stent thrombosis (ST). It is currently not routine practice to assess the functional response to these agents. However, concern over functional hyporesponsiveness to clopidogrel has led to widespread uptake of prasugrel and ticagrelor as the default P2Y12 inhibitor after stent implantation in patients with acute coronary syndrome...
2016: Case Reports in Medicine
https://www.readbyqxmd.com/read/27785858/a-prospective-diagnostic-accuracy-study-evaluating-rotational-thromboelastometry-and-thromboelastography-in-100-patients-with-von-willebrand-disease
#16
D E Schmidt, A Majeed, M Bruzelius, J Odeberg, M Holmström, A Ågren
INTRODUCTION: Rotational thromboelastometry (ROTEM(®) ) and thromboelastography (TEG(®) ) are increasingly used in the perioperative and emergency assessment of bleeding tendencies. The diagnostic value of ROTEM and TEG for von Willebrand disease (VWD) remains to be established. AIM: To investigate whether ROTEM and TEG can discriminate patients with VWD from healthy controls. METHODS: Rotational thromboelastometry and TEG whole blood coagulation profiles were compared between VWD patients (n = 100) and healthy controls (n = 89)...
October 26, 2016: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/27780186/preoperative-thromboelastography-as-a-sensitive-tool-predicting-those-at-risk-of-developing-early-hepatic-artery-thrombosis-after-adult-liver-transplantation
#17
Firas Zahr Eldeen, Garrett R Roll, Carlos Derosas, Rajashankar Rao, Muhammad S Khan, Bridget K Gunson, James Hodson, Hynek Mergental, Ben-Hur Ferraz-Neto, John Isaac, Paolo Muiesan, Darius F Mirza, Asim Iqbal, M Thamara P R Perera
BACKGROUND: Whilst causes of hepatic artery thrombosis (HAT) after liver transplantation (LT) are multifactorial, early HAT (E-HAT) remains pertinent complication impacting on graft and patient survival. Currently there is no screening tool that would identify patients with increased risk of developing E-HAT. METHODS: We analyzed the native procoagulant state of LT recipients, identified through pretransplant thromboelastographic (TEG) data among other known risk factors, to identify risk factors for E-HAT...
November 2016: Transplantation
https://www.readbyqxmd.com/read/27775063/the-effect-of-physiological-levels-of-south-african-puff-adder-bitis-arietans-snake-venom-on-blood-cells-an-in-vitro-model
#18
Morné A Strydom, Janette Bester, Sthembile Mbotwe, Etheresia Pretorius
A significant burden of illness is caused globally by snakebites particularly by the puff adder, Bitis arietans. Presently there is no reliable and rapid method to confirm envenomation on blood chemistry; although coagulation parameters like prothrombin time, partial thromboplastin time, international normalized ratio and also serum electrolytes are tested. Here, we found that direct in vitro exposure of physiological relevant whole venom levels to human healthy blood (N = 32), caused significant physiological changes to platelet activity using a hematology analyzer, and measuring occlusion time, as well as lyses time, with the global thrombosis test (GTT)...
October 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27765582/major-liver-resection-systemic-fibrinolytic-activity-and-the-impact-of-tranexamic-acid
#19
Paul J Karanicolas, Yulia Lin, Jordan Tarshis, Calvin H L Law, Natalie G Coburn, Julie Hallet, Barto Nascimento, Janusz Pawliszyn, Stuart A McCluskey
BACKGROUND: Hyperfibrinolysis may occur due to systemic inflammation or hepatic injury that occurs during liver resection. Tranexamic acid (TXA) is an antifibrinolytic agent that decreases bleeding in various settings, but has not been well studied in patients undergoing liver resection. METHODS: In this prospective, phase II trial, 18 patients undergoing major liver resection were sequentially assigned to one of three cohorts: (i) Control (no TXA); (ii) TXA Dose I - 1 g bolus followed by 1 g infusion over 8 h; (iii) TXA Dose II - 1 g bolus followed by 10 mg/kg/hr until the end of surgery...
October 17, 2016: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/27756812/the-effectiveness-of-10-years-of-interventions-to-control-postoperative-bleeding-in-adult-cardiac-surgery
#20
Marco Ranucci, Ekaterina Baryshnikova, Valeria Pistuddi, Lorenzo Menicanti, Alessandro Frigiola
OBJECTIVES: Postoperative bleeding in cardiac surgery remains an important complication, leading to increased morbidity and mortality. Different interventions are possible to prevent/treat postoperative bleeding. The present study aims to investigate the effectiveness of these interventions in a real-world scenario. METHODS: This is a retrospective study based on 19 670 consecutive adult cardiac surgery patients operated from 2000 to 2015. During the study period, the following interventions have been applied and tested for effectiveness with a before versus after analysis: thromboelastography (TEG)-based diagnosis and treatment in actively bleeding patients; platelet function tests (PFTs); timing of surgery based on PFTs; fresh frozen plasma (FFP)-free strategy using prothrombin complex concentrate and fibrinogen concentrate...
October 17, 2016: Interactive Cardiovascular and Thoracic Surgery
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