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Mehic D, Assinger A, Gebhart J. Utility of Global Hemostatic Assays in Patients with Bleeding Disorders of Unknown Cause. Hamostaseologie 2024. [PMID: 38950624 DOI: 10.1055/a-2330-9112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024] Open
Abstract
Bleeding disorder of unknown cause (BDUC) is a diagnosis of exclusion after exhaustive evaluation of plasmatic coagulation and platelet function. This review explores the utility of global hemostatic assays as confirmatory tests and in elucidating the pathophysiology of BDUC. Unlike traditional hemostatic tests that focus on coagulation factors, global assays are conducted both in plasma and also whole blood. These assays provide a more comprehensive understanding of the cell-based model of coagulation, aid in the identification of plasmatic factor abnormalities that may reduce hemostatic capacity, and allow for the assessment of impaired platelet-endothelial interactions under shear stress, as well as hyperfibrinolytic states. While clinical tests such as skin bleeding time and global assays such as PFA-100 exhibit limited diagnostic capacity, the role of viscoelastic testing in identifying hemostatic dysfunction in patients with BDUC remains unclear. Thrombin generation assays have shown variable results in BDUC patients; some studies demonstrate differences compared with healthy controls or reference values, whereas others question its clinical utility. Fibrinolysis assessment in vitro remains challenging, with studies employing euglobulin clot lysis time, plasma clot lysis time, and fluorogenic plasmin generation yielding inconclusive or conflicting results. Notably, recent studies suggest that microfluidic analysis unveils shear-dependent platelet function defects in BDUC patients, undetected by conventional platelet function assays. Overall, global assays might be helpful for exploring underlying hemostatic impairments, when conventional hemostatic laboratory tests yield no results. However, due to limited data and/or discrepant results, further research is needed to evaluate the utility of global assays as screening tools.
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Affiliation(s)
- Dino Mehic
- Clinical Division of Hematology and Hemostaseology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Alice Assinger
- Institute of Vascular Biology and Thrombosis Research, Centre of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Johanna Gebhart
- Clinical Division of Hematology and Hemostaseology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
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2
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Katz D, Farber M, Getrajdman C, Hamburger J, Reale S, Butwick A. The role of viscoelastic hemostatic assays for postpartum hemorrhage management and bedside intrapartum care. Am J Obstet Gynecol 2024; 230:S1089-S1106. [PMID: 38462250 DOI: 10.1016/j.ajog.2022.09.008] [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: 07/27/2022] [Revised: 09/06/2022] [Accepted: 09/06/2022] [Indexed: 03/12/2024]
Abstract
Viscoelastic hemostatic assays are point-of-care devices that assess coagulation and fibrinolysis in whole blood samples. These technologies provide numeric and visual information of clot initiation, clot strength, and clot lysis under low-shear conditions, and have been used in a variety of clinical settings and subpopulations, including trauma, cardiac surgery, and obstetrics. Emerging data indicate that these devices are useful for detecting important coagulation defects during major postpartum hemorrhage (especially low plasma fibrinogen concentration [hypofibrinogenemia]) and informing clinical decision-making for blood product use. Data from observational studies suggest that, compared with traditional formulaic approaches to transfusion management, targeted or goal-directed transfusion approaches using data from viscoelastic hemostatic assays are associated with reduced hemorrhage-related morbidity and lower blood product requirement. Viscoelastic hemostatic assays can also be used to identify and treat coagulation defects in patients with inherited or acquired coagulation disorders, such as factor XI deficiency or immune-mediated thrombocytopenia, and to assess hemostatic profiles of patients prescribed anticoagulant medications to mitigate the risk of epidural hematoma after neuraxial anesthesia and postpartum hemorrhage after delivery.
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Affiliation(s)
- Daniel Katz
- Department of Anesthesiology, Perioperative, and Pain Medicine, Icahn School of Medicine at Mount Sinai, New York, NY; Department of Obstetrics, Gynecology and Reproductive Science, Icahn School of Medicine at Mount Sinai, New York, NY.
| | - Michaela Farber
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA
| | - Chloe Getrajdman
- Department of Obstetrics, Gynecology and Reproductive Science, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Joshua Hamburger
- Department of Anesthesiology, Perioperative, and Pain Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Sharon Reale
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA
| | - Alexander Butwick
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA
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3
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Abstract
Viscoelastic testing methods examine the real-time formation of a clot in a whole blood sample, and include thromboelastography (TEG), rotational thromboelastometry (ROTEM), and several other testing platforms. They allow for concurrent assessment of multiple aspects of clotting, including plasmatic coagulation factors, platelets, fibrinogen, and the fibrinolytic pathway. This testing is rapid and may be performed at the point-of-care, allowing for prompt identification of coagulopathies to guide focused and rational administration of blood products as well as the identification of anticoagulant effect. With recent industry progression towards user-friendly, cartridge-based, portable instruments, viscoelastic testing has emerged in the 21st century as a powerful tool to guide blood transfusions in the bleeding patient, and to identify and treat both bleeding and thrombotic conditions in many operative settings, including trauma surgery, liver transplant surgery, cardiac surgery, and obstetrics. In these settings, the use of transfusion algorithms guided by viscoelastic testing data has resulted in widespread improvements in patient blood management as well as modest improvements in select patient outcomes. To address the increasingly wide adoption of viscoelastic methods and the growing number of medical and laboratory personnel tasked with implementing, performing, and interpreting these methods, this chapter provides an overview of the history, physiology, and technology behind viscoelastic testing, as well as a practical review of its clinical utility and current evidence supporting its use. Also included is a review of testing limitations and the contextual role played by viscoelastic methods among all coagulation laboratory testing.
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Affiliation(s)
- Timothy Carll
- Department of Pathology, University of Chicago, Chicago, IL, United States.
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4
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Drotarova M, Zolkova J, Belakova KM, Brunclikova M, Skornova I, Stasko J, Simurda T. Basic Principles of Rotational Thromboelastometry (ROTEM ®) and the Role of ROTEM-Guided Fibrinogen Replacement Therapy in the Management of Coagulopathies. Diagnostics (Basel) 2023; 13:3219. [PMID: 37892040 PMCID: PMC10606358 DOI: 10.3390/diagnostics13203219] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/28/2023] [Accepted: 10/04/2023] [Indexed: 10/29/2023] Open
Abstract
Rotational thromboelastometry (ROTEM) is a viscoelastic method, which provides a graphical and numerical representation of induced hemostasis in whole blood samples. Its ability to quickly assess the state of hemostasis is used in the management of bleeding from a variety of causes. The separate activation of particular parts of hemocoagulation in INTEM, EXTEM, and FIBTEM tests allows for a more comprehensive and faster evaluation of the missing component of hemostasis followed by targeted therapy. One of the most common cause of coagulopathy is trauma-induced coagulopathy. Fibrinogen replacement therapy by ROTEM allows for the use of a standard dosage of fibrinogen, which has been shown to be successful in preventing dilutional coagulopathy following colloid and crystalloid replacement and excessive amount of allogeneic blood transfusions. The best reflection of fibrinogen activity is observed in the FIBTEM assay, where fibrinogen replacement therapy is recommended at an MCF (maximum clot firmness) of FIBTEM < 10 mm and FIBTEM A10 < 7 mm. ROTEM also plays an important role in the diagnostic and management of inherited fibrinogen disorders. These can be manifested by bleeding complications, where changes in the MCF parameter are the most useful tool for assessing the effectiveness of fibrinogen replacement therapy. ROTEM-guided bleeding management algorithms effectively reduce the number of transfusions, healthcare costs, and complications, leading to the improvement of patient safety and overall health.
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Affiliation(s)
| | | | | | | | | | | | - Tomas Simurda
- National Centre of Hemostasis and Thrombosis, Department of Hematology and Transfusiology, Jessenius Faculty of Medicine in Martin, University Hospital in Martin, Comenius University in Bratislava, 036 01 Martin, Slovakia; (M.D.); (J.Z.); (K.M.B.); (M.B.); (I.S.); (J.S.)
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5
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Research on point-of-care tests in outpatient care in Germany: A scoping review and definition of relevant endpoints in evaluation studies. ZEITSCHRIFT FUR EVIDENZ, FORTBILDUNG UND QUALITAT IM GESUNDHEITSWESEN 2022; 174:1-10. [PMID: 36055890 DOI: 10.1016/j.zefq.2022.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/14/2022] [Accepted: 06/13/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND The fast turnaround time and user-friendliness of point-of-care tests (POCTs) offer a great potential to improve outpatient health care where clinical decisions have to be made during the physician-patient encounter and time resources are limited. The aim of this scoping review is to describe the extent and nature as well as gaps in German research activities on POCT in outpatient care. In addition, we define research endpoints that should be addressed in the comprehensive evaluation of POCTs targeted for outpatient care. METHODS We performed a scoping review with a systematic literature search in Medline (via PubMed), Scopus, Web of Science, Cochrane library and Google Scholar for German publications on POCT with relevance to German outpatient care published from January 2005 to November 2020. RESULTS Our literature search identified 2,200 unique records. After literature selection 117 articles were included in this scoping review. Just over half of the articles (67/117, 57.3%) were primary research studies with original data, while one third of all the studies (33.3%) were secondary research articles (e.g., review articles). The remaining articles were clinical recommendations / position papers (7/117, 6.0%) and other types of articles (3.4%). The majority of articles focused on POCT use in infectious diseases (44/117, 37.6%), diabetic syndromes (15.4%), cardiac disease (12.0%) or coagulopathies and thrombosis (10.3%), while the remaining articles did not specify the disease (13.7%) or investigated other diseases (11.1%). Similar to international studies, most primary research studies investigated the diagnostic performance of POCT (e.g., sensitivity, specificity). Evidence beyond diagnostic accuracy remains scarce, such as the impact on therapeutic decisions and practice routines, clinical effectiveness, and user perspectives. In line with this, interventional studies (such as RCTs) on the effectiveness of POCT use in German outpatient care are limited. We define six endpoint domains that should be addressed in the evaluation of POCTs targeted for outpatient care: (i) diagnostic performance, (ii) clinical performance, (iii) time and costs, (iv) impact on clinical routines / processes, (v) perspectives of medical professionals and patients, and (vi) broader aspects. CONCLUSION There is considerable research activity on POCTs targeted for use in outpatient care in Germany. Data on their potential benefits beyond diagnostic accuracy is often lacking and should be addressed in future POCT research studies.
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6
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Kanji R, Vandenbriele C, Arachchillage DRJ, Price S, Gorog DA. Optimal Tests to Minimise Bleeding and Ischaemic Complications in Patients on Extracorporeal Membrane Oxygenation. Thromb Haemost 2022; 122:480-491. [PMID: 33984868 DOI: 10.1055/a-1508-8230] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Patients supported with extracorporeal membrane oxygenation (ECMO) experience a very high frequency of bleeding and ischaemic complications, including stroke and systemic embolism. These patients require systemic anticoagulation, mainly with unfractionated heparin (UFH) to prevent clotting of the circuit and reduce the risk of arterial or venous thrombosis. Monitoring of UFH can be very challenging. While most centres routinely monitor the activated clotting time and activated partial thromboplastin time (aPTT) to assess UFH, measurement of anti-factor Xa (anti-Xa) level best correlates with heparin dose, and appears to be predictive of circuit thrombosis, although aPTT may be a better predictor of bleeding. Although monitoring of prothrombin time, platelet count and fibrinogen is routinely undertaken to assess haemostasis, there is no clear guidance available regarding the optimal test.Additional tests, including antithrombin level and thromboelastography, can be used for risk stratification of patients to try and predict the risks of thrombosis and bleeding. Each has their specific role, strengths and limitations. Increased thrombin generation may have a role in predicting thrombosis. Acquired von Willebrand syndrome is frequent with ECMO, contributing to bleeding risk and can be detected by assessing the von Willebrand factor activity-to-antigen ratio, while the platelet function analyser can be used in urgent situations to detect this, with a high negative predictive value. Tests of platelet aggregation can aid in the prediction of bleeding.To personalise management, a selection of complementary tests to collectively assess heparin-effect, coagulation, platelet function and platelet aggregation is proposed, to optimise clinical outcomes in these high-risk patients.
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Affiliation(s)
- Rahim Kanji
- Faculty of Medicine, National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Christophe Vandenbriele
- Department of Cardiovascular Diseases, University Hospitals Leuven, Leuven, Belgium.,Intensive Care Unit, Royal Brompton Hospital, London, United Kingdom
| | - Deepa R J Arachchillage
- Haematology Department, Royal Brompton Hospital, London, United Kingdom.,Centre for Haematology, Imperial College Healthcare NHS Trust & Imperial College, London, United Kingdom
| | - Susanna Price
- Faculty of Medicine, National Heart and Lung Institute, Imperial College, London, United Kingdom.,Intensive Care Unit, Royal Brompton Hospital, London, United Kingdom
| | - Diana Adrienne Gorog
- Faculty of Medicine, National Heart and Lung Institute, Imperial College, London, United Kingdom
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7
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Viscoelastic Hemostatic Assays: A Primer on Legacy and New Generation Devices. J Clin Med 2022; 11:jcm11030860. [PMID: 35160311 PMCID: PMC8836477 DOI: 10.3390/jcm11030860] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 01/28/2022] [Accepted: 02/02/2022] [Indexed: 02/06/2023] Open
Abstract
Viscoelastic hemostatic assay (VHAs) are whole blood point-of-care tests that have become an essential method for assaying hemostatic competence in liver transplantation, cardiac surgery, and most recently, trauma surgery involving hemorrhagic shock. It has taken more than three-quarters of a century of research and clinical application for this technology to become mainstream in these three clinical areas. Within the last decade, the cup and pin legacy devices, such as thromboelastography (TEG® 5000) and rotational thromboelastometry (ROTEM® delta), have been supplanted not only by cartridge systems (TEG® 6S and ROTEM® sigma), but also by more portable point-of-care bedside testing iterations of these legacy devices (e.g., Sonoclot®, Quantra®, and ClotPro®). Here, the legacy and new generation VHAs are compared on the basis of their unique hemostatic parameters that define contributions of coagulation factors, fibrinogen/fibrin, platelets, and clot lysis as related to the lifespan of a clot. In conclusion, we offer a brief discussion on the meteoric adoption of VHAs across the medical and surgical specialties to address COVID-19-associated coagulopathy.
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8
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Liew-Spilger AE, Sorg NR, Brenner TJ, Langford JH, Berquist M, Mark NM, Moore SH, Mark J, Baumgartner S, Abernathy MP. Viscoelastic Hemostatic Assays for Postpartum Hemorrhage. J Clin Med 2021; 10:3946. [PMID: 34501395 PMCID: PMC8432102 DOI: 10.3390/jcm10173946] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/26/2021] [Accepted: 08/29/2021] [Indexed: 12/15/2022] Open
Abstract
This article discusses the importance and effectiveness of viscoelastic hemostatic assays (VHAs) in assessing hemostatic competence and guiding blood component therapy (BCT) in patients with postpartum hemorrhage (PPH). In recent years, VHAs such as thromboelastography and rotational thromboelastometry have increasingly been used to guide BCT, hemostatic adjunctive therapy and prohemostatic agents in PPH. The three pillars of identifying hemostatic competence include clinical observation, common coagulation tests, and VHAs. VHAs are advantageous because they assess the cumulative contribution of all components of the blood throughout the entire formation of a clot, have fast turnaround times, and are point-of-care tests that can be followed serially. Despite these advantages, VHAs are underused due to poor understanding of correct technique and result interpretation, a paucity of widespread standardization, and a lack of large clinical trials. These VHAs can also be used in cases of uterine atony, preeclampsia, acute fatty liver of pregnancy, amniotic fluid embolism, placental abruption, genital tract trauma, surgical trauma, and inherited and prepartum acquired coagulopathies. There exists an immediate need for a point-of-care test that can equip obstetricians with rapid results on developing coagulopathic states. The use of VHAs in predicting and treating PPH, although in an incipient state, can fulfill this need.
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Affiliation(s)
- Alyson E. Liew-Spilger
- Department of Obstetrics and Gynecology, University of Oklahoma College of Medicine, Oklahoma City, OK 73104, USA;
| | - Nikki R. Sorg
- Indiana University School of Medicine South Bend Campus, Notre Dame, IN 46617, USA; (N.R.S.); (N.M.M.); (J.M.)
| | - Toby J. Brenner
- Division of Natural Sciences, Indiana Wesleyan University, Marion, IN 46953, USA;
| | - Jack H. Langford
- College of Pharmacy and Health Sciences, Butler University, Indianapolis, IN 46208, USA;
| | - Margaret Berquist
- College of Science, University of Notre Dame, Notre Dame, IN 46556, USA;
| | - Natalie M. Mark
- Indiana University School of Medicine South Bend Campus, Notre Dame, IN 46617, USA; (N.R.S.); (N.M.M.); (J.M.)
| | - Spencer H. Moore
- Marian University College of Osteopathic Medicine, Indianapolis, IN 46222, USA;
| | - Julie Mark
- Indiana University School of Medicine South Bend Campus, Notre Dame, IN 46617, USA; (N.R.S.); (N.M.M.); (J.M.)
| | - Sara Baumgartner
- Department of Obstetrics and Gynecology, Saint Joseph Regional Medical Center, Mishawaka, IN 46545, USA
| | - Mary P. Abernathy
- Department of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
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9
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Speybroeck J, Marsee M, Shariff F, Zackariya N, Grisoli A, Lune SV, Larson EE, Hatch J, McCauley R, Shariff F, Aversa JG, Son M, Agostini V, Campello E, Simioni P, Scărlătescu E, Kwaan H, Hartmann J, Fries D, Walsh M. Viscoelastic testing in benign hematologic disorders: Clinical perspectives and future implications of point-of-care testing to assess hemostatic competence. Transfusion 2021; 60 Suppl 6:S101-S121. [PMID: 33089936 DOI: 10.1111/trf.16088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 09/04/2020] [Accepted: 09/05/2020] [Indexed: 01/04/2023]
Abstract
Viscoelastic tests (VETs) have been used routinely for liver transplantation, cardiac surgery, and trauma, but only recently have found clinical utility in benign hematologic disorders. Therefore, guidelines for diagnosis and treatment of these disorders based on viscoelastic variables have been adapted from the existing transplant, cardiothoracic surgery, and trauma resuscitation literature. As a result, diagnostic and therapeutic strategies for benign hematologic disorders utilizing VETs are not uniform. Accordingly, even though there has been a recent increase in the utilization of VET for the diagnosis and treatment of such disorders, the literature is still in its early stages. Analysis of point-of-care viscoelastic tracings from benign hematologic disorders has the potential to allow prompt recognition of disease and to guide patient-specific intervention. Here we present a review describing the application of VETs to benign hematologic disorders.
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Affiliation(s)
- Jacob Speybroeck
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - Mathew Marsee
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - Faadil Shariff
- Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Nuha Zackariya
- Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Anne Grisoli
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - Stefani Vande Lune
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - Emilee E Larson
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - Jordan Hatch
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - Ross McCauley
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - Faisal Shariff
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana
| | - John G Aversa
- Department of General Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Michael Son
- Saint Joseph Regional Medical Center, Mishawaka, Indiana
| | - Vanessa Agostini
- Department of Transfusion Medicine, IRCC Polyclinic Hospital San Marino, Genoa, Italy
| | - Elena Campello
- Thrombotic and Hemorrhagic Diseases Unit, Department of Medicine, Padua University Hospital, Padua, Italy
| | - Paolo Simioni
- Thrombotic and Hemorrhagic Diseases Unit, Department of Medicine, Padua University Hospital, Padua, Italy
| | - Escaterina Scărlătescu
- Department of Anaesthesia and Intensive Care, Fundeni Clinical Institute, Bucharest, Romania
| | - Hau Kwaan
- Department of Hematology Oncology, Northwestern University School of Medicine, Chicago, Illinois
| | - Jan Hartmann
- Department of Medical Affairs, Haemonetics Corporation, Boston, Massachusetts
| | - Dietmar Fries
- Department of General and Surgical Critical Care Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Mark Walsh
- Indiana University School of Medicine, Notre Dame Campus, South Bend, Indiana.,Saint Joseph Regional Medical Center, Mishawaka, Indiana
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10
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McNicholas A, Sharma N, Rowe EL, Benotti SA, Braverman BR, Normandin PA. Adolescent With von Willebrand Disease Type 3 Spontaneous Abdominal Hemorrhage. J Emerg Nurs 2021; 47:661-668. [PMID: 34275529 DOI: 10.1016/j.jen.2021.04.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/21/2021] [Accepted: 04/21/2021] [Indexed: 10/20/2022]
Abstract
An adolescent female classified as unstable with a spontaneous abdominal hemorrhage was transferred to a level 1 pediatric trauma tertiary emergency department. Pertinent medical history included von Willebrand disease type 3, menorrhagia, and obesity. Preparation before patient arrival included mobilization of multidisciplinary medical team experts in hematology, pharmacy, blood bank, radiology, and nursing who provided lifesaving interventions. The administration of factor products, blood products, interventional radiology, emergent hepatic angiography, and embolization coordination resulted in a successful outcome. After an 18-day intensive hospital course, the patient returned home close to her baseline health status.
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11
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Rali AS, Salem AM, Gebre M, Garies TM, Taduru S, Bracey AW. Viscoelastic Haemostatic Assays in Cardiovascular Critical Care. Card Fail Rev 2021; 7:e01. [PMID: 33708416 PMCID: PMC7919676 DOI: 10.15420/cfr.2020.22] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 10/30/2020] [Indexed: 11/08/2022] Open
Abstract
The initiation and management of anticoagulation is a fundamental practice for a wide variety of indications in cardiovascular critical care, including the management of patients with acute MI, stroke prevention in patients with AF or mechanical valves, as well as the prevention of device thrombosis and thromboembolic events with the use of mechanical circulatory support and ventricular assist devices. The frequent use of antiplatelet and anticoagulation therapy, in addition to the presence of concomitant conditions that may lead to a propensity to bleed, such as renal and liver dysfunction, present unique challenges. The use of viscoelastic haemostatic assays provides an additional tool allowing clinicians to strike a delicate balance of attaining adequate anticoagulation while minimising the risk of bleeding complications. In this review, the authors discuss the role that viscoelastic haemostatic assay plays in cardiac populations (including cardiac surgery, heart transplantation, extracorporeal membrane oxygenation, acute coronary syndrome and left ventricular assist devices), and identify areas in need of further study.
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Affiliation(s)
- Aniket S Rali
- Division of Cardiovascular Medicine, Vanderbilt University Medical Centre Nashville, Tennessee, US
| | - Ahmed M Salem
- Division of Pulmonary, Critical Care and Sleep Medicine, Baylor College of Medicine Houston, Texas, US
| | - Melat Gebre
- Department of Anaesthesiology, Emory University School of Medicine Atlanta, Georgia, US
| | - Taylor M Garies
- Department of Nursing, Vanderbilt University Medical Centre Nashville, Tennessee, US
| | - Siva Taduru
- Department of Cardiovascular Diseases, University of Kansas Medical Centre Kansas City, Kansas, US
| | - Arthur W Bracey
- Department of Pathology and Immunology, Baylor College of Medicine Houston, Texas, US
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12
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Getrajdman C, Sison M, Yen C, Giordano M, Beilin Y, Katz D. Thromboelastometry-guided neuraxial anesthesia in a parturient with severe thrombocytopenia due to large granular lymphocytic leukemia. Blood Coagul Fibrinolysis 2021; 32:64-67. [PMID: 33196515 DOI: 10.1097/mbc.0000000000000970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Severe thrombocytopenia (platelet count <50 000/μl) in pregnancy is uncommon and is generally considered a contraindication to neuraxial anesthesia. We present a case of a parturient who presented with severe thrombocytopenia secondary to bone marrow failure. After receiving platelet and cryoprecipitate transfusions to correct coagulopathy as verified by thromboelastometry, neuraxial anesthesia was safely utilized.
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Affiliation(s)
| | - Matthew Sison
- Department of Anesthesiology, Perioperative and Pain Medicine
| | - Colleen Yen
- Department of Anesthesiology, Perioperative and Pain Medicine
| | | | - Yaakov Beilin
- Department of Anesthesiology, Perioperative and Pain Medicine
- Department of Obstetrics, Gynecology, and Reproductive Science, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Daniel Katz
- Department of Anesthesiology, Perioperative and Pain Medicine
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13
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Mondal S, Hollander KN, Ibekwe SO, Williams B, Tanaka K. Heyde Syndrome-Pathophysiology and Perioperative Implications. J Cardiothorac Vasc Anesth 2020; 35:3331-3339. [PMID: 33132021 DOI: 10.1053/j.jvca.2020.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 10/02/2020] [Accepted: 10/04/2020] [Indexed: 11/11/2022]
Abstract
Gastrointestinal (GI) bleeding in patients with calcific aortic valve stenosis (AVS), termed Heyde syndrome, was first described by Edward C. Heyde. The strong association between valvular replacement and the eradication of clinically significant GI bleeding confirmed an underlying pathophysiologic relationship. The rheologic stress created by AVS increases proteolysis of von Willebrand factor (VWF), resulting in loss of predominantly high-molecular-weight VWF (Hmw VWF). Angiodysplastic vessels present in patients with AVS, coupled with the lack of functioning Hmw VWF, increase the risk for GI bleeds. Aortic valve replacement, both surgical and transcatheter-based, is often a definitive treatment for GI bleeding, leading to recovery of Hmw VWF multimers. Perioperative management of patients involves monitoring their coagulation profiles with relevant laboratory tests and instituting appropriate management. Management can be directed in the following two ways: by improving internal release of VWF or by administration of external therapeutics containing VWF. It is important for perioperative physicians to obtain an understanding of the pathophysiology of this disease process and closely monitor the bleeding pattern so that targeted therapies can be initiated.
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Affiliation(s)
- Samhati Mondal
- Department of Anesthesiology, Cardiac Anesthesia Division, University of Maryland School of Medicine, Baltimore, MD.
| | - Kimberly N Hollander
- Department of Anesthesiology, Cardiac Anesthesia Division, University of Maryland School of Medicine, Baltimore, MD
| | - Stephanie O Ibekwe
- Department of Anesthesiology, Cardiovascular Division, BTGH, Baylor College of Medicine, Houston, TX
| | - Brittney Williams
- Department of Anesthesiology, Cardiac Anesthesia Division, University of Maryland School of Medicine, Baltimore, MD
| | - Kenichi Tanaka
- Department of Anesthesiology, Cardiac Anesthesia Division, University of Maryland School of Medicine, Baltimore, MD
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Mazzeffi M. Patient Blood Management in Adult Extracorporeal Membrane Oxygenation Patients. CURRENT ANESTHESIOLOGY REPORTS 2020. [DOI: 10.1007/s40140-020-00384-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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