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Premkumar M, Kulkarni AV, Kajal K, Divyaveer S. Principles, Interpretation, and Evidence-Based Role of Viscoelastic Point-of-Care Coagulation Assays in Cirrhosis and Liver Failure. J Clin Exp Hepatol 2022; 12:533-543. [PMID: 35535095 PMCID: PMC9077199 DOI: 10.1016/j.jceh.2021.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/02/2021] [Indexed: 12/12/2022] Open
Abstract
Background and Aims Standard coagulation tests such as prothrombin time, activated partial thromboplastin time, and international normalized ratio are determined by liver-synthesized coagulation factors. Despite an increased international normalized ratio, patients with cirrhosis are in a "rebalanced" state of hemostasis as the concomitant effect of reduced protein C, protein S, and thrombomodulin is not evaluated in standard coagulation tests. The cell-based model of hemostasis indicates additional mechanisms such as systemic inflammation, sepsis, and organ failures tip the delicate coagulation balance to an anticoagulant type in acute-on-chronic liver failure. In acute liver failure, thrombin generation and platelet function remain intact despite a marked prolongation in prothrombin time. We aimed to explain the principles, application, and utility of viscoelastic tests such as thromboelastography, rotational thromboelastometry, and Sonoclot. Methods We reviewed the available literature from MEDLINE, EMBASE and the Cochrane Central Register of Controlled Trial with the search terms 'coagulation', 'cirrhosis', 'acute-on-chronic liver failure', 'thromboelastography', 'thromboelastometry' and 'sonoclot' for cross sectional studies, cohort studies and randomized trials. Results The point-of-care viscoelastic tests provide actionable targets for correcting the coagulation defect in a patient with bleeding and provide evidence-based algorithms for use in liver disease. A limitation of these tests is the inability to assess vessel injury and endothelial elements. Conclusion Global coagulation tests provide a comprehensive estimate of coagulation in vitro; however, their use has only been validated in the setting of liver transplantation. Newer guidelines for hemostatic resuscitation are now accepting these POC tests, but additional data are required to validate their use as standard of care.
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Key Words
- ACLF, acute-on-chronic liver failure
- ACT, activated clotting time
- ALF, acute liver failure
- CR, clot rate
- INR, international normalized ratio
- MA, maximum amplitude
- R, reaction time
- ROTEM
- ROTEM, rotational thromboelastometry
- SCT, standard coagulation tests
- TEG, thromboelastography
- VWF, von Willebrand factor
- aPTT, activated partial thromboplastin time
- cirrhosis
- coagulation
- sonoclot
- thromboelastography
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Affiliation(s)
- Madhumita Premkumar
- Department of Hepatology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Anand V. Kulkarni
- Department of Hepatology, Asian Institute of Gastroenterology, Hyderabad, India
| | - Kamal Kajal
- Department of Anesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Smita Divyaveer
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
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Kang MG, Koo BK, Tantry US, Kim K, Ahn JH, Park HW, Park JR, Hwang SJ, Hwang JY, Gurbel PA, Samady H, Koh JS, Jeong YH. Association Between Thrombogenicity Indices and Coronary Microvascular Dysfunction in Patients With Acute Myocardial Infarction. JACC Basic Transl Sci 2021; 6:749-61. [PMID: 34754989 DOI: 10.1016/j.jacbts.2021.08.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 08/24/2021] [Accepted: 08/28/2021] [Indexed: 12/22/2022]
Abstract
Our study supports the feasibility of measuring thrombogenicity in patients with acute myocardial infarction, with intent to predict periprocedural and long-term clinical events, in real-world clinical practice. Preprocedural assessment of ex vivo thrombogenicity (eg, platelet-fibrin clot strength by thromboelastography) was significantly associated with the risk of coronary microvascular dysfunction. A combined risk stratification with coronary microvascular dysfunction and platelet-fibrin clot strength increased the prognostic implication to predict the rates of long-term clinical outcomes.
The association between thrombogenicity and coronary microvascular dysfunction (CMD) has been poorly explored in patients with acute myocardial infarction (AMI). In our real-world clinical practice (N = 116), thrombogenicity was evaluated with thromboelastography and conventional hemostatic measures, and CMD was defined as index of microcirculatory resistance of >40 U using the invasive physiologic test. High platelet-fibrin clot strength (P-FCS) (≥68 mm) significantly increased the risk of postprocedural CMD (odds ratio: 4.35; 95% CI: 1.74-10.89). Patients with both CMD and high P-FCS had a higher rate of ischemic events compared to non-CMD subjects with low P-FCS (odds ratio: 5.58; 95% CI: 1.31-23.68). This study showed a close association between heightened thrombogenicity and CMD and their prognostic implications after reperfusion in acute myocardial infarction patients.
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Key Words
- AMI, acute myocardial infarction
- CFR, coronary flow reserve
- CMD, coronary microvascular dysfunction
- IMR, index of microcirculatory resistance
- LASSO, least absolute shrinkage and selection operator
- MA, maximum amplitude
- MACE, major adverse cardiovascular events
- OR, odds ratio
- P-FCS, platelet-fibrin clot strength
- PCI, percutaneous coronary intervention
- PRU, P2Y12 reaction units
- R, reaction time
- TEG, thromboelastography
- TIMI, Thrombolysis in Myocardial Infarction
- Tmn, mean transit time
- acute myocardial infarction
- cardiovascular event
- clot strength
- coronary microvascular dysfunction
- thrombogenicity
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Jacob R, Palaskas NL, Lopez-Mattei J, Hassan S, Kim P, Donisan T, Balanescu DV, Cilingiroglu M, Marmagkiolis K, Iliescu C. How to Perform Pericardiocentesis in Cancer Patients With Thrombocytopenia: A Single-Center Experience. JACC CardioOncol 2021; 3:452-456. [PMID: 34604808 PMCID: PMC8463729 DOI: 10.1016/j.jaccao.2021.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/12/2021] [Indexed: 12/31/2022] Open
Affiliation(s)
- Robin Jacob
- Department of Cardiology, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Nicolas L. Palaskas
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Juan Lopez-Mattei
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Saamir Hassan
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Peter Kim
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Teodora Donisan
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Dinu Valentin Balanescu
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Mehmet Cilingiroglu
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | | | - Cezar Iliescu
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
- Address for correspondence: Dr Cezar Iliescu, Department of Cardiology, The University of Texas MD Anderson Cancer Center, 1400 Pressler Street, Unit 1451, Houston, Texas 77030, USA. @onco_cardiology@cezar_iliescu
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Nevens F, Gustot T, Laterre PF, Lasser LL, Haralampiev LE, Vargas V, Lyubomirova D, Albillos A, Najimi M, Michel S, Stoykov I, Gordillo N, Vainilovich Y, Barthel V, Clerget-Chossat N, Sokal EM. A phase II study of human allogeneic liver-derived progenitor cell therapy for acute-on-chronic liver failure and acute decompensation. JHEP Rep 2021; 3:100291. [PMID: 34169246 PMCID: PMC8207211 DOI: 10.1016/j.jhepr.2021.100291] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 03/16/2021] [Accepted: 04/07/2021] [Indexed: 02/06/2023] Open
Abstract
Background & Aims Human allogeneic liver-derived progenitor cells (HALPC, HepaStem®; Promethera Biosciences, Mont-Saint-Guibert, Belgium) are an advanced therapy medicinal product that could potentially alleviate systemic inflammation and ameliorate liver function in patients with acute-on-chronic liver failure (ACLF) or acute decompensation of cirrhosis (AD). Methods This open-label phase II study was conducted in 9 centres in Belgium, Spain, and Bulgaria between 2016 and 2019. The primary objective was to assess the safety of HALPC therapy up to Day 28 and the secondary objectives were to assess its safety and preliminary efficacy up to Month 3. Results The 24 treated patients (mean age: 51 years) were mostly male with an alcoholic cirrhosis. On pre-infusion Day 1, 15 patients had ACLF and 9 patients had AD. Two of the 3 initial patients treated with high HALPC doses (∼5×106 cells/kg body weight [BW]) had severe adverse bleeding events attributed to treatment. In 21 patients subsequently treated with lower HALPC doses (0.6 or 1.2×106 cells/kg BW, 1 or 2 times 7 days apart), no serious adverse events were related to treatment, and the other adverse events were in line with those expected in patients with ACLF and AD. Overall, markers of systemic inflammation and altered liver function decreased gradually for the surviving patients. The Day-28 and Month-3 survival rates were 83% (20/24) and 71% (17/24), and at Month 3, no patient had ACLF. Conclusions The treatment of patients with ACLF or AD with up to 2 doses of 1.2×106 HALPC/kg BW appeared safe. The results of this study support the initiation of a proof-of-concept study in a larger cohort of patients with ACLF to further confirm the safety and evaluate the efficacy of HALPC therapy. Clinical Trials Registration EudraCT 2016-001177-32. Lay summary Patients with liver cirrhosis may suffer from the rapid onset of organ failure or multiple organ failure associated with a high risk of death in the short term. This clinical study of 24 patients suggests that an advanced therapy based on the intravenous infusion of low doses of human allogeneic liver-derived progenitor cells is safe and supports the next phase of clinical development of this type of therapy.
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Key Words
- ACLF, acute-on-chronic liver failure
- AD, acute decompensation of liver cirrhosis
- AE, adverse event
- AESI, AE of special interest
- ATMP, advanced therapy medicinal product
- Alcoholic liver disease
- BW, body weight
- CRP, C-reactive protein
- EASL-CLIF, European Association for the Study of Chronic Liver Failure
- HALPC, human allogeneic liver-derived progenitor cells
- INR, international normalised ratio
- Liver regenerative medicine
- MELD, model for end-stage liver disease
- MSC, mesenchymal stem cells
- SAE, serious AE
- SAS, safety analysis set
- SUSAR, suspected unexpected serious adverse reaction
- Stem cell
- TEG, thromboelastography
- TGT, thrombin generation test
- i.v., intravenous
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Affiliation(s)
- Frederik Nevens
- Department of Gastroenterology and Hepatology, University Hospitals, KU Leuven, Belgium
| | - Thierry Gustot
- Department of Gastroenterology and Hepato-Pancreatology, C.U.B. Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | | | - Luc L Lasser
- Gastroenterology Clinic, CHU Brugmann, Brussels, Belgium.,Department of Hepatogastroenterology, CHU Brugmann, Brussels, Belgium
| | - Lyudmil E Haralampiev
- Department of Internal Diseases, Multiprofile Hospital for Active Treatment (MEDICA), Ruse, Bulgaria
| | - Victor Vargas
- Liver Unit, Hospital Vall d'Hebron, Universitat Autònoma Barcelona, CIBERehd, Barcelona, Spain
| | - Desislava Lyubomirova
- Department of Clinical Gastroenterology with Hepatology, Gastroenterology Clinic, University Multiprofile Hospital for Active Treatment "Georgi Stranski", Pleven, Bulgaria
| | - Agustin Albillos
- Gastroenterology and Hepatology, University Hospital Ramón y Cajal, Madrid, Spain
| | - Mustapha Najimi
- UCLouvain, Institute of Experimental and Clinical Research (IREC), Laboratory of Pediatric Hepatology and Cell Therapy (PEDI), Brussels, Belgium
| | | | | | | | | | | | | | - Etienne M Sokal
- UCLouvain, Institute of Experimental and Clinical Research (IREC), Laboratory of Pediatric Hepatology and Cell Therapy (PEDI), Brussels, Belgium.,Promethera Biosciences, Mont-Saint-Guibert, Belgium.,Cliniques Universitaires Saint-Luc, UCLouvain, Pediatric Hepatology & Gastroenterology Unit, Brussels, Belgium
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Lee A, Boysen SR, Sanderson J, Wagg CR, Chalhoub S. Effects of Yunnan Baiyao on blood coagulation parameters in beagles measured using kaolin activated thromboelastography and more traditional methods. Int J Vet Sci Med 2017; 5:53-56. [PMID: 30255049 PMCID: PMC6137688 DOI: 10.1016/j.ijvsm.2017.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 11/27/2016] [Accepted: 01/23/2017] [Indexed: 11/25/2022] Open
Abstract
Yunnan Baiyao is anecdotally widely used in veterinary medicine for its pro-coagulation properties. There are no studies determining its effect on clotting tests. The purpose of this study was to determine the effect of oral Yunnan Baiyao (YB) on hemostasis by measuring coagulation via kaolin activated citrated whole blood thromboelastography (TEG), prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen, and d-dimers. The study was a prospective, randomized controlled crossover trial. Eight healthy University of Calgary owned beagles were treated orally with either Yunnan Baiyao or placebo every 12 h for 5 treatments. Blood was collected immediately before treatment, 2 h after the last treatment, and 24 h after the last treatment. TEG analysis was run 30 ± 5 min after blood collection. All other coagulation analyses were sent to a reference laboratory for further analysis. No treatment adverse effects were observed. Oral YB increased R-time significantly within the YB group, but the increase was still within canine reference ranges. No other changes were observed. Oral YB at the dosage and frequency administered in this study did not produce any significant improvement in hemostatic parameters. There is a need for further research and scientific evidence for YB use and dosage.
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Affiliation(s)
- Albert Lee
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary AB T3G 4Z7, Canada
| | - Søren R Boysen
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary AB T3G 4Z7, Canada
| | - Jillian Sanderson
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary AB T3G 4Z7, Canada
| | - Cathy R Wagg
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary AB T3G 4Z7, Canada
| | - Serge Chalhoub
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary AB T3G 4Z7, Canada
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Abstract
Portal vein thrombosis (PVT) is being increasingly recognized in patients with advanced cirrhosis and in those undergoing liver transplantation. Reduced flow in the portal vein is probably responsible for clotting in the spleno-porto-mesenteric venous system. There is also increasing evidence that hypercoagulability occurs in advanced liver disease and contributes to the risk of PVT. Ultrasound based studies have reported a prevalence of PVT in 10-25% of cirrhotic patients without hepatocellular carcinoma. Partial thrombosis of the portal vein is more common and may not have pathophysiological consequences. However, there is high risk of progression of partial PVT to complete PVT that may cause exacerbation of portal hypertension and progression of liver insufficiency. It is thus, essential to accurately diagnose and stage PVT in patients waiting for transplantation and consider anticoagulation therapy. Therapy with low molecular weight heparin and vitamin K antagonists has been shown to achieve complete and partial recanalization in 33-45% and 15-35% of cases respectively. There are however, no guidelines to help determine the dose and therapeutic efficacy of anticoagulation in patients with cirrhosis. Anticoagulation therapy related bleeding is the most feared complication but it appears that the risk of variceal bleeding is more likely to be dependent on portal pressure rather than solely related to coagulation status. TIPS has also been reported to restore patency of the portal vein. Patients with complete PVT currently do not form an absolute contraindication for liver transplantation. Thrombectomy or thromboendovenectomy is possible in more than 75% of patients followed by anatomical end-to-end portal anastomosis. When patency of the portal vein and/or superior mesenteric vein is not achieved, only non-anatomical techniques (reno-portal anastomosis or cavo-portal hemitransposition) can be performed. These techniques, which do not fully reverse portal hypertension, are associated with higher morbidity and mortality risks in the short term.
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Key Words
- DVT, deep vein thrombosis
- EVL, endoscopic variceal ligation
- INR, international normalized ratio
- IVC, inferior vena cava
- LMWH, low molecular weight heparin
- MELD, model for end stage liver disease
- MTHFR, methylene-tetrahydrofolate reductase
- PE, pulmonary embolism
- PT, prothrombin time
- PVT, portal vein thrombosis
- SMV, superior mesenteric vein
- TEG, thromboelastography
- TIPS, transjugular intrahepatic portosystemic shunt
- US, ultrasonography
- VKA, vitamin K antagonists
- anticoagulation
- cirrhosis
- portal vein thrombosis
- portocaval hemitransposition
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Affiliation(s)
- Kaiser Raja
- Address for correspondence: Kaiser Raja, Department of Hepatology, Global Integrated Liver Care Program, BGS Global Hospitals, #67 Utarahalli Road, Kengeri, Bangalore 560 060, India.
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