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1.
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1441477

RESUMO

Introducción: Los trastornos de la coagulación durante el perioperatorio de pacientes oncológicos, son eventos más frecuentes de lo que se conoce en realidad, debido a que un gran número de estos transitan de forma inadvertida. Objetivo: Describir los factores fisiopatológicos que propician la ocurrencia de las coagulopatías adquiridas por consumo durante el perioperatorio del paciente oncológico. Métodos: Se realizó una revisión narrativa, en idiomas español e inglés, se utilizaron como fuente de búsqueda las bases de datos Ebsco, SciElo, Pubmed, Cubmed, Hinary, durante el período de enero a marzo de 2022, y el referenciador Zotero versión 5.0. Resultados: Para comprender qué pasa en el paciente con cáncer en relación con las coagulopatías por consumo es necesario entender la fisiología de los mecanismos de la coagulación. En este sentido, se pueden observar tanto trastornos trombóticos como hemorrágicos, por el incremento del factor tisular que determina la formación de trombina y el fallo de los mecanismos antifibrinolíticos. También, factores como la radioterapia, la quimioterapia y la transfusión de hemocomponentes, aumentan el riesgo de padecerlas. Conclusiones: la coagulopatía por consumo en el paciente oncológico es una entidad multifactorial, compleja y dinámica, en la que se debe pensar y diagnosticar para evitar complicaciones graves en el período perioperatorio.


Introduction: Coagulation disorders during the perioperative period of cancer patients are more frequent events than is actually known, due to the fact that a large number of these go unnoticed. Objective: To describe the pathophysiological factors that favor the occurrence of consumption-acquired coagulopathies during the perioperative period of cancer patients. Methods: A narrative review was carried out, in Spanish and English, using the Ebsco, Scielo, Pubmed, Cubmed, Hinary databases as a search source, during the period from January to March 2022, and the Zotero version 5.0 referer. 96.3. Results: To understand what happens in cancer patients in relation to consumption coagulopathies, it is necessary to understand the physiology of coagulation mechanisms. In this sense, both thrombotic and hemorrhagic disorders can be observed, due to the increase in the tissue factor that determines the formation of thrombin and the failure of antifibrinolytic mechanisms. Also, factors such as radiotherapy, chemotherapy and transfusion of blood components, increase the risk of suffering from them. Conclusions: consumption coagulopathy in cancer patients is a multifactorial, complex and dynamic entity, which must be considered and diagnosed to avoid serious complications in the perioperative period.


Assuntos
Humanos , Coagulação Intravascular Disseminada/fisiopatologia
2.
Biomolecules ; 12(12)2022 12 08.
Artigo em Inglês | MEDLINE | ID: mdl-36551267

RESUMO

BACKGROUND: Vascular anomalies comprise a diverse group of rare diseases with altered blood flow and are often associated with coagulation disorders. The most common example is a localized intravascular coagulopathy in venous malformations leading to elevated D-dimers. In severe cases, this may progress to a disseminated intravascular coagulopathy with subsequent consumption of fibrinogen and thrombocytes predisposing to serious bleeding. A separate coagulopathy is the Kasabach-Merritt phenomenon in kaposiform hemangioendothelioma characterized by platelet trapping leading to thrombocytopenia and eventually consumptive coagulopathy. Our previous work showed impaired von Willebrand factor and platelet aggregometry due to abnormal blood flow, i.e., in ventricular assist devices or extracorporeal membrane oxygenation. With altered blood flow also present in vascular anomalies, we hypothesized that, in particular, the von Willebrand factor parameters and the platelet function may be similarly impacted. METHODS: We prospectively recruited 73 patients with different vascular anomaly entities and analyzed their coagulation parameters. RESULTS: Acquired von Willebrand syndrome was observed in both of our patients with Kasabach-Merritt phenomenon. In six out of nine patients with complex lymphatic anomalies, both the vWF antigen and activity were upregulated. Platelet aggregometry was impaired in both patients with Kasabach-Merritt phenomenon and in seven out of eight patients with an arteriovenous malformation. CONCLUSIONS: The analysis of coagulation parameters in our patients with vascular anomalies advanced our understanding of the underlying pathophysiologies of the observed coagulopathies. This may lead to new treatment options for the, in part, life-threatening bleeding risks in these patients in the future.


Assuntos
Transtornos da Coagulação Sanguínea , Coagulação Sanguínea , Malformações Vasculares , Humanos , Plaquetas , Coagulação Intravascular Disseminada/etiologia , Coagulação Intravascular Disseminada/fisiopatologia , Hemangioendotelioma/etiologia , Hemangioendotelioma/fisiopatologia , Síndrome de Kasabach-Merritt/etiologia , Síndrome de Kasabach-Merritt/fisiopatologia , Fator de von Willebrand/metabolismo , Malformações Vasculares/complicações , Malformações Vasculares/fisiopatologia , Transtornos da Coagulação Sanguínea/etiologia , Transtornos da Coagulação Sanguínea/fisiopatologia
3.
Shock ; 57(2): 168-174, 2022 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-35025842

RESUMO

BACKGROUND: Disseminated intravascular coagulation (DIC) is a life-threatening complication of septic shock; however, risk factors for its development after admission are unknown. Thromboelastography (TEG) can reflect coagulation disturbances in early non-overt DIC that are not detected by standard coagulation tests. This study investigated the risk factors including TEG findings as early predictors for DIC development after admission in septic shock patients with non-overt DIC. METHODS: This retrospective observation study included 295 consecutive septic shock patients with non-overt DIC at admission between January 2016 and December 2019. DIC was defined as an International Society on Thrombosis and Hemostasis (ISTH) score ≥ 5. The primary outcome was non-overt DIC at admission that met the ISTH DIC criteria within 3 days after admission. RESULTS: Of the 295 patients with non-overt DIC, 89 (30.2%) developed DIC after admission. The DIC group showed a higher ISTH score and 28-day mortality rate than the non-DIC group (2 vs. 3, P < 0.001; 13.6% vs. 27.0%, P = 0.008, respectively). The DIC rate increased with the ISTH score (7.7%, 13.3%, 15.8%, 36.5%, and 61.4% for scores of 0, 1, 2, 3, and 4, respectively). Among TEG values, the maximum amplitude (MA) was higher in the non-DIC group (P < 0.001). On multivariate analysis, an MA < 64 mm was independently associated with DIC development (odds ratio, 2.311; 95% confidence interval, 1.298-4.115). CONCLUSIONS: DIC more often developed among those with admission ISTH scores ≥ 3 and was associated with higher mortality rates. An MA < 64 mm was independently associated with DIC development in septic shock patients.


Assuntos
Coagulação Intravascular Disseminada/diagnóstico por imagem , Choque Séptico/complicações , Tromboelastografia/normas , Idoso , Testes de Coagulação Sanguínea/métodos , Testes de Coagulação Sanguínea/estatística & dados numéricos , Estudos de Coortes , Coagulação Intravascular Disseminada/diagnóstico , Coagulação Intravascular Disseminada/fisiopatologia , Feminino , Hospitalização/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Sistemas Automatizados de Assistência Junto ao Leito/normas , Sistemas Automatizados de Assistência Junto ao Leito/estatística & dados numéricos , Estudos Prospectivos , Curva ROC , República da Coreia , Estudos Retrospectivos , Choque Séptico/sangue , Tromboelastografia/métodos , Tromboelastografia/estatística & dados numéricos
4.
Eur Rev Med Pharmacol Sci ; 25(17): 5518-5524, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34533802

RESUMO

OBJECTIVE: In liver cirrhosis, a complex coagulopathy does exist. The aim was to investigate whether a possible chronic consumption coagulopathy is the underlying phenomenon of the disease. PATIENTS AND METHODS: We measured endogenous thrombin generation with and without thrombomodulin (ETP ratio) along with D-Dimer in a group of consecutive 282 cirrhotic patients. Fibrinogen, Platelet count and the Hemorrhagic score were previously computed in the same patients. The ETP ratio represents the resistance to the anticoagulant activity of TM and should be considered as an index of a procoagulant imbalance. RESULTS: ETP ratio and D-Dimer showed higher values in the cirrhotic patients when compared to controls thus showing a hypercoagulable state. When the patients were divided based on the Hemorrhagic score >7, we found that Fibrinogen, ETP ratio, D-Dimer and the platelet count were significantly different between the two groups. Again, when we considered ETP ratio >0.88, the median value of the cirrhotic patients, all parameters, were statistically different between the two groups. D-Dimer were higher while fibrinogen and platelet count were statistically lower in cirrhotic patients with higher ETP ratio values. Even when the same patients were divided based on their platelet count ( 100 x 109/L) the results showed a similar behavior. ROC curves showed significant AUCs when the hemorrhagic score was challenged against Fibrinogen, D-Dimer, Platelet count and ETP ratio. CONCLUSIONS: In liver cirrhosis hypercoagulable state is associated with an increase in D-Dimer levels along with a decrease in fibrinogen and platelet count thus indicating a low-grade intravascular coagulation which predicts a high hemorrhagic risk.


Assuntos
Transtornos da Coagulação Sanguínea/fisiopatologia , Coagulação Intravascular Disseminada/fisiopatologia , Hemorragia/epidemiologia , Cirrose Hepática/complicações , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Produtos de Degradação da Fibrina e do Fibrinogênio/metabolismo , Hemorragia/etiologia , Humanos , Cirrose Hepática/sangue , Masculino , Pessoa de Meia-Idade , Contagem de Plaquetas , Estudos Retrospectivos , Risco , Trombina/metabolismo , Trombomodulina/metabolismo
5.
J Stroke Cerebrovasc Dis ; 30(9): 105938, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34171649

RESUMO

Coronavirus is a novel human pathogen causing fulminant respiratory syndrome (COVID-19). Although COVID-19 is primarily a disease of the lungs with florid respiratory manifestations, there are increasing reports of cardiovascular, musculoskeletal, gastrointestinal, and thromboembolic complications. Developing an effective and reliable vaccine was emergently pursued to control the catastrophic spread of the global pandemic. We report a fatal case of vaccine-induced immune thrombotic thrombocytopenia (VITT) after receiving the first dose of the ChAdOx1 nCoV-19 vaccine. We attribute this fatal thrombotic condition to the vaccine due to the remarkable temporal relationship. The proposed mechanism of VITT is production of rogue antibodies against platelet factor-4 resulting in massive platelet aggregation. Healthcare providers should be aware of the possibility of such fatal complication, and the vaccine recipients should be warned about the symptoms of VITT.


Assuntos
Vacinas contra COVID-19/efeitos adversos , Coagulação Intravascular Disseminada/induzido quimicamente , Púrpura Trombocitopênica Trombótica/induzido quimicamente , Trombose do Seio Sagital/etiologia , Vacinação/efeitos adversos , Adulto , Vacinas contra COVID-19/administração & dosagem , ChAdOx1 nCoV-19 , Coagulação Intravascular Disseminada/sangue , Coagulação Intravascular Disseminada/diagnóstico , Coagulação Intravascular Disseminada/fisiopatologia , Evolução Fatal , Feminino , Humanos , Púrpura Trombocitopênica Trombótica/sangue , Púrpura Trombocitopênica Trombótica/diagnóstico , Púrpura Trombocitopênica Trombótica/fisiopatologia , Trombose do Seio Sagital/diagnóstico por imagem , Trombose do Seio Sagital/fisiopatologia , Resultado do Tratamento
6.
Eur Rev Med Pharmacol Sci ; 25(8): 3350-3364, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33928623

RESUMO

OBJECTIVE: The purpose of this article was to review our clinical experience with COVID-19 patients observed in the Cardiovascular Division of Pompidou Hospital (University of Paris, France) and the Department of Neurology of the Eastern Piedmont University (Novara, Italy), related to the impact on the cardiovascular, hematological, and neurologic systems and sense organs. PATIENTS AND METHODS: We sought to characterize cardiovascular, hematological, and neurosensory manifestations in patients with COVID-19 and variants. Special attention was given to initial signs and symptoms to facilitate early diagnosis and therapy. Indications of ECMO (extracorporeal membrane oxygenation) for cardiorespiratory support were evaluated. RESULTS: Preliminary neurosensorial symptoms, such as anosmia and dysgeusia, are useful for diagnosis, patient isolation, and treatment. Early angiohematological acro-ischemic syndrome includes hand and foot cyanosis, Raynaud digital ischemia phenomenon, skin bullae, and dry gangrene. This was associated with neoangiogenesis, vasculitis, and vessel thrombosis related to immune dysregulation, resulting from "cytokine storm syndrome". The most dangerous complication is disseminated intravascular coagulation, with mortality risks for both children and adults. CONCLUSIONS: COVID-19 is a prothrombotic disease with unique global lethality. A strong inflammatory response to viral infection severely affects cardiovascular and neurological systems, as well as respiratory, immune, and hematological systems. Rapid identification of acro-ischemic syndrome permits the treatment of disseminated intravascular coagulation complications. Early sensorial symptoms, such as gustatory and olfactory loss, are useful for COVID-19 diagnosis. New variants of SARS-CoV-2 are emerging, principally from United Kingdom, South Africa, and Brazil. These variants seem to spread more easily and quickly, which may lead to more cases of COVID.


Assuntos
Anosmia/fisiopatologia , COVID-19/fisiopatologia , Cianose/fisiopatologia , Coagulação Intravascular Disseminada/fisiopatologia , Disgeusia/fisiopatologia , Miocardite/fisiopatologia , Doença de Raynaud/fisiopatologia , Vasculite/fisiopatologia , COVID-19/patologia , COVID-19/terapia , COVID-19/virologia , Proteases 3C de Coronavírus/ultraestrutura , Síndrome da Liberação de Citocina , Coagulação Intravascular Disseminada/patologia , Oxigenação por Membrana Extracorpórea , Pé/irrigação sanguínea , França , Gangrena/patologia , Gangrena/fisiopatologia , Mãos/irrigação sanguínea , Humanos , Isquemia/patologia , Isquemia/fisiopatologia , Ventilação não Invasiva , Troca Plasmática , Doença de Raynaud/patologia , SARS-CoV-2 , Glicoproteína da Espícula de Coronavírus/ultraestrutura , Síncrotrons , Vasculite/patologia
7.
Minerva Med ; 112(6): 701-712, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33709675

RESUMO

INTRODUCTION: Disseminated intravascular coagulation (DIC) has long been understood as a condition where both thrombotic and hemostatic abnormalities coexist. DIC is a difficult complication for clinicians to manage as it is due to multiple underlying complications of pathophysiologic abnormalities in diverse disease states. Ongoing research continues to define the meaning of DIC, evaluate therapeutic options, and how it presents with the complex paradigm of systemic activation of coagulation. In this review we introduce the current topics regarding this difficult situation. EVIDENCE ACQUISITION: Online search of published medical literature through MEDLINE and Web of Science using the term "disseminated intravascular coagulation," "coagulopathy," "coagulation disorder," "hemostasis," "fibrinolysis," "thrombus" and "anticoagulants." EVIDENCE SYNTHESIS: Articles were chosen for inclusion based on their relevance to disseminated intravascular coagulation, coagulopathy, hemostasis and thrombosis in sepsis, COVID-19, trauma, and obstetrics. Reference lists were reviewed to identify additional relevant articles. CONCLUSIONS: DIC is recognized as a pathologically triggered and dysregulated systemic activation of coagulation in response to various noxious stimuli. DIC's phenotype and clinical manifestations can vary from prothrombotic to hemorrhagic, depending on the underlying diseases. However, the fundamental mechanisms of systemic and vascular endothelial dysfunction can be explained as different phases of the acute response, with an initial prothrombotic phase that can commonly change to hemostatic insufficiency. Thrombin is the key initiator of the pathophysiologic process along with endothelial injury and initially fibrinolysis activation followed by fibrinolysis suppression. There is no established approach for managing DIC beyond initially treating the underlying disease and replacement therapy for the management of coagulopathy. Targeting anticoagulation therapy with antithrombin concentrates and recombinant thrombomodulin for the prevention of microthrombus formation, and antifibrinolytic therapy using tranexamic acid for the coagulopathy after massive bleeding, continue to be studied as therapeutic options.


Assuntos
Transtornos da Coagulação Sanguínea/tratamento farmacológico , Coagulação Intravascular Disseminada/tratamento farmacológico , Transtornos da Coagulação Sanguínea/diagnóstico , Transtornos da Coagulação Sanguínea/fisiopatologia , Coagulação Intravascular Disseminada/diagnóstico , Coagulação Intravascular Disseminada/fisiopatologia , Humanos
8.
Crit Care ; 25(1): 95, 2021 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-33685461

RESUMO

Endothelial cells play a key role in maintaining intravascular patency through their anticoagulant properties. They provide a favorable environment for plasma anticoagulant proteins, including antithrombin, tissue factor pathway inhibitor, and protein C. Under septic conditions, however, the anticoagulant properties of endothelial cells are compromised. Rather, activated/injured endothelial cells can provide a scaffold for intravascular coagulation. For example, the expression of tissue factor, an important initiator of the coagulation pathway, is induced on the surface of activated endothelial cells. Phosphatidylserine, a high-affinity scaffold for gamma-carboxyglutamate domain containing coagulation factors, including FII, FVII, FIX, and FX, is externalized to the outer leaflet of the plasma membrane of injured endothelial cells. Hemodilution decreases not only coagulation factors but also plasma anticoagulant proteins, resulting in unleashed activation of coagulation on the surface of activated/injured endothelial cells. The aberrant activation of coagulation can be suppressed in part by the supplementation of recombinant antithrombin and recombinant thrombomodulin. This review aims to overview the physiological and pathological functions of endothelial cells along with proof-of-concept in vitro studies. The pathophysiology of COVID-19-associated thrombosis is also discussed.


Assuntos
COVID-19/complicações , Coagulação Intravascular Disseminada/fisiopatologia , Células Endoteliais/patologia , Sepse/fisiopatologia , COVID-19/fisiopatologia , Ensaios Clínicos Fase III como Assunto , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto , Trombose/fisiopatologia , Trombose/virologia
9.
Br J Haematol ; 192(5): 803-818, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33555051

RESUMO

Disseminated intravascular coagulation (DIC) is a systemic activation of the coagulation system, which results in microvascular thrombosis and, simultaneously, potentially life-threatening haemorrhage attributed to consumption of platelets and coagulation factors. Underlying conditions, e.g. infection, cancer, or obstetrical complications are responsible for the initiation and propagation of the DIC process. This review provides insights into the epidemiology of DIC and the current understanding of its pathophysiology. It details the use of diagnostic biomarkers, current diagnostic recommendations from international medical societies, and it provides an overview of emerging diagnostic and prognostic biomarkers. Last, it provides guidance on management. It is concluded that timely and accurate diagnosis of DIC and its underlying condition is essential for the prognosis. Treatment should primarily focus on the underlying cause of DIC and supportive treatment should be individualised according to the underlying aetiology, patient's symptoms and laboratory records.


Assuntos
Coagulação Intravascular Disseminada , Anticoagulantes/uso terapêutico , Biomarcadores/sangue , Viscosidade Sanguínea , Gerenciamento Clínico , Coagulação Intravascular Disseminada/diagnóstico , Coagulação Intravascular Disseminada/epidemiologia , Coagulação Intravascular Disseminada/fisiopatologia , Coagulação Intravascular Disseminada/terapia , Endotélio Vascular/fisiopatologia , Feminino , Fibrinólise , Humanos , Masculino , Neoplasias/sangue , Ativação Plaquetária , Gravidez , Complicações Hematológicas na Gravidez/sangue , Prevalência , Prognóstico , Sepse/sangue , Índice de Gravidade de Doença , Trombina/análise , Tromboembolia/sangue , Tromboembolia/etiologia , Tromboplastina/análise
10.
Expert Rev Hematol ; 14(2): 155-173, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33480807

RESUMO

INTRODUCTION: COVID-19 has similarities to the Severe Acute Respiratory Syndrome (SARS) and Middle East Respiratory Syndrome (MERS) outbreaks, as severe patients and non-survivors have frequently shown abnormal coagulation profiles. Immune-mediated pathology is a key player in this disease; hence, the role of the complement system needs assessment. The complement system and the coagulation cascade share an intricate network, where multiple mediators maintain a balance between both pathways. Coagulopathy in COVID-19, showing mixed features of complement-mediated and consumption coagulopathy, creates a dilemma in diagnosis and management. AREAS COVERED: Pathophysiology of coagulopathy in COVID-19 patients, with a particular focus on D-dimer and its role in predicting the severity of COVID-19 has been discussed. A comprehensive search of the medical literature on PubMed was done till May 30th, 2020 with the keywords 'COVID-19', 'SARS-CoV-2', 'Coronavirus', 'Coagulopathy', and 'D-dimer'. Twenty-two studies were taken for weighted pooled analysis of D-dimer. EXPERT OPINION: A tailored anticoagulant regimen, including intensification of standard prophylactic regimens with low-molecular-weight heparin is advisable for COVID-19 patients. Atypical manifestations and varying D-dimer levels seen in different populations bring forth the futility of uniform recommendations for anticoagulant therapy. Further, direct thrombin inhibitors and platelet inhibitors in a patient-specific manner should also be considered.


Assuntos
Transtornos da Coagulação Sanguínea/etiologia , COVID-19/complicações , Ativação do Complemento , SARS-CoV-2 , Animais , Anticoagulantes/uso terapêutico , Biomarcadores , Transtornos da Coagulação Sanguínea/sangue , Transtornos da Coagulação Sanguínea/imunologia , Transtornos da Coagulação Sanguínea/fisiopatologia , Testes de Coagulação Sanguínea , COVID-19/sangue , COVID-19/imunologia , COVID-19/terapia , China/epidemiologia , Comorbidade , Infecções por Coronavirus/sangue , Coagulação Intravascular Disseminada/sangue , Coagulação Intravascular Disseminada/epidemiologia , Coagulação Intravascular Disseminada/etiologia , Coagulação Intravascular Disseminada/fisiopatologia , Ferritinas/sangue , Produtos de Degradação da Fibrina e do Fibrinogênio/análise , Previsões , Humanos , Imunização Passiva , Inflamação/etiologia , Inflamação/fisiopatologia , Quelantes de Ferro/uso terapêutico , Isquemia/sangue , Isquemia/etiologia , Isquemia/fisiopatologia , Camundongos , Prevalência , Síndrome Respiratória Aguda Grave/sangue , Índice de Gravidade de Doença , Trombofilia/tratamento farmacológico , Trombofilia/etiologia , Trombofilia/fisiopatologia , Tromboembolia Venosa/sangue , Tromboembolia Venosa/etiologia , Tromboembolia Venosa/fisiopatologia , Soroterapia para COVID-19
12.
Int J Hematol ; 113(1): 45-57, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33161508

RESUMO

The pathology of coronavirus disease 2019 (COVID-19) is exacerbated by the progression of thrombosis, and disseminated intravascular coagulation (DIC), and cytokine storms. The most frequently reported coagulation/fibrinolytic abnormality in COVID-19 is the increase in D-dimer, and its relationship with prognosis has been discussed. However, limits exist to the utility of evaluation by D-dimer alone. In addition, since the coagulation/fibrinolytic condition sometimes fluctuates within a short period of time, regular examinations in recognition of the significance of the examination are desirable. The pathophysiology of disseminated intravascular coagulation (DIC) associated with COVID-19 is very different from that of septic DIC, and both thrombotic and hemorrhagic pathologies should be noted. COVID-19 thrombosis includes macro- and microthrombosis, with diagnosis of the latter depending on markers of coagulation and fibrinolysis. Treatment of COVID-19 is classified into antiviral treatment, cytokine storm treatment, and thrombosis treatment. Rather than providing uniform treatment, the treatment method most suitable for the severity and stage should be selected. Combination therapy with heparin and nafamostat is expected to develop in the future. Fibrinolytic therapy and adsorption therapy require further study.


Assuntos
Transtornos da Coagulação Sanguínea/etiologia , COVID-19/sangue , Pandemias , SARS-CoV-2 , Adulto , Anticoagulantes/uso terapêutico , Benzamidinas , Transtornos da Coagulação Sanguínea/fisiopatologia , Testes de Coagulação Sanguínea , COVID-19/complicações , COVID-19/mortalidade , COVID-19/terapia , Síndrome da Liberação de Citocina/sangue , Síndrome da Liberação de Citocina/tratamento farmacológico , Síndrome da Liberação de Citocina/etiologia , Coagulação Intravascular Disseminada/etiologia , Coagulação Intravascular Disseminada/fisiopatologia , Feminino , Produtos de Degradação da Fibrina e do Fibrinogênio/análise , Fibrinólise , Guanidinas/farmacologia , Guanidinas/uso terapêutico , Humanos , Linfopenia/etiologia , Masculino , Pessoa de Meia-Idade , Prognóstico , Circulação Pulmonar , SARS-CoV-2/efeitos dos fármacos , Sobreviventes , Trombocitopenia/etiologia , Trombofilia/tratamento farmacológico , Trombofilia/etiologia , Trombofilia/fisiopatologia , Tratamento Farmacológico da COVID-19
13.
Am J Obstet Gynecol ; 224(2): 217.e1-217.e11, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-32795430

RESUMO

BACKGROUND: The diagnostic criteria for preeclampsia have evolved from the traditional definition of de novo hypertension and proteinuria to a broader definition of hypertension with evidence of end-organ dysfunction. Although this change is endorsed by various societies such as the International Society for the Study of Hypertension in Pregnancy and the American College of Obstetricians and Gynecologists, there remains controversy with regard to the implementation of broader definitions and the most appropriate definition of end-organ dysfunction. OBJECTIVE: This study aimed to assess the impact of different diagnostic criteria for preeclampsia on rates of disease diagnosis, disease severity, and adverse outcomes and to identify associations between each component of the different diagnostic criteria and adverse pregnancy outcomes. STUDY DESIGN: We performed a retrospective cohort study of singleton pregnancies at Monash Health between January 1, 2016 and July 31, 2018. Within this population, all cases of gestational hypertension and preeclampsia were reclassified according to the International Society for the Study of Hypertension in Pregnancy 2001, American College of Obstetricians and Gynecologists 2018, and International Society for the Study of Hypertension in Pregnancy 2018 criteria. Differences in incidence of preeclampsia and maternal and perinatal outcomes were compared between the International Society for the Study of Hypertension in Pregnancy 2001 group and the extra cases identified by American College of Obstetricians and Gynecologists 2018 and International Society for the Study of Hypertension in Pregnancy 2018. Outcomes assessed included biochemical markers of preeclampsia, a composite of adverse maternal outcomes, and a composite of adverse perinatal outcomes. Multiple logistic regression analysis was also performed to assess each component of the American College of Obstetricians and Gynecologists 2018 and International Society for the Study of Hypertension in Pregnancy 2018 criteria and their associations with adverse maternal and perinatal outcomes. RESULTS: Of 22,094 pregnancies, 751 (3.4%) women had preeclampsia as defined by any of the 3 criteria. Compared with International Society for the Study of Hypertension in Pregnancy 2001, the American College of Obstetricians and Gynecologists 2018 criteria identified an extra 42 women (n=654 vs n=696, 6.4% relative increase) with preeclampsia, and International Society for the Study of Hypertension in Pregnancy 2018 identified an extra 97 women (n=654 vs n=751, 14.8% relative increase). The additional women identified by International Society for the Study of Hypertension in Pregnancy 2018 exhibited a milder form of disease with lower rates of severe hypertension (62.4% vs 44.3%; P<.01) and magnesium sulfate use (11.9% vs 4.1%; P<.05) and a trend toward lower rates of adverse maternal outcomes (9.8% vs 4.1%). These women also delivered at a later gestation, and their babies had a lower number of neonatal intensive care unit admissions and adverse perinatal outcomes. Objective features such as fetal growth restriction, thrombocytopenia, renal and liver impairment, and proteinuria were associated with an increased risk of adverse maternal and perinatal outcomes, whereas subjective neurologic features demonstrated poorer associations. CONCLUSION: Implementation of broader definitions of preeclampsia will result in an increased incidence of disease diagnosis. However, because women who exclusively fulfill the new criteria have a milder phenotype of the disease, it remains uncertain whether this will translate to improved outcomes.


Assuntos
Injúria Renal Aguda/fisiopatologia , Hipertensão Induzida pela Gravidez/fisiopatologia , Hepatopatias/fisiopatologia , Doenças do Sistema Nervoso/fisiopatologia , Pré-Eclâmpsia/diagnóstico , Proteinúria/fisiopatologia , Trombocitopenia/fisiopatologia , Adulto , Anticonvulsivantes/uso terapêutico , Anti-Hipertensivos/uso terapêutico , Cesárea/estatística & dados numéricos , Estudos de Coortes , Coagulação Intravascular Disseminada/fisiopatologia , Eclampsia/fisiopatologia , Feminino , Retardo do Crescimento Fetal/fisiopatologia , Idade Gestacional , Cefaleia/fisiopatologia , Hemólise , Humanos , Hipertensão Induzida pela Gravidez/tratamento farmacológico , Unidades de Terapia Intensiva/estatística & dados numéricos , Unidades de Terapia Intensiva Neonatal/estatística & dados numéricos , Trabalho de Parto Induzido/estatística & dados numéricos , Modelos Logísticos , Sulfato de Magnésio/uso terapêutico , Morte Perinatal , Hemorragia Pós-Parto/epidemiologia , Pré-Eclâmpsia/classificação , Pré-Eclâmpsia/fisiopatologia , Pré-Eclâmpsia/terapia , Gravidez , Nascimento Prematuro/epidemiologia , Edema Pulmonar/fisiopatologia , Estudos Retrospectivos , Índice de Gravidade de Doença , Acidente Vascular Cerebral/fisiopatologia , Transtornos da Visão/fisiopatologia , Adulto Jovem
16.
Hamostaseologie ; 40(3): 264-269, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32498097

RESUMO

The novel coronavirus, SARS-CoV-2, is causing a global pandemic of life-threatening multiorgan disease, called COVID-19. Accumulating evidence indicates that patients with COVID-19 are at significant risk of thromboembolic complications, mainly affecting the venous, but also the arterial vascular system. While the risk of venous thromboembolism (VTE) appears to be higher in patients requiring intensive care unit support compared to those admitted to general wards, recent autopsy findings and data on the timing of VTE diagnosis relative to hospitalization clearly suggest that thromboembolic events also contribute to morbidity and mortality in the ambulatory setting. In addition to a severe hypercoagulable state caused by systemic inflammation and viral endotheliitis, some patients with advanced COVID-19 may develop a coagulopathy, which meets established laboratory criteria for disseminated intravascular coagulation, but is not typically associated with relevant bleeding. Similar to other medical societies, the Society of Thrombosis and Haemostasis Research has issued empirical recommendations on initiation, dosing, and duration of pharmacological VTE prophylaxis in COVID-19 patients.


Assuntos
Transtornos da Coagulação Sanguínea/etiologia , Infecções por Coronavirus/complicações , Pneumonia Viral/complicações , Tromboembolia Venosa/prevenção & controle , Anticoagulantes/uso terapêutico , Autopsia/estatística & dados numéricos , Betacoronavirus/isolamento & purificação , Transtornos da Coagulação Sanguínea/epidemiologia , COVID-19 , Estudos de Casos e Controles , China/epidemiologia , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/patologia , Infecções por Coronavirus/virologia , Coagulação Intravascular Disseminada/sangue , Coagulação Intravascular Disseminada/diagnóstico , Coagulação Intravascular Disseminada/fisiopatologia , Heparina de Baixo Peso Molecular/uso terapêutico , Hospitalização , Humanos , Pandemias , Pneumonia Viral/epidemiologia , Pneumonia Viral/patologia , Pneumonia Viral/virologia , SARS-CoV-2 , Sobreviventes/estatística & dados numéricos , Síndrome de Resposta Inflamatória Sistêmica/fisiopatologia , Síndrome de Resposta Inflamatória Sistêmica/virologia , Trombofilia/etiologia , Tromboembolia Venosa/tratamento farmacológico , Tromboembolia Venosa/mortalidade
17.
Ann Neurol ; 88(1): 1-11, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32506549

RESUMO

In less than 6 months, the severe acute respiratory syndrome-coronavirus type 2 (SARS-CoV-2) has spread worldwide infecting nearly 6 million people and killing over 350,000. Initially thought to be restricted to the respiratory system, we now understand that coronavirus disease 2019 (COVID-19) also involves multiple other organs, including the central and peripheral nervous system. The number of recognized neurologic manifestations of SARS-CoV-2 infection is rapidly accumulating. These may result from a variety of mechanisms, including virus-induced hyperinflammatory and hypercoagulable states, direct virus infection of the central nervous system (CNS), and postinfectious immune mediated processes. Example of COVID-19 CNS disease include encephalopathy, encephalitis, acute disseminated encephalomyelitis, meningitis, ischemic and hemorrhagic stroke, venous sinus thrombosis, and endothelialitis. In the peripheral nervous system, COVID-19 is associated with dysfunction of smell and taste, muscle injury, the Guillain-Barre syndrome, and its variants. Due to its worldwide distribution and multifactorial pathogenic mechanisms, COVID-19 poses a global threat to the entire nervous system. Although our understanding of SARS-CoV-2 neuropathogenesis is still incomplete and our knowledge is evolving rapidly, we hope that this review will provide a useful framework and help neurologists in understanding the many neurologic facets of COVID-19. ANN NEUROL 2020;88:1-11 ANN NEUROL 2020;88:1-11.


Assuntos
Betacoronavirus , Infecções por Coronavirus/fisiopatologia , Doenças do Sistema Nervoso/fisiopatologia , Pneumonia Viral/fisiopatologia , Encefalopatias/etiologia , Encefalopatias/fisiopatologia , Isquemia Encefálica/etiologia , Isquemia Encefálica/fisiopatologia , COVID-19 , Infecções por Coronavirus/complicações , Coagulação Intravascular Disseminada/etiologia , Coagulação Intravascular Disseminada/fisiopatologia , Encefalite/etiologia , Encefalite/fisiopatologia , Encefalomielite Aguda Disseminada/etiologia , Encefalomielite Aguda Disseminada/fisiopatologia , Síndrome de Guillain-Barré/etiologia , Síndrome de Guillain-Barré/fisiopatologia , Humanos , Inflamação , Hemorragias Intracranianas/etiologia , Hemorragias Intracranianas/fisiopatologia , Leucoencefalite Hemorrágica Aguda/etiologia , Leucoencefalite Hemorrágica Aguda/fisiopatologia , Meningite Viral/etiologia , Meningite Viral/fisiopatologia , Doenças do Sistema Nervoso/etiologia , Transtornos do Olfato/etiologia , Transtornos do Olfato/fisiopatologia , Pandemias , Pneumonia Viral/complicações , SARS-CoV-2 , Trombose dos Seios Intracranianos/etiologia , Trombose dos Seios Intracranianos/fisiopatologia , Acidente Vascular Cerebral/etiologia , Acidente Vascular Cerebral/fisiopatologia , Trombofilia/etiologia , Trombofilia/fisiopatologia
18.
Toxins (Basel) ; 12(5)2020 05 05.
Artigo em Inglês | MEDLINE | ID: mdl-32380672

RESUMO

Pit viper venom commonly causes venom-induced consumptive coagulopathy (VICC), which can be complicated by life-threatening hemorrhage. VICC has a complex pathophysiology affecting multiple steps of the coagulation pathway. Early detection of VICC is challenging because conventional blood tests such as prothrombin time (PT) and activated partial thromboplastin time (aPTT) are unreliable for early-stage monitoring of VICC progress. As the effects on the coagulation cascade may differ, even in the same species, the traditional coagulation pathways cannot fully explain the mechanisms involved in VICC or may be too slow to have any clinical utility. Antivenom should be promptly administered to neutralize the lethal toxins, although its efficacy remains controversial. Transfusion, including fresh frozen plasma, cryoprecipitate, and specific clotting factors, has also been performed in patients with bleeding. The effectiveness of viscoelastic monitoring in the treatment of VICC remains poorly understood. The development of VICC can be clarified using thromboelastography (TEG), which shows the procoagulant and anticoagulant effects of snake venom. Therefore, we believe that TEG may be able to be used to guide hemostatic resuscitation in victims of VICC. Here, we aim to discuss the advantages of TEG by comparing it with traditional coagulation tests and propose potential treatment options for VICC.


Assuntos
Antivenenos/uso terapêutico , Coagulação Sanguínea/efeitos dos fármacos , Transfusão de Sangue , Venenos de Crotalídeos/metabolismo , Crotalinae/metabolismo , Coagulação Intravascular Disseminada/terapia , Mordeduras de Serpentes/terapia , Tromboelastografia , Animais , Coagulação Intravascular Disseminada/sangue , Coagulação Intravascular Disseminada/diagnóstico , Coagulação Intravascular Disseminada/fisiopatologia , Monitoramento de Medicamentos , Humanos , Valor Preditivo dos Testes , Mordeduras de Serpentes/sangue , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/fisiopatologia , Resultado do Tratamento
19.
Crit Care Clin ; 36(2): 201-216, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32172809

RESUMO

Lethal features of sepsis and acute respiratory distress syndrome (ARDS) relate to the health of small blood vessels. For example, alveolar infiltration with proteinaceous fluid is often driven by breach of the microvascular barrier. Spontaneous thrombus formation within inflamed microvessels exacerbates organ ischemia, and in its final stages, erupts into overt disseminated intravascular coagulation. Disruption of an endothelial signaling axis, the Angiopoietin-Tie2 pathway, may mediate the abrupt transition from microvascular integrity to pathologic disruption. This review summarizes preclinical and clinical results that implicate the Tie2 pathway as a promising target to restore microvascular health in sepsis and ARDS.


Assuntos
Injúria Renal Aguda/metabolismo , Angiopoietina-1/metabolismo , Angiopoietina-2/metabolismo , Estado Terminal , Coagulação Intravascular Disseminada/metabolismo , Receptor TIE-2/metabolismo , Síndrome do Desconforto Respiratório/metabolismo , Sepse/metabolismo , Injúria Renal Aguda/enzimologia , Injúria Renal Aguda/fisiopatologia , Animais , Coagulação Intravascular Disseminada/enzimologia , Coagulação Intravascular Disseminada/fisiopatologia , Endotélio Vascular/metabolismo , Endotélio Vascular/fisiopatologia , Homeostase/fisiologia , Humanos , Síndrome do Desconforto Respiratório/enzimologia , Síndrome do Desconforto Respiratório/fisiopatologia , Sepse/enzimologia , Sepse/fisiopatologia , Transdução de Sinais
20.
Drug Dev Res ; 81(4): 517-525, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32065451

RESUMO

Lipopolysaccharide (LPS) is a toxic component of the outer membrane of gram-negative bacteria that can activate the blood coagulation system, leading to disseminated intravascular coagulation (DIC). DIC is a syndrome characterized by thromboembolism and multiple organ failure. Herein, the beneficial effect of paeoniflorin (PF) on the alleviation of LPS-induced DIC was investigated with an experimental DIC mouse model. Briefly, mice were randomly divided into the following six groups: (1) control; (2) LPS; (3) heparin; (4) low-PF treatment; (5) medium-PF treatment; and (6) high-PF treatment. The histological morphology of the liver and kidney was observed, and the coagulation indicators (such as prothrombin time), function indicators (such as alanine transferase), and inflammatory factors (such as TNF-α) were detected. Additionally, an in vitro cell inflammation model using RAW 264.7 murine macrophages was established. Activation of the nuclear factor kappa B (NF-κB) signaling pathway and tumor necrosis factor-α (TNF-α) were determined by western blotting. Based on our findings, PF could significantly improve the histological morphology of the liver and kidney, indicating that PF protects the liver and kidney against damage induced by LPS. Additionally, PF improved the function and coagulation indicators and reduced the production of inflammatory factors. In vitro, PF inhibited the expression of TNF-α by suppressing NF-κB signaling pathway activation. Collectively, our findings support the hypothesis that PF has anti-inflammatory and anticoagulation effects for the alleviation of LPS-induced DIC. PF is thus a potential co-treatment option for DIC.


Assuntos
Anti-Inflamatórios/farmacologia , Coagulação Intravascular Disseminada/tratamento farmacológico , Glucosídeos/farmacologia , Inflamação/tratamento farmacológico , Monoterpenos/farmacologia , Alanina Transaminase/metabolismo , Animais , Coagulação Sanguínea/efeitos dos fármacos , Modelos Animais de Doenças , Coagulação Intravascular Disseminada/fisiopatologia , Inflamação/patologia , Lipopolissacarídeos , Macrófagos/efeitos dos fármacos , Macrófagos/patologia , Camundongos , NF-kappa B/metabolismo , Células RAW 264.7 , Transdução de Sinais/efeitos dos fármacos , Fator de Necrose Tumoral alfa/metabolismo
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