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Published on: May 24, 2020
COVID-19 and Venous Thromboembolism: From Pathological Mechanisms to Clinical Management
Xianghui Zhou1,2, Zhipeng Cheng1,2, Yu Hu1,2,3
1Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
Insights
Coronavirus disease 2019 (COVID-19) significantly increases the risk of venous thromboembolism (VTE) due to endothelial dysfunction, hypercoagulability, and abnormal blood flow. Further research into COVID-19 thrombosis mechanisms and treatments is crucial.
Area of Science:
- Medical Research
- Infectious Diseases
- Cardiovascular Medicine
Background:
- Coronavirus disease 2019 (COVID-19) is a global pandemic caused by SARS-CoV-2.
- Thrombotic events, particularly venous thromboembolism (VTE), are frequent in COVID-19 patients and linked to disease severity.
- The incidence of VTE in hospitalized and critical COVID-19 cases is notably high.
Purpose of the Study:
- To explore the pathophysiology of VTE in COVID-19.
- To investigate the risk factors for thrombosis in COVID-19, applying Virchow's triad.
- To discuss current VTE treatments and potential therapeutic strategies for COVID-19-associated thrombosis.
Main Methods:
- Review of pathological mechanisms of VTE in COVID-19.
- Analysis of endothelial dysfunction, hypercoagulability, and abnormal blood flow.
- Discussion of VTE treatment and clinical trials for heparin therapy.
Main Results:
- Virchow's triad (endothelial dysfunction, hypercoagulability, abnormal blood flow) is relevant to COVID-19-associated VTE.
- Understanding these mechanisms is key to developing effective treatments.
- Exploration of broader antithrombotic strategies, including antiplatelet, antifibrinolytic, and anti-inflammatory drugs.
Conclusions:
- COVID-19 presents complex challenges in VTE pathophysiology and prevention.
- Further investigation into antithrombotic therapies is needed to improve patient prognosis.
- Comprehensive understanding of COVID-19 thrombosis is essential for clinical management.
Abstract:
Coronavirus disease 2019 (COVID-19), which is becoming a global pandemic, is caused by SARS-CoV-2 infection. In COVID-19, thrombotic events occur frequently, mainly venous thromboembolism (VTE), which is closely related to disease severity and clinical prognosis. Compared with historical controls, the occurrence of VTE in hospitalized and critical COVID-19 patients is incredibly high. However, the pathophysiology of thrombosis and the best strategies for thrombosis prevention in COVID-19 remain unclear, thus needing further exploration. Virchow's triad elements have been proposed as important risk factors for thrombotic diseases. Therefore, the three factors outlined by Virchow can also be applied to the formation of venous thrombosis in the COVID-19 setting. A thorough understanding of the complex interactions in these processes is important in the search for effective treatments for COVID-19. In this work, we focus on the pathological mechanisms of VTE in COVID-19 from the aspects of endothelial dysfunction, hypercoagulability, abnormal blood flow. We also discuss the treatment of VTE as well as the ongoing clinical trials of heparin anticoagulant therapy. In addition, according to the pathophysiological mechanism of COVID-19-associated thrombosis, we extended the range of antithrombotic drugs including antiplatelet drugs, antifibrinolytic drugs, and anti-inflammatory drugs, hoping to find effective drug therapy and improve the prognosis of VTE in COVID-19 patients.
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