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Updated: Oct 21, 2025

In Vitro Microfluidic Disease Model to Study Whole Blood-Endothelial Interactions and Blood Clot Dynamics in Real-Time
Published on: May 24, 2020
Thrombosis, an important piece in the COVID-19 puzzle: From pathophysiology to therapy
Elena Bobescu1, Luigi Geo Marceanu2, Alexandru Covaciu1
1Department of Medical and Surgical Specialties, Faculty of Medicine, Transilvania University of Brasov; Brasov- Romania;Department of Cardiology, Clinical County Emergency Hospital Brasov; Brasov-Romania.
Insights
Coronavirus disease 2019 (COVID-19) significantly increases thrombosis risk. Heparin is recommended for treatment, showing benefits beyond anticoagulation, alongside improved patient prognosis with existing anticoagulant therapy.
Area of Science:
- Medical Research
- Infectious Diseases
- Cardiovascular Medicine
Background:
- Coronavirus disease 2019 (COVID-19) presents complex challenges in patient care.
- A significant aspect of COVID-19 is its high thrombogenic potential, leading to thrombotic complications.
Purpose of the Study:
- To review existing literature on COVID-19 associated thrombosis.
- To explore the pathophysiology, treatment strategies, and impact on patient outcomes.
Main Methods:
- Systematic search of online databases including MEDLINE/PubMed, Google Scholar, ScienceDirect, Wiley Online Library, and Nature Public Health Emergency Collection.
- Selection of studies specifically focusing on COVID-19 and thrombosis.
Main Results:
- Elevated D-dimer levels in COVID-19 patients correlate with infection severity and mortality, serving as a predictive factor for thrombosis.
- Patients on chronic anticoagulant therapy prior to COVID-19 infection generally experienced better prognoses.
- Heparin demonstrated anticoagulant, antiviral, and anti-inflammatory effects, positioning it as a recommended treatment.
Conclusions:
- COVID-19 infections are frequently complicated by thrombotic pathology.
- High D-dimer levels predict a severe prognosis; heparin is the recommended anticoagulant, followed by direct oral anticoagulants, associated with reduced mortality.
- Further large-scale randomized studies and therapeutic guidelines are necessary for managing COVID-19 associated thrombosis.
Abstract:
A lot of data about coronavirus disease 2019 (COVID-19) have been already published; however, these still form only a part of the pandemic puzzle. Once we have all the pieces of the puzzle, we will be able to successfully treat this disease with its multiple challenges. COVID-19 has a high thrombogenic potential. In this study, we aimed to review published data about COVID-19 associated thrombosis from pathophysiology to treatment and the role in patient evolution. We searched for articles and studies published online through MEDLINE/PubMed database, Google Scholar, ScienceDirect, Wiley Online Library, and Nature Public Health Emergency Collection. We found numerous articles regarding COVID-19 infection but selected only those focused on thrombosis. D-dimers have a predictive value in identifying thrombosis and a high level correlates with the severity of the infection and death. Most patients who were on chronic anticoagulant therapy before contracting the virus had a better prognosis. Heparin has other favorable effects such as a direct antiviral and anti-inflammatory effect in addition to its anticoagulant effect. COVID-19 infections are frequently complicated by thrombotic pathology. High plasma level of D-dimers is a predictive factor for severe prognosis, and the recommended anticoagulant, associated with low mortality, is heparin followed by a direct oral anticoagulant. Randomized studies in large groups of patients and therapeutic guidelines are still needed on this subject.
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