The Composition and Physical Properties of Clots in COVID-19 Pathology

Sierk Dauwerse1, Hugo Ten Cate2,3,4, Henri M H Spronk1,2,3

  • 1Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6200 MD Maastricht, The Netherlands.

Insights

Rotational ThromboElastoMetry (ROTEM) shows promise in predicting outcomes for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) patients. This review explores ROTEM

Area of Science:

  • Coagulation and Thrombosis Research
  • Infectious Disease Pathophysiology

Background:

  • Hemostasis dysregulation can cause bleeding or thrombosis.
  • COVID-19 patients exhibit a hypercoagulable state, increasing thrombotic risk.
  • Routine coagulation assays are insufficient for predicting thrombotic events in COVID-19.

Purpose of the Study:

  • To review the utility of ROtational ThromboElastoMetry (ROTEM) in COVID-19 patients.
  • To focus on interpreting ROTEM clot formation curves in relation to COVID-19 coagulopathy.
  • To introduce novel ROTEM parameters for improved patient outcome prediction.

Main Methods:

  • Review of existing literature on ROTEM in COVID-19.
  • Analysis of ROTEM clot formation curve symmetry.
  • Introduction and discussion of new ROTEM parameters.

Main Results:

  • ROTEM is a promising tool for predicting outcomes in hospitalized COVID-19 patients.
  • Specific ROTEM curve characteristics correlate with coagulopathy in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection.
  • New ROTEM parameters may enhance differentiation of COVID-19 patient outcomes.

Conclusions:

  • ROTEM offers valuable insights into COVID-19-associated coagulopathy.
  • ROTEM may improve the prediction of thrombotic events and patient outcomes in COVID-19.
  • Further research into novel ROTEM parameters is warranted.

Related Concept Videos

Coagulation01:09

Coagulation

The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries.
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
7.6K
Clot Retraction and Fibrinolysis01:16

Clot Retraction and Fibrinolysis

After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
7.1K
Colloids and Suspensions01:17

Colloids and Suspensions

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
2.5K
Venous Thrombosis I: Introduction01:30

Venous Thrombosis I: Introduction

Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...
52
Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
959
Extrinsic and Intrinsic Pathways of Hemostasis01:20

Extrinsic and Intrinsic Pathways of Hemostasis

Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
9.6K