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Related Concept Videos

Venous Thrombosis I: Introduction01:30

Venous Thrombosis I: Introduction

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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...
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Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

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The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
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Venous Thrombosis III: Interprofessional Care01:29

Venous Thrombosis III: Interprofessional Care

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Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
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Clot Retraction and Fibrinolysis01:16

Clot Retraction and Fibrinolysis

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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.
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Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

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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...
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Formation of the Platelet Plug01:22

Formation of the Platelet Plug

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The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
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Author Spotlight: Revealing Platelet Dynamics Through Advances in Structural Hematology
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A microstructurally inspired damage model for early venous thrombus.

Manuel K Rausch1, Jay D Humphrey1

  • 1Department of Biomedical Engineering, Yale University, New Haven, CT, United States.

Journal of the Mechanical Behavior of Biomedical Materials
|November 3, 2015
PubMed
Summary
This summary is machine-generated.

This study introduces a new model for blood clot (thrombus) mechanics, focusing on how damage affects its strength. The model accurately predicts clot behavior, aiding research into thrombotic diseases.

Keywords:
Continuum damage mechanicsIntraluminal thrombusMaterial modelingUniaxial tensile properties

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Cardiovascular Research

Background:

  • Thrombotic disease progression is often linked to accumulative damage.
  • Understanding thrombus mechanics, particularly damage consequences, is crucial for disease comprehension.

Purpose of the Study:

  • To introduce a novel, microstructurally inspired constitutive model for thrombus.
  • To incorporate stretch-driven damage on a microscopic level within the model.
  • To demonstrate the model's ability to represent thrombus mechanical behavior, including Mullins-type damage.

Main Methods:

  • Developed a constitutive model for thrombus based on microstructural fiber distribution and crimp levels.
  • Integrated a parameter for microscopic, stretch-driven damage.
  • Fitted the model to uniaxial tensile test data from early venous thrombus.

Main Results:

  • The model accurately represents thrombus mechanical behavior, including Mullins-type damage.
  • Achieved agreement with experimental data comparable to existing models for elastomer damage.
  • The novel model offers a microstructural basis and fewer parameters than previous approaches.

Conclusions:

  • The developed model represents a significant advancement in understanding intraluminal thrombus mechanics and damage.
  • This approach can aid in studying both physiological and pathological thrombotic events.
  • Further research into thrombus mechanics can improve treatments for thrombotic diseases.