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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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Varicose Veins I: Introduction01:26

Varicose Veins I: Introduction

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Varicose veins, or varicosities, are abnormally dilated and twisted superficial veins caused by venous valve incompetence. This condition commonly affects the lower extremities, especially the saphenous veins, due to the higher pressure from prolonged standing and walking. However, varicosities can also occur in other areas, such as the esophagus, vulva, spermatic cords, and anorectal region.Etiology and typesPrimary varicose veins, often idiopathic, are more common in women due to inherent...
341
Venous Thrombosis IV: Nursing Management01:30

Venous Thrombosis IV: Nursing Management

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Nursing management begins with a thorough assessment of the patient's health history. Key factors include trauma to veins, peripherally inserted central catheters, varicose veins, recent pregnancy or childbirth, surgery, bacteremia, prolonged bed rest, atrial fibrillation, COPD, heart failure, cancer, coagulation disorders, myocardial infarction, spinal cord injury, stroke, prolonged travel, recent bone fractures, and dehydration. Review medication intake, particularly oral contraceptives,...
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Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

439
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...
439
Varicose Veins II: Diagnostic Studies and Interprofessional Care01:26

Varicose Veins II: Diagnostic Studies and Interprofessional Care

290
Varicose veins, or varicosities, develop when the valves in the veins, which control blood flow, weaken or damage. It causes blood to pool and the veins to enlarge. Understanding the clinical manifestations, diagnostic approaches, and management options for varicose veins is crucial for effective treatment and relief.Clinical manifestationsClinical manifestations of varicose veins include a heavy, achy feeling or pain after prolonged standing or sitting. This discomfort can often be relieved by...
290
Venous Thrombosis III: Interprofessional Care01:29

Venous Thrombosis III: Interprofessional Care

466
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...
466

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Related Experiment Video

Updated: Apr 4, 2026

A Rabbit Venous Interposition Model Mimicking Revascularization Surgery using Vein Grafts to Assess Intimal Hyperplasia under Arterial Blood Pressure
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Pathogenesis of venous ulcer.

Anthony Comerota1, Fedor Lurie1

  • 1Jobst Vascular Institute, 2109 Hughes Drive, Toledo, OH 43606.

Seminars in Vascular Surgery
|September 12, 2015
PubMed
Summary

Venous hypertension causes cellular events leading to venous leg ulcers. Further research is needed to fully understand the pathophysiology of chronic venous disease progression.

Area of Science:

  • Vascular biology
  • Pathophysiology

Background:

  • Chronic venous diseases feature hemodynamic abnormalities.
  • Venous hypertension initiates a cascade of cellular and humoral events.
  • Genetic factors can magnify these pathophysiological processes.

Purpose of the Study:

  • To outline the pathophysiology of venous ulceration.
  • To establish a framework for future research into chronic venous disease progression.

Main Methods:

  • Review of underlying pathophysiological mechanisms.
  • Analysis of cellular and humoral events in venous hypertension.
  • Consideration of genetic factors in disease progression.

Main Results:

  • Venous hypertension is the primary driver of venous ulceration.

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  • A complex cascade of events, influenced by genetics, leads to ulcer development.
  • The progression of chronic venous disease to ulcers is not fully understood.

    • Conclusions:

    • The pathophysiology of venous leg ulcers involves venous hypertension and genetic factors.
    • Understanding the progression of chronic venous disease requires further investigation.
    • A foundational framework for future research has been established.