Related Experiment Video

Updated: Jul 23, 2026

Measurement of the Hepatic Venous Pressure Gradient and Transjugular Liver Biopsy
07:10

Measurement of the Hepatic Venous Pressure Gradient and Transjugular Liver Biopsy

Published on: June 18, 2020

[Role of venous valves in the etiology of essential varices]

F Ortega Santana1, M Anitua Solano, J Guijarro de Pablos

  • 1Instituto de Educación Física de Canarias, Las Palmas de Gran Canarias, España.

Angiologia
|July 1, 1991
PubMed

Insights

The number of valves or valve atrophy in the great saphenous vein (GSV) does not appear to cause essential varicose veins. This study compared GSV valves in patients with varicose veins and healthy cadavers.

Area of Science:

  • Vascular anatomy
  • Venous pathophysiology

Context:

  • Varicose veins are a common condition affecting the venous system.
  • The great saphenous vein (GSV) is frequently involved in varicose vein development.
  • The role of valvular system integrity in varicose vein etiology is debated.

Purpose:

  • To investigate the relationship between the number and morphology of valves in the GSV and the development of essential varicose veins.
  • To compare valvular system characteristics in individuals with and without varicose veins.

Summary:

  • A comparative study analyzed the valvular system of the great saphenous vein (GSV) in patients with varicose veins and non-varicose cadavers.
  • Results indicated that neither the quantity of valves nor the presence of valve atrophy in the GSV is associated with the onset of essential varicose veins.

Impact:

  • This research challenges existing hypotheses regarding the direct link between GSV valve count/atrophy and essential varicose vein formation.
  • Findings may influence future research directions in venous insufficiency and the etiology of varicose veins.

More Related Videos

Occlusion of the Great and Small Saphenous Vein Using Copolymeric Glue Based on N-Butyl Cyanoacrylate and Methacryloxy Sulfolane08:05

Occlusion of the Great and Small Saphenous Vein Using Copolymeric Glue Based on N-Butyl Cyanoacrylate and Methacryloxy Sulfolane

Published on: December 9, 2022

Underwater Endoscopic Injection Sclerotherapy for Gastroesophageal Varices02:14

Underwater Endoscopic Injection Sclerotherapy for Gastroesophageal Varices

Published on: August 1, 2025

Related Concept Videos

Venous Return01:04

Venous Return

The circulatory system plays a crucial role in ensuring the optimal functioning of the human body. One of its critical components is venous return - the process that completes the blood circulation cycle. This article will delve into the concept of venous return, how it works, and its significance to our health.
What is Venous Return?
Venous return refers to the rate at which blood flows back to the heart from the body's peripheral veins. It's an integral part of the circulatory system as it...
Esophageal Varices-I: Introduction01:24

Esophageal Varices-I: Introduction

Esophageal varices are dilated, tortuous veins which are found mainly in the submucosa of the lower esophagus but which may also appear higher up or extend into the stomach. They develop due to increased pressure in the portal venous system, often as a result of liver cirrhosis. This condition scars and damages the liver, impeding normal blood flow through the portal vein. To compensate, blood seeks alternative pathways, forming fragile new vessels (varices) in the esophagus and stomach. These...
Esophageal Varices-II: Clinical Features and Management01:28

Esophageal Varices-II: Clinical Features and Management

Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol abuse, or...
Varicose Veins I: Introduction01:26

Varicose Veins I: Introduction

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

Varicose Veins II: Diagnostic Studies and Interprofessional Care

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...
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...