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Related Concept Videos

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

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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Assessment of the Cardiovascular System III: Palpation

Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
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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...
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
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Venous Thrombosis IV: Nursing Management

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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.
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Related Experiment Video

Updated: May 13, 2026

Non-invasive Assessment of Microvascular and Endothelial Function
05:41

Non-invasive Assessment of Microvascular and Endothelial Function

Published on: January 29, 2013

Microcirculatory changes in venous disease.

L C Huisman1, C den Bakker, C H A Wittens

  • 1Department of Surgery, Flevoziekenhuis, Almere, Postbus 3005, 1300 EG Almere, The Netherlands. lhuisman@flevoziekenhuis.nl

Phlebology
|March 14, 2013
PubMed
Summary
This summary is machine-generated.

Laser speckle imaging shows potential for measuring microcirculatory blood flow in venous ulcers, but practical challenges like movement artifacts currently limit its use. Further research is needed to establish its diagnostic value in wound care.

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Published on: October 22, 2014

Area of Science:

  • Biomedical Engineering
  • Vascular Medicine
  • Wound Healing Research

Background:

  • Venous ulcers are chronic wounds often associated with impaired microcirculation.
  • Accurate assessment of microcirculatory blood flow is crucial for effective wound management.
  • Laser speckle imaging (LSI) is a non-invasive technique for visualizing blood flow.

Purpose of the Study:

  • To evaluate the feasibility of using laser speckle imaging to measure microcirculatory blood flow changes in patients with venous leg ulcers.
  • To assess the potential of LSI as a diagnostic tool in daily wound care practice.

Main Methods:

  • Nine patients with leg ulcers were included in the study.
  • Laser speckle imaging was performed in a sitting position.
  • Venous hypertension was mimicked by inflating a blood pressure cuff to 60 mmHg around the legs.

Main Results:

  • Measurements were inconclusive due to significant practical challenges.
  • Movement artifacts and inadequate wound visualization interfered with data acquisition.
  • The study could not reliably assess microcirculatory changes using LSI under the tested conditions.

Conclusions:

  • The clinical utility of laser speckle imaging for routine venous ulcer care requires further investigation.
  • Addressing practical limitations is essential for LSI to become a valuable diagnostic tool.
  • Reliable microcirculation measurements in venous ulcers could potentially predict healing and recurrence.