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Related Concept Videos

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

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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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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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Related Experiment Video

Updated: May 5, 2026

Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research
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Peripheral venous dilation using flow-mediated dilation response: A randomized crossover study.

Hiroya Endo1, Ryo Sekiguchi2, Michiko Kinoshita1

  • 1Department of Anesthesiology, Tokushima University Hospital, Tokushima, Japan.

The Journal of Vascular Access
|August 22, 2024
PubMed
Summary
This summary is machine-generated.

Flow-mediated dilation (FMD) significantly increases forearm vein size, suggesting it can improve peripheral intravenous cannulation success. This study demonstrates FMD

Keywords:
Catheterizationflow-mediated dilationperipheralvascular access devicesvasodilationveins

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Area of Science:

  • Vascular Physiology
  • Medical Devices
  • Clinical Interventions

Background:

  • Venodilation is critical for successful peripheral intravenous cannulation.
  • Flow-mediated dilation (FMD) is a response to ischemia-reperfusion.
  • This study investigated FMD's effect on peripheral forearm veins.

Purpose of the Study:

  • To test if FMD induces peripheral vein dilation.
  • To evaluate FMD as a method to enhance venous access.

Main Methods:

  • A crossover study with 15 healthy volunteers.
  • FMD involved brachial artery occlusion followed by reperfusion.
  • Control condition involved rest; outcomes included cephalic vein cross-sectional area, diameter, and perfusion index (PI).

Main Results:

  • FMD significantly increased cephalic vein cross-sectional area (37.7%) compared to control (2.2%).
  • Both longitudinal and transverse venous diameters expanded significantly with FMD.
  • Perfusion index (PI) also significantly increased post-FMD.

Conclusions:

  • FMD effectively dilates forearm cephalic veins.
  • This technique shows potential for improving peripheral intravenous cannulation success rates.