Related Experiment Video

Updated: Oct 24, 2026

A Rabbit Venous Interposition Model Mimicking Revascularization Surgery using Vein Grafts to Assess Intimal Hyperplasia under Arterial Blood Pressure
07:02

A Rabbit Venous Interposition Model Mimicking Revascularization Surgery using Vein Grafts to Assess Intimal Hyperplasia under Arterial Blood Pressure

Published on: May 15, 2020

Pre-existing vascular disease in the radial artery and other coronary artery bypass conduits

S M Kane-ToddHall1, S P Taggart, H Clements-Jewery

  • 1University of Oxford Nuffield Department of Pathology and Bacteriology,England.

European Journal of Medical Research
|January 20, 1999
PubMed

Insights

The radial artery (RA) shows mild intimal thickening, medial sclerosis, and calcification more often than internal mammary artery (IMA) or long saphenous vein (LSV) grafts. Further research is needed to understand how this impacts coronary artery bypass graft (CABG) patency.

Area of Science:

  • Cardiovascular Surgery
  • Vascular Biology
  • Graft Patency Studies

Background:

  • Growing interest in using the radial artery (RA) for coronary artery bypass grafting (CABG).
  • Limited data exists on the prevalence of pre-existing disease within the radial artery.
  • Understanding vessel health is crucial for selecting optimal CABG conduits.

Purpose of the Study:

  • To compare the prevalence of pre-existing atherosclerotic disease in radial arteries (RA) versus internal mammary arteries (IMA) and long saphenous veins (LSV).
  • To assess histological characteristics of potential CABG conduits.
  • To evaluate the suitability of RA as a CABG graft based on vessel pathology.

Main Methods:

  • Histological analysis of 177 RAs, 168 IMAs, and 86 LSVs from patients undergoing CABG.
  • Assessment of stenosis, active atheroma, intimal thickening, and medial hyaline sclerosis.
  • Comparative analysis of disease prevalence across the three vessel types.

Main Results:

  • Over 98% of RAs, IMAs, and LSVs showed less than 30% stenosis.
  • Significant differences in mild disease prevalence: RAs had higher rates of intimal thickening (42%), medial sclerosis (46%), and medial calcification (9%) compared to IMA and LSV.
  • No severe stenosis was found in any conduit type.

Conclusions:

  • The majority of CABG conduits (RA, IMA, LSV) exhibit minimal severe disease.
  • Radial arteries demonstrate a higher prevalence of mild intimal thickening, medial sclerosis, and calcification compared to IMA and LSV.
  • The long-term implications of these findings on radial artery graft patency in CABG remain uncertain and require further investigation.
Abstract

More Related Videos

Transradial Access Chemoembolization for Hepatocellular Carcinoma Patients05:31

Transradial Access Chemoembolization for Hepatocellular Carcinoma Patients

Published on: September 20, 2020

Creating Radio-cephalic Arteriovenous Fistula in the Forearm with a Modified No-Touch Technique07:30

Creating Radio-cephalic Arteriovenous Fistula in the Forearm with a Modified No-Touch Technique

Published on: April 1, 2022

Related Concept Videos

Arteries of the Upper Limbs01:12

Arteries of the Upper Limbs

The subclavian artery transitions into the axillary artery as it exits the chest and enters the axillary region. This artery is critical for supplying blood to the shoulder area, including the head of the humerus, through the humeral circumflex arteries. As the vessel continues into the upper arm or brachium, it becomes the brachial artery. This artery plays a key role in vascularizing the brachial region and bifurcates at the elbow into several branches. These branches include the deep...
Coronary Artery Disease V: Interprofessional Care01:27

Coronary Artery Disease V: Interprofessional Care

Interprofessional care for coronary artery disease includes pharmacological therapy and revascularization procedures.Pharmacological therapy for Coronary Artery Disease (CAD) aims to manage symptoms, prevent complications, and improve patient outcomes through various classes of medications:Antiplatelet Agents:Aspirin and Clopidogrel: These medications inhibit platelet aggregation, preventing blood clots, which is crucial for avoiding heart attacks and strokes. Doctors often prescribe these...
Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
Peripheral Artery Disease III: Interprofessional Care01:27

Peripheral Artery Disease III: Interprofessional Care

Peripheral Artery Disease (PAD) is characterized by narrowed arteries that diminish blood flow to the extremities. Effective management of PAD requires an interprofessional approach involving various healthcare professionals. The critical aspects of interprofessional care for PAD patients focus on risk factor modification, drug therapy, exercise therapy, nutrition therapy, critical limb ischemia care, and interventional radiology and surgical procedures.The primary treatment goal for PAD...
Peripheral Artery Disease V: Postoperative Nursing Management01:23

Peripheral Artery Disease V: Postoperative Nursing Management

During the postoperative period, it is crucial to focus on maintaining circulation, identifying and managing potential complications, and planning for discharge.Nursing AssessmentVital signs monitoring: Regularly monitor vital signs, including blood pressure, heart rate, respiratory rate, and temperature, to detect early signs of complications such as bleeding and infection.Circulation assessment: Monitor pulses, perform Doppler assessments, and check capillary refill, color, temperature, and...