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Updated: Jul 20, 2026

A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
Published on: February 7, 2015
[Carotid intimal-medial thickening and endothelial function in coronary artery disease]
Graziela Chequer1, Bruno Ramos Nascimento, Túlio Pinho Navarro
1Hospital das Clínicas, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil. grazichequerr@hotmail.com
Insights
In coronary artery disease patients, impaired endothelial function (low %FMD) correlates with increased carotid intima-media thickness (IMT). This vascular alteration occurs regardless of coronary lesion severity.
Area of Science:
- Cardiovascular Medicine
- Vascular Biology
- Diagnostic Imaging
Background:
- Coronary artery disease (CAD) involves complex vascular changes.
- Endothelial dysfunction and atherosclerosis are key pathological processes in CAD.
- Carotid intima-media thickness (IMT) is a marker of subclinical atherosclerosis.
Purpose of the Study:
- To examine the relationship between endothelial function and carotid IMT in CAD patients.
- To assess if endothelial function and carotid IMT correlate with coronary lesion severity.
Main Methods:
- 43 CAD patients (mean age 60.5 years, 67.4% male) underwent assessment.
- Endothelial function measured via brachial artery reactivity test (%FMD).
- Carotid IMT evaluated using vascular ultrasound.
Main Results:
- Mean %FMD was 4.7 ± 3.6; mean carotid IMT was 1.08 ± 0.23 mm.
- A significant inverse correlation found between %FMD and carotid IMT (r = -0.315, p = 0.042).
- No correlation observed between %FMD or IMT and coronary lesion severity.
Conclusions:
- A correlation exists between carotid IMT and endothelial function (%FMD) in CAD.
- This indicates concurrent anatomical and functional vascular changes in CAD.
- These alterations are present irrespective of atherosclerotic lesion severity.
Objective:
To investigate the correlation between the endothelial function and the carotid intimal-medial thickening (IMT) in a population of patients with coronary artery disease, as well as that between the endothelial function and carotid IMT with the severity of the coronary lesions.
Methods:
Forty-three patients aged 60.5+/-9.2 years, (67.4% males) with coronary artery disease at the coronariography were studied. Endothelial function was assessed using the brachial artery reactivity test (BART), which measured the percentage of flow-mediated dilatation (%FMD). The carotid IMT was evaluated through vascular ultrasound.
Results:
The mean %FDM was 4.7 +/- 3.6 and the mean carotid IMT was 1.08 +/- 0.23 mm. The carotid MIT and %FMD measurements showed a statistically significant correlation, with Spearmans coefficient of 0.315, p= 0.042, demonstrating that lower %FMD values corresponded to an increased carotid IMT (r = -0.315, p = 0.042). There was no correlation between %FMD or IMT and the severity of coronary lesions.
Conclusions:
The presence of a correlation between carotid IMT and %FMD demonstrates a concomitance of anatomical and functional vascular alterations in coronary artery disease, regardless of the severity of the atherosclerotic lesions.
Related Concept Videos
Atherosclerosis I: Introduction
Coronary Artery Disease II: Pathophysiology
Coronary Artery Disease I: Introduction
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests
