Related Experiment Video
Updated: Aug 6, 2026

Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
Published on: January 15, 2022
The natural history of aneurysmal coronary artery disease
V P Demopoulos1, C D Olympios, C N Fakiolas
1Department of Cardiology, Tzanio State Hospital, Pireus, Greece.
Insights
Coronary artery ectasia does not increase risk when combined with obstructive coronary artery disease. Patients with isolated ectasia have a good prognosis, with few cardiac events and good exercise capacity.
Area of Science:
- Cardiology
- Vascular Medicine
- Ischemic Heart Disease
Background:
- Coronary artery ectasia (CAE) is a dilation of coronary arteries.
- Its contribution to ischemic heart disease (IHD) morbidity and mortality is not fully understood.
- CAE can occur isolated or with obstructive coronary artery disease (CAD).
Purpose of the Study:
- To evaluate the impact of CAE, alone or with obstructive CAD, on IHD outcomes.
- To compare morbidity and mortality in patients with CAE versus those with obstructive CAD.
Main Methods:
- Retrospective analysis of patients undergoing coronary arteriography.
- Three groups were studied: CAE with obstructive CAD (Group A), isolated CAE (Group B), and obstructive CAD without CAE (Group C).
- Patients were followed for approximately two years.
Main Results:
- Group A patients showed similar outcomes to Group C regarding myocardial infarction, exercise performance, and cardiac death.
- Patients with isolated CAE (Group B) had a lower incidence of previous myocardial infarction and better exercise tolerance.
- Group B experienced no myocardial infarctions or cardiac deaths, with a low incidence of unstable angina.
Conclusions:
- Coronary artery ectasia does not add risk when coexisting with obstructive coronary artery disease.
- Isolated coronary artery ectasia is associated with a favorable prognosis.
- The use of oral anticoagulants in patients with pure ectasia warrants careful consideration.
Objective:
To assess the contribution of coronary artery ectasia, either isolated or in association with obstructive coronary artery disease, to morbidity and mortality from ischaemic heart disease.
Design:
A retrospective study of patients undergoing coronary arteriography at a tertiary cardiac centre.
Patients And Methods:
The epidemiological, clinical, arteriographic, and follow up characteristics of three groups of patients were examined: group A, 172 patients with coronary artery ectasia and coexisting significant coronary artery disease; group B, 31 patients with coronary artery ectasia only; group C, 165 patients with significant coronary artery disease but without ectasia, matched for sex and age with group A.
Results:
Group A patients had a similar incidence of a previous myocardial infarction to group C patients (61.6% v 64.2%), exercise performance, severity of obstructive lesions (CASS score 2.19 v 2.14), and similar distribution of diseased vessels. At follow up of approximately two years they experienced a similar incidence of unstable angina (7.5% v 4.4%) and myocardial infarction plus cardiac death (4.9% v 6.1%). They underwent bypass surgery with similar frequency (39% v 42%) but there was a lower frequency of percutaneous transluminal coronary angioplasty (5.8% v 17%, P < 0.01). Patients with pure coronary ectasia (group B) had a lower incidence of a previous myocardial infarction (38.7%, 12/31, P < 0.05) than the two other groups. The infarct in all cases was related to an ectatic artery. Their exercise performance and ejection fraction (9 (SD 3) minutes and 56.5(9)%) were higher (P < 0.01) than group A (5 (2) minutes, 48.3(10)%) and group C (5.3 (2) minutes, 49.3(10)%). Group B had no myocardial infarctions, cardiac death, surgery, or intervention at follow up; 4.4% (5/115) developed unstable angina. The incidence of angina at study entry was similar in all three groups (38.7-49.7%).
Conclusions:
Coronary artery ectasia does not confer added risk in patients with coexisting obstructive coronary artery disease. Although there is a measurable incidence of previous myocardial infarction, patients with pure ectasia have a good prognosis. The wisdom of giving oral anticoagulants to such patients is questioned.
Related Concept Videos
Coronary Artery Disease I: Introduction
Coronary Artery Disease II: Pathophysiology
Coronary Artery Disease III: Clinical Manifestations
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations
Aneurysm I: Introduction
Aneurysm III: Interprofessional Care

