Related Experiment Video

Updated: Jul 30, 2025

Creation of Two Saccular Elastase-Digested Aneurysms with Different Hemodynamics in One Rabbit
07:04

Creation of Two Saccular Elastase-Digested Aneurysms with Different Hemodynamics in One Rabbit

Published on: April 15, 2021

2.2K

Is spontaneous coronary artery dissection (SCAD) related to local anatomy and hemodynamics? An exploratory study

Alessandro Candreva1, Maurizio Lodi Rizzini2, Victor Schweiger3

  • 1Department of Cardiology, University Heart Center, Zurich University Hospital, Zurich, Switzerland; PoliTo(BIO) Med Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy.

International Journal of Cardiology
|May 18, 2023
PubMed

Insights

Spontaneous coronary artery dissection (SCAD) involves unique vessel anatomy and blood flow patterns. This study suggests that the interaction between local vessel shape and shear forces may play a role in SCAD development.

Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Vascular Biology

Background:

  • Spontaneous coronary artery dissection (SCAD) is a growing cause of myocardial infarction with unknown origins.
  • Understanding SCAD pathophysiology is crucial for effective diagnosis and treatment.

Purpose of the Study:

  • To investigate if vascular segments affected by SCAD exhibit distinct local anatomy and hemodynamic characteristics.
  • To explore the relationship between vessel geometry, blood flow, and SCAD occurrence.

Main Methods:

  • Three-dimensional reconstruction and morphometric analysis of healed SCAD coronary arteries.
  • Computational fluid dynamics (CFD) simulations to assess wall shear stress (WSS) and flow patterns.
  • Correlation of anatomical features (curvature, torsion) with hemodynamic parameters (TAWSS, TSVI) in SCAD segments.

Main Results:

  • Healed SCAD segments showed high curvature/torsion and localized flow disturbances.
  • In all cases, hot spots for anatomical and hemodynamic parameters co-localized within the healed SCAD segment.
  • SCAD near bifurcations exhibited lower peak TAWSS and less frequent TSVI hot spots compared to other locations.

Conclusions:

  • Vascular segments affected by SCAD are characterized by complex anatomy and altered shear stress profiles.
  • These findings suggest a potential pathophysiological role for the interplay between vessel anatomy and blood flow dynamics in SCAD.
  • Further research into these interactions could elucidate SCAD mechanisms.
Abstract

Keywords:
Computational fluid dynamicsCoronary tortuositySpontaneous coronary artery dissectionWall shear stress

More Related Videos

Author Spotlight: Using Point-of-Care Ultrasound for Comprehensive Evaluation of the Abdominal Aorta07:12

Author Spotlight: Using Point-of-Care Ultrasound for Comprehensive Evaluation of the Abdominal Aorta

Published on: September 8, 2023

2.5K
Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery06:18

Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery

Published on: December 6, 2024

624

Related Concept Videos

Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
34
Coronary Artery Disease II: Pathophysiology01:26

Coronary Artery Disease II: Pathophysiology

Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
16
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
11
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
24
Aneurysm I: Introduction01:30

Aneurysm I: Introduction

An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
16