Related Experiment Video

Updated: May 5, 2026

Myocardial Infarction and Functional Outcome Assessment in Pigs
12:03

Myocardial Infarction and Functional Outcome Assessment in Pigs

Published on: April 25, 2014

31.4K

Coronary artery spatial distribution of acute myocardial infarction occlusions

John C Wang1, Sharon-Lise T Normand, Laura Mauri

  • 1Division of Clinical Biometrics, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA 02116, USA.

Circulation
|July 14, 2004
PubMed

Insights

Acute coronary occlusions causing ST-segment elevation myocardial infarctions (STEMIs) cluster in specific proximal areas of coronary arteries. Identifying these "hot spots" may improve vulnerable plaque detection and prevention strategies.

Area of Science:

  • Cardiovascular Medicine
  • Interventional Cardiology
  • Vulnerable Plaque Research

Background:

  • ST-segment elevation myocardial infarctions (STEMIs) result from acute coronary occlusions, primarily caused by atherosclerotic plaque rupture.
  • Current vulnerable plaque detection methods lack specific therapeutic guidance beyond general risk factor management.
  • This study investigates the spatial distribution of plaque ruptures to challenge the assumption of uniform occurrence throughout the coronary tree.

Purpose of the Study:

  • To test the hypothesis that acute coronary occlusions leading to STEMI do not occur uniformly in the coronary tree.
  • To identify specific high-risk locations within the coronary arteries for plaque rupture.
  • To inform the development of targeted diagnostic and therapeutic strategies for vulnerable plaques.

Main Methods:

  • Analysis of 208 consecutive STEMI patients presenting to Brigham and Women's Hospital.
  • Spatial mapping of the precise location of acute coronary occlusions within the major epicardial coronary arteries.
  • Application of Poisson regression to assess the relationship between occlusion location and distance from the ostium.

Main Results:

  • Acute coronary occlusions demonstrated a non-uniform distribution, clustering significantly within the proximal third of the right coronary artery, left anterior descending artery, and left circumflex artery.
  • A statistically significant decrease in the risk of acute coronary occlusion was observed with increasing distance from the ostium in all three major coronary arteries.
  • Specifically, for every 10-mm increase in distance from the ostium, the risk decreased by 13% (RCA), 30% (LAD), and 26% (LCx).

Conclusions:

  • Acute coronary occlusions leading to STEMI are concentrated in predictable "hot spots" within the proximal segments of coronary arteries.
  • Identifying these high-risk zones is crucial for advancing vulnerable plaque detection technologies.
  • These findings may facilitate the development of localized preventive strategies targeting specific arterial regions prone to plaque rupture.
Abstract

More Related Videos

Permanent Ligation of the Left Anterior Descending Coronary Artery in Mice: A Model of Post-myocardial Infarction Remodelling and Heart Failure09:37

Permanent Ligation of the Left Anterior Descending Coronary Artery in Mice: A Model of Post-myocardial Infarction Remodelling and Heart Failure

Published on: December 2, 2014

27.4K
In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography08:13

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

Published on: February 16, 2016

21.6K

Related Concept Videos

Coronary Circulation01:21

Coronary Circulation

The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
10.1K
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...
1.1K
Coronary Artery Disease III: Clinical Manifestations01:30

Coronary Artery Disease III: Clinical Manifestations

Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...
627
Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
2.1K
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...
954
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
500