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Related Concept Videos

Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

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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...
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Coronary Artery Disease II: Pathophysiology01:26

Coronary Artery Disease II: Pathophysiology

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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...
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Coronary Artery Disease V: Interprofessional Care01:27

Coronary Artery Disease V: Interprofessional Care

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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...
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Coronary Artery Disease III: Clinical Manifestations01:30

Coronary Artery Disease III: Clinical Manifestations

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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...
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Coronary Artery Disease IV: Preventive Measures01:26

Coronary Artery Disease IV: Preventive Measures

703
Effective preventive measures for coronary artery disease (CAD) focus on controlling modifiable risk factors, including cholesterol abnormalities and lifestyle changes.Cholesterol ManagementFirst, the Mediterranean diet and the American Heart Association advocate for maintaining low-density lipoprotein (LDL) cholesterol levels below 100 mg/dL, with a more stringent recommendation of below 70 mg/dL for individuals at high risk. LDL cholesterol, often termed "bad cholesterol," can lead to the...
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Coronary Circulation01:21

Coronary Circulation

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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...
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Related Experiment Video

Updated: Feb 6, 2026

Direct Re-implantation of Left Coronary Artery into the Aorta in Adults with Anomalous Origin of Left Coronary Artery from the Pulmonary Artery ALCAPA
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Direct Re-implantation of Left Coronary Artery into the Aorta in Adults with Anomalous Origin of Left Coronary Artery from the Pulmonary Artery ALCAPA

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Coronary endothelial function and spontaneous coronary artery dissection.

Thomas M Waterbury1, Marysia S Tweet1, Sharonne N Hayes1

  • 1Department of Cardiovascular Diseases, Mayo Clinic, USA.

European Heart Journal. Acute Cardiovascular Care
|August 21, 2018
PubMed
Summary

Endothelial dysfunction does not appear to be the main cause of spontaneous coronary artery dissection (SCAD). This study found no predominant epicardial or microvascular dysfunction in SCAD patients.

Keywords:
Endothelial functionmicrovascular diseasespontaneous coronary artery dissection

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Area of Science:

  • Cardiology
  • Vascular Biology
  • Endothelial Function

Background:

  • Mechanisms of spontaneous coronary artery dissection (SCAD) are not well understood.
  • The potential role of endothelial dysfunction in SCAD requires further investigation.

Purpose of the Study:

  • To assess endothelial function in patients with a history of spontaneous coronary artery dissection.
  • To determine if endothelial dysfunction is a primary factor in SCAD.

Main Methods:

  • Retrospective analysis of 10 patients with prior SCAD undergoing invasive endothelial function testing.
  • Assessment of coronary epicardial and microvascular responses to acetylcholine, adenosine, and nitroglycerine.
  • Comparison with a control group of 232 individuals with normal endothelial function.

Main Results:

  • No predominant coronary epicardial or microvascular vasomotor dysfunction was observed in SCAD patients.
  • Acetylcholine response in SCAD patients was similar to controls, suggesting normal microvascular function.
  • Abnormal microvascular response to acetylcholine was seen in 40% of SCAD patients, often associated with left anterior descending artery or multivessel SCAD.

Conclusions:

  • Endothelial dysfunction is not the principal underlying mechanism in spontaneous coronary artery dissection.
  • Coronary epicardial and microvascular vasomotor function appear largely preserved in SCAD patients.