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Related Concept Videos

Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

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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...
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Ischemic Heart Disease: Overview01:17

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Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
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Angina II: Classification01:27

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Angina, also known as angina pectoris, is a chest pain resulting from diminished blood flow to the heart muscle and is often a symptom of coronary artery disease. Angina presents several variants with distinctive attributes, etiologies, and therapeutic approaches. The main types of angina include stable, unstable, variant (Prinzmetal's), microvascular, intractable, and silent ischemia.Stable angina is caused by atherosclerosis, which leads to the formation of plaques that narrow the coronary...
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Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

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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...
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Coronary Artery Disease I: Introduction01:30

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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 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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Myocardial Infarction and Functional Outcome Assessment in Pigs
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Myocardial Infarction with Nonobstructive Coronary Arteries.

H R Reynolds1, N R Smilowitz1

  • 1Leon H. Charney Division of Cardiology, Department of Medicine, NYU Grossman School of Medicine, New York, NY, USA;

Annual Review of Medicine
|September 30, 2022
PubMed
Summary
This summary is machine-generated.

Myocardial infarction with nonobstructive coronary arteries (MINOCA) affects 6-8% of heart attack patients. Diagnosing MINOCA requires systematic approaches, as its causes and optimal treatments remain uncertain.

Keywords:
MINOCAcoronary spasmmyocardial infarctionmyocardial injurynonobstructive coronary arteriestakotsubo syndrome

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Area of Science:

  • Cardiology
  • Cardiovascular Medicine
  • Internal Medicine

Background:

  • Myocardial infarction with nonobstructive coronary arteries (MINOCA) is a distinct subtype of myocardial infarction (MI).
  • MINOCA accounts for 6-8% of spontaneous MI cases undergoing coronary angiography.
  • This condition disproportionately affects women but also occurs in men.

Purpose of the Study:

  • To highlight the variability in MINOCA pathogenesis compared to MI with obstructive coronary artery disease (MI-CAD).
  • To emphasize the need for systematic diagnostic approaches in MINOCA.
  • To underscore the uncertainty in optimal secondary prevention strategies and the need for dedicated clinical trials.

Main Methods:

  • Invasive coronary angiography.
  • Multivessel intracoronary imaging.
  • Provocative testing for coronary artery spasm.
  • Cardiac magnetic resonance imaging.

Main Results:

  • Pathogenesis of MINOCA is diverse, including atherosclerosis, thrombosis, and coronary artery spasm.
  • A combination of invasive angiography, intracoronary imaging, spasm testing, and cardiac MRI yields the highest diagnostic accuracy.
  • Current secondary prevention guidelines are based on MI-CAD, leaving MINOCA management uncertain.

Conclusions:

  • Systematic diagnostic strategies are crucial for identifying the underlying cause of MINOCA.
  • Optimal medical management for MINOCA requires further investigation.
  • Urgent need for clinical trials to establish evidence-based treatments for MINOCA patients.