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Related Concept Videos

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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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 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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Acute Coronary Syndrome I: Introduction01:30

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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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Acute Coronary Syndrome V: Nursing Management01:26

Acute Coronary Syndrome V: Nursing Management

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Nursing Assessment:Nursing management of acute coronary syndrome (ACS) involves taking the patient's history, focusing on primary complaints such as chest pain, dyspnea, and excessive sweating (diaphoresis), as well as other symptoms like back or jaw pain, nausea, vomiting, palpitations, dizziness, and fatigue. The nurse also reviews the patient's history of cardiac events, risk factors such as hypertension, diabetes, smoking, family history, and current medications.In the objective assessment,...
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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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Related Experiment Video

Updated: Feb 8, 2026

Measurement of Myocardial Lactate Production for Diagnosis of Coronary Microvascular Spasm
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Myocardial Viability Testing to Guide Coronary Revascularization.

Adrián I Löffler1, Christopher M Kramer2

  • 1Division of Cardiovascular Medicine, University of Virginia Health System, Box 800170, 1215 Lee Street, Charlottesville, VA 22908, USA.

Interventional Cardiology Clinics
|July 10, 2018
PubMed
Summary
This summary is machine-generated.

Left ventricular dysfunction impacts survival in coronary artery disease patients. Myocardial viability testing identifies candidates who benefit most from revascularization, improving outcomes.

Keywords:
Chronic total occlusionHibernationRevascularizationViability

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Area of Science:

  • Cardiology
  • Medical Imaging
  • Nuclear Medicine

Background:

  • Left ventricular dysfunction is a key prognostic factor in coronary artery disease (CAD).
  • Revascularization improves survival in CAD patients compared to medical therapy alone.
  • Identifying myocardial viability is crucial for selecting patients for revascularization.

Purpose of the Study:

  • To review the role of myocardial viability testing in guiding revascularization decisions for patients with CAD.
  • To highlight common imaging modalities used for viability assessment.
  • To emphasize the utility of viability testing in chronic total occlusion interventions.

Main Methods:

  • Review of current literature on myocardial viability assessment.
  • Discussion of imaging techniques including single-photon emission computed tomography (SPECT), dobutamine stress echocardiography (DSE), cardiac MRI, and F18-fluorodeoxyglucose Positron Emission Tomography (FDG-PET).

Main Results:

  • Myocardial viability testing accurately identifies patients likely to benefit from revascularization.
  • SPECT, DSE, cardiac MRI, and FDG-PET are established methods for assessing myocardial viability.
  • Viability assessment aids in selecting patients for interventions, particularly for chronic total occlusions.

Conclusions:

  • Myocardial viability testing is essential for optimizing revascularization strategies in CAD.
  • The choice of imaging modality depends on clinical context and availability.
  • Accurate viability assessment improves patient selection for interventions and potentially enhances survival outcomes.