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Related Concept Videos

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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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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Coronary Artery Disease II: Pathophysiology01:26

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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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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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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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Related Experiment Video

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Rodent Working Heart Model for the Study of Myocardial Performance and Oxygen Consumption
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Sudden Death: Myocardial Infarction in a Runner With Normal Coronary Arteries.

S Chillag, M Bates, R Voltin

    The Physician and Sportsmedicine
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    Sudden cardiac death during exercise is often due to coronary artery disease in older adults. In younger individuals, hypertrophic cardiomyopathy is a key factor. This case highlights myocardial infarction during exercise with an undetermined cause, possibly coronary artery spasm.

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    Area of Science:

    • Cardiology
    • Sports Medicine
    • Exercise Physiology

    Background:

    • Sudden death during or after exercise is a critical medical event.
    • Coronary artery disease is the primary cause in individuals over 40.
    • Hypertrophic cardiomyopathy and anomalous coronary arteries are leading causes in those under 30.

    Purpose of the Study:

    • To report a rare case of myocardial infarction during exercise with an unclear etiology.
    • To review the literature on exercise-related sudden cardiac death.
    • To explore potential causes, such as coronary artery spasm.

    Main Methods:

    • Case report presentation.
    • Literature review of sudden death during exercise.
    • Analysis of potential etiological factors.

    Main Results:

    • A case of exercise-induced myocardial infarction with no definitive cause identified is presented.
    • Only three similar cases have been previously documented in medical literature.
    • Coronary artery spasm is hypothesized as the potential cause.

    Conclusions:

    • Exercise-related sudden cardiac death has diverse etiologies depending on age.
    • Myocardial infarction during exercise without a clear cause is exceedingly rare.
    • Coronary artery spasm warrants consideration in unexplained exercise-related cardiac events.