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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

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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 (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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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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Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
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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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Obesity Related Coronary Microvascular Dysfunction: From Basic to Clinical Practice.

K Selthofer-Relatić1, I Bošnjak2, A Kibel3

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Obesity causes coronary microvascular disease through chronic inflammation, affecting blood vessel function and potentially leading to heart problems. Understanding these mechanisms is crucial for diagnosis and treatment.

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Area of Science:

  • Cardiology
  • Metabolic Syndrome
  • Vascular Biology

Background:

  • Obesity-related coronary microvascular disease is not fully understood.
  • Coronary microcirculatory dysfunction involves diverse disorders affecting morphology, function, and prognosis.
  • Mechanisms include vascular, extravascular, and vasostructural changes influenced by neural, mechanical, and metabolic factors.

Purpose of the Study:

  • To elucidate the pathophysiological basis of obesity-related coronary microvascular disease.
  • To explore the mechanisms linking cardiometabolic changes to coronary microvascular dysfunction.
  • To understand the clinical presentation and diagnostic challenges.

Main Methods:

  • Review of pathophysiological mechanisms in obesity-related coronary microvascular disease.
  • Analysis of factors contributing to endothelial and smooth muscle dysfunction.
  • Examination of neurohormonal and inflammatory pathways involved.

Main Results:

  • Obesity-induced inflammation, mediated by adipokines/cytokines, reduces nitric oxide-mediated dilation.
  • Endothelial and smooth muscle-dependent vasoregulation is altered.
  • Sympathetic activity increases, and obesity-related hypertension contributes to cardiac changes.

Conclusions:

  • Obesity significantly impacts coronary microcirculation through inflammation and altered vascular control.
  • Cardiometabolic risk factors contribute to coronary artery disease and microvascular dysfunction.
  • Clinical presentation varies, posing diagnostic and therapeutic challenges.