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Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

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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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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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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 III: Clinical Manifestations01:30

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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 (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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Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
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Spontaneous coronary artery dissection.

Fernando Alfonso1, Teresa Bastante, Fernando Rivero

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Summary

Spontaneous coronary artery dissection (SCAD) is a rare condition. New research highlights advanced imaging, links to fibromuscular dysplasia, and favors conservative medical management over revascularization for SCAD patients.

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Area of Science:

  • Cardiology
  • Vascular Medicine

Background:

  • Spontaneous coronary artery dissection (SCAD) is a rare condition with unclear causes.
  • Historically thought to affect young women without risk factors, SCAD now shows a broader patient profile.
  • Understanding SCAD pathophysiology is evolving from case studies to larger registry data.

Purpose of the Study:

  • To review current knowledge on SCAD, focusing on diagnostic techniques, associated conditions, and management strategies.
  • To highlight the role of intracoronary imaging in diagnosing SCAD.
  • To discuss the link between fibromuscular dysplasia and SCAD, and optimal treatment approaches.

Main Methods:

  • Review of recent large registries and case-series studies on SCAD.
  • Analysis of intracoronary diagnostic techniques: intravascular ultrasound (IVUS) and optical coherence tomography (OCT).
  • Evaluation of clinical evidence linking fibromuscular dysplasia (FMD) and SCAD.

Main Results:

  • Intracoronary imaging (IVUS, OCT) enhances SCAD diagnosis beyond angiography, revealing intimal tears and intramural hematomas.
  • Growing evidence supports a strong association and potential causal link between fibromuscular dysplasia and SCAD.
  • Conservative medical management appears more favorable than revascularization for most SCAD cases due to adverse anatomy.

Conclusions:

  • SCAD presents a complex clinical picture, necessitating advanced diagnostic tools.
  • Fibromuscular dysplasia is an increasingly recognized comorbidity associated with SCAD.
  • Initial conservative management is often the preferred strategy for SCAD, with revascularization reserved for specific indications.