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Related Concept Videos

Angina I: Introduction01:30

Angina I: Introduction

Definition and Symptoms: Angina (angina pectoris) is chest pain or discomfort caused by myocardial ischemia, which occurs when the heart muscle receives insufficient oxygen-rich blood. It typically manifests as pressing, squeezing, or crushing sensations in the chest and may radiate to the shoulders, arms, neck, jaw, or back.Primary Cause: In a healthy state, the coronary arteries can dilate (widen) to increase blood flow and meet the increased oxygen demand during physical activity or...
Angina II: Classification01:27

Angina II: Classification

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...
Angina III: Clinical Manifestations and Assessment01:29

Angina III: Clinical Manifestations and Assessment

Angina manifests as chest pain, tightness, or squeezing discomfort typically located behind the breastbone. It can radiate to the neck, jaw, shoulders, and inner aspects of the upper arms, most commonly the left arm. Patients may experience shortness of breath, fatigue, profuse sweating, dizziness, indigestion, heartburn, palpitations, anxiety, and vomiting as accompanying symptoms. This pain often lasts a few minutes and is triggered by physical exertion, emotional stress, heavy meals, or cold...
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

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...
Angina V: Nursing Management01:20

Angina V: Nursing Management

Angina, a symptom of myocardial ischemia, requires a structured nursing management approach to ensure effective care and prevent complications like myocardial infarction. Comprehensive nursing care involves assessing, diagnosing, planning, implementing interventions, and evaluating outcomes, all tailored to the individual patient's needs.Patient AssessmentNursing assessment begins with a detailed subjective evaluation of symptoms, which typically include chest pain or pressure radiating to the...
Angina IV: Management01:26

Angina IV: Management

IntroductionThe management of angina requires a comprehensive approach that includes pharmacological therapies, medical procedures, and lifestyle modifications.Pharmacological TherapiesAntiplatelet agents, such as aspirin, clopidogrel, prasugrel, and ticagrelor, play a pivotal role in preventing thrombus formation in patients with angina. These medications inhibit platelet aggregation and reduce the likelihood of myocardial infarction and other cardiovascular events.Anticoagulants, including...

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Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders
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Insight to the pathophysiology of stable angina pectoris.

Dimitris Tousoulis1, Emmanuel Androulakis, Anna Kontogeorgou

  • 11st Cardiology Department, Hippokration Hospital, Athens University Medical School, Greece. drtousoulis@hotmail.com

Current Pharmaceutical Design
|September 29, 2012
PubMed
Summary

Chronic stable angina, a common emergency room presentation, stems from myocardial ischemia due to atherosclerosis. Understanding its complex pathophysiology, including endothelial dysfunction and microvascular issues, remains crucial for effective treatment.

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Area of Science:

  • Cardiology
  • Vascular Biology
  • Pathophysiology

Background:

  • Atherosclerosis is a chronic inflammatory vascular disease.
  • Myocardial ischemia, causing angina pectoris, results from oxygen supply-demand imbalance.
  • Chronic stable angina is a frequent emergency room complaint linked to myocardial ischemia without necrosis.

Purpose of the Study:

  • To explore the pathophysiology of chronic coronary syndrome.
  • To highlight the role of endothelial dysfunction and microvascular coronary dysfunction in anginal chest pain.
  • To investigate the impact of atherosclerotic plaques and vascular remodeling on coronary flow and symptoms.

Main Methods:

  • Review of current data on atherosclerosis and myocardial ischemia.
  • Analysis of the role of endothelial dysfunction in early atherogenesis.
  • Examination of microvascular coronary dysfunction in non-obstructive coronary artery disease.
  • Investigation of the effects of atherosclerotic plaques and vascular remodeling on coronary flow.

Main Results:

  • Endothelial dysfunction is an early event in atherosclerosis.
  • Microvascular coronary dysfunction is implicated in anginal chest pain without obstructive coronary artery disease.
  • Atherosclerotic plaques and multivessel obstructions affect coronary flow.
  • Vascular remodeling contributes to stable angina and claudication.

Conclusions:

  • The pathophysiology of chronic coronary syndrome involves complex interactions.
  • Endothelial and microvascular dysfunction are key contributors to angina.
  • Further research is needed to fully elucidate the mechanisms of chronic coronary syndrome.