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Related Concept Videos

Coronary Artery Disease II: Pathophysiology01:26

Coronary Artery Disease II: Pathophysiology

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...
Diabetic Retinopathy01:27

Diabetic Retinopathy

DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...

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Updated: May 16, 2026

Intradermal Microdialysis: An Approach to Investigating Novel Mechanisms of Microvascular Dysfunction in Humans
08:21

Intradermal Microdialysis: An Approach to Investigating Novel Mechanisms of Microvascular Dysfunction in Humans

Published on: July 21, 2023

Microvascular function/dysfunction downstream a coronary stenosis.

Giacinta Guarini1, Paola Giuseppina Capozza, Alda Huqi

  • 1Cardiovascular Medicine Division, Cardio Thoracic and Vascular Department, University of Pisa, Via Paradisa 2, 56124 Pisa, Italy.

Current Pharmaceutical Design
|November 24, 2012
PubMed
Summary
This summary is machine-generated.

Coronary microcirculation plays a key role in cardiovascular disease, influencing blood flow beyond epicardial stenosis. Understanding microvascular regulation is crucial for diagnosing and treating heart conditions effectively.

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Non-invasive Assessment of Microvascular and Endothelial Function
05:41

Non-invasive Assessment of Microvascular and Endothelial Function

Published on: January 29, 2013

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Last Updated: May 16, 2026

Intradermal Microdialysis: An Approach to Investigating Novel Mechanisms of Microvascular Dysfunction in Humans
08:21

Intradermal Microdialysis: An Approach to Investigating Novel Mechanisms of Microvascular Dysfunction in Humans

Published on: July 21, 2023

Non-invasive Assessment of Microvascular and Endothelial Function
05:41

Non-invasive Assessment of Microvascular and Endothelial Function

Published on: January 29, 2013

Area of Science:

  • Cardiovascular Physiology
  • Medical Research
  • Heart Disease Pathophysiology

Background:

  • Coronary heart disease traditionally focused on epicardial stenosis.
  • Emerging evidence highlights the significant role of coronary microcirculation in cardiovascular disease.
  • Microvascular regulatory mechanisms are complex, species-specific, and affected by comorbidities.

Purpose of the Study:

  • To review the mechanisms regulating coronary microcirculation and its role in cardiovascular disease.
  • To explore how epicardial stenosis actively influences coronary microcirculation.
  • To discuss the impact of myocardial performance on coronary blood flow and resistance.

Main Methods:

  • Literature review of studies on coronary microcirculation and stenosis.
  • Analysis of regulatory mechanisms of coronary blood flow.
  • Discussion of transient and chronic effects of stenosis on microcirculation.

Main Results:

  • Coronary stenosis impacts myocardial blood supply not only passively but also through active microcirculatory responses.
  • Microcirculatory remodeling due to chronic stenosis can impair blood supply even after revascularization.
  • Interactions between stenosis and microcirculation are complex and hierarchically regulated.

Conclusions:

  • A comprehensive understanding of coronary microcirculation is vital for understanding cardiovascular disease.
  • Microcirculatory dysfunction contributes to myocardial ischemia and may explain outcomes after revascularization.
  • Further research into microvascular regulation is needed for improved patient assessment and treatment.