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Related Concept Videos

Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

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.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and narrowing...
Acute Coronary Syndrome IV: Interprofessional Care01:28

Acute Coronary Syndrome IV: Interprofessional Care

IntroductionThe management of Acute Coronary Syndrome (ACS) aims to minimize myocardial damage, preserve myocardial function, and prevent complications.Initial ManagementInpatient management involves continuous cardiac monitoring, preferably in an ICU, focusing on blood pressure, serum sodium, potassium, and creatinine levels, and urine output. Ongoing pharmacologic management is crucial for stabilizing the patient.Supplemental Oxygen: Administer supplemental oxygen if oxygen saturation is...
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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...
Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

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...
Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...

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Related Experiment Video

Updated: Jun 28, 2026

Model of Ischemia and Reperfusion Injury in Rabbits
06:11

Model of Ischemia and Reperfusion Injury in Rabbits

Published on: November 3, 2023

Myocardial ischemia: current concepts and future perspectives.

Hiroaki Shimokawa1, Satoshi Yasuda

  • 1Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan. shimo@cardio.med.tohoku.ac.jp

Journal of Cardiology
|October 17, 2008
PubMed
Summary

Ischemic heart disease, a global epidemic, stems from oxygen supply-demand imbalance. Targeting endothelial dysfunction and Rho-kinase pathway offers new therapeutic strategies for this leading cause of death.

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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

Related Experiment Videos

Last Updated: Jun 28, 2026

Model of Ischemia and Reperfusion Injury in Rabbits
06:11

Model of Ischemia and Reperfusion Injury in Rabbits

Published on: November 3, 2023

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

Area of Science:

  • Cardiovascular Science
  • Vascular Biology
  • Pathophysiology

Background:

  • Ischemic heart disease is a leading global cause of death, characterized by myocardial ischemia due to oxygen supply-demand imbalance.
  • Clinical manifestations arise from coronary blood flow obstruction, including plaques, thrombosis, and vasospasm, with gender differences influenced by estrogen.
  • Endothelial dysfunction and Rho-kinase pathway activation are implicated in cardiovascular diseases, highlighting them as potential therapeutic targets.

Purpose of the Study:

  • To explore the mechanisms underlying myocardial ischemia and its clinical manifestations.
  • To investigate the role of endothelial regulation and the Rho-kinase pathway in cardiovascular disease pathogenesis.
  • To identify potential therapeutic targets for ischemic heart disease.

Main Methods:

  • Review of existing literature on ischemic heart disease, coronary circulation, and endothelial function.
  • Analysis of the pathophysiology of myocardial ischemia, including factors like coronary plaques, thrombosis, and vasospasm.
  • Examination of the involvement of the Rho-kinase pathway and endothelial dysfunction in cardiovascular disease.

Main Results:

  • Myocardial ischemia results from an imbalance between oxygen supply and demand, leading to cardiac dysfunction and potentially sudden death.
  • Coronary blood flow obstruction and impaired endothelial-mediated vasodilation contribute to ischemic manifestations.
  • The Rho-kinase pathway plays a role in endothelial dysfunction and vascular smooth muscle hypercontraction.

Conclusions:

  • Endothelial dysfunction is a key factor in cardiovascular diseases and a significant therapeutic target.
  • Activation of the Rho-kinase pathway is implicated in both endothelial dysfunction and vascular hypercontraction.
  • Targeting the Rho-kinase pathway presents a promising therapeutic strategy for managing ischemic heart disease.