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Related Concept Videos

Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

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Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
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Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

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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...
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Heart Valves01:16

Heart Valves

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The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
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Viral Mutations00:36

Viral Mutations

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A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
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Mitral Regurgitation II: Clinical features and Diagnostic Tests01:23

Mitral Regurgitation II: Clinical features and Diagnostic Tests

Mitral regurgitation (MR) is a valvular heart disorder in which the mitral valve fails to close tightly, allowing blood to leak backward into the heart. Understanding the clinical manifestations, assessment, diagnostic findings, and medical management of MR is crucial to effectively managing affected patients.Clinical Manifestations of Mitral RegurgitationMitral regurgitation can be acute or chronic, each presenting differently and requiring different approaches:1. Acute Mitral...
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...

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Related Experiment Video

Updated: Jun 4, 2025

Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse
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Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse

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Viral Myocarditis.

Cai Ying1,2

  • 1Department of Pulmonary and Critical Care Medicine, Yale University, New Haven, CT, USA.

The Yale Journal of Biology and Medicine
|December 20, 2024
PubMed
Summary
This summary is machine-generated.

Viral myocarditis can lead to heart failure and dilated cardiomyopathy (DCM). This review explores the mechanisms and treatment of viral myocarditis, a significant cardiac condition.

Keywords:
influenza viruslung infectionviral myocarditis

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Area of Science:

  • Cardiology
  • Virology
  • Pathophysiology

Background:

  • Viral infections are a significant cause of myocarditis.
  • Myocarditis can progress to severe cardiac conditions like dilated cardiomyopathy (DCM), left ventricular dysfunction, and heart failure.

Purpose of the Study:

  • To review the underlying mechanisms of viral myocarditis.
  • To discuss current and emerging treatment strategies for viral myocarditis.

Main Methods:

  • Literature review of existing studies on viral myocarditis.
  • Synthesis of information on viral pathogenesis and cardiac remodeling.
  • Analysis of therapeutic interventions for viral myocarditis.

Main Results:

  • Viral infections trigger inflammatory responses in the myocardium.
  • Inflammation and direct viral injury contribute to myocardial damage.
  • Delayed immune responses and fibrosis can lead to chronic cardiac dysfunction.

Conclusions:

  • Understanding viral myocarditis mechanisms is crucial for effective treatment.
  • Targeting viral replication and modulating the immune response are key therapeutic goals.
  • Further research is needed to develop targeted therapies for preventing DCM and heart failure post-myocarditis.