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Related Concept Videos

Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

124
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...
124
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

113
Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
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Amyloid Fibrils03:03

Amyloid Fibrils

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Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

94
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
94
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

77
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
77
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

69
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...
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Related Experiment Video

Updated: Oct 18, 2025

Isolation and Characterization of Cardiac Mesenchymal Stromal Cells from Endomyocardial Bioptic Samples of Arrhythmogenic Cardiomyopathy Patients
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Misconceptions and Facts About Cardiac Amyloidosis.

Felix D Nguyen1, Mario Rodriguez2, Chayakrit Krittanawong3

  • 1Department of Medicine.

The American Journal of Cardiology
|October 6, 2021
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Summary

Cardiac amyloidosis, a condition causing heart disease, is often diagnosed late. Early recognition and timely treatment are crucial for improving patient outcomes.

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Last Updated: Oct 18, 2025

Isolation and Characterization of Cardiac Mesenchymal Stromal Cells from Endomyocardial Bioptic Samples of Arrhythmogenic Cardiomyopathy Patients
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Area of Science:

  • Cardiology
  • Internal Medicine
  • Medical Diagnostics

Background:

  • Cardiac amyloidosis significantly increases morbidity and mortality.
  • Delayed diagnosis is common due to insufficient recognition of early signs and symptoms.

Purpose of the Study:

  • To clarify misconceptions surrounding cardiac amyloidosis.
  • To provide primary care providers with a framework for earlier disease identification.

Main Methods:

  • Review of patient symptoms, electrocardiogram, and imaging studies (echocardiography, MRI).
  • Measurement of serum and urine light chains.
  • Bone scintigraphy for differentiating amyloidosis subtypes.

Main Results:

  • Diagnostic workup involves a multi-faceted approach combining clinical, imaging, and laboratory tests.
  • Distinguishing between transthyretin amyloidosis and light-chain cardiac amyloidosis is essential for targeted therapy.

Conclusions:

  • Timely diagnosis of cardiac amyloidosis is critical for initiating effective treatments.
  • Improved diagnostic strategies can enhance patient outcomes and reduce disease burden.