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Related Concept Videos

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...
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

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...
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

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...
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

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,...

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Updated: Jun 24, 2026

Rat Model of Right-Sided Cardiac Remodeling and Arrhythmia Using Pulmonary Artery Banding
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Arrhythmogenic right ventricular cardiomyopathy.

Cristina Basso1, Domenico Corrado, Frank I Marcus

  • 1University of Padua Medical School, Padua, Italy.

Lancet (London, England)
|April 14, 2009
PubMed
Summary

Arrhythmogenic cardiomyopathy is a genetic heart condition causing sudden death. Early detection through genetic screening and risk stratification is crucial for preventing adverse outcomes in affected families.

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Area of Science:

  • Cardiology
  • Genetics
  • Inherited Heart Diseases

Background:

  • Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a rare inherited heart-muscle disease.
  • It is a significant cause of sudden cardiac death in young individuals and athletes.
  • Genetic mutations in desmosomal proteins are implicated, classifying it as a genetically determined myocardial dystrophy.

Purpose of the Study:

  • To provide a comprehensive overview of arrhythmogenic cardiomyopathy.
  • To highlight diagnostic challenges and clinical targets for early detection and prevention.
  • To emphasize the role of genetic screening in family members.

Main Methods:

  • Review of current understanding of arrhythmogenic cardiomyopathy.
  • Description of diagnostic criteria including ventricular changes, ECG abnormalities, arrhythmias, and biopsy findings.
  • Discussion of genetic screening and risk stratification strategies.

Main Results:

  • Standardized diagnostic criteria exist but may lack sensitivity for early disease detection.
  • Left ventricular involvement is common, supporting the term arrhythmogenic cardiomyopathy.
  • Cascade genetic screening identifies asymptomatic carriers needing lifelong follow-up due to age-related penetrance.

Conclusions:

  • Arrhythmogenic cardiomyopathy is a genetically determined disease requiring early identification and management.
  • Preventive strategies include exercise restriction, medication, and device therapy.
  • Genetic screening is vital for identifying at-risk family members and enabling timely intervention.