Arrhythmogenic right ventricular cardiomyopathy a still underrecognized clinic entity

Area of Science:

• Cardiology
• Genetics
• Pathology

Background:

• Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a newly identified condition linked to sudden cardiac death in young individuals and athletes.
• Characterized by myocardial atrophy and fibro-fatty infiltration, primarily in the right ventricle, leading to ventricular electrical instability.
• Identified as a leading cause of sudden death in the Veneto Region, Italy, with a prevalence estimated over 1 in 5000.

Purpose of the Study:

• To describe the characteristics, diagnosis, and natural history of arrhythmogenic right ventricular cardiomyopathy.
• To investigate the genetic basis and prevalence of ARVC.
• To outline diagnostic criteria and disease progression.

Main Methods:

• Genetic linkage analysis to map ARVC-associated genes.
• Clinical diagnosis utilizing electrocardiography, echocardiography, angiocardiography, MRI, and endomyocardial biopsy.
• Review of natural history and disease phases.

Main Results:

• Genetic heterogeneity identified, with genes mapped to chromosomes 14q23-q24 and 1q42-q43.
• Diagnostic criteria established by the International Society and Federation of Cardiology.
• Disease progression identified through covert, overt arrhythmic, and congestive heart failure phases.

Conclusions:

• ARVC is a significant cause of sudden death with a genetic component.
• Early diagnosis and understanding of disease phases are crucial for management.
• Etiology and pathogenesis, including the role of apoptosis, require further investigation.