Arrhythmogenic right ventricular cardiomyopathy/dysplasia

Area of Science:

• Cardiology
• Genetics
• Pathology

Background:

• Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is a progressive cardiac disease primarily affecting the right ventricle.
• It is characterized by ventricular arrhythmias, potentially leading to sudden cardiac death.
• Genetic factors play a significant role, with autosomal dominant and recessive forms identified.

Purpose of the Study:

• To review the genetic basis, clinical manifestations, and therapeutic strategies for ARVC/D.
• To highlight the link between specific genetic mutations and disease mechanisms.
• To emphasize risk factors for fatal arrhythmias and sudden cardiac death in ARVC/D patients.

Main Methods:

• Review of existing literature on ARVC/D genetics, pathophysiology, and clinical management.
• Analysis of clinical signs, including ventricular arrhythmias and echocardiographic abnormalities.
• Discussion of therapeutic options such as antiarrhythmic drugs, ablation, and device implantation.

Main Results:

• ARVC/D is linked to genetic disorders, including desmosomal abnormalities and ryanodine receptor mutations.
• Ventricular arrhythmias originate from areas of slow conduction, with myocardial damage or calcium overload as key factors.
• Right ventricle (RV) dilatation and left ventricle (LV) abnormalities are significant risk factors for sudden cardiac death.

Conclusions:

• Understanding the genetic underpinnings of ARVC/D is essential for diagnosis and risk stratification.
• Management strategies should address arrhythmias, RV remodeling, and heart failure.
• Integrated therapeutic approaches, including pharmacotherapy, ablation, and device therapy, are vital for improving outcomes in ARVC/D.