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Arrhythmogenic Cardiomyopathy: Current Updates and Future Challenges
Zafraan Zathar1, Nihit Shah2, Nimai Desai3
1Department of Cardiology, Worcestershire Acute Hospitals NHS Trust, WR5 1DD Worcester, UK.
Insights
Arrhythmogenic cardiomyopathy (ACM) is a genetic heart condition involving fibro-fatty changes. This review clarifies ACM
Area of Science:
- Cardiology
- Genetics
- Medical Diagnostics
Background:
- Arrhythmogenic cardiomyopathy (ACM) is a genetic disorder characterized by fibro-fatty replacement of cardiac myocytes.
- While historically considered right ventricular-dominant, ACM increasingly presents with biventricular or left-dominant involvement.
- Distinguishing ACM from other cardiomyopathies is challenging due to overlapping clinical and imaging features.
Purpose of the Study:
- To review the genetic basis of ACM.
- To delineate the clinical and imaging manifestations of ACM.
- To provide an analytical perspective on current diagnostic criteria for ACM.
Main Methods:
- Synthesis of existing literature on ACM genetics, clinical presentation, and diagnostic criteria.
- Analysis of the evolution and application of diagnostic criteria, including the 2010 task force guidelines.
- Focus on integrating electrophysiological, imaging, genetic, and histological data for diagnosis.
Main Results:
- ACM has a complex genetic etiology.
- Phenotypic presentations of ACM are diverse, extending beyond the right ventricle.
- Current diagnostic criteria require a comprehensive, multi-modality approach.
Conclusions:
- Accurate diagnosis of ACM is crucial for timely intervention and cascade screening.
- Understanding the genetic underpinnings and diverse phenotypes is key to refining diagnostic strategies.
- This review aims to provide a framework for evidence-based ACM diagnosis and patient management.
Abstract:
Arrhythmogenic cardiomyopathy (ACM) epitomises a genetic anomaly hallmarked by a relentless fibro-fatty transmogrification of cardiac myocytes. Initially typified as a right ventricular-centric disease, contemporary observations elucidate a frequent occurrence of biventricular and left-dominant presentations. The diagnostic labyrinth of ACM emerges from its clinical and imaging properties, often indistinguishable from other cardiomyopathies. Precision in diagnosis, however, is paramount and unlocks the potential for early therapeutic interventions and vital cascade screening for at-risk individuals. Adherence to the criteria established by the 2010 task force remains the cornerstone of ACM diagnosis, demanding a multifaceted assessment incorporating electrophysiological, imaging, genetic, and histological data. Reflecting the evolution of our understanding, these criteria have undergone several revisions to encapsulate the expanding spectrum of ACM phenotypes. This review seeks to crystallise the genetic foundation of ACM, delineate its clinical and radiographic manifestations, and offer an analytical perspective on the current diagnostic criteria. By synthesising these elements, we aim to furnish practitioners with a strategic, evidence-based algorithm to accurately diagnose ACM, thereby optimising patient management and mitigating the intricate challenges of this multifaceted disorder.
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