Non-compact cardiomyopathy or ventricular non-compact syndrome?

Area of Science:

• Cardiology
• Genetics
• Molecular Biology

Background:

• Ventricular myocardial non-compaction is a recognized genetic cardiomyopathy.
• Challenges exist in its nomenclature, pathogenesis, and classification due to overlapping phenotypes with other cardiomyopathies.
• Clinical manifestations include heart failure, arrhythmia, and thromboembolism.

Purpose of the Study:

• To review current findings on the etiology, epidemiology, histopathology, and echocardiography of ventricular myocardial non-compaction.
• To propose a new conceptual framework: "ventricular non-compaction syndrome."
• To facilitate better risk stratification and personalized therapy.

Main Methods:

• Comprehensive literature review of genetic cardiomyopathies, focusing on ventricular non-compaction.
• Analysis of histopathological, electromechanical, and clinical data.
• Synthesis of findings to support a new syndrome concept.

Main Results:

• Ventricular non-compaction exhibits genetic heterogeneity and phenotypical overlap.
• Disease presentation varies in histopathology, electromechanical function, and clinical course.
• Current understanding necessitates a re-evaluation of classification and nomenclature.

Conclusions:

• The variability suggests cardiomyopathies may stem from myocardial development variations due to gene mutations.
• A new concept of "ventricular non-compaction syndrome" is proposed.
• This framework aims to improve understanding of the disorder's development and guide personalized treatment.