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Published on: August 8, 2022
Restrictive cardiomyopathy--an outdated concept?
Carmen Ginghină1, Raluca Mihalache, B A Popescu
1Department of Cardiology, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania. carmenginghina2010@gmail.com
Summary
Restrictive cardiomyopathy (RCM) is rare and difficult to define, encompassing various heart conditions with distinct phenotypes. New classification systems focus on genotype-phenotype interactions for a better understanding of RCM.
Area of Science:
- Cardiology
- Genomics
- Pathology
Background:
- Restrictive cardiomyopathy (RCM) is the least common cardiomyopathy, presenting non-specifically with unknown causes.
- Historically, RCM has been challenging to define and classify due to overlapping patterns and definitional issues.
- Current understanding includes disorders with a non-hypertrophied, non-dilated cardiac phenotype and restrictive ventricular filling.
Purpose of the Study:
- To review the evolving concept of restrictive cardiomyopathy.
- To discuss the limitations of traditional RCM classification.
- To highlight the emerging framework for a new classification system based on genotype-phenotype interactions.
Main Methods:
- Literature review of restrictive cardiomyopathy.
- Analysis of historical and current definitions and classifications.
- Discussion of advances in pathology, genomics, and molecular biology.
Main Results:
- RCM definition has evolved to include a broader spectrum of disorders.
- Traditional classification attempts have been problematic.
- Genomics and molecular biology offer a new framework for classification.
Conclusions:
- RCM is characterized by a specific cardiac phenotype and filling pattern.
- A new classification system integrating genotype and phenotype is emerging.
- The practical utility of RCM as a distinct concept remains under discussion.
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