The abstract is read at the publisher; the summary is JClub's.
In MYH7-related non-obstructive hypertrophic cardiomyopathy progression, diastolic dysfunction emerges before overt hypertrophy and worsens as septal hypertrophy, myocardial stiffening, and ionic remodeling are added.
- Why it matters: Clinically, it remains hard to determine how sarcomeric, electrophysiologic, structural, and mechanical changes jointly affect ventricular filling during disease progression.
- What they did: A human biventricular electromechanical in silico model linked electrophysiology and calcium handling to contraction, mechanics, hemodynamics, ECG, and myocardial strain across Stage I–III, with secondary ionic remodeling assessed at each stage.
- The result: Sarcomeric dysfunction alone produced a low-volume hypercontractile phenotype; septal hypertrophy constrained filling, while stiffening and ionic remodeling impaired relaxation and reduced filling despite preserved ejection fraction, with worsening deformation and regional mechanical heterogeneity.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.