Related Experiment Video
Updated: Jun 30, 2026

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
[Hypertrophic cardiomyopathy: course characteristics in long-term follow-up]
Insights
Diastolic dysfunction significantly impacts hypertrophic cardiomyopathy (HCMP) symptoms and disease progression. The atrial-ventricular index (AVI) can indicate HCMP severity, with higher values linked to worse outcomes.
Area of Science:
- Cardiology
- Internal Medicine
- Biomedical Engineering
Background:
- Hypertrophic cardiomyopathy (HCMP) is a complex genetic heart disease.
- Understanding intracardiac hemodynamics is crucial for managing HCMP.
- This study investigates the relationship between hemodynamic parameters and clinical presentation in HCMP patients.
Discussion:
- Diastolic dysfunction plays a key role in the development of HCMP symptoms.
- Cardiac remodeling parameters, particularly the atrial-ventricular index (AVI), correlate with disease severity.
- Early symptoms include asthenia, cardialgia, and dyspnea, often progressing to heart failure.
Key Insights:
- The atrial-ventricular index (AVI) is a significant indicator of HCMP severity.
- Patients with severe HCMP exhibit an AVI equal to or greater than 1.1.
- Hemodynamic changes, specifically diastolic dysfunction, are central to HCMP's clinical manifestations.
Outlook:
- Further research into diastolic dysfunction mechanisms in HCMP is warranted.
- Developing targeted therapies for diastolic dysfunction could improve HCMP patient outcomes.
- Long-term follow-up studies are essential for refining prognostic markers in HCMP.
Aim:
To detect relations between intracardiac hemodynamics and clinicoanamnestic features of patients with hypertrophic cardiomyopathy (HCMP).
Material And Methods:
We observed 84 patients with different clinical variants of a HCMP course. Of them, 15 patients were treated surgically. The patients were followed up from 3 to 24 years (mean 8.4 +/- 1.1 years). All the patients have undergone standard ECG, transthoracic echocardiography with doppler echocardiography, 24-h ECG monitoring, part of them--stress echocardiography (exercise and/or dobutamine), MRT of the heart, coronaroangiography and probing of the heart.
Results:
The analysis of cardiac remodeling parameters in HCMP patients showed significance of diastolic disorders in development of basic clinical symptoms of the disease. A rise of atrial-ventricular index (AVI) reflects severity of a HCMP course. Patients with the most severe course of the disease had AVI equal or higher than 1.1. In obstructive and non-obstructive variants of HCMP time of the first symptoms onset did not differ significantly. In the disease onset the patients had asthenic syndrome, cardialgia, dyspnea. The disease ends with heart failure.
Conclusion:
Long-term follow-up of HCMP patients and comparison of clinico-morphological parameters revealed the role of diastolic dysfunction in formation of clinical symptoms.
Related Concept Videos
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Cardiomyopathy V: Interprofessional Care
Cardiomyopathy II: Dilated Cardiomyopathy
Cardiomyopathy I: Introduction and Classification
Myocarditis IV: Nursing Management
Cardiomyopathy IV: Restrictive Cardiomyopathy

