Related Experiment Videos
Diastolic changes in left ventricular wall thickness studied by echocardiography.
Archives Des Maladies Du Coeur Et Des Vaisseaux
|March 1, 1978
Summary
Ventricular wall thinning during diastole is normally linked to rapid filling. However, in heart disease, this thinning can occur before filling or be altered by myocardial conditions.
Area of Science:
- Cardiology
- Cardiac Physiology
- Echocardiography
Background:
- Diastolic function is crucial for cardiac health.
- Understanding ventricular wall dynamics during diastole is key to diagnosing heart conditions.
Purpose of the Study:
- To investigate factors affecting posterior wall thickness changes during diastole.
- To analyze the relationship between ventricular wall thinning and rapid filling in normal subjects and patients with heart disease.
Main Methods:
- Digitization of echocardiograms from 15 normal subjects and 49 patients with heart disease.
- Analysis of posterior wall endocardium and epicardium, septum, and mitral valve dynamics.
- Measurement of maximum wall thickness, minimum cavity dimension, and mitral valve opening timing.
Main Results:
- Rapid ventricular wall thinning normally synchronizes with rapid filling.
- In ischemic heart disease, thinning preceded mitral valve opening.
- Hypertrophic cardiomyopathy showed varied thinning rates, correlating with dimension changes.
- Mitral stenosis often presented reduced thinning rates, with compensatory septal movement.
Conclusions:
- Ventricular wall thinning is an intrinsic property, typically coupled with rapid filling.
- Dissociation of thinning from filling can occur due to asynchronous relaxation or inflow obstruction.
- Myocardial disease can significantly modify the rate and pattern of ventricular wall thinning.