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[Echocardiography in obstructive hypertrophic myocardiopathy. Proposed index of severity of the obstruction]
Giornale Italiano Di Cardiologia
|January 1, 1978
Insights
A new obstruction index estimates left ventricle outflow gradients using echocardiograms in obstructive cardiomyopathies. This index correlates with clinical severity and catheterization findings.
Area of Science:
- Cardiology
- Medical Imaging
- Biomedical Engineering
Context:
- Obstructive cardiomyopathies present a significant clinical challenge, often requiring invasive hemodynamic assessment.
- Echocardiography is a non-invasive imaging modality widely used in cardiovascular diagnostics.
Purpose:
- To propose and validate a novel obstruction index derived from echocardiographic measurements.
- To estimate the left ventricle outflow gradient in patients with obstructive cardiomyopathies.
Summary:
- The proposed index utilizes measurements of septal-mitral valve leaflet distance, total narrowing time, and time of minimal/maximal narrowing from echocardiograms.
- Initial studies show a fair correlation between this index and the clinical severity of obstructive cardiomyopathies.
- The index also demonstrates a correlation with pressure gradients measured during cardiac catheterization.
Impact:
- Offers a non-invasive method for assessing left ventricle outflow obstruction severity.
- May aid in clinical decision-making and monitoring of patients with obstructive cardiomyopathies.
- Potential to reduce the need for invasive diagnostic procedures.
Abstract:
An obstruction index to estimate the left ventricle outflow gradient from the echocardiogram in patients with obstructive cardiomyopathies is proposed. It is based on the measurements of the mean distance between septum and anterior mtral valve leaflet, the total time of narrowing and the time of minimal and maximal narrowing. In the first group of patients studied, it seems to correlate fairely with the severity of clinical picture and with the gradient found at catheterization.