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Left ventricular relaxation time index and left atrial emptying index as early echocardiographic indicators in
S I Drăgulescu1, C Streian, A L Velica
1Institute of Medicine, Department of Cardiology, Timişoara, Romania.
Insights
Left ventricular diastolic function, specifically left ventricular relaxation time index (LVRTI) and left atrial emptying index (LAEI), are the earliest indicators of hypertensive heart disease. These findings emerge even in early-stage mild essential hypertension.
Area of Science:
- Cardiology
- Hypertension Research
- Cardiac Physiology
Background:
- Hypertensive heart disease develops gradually.
- Early detection of cardiac changes is crucial for timely intervention.
- Mild essential hypertension can lead to structural and functional cardiac alterations.
Purpose of the Study:
- To identify the earliest structural and functional changes in the left ventricle due to hypertensive heart disease.
- To assess the utility of specific diastolic function indices in early hypertension detection.
- To differentiate cardiac responses to hypertension based on treatment efficacy.
Main Methods:
- Longitudinal study of subjects with newly detected elevated blood pressure.
- Categorization into healthy, mild essential hypertension, and treated/untreated hypertensive groups over seven years.
- Utilized arterial blood pressure measurement, clinical examination, chest X-ray, ECG, and M-mode echocardiography.
Main Results:
- Left ventricular diastolic function indices, including left ventricular relaxation time index (LVRTI) and left atrial emptying index (LAEI), were evaluated.
- These diastolic function parameters demonstrated sensitivity to early hypertensive heart disease.
- Differences in cardiac status were observed between correctly treated and inadequately treated hypertensive patients.
Conclusions:
- Left ventricular relaxation time index (LVRTI) and left atrial emptying index (LAEI) are the earliest indicators of hypertensive heart disease.
- These indices are valuable for detecting cardiac impact from mild essential hypertension.
- Early identification of diastolic dysfunction can guide hypertension management and prevent cardiac remodeling.
Abstract:
To study the earliest changes in left ventricular structure and function appearing in response to hypertensive heart disease the study was started with an initial group of subjects detected for the first time in their lives with elevated levels of systemic blood pressures. A careful follow up of these subjects during the next year allowed the division of these subjects into a group of healthy not hypertensive subjects and a group of subjects with mild essential systemic hypertension detected in an early phase. The next six years of repeated controls (arterial blood pressure measurement, clinical examination, routine chest X-ray pictures, standard 12 leads ECG and M-mode echocardiography) allowed a further division of the hypertensive subjects into two groups of patients: one correctly treated and the other treated incorrectly or not at all. It was found that left ventricular diastolic functions expressed by left ventricular relaxation time index (LVRTI) and left atrial emptying index (LAEI) are the earliest indicators of hypertensive heart disease due to mild essential systemic hypertension.