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[Correlations between mitral annular and left atrial function as assessed by three-dimensional speckle-tracking
Péter Domsik1, Anita Kalapos1, Csaba Lengyel2
1Szegedi Tudományegyetem, Általános Orvostudományi Kar, Szent-Györgyi Albert Klinikai Központ II. Belgyógyászati Klinika és Kardiológiai Központ Szeged Korányi fasor 6. 6720.
Insights
This study found correlations between left atrial (LA) morphology and function and mitral annulus dynamics in healthy individuals. These findings highlight the interconnectedness of cardiac structures during the cardiac cycle.
Area of Science:
- Cardiology
- Echocardiography
- Cardiac Mechanics
Background:
- The left atrium (LA) is a dynamic heart chamber.
- It communicates with the left ventricle via the mitral valve and annulus.
Purpose of the Study:
- To investigate relationships between 3D speckle-tracking echocardiography (STE)-derived LA parameters and mitral annulus characteristics.
- To assess these relationships in healthy subjects.
Main Methods:
- 35 healthy volunteers underwent 3D STE.
- Measured left atrial volumes (Vmax, Vmin, VpreA) and calculated functional parameters.
- Assessed mitral annulus morphologic and functional characteristics.
Main Results:
- Maximum LA volume (Vmax) correlated with systolic and diastolic mitral annulus parameters.
- Minimum LA volume (Vmin) and pre-atrial contraction volume (VpreA) correlated only with systolic parameters.
- Total and passive LA stroke volumes showed varying correlations with mitral annulus parameters.
Conclusions:
- Significant correlations exist between left atrial and mitral annular morphology and function in healthy individuals.
- These findings underscore the interdependence of LA and mitral annulus dynamics.
Introduction:
Left atrium is a heart chamber with dinamic motion communicating with left ventricle through the mitral valve and its annulus.
Aim:
The aim of the present study was to analyse whether relationships could exist between three-dimensional speckle-tracking echocardiography-derived morphologic and functional parameters of the left atrium and mitral annulus in healthy subjects.
Method:
The present study comprised 35 healthy volunteers. Maximum (Vmax) and minimum (Vmin) left atrial volumes and left atrial volume before atrial contraction (VpreA) were measured, and several functional parameters based on these volumes were calculated in all cases. Morphologic and functional characteristics of the mitral annulus were also determined.
Results:
While Vmax showed correlations with both systolic and diastolic mitral annulus parameters, Vmin-VpreA correlated with only systolic ones. While total left atrial stroke volume correlated with both systolic and diastolic mitral annular parameters, passive left atrial stroke volume showed correlations only with diastolic ones.
Conclusions:
Correlations exist between left atrial and mitral annular morphological and functional characteristics in healthy subjects.