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Tricuspid annulus motion and mitral annulus motion: Anatomical intimacy causing a good correlation?
K Emilsson1, R Egerlid, Bm Nygren
1Department of Clinical Physiology, Karlskoga Hospital;
Experimental and Clinical Cardiology
|July 31, 2009
Summary
Echocardiography reveals a weak correlation between tricuspid annulus motion (TAM) and mitral annulus motion (MAM) in patients, with no correlation in healthy subjects. This suggests anatomical proximity doesn't guarantee synchronized systolic function measurement.
Area of Science:
- Cardiology
- Echocardiography
- Cardiac Physiology
Background:
- Echocardiography is crucial for assessing heart function, particularly left ventricular systolic function.
- Mitral annulus motion (MAM) and tricuspid annulus motion (TAM) are key echocardiographic measures of systolic function for the left and right ventricles, respectively.
Purpose of the Study:
- To investigate the correlation between the amplitudes of TAM and MAM.
- To determine if the close anatomical proximity of the mitral and tricuspid annuli leads to a predictable relationship in their systolic motion.
Main Methods:
- Echocardiographic assessment of 19 healthy subjects and 103 consecutive patients.
- Measurement of the amplitudes of TAM and MAM.
- Calculation of the correlation between TAM and MAM amplitudes.
Main Results:
- A significant but weak positive correlation (r=0.58, P<0.001) was observed between TAM and MAM amplitudes in the patient group.
- No significant correlation was found between TAM and MAM amplitudes in healthy subjects.
Conclusions:
- Despite their anatomical proximity, TAM and MAM show a weak correlation in patients and no correlation in healthy individuals.
- Differences in anatomical and physiological characteristics between the right and left ventricles may explain the observed lack of strong correlation.
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