MethodDifferences of Lateral and Septal Mitral Annulus Velocity by Tissue Doppler Imaging in the Evaluation of Left Ventricular Diastolic Function
Section snippets
Methods and Results
We analyzed 2-dimensional and Doppler echocardiograms from 276 outpatients (151 men, 125 women; mean age 56 years) at a university private practice in a 6-month period. Complete transthoracic echocardiograms and Doppler studies were performed on all patients for clinical indications by 1 of 3 experienced sonographers using Hewlett-Packard Sonos 5500 ultrasound machines (Philips Medical Systems, Andover, Massachusetts).
The left atrial dimension was measured at ventricular end-systole in the
Discussion
TDI is a reproducible and feasible means of assessing LV mitral annular velocities. There is no general consensus as to which mitral annular velocity (septal, lateral, or the mean of septal and lateral) is more accurate for assessing LVDD.
The present study showed that the severity of LVDD using the septal, lateral, and mean mitral annular velocities correlated well with left atrial dimensions. As the degree of LVDD became more severe, left atrial size and volume increased. There was no
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