Effects of Myocardial Infarction on Left Ventricular Systolic and Diastolic Function with the Use of Mistral Annular Velocity Determined by Doppler Tissue Imaging

Objective To assess the effect of myocardial infraction(MI) on the systolic and diastolic velocity profiles of the mistral annulus determined by Doppler tissue imaging. Methods Thirty eight patients with MI and 20 age matched healthy subjects were examined. Peak systolic, peak early diastolic, and peak late diastolic velocities were recorded at 4 different sites on the mitral annulus corresponding to the septum, anterior, lateral and inferior sites of the left ventricle respectively. Results The reduced peak systolic mitral annular velocity seemed to be an expression of regionally reduced systolic function. The peak early diastolic velocity was also reduced, especially at the infarction sites, and reflected regional diastolic function. Conclusion The quantification of the myocardial velocity determined by Doppler tissue imaging opens up a new way of assessing LV systolic and diastolic function in patients with MI.