Tıssue Doppler Myocardial Performance Index [Turk Kardiyol Dern Ars]
Turk Kardiyol Dern Ars. 2003; 31(5): 262-269

Tıssue Doppler Myocardial Performance Index

Tarkan Tekten1, Alper O.Onbaşılı1, Ceyhun Ceyhan1, Selim Ünal1, Pınar Ağaoğlu1

A simple, reproducible, noninvasive myocardial performance index (MPI) for the assessment of overall cardiac function has been described previously. The purpose of this study was to compare the MPI obtained by pulsed Doppler method with the MPI obtained by tissue Doppler echocardiography (TDE) in normal subjects. Twenty-eight healthy subjects were included. In order to calculate MPI by TDE, isovolumetric contraction (IVCT), relaxation time (IVRT) and ejection time (ET) were measured at two different sites of mitral annulus: septum and lateral. MPI was calculated by dividing the sum of IVCT and IVRT by ET at each site of measurement. The mean MPI value was found by dividing the sum of these MPI values into two. The same parameters were measured using the mitral inflow and left ventricular outflow velocity time intervals in pulsed Doppler method. At all sites measured, MPI by TDE correlated well with conventional MPI (at septal site r=0.82, p<0.0001; at lateral site r=0.86, p<0.0001). The highest correlation was observed in mean value of MPI by TDE; r=0.94, p<0.0001. This study demonstrated that MPI may be measured by TDE and correlated well with conventional MPI in normal subjects. The mean of MPI by TDE values measured at two different mitral annular sites may be a more reliable way of assessing global LV function.

Keywords: Cardiac functions, myocardial performance index, tissue Doppler echocardiography

How to cite this article
Tarkan Tekten, Alper O.Onbaşılı, Ceyhun Ceyhan, Selim Ünal, Pınar Ağaoğlu. Tıssue Doppler Myocardial Performance Index. Turk Kardiyol Dern Ars. 2003; 31(5): 262-269
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