Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
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J Am Soc Echocardiogr · Dec 2005
Randomized Controlled Trial Comparative StudyLeft ventricle myocardial performance index derived either by conventional method or mitral annulus tissue-Doppler: a comparison study in healthy subjects and subjects with heart failure.
The aims of this study were to investigate the clinical agreement between myocardial performance index (MPI) measured conventionally and by pulsed-wave tissue Doppler (PW-TD) of the mitral annulus, and to test whether PW-TD MPI can accurately differentiate between healthy subjects and patients affected by congestive heart failure (CHF) with mild to moderate reduction of systolic function. ⋯ We performed a study in healthy adults and in patients with congestive heart failure to investigate the clinical agreement between MPI measured conventionally and by PW-TD of the mitral annulus. We found mild agreement between MPI measured by the conventional method and by PW-TD. Both methods had high diagnostic accuracy for CHF. PW-TD method requires a higher MPI cut-point for best diagnostic accuracy.