The relationship between mitral annular systolic velocity and ejection fraction in patients with preserved global systolic function of the left ventricle.

Background: The aim of the study was to investigate the relationship between the ejection fraction (EF) and the mitral annular systolic velocity (Sm) in patients with preserved left ventricular systolic function (EF>55%). The study task was to evaluate whether the assessment of Sm(avg) can be used as an alternative to the Simpson's method in assessment of the EF. The expected benefit was that Sm could be used to predict EF, when EF is difficult to assess due to poor image quality (IQ).

Mitral annular systolic velocity as a marker of preclinical systolic dysfunction among patients with arterial hypertension.

Background: The aim of this study was to investigate early changes in left ventricular longitudinal systolic function in patients with hypertension (HTN) with and without concomitant diastolic dysfunction (DD) and the clinical implications of these findings.

Method: We enrolled 299 patients with HTN and 297 age-matched patients with HTN and DD and compared both groups with an age-matched control group consisting of 100 healthy subjects. The long axis systolic function was investigated by determining the average peak systolic velocity of the septal and lateral mitral sites (Sm avg) using spectral pulsed wave tissue Doppler imaging (TDI).