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Abstract
Background:
Heart failure is a condition of high morbidity
and mortality and its incidence is increasing
with the aging of the population. Echocardiography
parameters have been shown to correlate
well with left ventricular (LV) systolic
function.
Aim: This
study sought the correlation between systolic
myocardial velocity (Sm) obtained by Tissue
Doppler imaging (TDI) and left ventricular
ejection fraction (LVEF) measured by conventional
Simpson’s method in patients with
heart failure.
Method:
This study involved 85 patients with heart
failure whose LVEF < 50% (mean age
58 (11) years), with LV EF measured by
conventional Simpson’s method correlating
with average Sm measured at septal, lateral,
anterior and inferior side of mitral annulus
by tissue Doppler echocardiography.
Results:
The mean age of the 85 patients in the
study was 58.48 (11) years, with 11 (12.9
%) female; 74 (87.1%) male. The mean LVEF
was 33.53 (9.94). A significant correlation
was detected between systolic mitral annulus
velocity Sm and LV ejection fraction EF
(R: 0.609, p: 0.000). LV mean Sm obtained
by TDI is a parameter that is easily obtained
and practical, and can be used to evaluate
LV systolic function in patients with
HF.
Conclusion: The
assessment of average systolic myocardial
velocity (Sm) could be used as an alternative
to LVEF. This approach may be useful especially
when the image quality is poor and maintains
high accuracy in prediction of LV systolic
dysfunction.
Key words:
Systolic function, myocardial velocities,
ejection, fraction
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