Quantitative evaluation of short-term effect of cardiac resynchronization therapy by automated motion tracking of mitral annular displacement / 中华超声影像学杂志

ABSTRACT

Objective To evaluate the tissue motion tracking of mitral annular displaeement(TMAD) method in the assessment of short-term effect of cardiac resynchronization therapy (CRT). Methods Twenty six chronic heart failure (CHF) patients with CRT were detected by TMAD. The maximal displacement of the six points of mitral annulus(DS), the standard deviation of the time to regional peak systolie displacement of the six points (Td-sd) and the maximal temporal difference of any two points(Tds-diff) were compared before and one month after CRT. And the correlation between mean displacement and left ventricular ejection fraetion(LVEF),left ventricular end systolic volume(LVESV), fraction area change (FAC) was analyzed. Results Compared with the pre-operatively, the displacement and the mean displaeement of the six points of mitral annulus were significantly increased(P<0.01),Tds diff and Td-sd were decreased(P<0.05) one month after CRT. TMAD correlated with LVEF,LVESV and FAC (r =0.419, r = 0.529, r = 0.567, P <0.05) one month after CRT. Conclusions TMAD is a new technology to evaluate the short-term effect of CRT.