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Minerva Cardioangiologica 2009 February;57(1):23-7

Copyright © 2009 EDIZIONI MINERVA MEDICA

language: English

Motion Index: a new parameter to evaluate the diastole by M-Mode imaging

Fazio G., Novo G., Evola G., Sutera L., Trapani R., Fabiano A., D’angelo L., Visconti C., Lunetta M., Indovina G., Ferrara F., Novo S.

Unit of Cardiology Paolo Giaccone Policlinic, Palermo, Italy


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Aim.
Heart failure with normal left ventricle (LV) ejection fraction is
commonly understood as diastolic heart failure because this expression
implies the presence of LV diastolic dysfunction diagnosed by specific
echocardiographic findings, such as slow LV relaxation and increased LV
stiffness. In this work the authors propose a new parameter named
Motion Index, which is measurable by M-Mode technique and it is likely
linked to diastolic dysfunction.
Methods. A patient population composed by 134 subjects was enrolled.
They all were in New York Heart Association (NYHA) functional class II.
Echocardiogram carried out in all patients allowed the authors to
distinguish 2 patient arms depending on the presence or absence of
diastolic dysfunction, evaluated by flow Doppler and tissue Doppler.
Results. After carrying out every echocardiographic examination, the
authors also measured the new parameter that called Motion Index, and
found that it had an average value of 46 in patients with normal
diastolic function and 33.5 in patients with diastolic dysfunction.
This parameter did not depend on systolic dysfunction.
Conclusion. Data obtained showed a statistically significant
correlation between Motion Index and means of diastolic function
assessed by both flow and tissue Doppler.

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