Abstract

TAZAR¹, Jorge et al. Assessment of left atrial function with the use of analysis of myocardial deformity specke tracking. Insuf. card. [online]. 2015, vol.10, n.2, pp.57-65. ISSN 1852-3862.

Introduction. The size and function of the left atrium (LA) are predictors of poor prognosis. New echocardiographic techniques allow the assessment of global and regional function of the LA. Objective. To compare the role of LA using atrial myocardial deformation (AMD) in patients with dilatation of LA and in control subjects. Methods. This is a prospective study in 50 patients over 18 years, studied between July and December 2013. Epidemiological data were recorded and echocardiographic measurements were taken in M mode, Doppler and speckle tracking. Results. The 50 patients were divided into two groups: dilated LA (A) and normal LA (B) were studied. There was a significant linear correlation between the area and volume of the LA in A group and significant differences in the global longitudinal strain between the two groups. The percentage of AMD was higher in B group. There was a significant inverse linear correlation in A group, between velocity, global strain and global strain with the LA volume. Conclusions. The increase in LA volume was associated with a decreased function of reservoir of LA. The AMD allows us to assess the regional and global non-invasive of LA early dysfunction.

Keywords : Left atrial function; Strain; Strain left atrial rate; Atrial myocardial deformation.

        · abstract in Spanish | Portuguese     · text in Spanish     · Spanish ( pdf )