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Detection of early left ventricular and atrial dysfunction in overweight patients with preserved ejection fraction: a speckle tracking analysis. | LitMetric
Background : Little remains known about the role of overweight to promote progressive atrial and ventricular myocardial dysfunction. Aim of this study was to investigate the potential influence of overweight on left ventricular (LV) and atrial (LA) function, as assessed by speckle tracking strain analysis, in patients at low-to-moderate global cardiovascular risk.Methods : Seventy patients presenting 1 or more cardiovascular risk factor, with preserved ejection fraction, were enrolled. Peak atrial longitudinal strain (PALS) and Peak ventricular longitudinal strain (PVLS) were calculated by averaging values observed in all LV or LA segments, in four- and two-chamber views (global PALS and global PVLS), using a commercially available semiautomated two-dimensional (2D) strain software.Results : Global PALS was similar in the 2 groups, while global PVLS was significantly lower in the overweight group as compared to normal weight (-17.2 ± 3.3 vs. -18.7 ± 2.8, P < 0.05). Univariate analysis of correlation showed a significantly correlation between global PALS and PVLS (r = -0.43, P < 0.01), as well as with E/A ratio (r = 0.40, P < 0.01) and with LV mass index (r = -0.34, P < 0.05). In multivariate linear regression analysis, these parameters were confirmed as independent predictors of PALS.Conclusion : In subjects at low-to-moderate cardiovascular risk, overweight is a key determinant of the reduction of global LV longitudinal function as assessed by 2D strain.
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