Chagas disease (CD) is a frequent cause of dilated cardiomyopathy (CMP) in developing countries, leading to clinical heart failure and worse prognosis. Therefore, the development and evolution of this CMP has always been a major topic in numbers of previous studies. A comprehensive echocardiographic study of left ventricular (LV) mechanics, fully assessing myocardial contraction, has never been done before. This could help characterize and improve the understanding of the evolution of this prevalent CMP.A total of 47 chagasic and 84 control patients were included in this study and allocated in groups according to LV ejection fraction. 2D-Echocardiogram was acquired for LV mechanics analysis by speckle tracking echocardiography.Mean age of chagasic individuals was 55y and 16 (34 

作者：Marcio Silva Miguel, Lima；Hector R, Villarraga；Maria Cristina Donadio, Abduch；Marta Fernandes, Lima；Cecilia Beatriz Bittencourt Viana, Cruz；Marcio Sommer, Bittencourt；Mariana Callil, Voos；Joao Cesar Nunes, Sbano；Wilson, Mathias；Jeane Mike, Tsutsui

来源：Cardiovascular ultrasound 2016 年 14卷 1期