Global longitudinal strain measured by two-dimensional speckle tracking echocardiography is closely related to XXXX size in chronic @entity299 .

@entity1 @entity583 @entity1188 @entity299
2D-STE (two-dimensional speckle tracking echocardiography) is a novel echocardiographic modality that enables angle-independent assessment of myocardial deformation indices. In the present study, we tested whether peak systolic epsilon(parallel) (longitudinal strain) values measured by 2D-STE could identify areas of @entity583 ( @entity583 ) as determined by CE MRI (contrast-enhanced magnetic resonance imaging). Conventional echocardiographic apical long-axis recordings were performed in 38 @entity1 , 9 months after a first @entity583 . Peak systolic epsilon(parallel) measured by 2D-STE in 16 left ventricle segments was compared with segmental @entity1188 mass and transmurality assessed by CE MRI. Segmental values were averaged to global and territorial values for assessment of global function and myocardial function in the coronary distribution areas. CE MRI identified transmural @entity1188 in 27 @entity1 , and a mean @entity1188 size of 36+/-25 g. Peak systolic epsilon( parallel) correlated with the @entity1188 mass at the global level (r=0.84, P<0.001). A strain value of -15% identified @entity1188 with 83% sensitivity and 93% specificity at the global level and 76% and 95% at the territorial level, and a strain value of -13% identified transmural @entity1188 with 80% sensitivity and 83% specificity at the segmental level. Global @entity1188 mass correlates with the wall motion score index (r=0.70, P<0.001), and left ventricular ejection fraction measured by MRI or echocardiography (r=-0.71 and -0.58, both P<0.001). In chronic @entity1188 , peak systolic epsilon(parallel) measured by 2D-STE correlates with the @entity1188 mass assessed by CE MRI at a global level, and separates infarcted from non-infarcted tissue. Global strain is an excellent predictor of @entity583 size in chronic @entity299 .
