Standard values for transthoracic three-dimensional echocardiographic new systolic-derived speckle tracking parameters in a normal population.

There is a paucity of information describing 3D echocardiographic new systolic-derived speckle tracking parameters of a normal population. We sought to evaluate by 3D echo: rotation, twist, torsion regional, torsion basal, radial 3D strain, and 3D displacement – in a population with normal ECG, 2D and 3D echocardiographic analyses. This information may be relevant for cardiac resynchronization therapy (CRT) evaluation in patients with advanced heart failure in ICUs.