Longitudinal Strain Delay Index by Speckle Tracking Imaging

Longitudinal Strain Delay Index by Speckle Tracking Imaging A New Marker of Response to Cardiac Resynchronization Therapy

Background—In heart failure patients with left ventricular dyssynchrony, contractility in delayed segments does not fully contribute to end-systolic function. We quantified this reserve of contraction related to mechanical dyssynchrony to predict response to cardiac resynchronization therapy by the strain delay index, which was defined as the sum of the difference between peak and end-systolic ...

myocardial strain and strain rate imaging: comparison between doppler derived strain imaging and speckle tracking echocardiography

Letter by Jeilan et al regarding article, "Longitudinal strain delay index by speckle tracking imaging: a new marker of response to cardiac resynchronization therapy".

BACKGROUND In heart failure patients with left ventricular dyssynchrony, contractility in delayed segments does not fully contribute to end-systolic function. We quantified this reserve of contraction related to mechanical dyssynchrony to predict response to cardiac resynchronization therapy by the strain delay index, which was defined as the sum of the difference between peak and end-systolic ...

Feasibility and reference values of left atrial longitudinal strain imaging by two-dimensional speckle tracking

BACKGROUND The role of speckle tracking in the assessment of left atrial (LA) deformation dynamics is not established. We sought to determine the feasibility and reference ranges of LA longitudinal strain indices measured by speckle tracking in a population of normal subjects. METHODS In 60 healthy individuals, peak atrial longitudinal strain (PALS) and time to peak longitudinal strain (TPLS)...

The role of speckle tracking strain imaging in cardiac pacing.

In recent years, concerns have been raised about possible harmful effects of long-term right ventricular (RV) apical pacing. These detrimental effects may be related to changes in left ventricular (LV) mechanics during RV apical pacing. As a consequence, alternative RV pacing sites have been proposed, and in selected patients an upgrade from RV to biventricular pacing may be considered. Novel t...