Identification of wasted energy is a key to predict positive response to cardiac resynchronization therapy: is strain imaging the answer?
نویسندگان
چکیده
منابع مشابه
Wasted septal work in left ventricular dyssynchrony: a novel principle to predict response to cardiac resynchronization therapy
AIMS Cardiac resynchronization therapy (CRT) in heart failure is limited by many non-responders. This study explores whether degree of wasted left ventricular (LV) work identifies CRT responders. METHODS AND RESULTS Twenty-one patients who received CRT according to guidelines were studied before and after 8 ± 3 months. By definition, segments that shorten in systole perform positive work, whe...
متن کاملThe role of echocardiography in the assessment of mechanical dyssynchrony and its importance in predicting response to prognosis after cardiac resynchronization therapy.
The aim of this review is to synthesize the published evidence regarding the benefits of identifying mechanical asynchrony before implantation of biventricular devices, and the role of echocardiography in the identification and quantification of mechanical asynchrony. It summarizes the published studies addressing the several echocardiographic parameters of dyssynchrony that have already proven...
متن کاملLongitudinal 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 ...
متن کاملPilot study using 3D–longitudinal strain computation in a multi-parametric approach for best selecting responders to cardiac resynchronization therapy
BACKGROUND Almost all attempts to improve patient selection for cardiac resynchronization therapy (CRT) using echo-derived indices have failed so far. We sought to assess: the performance of homemade software for the automatic quantification of integral 3D regional longitudinal strain curves exploring left ventricular (LV) mechanics and the potential value of this tool to predict CRT response. ...
متن کاملLetter 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 ...
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عنوان ژورنال:
- Circulation. Cardiovascular imaging
دوره 6 2 شماره
صفحات -
تاریخ انتشار 2013