Why the study?
Does left ventricular dyssynchrony alone predict response to cardiac resynchronization therapy?
Does left ventricular dyssynchrony alone predict response to cardiac resynchronization therapy?
Long-axis dyssynchrony measurements alone are insufficient to predict CRT response, missing 40% of responders.
Long-axis DYS alone risks missing CRT responders; leaves open whether multimodal indices improve selection.
CRT response is dictated by correction of multiple independent mechanisms of which LVDYS is only one. Long-axis DYS measurements alone failed to detect 40% of responders.
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Parsai et al. (2008) studied this question.
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