Do echocardiographic measures of dyssynchrony improve patient selection for CRT beyond current guidelines?
No single echocardiographic measure of dyssynchrony is currently recommended to improve patient selection for CRT beyond standard guidelines due to high variability.
Given the modest sensitivity and specificity in this multicenter setting despite training and central analysis, no single echocardiographic measure of dyssynchrony may be recommended to improve patient selection for CRT beyond current guidelines. Efforts aimed at reducing variability arising from technical and interpretative factors may improve the predictive power of these echocardiographic parameters in a broad clinical setting.
Chung et al. (2008) studied this question.