Peter Søgaard1, Christian Hassager. 1. Department of Cardiology P, University Hospital, Copenhagen, Denmark. psogaard@dadlnet.dk
Abstract
PURPOSE OF REVIEW: Cardiac resynchronization therapy is a nonpharmacological treatment option in patients with heart failure and left bundle branch block but response rates are still disappointing. RECENT FINDINGS: Extent of mechanical left ventricular asynchrony as detected by tissue Doppler imaging has emerged as an independent predictor of outcome to CRT. In addition, long-term therapy delivery may be further improved through optimized lead positioning and pacemaker programming. SUMMARY: Tissue Doppler imaging should be included in the evaluation of potential CRT candidates but standardized evaluation criteria have not yet been provided.
PURPOSE OF REVIEW: Cardiac resynchronization therapy is a nonpharmacological treatment option in patients with heart failure and left bundle branch block but response rates are still disappointing. RECENT FINDINGS: Extent of mechanical left ventricular asynchrony as detected by tissue Doppler imaging has emerged as an independent predictor of outcome to CRT. In addition, long-term therapy delivery may be further improved through optimized lead positioning and pacemaker programming. SUMMARY: Tissue Doppler imaging should be included in the evaluation of potential CRT candidates but standardized evaluation criteria have not yet been provided.
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