Summary
Resynchronization of segmental left ventricular mechanics as well as re-cordination of both atrio-ventricular and inter-ventricular contraction are potential mechanisms responsible for the clinical benefit observed in patients with advanced congestive heart failure treated by cardiac resynchronization therapy (CRT). Initially electrical conduction problems, in the majority of cases a left bundle branch block (LBBB), were considered the target for CRT. However, growing experience with CRT in different patient populations including those with milder degrees of conduction disturbance, and improved cardiac imaging utilizing the tissue Doppler approach, have shown the complexity of CRT and the usefulness of sophisticated echocardiographic imaging techniques for therapeutic decision making and optimization of CRT device settings.
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Faber, L. Echocardiography-based optimization of cardiac resynchronization therapy in patients with congestive heart failure and conduction disorders. Herzschr. Elektrophys. 17 (Suppl 1), i73–i79 (2006). https://doi.org/10.1007/s00399-006-1111-y
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DOI: https://doi.org/10.1007/s00399-006-1111-y