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Tissue Doppler imaging in patients with congestive heart failure and conduction disorders

Lothar Faber*, Barbara Lamp, Juergen Vogt and Dieter Horstkotte

Department of Cardiology, Heart Centre North Rhine Westphalia, Ruhr University Bochum, Bad Oeynhausen, Germany

Received 3 May 2004; accepted 24 May 2004.

* Lothar Faber, Department of Cardiology, Heart Centre North Rhine Westphalia, Ruhr University Bochum, Georgstr. 11, D-32545 Bad Oeynhausen, Germany. Tel.: +49-5731-97-2070; fax: +49-5731-971874
lfaber{at}hdz-nrw.de
faber-lothar{at}t-online.de

Abstract

Resynchronization of segmental left ventricular mechanics as well as re-coordination 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 only a mild degree 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.

Key Words: Cardiac resynchronization therapy • Tissue Doppler echocardiography • Heart failure • Left ventricular dysfunction


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