THREE-DIMENSIONAL IMAGING TO ASSESS LEFT VENTRICULAR DYSSYNCHRONY

Cardiac resynchronization therapy improves clinical symptoms and prognosis of heart failure patients. However, it has been shown that up to 40% of patients do not respond to this therapy. Three main determinants of cardiac resynchronization therapy response have been identified: left ventricular dyssynchrony, left ventricular lead position, and extent and location of myocardial scar tissue. Two-dimensional echocardiography is the first imaging technique to evaluate patients who may be candidates for cardiac resynchronization therapy. However, a multimodality approach based on 3-dimensional imaging techniques may provide a more comprehensive evaluation of these patients by combining the assessment of the aforementioned pathophysiological determinants of cardiac resynchronization therapy response. 2011 Sociedad Española de Cardiologı́a. Published by Elsevier España, S.L. All rights reserved. Técnicas de imagen tridimensional en el tratamiento de resincronización cardiaca