Work

Circumferential and radial myocardial strain in cardiomyopathy patients with and without left bundle branch block

Year: 2009

Type: article

Abstract: Electrical dyssynchrony associated with prolonged QRS duration is a commonly used criterion to select symptomatic heart failure patients for cardiac resynchronization therapy (CRT). However, there is concern that electrical dyssynchrony criterion is inadequate as 30–40% of patients do not respond to CRT [ 1 ]. Studies have shown that assessment of mechanical dyssynchrony may be a better predictor of response [ 2 ]. Most of the studies have assessed mechanical dyssynchrony in the longitudinal axis of myocardial motion [ 3 ]. There is limited data on the assessment of short axis mechanical dyssynchrony in humans. We sought to examine the relationship between electrical and mechanical dyssynchrony in mid-ventricular short axis using CMR tagging in patients with depressed left ventricular function.

Source: Journal of Cardiovascular Magnetic Resonance

DOI: 10.1186/1532-429x-11-s1-p14