To use echocardiography to determine early and late haemodynamic effects of atrio-biventricular (A-BiV) pacing on left ventricular (LV) function and their interrelations with exercise tolerance.
Left ventricular remodelling and haemodynamic effects of multisite biventricular pacing in patients with left ventricular systolic dysfunction and activation disturbances in sinus rhythm: sub-study of the MUSTIC (Multisite Stimulationin Cardiomyopathies) trial.
