End-diastolic wall thickness as a predictor of reverse remodelling after cardiac resynchronization therapy: a two-dimensional echocardiographic study.

Presence of left ventricular contractile reserve, evaluated by means of dobutamine stress-echo test, is able to predict response to cardiac resynchronization therapy.

Effect of pacing the right ventricular mid-septum tract in patients with permanent atrial fibrillation and low ejection fraction.