Bimodal distribution of QRS complex duration in patients with dilated cardiomyopathy undergoing an ICD implant procedure
Abstract
In patients with heart failure with reduced ejection fraction (HFrEF), QRS duration is of the uttermost importance. Substantial proportion of patients with HFrEF and sufficiently prolonged QRS complex, especially those with left bundle branch block (LBBB), may significantly benefit from cardiac resynchronization therapy.