A left bundle branch block occurs when electrical conduction ... Approximately 50% of left bundle branch blocks are associated with structural heart disease, while the other half are idiopathic ...

Huang W, Su L, Wu S, Xu L, Xiao F, Zhou X, Ellenbogen KA. A novel pacing strategy with low and stable output: pacing the left ...

Kontos et al., from the Division of Cardiology and Department of Emergency Medicine at the Virginia Commonwealth University in Richmond, VA, looked at patients who had LBBB on their initial ECG ...

Patients requiring a pacemaker were older and in higher New York Heart Association (NYHA ... disturbances preoperatively, especially LBBB and AV block. The need for pacemaker implantation was ...

A rate-dependent LBBB can occur at times of fast heart rates. This may be caused by myocardial ischemia or refractoriness of the left bundle at faster heart rates. When occurring at heart rates ...