A left bundle branch block occurs when electrical conduction ... to the major deflection of the QRS complex. Note: Incomplete LBBB is present if the QRS duration is between 100 ms and 119 ms ...

first-degree AV block with left bundle branch block (LBBB) and bradycardia in one; and (v) alternating LBBB and right bundle branch block (RBBB) in one patient. The choice of pacemaker implanted ...

Results: Although intraventricular conduction delay in the form of left bundle branch block (LBBB) has traditionally been viewed as an electrophysiologic abnormality, it has now become abundantly ...

QRS duration greater than 120 milliseconds Absence of Q wave in leads I, V5 and V6 Monomorphic R wave in I, V5 and V6 ST and T wave displacement opposite to the major deflection of the QRS complex ...