The normal conduction system in the ventricles is called the His-Purkinje system and consists of cells that can conduct electricity quite rapidly. Thus, normal conduction of an electrical impulse ...

followed by retrograde penetration of the His-Purkinje system and finally retrograde activation of the AV node. One can take advantage of this significant difference in retrograde conduction time ...

Because the normal ventricular conduction system (His-Purkinje) is used, the QRS complex is frequently narrow. A junctional rhythm is normally slow — less than 60 beats per minute. When faster ...