Atrioventricular Nodal Electrophysiology

Atrioventricular nodal electrophysiology: still exciting after all these years.

The anatomical atrioventricular node was first described by Tawara in 1906.1 Although some surmised the node to be the region responsible for delay between contraction of atria and ventricles, Erlanger in 1912 localized the major portion of delay to a latency at the transition between atrial and nodal fibers.2 Nearly a century of research on properties of the atrioventricular (AV) node has subs...

Atrioventricular nodal block with atrioventricular nodal reentrant tachycardia ablation.

Atrioventricular dissociation between two atrioventricular nodal rhythms.

A case presenting with AV nodal escape rhythms after obvious sinus depression is described. The escape rhythms arise from two dissociated AV nodal pacemakers with differential physiological properties. Variation in the rate of the upper AV nodal pacemaker results in a form of escape-capture bigeminy. Temporary acceleration of the sinus rhythm results in dissociation between sinus and lower AV n...

Dual Atrioventricular Nodal Pathways Physiology: A Review of Relevant Anatomy, Electrophysiology, and Electrocardiographic Manifestations

More than half a century has passed since the concept of dual atrioventricular (AV) nodal pathways physiology was conceived. Dual AV nodal pathways have been shown to be responsible for many clinical arrhythmia syndromes, most notably AV nodal reentrant tachycardia. Although there has been a considerable amount of research on this topic, the subject of dual AV nodal pathways physiology remains ...

Atrioventricular Nodal Reentrant Paroxysmal Tachycardia

amount of myocardium. Am J Cardiol 36: 37, 1975 5. Ewy GA: Defibrillation paddle electrodes. Proceedings of the Cardiac Defibrillation Conference, Purdue University, West Lafayette, Indiana, 1975, p 39 6. Ewy GA: Effectiveness of direct current defibrillation. Role of paddle electrode size. I1. Am Heart J 93: 674, 1977 7. Rush S, Lepeschkin E, Gregaritsch A: Current distribution from defibrilla...