Atrioventricular junctional rhythm: classification and clinical significance.

A classification of atrioventricular (A-V) junctional impulse formation is presented, based on recent observations in clinical and experimental cardiology. Several examples of intermittent and persistent manifestations of A-V junctional impulse formation are correlated with experimental findings to illustrate the complexity of these arrhythmias. Their clinical significance and management are briefly discussed, and the role of cardiac glycosides in the genesis of these rhythm disorders is reemphasized.