ANALYSIS OF ELECTROPHYSIOLOGICAL ACTIVITY IN KOCHS TRIANGLE RELEVANT TO ABLATION OF THE SLOW AV NODAL PATHWAY

Atrioventricular junctional reentrant tachycardia (AVJRT) is the most common form of paroxysmal regular supraventricular tachycardia. In pat ients with disabling, drug refractory AVJRT, catheter ablation has evo lved rapidly from a last-resort treatment in the form of interruption of atrioventricular (AV) conduction to selective modification of AV no dal function as an ideal treatment. This article will focus on the fre quently unappreciated electrophysiological activities recordable in ma n in Koch's triangle during ablation of the so-called slow pathway.