Revealing the Origin of Typical and Atypical Forms of Atrioventricular Nodal Reentrant Tachycardia with a Compact Computer Model of Rabbit AV Node

In this work, using our recent compact multifunctional model of rabbit AV node, we studied the onset of typical and atypical forms of atrioventricular nodal reentrant tachycardia (AVNRT) and revealed the origin of both forms and their incidence in clinics.We demonstrated for the first time using computer simulations that differences in the effective refractory periods of slow and fast conduction pathways during anterograde and retrograde conduction determine the type (typical or atypical) of AVNRT.The obtained results correspond to the clinical and experimental data and explain the significant prevalence of the typical type over the atypical one.