Considerable evidence argues against the presence of distinct upper and lower common pathways in most patients with atrioventricular nodal reentrant tachycardia.
The paper highlights that the traditional concepts of upper and lower common pathways in AVNRT lack strong evidence and their relevance remains speculative.
The concepts of upper and lower common pathways represent long-standing controversies of atrioventricular nodal reentrant tachycardia (AVNRT). Over the last years there has been considerable evidence against the presence of a lower and, especially, an upper common pathway as distinct entities that can be identified in most patients with atrioventricular reentrant tachycardia. The mechanism and relevance of these concepts remain speculative.
Demosthenes G. Katritsis (Mon,) conducted a review in Atrioventricular nodal reentrant tachycardia (AVNRT). Considerable evidence argues against the presence of distinct upper and lower common pathways in most patients with atrioventricular nodal reentrant tachycardia.