Retrograde Multiple and Multifiber Accessory Pathway Conduction in the Wolff‐Parkinson‐White Syndrome:

Abstract

The existence of a retrograde multiple or multifiber accessory pathway in patients with WPW syndrome is associated with a higher incidence of clinical and induced AF. Successful ablation of the retrograde multiple or multifiber accessory pathway can eliminate the induction of both AVRT and AF.

Interatrial conduction in patients with paroxysmal atrial fibrillation and in healthy subjects

“…Hence an ectopic beat or collision of activation fronts per se could then initiate AF. A parallel mechanism has been suggested to explain the appearance of AF in Wolff-Parkinson-White syndrome patients with atrioventricular accessory pathways [26].…”

Atrial fibrillation with Wolff-Parkinson-White syndrome

“…The incidence of AF initiated during ventricular pacing and AVRT was significantly greater in the multiple AP patients. A very interesting finding in this study 27 was that AF inducibility during AVRT and ventricular pacing was eliminated by partial ablation of multiple or multifiber AP. However, AVRT inducibility remained in most patients with partial ablation of the multiple o multifiber AP.…”

“…Iesaka et al 27 hypothesized that during AVRT, the complex excitation inputs into the atrium over the retrograde multiple or multifiber AP could trigger AF. They identified retrograde multiple and multifiber AP based on the results of electrophysiologic studies and radiofrequency catheter ablation.…”

Six mechanisms of supraventricular tachycardia in the same patient: Report of a case

“…atrial flutter or fibrillation) by AVRT [6]. The ablation of multiple mechanisms of tachycardia in the same patient sets a challenge to the electrophysiologyst.…”