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Updated: Jun 12, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
Atrial asystole during ventricular pacing following radiofrequency catheter ablation of accessory pathways
Ignasi Anguera1, Xavier Sabaté, Joan Nicolás
1Electrophysiology and Arrhythmia Unit IDIBELL, Cardilogy Department, Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain. ignasi.anguera@gmail.com
Abstract:
Sinus node bradycardia or sinus node arrest is a documented phenomenon during radiofrequency catheter ablation. In addition, sinus node inhibition during ventricular pacing has been described as an infrequent occurrence in the course of diagnostic electrophysiology studies. The proposed mechanism in both situations is intense stimulation of vagal afferent pathways leading to a Bezold-Jarisch-like phenomenon. In the present report, we describe a series of three cases of atrial asystole during ventricular pacing following radiofrequency catheter ablation of accessory pathways. Potential pathophysiologic mechanisms are discussed.
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