Slow Pathway Ablation. Introduction: The relationship between temperature at the electrode-tissue interface and the loss of AV and ventriculoatrial (VA) conduction is not established, and the optimal target temperature for the slow pathway approach to radiofrequency ablation of AV nodal reentrant tachycardia (AVNRT) is unknown. Therefore, the purpose of this study was to compare target temperat...

Abstract Introduction Slow-fast AVNRT can rarely present as incessant SVT, particularly in patients with increased HV interval. We describe a case of typical AVNRT, treated without transcatheter ablation. Case Presentation An 83-year-old man, history PAF, was admitted to our ICU complaining dyspnea, dizziness and amaurosis. His ECG at presentation depicted sinus bradycardia, first degree AVB (P...

OBJECTIVE To search for a reliable anatomical landmark within Koch's triangle to predict the risk of atrioventricular (AV) block during radiofrequency slow pathway catheter ablation of AV nodal re-entrant tachycardia (AVNRT). PATIENTS AND METHODS To test the hypothesis that the distal end of the AV nodal artery represents the anatomical location of the AV node, and thus could be a useful land...

OBJECTIVE To assess immediate and long term success of "fast" pathway catheter ablation with graded use of radiofrequency energy in patients with classic atrioventricular nodal reentrant tachycardia (AVNRT) and evaluate clinical, procedure related, and electrophysiological features affecting long term results. DESIGN 31 consecutive patients with classic AVNRT at electrophysiological study, wh...

The goal of catheter ablation is to create lesions that would cause local tissue destruction and thus eliminate or modify arrhythmia substrate. This is commonly accomplished by changing cellular temperature at two extremes by either heating or cooling with radiofrequency (RF) and cryothermal energy respectively. Both RF and cryoablation technologies are widely available. It is because of the “c...

Introduction Atrioventricular nodal reentrant tachycardia (AVNRT) is the second most frequent form of paroxysmal narrow complex tachycardia in the pediatric population. A conservative approach is used for ablation in children because of anatomical limitations and risks related to a permanent pacemaker in the case of atrioventricular nodal conduction damage. Cryoablation has emerged in the first...

Atrioventricular Nodal Reentry Tachycardia (AVNRT) ablation is a common procedure in contemporary electrophysiology practice. Traditionally for AVNRT has been performed with non-irrigated catheters, guided by fluoroscopy and intracardiac electrograms. Increasingly electroanatomic mapping systems are utilized to allow low or zero procedures. Contact force catheters can provide information on tis...

Junctional ectopic tachycardia (JET) occurs postoperatively or after catheter ablation in the region of Koch's triangle. The post-ablation incidence JET reported medical literature is very low. We report case a 13-year-old female patient who underwent slow pathway for atrioventricular node reentrant and subsequently developed JET. An accelerated automatic focus was found junction area due to ra...