Efficacy, Complications and Limitations of Radiofrequency Catheter Ablation in Patients With Septal Accessory Pathway: Role of Temperature Guided Ablation

Abstract

Catheter ablation using radiofrequency current has a great utility for the definitive treatment of patients with paroxysmal supraventricular tachycardia that involving an accessory atrioventricular pathway.

Septal accessory atrioventricular pathways, although less common than those with free wall accessory pathways, are among the most technically challengino to be ablated.

Thermal injury is the primary mechanism of myocardial injury during RF ablation procedures and successful results depend on both accurate mapping and adequate tissue heating.

So, temperature monitoring during RF ablation has been proposed as a technique to facilitate effective catheter ablation.

The primary objective of this study is to assess the safety, efficacy and complications of temperature-guided RF ablation of septal accessory pathways (APs) 1n comparison to power-guided mode of RF ablation.

The study included 40 patients (21 males and 19 females with symptomatic supraventricular tachycardia and in whom electrophysiological studies have re·vea!ed the presence of a single septal AP.