Archivos de cardiología de México
Print version ISSN 1405-9940
AMARA, Walid; DE SISTI, Antonio; ROMERO, Laura and TONET, Joelci. Catheter cryoablation of atrio-ventricular nodal reentrant tachycardia. A clinical review. Arch. Cardiol. Méx. [online]. 2010, vol.80, n.4, pp. 283-288. ISSN 1405-9940.
Cryoablation is a new method in interventional cardiac electrophysiology for percutaneous catheter ablation of cardiac arrhythmias. Cryothermal mapping enables the functional assessment of a particular site before permanent ablation. In this way, the targeted tissue may be confirmed as safe for ablation. This is useful in high-risk ablation, for example, next to the His bundle or the compact AV node. In the last decade, several studies have been addressed to AV-nodal reentry tachycardia (AVNRT) cryoablation. Current experiences indicate that cryoablation for AV-nodal reentry tachycardia is effective and safe. However, its wide use seems to be somewhat limited by a slightly lower efficacy when compared to radiofrequency. Further studies evaluating long-term success of cryothermal ablation versus radiofrequency are warranted. However, for high-risk ablations, cryoenergy is very helpful and should be systematically used. This article is a review of acute and long-term effects of cryoablation in patients suffering of AV-nodal reentry tachycardia episodes.
Keywords : AVNRT; Cryoablation; AV-block; France.