Home >> Journal of Interventional Cardiac Electrophysiology, Volume 15, Number 3

Transcatheter cryotherapy for the treatment of supraventricular tachyarrhythmias in children: A single center experience

Authors: Papez, Andrew; Al-Ahdab, Mohamad; Dick, Macdonald; Fischbach, Peter

Source: Journal of Interventional Cardiac Electrophysiology, Volume 15, Number 3, April 2006 , pp. 191-196(6)

Publisher: Springer

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Abstract:

Transcatheter cryotherapy is an emerging technology for the treatment of children with supraventricular tachyarrhythmias. Limited data exist regarding the use of cryoablation therapy in children. We report a single center's experience with transcatheter cryoablation in the pediatric population.

A retrospective review of demographic, procedural and outcome data was performed for patients undergoing cryoablation for treatment of supraventricular tachycardia (SVT). A historical control group was taken from the 3 years preceding the introduction of cryoablation. Between August 2003 and November 2005, 83 cryoablation procedures were performed in 81 patients (age: 4 to 21 years, mean: 13.4 years) for AV nodal reentrant tachycardia (AVNRT—53), AV reentrant tachycardia (AVRT—20), ectopic atrial tachycardia (EAT—9), and junctional ectopic tachycardia (JET—1). The acute success rate for all procedures was 88% (AVNRT: 96%, AVRT: 85%, EAT: 55%, and JET: 100%). Of 72 patients that underwent successful cryoablation, nine experienced recurrence of SVT (12.5%). The control group consisted of 73 patients (AVNRT − 60, AVRT − 13). There were no differences in demographic data between the two groups. The overall success rate for the RFA group (96%) was identical to that for patients with AVNRT and AVRT undergoing cryoablation. The recurrence rate for RFA (10%) was less but not significantly different than that for cryoablation (12%). There were no complications in either group.

Cryoablation is a safe and effective alternative for the treatment of SVT in children.
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