Acute success of cryoablation of left-sided accessory pathways: a single institution study.

Full Abstract

OBJECTIVE: To compare the acute success and recurrence rate of cryoablation for left-sided accessory pathways (AP) with controls who underwent radiofrequency ablation (RFA) at the same institution. BACKGROUND: Catheter cryoablation of supraventricular tachycardia (SVT) is considered to be a safer alternative a compared with RFA. At our institution, cryoablation has become the primary interventional modality for all APs. The reported success rates of cryoablation for AP-mediated tachycardia have generally been less favorable than for RFA. However, the location of AP may influence cryoablation outcome. Furthermore, there are little data available on cryoablation of left-sided pathways. METHODS: A chart review was performed for all patients undergoing cryoablation between August 2005 and August 2007. Twenty-nine patients (mean age 13 years, range 6-18 years) were identified with SVT secondary to left-sided AP. The data collected included patient age, height, weight, date of procedure, mapping, ablation and procedure time, pathway location, success, and recurrence. Cryoablation was performed via a transseptal approach. Procedural success and recurrence rate were compared with our most recent 28 patients undergoing RFA ablation. RESULTS: Procedural success was achieved in 97% of patients in the cryoablation group, compared with 100% in the RFA control group. Recurrence rate in the cryoablation group was 1 of 24 (4.2%) patients compared with 4 of 28 (14%) patients in the RFA group over 12 months. CONCLUSION: Cryoablation can be safely and effectively used in the treatment of left-sided AP. Long-term outcomes remain to be seen.

Author information

Author/s: Gist, Katja M (KM); Bockoven, John R (JR); Lane, John (J); Smith, Grace (G); Clark, John M (JM);

Affiliation: Division of Pediatric Cardiology, Heart Center, Akron Children's Hospital, One Perkins Square, Akron, OH 44308, USA. gist.kat(-atsign-)gmail.com

Journal and publication information

Publication Type: Clinical Trial; Journal Article

Journal: Journal of cardiovascular electrophysiology (J Cardiovasc Electrophysiol), published in United States. (Language: eng)

Reference: 2009-Jun; vol 20 (issue 6) : pp 637-42

Dates: Created 2009/07/28; Completed 2009/10/15;

PMID: 19207763, status: MEDLINE (last retrieval date: 10/15/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

Comments and Corrections

CommentIn: J Cardiovasc Electrophysiol. 2009 Jun;20(6):643-4. (PMID: 19207765)

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