Document Detail

Cryoablation with an 8-mm tip catheter for pediatric atrioventricular nodal reentrant tachycardia is safe and efficacious with a low incidence of recurrence.
MedLine Citation:
PMID:  20230479     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Cryoablation with 4- and 6-mm tip ablation catheters has been demonstrated to be safe and effective in the treatment of atrioventricular nodal reentrant tachycardia (AVNRT) in pediatric patients, albeit with a higher rate of clinical recurrence. Limited information is available regarding efficacy, mid-term outcomes, and complications related to the use of the 8-mm Freezor Max Cryoablation catheter (Medtronic, Minneapolis, MN, USA) in pediatric patients. METHODS: We performed a retrospective review of all pediatric patients with normal cardiac anatomy who underwent an ablation procedure for treatment of AVNRT using the 8-mm tip Cryoablation catheter at three large pediatric academic arrhythmia centers. RESULTS: Cryoablation with an 8-mm tip catheter was performed in 77 patients for treatment of AVNRT (female n = 40 [52%], age 14.8 +/- 2.2 years, weight 62.0 +/- 13.9 kg). Initial procedural success was achieved in 69 patients (69/76, 91%). Transient second- or third-degree atrioventricular (AV) block was noted in five patients (6.5%). There was no permanent AV block. Of the patients successfully ablated with Cryotherapy, there were two recurrences (2/70, 2.8%) over a follow-up of 11.6 +/- 3.3 months. CONCLUSION: Cryoablation with an 8-mm tip ablation catheter is both safe and effective with a low risk of recurrence for the treatment of AVNRT in pediatric patients.
Eric S Silver; Jennifer N A Silva; Scott R Ceresnak; Nancy A Chiesa; Edward K Rhee; Anne M Dubin; Kishor Avasarala; George F Van Hare; Kathryn K Collins
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Publication Detail:
Type:  Journal Article; Multicenter Study     Date:  2010-03-05
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  33     ISSN:  1540-8159     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-07-13     Completed Date:  2010-11-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  681-6     Citation Subset:  IM    
Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York Presbyterian Hospital, Columbia University, New York, New York 10032, USA.
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MeSH Terms
Atrioventricular Block / etiology
Cryosurgery / methods*
Retrospective Studies
Tachycardia, Atrioventricular Nodal Reentry / complications,  surgery*
Treatment Outcome

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