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Catheter ablation of idiopathic ventricular tachycardia in children using the EnSite NavX system with/without fluoroscopy

Published online by Cambridge University Press:  10 September 2013

Isa Ozyilmaz ,
Yakup Ergul ,
Celal Akdeniz ,
Erkut Ozturk ,
Ibrahim C. Tanidir  and
Volkan Tuzcu
Isa Ozyilmaz
Affiliation:
Department of Pediatric Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
Yakup Ergul
Affiliation:
Department of Pediatric Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
Celal Akdeniz
Affiliation:
Department of Pediatric Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
Erkut Ozturk
Affiliation:
Department of Pediatric Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
Ibrahim C. Tanidir
Affiliation:
Department of Pediatric Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
Volkan Tuzcu*
Affiliation:
Department of Pediatric Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
*
Correspondence to: V. Tuzcu, Istasyon Mah. Turgut Ozal Bulvarı No. 11, 34303 Halkali-Istanbul, Turkey. Tel: +90 212 692 20 00-1446; Fax: +90 212 471 94 94; E-mail: vtuzcu@gmail.com
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Abstract

Objectives

Curative therapy of idiopathic ventricular tachycardia remains a challenge in interventional electrophysiology. The aim of this study was to demonstrate the utility of an EnSite NavX system in the catheter ablation of idiopathic ventricular tachycardia in children.

Patients and methods

In all, 17 children with idiopathic ventricular tachycardia underwent electrophysiological studies using the EnSite NavX system guidance.

Results

The mean patient age was 13 ± 2.4 years (range: 7.8–17.9) and the mean patient weight was 52.3 ± 11.9 kg (range: 32–75). The origin of ventricular tachycardia was in the right ventricular outflow tract in nine patients, in the left ventricle in six, near the bundle of His/right bundle branch in one, and in the left aortic cusp in one. The mean procedure and fluoroscopy times were 169.3 ± 43.2 minutes and 8 ± 10.8 minutes, respectively. No fluoroscopy was used in six patients. The mean radiation exposure was 33.1 ± 56.4 mGy. Acute success was achieved in 14 patients (82%). The focus of ventricular tachycardia was epicardial in two failed procedures. During a mean follow-up of 8.5 ± 7.6 months, ventricular tachycardia recurred in three patients, two of whom underwent a second procedure. Except for one patient who developed transient right bundle branch block, no complications were seen.

Conclusion

Catheter ablation of idiopathic ventricular tachycardia in children can be performed safely and effectively with low fluoroscopy exposure using the EnSite NavX system.

Keywords

Ventricular tachycardialimited fluoroscopythree-dimensional mappingcatheter ablationchildren
Type
Original Articles
Information
Cardiology in the Young , Volume 24 , Issue 5 , October 2014 , pp. 886 - 892
Copyright
Copyright © Cambridge University Press 2013 

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