We report the case of a 14-year-old boy with ventricular preexcitation. A standard, fluoroscopy guided, ablation procedure was successfully performed in a postero-midseptal region with a total fluoroscopy time of about 45 min (2430 cGy.cm(2)). A few hours after the procedure, preexcitation reappeared. A second ablation procedure was scheduled using the EnSite NavX™ mapping system. During mapping along the tricuspid groove, preexcitation suddenly disappeared due to mechanical "bumping" of the accessory pathway and it did not recover over the next 30 min. As per our routine practice, the phase of geometry reconstruction has been continuously recorded by the system; thus, an off-line analysis allowed to pinpoint the site of earliest activation and the site of mechanical bumping, where radiofrequency obtained the accessory pathway ablation. The second procedure was performed without using fluoroscopy at all. Thanks to the geometry reconstruction, the procedure was completely successful thus avoiding a further rehospitalization.

Manifold benefits of choosing a minimally fluoroscopic catheter ablation approach / M. Casella, A. Dello Russo, G. Fassini, D. Andreini, P. De Iuliis, S. Mushtaq, S. Bartoletti, S. Riva, C. Tondo. - In: WORLD JOURNAL OF CARDIOLOGY. - ISSN 1949-8462. - 5:2(2013 Feb 26), pp. 8-11. [10.4330/wjc.v5.i2.8]

Manifold benefits of choosing a minimally fluoroscopic catheter ablation approach

D. Andreini;S. Mushtaq;S. Bartoletti;C. Tondo
2013

Abstract

We report the case of a 14-year-old boy with ventricular preexcitation. A standard, fluoroscopy guided, ablation procedure was successfully performed in a postero-midseptal region with a total fluoroscopy time of about 45 min (2430 cGy.cm(2)). A few hours after the procedure, preexcitation reappeared. A second ablation procedure was scheduled using the EnSite NavX™ mapping system. During mapping along the tricuspid groove, preexcitation suddenly disappeared due to mechanical "bumping" of the accessory pathway and it did not recover over the next 30 min. As per our routine practice, the phase of geometry reconstruction has been continuously recorded by the system; thus, an off-line analysis allowed to pinpoint the site of earliest activation and the site of mechanical bumping, where radiofrequency obtained the accessory pathway ablation. The second procedure was performed without using fluoroscopy at all. Thanks to the geometry reconstruction, the procedure was completely successful thus avoiding a further rehospitalization.
Radiation exposure ; Electroanatomical mapping ; Accessory pathway ; Supraventricular arrhythmias ; Radiofrequency ablation
Settore MED/11 - Malattie dell'Apparato Cardiovascolare
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/220654
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