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Assessment of the maximum voltage-guided technique for cavotricuspid isthmus ablation during ongoing atrial flutter

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Journal of Interventional Cardiac Electrophysiology Aims and scope Submit manuscript

Abstract

Objectives

We aimed to test the maximum voltage-guided cavotricuspid isthmus (CTI) ablation technique during ongoing atrial flutter.

Background

Former pathological and electrophysiological studies clarified that the cavotricuspid isthmus is composed of distinct muscular bundles, which are responsible for the conduction of electrical activation. Based on this observation, a maximum voltage-guided ablation technique (MVGT) was developed. This technique was assessed during pacing from the coronary sinus and was reported to be a feasible method to reach bidirectional isthmus block without the need for a complete anatomic ablation line.

Methods

This was a prospective, randomized single center study. Twenty patients underwent CTI ablation during atrial flutter. In group I (10 pts) CTI ablation was performed with complete anatomical ablation line. In group II (10 pts) ablation was guided by the highest amplitude potentials on the CTI sequentially until bidirectional isthmus block was reached. The following parameters were compared: acute success rate, procedure time, fluoroscopy time, number of radiofrequency (RF) applications and total RF duration.

Results

In all patients, atrial flutter terminated during ablation. Bidirectional isthmus block could be achieved in all pts. Procedure time was shorter in group II (107 ± 40 vs 68 ± 19 min, p < 0.01). Significantly less fluoroscopy was used in group II (22.6 ± 10.6 vs 12.1 ± 3.8 min, p < 0.01). There were less RF applications in group II (27.1 ± 21.5 vs 5.9 ± 2.4, p < 0.001).

Conclusions

(1) The major finding of this study is that MVGT is a feasible method even during ongoing atrial flutter. (2) Our data confirm that MVGT is an effective technique for CTI ablation with considerable decrease in procedure and fluoroscopy times.

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Authors and Affiliations

  1. Gottsegen Gorgy Hungarian Institute of Cardiology, Haller u. 29, 1096, Budapest, Hungary

    T. Bauernfeind, A. Kardos, C. Foldesi, A. Mihalcz, P. Abraham & T. Szili-Torok

Authors
  1. T. Bauernfeind
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  2. A. Kardos
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  3. C. Foldesi
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  4. A. Mihalcz
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  5. P. Abraham
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  6. T. Szili-Torok
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Correspondence to T. Szili-Torok.

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Bauernfeind, T., Kardos, A., Foldesi, C. et al. Assessment of the maximum voltage-guided technique for cavotricuspid isthmus ablation during ongoing atrial flutter. J Interv Card Electrophysiol 19, 195–199 (2007). https://doi.org/10.1007/s10840-007-9158-1

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  • DOI: https://doi.org/10.1007/s10840-007-9158-1

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