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Long-term efficacy of cryo catheter ablation for the treatment of atrial flutter

Results from a repeat electrophysiologic study

Annibale S. Montenero, MD^*,*, Nicola Bruno, MD^*, Andrea Antonelli, MD^*, Daniele Mangiameli, MD^*, Luca Barbieri, MD^*, Peter Andrew, MMedSci, PhD^*,, Olive Murphy, MSc, Stephen O'Connor, PhD and Francesco Zumbo, MD^*

^* Cardiology Department and Arrhythmia Center of Policlinico MultiMedica, Sesto S.Giovanni, Milan, Italy
Atlas Medical Science Writers Inc., Montreal, Canada
CryoCath Technologies Inc., Kirkland, Canada

View larger version (121K): [in a new window]   Figure 1 Fluorographic images of anatomic placement of the new 7-F, 6-mm-tip, quadripolar cryo catheter for the treatment of atrial flutter. (Top) Left anterior oblique view of right atrium. (Bottom) Right anterior oblique view of right atrium. ABI = cryo ablation catheter; AL 1 = anterolateral right atrial wall electrode; CS 1 = distal coronary sinus electrode; CS os = proximal electrode at coronary sinus os; HIS = His bundle catheter; MS 12 = midseptal electrode.

View larger version (36K): [in a new window]   Figure 2 Demonstration of double potentials during the ablation procedure. Arrows in the trace demarcate the double potentials.