PMID: 16623275Apr 21, 2006Paper

Can we cure atrial flutter with radiofrequency ablation in an hour?

Vnitr̆ní lékar̆ství
Z StárekD Herman

Abstract

Radiofrequency ablation of common atrial flutter requires the creation of a complete transmural ablation line across cavotricuspid region to achieve bidirectional conduction block. Irrigated tip catheters facilitate rapid achievement of this block by creation larger and deeper lesions. The EASTHER registry was organized to collect data about the efficacy of the procedure in small and middle volume centres in Central and Eastern Europe, all using THERMOCOOL catheter technology. Easther is a prospective registry (April 2002-February 2003). 133 consecutive patients (81.1% male, age 59.0 +/- 10.4 years, range 30-81 years) with common atrial flutter were enrolled. Coincidence with atypical flutter was observed in 2.7%. Patients had a history of flutter of 31.0 +/- 53.6 month (range 1-403) and concomitant atrial fibrillation was observed in 42.9%. Structural heart disease was present in 38.9%. Amount of re-ablated cases was 14%. RF energy was applied during 60 sec in power-controlled mode at a setting between 40 to 50 W with an average flow rate of 19.0 ml/min. Acute success rate defined as bi-directional block was achieved in 93.1%, although 94.7% of cases were assessed successful by the treating electrophysiologist. Average number ...Continue Reading

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