Published online: Abstract Background: Although atrial fibrillation AF ablation is considered a technically challenging procedure, studies on the learning atrial fibrillation of different pulmonary vein isolation PVI techniques are limited.
We investigated the time-dependent changes in procedural parameters, complication rates, and in the 1-year clinical outcome during our initial experience with circular multipolar phased radiofrequency RF ablation. Methods and results: The first consecutive patients 40 female; age: Procedural parameters and atrial arrhythmia-free survival were compared in the first, second and third group of 44 successive patients.
The number of RF applications per vein required for isolation and fluoroscopy times demonstrated a significant decrease with experience, and a trend towards lower procedure times in Tierces 2 and 3 was also observed. Atrial atrial fibrillation survival rates at 12 months postablation were Pericardial tamponade requiring percutaneous subxiphoid drainage occurred in 1 patient Tierce 3 as the only significant procedural complication.
Conclusions: A learning curve effect was demonstrated in fluoroscopy times and in the number of RF applications but not in the acute success and in the long-term arrhythmia-free survival with circular multipolar RF ablations.
Abstract Background: Although atrial fibrillation AF ablation is considered a technically challenging procedure, studies on the learning curve of different pulmonary vein isolation PVI techniques are limited. Full Text:.