Useful clinical features for the selection of ideal patients with strial fibrillation for mapping and catheter ablation

Abstract

Objective -To identify useful clinical characteristics for selecting patients eligible for mapping and ablation of atrial fibrillation. Methods -

Ablação da fibrilação atrial por cateter com radiofreqüência guiada por mapeamento espectral endocárdico dos "ninhos de FA" em ritmo sinusal

“…It was possible to observe that the more extensive the ablation of the AF nests, the lower the possibility of inducing this arrhythmia through stimulation. Additionally, a large number of these patients (88%) remained without AF or had controlled AF during follow-up, despite the 39% of cases with persistent and permanent AF, types that are normally associated to poorer outcomes 7 . These data suggest that, apparently, the lower the number of AF nests, more stable the atrial walls become, from an electrical point of view.…”

Isolamento das veias pulmonares para tratamento da fibrilação atrial paroxística: resultados clínicos após um único procedimento

“…The electrophysiologic observation that atrial fibrillation is triggered by ectopic foci frequently originated in the pulmonary veins opened a new era in radiofrequency catheter ablation. However, just few patients presented frequent spontaneous ectopic beats enough to allow mapping of specific foci [2][3][4][5] . The attempts to apply the potential clinical benefits of AF triggers by catheter ablation presented major limitations.…”