Background: The occurrence of atrial fibrillation (AF) after successful ablation of cavotricuspi isthmus-dependent atrial flutter (CTI-AFL) is an important medical event, but predictors of this event are still controversial. Objective: To determine the incidence of AF and its predictors in patients undergoing ablation of cavotricuspid isthmus-dependent atrial flutter (CTI-AFL). Methods: Fifty two patients with CTI-AFL underwent ablation from January 2003 to March 2004, in Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo. Results: During the mean follow-up period of 26.2 ± 9.2 months, 16 (30.8%) patients presented AF. The univariate analysis revealed two clinical variables as predictive of the occurrence of AF after ablation of CTI-AFL for three years or longer (RR: 3.00; p = 0.020). In the multivariate analysis, these factors were independent variables associated with the occurrence of AF after ablation of CTI-AFL. Conclusion: AF is frequently observed during the follow-up of patients undergoing ablation of CTI-AFL. Persistent CTI-AFL and history of arrhythmia for more than three years are predictors of the occurrence of AF during the clinical follow-up.
CITATION STYLE
De Melo, S. L., Scanavacca, M., Pisani, C., Nascimento, R., Darrieux, F., Hachul, D., … Sosa, E. (2009). Predictors of atrial fibrillation after ablation of typical atrial flutter. Arquivos Brasileiros de Cardiologia, 93(5). https://doi.org/10.1590/S0066-782X2009001100008
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