fatores preditores de fibrilação atrial após ablação do flutter atrial típico factores predictores de fibrilación atrial tras ablación del flutter atrial típico predictors of atrial fibrillation after ablation of typical atrial flutter
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Abstract
FUNDAMENTO: La ocurrencia de fibrilación atrial (FA) tras la ablación con éxito del flutter atrial istmo cavotricuspídeo (FLA-ICT) dependiente consiste en un evento de importancia clínica. Los factores predictores de esta ocurrencia todavía son controvertidos. OBJETIVO: Determinar la incidencia de FA y los factores predictores para su ocurrencia en los pacientes sometidos a la ablación del flutter atrial istmo cavotricuspídeo (FLA-ICT) dependiente. MÉTODOS: Cincuenta y dos pacientes portadores de FLA-ICT se sometieron a la ablación en el período de enero de 2003 a marzo de 2004, en el InCor del Hospital de Clínicas de la Facultad de Medicina de la Universidad de São Paulo. RESULTADOS: Durante el seguimiento promedio de 26,2 (± 9,2) meses, 16 (30,8%) pacientes presentaron FA. El análisis univariado reveló dos variables clínicos como predictoras de ocurrencia de FA después de la ablación del FLA-ICT mayor o igual a tres años (RR: 3,00; P = 0,020). En el análisis multivariado, estos factores fueron variables independientes asociadas a la ocurrencia de FA tras ablación del FLA-ICT. CONCLUSIÓN: La FA se observa frecuentemente durante el seguimiento de los pacientes tras la ablación de FLA-ICT dependiente. El FLA-ICT persistente y la historia de arritmia mayor que tres años son factores predictores para la ocurrencia de FA durante el seguimiento clínico.
BACKGROUND: The occurrence of atrial fibrillation (AF) after successful ablation of cavotricuspid 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.
| Reference Key |
melo2009arquivosfatores
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| Authors | ;Sissy Lara de Melo;Maurício Scanavacca;Cristiano Pisani;Rodrigo Nascimento;Francisco Darrieux;Denise Hachul;Carina Hardy;Eduardo Sosa |
| Journal | revista cubana de ciencias informáticas |
| Year | 2009 |
| DOI |
10.1590/S0066-782X2009001100008
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