Fibrilación auricular focal: características clínicas y resultado de la ablación con radiofrecuencia / Results of radiofrequency ablation in focal atrial fibrillation
Rev. méd. Chile
;
130(5): 482-494, mayo 2002. ilus, tab
Artículo
en Español
| LILACS
| ID: lil-317368
ABSTRACT
Background:
Atrial fibrillation can originate in arrhythmogenic foci coming from the pulmonary veins. Patients with atrial fibrillation, initiated from triggering foci, can be treated with radiofrequency ablation.Aim:
To report the results of radiofrequency ablation in patients with focal atrial fibrillation. Patients andmethods:
Thirteen patients with focal atrial fibrillation (8 male, aged 19 to 60 years old) are reported. Twelve had frequent crises refractory to antiarrhythmic drugs. Two had also flutter and tachycardia. One had a permanent atrial fibrillation lasting five years. Two had ventricular dysfunction and left atrial dilatation. The triggering focus was identified during the electrophysiological study, by the precocity of the potential that initiated the atrial fibrillation.Results:
All patients had early atrial extrasystolic beats, isolated or repetitives, that preceded atrial fibrillation. During the electrophysiological study, 18 foci (3 in the right and 15 in the left atrium all in pulmonary veins) were identified. Radiofrequency ablation had immediate success in 11 patients. In 5, a flutter was also ablated. One patient had a sinus dysfunction after the procedure and atrial fibrillation was not eliminated. In this and other patient in whom the procedure failed, a pacemaker was implanted and the atrioventricular node was blocked. In a follow up, ranging from 4 to 31 months, eight patients are asymptomatic and 3 recidivated. No complications have been detected.Conclusions:
Patients with focal atrial fibrillation have common clinical and electrocardiographic features. Radiofrequency ablation of the triggering focus is possible and effective in most cases
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Fibrilación Atrial
/
Ablación por Catéter
Tipo de estudio:
Estudio pronóstico
Límite:
Femenino
/
Humanos
/
Masculino
Idioma:
Español
Revista:
Rev. méd. Chile
Asunto de la revista:
Medicina
Año:
2002
Tipo del documento:
Artículo
País de afiliación:
Chile
Institución/País de afiliación:
Universidad de Chile/CL
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