title: [Radiofrequency transcatheter ablation in atrial tachycardia].
abstract: Incessant atrial tachycardia is an infrequent arrhythmia. Specially difficult to treat medically. Radiofrequency catheter ablation has been used successfully to cure a variety of supraventricular tachycardias. The purpose of this work is to report our initial experience in the treatment of atrial tachycardia. Ten patients, mean age 28.7 +/- 15 year with conventional drug-resistant symptomatic atrial tachycardia were treated with selective ablation of the focus using radiofrequency energy. It was found an abnormal automaticity in 10 tachycardias and in only one patient intra-atrial reentrant was supported. Radiofrequency energy was successful in 10 of 11 tachycardias with a mean of 9.3 +/- 6.8 applications using the technique of local atrial electrogram activation time with a mean value of -54 +/- -31 milliseconds at the successful ablation sites. No complications were observed and one patient had an early clinical recurrence. All patients with successful ablation are symptom-free, in sinus rhythm and without antiarrhythmic medications after 1 to 28 months of follow-up. Our initial experience support that radiofrequency catheter ablation is a safe and effective therapeutic option for incessant atrial tachycardia.
authors.affiliation: Clínica de Arritmias y Marcapasos, Hospital de Cardiología, Centro Médico Nacional Siglo XXI, México, D.F.
authors.forename: E
authors.initials: E
authors.lastname: Velázquez Rodríguez
authors.forename: J A
authors.initials: JA
authors.lastname: Morales Hernández
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D017115:Catheter Ablation; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008297:Male; D013610:Tachycardia / Q000503:physiopathology / Q000601:surgery*
vernacular_title: Ablación transcatéter con radiofrecuencia en taquicardia auricular.