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Titolo:
Long-term efficacy of radiofrequency catheter ablation in atrial tachycardia
Autore:
Vacca, M; Saenz, L; Mont, L; Rubin, JM; Madariaga, R; Brugada, J;
Indirizzi:
Hosp Clin, Inst Enfermedades Cardiovasc, Unidad Arritmias, Barcelona 08036, Spain Hosp Clin Barcelona Spain 08036 Unidad Arritmias, Barcelona 08036, Spain
Titolo Testata:
REVISTA ESPANOLA DE CARDIOLOGIA
fascicolo: 1, volume: 54, anno: 2001,
pagine: 29 - 36
SICI:
0300-8932(200101)54:1<29:LEORCA>2.0.ZU;2-M
Fonte:
ISI
Lingua:
SPA
Soggetto:
INTRAATRIAL REENTRANT TACHYCARDIA; ELECTROPHYSIOLOGICAL CHARACTERISTICS; TRANSCATHETER ABLATION; ADULT PATIENTS; ARRHYTHMIAS; MECHANISMS;
Keywords:
atrial tachycardia; ablation; radiofrequency;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Brugada, J Hosp Clin, Inst Enfermedades Cardiovasc, Unidad Arritmias, Villarroel 170,Barcelona 08036, Spain Hosp Clin Villarroel 170 Barcelona Spain08036 na 08036, Spain
Citazione:
M. Vacca et al., "Long-term efficacy of radiofrequency catheter ablation in atrial tachycardia", REV ESP CAR, 54(1), 2001, pp. 29-36

Abstract

Introduction and objectives. Radiofrequency ablation has shown to be an effective treatment for supraventricular tachycardias including flutter and atria[ tachycardia, however the clinical information available on atrial tachycardia is limited. The aim of this study was to evaluate the immediate and long term effectiveness of radiofrequency ablation in patients with atrial tachycardia and to establish predictors of effectiveness and arrhythmia recurrence. Methods. We analyzed a series of 126 procedures of atrial tachycardia ablation in 117 patients (69% women) with a mean age of 50 +/- 19 years. Results. Ninety-one percent of the foci were located in the right atrium. A mean of 6 applications were necessary to achieve an efficacy of 74% during the first procedure with a total of 80%. The only predictor of ablation success was the number of foci being smaller in multifocal compared to unifocal (p < 0.01) whereas for recurrences a less premature electrogram at the application point (p = 0.02) was predictive of ablation success. Over a follow-up of 34 +/- 19 months 7.4% of patients had recurrent atrial tachycardia. The probability of recurrence at one year calculated by the Kaplan-Meiermethod was 12%. Seventy-one percent of the recurrences occurred during thefirst 3 months after ablation. Conclusions. Ablation is an effective, safe procedure for short and long term treatment of patients with atrial tachycardia. Effectiveness depends onthe number of foci while the recurrence rate is related to the prematurityof atrial electrogram at the application point.

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Documento generato il 10/07/20 alle ore 18:35:28