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Revista chilena de pediatría

versión impresa ISSN 0370-4106


SCIEGATA, Alberto et al. Radioablation for paroxysmal SVT (supraventricular tachycardia) without cardiopathy in children and adolescents. Rev. chil. pediatr. [online]. 2003, vol.74, n.1, pp.95-104. ISSN 0370-4106.

Introduction: Radiofrequency catheter ablation provides curative therapy for several tachyarrhythmias, avoiding repeated crisis, as well as the chronic use of antiarrythmic drugs, with a less aggressive and costly procedure than surgery. This article retrospectively evaluates our experience with such method in children and adolescents highly symptomatic, with paroxysmal supraventricular tachycardia and structurally normal hearts. Population: The study consisted in 56 consecutive patients aged 6 to 18 years (13 ± 3, X: 13 y) with recurrent tachycardia in spite of pharmacological treatment, 3 of them with syncope and sudden death. Material & methods: Electrophysiology diagnosis included: Reentrant tachycardia using an accessory pathway in 48 patients, 34 associated with Wolff-Parkinson-White syndrome, and reciprocant nodal tachycardia in 8 patients. Results: Ablation was primaryly successful in 52 patients (93%). Total procedural time was x: 226 ± 43, X: 210 minutes; fluoroscopy lasted x: 42 ± 33, X: 40 minutes and radiofrequency pulses averaged 4 ± 3, X: 2. Complications presentes in only 3 patients (5,4%). During a follow-up of 0.5 to 7.5 years (x: 3.3 ± 1.7, X: 2.5), 10 patients suffered recurrences, being successfully re-ablationed 6/6 of them. The procedure was considered curative in 48/56 patients (86%). Conclusions: Our preliminary experience with radiofrequency ablation in this group was largely satisfactory, with high effectivity, few morbidity and no mortality

Palabras clave : radiofrequency ablation; supraventricular tachycardia in children.

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