[The catheter ablation of tachyarrhythmias. The experience of the Hospital de Santa Cruz].
BACKGROUND
First results of tachyarrhythmia's direct current (DC) and radiofrequency (RF) catheter ablation in Portugal (St. Cruz Hospital, Carnaxide).


METHODS
Retrospective analysis of the first 20 patients (P) submitted to catheter ablation in our Center: 11 males and 9 females, aging 36 years (SD 14), with drug-refractory symptomatic tachyarrhythmias. DC ablation was used in the first case and RF current in the nineteen subsequent P.


RESULTS
Accessory pathway RF ablation: 92% successful rate (12/13 P); AV nodal modification: fast pathway--1 P (DC ablation), slow pathway--3 P (RF ablation) with one case of late clinical recurrence; two successful His bundle ablation (in paroxysmal atrial flutter/fibrillation) one standard right side and other from left ventricle outflow; one successful RF ablation of a verapamil-sensitive ventricular tachycardia. The mean follow-up was 3.5 months (1 to 7 months for RF and 20 months for DC ablation).


CONCLUSIONS
Catheter ablation (mainly RF current) is highly effective in tachyarrhythmia's suppression, with 90% global success in our experience without morbidity.
Adragão
P
P
Serviço de Cardiologia, Hospital de Santa Cruz.
Martins
D
D
Machado
F P
FP
Bonhorst
D
D
Seabra-Gomes
R
R
D000293:Adolescent; D000328:Adult; D000368:Aged; D017115:Catheter Ablation / Q000295:instrumentation / Q000379:methods / Q000706:statistics & numerical data; D005260:Female; D006329:Heart Conduction System / Q000002:abnormalities / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D011174:Portugal / Q000453:epidemiology; D012008:Recurrence; D012189:Retrospective Studies; D013610:Tachycardia / Q000453:epidemiology / Q000601:surgery*
Ablação por cateter de taquiarritmias. Experiência do Hospital de Santa Cruz.