[Catheter ablation of ectopic incessant atrial tachycardia using radiofrequency. Reversion of tachycardiomyopathy].
A 8-year-old female patient with refractory incessant atrial tachycardia, very symptomatic and with left ventricular ejection fraction of 0.25. Electrophysiological study and endocardial mapping localized the site of the origin of atrial tachycardia in the superior right atrium. In this site 2 applications of radiofrequency current (25V, 20 and 50 seconds) resulted in termination of the atrial tachycardia. She was discharged off antiarrhythmic drugs and after 2 months ejection fraction was 0.52. She was completely asymptomatic 6 months after ablation procedure.
de Paola
A A
AA
Escola Paulista de Medicina, São Paulo.
Mendonça
A
A
Balbão
C E
CE
Tavora
M Z
MZ
da Silva
R M
RM
Hara
V M
VM
Guiguer Júnior
N
N
Vattimo
A C
AC
Souza
I A
IA
Portugal
O P
OP
D017115:Catheter Ablation / Q000379:methods*; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D013612:Tachycardia, Ectopic Atrial / Q000175:diagnosis / Q000601:surgery*
Ablação por cateter de foco de taquicardia atrial ectópica incessante utilizando radiofreqüência. Reversão de taquicardiomiopatia.