oa Cardiovascular Journal of Africa - Radiofrequency catheter ablation of 'idiopathic' ventricular tachycardias



Radiofrequency (RF) catheter ablation of an 'idiopathic' ventricular tachycardia was attempted in 18 patients. Eleven of them suffered from a ventricular outflow tract tachycardia (right ventricular outflow tract in 10 cases and left ventricular outflow tract in 1) and 7 from a fascicular left ventricular tachycardia (posterior fascicle in 6 cases and anterior fascicle in 1). The ablation was successful in all but 1 patient, who had requited a repeat procedure. All patients in whom ablation was successful remained asymptomatic without any treatment during a mean of 13.7 (SD 11.3) months of follow-up. RF catheter ablation should be considered a first-line treatment in all symptomatic patients with ventricular outflow tract tachycardia or fascicular left ventricular tachycardia.


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