Radiofrequency catheter ablation of idiopathic left ventricular tachycardia in young adults.

We performed radiofrequency catheter ablation of idiopathic ventricular tachycardia arising from the left ventricle, in two 15-year-old patients. Activation mapping during induced tachycardia revealed an origin from the mid-septal region of the left ventricle in both patients. Local activation times and pacemapping were used to select the target site for successful ablation. At follow-up, both patients are without symptoms.