Catheter ablation of an incessant ventricular tachycardia originating from the left aortic sinus cusp in an adolescent with subacute myocarditis

because of recurrent dizziness and palpitations. On admission, several twelve-lead ECG recordings showed an incessant ventricular tachycardia (VT) with an inferior axis and a left bundle branch block pattern (approximately 130 beats/min; Fig. 1a). There was a history of palpitations (for 1 month), but no structural heart disease. The tachycardia was poorly… (More)