Left Idiopathic Ventricular Tachycardia Amenable to Radiofrequency Ablation

Abstract

An 18-year-old gentleman with a 5-year-long history of palpitations was referred for radiofrequency ablation of a wide-QRS complex tachycardia. He admitted having 2-3 tachycardia episodes per year, which had recently increased in frequency despite therapy with a beta blocker, recently combined with the antiarrhythmic medication flecainide (100 mg bid). The morphology of the tachycardia on the 12-lead electrocardiogram indicated a right bundle branch block with a left axis deviation at a cycle length of 290 ms (207 bpm) ( Fig . 1A). Cardiac work-up revealed a normal heart anatomy by echocardiography, while a treadmill test was normal with no provokable arrhythmia... (excerpt)