The interventional treatment of arrhythmias with catheter ablation have become the first line therapy for a significant number of tachyarrithmias, offering curative treatment in the majority of them. Ventricular arrhythmias form a group of great interest for the interventional electrophysiologist, because in contrast to the traditional thought, today we can identify some sub-groups of monomorphic sustained ventricular tachycardia (MSVT) with very good percentages of cure, whereas others like those with ischemic etiology ablation is still a palliative procedure. In this paper we will review the different types of MSVT, its etiology and therapeutic options from the interventionist point of view.