Right ventricular outflow tract
(RVOT) ventricular tachycardias (VT) occur in the absence of structural heart
disease and are called idiopathic ventricular arrhythmias. These arrhythmias
are thought to be produced by adenosine-sensitive, cyclic AMP mediated,
triggered activity and are commonly observed in adolescents and young adults. In
the ECG, they appear with a wide QRS complex, a left bundle branch block
morphology and, usually, an inferior QRS axis. In the last few years, there has
been an increasing number of reports suggesting the possibility of a curative
treatment of RVOT VT by means of catheter ablation. This paper reviews the rate
of cure of such arrhythmias by discussing the effects of catheter ablation on
symptoms, arrhythmia detection, possibility of induction, and short- and
long-term follow-up studies.
Credits: Dr. Abdel Fuenmayor