title: Idiopathic Ventricular Tachycardia: Transcatheter Ablation or Antiarrhythmic Drugs?
abstract: BACKGROUND
  Ventricular tachycardia or frequent premature ventricular contractions (PVCs) can occur in the absence of any detectable structural heart disease. In this clinical setting, these arrhythmias are termed idiopathic. Usually, they carry a benign prognosis and any potential ablative intervention is carried out if patients are highly symptomatic or, more importantly, if frequent ventricular arrhythmias can lead to ventricular dysfunction.
  
  
  METHODS
  In this paper, different forms of idiopathic ventricular tachycardia are reviewed. Outflow tract ventricular tachycardia from the right ventricle is the most frequent form of the so-called idiopathic ventricular tachycardia. Other forms of idiopathic ventricular arrhythmias include ventricular tachycardia/PVCs arising from tricuspid annulus, from the mitral annulus, inter-fascicular ventricular tachycardia and papillary muscle ventricular tachycardia. When interventional treatment is deemed necessary, detailed mapping ( earliest activation during VT/PVC, pace mapping ) is crucial as to identify the successful ablation site. Catheter ablation more than antiarrhythmic drug treatment is usually highly effective in eliminating idiopathic ventricular arrhythmias and providing prevention of recurrence.
  
  
  CONCLUSIONS
  Idiopathic VTs are not considered life-threatening arrhythmias and, prevention of recurrences is often achieved by means of catheter ablation that provides an improvement of quality of life. The overall acute success rate of catheter ablation is about 85-90% with a long-term prevention of arrhythmia recurrence of about 75-80%. It is advisable that the procedure is carried out by electrophysiologists with expertise in VT catheter ablation and extensive knowledge of cardiac anatomy as to ensure a high success rate and reduce the likelihood of major complications.
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: Tondo
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Corrado
authors.initials: C
authors.lastname: Carbucicchio
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Dello Russo
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Benedetta
authors.initials: B
authors.lastname: Majocchi
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Martina
authors.initials: M
authors.lastname: Zucchetti
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Francesca
authors.initials: F
authors.lastname: Pizzamiglio
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Bologna
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Fabio
authors.initials: F
authors.lastname: Cattaneo
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Daniele
authors.initials: D
authors.lastname: Colombo
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Eleonora
authors.initials: E
authors.lastname: Russo
authors.affiliation: Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
authors.forename: Michela
authors.initials: M
authors.lastname: Casella