THERAPY OF IDIOPATHIC VENTRICULAR-TACHYCARDIA

''Idiopathic'' Ventricular Tachycardia. Idiopathic ventricular tachyca rdias occur in ''normal'' hearts and are generally benign arrhythmias, They can arise from either the left or right ventricle, and the origi n is usually predictable from the surface EGG. These arrhythmias are p roduced by diverse mechanisms, When treatment is indicated, empiric ph armacotherapy can be successful. However, if drugs are not tolerated o r fail, radiofrequency (RF) ablation may be indicated. During electrop hysiologic study, arrhythmia mechanism can be determined, and pace and activation mapping can be used to localize the site of ventricular ta chycardia origin to direct application of RF lesions. RF ablative ther apy has been associated with high success rates.