Ablation of Scar Related Ventricular Tachycardia: Predictors of Success in Ischemic Versus Dilated Cardiomyopathy

Background:Ventricular tachycardia (VT), which most commonly occurs in patients with structural heart disease, can be associated with an increased risk of sudden death. Now, catheterbased RF ablation is the predominant method for VT ablation used worldwide. Reentry is the major mechanism of VT associated with myocardial scarring. Several parameters to predict successful RF ablation of idiopathic VT have been described by other investigators.Objective: the aim of this study was to compare the predictors of success of ventricular tachycardia ablation in ischemic versus non-ischemic cardiomyopathy.Patients and methods: This study was Intervention study (non-controlled trial) and was conducted in cardiology department in Eldemerdash Hospital at Ain Shams University Hospitals. This study was conducted on 23 patients with history of ventricular tachycardia associated with cardiomyopathy either ischemic or non-ischemic.Results: This study included 17 males and 6 females. Failure of the technique was in 34.8% and was success in 65.2%. There was statistically significant association between age of the cases, procedural time, ejection fraction, mapping ablation and technique success among studied cases. But univariate & multivariate analysis showed that age and EF% were statistically significant predictors of technique success among studied cases.Conclusion: Age of the cases and their Ejection fraction were the main significant predictors of technique success among them.