Efficacy and Safety of Catheter Ablation in Patients with Scar Related Ventricular Tachycardia

Background: In individuals with structural heart disease, catheter ablation of ventricular tachycardia (VT) is an important treatment option. The study aimed to evaluate the safety and outcomes of scar related VT ablation in Egyptian population. Patients and methods: this observational study included 22 male patients referred for scar related VT ablation from November 2015 to December 2022, ablation was done under general anesthesia using 3D mapping system in 3 tertiary hospitals in Cairo, Egypt. Clinical, procedural and follow up data were reviewed. Substrate modification in sinus rhythm was the main ablation strategy. Results: Mean age was 56.2±13.9 yrs., 14 patients (63.6%) had a previous myocardial infarction, 6 patients (27.2%) diagnosed as NICM, 2 (9%) patients with previous surgical Fallot repair.20 (90.9%) patients had ICD therapy. Short term outcome, acute procedural success in 23 (76.6%) procedures, VT modification in 2 (6.6%) procedures, failed ablation in 5 (16.6%) procedures. Major complications occurred in 3 procedures (10%).19 patients were included in long term FU, median FU time 24 months (range 6-85 months), no sustained VT or ICD shocks in 9(47.6%) patients, arrhythmia control in 8 (42.1%), 2 patients (10.52%) died. Conclusion: catheter ablation of scar related VT is safe and effective.