END - VT Cohort Study

ICD, Implantable Defibrillator User, Ventricular Tachycardia

Ventricular tachycardia (VT) is a life-threatening cardiac rhythm disturbance which leads to sudden cardiac death (SCD), ventricular fibrillation, electrical storm, hemodynamic collapse, and syncope. VT patients with cardiomyopathy (diseased/scarred cardiac muscle) have the highest risk of SCD (\<1-4%) and recurrent VTs (15-35%). Although an implantable cardiac defibrillator (ICD) is the most effective treatment option to prevent SCD, it does not eliminate it. Without VT prevention, recurrent VT and ICD shocks may increase the risk of heart failure and death. The primary objective is to determine the optimal treatment strategy to maximize event-free survival among cardiomyopathy patients with ventricular tachycardia (VT) by the creation of a prospective, multicenter, longitudinal cohort. Also, the investigators will evaluate the epidemiology of VT, adherence to guidelines, safety, effectiveness, and cost-effectiveness of current treatment options for secondary prevention of VT in the real-world Canadian VT population.

The END-VT study is a multicenter, prospective, longitudinal real-world cohort study of patients with cardiomyopathy-related VT. Patients with ischemic and non-ischemic cardiomyopathy are followed from their first VT event till at least 3 years of follow-up or death, whichever is first. Outcomes of VT events are captured by ICD remote monitoring and are adjudicated by experienced clinical investigators blinded to the center and treatments. The primary objective of END-VT is to determine the optimal treatment strategy to maximize event-free survival among cardiomyopathy patients with VT. The investigator will also assess the real-world burden of disease, treatment challenges, adherence to guidelines, sex differences, and safety, effectiveness, and cost-effectiveness of VT treatments.

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