ABSTRACT
Ventricular tachycardia most often occurs in the context of structural heart disease, such as coronary artery disease, severe valvular heart disease, or idiopathic dilated cardiomyopathy. Various classifications have been proposed, based on different criteria such as clinical presentation, underlying mechanism, site of origin, and response to pharmacological interventions. Clinical presentations include repetitive monomorphic ectopy, nonsustained monomorphic Ventricular tachycardia, and exercise-induced sustained Ventricular tachycardia. A systematic approach to electrocardiographic analysis is helpful for predicting the likely site of arrhythmia origin, which is important for preprocedural planning and patient counseling regarding risks and success rates. The crux of the heart is an epicardial location near the junction of the middle cardiac vein and the coronary sinus.
