Abstract Dilated cardiomyopathy (DCM) is the most common type of cardiomyopathy and is often viewed as a “final common pathway” of numerous types of cardiac injuries. The diagnosis of nonischemic…
Abstract Ventricular tachycardia (VT) originating from the subepicardium is an important cause of failure of endocardial approaches to VT ablation. Mapping arrhythmia foci or circuits that are deep within the…
Abstract Idiopathic fascicular ventricular tachycardia (VT) is a reentrant tachycardia involving the left fascicular Purkinje system. The reentry circuit is most commonly (90%) located in the territory of the left…
Abstract In general, patients with congenital heart disease (CHD) are prone to two forms of ventricular tachyarrhythmias: (1) macroreentrant monomorphic ventricular tachycardia (VT) related to scar or prosthetic materials used…
Abstract The majority of sudden cardiac death (SCD) events are associated with structural heart disease; however, in 10% to 20% of SCDs, no cardiac structural abnormalities are detectable. The lack…
Abstract Coronary heart disease is the most common cause of clinically documented ventricular tachycardia (VT). The majority of sustained monomorphic VTs in patients with prior myocardial infarction (MI) are caused…
Abstract Reported rates of major complications following contemporary catheter ablation procedures vary by as much as five- to eightfold between various types of ablation procedures, ranging from 0.8% for supraventricular…
Abstract Arrhythmogenic right ventricular cardiomyopathy (ARVC), also referred to as “arrhythmogenic cardiomyopathy,” is an inherited desmosomal cardiomyopathy with incomplete penetrance and variable expressivity. ARVC is characterized by ventricular arrhythmias and…
Abstract Hypertrophic cardiomyopathy (HCM) is characterized by a thickened but nondilated left ventricle in the absence of any other cardiac or systemic condition capable of producing the magnitude of hypertrophy…
Abstract Bundle branch reentrant (BBR) ventricular tachycardia (VT) is a macroreentrant VT with a well-defined reentry circuit, incorporating the right and left bundle branches as obligatory limbs of the circuit,…
