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,…
Abstract Bypass tracts (BTs) are remnants of the atrioventricular (AV) concaused by incomplete embryological development of the AV annuli and failure of the fibrous separation between the atria and ventricles….
Abstract A “supraventricular” origin of a tachycardia implies the obligatory involvement of one or more cardiac structures above the bifurcation of the His bundle (HB), including atrial myocardium, atrioventricular node…
Abstract Wide complex tachycardia (WCT) is a rhythm with a rate of more than 100 beats/min and a QRS duration of more than 120 milliseconds. Several arrhythmias can manifest as…
Abstract A working definition of an atypical bypass tract (BT) is a conduction pathway that bypasses all or part of the normal conduction system but is not a rapidly conducting…
