Abstract In many cases, hemodynamic instability limits the ability to perform activation mapping during scar-related ventricular tachycardia (VT). Catecholamines may support blood pressure, but overall perfusion may be suboptimal, and…
Abstracts Catheter ablation can be accomplished with radiofrequency current, cryoablation, direct current shock, and intravascular ethanol. The complications of catheter ablation are related to the target arrhythmia, the anatomy of…
Abstract Long considered a disorder of cardiac repolarization mediated by sodium channel mutations, Brugada Syndrome (BS) is now more clearly a disorder primarily of depolarization due to fibrosis on the…
Abstract Although ventricular tachycardia (VT) usually occurs in patients with structural heart disease, it can also occur in patients with structurally normal hearts. In this scenario, the mechanism of VT…
Abstract The approach to the difficult accessory pathway ablation is, first, to exclude cognitive ablation failure by confirming the tachycardia diagnosis and reevaluating the electrograms. Second, use a systematic approach…
Abstract Atrioventricular nodal reentrant tachycardia (AVRNT) is the most common form of regular supraventricular tachycardia. Although the anatomy and histology of the AV node and its relationship with nearby atrial…
Abstract Free wall locations are the most common positions for accessory pathways (APs) in clinical practice. Right and left free wall APs account for 10% to 20% and 50% to…
Abstract This chapter reviews the etiologies, mechanisms, and therapeutic approaches used for treatment of atrial tachycardias in patients with congenital heart disease (CHD). Intraatrial reentrant tachycardia (IART) is a prevalent…
Abstract Atriofascicular accessory pathways are rare decremental bypass tracts with unidirectional antegrade conduction. They most commonly connect the right atrium to the right bundle. In this chapter, we will discuss…
Abstract Posteroseptal accessory pathways (APs) are actually not septal but reside in a complex region bordering the right atrium, right ventricle, left ventricle, left atrium and coronary sinus and its…
