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…
Abstract Safe and successful catheter ablation of superoparaseptal (previously called anterior septal ) and midseptal accessory pathways (APs)—those for which ablation poses the highest risk of damaging the normal conduction…
Abstract Atrial substrate modification is required for a successful outcome in a minority of patients with paroxysmal atrial fibrillation (AF), and in most patients with persistent AF. Substrate modification is…
Abstract Pulmonary vein isolation (PVI) represents the cornerstone of current catheter ablation techniques for the treatment of atrial fibrillation (AF), with significantly improved efficacy compared with antiarrhythmic drug therapy as…
Abstract Nonpulmonary vein (non-PV) “triggers” can be identified in 10% to 33% of unselected patients with atrial fibrillation (AF). Compared with paroxysmal AF, the incidence of non-PV foci is higher…
