Catheter Ablation of Cardiac Arrhythmias

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Arrhythmia Mechanisms Revealed by Ripple Mapping

The introduction of cardiac electroanatomic mapping systems in the mid-1990s has permitted investigators to record intracardiac electrograms (EGMs) with accurate spatial localisation in 3D.1 These 3D mapping systems have enabled the display of the cardiac chambers as an anatomical shell upon which voltage, or activation, information can be displayed. Most commonly, colour is used to represent the variation of a single parameter that has been derived from the EGM at each sampled location.

The Impact of Advances in Atrial Fibrillation Ablation Devices on the Incidence and Prevention of Complications

Catheter ablation is an effective strategy to maintain sinus rhythm in patients with symptomatic atrial fibrillation (AF), which has evolved from a highly specialised technique to a first-line therapy.1–3 The cornerstone of ablation is pulmonary vein isolation (PVI).4 Over the last decade, ablation devices have undergone technical improvements, aiming for better lesion durability and ablation outcomes.

Source Determination in Atrial Fibrillation

Catheter ablation of AF has shown steady growth over the past two decades with a nearly 15 % annual increase in the US.1 This growth can be attributed in large part to four factors: an increase in operators and institutions performing the procedure;2 a steady rise in AF prevalence, which is predicted to reach 12 million in the US by 2030;3 a larger spectrum of AF patients with more complex atrial substrates being offered ablation;

Practical Guide to Ablation for Epicardial Ventricular Tachycardia: When to Get Access, How to Deal with Anticoagulation and How to Prevent Complications

Ventricular tachycardia (VT) is one of the most challenging medical conditions faced by cardiac patients and physicians treating them. Antiarrhythmic medications have limited effectiveness and are frequently poorly tolerated.1–4 Catheter ablation is increasingly used to treat patients successfully.1,5–7 Most VTs can be ablated endocardially but some require epicardial mapping and ablation.

Progress Continues in Our Quest to Cure All Types of Cardiac Arrhythmias with Catheter Ablation

I am pleased to be appointed as AER’s section editor for Clinical Electrophysiology and Ablation.

I look forward to working with authors from throughout the world to put together insightful articles that help clinical electrophysiologists globally to keep up with our rapidly advancing field. From my perspective, the only thing that remains constant in our field is continued progress and change. Together, we are working to continuously improve the techniques and outcomes of catheter ablation.

Atrial Fibrillation Ablation in Patients with Heart Failure: One Size Does Not Fit All

AF is the most common cardiac arrhythmia of clinical significance with an estimated prevalence of >33 million individuals globally.1 AF can be associated with significant symptoms and impaired quality of life of affected patients while also increasing the risk of stroke, heart failure and death.2 AF frequently co-exists with heart failure (HF).