AF Ablation Guided by Spatiotemporal Electrogram Dispersion Without Pulmonary Vein Isolation

The use of intracardiac electrograms to guide atrial fibrillation (AF) ablation has yielded conflicting results.The authors evaluated the usefulness of spatiotemporal dispersion, a visually recognizable electric footprint of AF drivers, for the ablation of all forms of AF.The authors prospectively enrolled 105 patients admitted for AF ablation. AF was sequentially mapped in both atria with a 20-pole PentaRay catheter. The authors tagged and...