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Because the anatomic features of the cavotricuspid isthmus (CTI) are complex, radiofrequency (RF) energy requirements for CTI ablation may vary at each point within the CTI. Conventionally, multiple-site mapping has been required for determining CTI conduction block. The purpose of this study was to develop a more efficacious method for ablation of isthmus-dependent atrial flutter. Forty consecutive...
Objective: The purpose of this article is to review the importance of thoracic veins in the maintenance of sustained (non-paroxysmal) atrial fibrillation (AF). Methods: Thoracic veins, including the pulmonary veins (PVs), vein of Marshall (VOM) and the superior vena cava (SVC), have muscle sleeves that connect to the atria. It is well known that electrical activities can be recorded within these venous...
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