Fluoroless Rapid Mapping and Catheter Ablation of Intra-atrial Reentry Tachycardia in a Patient with Mustard Operation Using the Ensite™ Precision™ Electroanatomic Mapping System

Catheter ablation of atrial arrhythmias in patients with atrial baffle palliation for dextro-transposition of the great arteries (requiring the Mustard or Senning procedures) can be challenging cases to complete, with long procedure times and high degrees of associated radiation exposure. Many ablation procedures can now be done using the fluoroless technique. The new EnSite™ Precision™ cardiac mapping system (Abbott Laboratories, Chicago, IL, USA) allows for the rapid mapping of arrhythmias and the performance of non-fluoroscopic procedures. This case report describes the use of this system in an adult patient undergoing Mustard operation, to rapidly map and successfully ablate intra-atrial reentry tachycardia with fluoroless technique.