Successful ablation of a concealed parahisian accessory pathway using a remote magnetic navigation system following failure by conventional methods

Objective Using conventional catheters, ablation of concealed parahisian accessory pathways may be difficult and high risk for heart block. Methods and results We describe the case of a concealed parahisian accessory pathway with three prior attempts to ablate using conventional methods (RF and cryotherapy). Using a remote magnetic navigation system, successful ablation occurred following a single RF lesion (total fluoroscopy time 17 min). In contrast to previous attempts, the patient remained asymptomatic during follow-up (12 months). Conclusions This is the first report of successful remote magnetic catheter ablation of a concealed parahisian AP. Magnetic catheter stability during RF application likely contributed to the success of this procedure and may have minimized the risk of AV block.