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.


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.
Davis
Darryl R
DR
University of Ottawa Heart Institute, Rm. H350 40 Ruskin St., Ottawa, ON K1Y 4W7, Canada.
Tang
Anthony S
AS
Birnie
David H
DH
Gollob
Michael H
MH
D017115:Catheter Ablation / Q000379:methods*; D017679:Cryotherapy; D005260:Female; D006329:Heart Conduction System / Q000002:abnormalities* / Q000601:surgery*; D006801:Humans; D008280:Magnetics; D008875:Middle Aged; D019233:Retreatment; D012371:Robotics / Q000379:methods*; D017211:Treatment Failure