SUCCESSFUL CATHETER ABLATION OF AN INFEROSEPTAL ACCESSORY PATHWAY WITHIN THE CORONARY SINUS IN A PATIENT WITH A PREVIOUSLY UNSUCCESSFUL ATTEMPT AT SURGICAL INTERRUPTION - CORONARY SINUS ABLATION FOR WOLFF-PARKINSON-WHITE SYNDROME

In a patient with Wolff-Parkinson-White syndrome and a right inferosep tal accessory pathway who had had a previously unsuccessful surgical a ttempt at accessory pathway ablation, the accessory pathway was found to be adjacent to a branch of the coronary sinus. Radiofrequency energ y was delivered within this branch to ablate the pathway successfully. This demonstrates an alternative approach to the more common method o f radiofrequency ablation of accessory pathways from a tricuspid or mi tral annular location.