Abstract
This report describes a 23 year old woman with a lifelong history of permanent junctional reciprocating tachycardia refractory to conventional antiarrhythmic medications who was successfully treated with closed chest, transvenous selective ablation of a posteroseptal bypass tract. Two 100 J (stored) direct-current shocks were delivered to the region of the os of the coronary sinus using a quadripolar catheter positioned in the coronary sinus. At a 2 month follow-up interval, the patient is asymptomatic without recurrence of the tachycardia. It is concluded that in patients with permanent junctional reciprocating tachycardia, selective catheter ablation of a posteroseptal accessory pathway is a feasible alternative to a difficult pharmacologic regimen or to ablative surgery.
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