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Bidirectional bundle branch reentry tachycardia associated with Ebstein's anomaly: cured by extensive cryoablation of
J D Andress1, T J Vander Salm, S K Huang
1Department of Medicine, University of Massachusetts Medical Center, Worcester 01655.
Pacing and Clinical Electrophysiology : PACE
|November 1, 1991
Abstract:
A 30-year-old woman with Ebstein's anomaly presented with a sustained, wide QRS complex tachycardia exhibiting a left bundle branch block morphology. Serial electrophysiological studies revealed right and left bundle branch reentry tachycardias refractory to many conventional antiarrhythmic drugs. Radiofrequency and direct current catheter ablation of the right bundle branch failed to control the tachycardias. The patient subsequently underwent extensive endocardial cryoablation to the right bundle branch resulting in cure of her arrhythmia.