Laila Gonzalez-Melchor1, Santiago Nava2, Pedro Iturralde2, Manlio F Marquez2. 1. University Clinical Hospital of Santiago de Compostela Santiago de Compostela, A Coruña, Spain. Electronic address: dra.glezmelchor@gmail.com. 2. Instituto Nacional de Cardiologia Dr. Ignacio Chavez, Mexico City, Mexico.
Abstract
INTRODUCTION: Ebstein's anomaly is the most commonly occurring congenital defect associated with the Wolff-Parkinson-White syndrome. In patients with Ebstein's anomaly and supraventricular tachycardia, the absence of right bundle branch block (RBBB) in sinus rhythm is a highly sensitive and specific indicator of the presence of an ipsilateral accessory AP. CASE: We present an electrophysiology case of a patient with Ebstein's anomaly and 3 ipsilateral accessory pathways. After ablation was performed, RBBB was evident. CONCLUSION: In patients with Ebstein's anomaly and supraventricular tachycardia, the absence of a RBBB pattern in the surface ECG after RFCA should raise suspicion for the presence of multiple accessory pathways.
INTRODUCTION:Ebstein's anomaly is the most commonly occurring congenital defect associated with the Wolff-Parkinson-White syndrome. In patients with Ebstein's anomaly and supraventricular tachycardia, the absence of right bundle branch block (RBBB) in sinus rhythm is a highly sensitive and specific indicator of the presence of an ipsilateral accessory AP. CASE: We present an electrophysiology case of a patient with Ebstein's anomaly and 3 ipsilateral accessory pathways. After ablation was performed, RBBB was evident. CONCLUSION: In patients with Ebstein's anomaly and supraventricular tachycardia, the absence of a RBBB pattern in the surface ECG after RFCA should raise suspicion for the presence of multiple accessory pathways.