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  • Title: The relevance of looking for right bundle branch block in catheter ablation of Ebstein's anomaly.
    Author: Gonzalez-Melchor L, Nava S, Iturralde P, Marquez MF.
    Journal: J Electrocardiol; 2017; 50(6):894-897. PubMed ID: 28666538.
    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.
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