Syncope is a frequent occurrence in the elderly and cardiac causes are common. Therefore, accurate diagnosis is essential since specific treatments are often required. We present an 85-year-old woman with recurrent syncope secondary to sinus node reentrant tachycardia (SNRT), which was successfully treated by radiofrequency ablation. This is the first reported description of SNRT and its successful treatment in Ebstein's anomaly. Atrial arrhythmias and accessory atrioventricular bypass pathways are common in Ebstein's anomaly and are briefly discussed. Our patient is alive at age 87, which is exceptional for Ebstein's anomaly.
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