Visualization of an accessory pathway by 3D high-density mapping: A case of Ebstein’s anomaly with atrioventricular reentrant tachycardia

Abstract Radiofrequency catheter ablation (RFCA) is the primary choice for treating patients with an accessory pathway and atrioventricular reentrant tachycardia. However, using RFCA to treat a right-sided accessory pathway in a patient with Ebstein’s anomaly can be difficult due to challenges in locating the electro-physiologic atrioventricular groove. We report a case of atrioventricular reentrant tachycardia in a patient with Ebstein’s anomaly and a right-sided accessory pathway that was successfully treated using RFCA and 3D high-density mapping. RFCA and 3D mapping may be useful in the management of such cases and may aid in improving the prognosis of patients.