A 70-year-old man with recurrent atrial fibrillation (AF) underwent transcatheter radiofrequency ablation after an earlier unsuccessful attempt. Although typical AF triggers were ablated, the patient's condition persisted, leading to the identification of the interatrial septum (IAS) as the probable source of the tachycardia trigger. Given the depth and thickness of the IAS, traditional radiofrequency ablation proved ineffective. However, using the alternative method of bipolar radiofrequency catheter ablation (B-RFCA), the atrial tachycardia was successfully terminated. B-RFCA demonstrates potential for effectively terminating tachycardias originating from deep intramural locations, suggesting its potential as a pivotal technique for complex cases with septal atrial tachycardia.
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