This is a non-surgical technique, which eliminates parts of the heart’s abnormal electrical pathway, which is causing a rapid heart rhythm. During this treatment, an electrode catheter is inserted into the heart. The catheter is positioned so that it lies close to the abnormal electrical pathway and then radio-frequency energy passes through the catheter. The tip of the catheter heats up in order to eliminate small areas of heart tissue that contain the abnormal electrical pathway. If successful, radio-frequency ablation may cure the problem of a rapid heart rhythm.