Abstract
We describe a patient who underwent radiofrequency (RF) catheter ablation of cavo-tricuspid isthmus-dependent atrial flutter (AFL). Extensive ablation at the isthmus failed to terminate the AFL. A coronary sinus (CS) diverticulum arising from the proximal portion of the middle cardiac vein was found near the isthmus. An RF energy application at the bottom of the CS diverticulum resulted in completion of a bidirectional block line at the isthmus, as well as AFL termination.
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Igarashi, M., Tada, H., Sekiguchi, Y. et al. Successful radiofrequency catheter ablation of common atrial flutter at the bottom of a coronary sinus diverticulum. Heart Vessels 27, 643–647 (2012). https://doi.org/10.1007/s00380-012-0232-y
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DOI: https://doi.org/10.1007/s00380-012-0232-y