Left-Sided Ablation via a Patent Foramen Ovale
The patient was a 50-year-old man undergoing radiofrequency catheter ablation of a left-sided accessory pathway. During the positioning of the His-bundle catheter, a patent foramen ovale was discovered. The ablating catheter was passed from the right atrium to the left atrium, through the foramen ovale, and across the mitral valve to the ventricular aspect of the atrioventricular groove. A loop was formed to allow positioning of the catheter tip under the anterior mitral leaflet. The ablating catheter tip was aimed at the spot where the accessory pathway was localized by coronary sinus catheter mapping. CS indicates coronary sinus catheter; His, His-bundle catheter; RVA, right ventricular apex catheter; and AC, ablating catheter.
The editor of Images in Cardiovascular Medicine is Hugh A. McAllister, Jr, MD, Chief, Department of Pathology, St Luke’s Episcopal Hospital and Texas Heart Institute, and Clinical Professor of Pathology, University of Texas Medical School and Baylor College of Medicine.
Circulation encourages readers to submit cardiovascular images to Dr Hugh McAllister, Jr, St Luke’s Episcopal Hospital and Texas Heart Institute, 6720 Bertner, MC1-267, Houston, TX 77030.
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