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Figure 4 Right (30°) and left (45°) oblique radiographic view show the mapping catheter (Map) at the successful ablation site in the AS (A,B), a multipolar catheter inside the CS, a multipolar catheter at the HBE, a catheter in the RA, and a catheter in the RV. Aortic root angiography in right (30°) and left (45°) oblique radiographic view (C,D) shows a mapping catheter in the non-coronary aortic sinus supero-posterior to sites with His bundle potential recording at distal one to four electrodes. L = left aortic sinus; N = non-coronary aortic sinus; R = right aortic sinus; other abbreviations as in Figure 1.
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