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Figure 4 Correlation between defibrillation thresholds (in J) for first (open symbols) and second (filled symbols) internal cardioversion and pain scores (measured by means of a scale ranging from 0 = not felt to 10 = intolerable) at successful internal cardioversion of chronic and recurrent AF with respect to defibrillation vectors. (Top) Right atrium-coronary sinus (triangles). (Bottom) Right atrium-pulmonary artery (circles).
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