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Figure 7 Posteroanterior (PA) views of four maps from four patients: N. H. and T. W. (left) were patients with paroxysmal atrial fibrillation (AF), and J. G. and G. S. (right) were patients with chronic AF. Ablations performed during AF at various areas of the left atrium (red dots) resulted in arrhythmia termination. CS = coronary sinus; LA = left atrium; LIPV = left inferior pulmonary vein; LSPV = left superior pulmonary vein; RA = right atrium; RIPV = right inferior pulmonary vein; RSPV = right superior pulmonary vein.