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Figure 7 Schematic representation of atrial tachycardias mapped in the left atrium depicting macro–re-entrant circuits, a focal tachycardia and passive activation of the left atrium during a right atrial tachycardia. Color codes and projections are the same as Figure 5. MV = mitral valve; PA = posteroanterior; RAO = right anterior oblique; RL = right lateral; RSPV = the right superior pulmonary vein.