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Figure 2 Schematic representation of the location of atrial tachycardias in this cohort. Each dot represents a focal tachycardia, and localized re-entry is represented by arrows (blue for those without and black for those with a history of atrial fibrillation). CS = coronary sinus; IVC = inferior vena cava; LAA = left atrial appendage; MV = mitral valve; RAA = right atrial appendage; SVC = superior vena cava; TV = tricuspid valve.