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ERP frequency adaptations in Atrium and Pulmonary vein. The ERP frequency adaptations in the auricles and pulmonary veins were significantly different between the 2 groups. * P<0.05. LAA – left auricle; RAA – right auricle; LSPV – left superior pulmonary vein; LIPV – left inferior pulmonary vein; RSPV – right superior pulmonary vein; RIPV – right inferior pulmonary vein; ERP – effective refractory period.
