The rev=sed Atlanta criteria 2012 altered the classification, severity assessment and management of acute pancreatitis

BACKGROUND： The Atlanta criteria for acute pancreatitis （AP） has been revised recently. This study was to evaluate its practical value in classification of AP, the severity assessment and management. METHODS： The clinical features, severity classification, out- come and risk factors for mortality of 3212 AP patients who had been admitted in Ruijin Hospital from 2004 to 2011 were analyzed based on the revised Atlanta criteria （RAC） and the original Atlanta criteria （OAC）.