We enrolled patients with acute pancreatitis who were at high risk for complications on the basis of an Acute Physiology and Chronic Health Evaluation II score of @ or higher ( on a scale of @ to @ , with higher scores indicating more severe disease ) , an Imrie or modified Glasgow score of @ or higher ( on a scale of @ to @ , with higher scores indicating more severe disease ) , or a serum C-reactive protein level of more than @ mg per liter .