Table 1 Grades of severity of acute pancreatitis

Mild acute pancreatitis

 ▸ No organ failure

 ▸ No local or systemic complications

Moderately severe acute pancreatitis

 ▸ Organ failure that resolves within 48 h (transient organ failure) and/or

 ▸ Local or systemic complications without persistent organ failure

Severe acute pancreatitis

 ▸ Persistent organ failure (>48 h)

 – Single organ failure

 – Multiple organ failure