Revised Atlanta classification of severity of acute pancreatitis

MildModerate to severeSevere
Absence of organ failureOrgan failure for < 48 hoursPersistent organ failure for > 48 hours
Absence of local complicationsaLocal complicationsa
  • a Local complications: interstitial edematous pancreatitis, necrotizing pancreatitis, pancreatic pseudocyst, necrotic collection, and pleural effusion.

  • Based on information in references 8 and 14.