Ranson criteria explained

Ranson criteria
Purpose:assess mortality risk of acute pancreatitis

The Ranson criteria form a clinical prediction rule for predicting the prognosis and mortality risk of acute pancreatitis. They were introduced in 1974 by the English-American pancreatic expert and surgeon Dr. John Ranson (1938–1995).[1]

Usage

A score of 3 or more indicates severe acute pancreatitis. This can cause organ failure, necrosis, infected necrosis, pseudocyst, and abscess. If diagnosed with severe acute pancreatitis, people will need to be admitted to a high-dependency unit or intensive care unit.

Acute pancreatitis not secondary to gallstones

At admission:

  1. Blood glucose > 11.11 mmol/L (> 200 mg/dL)
  2. Age > 55 years
  3. Serum LDH > 350 IU/L
  4. Serum AST > 250 IU/L
  5. WBC count > 16000 cells/mm3

Within 48 hours:

  1. Serum calcium < 2.0 mmol/L (< 8.0 mg/dL)
  2. Hematocrit decreased by > 10%
  3. Oxygen (hypoxemia with PaO2 < 60 mmHg)
  4. BUN increased by 1.8 or more mmol/L (5 or more mg/dL) after IV fluid hydration
  5. Base deficit (negative base excess) > 4 mEq/L
  6. Sequestration of fluids > 6 L

Acute pancreatitis secondary to gallstones

At admission:

  1. Glucose > 220 mg/dl
  2. Age > 70 years
  3. LDH > 400 IU/L
  4. AST > 250 IU/ 100 ml
  5. WBC count > 18000 cells/mm3

Within 48 hours:

  1. Serum calcium < 8 mg/dL
  2. Hematocrit decreased by > 10%
  3. Base deficit > 4 mEq/L
  4. BUN increased by > 2 mg/dL
  5. Sequestered fluid > 6L

Alternatives

Alternatively, pancreatitis severity can be assessed by any of the following:[2]

Interpretation

Or

Notes and References

  1. Ranson JH, Rifkind KM, Roses DF, Fink SD, Eng K, Spencer FC . Prognostic signs and the role of operative management in acute pancreatitis . Surgery, Gynecology & Obstetrics . 139 . 1 . 69–81 . 1974 . 4834279 .
  2. 10.1056/NEJM199905063401807. 340. 18. 1412–1417. Baron. Todd H.. Desiree E. Morgan . Acute Necrotizing Pancreatitis. N Engl J Med. 2009-02-08. 1999-05-06. 10228193.