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Ranson Score for Acute Pancreatitis Calculator

  • Age years
  • White blood cell count cells per mm3
  • Blood glucose mg per dL
  • Aspartate transaminase AST IU per L
  • Lactate dehydrogenase LDH IU per L
  • Hematocrit on admission percentage
  • Hematocrit at 48 hours percentage
  • BUN on admission mg per dL
  • BUN at 48 hours mg per dL
  • Serum calcium at 48 hours mg per dL
  • Arterial PaO2 at 48 hours mmHg
  • Base deficit at 48 hours mEq per L
  • Estimated fluid sequestration at 48 hours liters
  • Ranson Score for Acute Pancreatitis Explanation and Clinical Context
    The Ranson score is a prognostic scoring system developed to estimate severity and mortality risk in acute pancreatitis. It uses five clinical and laboratory criteria at admission and six criteria assessed within 48 hours. One point is assigned for each criterion met. A total score of three or greater indicates a high probability of severe disease. The score is most commonly applied to non gallstone pancreatitis in its classic form. Clinicians use the score to support risk stratification and early identification of patients who may require intensive monitoring and aggressive resuscitation including fluid management and organ support when indicated.

    Reference
    StatPearls. Ranson Criteria. National Library of Medicine. 2022.
    MDCalc. Ranson Criteria for Pancreatitis Mortality. Accessed 2025.
    Radiopaedia. Ranson Criteria. 2024.
    AAFP. Acute Pancreatitis Diagnosis Prognosis and Treatment. 2007.

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