Ranson Criteria

At Admission:

Age > 55 years WBC > 16,000/mm³ Glucose > 11.1 mmol/L AST > 250 U/L LDH > 350 U/L

At 48 Hours:

Hct drop > 10% BUN rise > 1.8 mmol/L Calcium < 2.0 mmol/L PaO2 < 60 mmHg Base deficit > 4 mEq/L Fluid sequestration > 6L