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Calculator: Bedside Index of Severity in Acute Pancreatitis (BISAP) score in adults

Calculator: Bedside Index of Severity in Acute Pancreatitis (BISAP) score in adults


BUN >25 mg/dL (8.9 mmol/L) (1 point)

Abnormal mental status with a Glasgow coma score <15 (1 point)

Evidence of SIRS (1 point)

Patient age >60 years old (1 point)

Imaging study reveals pleural effusion (1 point)

Important: Inputs must be complete to perform calculation.

Total criteria point count:


BISAP score interpretation

0 to 2 points: Lower mortality (<2%)
3 to 5 points: Higher mortality (>15%)

  • SIRS is present when two or more of the following are found: 1) Temperature <36°C [96.8°F] or >38°C [100.4°F]; 2) respirations >20/min or PaCO2 <32 mmHg; 3) heart rate >90/min; 4) WBC <4000/mm3 or WBC >12,000/mm3 or more than 10% bands found on blood smear.
  • Please see appropriate UpToDate topic reviews for further information.
  • BUN: blood urea nitrogen; SIRS: systemic inflammatory response syndrome; PaCO2: partial pressure of carbon dioxide; WBC: white blood cell count.

Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

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Topic 15650 Version 9.0