Bedside index of severity in acute pancreatitis (BISAP) score


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

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

Evidence of SIRS (systemic inflammatory response syndrome) (1 point)

Patient age >60 years old (1 point)

Imaging study reveals pleural effusion (1 point)

Total Criteria Point Count:


BISAP Score Interpretation

0 to 2 Points: Lower mortality (<2 percent)
3 to 5 Points: Higher mortality (>15 percent)

  • SIRS is present when two or more of the following are found:   1) Temperature <36°C or >38°C   2) Respirations >20/min or PaCO2 <32 mmHg   3) Heart rate >90/min   4) WBC <4,000/mm(3) or WBC >12,000/mm(3) or more than 10% bands found on blood smear.

  1. Wu BU, Johannes RS, Sun X, et al. The early prediction of mortality in acute pancreatitis: a large population-based study. Gut. 2008 Dec;57(12):1698-703. PubMed ID: 18519429 PubMed Logo



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