Early phase of acute pancreatitis: Assessment and management

Table 2 Bedside index of severity in acute pancreatitis score and observed mortality by bedside index of severity in acute pancreatitis score score

BUN > 8.9 mmol/L
Impaired mental status (Glasgow coma scale < 15)
SIRS, defined by the presence of two or more
Temperature	< 36 °C or > 38 °C (< 96.8 °F or > 100.4 °F)
Heart rate	> 90 per minute
Respiratory rate	> 20 per minute or PaCO2 < 32 mmHg
White blood cell count	< 4000/mL or > 12000/mL or > 10% immature neutrophils
Age > 60 yr
Pleural effusion
BISAP score	Mortality (%)
0	0.1-0.2
1	0.5-0.7
2	1.9-2.1
3	5.3-8.3
4	12.7-19.3
5	22.5-26.7

BUN: Blood urea nitrogen; PaCO₂: Partial pressure of arterial carbon dioxide; SIRS: Systemic inflammatory response syndrome.