Table 2.
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.