← Back to All Calculators
Gastroenterology
BISAP Score — Acute Pancreatitis Mortality
Bedside Index for Severity in Acute Pancreatitis
BISAP Criteria (each = 1 point)
B
BUN >25 mg/dL
Blood urea nitrogen elevation at admission
I
Impaired Mental Status
Disorientation or altered consciousness
S
SIRS Present
Systemic Inflammatory Response Syndrome (≥2 criteria — see below)
A
Age >60 Years
Patient age at time of presentation
P
Pleural Effusion
Pleural effusion present on imaging
▶
SIRS Sub-Criteria — expand to assess
Show criteria
SIRS is present when ≥2 of the following 4 criteria are met:
SIRS criteria met: 0/4
BISAP Score
—
In-Hospital Mortality
—
SIRS Status
—
ICU Recommendation
—
Note: BISAP has similar prognostic accuracy to Ranson's Criteria but is simpler to use — all 5 criteria are available at the time of admission, unlike Ranson's which requires 48-hour data.
Show Reference Table
| BISAP Score | Mortality | Recommendation |
|---|---|---|
| 0 | 0% | Monitor; floor admission |
| 1 | 0.2% | Monitor; floor admission |
| 2 | 1.7% | Floor; close monitoring |
| 3 | 7.7% | Consider ICU |
| 4 | 22% | ICU admission |
| 5 | 27% | ICU; surgical consult |
