POSSUM for Morbidity/Mortality After Surgery

Physiological and Operative Severity Score for the enUmeration of Mortality and morbidity (POSSUM) predicts postoperative mortality and morbidity.

Age *

years

Patient age.

Cardiac signs * Cardiac status.

Respiratory signs * Respiratory status.

Systolic BP *

mmHg

Preoperative systolic blood pressure.

Pulse rate *

bpm

Preoperative pulse rate.

Glasgow Coma Scale *

points

Preoperative GCS.

Hemoglobin *

g/dL

Preoperative hemoglobin.

White cell count *

10^9/L

Preoperative WBC.

Urea *

mmol/L

Preoperative urea.

Sodium *

mmol/L

Preoperative sodium.

Potassium *

mmol/L

Preoperative potassium.

ECG * ECG findings.

Operative severity * Severity of operation.

Number of procedures * Number of procedures performed.

Total blood loss * Estimated blood loss.

Peritoneal soiling * Degree of peritoneal contamination.

Malignancy status * Extent of malignancy.

Mode of surgery * Timing of surgery.

Enter values and click Calculate to see results

This calculator is a clinical decision support tool and does not replace professional judgment.
Consider individual patient factors when interpreting results.

POSSUM: a scoring system for surgical audit. British Journal of Surgery (1991). Link
V-POSSUM and P-POSSUM for vascular surgery outcomes. Various validation studies (2004). Link