Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Use findings at the time of surgery. Procedure examples are severity guidance; for an unlisted procedure choose the closest severity. Original POSSUM was developed for inpatient general surgical audit, is not the Portsmouth modification, and is not trauma-specific.
Result
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Formula inputs
Age
Cardiac signs
Respiratory signs
Systolic blood pressure
Pulse
Glasgow Coma Scale
Hemoglobin
White blood cell count
Serum urea
Serum sodium
Serum potassium
Electrocardiogram
Operative severity
Number of procedures
Total blood loss
Peritoneal soiling
Presence of malignancy
Mode of surgery
Primary source
Copeland GP et al. POSSUM: a scoring system for surgical audit. Br J Surg. DOI: 10.1002/bjs.1800780327. PMID: 2021856 (1991)