Portsmouth - POSSUM
(Physiologic and Operative Severity Score for the enUmeration of Mortality and Morbidity) 
Age
Glasgow (Help)
 
Respiratory
 
Urea

 

  
Pulse (beats/min)

 

  
Cardiac signs

 
 
Hb (g/dL)

 

  
W.B.C.

 

  
ECG

 
 
Potassium (mEql/L)

 

  
Sodium (mEql/L)

 

  
Systolic Blood Pressure
 

 
 
Physiologic Score

 

 

 
Operative Severity (Help)
Multiple procedures
Total Blood Loss
Peritoneal soiling
Cancer
Mode of surgery
Operative Score

 


 
  Predicted Death Rate
R= (0.1692 * physiologic score)+(0.1550 *operative score)-9.065
Predicted Death Rate = 1 / ( 1+ e(-R) )

 

References :

Copeland GP et al. POSSUM : a scoring system for surgical audit. Br J Surg. 1991;78:356-360.
Prytherch DR et al. POSSUM and Portsmouth POSSUM for predicting mortality. Br J Surg. 1998;85:1217-20