Introduction

The purpose of these pages is to provide surgeons with the ability to calculate a O-POSSUM score for their surgical patients having oesophagogastric surgery online to enable them to provide further information on risk in terms of morbidity and mortality. There is also a wealth of general information on risk prediction in surgery - this area of the site is constantly being updated and it is worth checking back on a regular basis.

 

Calculate an O-POSSUM Score

Choose a value in each category that matches your patient from the drop down lists in both the physiological and operative parameters tables below. You must enter the patients actual age as well as selecting the age range otherwise an error will occur. Default values (the lowest score) are shown for each category. Simply submitting the form as it is without changing the values (i.e. a young fit patient having a minor operation) still gives a % risk for mortality.

 

Physiological Parameters
Age Range * BOTH FIELDS MUST BE COMPLETED
Actual Age * BOTH FIELDS MUST BE COMPLETED
Cardiac
Respiratory
ECG
Systolic BP
Pulse Rate
Haemoglobin
WBC
Urea
Sodium
Potassium
GCS

 

If calculating risk in a preoperative patient you will need to estimate the parameters below. You can return and modify the parameters post-operatively if required.

 

Operative Parameters
Operation Type
Malignancy Status
CEPOD