Table 1.
Variables used to calculate the POSSUM and SRS risk scores.
| POSSUM Score variables |
Surgical risk score |
|||
|---|---|---|---|---|
| Physiological score |
Operative severity score | *ASA Grade | BUPA | NCEPOD |
| Age | Type of Operation | 1 | Minor 1 | Elective 1 |
| Cardiac Status | Number of Procedures | 2 | Intermediate 2 | Scheduled 2 |
| Respiratory Status | Operative Blood Loss | 3 | Major minus 3 | Urgent 3 |
| ECG Status | Peritoneal Soiling | 4 | Major Plus 4 | Emergency 4 |
| Systolic Blood Pressure | Malignancy Status | 5 | Complex Major 5 | |
| Pulse | Timing of Operation | |||
| Haemoglobin | ||||
| *ASA – American Society of Anaesthesiologists | ||||
| BUPA – British United Provident Association | ||||
| NCEPOD - National Confidential Enquiry into Patient Outcome & Death | ||||
| White Cell Count | ||||
| Urea | ||||
| Sodium | ||||
| Potasium | ||||
| Glasgow Coma Scale | ||||