Injury Severity Score (ISS)
Overall trauma severity from Abbreviated Injury Scale scores.
Inputs
CompleteHead or neck: highest AIS
Face: highest AIS
Chest: highest AIS
Abdomen or pelvic contents: highest AIS
Extremities or pelvic girdle: highest AIS
External: highest AIS
Worked calculation
Your values are highlighted.
- ISS
When to use
- After injuries are fully characterized.
Pearls and pitfalls
- Above 15 defines major trauma in most registries.
Why use
The registry standard.
Sum of squares of the highest AIS in the three most severely injured body regions; any AIS 6 gives ISS 75